GE Multilin’s Quality Management System is registered to ISO9001:2008 QMI # 005094 GE Digital Energy GE Digital Energy 650 Markland Street Markham, Ontario Canada L6C 0M1 TELEPHONE: Worldwide +1 905 927 7070 Europe/Middle East Africa +34 94 485 88 54 North America toll-free 1 800 547 8629 FAX: +1 905 927 5098 E-MAIL: Worldwide [email protected]Europe [email protected]HOME PAGE: Internet: http://www.gedigitalenergy.com/multilin *1601-9208-A2* Multilin DGCM Field RTU Instruction Manual Multilin DGCM Revision: 3.0x Manual P/N: 1601-9208-A2 GE publication code: GEK-119505A
Transcript
GE Multilin’s Quality Management System is
registered to ISO9001:2008
QMI # 005094
GEDigital Energy
GE Digital Energy650 Markland StreetMarkham, OntarioCanada L6C 0M1TELEPHONE: Worldwide +1 905 927 7070
Europe/Middle East Africa +34 94 485 88 54North America toll-free 1 800 547 8629
GENERAL SAFETY PRECAUTIONS• Thoroughly and carefully read this instruction sheet and the product manual before
programming, operating, or maintaining the DGCM Field RTU. Familiarize yourself with “SAFETY INFORMATION” on this page.
• The equipment covered by this publication must be installed, operated, and maintained by qualified personal who are knowledgeable in the installation, operation, and maintenance of overhead electric power distribution equipment along with the associated hazards.
• The user shall be responsible for ensuring the integrity of any Protective conductor connections before carrying out other actions.
• It is the responsibility of the user to check the equipment ratings and operating Instructions / installation Instructions prior to commissioning, service.
• Prior to servicing / commissioning ensure the Protective earth (PE) conductor is connected to Earth Ground prior to conducting any work
• Use a lift system with side rails/bucket to reduce a fall hazard as opposed to other means when installing or servicing.
• Do not disconnect power connectors on the DGCM when the system is on LIVE.
• The antenna provided must not be replaced with a different type. Attaching a different antenna will void the FCC and IC approval and the FCC /IC ID can no longer be considered.
• Do not remove CT terminal blocks or disconnect CT input wires when the CT phases are live. The CT I/P terminals must be shorted externally or de-energized prior to any servicing.
• Installers must follow regional requirements and or company policies regarding SAFE WORK PRACTICES. The use of proper and adequate PPE is mandatory. When mounting this unit on a pole or at heights greater than 6 ft adequate lift equipment must be used to decrease the fall hazard possibility.
FCC/Industry Canada
This device complies with Part 15 of the FCC and Industry Canada Rules. Operation is subject to the following two conditions (1) This device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation.
L’appareil conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisé aux deux conditions suivantes:
1. L'appareil ne doit pas produire de brouillage
• L'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement
Safety Words and DefinitionsThe following symbols used in this document indicate the following conditions:
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Note Indicates significant issues and practices that are not related to personal injury.
NOTE
Indicates general information and practices, including operational information and practices, that are not related to personal injury.
MULTILIN DGCM – INSTRUCTION MANUAL I
Table of Contents
1.INTRODUCTION Overview ................................................................................................................................1Description of the DGCM ...............................................................................................1Applications ..........................................................................................................................4DGCM Order Codes ...........................................................................................................9Specifications.......................................................................................................................10
Protection Alarm Elements ..................................................................................................10Monitoring....................................................................................................................................12Metering........................................................................................................................................12Inputs and Outputs..................................................................................................................13Power supply ..............................................................................................................................13Communications ......................................................................................................................13Testing and Certification.......................................................................................................14Environmental............................................................................................................................15
2.INSTALLATION Mechanical installation ...................................................................................................17Electrical installation ........................................................................................................21DGCM Field RTU Installation Guide............................................................................28
Accessing the DGCM Unit.....................................................................................................28Power Supply and Voltage Inputs Wiring .....................................................................29Rogowski Inputs........................................................................................................................30
3.INTERFACES Software Setup....................................................................................................................34EnerVista DA Setup Software..............................................................................................34
Hardware and Software Requirements .......................................................................34Installing the EnerVista DGCM Setup Software ........................................................34
Connecting EnerVista DGCM Setup to the Device ....................................................37Configuring Serial Communications ..............................................................................37Connecting to the Relay Using Ethernet Port ............................................................38Using the Quick Connect Feature ...................................................................................39Connecting to the DGCM ...................................................................................................40
Working with Settings and Settings Files......................................................................41Engaging a Device..................................................................................................................41File Support................................................................................................................................41Using Settings Files ................................................................................................................41Downloading and Saving Settings Files .......................................................................42Adding Settings Files to the Environment ...................................................................42Creating a New Settings File..............................................................................................43Upgrading Settings Files to a New Revision...............................................................44Printing Settings and Actual Values...............................................................................45Printing Actual Values from a Connected Device....................................................45Loading Settings from a File ..............................................................................................46
Upgrading DGCM firmware .................................................................................................46Loading new DGC firmware...............................................................................................46
Advanced EnerVista DGCM Setup features .................................................................47Event records............................................................................................................................47Data logger................................................................................................................................48
S2 System setup.................................................................................................................84Current setup .............................................................................................................................84
Current source..........................................................................................................................85Bus setup .....................................................................................................................................87Voltage setup.............................................................................................................................87
S3 Configuration ................................................................................................................90Setpoint Group ..........................................................................................................................90
Current alarms .........................................................................................................................90Voltage alarms.........................................................................................................................111
S4 Controls............................................................................................................................120Change setpoint group .........................................................................................................120Virtual input commands .......................................................................................................122
S5 Inputs and Outputs.....................................................................................................123Contact inputs ...........................................................................................................................123Contact Outputs .......................................................................................................................124
8.APPLICATIONS System Configuration Examples.................................................................................141Example 1 ....................................................................................................................................141Example 2 ....................................................................................................................................143
9.APPENDIX Change notes.......................................................................................................................147Revision history .........................................................................................................................147
IV MULTILIN DGCM – INSTRUCTION MANUAL
MULTILIN DGCM – INSTRUCTION MANUAL 1
Multilin DGCM Field RTU
Chapter 1: Introduction
Introduction
Overview
The DGCM is a microprocessor-based unit that belongs to the Distribution Grid Controller family, and it is designed as a field RTU. This device is intended to control and monitor up to 6 feeders using different types of current and voltage sensors including traditional CTs/VTs, Rogowski coils, and LEA.
Description of the DGCM
The GE Multilin DGCM is a versatile Field RTU that can be applied to monitor and control a wide range of pole-top, padmount, and underground distribution assets. This compact solution is designed for easy installation on new equipment and retrofit on installed assets making distribution modernization a cost-effective endeavor.The GE Multilin DGCM supports most wired and wireless communication architectures along with multiple simultaneous industry standard communication protocols making integration into SCADA and DMS systems a seamless and straightforward process.
2 MULTILIN DGCM – INSTRUCTION MANUAL
DESCRIPTION OF THE DGCM CHAPTER 1: INTRODUCTION
Figure 1: Application - meter in a typical distribution network
The DGCM Field RTU supports:
• Real-time load monitoring and profiling of up to 6 Feeders (18 individual phases)
• Overcurrent detection per phase (50, 51) for each feeder identifying faulted circuits & loads approaching overload levels
• Supports Rogowski coil current sensors for quick retrofit installation and in tight spaces
• Supports voltage sensors
MAIN FUNCTIONS OF THE DGCM FIELD RTU
Overcurrent DetectionThe Multilin DGCM has phase instantaneous and phase time overcurrent elements. The overcurrent protection generates alarms when the current exceeds the selected current level. The Multilin DGCM has one instantaneous overcurrent detection function Phase IOC. It consists of three separate instantaneous overcurrent elements; one per phase, with identical settings.Overvoltage DetectionThe phase OV protection protects voltage sensitive feeder loads and circuits against sustained overvoltage conditions. The phase OV protection generates alarms when the voltage exceeds the selected voltage level for the specified time delay.Undervoltage DetectionThe phase UV protection protects voltage sensitive feeder loads and circuits against sustained undervoltage conditions. The phase UV protection generates alarms when the voltage drops below the selected voltage level for the specified time delay.
SUBSTATION 2
UNDERGROUND CABLES
UNDERGROUND CABLES
MODERNIZING THE GRID
SWITCHGEAR / RMU
POLE-TOP EQUIPMENT
FROM SUBSTATION 1
TO SUBSTATION 3
TRANSFORMER
RESIDENTIAL/ COMMERCIAL CONSUMERLV DISTRIBUTION
SYSTEM
MONITORING & CONTROL
TR
ANSFORMER MONITORING
INDUSTRIAL CONSUMER
POLE-TOP EQUIPMENT
PAD-MOUNT SWITCHGEAR /RM
U
MONITORING & CONTROL
LV DISTRIBUTION SYSTEM
MONITORING AND CONTROL
POLE-TOP EQUIPMENT
M OL
CHAPTER 1: INTRODUCTION DESCRIPTION OF THE DGCM
MULTILIN DGCM – INSTRUCTION MANUAL 3
Phase Voltage LossThe phase loss protection feature can be used to generate an alarm when the voltage drops below a specified voltage setting for a specified time delay. It is very useful in the case of voltage sensitive loads, such as induction motors, where a drop in voltage will result in an increase in the drawn current, which may cause dangerous overheating in the motor.Virtual Inputs and OutputsThe Multilin DGCM provides 32 virtual inputs and 32 virtual outputs that provide users with the ability to send commands to the device. The Multilin DGCM can accept commands from SCADA, or front USB port to issue commands such as close or open.Command SettingThe Multilin DGCM has the ability to force commands from the menu structure. This can also be achieved via the EnerVista™ software that runs on a PC.FlexLogic™FlexLogic in the Multilin DGCM provides the ability to create customized control schemes. This minimizes the need and costs associated with auxiliary components and wiring. Schemes can be configured with FlexLogic specifying what actions need be taken based on the status of fault detections or control elements, as well as inputs driven by connected sensors and equipment.Metering and MonitoringThe Multilin DGCM provides high accuracy metering and recording of all AC signals, measuring the following key parameters:
• Phase-Ground Voltages (kV)
• Phase to Phase Voltages (kV)
• Positive, Negative, Zero Sequence Voltage
• Phase A, B, and C Currents (A)
• Positive, Negative, Zero Sequence Current
• Ground Current (A)
• 3-Phase Active Power (KW)
• 3-Phase Reactive Power (KVar)
• 3-Phase Apparent Power (KVA)
• 3-Phase Average Power (KW)
• Power Factor (Lag or Lead)
• Pos. & Neg. (Import & Export) Real Energy (kWh)
• Pos. & Neg. (Import & Export) Reactive Energy (kVarh)
• THD
Event RecorderTo significantly reduce time and enable more effective distribution, post fault analysis and troubleshooting, the Multilin DGCM provides an integrated event recorder and detailed diagnostic features. The sequence of events recorder offers the following features:
• Up to 1024 consecutive events stored
• Enable or disable, operate and dropout events by set points
• Phase voltage/current and power metering shot is also included and stored at each event
Data Management & DiagnosticsThe Multilin DGCM provides advanced disturbance diagnostic features that significantly reduce the time and costs associated with troubleshooting power system events and reconstruction. Recording functions include enhanced diagnostics with a 200 channel RMS recorder data logger.
4 MULTILIN DGCM – INSTRUCTION MANUAL
APPLICATIONS CHAPTER 1: INTRODUCTION
Applications
This section provides several usage examples of the DGCM:
• End of Line Monitoring
• RMU and Pad Mounted Switchgear
• Pole Top Applications
• Consumer Substation and LV Systems
• Pole Top and Pad Mounted Transformers
• Cable in Vaults and Cable Joint Boxes
End of Line Monitoring ApplicationUtility and industrial end of line monitoring for Volt/VAr control schemes play an important role in voltage optimization by ensuring the end customer is being provided with the proper voltage level.The Multilin DGCM can be used in applications where only voltage and/or current monitoring is required by high-end SCADA or DMS systems.
Figure 2: DGCM and End of Line Application
This application supports the following functions:
• Measures end-of-line voltage and current
• Monitors energy usage and logs this data
• Overcurrent detection and alarm
• Private radio and cellular network support for communications
RMU/Pad Mounted Switchgear ApplicationEnhancing Ring Main Units (RMUs) and pad mounted switchgear with detection functionality has its own challenges regarding the mounting of conventional MV transformers. The Multilin DGCM enables the power utility to overcome these challenges by offering Rogowski coil and Low Energy Analog (LEA) compatibility for current and voltage inputs.
DGCM
Voltage Inputs
Current Inputs
CHAPTER 1: INTRODUCTION APPLICATIONS
MULTILIN DGCM – INSTRUCTION MANUAL 5
Figure 3: DGCM and RMU/Pad Mounted Switchgear
For this application the DGCM provides the following support:
• Rogowski coils and traditional CTs
• Advanced Flexlogic engine to enable automated switching schemes
• Real-time load monitoring and profiling for up to 6 feeders (18 individual phases)
• Expandable digital inputs and outputs
• Overcurrent detection per phase (50, 51) for each feeder
Pole Top ApplicationsThe Multilin DGCM can be used for a wide range of pole top applications, such as remote controls for reclosers, switches, sectionalizers, interchange tie closures, tap changers, and capacitor bank controllers. The Multilin DGCM’s hardware and communication flexibility can be applied to a wide variety of field applications where monitoring and/or remote control is required.
Figure 4: DGCM and Pole Top Application
In this application the DGCM provides support for:
• Direct voltage measurements up to 400V or LEA voltage
M M M M M
DGCM
RMU/Pad Mounted Switchgear
Up to 64 DI& 32 DO
1 to 6 Feeders
Up to 6 Current Inputs
Up to 6Voltage
Inputs
SWITCHING DEVICE
LINE LOAD
ABC
ABC
DGCM
6 MULTILIN DGCM – INSTRUCTION MANUAL
APPLICATIONS CHAPTER 1: INTRODUCTION
• Creation of customized control schemes via Flexlogic engine
• Remote configuration and firmware update
• Monitors energy usage and logs the data
• Overcurrent detection per phase (50, 51) for each feeder
Consumer and Substation LV Systems ApplicationMost consumer substations and indoor/outdoor LV systems lack asset monitoring and control. The Multilin DGCM can be used to effectively monitor power quality, as well as control, when necessary. Rogowski coil support provides current sensing in hard-to-find spaces and allows for modifications without an actual outage. The provision of overcurrent detection provides a vital warning signal well in advance of an actual failure.
Figure 5: DGCM and Consumer and Substation LV Systems
In this application the DGCM provides the following functionality:
• Monitoring of real-time load and energy, and profiling of up to 6 feeders (18 individual phases).
• Capable of using Rogowski coil current sensors or traditional CTs for easy retrofit installation
• Direct voltage measurements of up to 400V or LEA voltage
• Capable of compensating for amplitude and phase shifts associated with different sensor types
• Identification of faulted circuits and Overcurrent detection per phase (50, 51) for each feeder
• Ability to ensure faster response time to SCADA and DMS systems via unsolicited messaging
• Identification of locations where theft is detected via individual feeder energy monitoring
Pole Top and Pad Mounted Transformers ApplicationThe Multilin DGCM enables the monitoring of transformer conditions, identifying transformers likely to fail. This keeps the power utility updated on changing load demands for pole top and pad mounted transformers, and enables the power utility to plan for current peak loads and future demand.
DGCM
LV Substation
Up to Voltage Inputs
1 to 6 FeedersUp to 18 Current Inputs
CHAPTER 1: INTRODUCTION APPLICATIONS
MULTILIN DGCM – INSTRUCTION MANUAL 7
Figure 6: DGCM and Pole Top Mounted Transformer
The following functions are supported:
• Capable of using Rogowski coil current sensors or traditional CTs for easy retrofit installation
• Monitors energy usage and logs the data
• Monitors real-time transformer load.
• Compatible with existing infrastructure via multiple communication (cellular, radio) and protocol options
• Capable of remote configuration and firmware updates
Application for Cable in Vaults and Cable Joint BoxesUnderground networks require the quick identification of faults. Deployment of the Multilin DGCM at strategic locations along cable paths enables faster fault detection as well as early warning signals in case of overload.
Figure 7: DGCM and Cable in Vaults and Cable Joint Boxes
In this application the following functions are supported:
• Capable of detecting faults for underground cable networks
• Easy retrofit installation for locations where space is limited
DGCM
Voltage Inputs
Current Inputs
DGCM
1 to 6 FeedersUp to 18 Current Inputs
Up to 6 sets of 3-Phase cables
8 MULTILIN DGCM – INSTRUCTION MANUAL
APPLICATIONS CHAPTER 1: INTRODUCTION
• Early warning and fault detection per phase (50, 51) for each feeder
• Compatibility with existing infrastructure i.e., DMS and SCADA via multiple communication (cellular, radio) and protocol options
CHAPTER 1: INTRODUCTION DGCM ORDER CODES
MULTILIN DGCM – INSTRUCTION MANUAL 9
DGCM Order Codes
Figure 8: Order Codes
Slots A B C D E F DGCM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Description * - * * * - S S - * - * - X - X - X - X * 1 *
Field RTUCPU type A I I I I I I I I I I I I Base unit includes: 3 x Voltage inputs (60 to 440 VAC) B I I I I I I I I I I I I Base unit includes: 3 x Voltage inputs (0 to 12 VAC)Language E I I I I I I I I I I I EnglishPower Supply H I I I I I I I I I I High Volt AC Power Supply (85 V to 265 VAC/DC)
L I I I I I I I I I I Low Volt DC Power Supply (24 V to 60 VDC)Communications S I I I I I I I I I Standard Communications (Serial communications)Options S I I I I I I I I StandardModules C C I I I I I I 9 x CT inputs 5 Amp/1 Amp secondary (maximum 2) F F I I I I I I 9 x Rogowski Coil inputs (maximum 2) P P I I I I I I 16 x Digital Inputs, 8 x Digital Outputs (64 DI & 32 DO
max., 100-240V AC/DC) (maximum 4) Q Q I I I I I I 16 x Digital Inputs, 8 x Digital Outputs (64 DI & 32 DO
max., 20�60V DC) (maximum 4) Controllers X X X X X X I I
1 I Controller only (no display) 2 I Controller in enclosure (no display)External Communication
X No external communications
1 Long range High Speed Serial communicationMDS TransNet (EL805-MD9X1AFCD1WN) - Available with controller in enclosure
2 Long range Ethernet & Serial communicationMDS iNET-II (iNETII-MD9A1AVFCD1NN0) - Available with controller in enclosure
Rogowski Coil SensorsROGS - A A 3 Rogowski Coil Sensor, 3 meter termination length is
always supplied when the F option for Current input is ordered.
10 MULTILIN DGCM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
Specifications
Protection Alarm ElementsPHASE HIGH INSTANTANEOUS OVERCURRENTCurrent:.................................................................... FundamentalPickup Level: .........................................................0.05 - 2.5 x CT in steps of 0.01 x CT (for Traditional CT);
0.05 - 1.5 x CT in steps of 0.01 x CT (for Rogowski Coil)Dropout Level: ......................................................95 to 98% of Pickup or ±0.02 x CT (whichever is greater)Time Delay:............................................................0.00 to 600.00 s in steps of 0.01Operate Time: ......................................................<50 ms @ (I > 1.5 x Pickup level)Level Accuracy:....................................................±1% at rated current; ±3% for current higher than 0.1 x CTTiming Accuracy: ................................................±3% of alarm time or ±20 ms (whichever is greater)
PHASE LOW INSTANTANEOUS OVERCURRENTCurrent:.................................................................... FundamentalPickup Level: .........................................................0.05 - 2.50 x CT in steps of 0.01 x CTDropout Level: ......................................................95 to 98% of Pickup or ±0.02 x CT (whichever is greater)Time Delay:............................................................0.00 to 600.00 s in steps of 0.01Operate Time: ......................................................<50 ms @ (I > 1.5 x Pickup level)Level Accuracy:....................................................±1% at rated current; ±3% for current higher than 0.1x CTTiming Accuracy: ................................................±3% of alarm time or ±20 ms (whichever is greater)
NEUTRAL INSTANTANEOUS OVERCURRENTNeutral Current:................................................... FundamentalPickup Level: .........................................................0.05 to 2.5 x CT in steps of 0.01 x CT (for Traditional CT);
0.05 to 1.5 X CT in steps of 0.01 x CT (for Rogowski Coil)Dropout Level: ......................................................95 to 98% of Pickup or ±0.02 x CT (whichever is greater)Time Delay:............................................................0.00 to 600.00 s in steps of 0.01Operate Time: ......................................................<50 ms @ (I > 1.5 x Pickup level, no time delay)Level Accuracy:....................................................±1% at rated current; ±3% for current higher than 0.1 x CTTiming Accuracy: ................................................±3% of trip time or ±25 cycle whichever is greater
(intentional delay)
PHASE TIMED OVERCURRENT (51P)Current:.................................................................... Ia, Ib, IcPickup Level: .........................................................0.05 to 2.5 x CT in steps of 0.01 x CT (for Traditional CT);
0.05 to 1.5 X CT in steps of 0.01 x CT (for Rogowski Coil)Dropout Level: ......................................................95 to 98% of Pickup or ±0.02 x CT (whichever is greater)Curve Shape:......................................................... IEEE Extremely / Very / Moderately Inverse; IEC Curve A / B /
C and Short Inverse; IAC Extremely / Very / Inverse / Short Inverse; FlexCurve A, FlexCurve B, FlexCurve C, Definite time, User Curve
Curve Multiplier: ..................................................0.00 to 20.00 in steps of 0.01Reset Time: ............................................................ Instantaneous, LinearLevel Accuracy:....................................................±3% for current higher than 0.1x CTTiming Accuracy: ................................................±3% of trip time or ±20 ms (whichever is greater)
CHAPTER 1: INTRODUCTION SPECIFICATIONS
MULTILIN DGCM – INSTRUCTION MANUAL 11
NEUTRAL TIMED OVERCURRENTCurrent: ....................................................................FundamentalPickup Level:..........................................................0.05 to 2.5 x CT in steps of 0.01 x CT (for Traditional CT);
0.05 to 1.5 X CT in steps of 0.01 x CT (for Rogowski Coil)Dropout Level: ......................................................95 to 98% of Pickup or ±0.02 x CT (whichever is greater)Curve Shape:.........................................................IEEE Extremely / Very / Moderately Inverse; IEC Curve A / B /
C and Short Inverse IAC; Extremely / Very / Inverse / Short Inverse; FlexCurve A, FlexCurve B, FlexCurve C, Definite time, User Curve
Curve Multiplier:...................................................0.00 to 20.00 in steps of 0.01Reset Time: ............................................................Instantaneous, LinearLevel Accuracy: ....................................................±3% for current higher than 0.1x CT;Timing Accuracy: ................................................±3% of trip time or ±20 ms (whichever is greater)
PHASE OVERVOLTAGEPickup Level:..........................................................0.05 to 1.25 x VT in steps of 0.01Dropout Level: ......................................................95% to 99% of pickup (V > 0.1 x VT);
85% to 99% of pickup (V < 0.1 x VT)Time Delay: ............................................................0.0 to 600.0 s in steps of 0.1Operate Time:.......................................................time delay + up to 35 ms @ 60Hz (V > 1.1 x PKP);
time delay + up to 40 ms @ 50Hz (V > 1.1 x PKP)Time Delay Accuracy: .......................................0 to 1 cycleLevel Accuracy: ....................................................per voltage input
PHASE UNDERCURRENTCurrent: ....................................................................FundamentalPickup Level:..........................................................0.05 to 2.5 x CT in steps of 0.01 x CT (for Traditional CT);
0.05 to 1.5 x CT in steps of 0.01 x CT (for Rogowski Coil)Dropout Level: ......................................................102% to 103% of pickupTime Delay: ............................................................0.00 to 600.00 s in steps of 0.01Operate Time:.......................................................<50 ms @ (I > 1.5 x Pickup level)Level Accuracy: ....................................................±1% at rated current; ±3% for current higher than 0.1x CTTiming Accuracy: ................................................±3% of alarm time or ±20 ms (whichever is greater)
PHASE UNDERVOLTAGEMinimum Voltage:...............................................programmable from 0.00 to 1.25 x VT in steps of 0.01Pickup Level:..........................................................0.05 to 1.25 x VT in steps of 0.01Dropout Level: ......................................................101% to 104% of pickup (V > 0.1 x VT);
101% to 115% of pickup (V < 0.1 x VT)Time Delay: ............................................................0.1 to 600.0 s in steps of 0.1Operate Time:.......................................................Time Delay ± 30 ms @ 60Hz (V < 0.85 x PKP) Time Delay ± 40
ms @ 50Hz (V < 0.85 x PKP)Time Delay Accuracy: .......................................±3% of expected inverse time or 1 cycle, whichever is
greaterLevel Accuracy: ....................................................per voltage input
PHASE VOLTAGE LOSSMinimum Voltage:...............................................programmable from 0.00 to 1.25 x VT in steps of 0.01Pickup Level:..........................................................0.05 to 1.25 x VT in steps of 0.01Dropout Level: ......................................................101% to 104% of pickup (V > 0.1 x VT); 101% to 115% of
pickup (V < 0.1 x VT)Time Delay: ............................................................0.1 to 600.0 s in steps of 0.1Operate Time:.......................................................Time Delay ± 30 ms @ 60Hz (V < 0.85 x PKP)
Time Delay ± 40 ms @ 50Hz (V < 0.85 x PKP)Time Delay Accuracy: .......................................±3% of expected inverse time or 1 cycle, whichever is
greaterLevel Accuracy: ....................................................per voltage input
12 MULTILIN DGCM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
MonitoringDATA LOGGERNumber of Channels:........................................1 to 200Parameters:...........................................................Any available analog actual valueSampling Rate:.....................................................1 min, 5 min, 10 min, 15 min, 30 min, 60 min.Storage Capacity: ............................................... This value is dependent on memory, 200 channels for 14
days at 30-minute rate; 100 channels for 4.6 days at 5-minute rate
EVENT RECORDERCapacity:.................................................................1024 eventsTime-tag: ................................................................ To 1 microsecondTriggers: ..................................................................Any element pickup, dropout, or operate; digital input
change of state; digital output, change of state; self-test events
Data storage:........................................................ In non-volatile memory
MeteringFor the following, Accuracies are specified at 25° C and at nominal system frequency unless noted otherwise.
VOLTAGELow Range InputsRange: ......................................................................0 VAC to 10 VACAccuracy:................................................................Phase to Ground Voltages: ±0.5%, reading ±0.2% full scale;
Phase to Phase Voltages: ±0.5%, reading ±0.2% full scale (for measured voltages)
High Range InputsRange: ......................................................................60 VAC to 300 VACAccuracy:................................................................Phase to Ground Voltages: ±0.5%, reading ±0.2% full scale;
Phase to Phase Voltages: ±0.5%, reading ±0.2% full scale (for measured voltages)
CURRENTSRange for CT’s: ..................................................... :0.05 A to 2.5 times CT RatingRange for Rogowski coils:...............................0.05 A to 1.5 times CT RatingAccuracy:................................................................±1°, reading ±0.2% full scale
Note that 1A or 5A CT’s are software selectable.
FREQUENCYFrequency: .............................................................40 to 70HzAccuracy:................................................................±0.01Hz
POWER FACTORRange: ......................................................................0.3 Lag to 1 to 0.6 Lead
POWER (VA, VAr, W)Accuracy:................................................................±1.5%; reading ±0.2% full scale (Vphase>60V; Iphase>0.05xCT)
ENERGY (VAh, VArh, Wh)Accuracy:................................................................±1.5%; reading ±0.2% full scale (Vphase>60V; Iphase>0.05xCT)
HARMONICSHarmonics: ............................................................2nd to 15th Harmonics in % f0
THD (IN PER CENT)Range: ......................................................................0.20% to 100% f0
CHAPTER 1: INTRODUCTION SPECIFICATIONS
MULTILIN DGCM – INSTRUCTION MANUAL 13
Inputs and OutputsPHASE CURRENT INPUTS (CTS)Input Range: ..........................................................0.05 to 2.50 x CTInput Type:..............................................................1 A or 5 A (SW Selectable)Nominal Frequency: ..........................................50 or 60 HzBurden: ....................................................................<0.1 VA at rated loadAccuracy: ................................................................±1% of reading ±0.2% of full scaleCT Withstand: .......................................................1 second at 20 times rated current, continuous at 4 times
rated current
PHASE CURRENT INPUTS (ROGOWSKI COILS)Input Range: ..........................................................60 to 800 ANominal Frequency: ..........................................50 or 60 HzAccuracy: ................................................................±1% of reading
PHASE VOLTAGE INPUTS (DIRECT CONNECTION)Input Range: ..........................................................60 to 300 VNominal Frequency: ..........................................50 or 60 HzAccuracy: ................................................................±0.5% of readingVoltage withstand: .............................................600V continuous
PHASE VOLTAGE INPUTS (LEA)Input Range: ..........................................................0 to 10 VACNominal Frequency: ..........................................50 or 60 HzBurden: ....................................................................<0.25 VAAccuracy: ................................................................±0.5% throughout rangeVoltage withstand: .............................................2 x Vn continuously, 3 x Vn 10s
DIGITAL INPUTSThreshold: ...............................................................20 V to 64 VAC for low range
100 V to 240 VAC for high rangeRecognition Time:...............................................1\2 CycleDebounce Time: ..................................................10 to 100 ms, selectable in steps of 5 ms
DIGITAL OUTPUTSContact Material: ................................................Silver AlloyOperate Time:.......................................................10 msContinuos Current: .............................................6 AMake and Carry for 4s: .....................................15 A per ANSI C37.90
Power supplyHIGH RANGE POWER SUPPLYNominal: ..................................................................110 to 240 VAC or 125 to 250 VDCRange: ......................................................................85 to 265 VAC (50 and 60 Hz) or
85 to 300 VDCVoltage Withstand: ............................................300 VAC Continuous, 2 x Nominal for 1 secondPower Consumption:.........................................16 W typical and 45 W maximum
LOW RANGE POWER SUPPLYNominal: ..................................................................24 to 48 VDC Range: ......................................................................20 to 60 VDC
CommunicationsSERIALBaud Rates:............................................................Up to 115 kbpsRS485 Port:.............................................................Opto-coupledProtocol: ..................................................................Modbus RTU, DNP 3.0
USBData Transfer Rate: ...........................................115 kbpsStandard Specification: ...................................Compliant with USB 2.0
INTERNAL MODEMManufacture: ........................................................ Telit GE910 GPRS/GSM module Quad-band EGSM:..............................................850 / 900 / 1800 / 1900 MHz GSM/GPRS protocol stack: .............................Compliant with 3GPP Release 4Control via AT commands: .............................3GPP 27.005, 27.007, and Telit custom AT commands Serial port multiplexer :....................................3GPP 27.010 Sensitivity: ..............................................................=< - 107 dBm (typ.) @ 850 / 900 MHz
=< - 107 dBm (typ.) @ 1800 / 1900 MHzExtended temperature range:...................... -40°C to +85°CCompliant with: ...................................................RoHS compliantApprovals: .............................................................. Fully type approved conforming with
CE, GCF, FCC, PTCRB, IC
SMSMobile:......................................................................Point-to-point mobile originated and mobile terminatedSupported: .............................................................Concatenated SMS supportedBroadcast:.............................................................. SMS cell broadcastMode:........................................................................ Text and PDU modeSMS over: ................................................................ SMS over GPRS
GPRS DATAClass: ........................................................................GPRS class 10, and Mobile station class BCoding scheme:...................................................1 to 40Support:...................................................................PBCCH support, and
GERAN Feature Package 1 support (NACC, Extended TBF)
Testing and Certification
APPROVALS
Applicable Council Directive According to
CE compliance Low voltage directive IEC 61010-1 2010
EMC Directive IEC 61326-1 2005
ISO Manufactured under a registered quality program
ISO9001
CHAPTER 1: INTRODUCTION SPECIFICATIONS
MULTILIN DGCM – INSTRUCTION MANUAL 15
Environmental
TYPE TESTS
Test Description Test Levels Reference Standard
Electrical (Category III, 300V)
Dielectric Strength Basic & supplementary insulation: 2.0kV at least 1 min
IEC 60255-27/EN 60255-5
Impulse 5kV 1.25/50us EN 60255-5
Clearance & Creepage Category III, 300V, Table D6 IEC 60255-27
Immunity
ESD 8kV contact / 15kV air discharge IEC 61000-4-2, EN60255-22-2
Radiated RF Immunity 10V/m (80MHz to 1GHz) IEC 61000-4-3, EN60255-22-3
Fast Transient 4kV at 5kHz IEC 61000-4-4/ IEC60255-22-4
Surge 2kV IEC60255-22-5
Conducted RF Immunity 10 Vrms (150kHz to 80MHz) IEC 61000-4-6IEC60255-22-6
Power Frequency Magnetic Field Immunity
Level 5: 100A/m continuous,1000A/m 1 to 3 s
IEC 61000-4-8
Voltage Dip 0% during 1 cycle, 40% during 10/12 cycles, 70% during 25/30 cycles, 80% during 250/300 cycles
IEC 61000-4-11
Voltage Interruption 0% during 250/300 cycles IEC 61000-4-11
Emission
Radiated RF Emission Group 1 & Class B CISPR 11, IEC60255-25
Conducted RF Emission Group 1 & Class B CISPR 11, IEC60255-25
ENVIRONMENTAL SPECIFICATIONS
Ambient temperatures:
Storage/shipping: - 40oC to 90oC *
Operating: - 40oC to 65oC *
Humidity: Operating up to 95% (non condensing)
Altitude: 2000m (max)
Insulation Category: I
Overvoltage Category: III
Ingress Protection: IP44 with external enclosure
Pollution Degree: II
16 MULTILIN DGCM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
MULTILIN DGCM – INSTRUCTION MANUAL 17
Multilin DGCM Field RTU
Chapter 2: Installation
Installation
This chapter provides information about the installation of the DGCM Field RTU device. In addition, this chapter is intended only for qualified, professional and skilled technicians authorised to act in accordance with the safety standards provided for the electrical installations. The authorised individual must have appropriate training and wear suitable Personal Protection Equipment (PPE).
IMPORTANT: Installers must follow regional requirements and/or company policies regarding SAFE WORK PRACTICES. The use of proper and adequate PPE is mandatory. When mounting this unit on a pole or at heights greater than 6 ft, adequate lift equipment must be used to decrease the possibility of a fall hazard.
y
Mechanical installation
This section describes the mechanical installation of the DGCM system. Dimensions for mounting and information on module withdrawal and insertion are included.
DIMENSIONS
The dimensions of the DGCM with and without external enclosure are shown below.
18 MULTILIN DGCM – INSTRUCTION MANUAL
MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION
Figure 1: DGCM Dimensions without External Enclosure
192.2mm (7.57”)
161.7mm (6.37”)
113.28mm(4.46”)
147.32mm(5.8”)
CHAPTER 2: INSTALLATION MECHANICAL INSTALLATION
MULTILIN DGCM – INSTRUCTION MANUAL 19
Figure 2: DGCM Dimensions with Enclosure
PRODUCT IDENTIFICATION
The product identification label is located on the side panel of the DGCM. This label indicates the product model, serial number, firmware revision, and date of manufacture.
Figure 3: DGCM Label
MOUNTING ONLY THE DGCM
The standard panel mount and cutout dimensions are illustrated below.CAUTION: To avoid the potential for personal injury due to fire hazards, ensure the unit is
mounted in a safe location and/or within an appropriate enclosure.
20 MULTILIN DGCM – INSTRUCTION MANUAL
MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION
Figure 4: DGCM Standard panel mounting
Figure 5: Panel cutout dimensions
STANDARD PANEL MOUNTING
4xM4 SCREWS
PANEL CUTOUT DIMENSIONS
178mm
10
0m
m
Ø4,5mm
[0.177"]
[7"]
[3.9
3"]
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MULTILIN DGCM – INSTRUCTION MANUAL 21
Electrical installation
This section describes the electrical installation of the DGCM system. Terminal identification, and current, voltage and contact input information are included.
22 MULTILIN DGCM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
Figure 6: Typical wiring diagram
TERMINAL IDENTIFICATION
The connections for the DGCM terminal slots #1 and #2 are identified as shown in the figure below. The Terminal #1 slot can be a Rogowski, CT, or I/O module. Similarly, the Terminal #2 can be a Rogowski, CT, or I/O module.
89
17
06
.CD
R
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MULTILIN DGCM – INSTRUCTION MANUAL 23
Figure 7: Terminal Slot Labels
The figure below shows a DGCM device which has a Traditional CT module in slot #1 and I/O module in slot #2. This is a standard configuration
Figure 8: DGCM device - terminal identification
TERMINAL IDENTIFICATION SLOT #1
TERMINAL IDENTIFICATION SLOT #2
ROGOWSKI MODULE CT MODULE I/O MODULE
A
B
ROGOWSKI MODULE CT MODULE I/O MODULE
A
B
PHASE C SRC 3
PHASE C SRC 3
PHASE B SRC 3
PHASE B SRC 3
PHASE A SRC 3
PHASE A SRC 3
PHASE C SRC 2
PHASE C SRC 2
PHASE B SRC 2
PHASE B SRC 2
PHASE A SRC 2
PHASE A SRC 2
PHASE C SRC 1
PHASE C SRC 1
PHASE B SRC 1
PHASE B SRC 1
PHASE A SRC 1
PHASE A SRC 1
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16OUT8
OUT7
OUT6
OUT5
OUT4
OUT3
OUT2
OUT1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16
17
18
INP13
INP12
INP11
INP10
INP9
COMMON-2
COMMON-1
INP8
INP7
INP6
INP14
INP15
INP16
INP5
INP4
INP3
INP2
INP1
1
3
5
7
9
11
13
15
17
19
21
23
25
27
PHASE A SRC1 (BLACK)
PHASE A SRC1 (GND)
PHASE B SRC1 (BLACK)
PHASE C SRC1 (BLACK)
PHASE C SRC1 (GND)
PHASE A SRC2 (BLACK)
PHASE B SRC2 (BLACK)
PHASE B SRC2 (GND)
PHASE C SRC2 (BLACK)
PHASE A SRC3 (BLACK)
PHASE A SRC3 (GND)
PHASE B SRC3 (BLACK)
PHASE C SRC3 (BLACK)
PHASE C SRC3 (GND)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
PHASE A SRC1 (WHITE)
PHASE B SRC1 (GND)
PHASE B SRC1 (WHITE)
PHASE C SRC1 (WHITE)
PHASE A SRC2 (GND)
PHASE A SRC2 (WHITE)
PHASE B SRC2 (WHITE)
PHASE C SRC2 (GND)
PHASE C SRC2 (WHITE)
PHASE A SRC3 (WHITE)
PHASE B SRC3 (GND)
PHASE B SRC3 (WHITE)
PHASE C SRC3 (WHITE)
PHASE C SRC6
PHASE C SRC6
PHASE B SRC6
PHASE B SRC6
PHASE A SRC6
PHASE A SRC6
PHASE C SRC5
PHASE C SRC5
PHASE B SRC5
PHASE B SRC5
PHASE A SRC5
PHASE A SRC5
PHASE C SRC4
PHASE C SRC4
PHASE B SRC4
PHASE B SRC4
PHASE A SRC4
PHASE A SRC4
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16OUT16
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
OUT9
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16
17
18
INP29
INP28
INP27
INP26
INP25
COMMON-2
COMMON-1
INP24
INP23
INP22
INP30
INP31
INP32
INP21
INP20
INP19
INP18
INP17
1
3
5
7
9
11
13
15
17
19
21
23
25
27
PHASE A SRC4 (BLACK)
PHASE A SRC4 (GND)
PHASE B SRC4 (BLACK)
PHASE C SRC4 (BLACK)
PHASE C SRC4 (GND)
PHASE A SRC5 (BLACK)
PHASE B SRC5 (BLACK)
PHASE B SRC5 (GND)
PHASE C SRC5 (BLACK)
PHASE A SRC6 (BLACK)
PHASE A SRC6 (GND)
PHASE B SRC6 (BLACK)
PHASE C SRC6 (BLACK)
PHASE C SRC6 (GND)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
PHASE A SRC4 (WHITE)
PHASE B SRC4 (GND)
PHASE B SRC4 (WHITE)
PHASE C SRC4 (WHITE)
PHASE A SRC5 (GND)
PHASE A SRC5 (WHITE)
PHASE B SRC5 (WHITE)
PHASE C SRC5 (GND)
PHASE C SRC5 (WHITE)
PHASE A SRC6 (WHITE)
PHASE B SRC6 (GND)
PHASE C SRC6 (WHITE)
PHASE C SRC6 (WHITE)
#2#1
VOLTAGE INPUTS
POWER SUPPLY
L
N
L1
L2
L3
N
GND
B(-)
A(+)
24 MULTILIN DGCM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
The figure below shows a DGCM device which has Rogowski (slot #1) and Rogowski (slot #2) modules chosen.
Figure 9: DGCM device - terminal identification
WIRE RANGE
Use the following guidelines when selecting wires or lugs to connect to terminal blocks.
CT and I/O Modules
Conductor cross section solid min. 0.2 mm²
Conductor cross section solid max. 1.5 mm²
Conductor cross section stranded min. 0.2 mm²
Conductor cross section stranded max. 2.5 mm²
Conductor cross section stranded, with ferrule without plastic sleeve min. 0.25 mm²
Conductor cross section stranded, with ferrule without plastic sleeve max. 1.5 mm²
Conductor cross section stranded, with ferrule with plastic sleeve min. 0.25 mm²
Conductor cross section stranded, with ferrule with plastic sleeve max. 1.5 mm²
Conductor cross section AWG/kcmil min. 24
Conductor cross section AWG/kcmil max 16
Minimum AWG according to UL/CUL 24
Maximum AWG according to UL/CUL 14
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MULTILIN DGCM – INSTRUCTION MANUAL 25
Phase sequence and transformer polarity
For correct operation of the relay features, the user must follow the instrument transformer polarities, shown in the Typical Wiring Diagram. Note the solid square markings shown with all instrument transformer connections. When the connections adhere to this drawing, the arrow shows the direction of power flow for positive watts and the positive direction of lagging vars. The phase sequence is user programmable for either ABC or ACB rotation.
Current inputs for the CT option
The DGCM has up to 18 channels for AC current inputs, each with an isolating transformer. There are no internal ground connections on the current inputs. Current transformers with 1 to 3000 A primaries may be used.
CAUTION: Verify that the relay’s nominal input current of 1 A or 5 A matches the secondary rating of the connected CTs. Unmatched CTs may result in equipment damage or inadequate protection
CAUTION: IMPORTANT: The phase and ground current inputs will correctly measure up to 2.5 times the current input’s nominal rating. Time overcurrent curves become horizontal lines for currents above the 2.5 × CT rating. This becomes apparent if the pickup level is set above the nominal CT rating
IMPORTANT: Do not remove CT terminal blocks or disconnect CT input wires when the CT phases are live. CT I/P terminals must be shorted externally or de-energized prior to any servicing
Power supply and Voltage inputs
Conductor cross section solid min. 0.2 mm²
Conductor cross section solid max. 2.5 mm²
Conductor cross section stranded min. 0.2 mm²
Conductor cross section stranded max. 2.5 mm²
Conductor cross section stranded, with ferrule without plastic sleeve min. 0.25 mm²
Conductor cross section stranded, with ferrule without plastic sleeve max. 2.5 mm²
Conductor cross section stranded, with ferrule with plastic sleeve min. 0.25 mm²
Conductor cross section stranded, with ferrule with plastic sleeve max. 2.5 mm²
Conductor cross section AWG/kcmil min. 24
Conductor cross section AWG/kcmil max 12
2 conductors with same cross section, solid min. 0.2 mm²
2 conductors with same cross section, solid max. 1 mm²
2 conductors with same cross section, stranded min. 0.2 mm²
2 conductors with same cross section, stranded max. 1.5 mm²
2 conductors with same cross section, stranded, ferrules without plastic sleeve, min.
0.25 mm²
2 conductors with same cross section, stranded, ferrules without plastic sleeve, max.
1 mm²
2 conductors with same cross section, stranded, TWIN ferrules with plastic sleeve, min.
0.5 mm²
2 conductors with same cross section, stranded, TWIN ferrules with plastic sleeve, max.
1 mm²
Minimum AWG according to UL/CUL 30
Maximum AWG according to UL/CUL 12
Tightening torque, min 0.5 Nm
Tightening torque max 0.6 Nm
26 MULTILIN DGCM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
CAUTION: If the current input is from Rogowski coil, the phase and ground current inputs will correctly measure up to 1.5 times the current input’s nominal rating. Time overcurrent curves become horizontal lines for currents above the 1.5 × CT rating. This becomes apparent if the pickup level is set above the nominal sensor rating.
Voltage Inputs
The DGCM relay has three channels for AC voltage inputs. Two ranges are available, 0 to 300 Vac to be used with direct connection or through voltage transformers; or optional Low Energy Analog voltage inputs to be connected from voltage transducers.
Voltage transformers up to a maximum 10000:1 ratio may be used. The nominal secondary voltage must be in the 60 to 600 V range. The three phase inputs are designated as the “bus voltage”. The Bus VT connections most commonly used, wye and delta (or open delta), are shown in the Typical Wiring Diagram figure above.
Control powerCAUTION: Control power supplied to the relay must match the installed power supply range. If the
applied voltage does not match, damage to the unit may occur. All grounds MUST be connected for safe, normal operation regardless of control power supply type
The label found on the relay specifies its order code or model number. The installed power supply’s operating range will be one of the following:
• LO: 24 to 48 V DC (Range: 20 to 60 V DC)
• HI: 125 to 250 V DC/120 to 240 V AC (Range: 85 to 250 V DC/85 to 265 V AC)CAUTION: The relay should be connected directly to the ground bus, using the shortest practical
path. A tinned copper, braided, shielding and bonding cable should be used.
CAUTION: Isolate power prior to servicing.
Contact Inputs
External contacts can be connected to the relay’s digital inputs. These contacts are wet only.
CAUTION: Ensure correct polarity on contact input connections and do not connect any contact input circuits to ground or else relay hardware may be damaged.
A wet contact has one side connected to the positive terminal of an external DC power supply. The other side of this contact is connected to the required contact input terminal. In addition, the negative side of the external source must be connected to the relay’s DC negative rail.Two ranges are available:
• Low range (option Q): 20-60Vdc
• High range (option P): 100-265Vac
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MULTILIN DGCM – INSTRUCTION MANUAL 27
Figure 10: Wet contact connections
Output Relays
The DGCM is equipped with up to 16 electromechanical output relays designed for general purpose and with the possibility of being configured by the user.
WET CONTACT CONNECTION
V POWERSUPPLY
DC
WET CONTACTCONNECTION
A1
A2
A4
A3
A5
A7
A6
A9
A10
A12
A14
A13
A11
A8
A15
A17
A16
A18
DIG
ITA
LIN
PU
TS
INPUT 1
INPUT 2
INPUT 4
INPUT 3
INPUT 5
INPUT 7
INPUT 6
INPUT 9
INPUT 10
INPUT 12
INPUT 14
INPUT 13
INPUT 11
INPUT 8
INPUT 15
COMMON-1
INPUT 16
COMMON-2
28 MULTILIN DGCM – INSTRUCTION MANUAL
DGCM FIELD RTU INSTALLATION GUIDE CHAPTER 2: INSTALLATION
DGCM Field RTU Installation Guide
This section provides information about the installation of the DGCM Field RTU device. This section is intended only for qualified, professional and skilled technicians, authorised to act in accordance with the safety standards provided for electrical installations. The person must have appropriate training and wear suitable Personal Protection Equipment (PPE).
IMPORTANT: Installers must follow regional requirements and or company policies regarding SAFE WORK PRACTICES. The use of proper and adequate PPE is mandatory. When mounting this unit on a pole or at heights greater than 6 ft adequate lift equipment must be used to decrease the fall hazard possibility.
Accessing the DGCM UnitWhen a DGCM unit is shipped with the enclosure option, the top of the enclosure must be removed to access the DGCM unit.
Figure 11: DGCM mounted in Enclosure (no display)
There are four screws that must be removed before the top part of the enclosure can be separated from the bottom part.
IMPORTANT: To avoid unauthorized access the locking device must be added for in-field use.
Add Optional Padlock Device for Added Security
The option to add a padlock device to the enclosure is available. The padlock device is a padlock adaptor screw that is created specifically for use with a padlock. To add the padlock device, substitute one of the four screws with the padlock adaptor screw, shown in the figure below.
CHAPTER 2: INSTALLATION DGCM FIELD RTU INSTALLATION GUIDE
MULTILIN DGCM – INSTRUCTION MANUAL 29
Figure 12: Padlock device option
Power Supply and Voltage Inputs WiringCAUTION: Prior to servicing/commissioning ensure the Protective earth (PE) conductor is
connected to Earth Ground prior to conducting any work. In case of not having external enclosure, ensure that the protective earth (PE) terminal is suited with a recommended wire size of 14 AWG minimum.
The maximum pin torque for Power Supply and Voltage Input connectors is 0.6 Nm.
Figure 13: Protective Earth (PE) Terminal
Option for adding
security through a
padlock device
30 MULTILIN DGCM – INSTRUCTION MANUAL
DGCM FIELD RTU INSTALLATION GUIDE CHAPTER 2: INSTALLATION
CAUTION: In case of having a blown fuse, substitution must be done only for trained people. Use only fuses with similar characteristics.
Rogowski InputsIMPORTANT: The connection and installation of the Rogowski coil must be carried out by qualified
technicians aware of the risks involved to the presence of voltage and current
Connect RogowskiCoil Cable
The Rogowski coil cable must be introduced through the cable entry system as shown in figure below.
Figure 14: Cable Entry System
Depending on the DGCM model, only slot #1 or slot #2 terminals are available for connecting Rogowski coils. In addition, each Rogowski module has terminals for three feeders. Three standard cables come from any Rogowski coil:
• Black
• White
• Shield
Black and white cables are the ones with the signal and must be connected to the terminals indicated as (Black) and (White) in the connector. Ground must be connected to the terminal marked with (GND).
Rogowski CoilInstallation
IMPORTANT: Before installing the coil around a conductor that is not insulated, check that it is not powered.
Voltage inputs are fused with the following characteristics:
Rated Current [A]: 5 Amps
Rated Voltage [VAC]: 500 Vac
Breaking Capacity: 1500 A @ 500 Vac
Voltage Drop 1.0In typ [mV]: 135 mV
Power Dissipation 1.5In typ [mW]: 2.2 mW
CHAPTER 2: INSTALLATION DGCM FIELD RTU INSTALLATION GUIDE
MULTILIN DGCM – INSTRUCTION MANUAL 31
IMPORTANT: Check if the coil is properly installed, an improper locking can affect measurement accuracy and the coil will become sensitive from adjacent conductors.
Follow these steps to install the Rogowski coil in the cable:Fit the coil around the conductor.Lock the coil using the locking mechanism. See figure below.Make sure that the arrow (indicating current direction in the coils) is in accordance with the flow current direction in the conductor.
Figure 15: Fit Rogowski coil around conductor
Setting Rogowski CoilData
Sensor Correction factors must be set in DGCM according to Rogowski coil data. These correction factors are located in the calibration report attached to every coil. Settings for the sensor corrections in the DGCM are located in S2 System Setup / Current Setup / Current Source 1 (6). Follow these steps:
1. Once the Rogowski coil is installed around the conductor, take note of the Feeder and the Phase where the coil is placed.
2. Take the calibration data sheet corresponding to the installed coil. Check that the serial number placed in the coil corresponds with serial number shown in calibration report.
3. Using Enervista, enter the values for CT Magnitude and CT Phase Shift shown in the calibration report in the appropriate settings for DGCM. Check that the Feeder and phase corresponds to where the coil is installed. (CT1 corresponds to L1, CT2 corresponds to L2, and CT3 corresponds to L3).
Arrow indicating current
flow in conductor
32 MULTILIN DGCM – INSTRUCTION MANUAL
DGCM FIELD RTU INSTALLATION GUIDE CHAPTER 2: INSTALLATION
NOTE
NOTE: High Metering error can be introduced if incorrect calibration data is entered.
MULTILIN DGCM – INSTRUCTION MANUAL 33
Multilin DGCM Field RTU
Chapter 3: Interfaces
Interfaces
The DGCM has the following communication and connection interfaces on its front panel.
Figure 1: Front panel interfaces
• LED indicators: see Settings chapter, Front Panel for more information
• RJ45 Ethernet port: see Introduction chapter, Specifications for more information
• USB serial port: see Introduction chapter, Specifications for more information
• RS485 serial port: see Introduction chapter, Specifications for more information
• Integrated cellular card
• SD card: note that this interface is available in Q4 of 2013.
• Cellular antenna
• Power supply: see Introduction chapter, Specifications for more information
• 3-phase voltage input: see Electrical Installation chapter, Installation for more information.
34 MULTILIN DGCM – INSTRUCTION MANUAL
SOFTWARE SETUP CHAPTER 3: INTERFACES
Software Setup
EnerVista DA Setup SoftwareAlthough settings can be entered manually using the control panel keys, a PC can be used to download settings through the communications port. The software is available from GE Digital Energy to make this as convenient as possible. With running, it is possible to:
• Program and modify settings
• Load and save setting files to and from a disk
• Read actual values
• Monitor status
• Read pre-trip data and event records
• Get help on any topic
• Upgrade the firmware
The software allows immediate access to all features with easy to use pull down menus in the familiar Windows environment. This section provides the necessary information to install, upgrade the relay firmware, and write and edit setting files.The DGCM software can run even if the DGCM is not connected to the computer. In this case, settings may be saved to a file for future use. If the DGCM communications are enabled, the DGCM addition, measured values, status and trip messages can be displayed on the actual value screens.
Hardware andSoftware
Requirements
The following requirements must be met for the software.
• Microsoft Windows™ 7 / XP is installed and running properly.
• At least 100 MB of hard disk space is available.
• At least 256 MB of RAM is available.
The software can be installed from either the GE EnerVista CD or the GE Digital Energy website at http://www.gedigitalenergy.com.
Installing theEnerVista DGCM
Setup Software
After ensuring the minimum requirements indicated earlier, use the following procedure to install the EnerVista DGCM Setup software from the enclosed GE EnerVista CD.
1. Insert the GE EnerVista CD into your CD-ROM drive.
2. Click the Install Now button and follow the installation instructions to install the no-charge EnerVista software on the local PC.
3. When installation is complete, start the EnerVista Launchpad application.
4. Click the IED Setup section of the LaunchPad toolbar.
CHAPTER 3: INTERFACES SOFTWARE SETUP
MULTILIN DGCM – INSTRUCTION MANUAL 35
5. In the EnerVista Launchpad window, click the Add Product button and select the DGCM Controller as shown below. Select the Web option to ensure the most recent software release, or select CD if you do not have a web connection, then click the Add Now button to list software items for the DGCM.
6. EnerVista Launchpad will obtain the latest installation software from the Web or CD and automatically start the installation process. A status window with a progress bar will be shown during the downloading process.
7. Select the complete path, including the new directory name, where the EnerVista DGCM Setup software will be installed.
8. Click on Next to begin the installation. The files will be installed in the directory indicated, the USB driver will be loaded into the computer, and the installation program will automatically create icons and add EnerVista DGCM Setup software to the Windows start menu.
9. The DGCM device (DA Setup) will be added to the list of installed IEDs in the EnerVista Launchpad window, as shown below.
36 MULTILIN DGCM – INSTRUCTION MANUAL
SOFTWARE SETUP CHAPTER 3: INTERFACES
If you are going to communicate from your computer to the Relay using the USB port:
10. Plug the USB cable into the USB port on the Relay then into the USB port on your computer.
11. Launch Enervista DA Setup from LaunchPad by double-clicking the DA Setup icon.
12. In EnerVista > Device Setup:
CHAPTER 3: INTERFACES SOFTWARE SETUP
MULTILIN DGCM – INSTRUCTION MANUAL 37
13. Select USB as the Interface type.
14. Select DGCM as the USB device.
Connecting EnerVista DGCM Setup to the Device
Configuring SerialCommunications
Before starting, verify that the cable is properly connected to either the USB port (for USB communications) or to the RS485 terminals (for RS485 communications). For RS485 communications, the Multilin F485 converter will be required. Refer to the F485 manual for additional details.
Figure 2: RS232-RS485 Convertor Connected to PC and DGCM
This example demonstrates a USB connection.
1. Install and start the latest version of the software (available from the GE Digital Energy web site). See the previous section for the installation procedure.
(-)
(+)(+)
(-)
38 MULTILIN DGCM – INSTRUCTION MANUAL
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2. Click on the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.
3. Enter the desired site name in the "Site Name" field. If desired, a short description of the site can also be entered. In this example, we will use “Substation 1” as the site name.
4. The new site will appear in the upper-left list in the window.
5. Click the Add Device button to define the new device.
6. Enter the desired name in the "Device Name" field and a description (optional) of the device.
7. Select “Serial” from the Interface drop-down list. Note that the Slave address, COM Port, Baud Rate, Parity, Bits, and Stop Bits settings are configurable.
8. Click the Read Order Code button to connect to the device and upload the order code.
9. Click OK when the relay order code has been received. The new device will be added to the Site List window (or Online window) located in the top left corner of the main window.
The Site Device has now been configured for USB communications. Proceed to Connecting to the DGCM below, to begin communications.
Connecting to theRelay Using Ethernet
Port
Connect to the DGCM through the Ethernet port as follows:
1. Remove the Ethernet cable from the DGCM. Connect an Ethernet cable from the DGCM to the PC (cross cable or direct cable in case of using switch or hub).
2. Run the EnerVista DA Setup software installed in the PC.
3. Click on the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.
4. Enter the desired site name in the "Site Name" field. If desired, a short description of the site can also be entered. In this example we use “New Site 1” as the site name.
5. The new site appears in the upper-left list in the EnerVista DA Setup window.
6. Click the Add Device button to define the new device.
7. Enter the desired name in the "Device Name" field and a description (optional) of the device.
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8. Select “Ethernet” from the Interface drop-down list.
9. The default DGCM IP Address is 192.168.1.100. The Slave Address is 254 and the Modbus Port is 502.
10. Click the Read Order Code button to connect to the DGCM device and upload the order code.
11. Click OK when the relay order code has been received. The new device is added to the Site List window (or Online window) located in the top left corner of the main EnerVista DA Setup window.
12. If the DGCM is connected to GPRS through a modem, these steps can be followed to communicate with a PC connected to same network. In this case, the Ethernet cable must not be removed from the DGCM.
Using the QuickConnect Feature
The Quick Connect button can be used to establish a fast connection through the front panel USB port of a DGC device. The following window will appear when the QuickConnect button is pressed:
As indicated by the window, the "Quick Connect" feature can quickly connect the software to a front port if a USB is selected in the interface drop-down list. Select a device and press the Connect button. When connected, a new Site called “Quick Connect” will appear in the Site List window.
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The DGC Device has now been configured via the Quick Connect feature for USB communications. Proceed to Connecting to the DGCM, below, to begin communications.
Connecting to theDGCM
Now that the communications parameters have been properly configured, the user can easily communicate with the device.
1. Expand the Site list by double clicking on the site name or clicking on the «+» box to list the available devices for the given site.
2. Desired device trees can be expanded by clicking the «+» box. The following list of headers is shown for each device:Device DefinitionActual ValuesSetpointsCommandsMaintenance.
3. Expand the SETPOINTS > S1 PRODUCT SETUP list item and double click on Front Panel to open the "Front Panel" settings window as shown below:
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4. The "Front Panel" settings window will open with a corresponding status indicator on the lower left of the EnerVista DGCM Setup window.
5. If the status indicator is red, verify that the serial or USB cable is properly connected to the relay, and that the device has been properly configured for communications (steps described earlier).
The "Front Panel" settings can now be edited, printed, or changed. Other settings and command windows can be displayed and edited in a similar manner. "Actual Values" windows are also available for display. These windows can be arranged, and resized at will.
Working with Settings and Settings Files
Engaging a Device The EnerVista DGCM Setup software may be used in on-line mode (relay connected) to directly communicate with a DGC device. Communicating devices are organized and grouped by communication interfaces and into sites. Sites may contain any number of devices selected from the product series.
File Support Opening any file will automatically launch the application or provide focus to the already opened application. If the file is a settings file (has a ‘DGC’ extension) which had been removed from the Settings List tree menu, it will be added back to the Settings List tree.New files will be automatically added to the tree.
Using Settings Files The software interface supports three ways of handling changes to DGCM settings:
• In off-line mode (DGC disconnected) to create or edit DGC settings files for later download to communicating DGC devices.
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• Directly modifying DGC settings while connected to a communicating DGC device, then saving the settings when complete.
• Creating/editing settings files while connected to a communicating DGC device, then saving them to the device when complete.
Settings files are organized on the basis of file names assigned by the user. A settings file contains data pertaining to the following types of DGC settings:
• Device Definition
• Setup
• System Setup
• Control
Factory default values are supplied and can be restored after any changes.The displays DGC settings with the same hierarchy as the front panel display.
Downloading andSaving Settings Files
Settings must be saved to a file on the local PC before performing any firmware upgrades. Saving settings is also highly recommended before making any settings changes or creating new settings files.The settings files in the window are accessed in the Files Window. Use the following procedure to download and save settings files to a local PC.
1. Ensure that the site and corresponding device(s) have been properly defined and configured as shown in Connecting to the DGCM, above.
2. Select the desired device from the site list.
3. Select the Online > Read Device Settings from Device menu item, or right-click on the device and select Read Device Settings to obtain settings information from the device.
4. After a few seconds of data retrieval, the software will request the name and destination path of the settings file. The corresponding file extension will be automatically assigned. Press Receive to complete the process. A new entry will be added to the tree, in the File pane, showing path and file name for the setting file.
Adding Settings Filesto the Environment
The software provides the capability to review and manage a large group of settings files. Use the following procedure to add an existing file to the list.
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1. In the files pane, right-click on Files and select the Add Existing Setting File item as shown:
2. The Open dialog box will appear, prompting the user to select a previously saved settings file. As for any other MS Windows® application, browse for the file to be added then click Open. The new file and complete path will be added to the file list.
Creating a NewSettings File
The software allows the user to create new settings files independent of a connected device. These can be uploaded to a device at a later date. The following procedure illustrates how to create new settings files.
1. In the File pane, right click on File and select the New Settings File item. The following box will appear, allowing for the configuration of the settings file for the correct firmware version. It is important to define the correct firmware version to ensure that settings not available in a particular version are not downloaded into the device.
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2. Select the Firmware Version, and Order Code options for the new settings file.
3. For future reference, enter some useful information in the Description box to facilitate the identification of the device and the purpose of the file.
4. To select a file name and path for the new file, click the button beside the File Name box.
5. Select the file name and path to store the file, or select any displayed file name to replace an existing file. All settings files should have the extension ‘DGC’ (for example, ‘feeder1.DGC’).
6. Click OK to complete the process. Once this step is completed, the new file, with a complete path, will be added to the EnerVista DGCM Setup software environment.
Upgrading SettingsFiles to a New
Revision
It is often necessary to upgrade the revision for a previously saved settings file after the firmware has been upgraded. This is illustrated in the following procedure:
1. Establish communications with the relay.
2. Select the Maintenance > M1 Relay Info menu item and record the Firmware Revision.
3. Load the settings file to be upgraded into the EnerVista DGCM Setup environment as described in the section, Adding Settings Files to the Environment.
4. In the File pane, select the saved settings file.
5. From the main window menu bar, select the Offline > Edit Settings File Properties menu item and note the File Version of the settings file. If this version is different from the Firmware Revision noted in step 2, select a New File Version that matches the Firmware Revision from the pull-down menu.
6. For example, if the firmware revision is 1.20 and the current settings file revision is 1.10, change the settings file revision to “1.2x”.
7. Enter any special comments about the settings file in the "Description" field.
8. Select the desired firmware version from the "New File Version" field.
9. When complete, click OK to convert the settings file to the desired revision. See Loading Settings from a File below, for instructions on loading this settings file into the DGCM device.
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Printing Settings andActual Values
The EnerVista DGCM Setup software allows the user to print partial or complete lists of settings and Actual Values. Use the following procedure to print a list of settings:
1. Select a previously saved settings file in the File pane or establish communications with a device.
2. From the main window, select the Offline > Export Settings File menu item.
3. The Print/Export Options dialog box will appear. Select Settings in the upper section and select either Include All Features (for a complete list) or Include Only Enabled Features (for a list of only those features which are currently used) in the filtering section and click OK.
4. The process for Offline > Print Preview Settings File is identical to the steps above.
5. Settings lists can be printed in the same manner by right clicking on the desired file (in the file list) or device (in the device list) and selecting the Print Device Information or Print Settings File options.
Printing Actual Valuesfrom a Connected
Device
A complete list of actual values can also be printed from a connected device with the following procedure:
1. Establish communications with the desired device.
2. From the main window, select the Online > Print Device Information menu item
3. The Print/Export Options dialog box will appear. Select Actual Values in the upper section and select either Include All Features (for a complete list) or Include Only Enabled Features (for a list of only those features which are currently used) in the filtering section and click OK.
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Actual Values lists can be printed in the same manner by right clicking on the desired device (in the device list) and selecting the Print Device Information option.
Loading Settings froma File
FASTPATH: The following procedure illustrates how to load settings from a file. Before loading a settings file, it must first be added to the environment as described in the section, Adding Settings Files to the Environment.
1. Select the previously saved settings file from the File pane of the EnerVista DGCM Setup software main window.
2. Select the Offline > Edit Settings File Properties menu item and verify that the corresponding file is fully compatible with the hardware and firmware version of the target device. If the versions are not identical, see Upgrading Settings Files to a New Revision for details on changing the settings file version.
3. Right-click on the selected file and select the Write Settings File to Device item.
4. Select the target device from the list of devices shown and click Send. If there is an incompatibility, an "Incompatible device..." error message will be shown.
An error message will occur when attempting to download a settings file with a revision number that does not match the relay firmware. If the firmware has been upgraded since saving the settings file, see for instructions on changing the revision number of a settings file. If there are no incompatibilities between the target device and the settings file, the data will be transferred to the device. An indication of the percentage completed will be shown in the bottom of the main window.
Upgrading DGCM firmwareTo upgrade the DGCM firmware, follow the procedures listed in this section. Upon successful completion of this procedure, the device will have new firmware installed with the factory default settings.The latest firmware files are available from the GE Digital Energy website at http://www.digitalenergy.com.
NOTE
NOTE: EnerVista DGCM Setup software prevents incompatible firmware from being loaded into a DGC device.
FASTPATH: Before upgrading firmware, it is very important to save the current DGCM settings to a file on your PC. After the firmware has been upgraded, it will be necessary to load this file back into the device. Refer to Downloading and Saving Settings Files for details on saving settings to a file.
Loading new DGCfirmware
Loading new firmware into the flash memory is accomplished as follows:
1. Connect the device to the local PC and save the settings to a file as shown in Downloading and Saving Settings Files.
2. Select the Maintenance > Update Firmware menu item.
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3. The software will request the new firmware file. Locate the folder that contains the firmware files to load into the relay. The firmware filename has the following format:
4. EnerVista DGCM Setup software now prepares the to receive the new firmware file. The front panel will momentarily display "DGC BOOT PROGRAM Waiting for Message,” indicating that it is in upload mode.
5. While the file is being loaded into the device, a status box appears showing how much of the new firmware file has been transferred, and the upgrade status. The entire transfer process takes approximately 10 minutes.
6. The software will notify the user when the EnerVista DGCM Setup program has finished loading the file. Carefully read any displayed messages and click OK to return the main screen. Cycling power to the relay is recommended after a firmware upgrade.
After successfully updating the firmware, the device will not be in service and will require settings programming. To communicate with the relay, the communication settings may have to be manually reprogrammed.When communications are established, the saved settings must be reloaded back into the device. See Loading Settings from a File for details.Modbus addresses assigned to firmware modules, features, settings, and corresponding data items (i.e. default values, min/max values, data type, and item size) may change slightly from version to version of the firmware.Addresses are rearranged when new features are added or existing features are enhanced or modified.
Advanced EnerVista DGCM Setup features
Event records The EnerVista DGCM Setup software can be used to capture events from the device at the instance of a pickup, trip, alarm, or other condition.
• With EnerVista DGCM Setup software running and communications established, select the Actual Values > A3 Records > Event Records menu item to open the Event Records Viewer window.
MJ M03 M A 100 . 000
Modification Number (000 = none)
Board Assembly Rev #
Code Type in Memory Device
PCB Code Number
Product Reference Code (MJ = DGC)
Firmware Rev #
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• Click on the Save Events button to save the selected events to the local PC.
Data logger The data logger feature is used to sample and record up to ten actual values at a selectable interval. The datalogger can be run with Continuous mode Enabled, which will continuously record samples until stopped by the user; or with Continuous mode Disabled, which will trigger the datalog once without overwriting previous data.Viewing and saving of the Datalogger is performed as follows:
1. With running and communications established, select the A3 Records > Data Logger menu item to open the datalog setup window:
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2. If Continuous mode is enabled, click on Stop to stop the datalog
3. Click on the Save to File button to save the datalog to the local PC. A new window will appear requesting for file name and path.
4. One file is saved as a COMTRADE file, with the extension ‘CFG’. The other file is a DAT file, required by the COMTRADE file for proper display of data.
5. To view a previously saved COMTRADE file, click the Open button and select the corresponding COMTRADE file.
6. To view the datalog, click the Launch Viewer button. A detailed Datalog window will appear as shown below.
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7. The datalog can be set to capture another buffer by clicking on Run (when Continuous mode is enabled), or by clicking on Release (when Continuous mode is disabled).
Display graph valuesat the correspondingcursor line. Cursorlines are identified bytheir colors.
CURSORLINESTo move lines locate the mouse pointerover the cursor line then click and dragthe cursor to the new location.
DELTAIndicates time differencebetween the two cursor lines
TRIGGER LINE
Indicates thepoint in time forthe trigger
FILE NAME
Indicates thefile name andcomplete path(if saved)
TRIGGER TIME & DATE
Display the time & date of theTrigger
VECTOR DISPLAY SELECT
Click here to open a new graphto display vectors
CURSOR LINE POSITION
Indicate the cursor line positionin time with respect to thetrigger time
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Multilin DGCM Field RTU
Chapter 4: Actual values
Actual values
This chapter describes the Actual Values setting for the DGCM which includes A1 Status, A2 Metering, and A3 Recording Functionality.
A1 Status
The main A1 Status menu screen is shown below:
ClockThe A1 Status includes a clock that performs time stamping for various A1 Status values. The current date and time values are read-only and cannot be set.PATH: ACTUAL VALUES > A1 STATUS > CLOCK
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CURRENT DATEMay 8 2013
Range: Date in format shown
Indicates today’s date.
CURRENT TIME14:25:50
Range: Time in format shown
Indicates the current time of day.
ModemThe status of the GPRS Modem is shown in the status screen, see below. The parameters displayed are SIM Status, Signal Level, Network Registration, and Connection status, IP Address, Version, IMSI and IMEI.
NOTE
NOTE: The internal modem (GSM/GPRS) settings screen is hidden in the offline file.
This value provides information about the status of the SIM card, such as if there is an error, or the PIN code is needed.
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SIGNAL LEVEL (RSSI)
Range: 0 to 31, 99Default: 99 (no signal)
The RSSI value gives the signal strength received in dBm.
NETWORK REGISTRATION
Range: No, YesDefault: No
The Network Registration status indicates whether the internal modem is registered to the network.
Possible causes for not being registered are the following:
– Poor signal strength. Check that the antenna is properly connected and experiment with different locations.A problem with the SIM card. Ensure that the SIM card is enabled with the network provider.
If the Connection Status does not show as “Connected”, please check for the following:
– Function parameter is set to “Enabled”.
– A problem with the APN, username or password, if showing continuously “Connecting”.
IP ADDRESS
Range: 000.000.000.000Default: 000.000.000.000
The value shown is the IP address assigned by the network operator.
VERSION
Range: xx.xx.xxxDefault: 13.00.002
The version shown is the firmware version of the internal modem.
IMSI
Range: 15 numbers
The IMSI shown is the International Mobile Subscriber Identity stored in the SIM.
IMEI
Range: 15 or 16 numbers
This is the Product Serial Number Identification. It is identified as the mobile IMEI.
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Contact inputsThe state of all active contact inputs is displayed here. PATH: ACTUAL VALUES > A1 STATUS > CONTACT INPUTS
CONTACT INPUTS 1 to 32OFF
Range: Off, On
Contact outputsThe state of all active contact outputs is displayed here. PATH: ACTUAL VALUES > A1 STATUS > CONTACT OUTPUTS
CONTACT INPUTS 1 to 32OFF
Range: Off, On
Virtual inputsThe state of all active virtual inputs is displayed here. PATH: ACTUAL VALUES > A1 STATUS > VIRTUAL INPUTS
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VIRTUAL INPUTS 1 to 32OFF
Range: Off, On
Virtual outputsThe state of all active virtual outputs is displayed here. PATH: ACTUAL VALUES > A1 STATUS > VIRTUAL OUTPUTS
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VIRTUAL OUTPUTS 1 to 32OFF
Range: Off, On
Flexlogic summaryPATH: ACTUAL VALUES > A1 STATUS > FLEXLOGIC SUMMARY
FLEXLOGIC STATUSFLEX LINES USED
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A2 Metering
The DGCM provides a high amount of data measurements from feeders. This device is designed to collect and measure the maximum number of parameters of the LV feeders for statistical, control, and some protection/detection applications.The DGCM is programmed internally to capture samples from current and voltage sensors at a frequency rate of 64 samples per power system cycle.Detection functions and the metering task are executed two times per power cycle. In addition, the actual values related to statistical analysis are taken at a sampling rate of 1 sample/second.The main status metering menu is shown below:
Current source 1 (6)PATH: ACTUAL VALUES > A2 METERING > PH CURRENT SOURCE 1 (6)
The DGC Monitoring Device measures and computes the following electrical quantities.
The following screen captures list the parameter values available for viewing from each current source.
Current The individual DFT phase current and phase angle quantities are shown for each current source available. The screen capture below shows current values from Current Source 1.
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Sequences The individual sequence (l1, l2, l0) and sequence angle quantities are shown for each source available. The screen capture below shows sequence values from Current Source 1.
Total HarmonicDistortion (THD)
The individual total harmonic distortion quantities are shown for each source. The screen capture below is taken from Current Source 1.
Power Specific power (real, reactive and apparent) quantities and factors for computing these values are shown for each source available. The screen capture below shows power values from Current Source 1.
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Energy Energy quantities and measured values are shown for each source available. The screen capture below shows quantities obtained from Current Source 1.
A2 POWER (1/6) Value Description
Phase A Active Power 0.0 W Phase A Real Power
Phase A Reactive Power 0.0 VAr Phase A Reactive Power
Phase A Apparent Power 0.0 VA Phase A Apparent Power
Phase A PF 0.0 Phase A Power Factor
Phase B Active Power 0.0 W Phase B Real Power
Phase B Reactive Power 0.0 VAr Phase B Reactive Power
Phase B Apparent Power 0.0 VA Phase B Apparent Power
Phase B PF 0.0 Phase B Power Factor
Phase C Active Power 0.0 W Phase C Real Power
Phase C Reactive Power 0.0 VAr Phase C Reactive Power
Phase C Apparent Power 0.0 VA Phase C Apparent Power
Phase C PF 0.0 Phase C Power Factor
Three Phase Active Power 0.0 W Three Phase Real Power
Three Phase Reactive Power 0.0 VAr Three Phase Reactive Power
Three Phase Apparent Power 0.0 VA Three Phase Apparent Power
Power Factor 0.0 Power Factor
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Power QuantityStatistics
The sampled statistical values are shown for each source available. The screen capture below shows measurements obtained from Current Source 1.
BusIf all feeders are located at the LV side and programmed as LV outgoing Side, these registers provide the sum of all currents of the outgoings feeders per phases.PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2)
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The screen captures shown below list the parameter values available for viewing from each bus. The screen captures show the values taken from Bus 1.PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2) > CURRENT
PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2) > SEQUENCE
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PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2) > POWER
PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2) > ENERGY
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PATH: ACTUAL VALUES > A2 METERING > BUS 1 (2) > POWER QUANTITY STATISTICS
Voltage sourcePATH: ACTUAL VALUES > A2 METERING > VOLTAGE SOURCE 1(2)
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PATH: ACTUAL VALUES > A2 METERING > VOLTAGE SOURCE 1(2) > VOLTAGE
ACTUAL VALUES > A2 METERING > VOLTAGE SOURCE 1(2) > SEQUENCE
ACTUAL VALUES > A2 METERING > VOLTAGE SOURCE 1(2) > THD
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ACTUAL VALUES > A2 METERING > VOLTAGE SOURCE 1(2) > POWER QUANTITY STATISTICS
FrequencyPATH: ACTUAL VALUES > A2 METERING > FREQUENCY
FREQUENCY0.00 Hz
Range: 40.00 to 70.00 Hz
Power calculationWhen the DGCM is connected to all three-phase currents and voltages, the three-phase power is calculated as a sum of the three individual phase power quantities.Refer to the following diagram showing the three-phase power computation for each combination of voltage and current input that is programmable under the Voltage and Current sensing setup menus:
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Figure 1: DGC Power Calculation
For all equations below, the rotated phasor is the current phasor. The asterisk identifies conjugate value.0) Three phase based on one phase calculation
1) Three phase based on one phase calculation
2) Three phase based on one phase calculation
3) Three phase based on one phase calculation
4) Three phase based on one phase calculation
5) Three phase based on one phase calculation
6) Three phase direct calculation
7) Aron method
Examples:A. VT connected between Phase A and B, VT = VAB. Current input from phase C: IC. Test voltage and current values:
From the table, equation # 4 will be applied:
1- The current phasor is rotated by –90 degrees.
Therefore the active and reactive power are calculated as follows:2-
3-
B. Vt connected to phase C: VT = Vc . Current input from phase A: IA.
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Test voltage and current values:
From the table, equation # 2 will be applied:
4- The current phasor is rotated by –240 degrees.
5-
6-
A3 Records
Figure 2: Records menu structure
Event recordsEvent Records include events generated by operation of the following functions:
• Control functions
• Alarms, Blocks
• Change of inputs.
The events are stored in memory, which can store up to 1024 events. Each event is stored with an event number, date, time, and analog data of interest. The following screen capture shows the analog data viewable for each recorded event.
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Data loggerThe data logger is used to sample and record actual values at a selectable time interval. The stored actual values are chosen according to the user’s criteria. For a list of available settings, refer to Chapter 5: Settings / S1 Product Setup / Data Logger.
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Multilin DGCM Field RTU
Chapter 5: Setpoints
Setpoints
This chapter describes the Settings for the DGCM which includes S1 Status, S2 Metering, S3 Configuration, S4 Controls, and S5 Inputs/Outputs.
S1 Product Setup
The main Product Setup menu screen is shown below.
Clock SetupThe DGCM has an internal real time clock that performs time stamping for various features such as the event and transient recorders.Time synchronization priority uses Modbus or DNP commands as follows:Synchronization commands are all eventually translated into a MODBUS function, and as such are blocked from the MODBUS layer as required.There is no prioritization amongst synchronization commands. A synchronization command issued from DNP for example, can be directly followed by another from MODBUS, for example.
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PATH: SETPOINTS > S1 PRODUCT SETUP > CLOCK SETUP
DATE: (MM/DD/YYYY)
Range: Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sept, Oct, Nov, Dec / Day: 1 to 31 / Year: 2009 to 2099Default: Jan 15 2009
This setting sets the date in the specified format.
TIME: (HH:MM:SS)
Range: 0 to 23: 0 to 59: 0 to 59Default: 03:15:50
This setting sets the time in the specified format.
Range: Not Set, January, February, March, April, May, June, July, August, September, October, November, DecemberDefault: Not Set
This setting sets the month for the DLS start time.
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DLS START WEEK:
Range: Not Set, 1st, 2nd, 3rd, 4th, LastDefault: Not Set
This setting sets the week of the month for the DLS start time.
DLS START WEEKDAY:
Range: Not Set, Mon, Tue, Wed, Thu, Fri, Sat, SunDefault: Not Set
This setting sets the weekday for the DLS start time.
DLS END MONTH:
Range: Not Set, January, February, March, April, May, June, July, August, September, October, November, DecemberDefault: Not Set
This setting sets the month for the end of the DLS time.
DLS END WEEK:
Range: Not Set, 1st, 2nd, 3rd, 4th, LastDefault: Not Set
This setting sets the week of the month for the end of the DLS time.
DLS END WEEKDAY:
Range: Not Set, Mon, Tue, Wed, Thu, Fri, Sat, SunDefault: Not Set
This setting sets the weekday for the end of the DLS time.
SNTPThe DGCM supports the Simple Network Time Protocol specified in RFC-2030. With SNTP, the DGCM can obtain clock time over an Ethernet network. The DGCM acts as an SNTP client to receive time values from an SNTP/NTP server, usually a dedicated product using a GPS receiver to provide an accurate time.To use SNTP, the SNTP IP ADDR must be set. Once the address is set and SNTP FUNCTION is “Enabled”, the DGCM attempts to obtain time values from the SNTP/NTP server. Since many time values are obtained and averaged, it generally takes three to four minutes until the DGCM clock is closely synchronized with the SNTP/ NTP server. It may take up to two minutes for the DGCM to signal an SNTP self-test error if the server is offline.
Password SecurityThe DGCM has password security features that are designed into the device to provide protection against unauthorized setting changes and control. The DGCM has programmable passwords for access, which can be used to allow settings changes and command execution from the communications ports. Two levels of password security are provided on the DGCM: Settings and Controls. These levels of operation can be accessed either locally (Local passwords) through the front panel and the USB port, or remotely (Remote passwords) via the RS485, Ethernet and GPRS ports. These passwords consist of 3 to 10 alphanumeric characters. The user can have either Setpoint or Control Level active, but not both simultaneously from the same interface.Higher rights are assigned to remote access. While using the EnerVista PC program, the remote user can overwrite the local passwords or can reset all local and remote passwords. For resetting the passwords, the remote user must enter a valid Master Password. The Master Reset Password must be 8 to 10 characters in length, and must
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contain at least two letters and two numbers. Ethernet, RS485, and GPRS ports share the same passwords (Local/Remote). The front panel and USB port share the same passwords (Local/Remote).The Master Level is used for the setting and resetting of passwords, and includes all Settings and Control Level access rights.In general, any command given to the DGCM by the user requires entering a controls password.Operations available under the CONTROLS password includes:
• Reset and Clear (statistics) commandsVirtual Input commandsClearing of event records, Data Logger, and other dataUploading new firmwareChanging the Local or Remote Control Password, depending on the interface being accessed.
Any DGCM feature associated with a menu of setting points where the user can permanently set the control or alarm conditions requires a valid SETPOINTS password.Operations available under the SETPOINTS password include:
• Changing settings available under the SETPOINTS menu. This excludes the features that require a CONTROLS password, as listed above.
• Changing any setting under MAINTENANCE such as DGCM maintenance settings. This excludes the features that require a CONTROLS password, as listed above.
After local or remote password entry, the access level is maintained until a period of 5 minutes of inactivity has elapsed, after which the password must be re-entered. A power loss or entering the wrong password logs the user out of security
CommunicationsThe Communications screen is shown below.
RS485 interface The DGCM is equipped with one serial RS485 communication port. The RS485 port has settings for baud rate and parity. It is important that these parameters agree with the settings used on the computer or other equipment that is connected to these ports. This port may be connected to a computer running the EnerVista DGCM Setup software. This software can download and upload setting files, view measured parameters, and upgrade the device firmware. A maximum of 32 -series devices can be daisy-chained and connected to a DCS, PLC, or PC using the RS485 port.Select the SETPOINTS > S1 PRODUCT SETUP > COMMUNICATIONS > RS485 path in the program, to configure the serial port.
Figure 1: Serial port configuration settings
The following settings are available to configure the RS485 port.
This setting specifies the baud rate (bits per second) for the RS485 port.
RS485 PARITY
Range: None, Odd, EvenDefault: None
This setting specifies the parity for the RS485 port.
REAR 485 PORT PROTOCOL
Range: Modbus, DNP3Default: Modbus
This setting specifies the rear 485 port protocol for the RS485 port.
NOTE
NOTE: The DGCM must be power cycled after changing this RS485 setting.
COMMUNICATIONS FAILURE ALARM
Range: OFF, 5s to 25sDefault: OFF
This setting gives the communication failure alarm after the specified time delay.
Ethernet interface The DGCM is equipped with one Ethernet communication port. The Ethernet port has settings for IP address, Subnet IP address and Gateway address. The IP addresses are used with the DNP and Modbus/TCP protocols.Select the Setpoints > S1 Product Setup > Communications > Ethernet menu item in the program to configure the Ethernet port.
The following settings are available to configure the Ethernet port.
ETHERNET IP ADDRESS
Range: Standard IP Address formatDefault: 192.168.1.100
This Ethernet port setting sets the IPV4 address in the IPV4 format.
ETHERNET SUBNET MASK
Range: Standard IP Address formatDefault: 255.255.255.0
Use this setting to set the port's IPV4 address in the IPV4 format.
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ETHERNET GATEWAY ADDRESS
Range: Standard IP Address formatDefault: 0.0.0.0
This setting sets the port's IPV4 address in the IPV4 format.
GPRS modem The DGCM supports an internal modem (GPRS modem). In order to configure and monitor the internal modem, the following settings and status are available. Refer to the DGCM Communications Guide for additional details on the GPRS Modem.Select the SETPOINTS > S1 PRODUCT SETUP > COMMUNICATIONS > MODEM path to set up the GPRS modem protocol as shown below.
Figure 2: Modem protocol configuration settings
The following Modem settings are available:
FUNCTION
Range: Disable, EnableDefault: Disable
This setting enables or disables the internal modem. If the modem is disabled then it is in the OFF state without consumption and emissions.
ENTER PIN
Range: No, YesDefault: No
The SIM card has a PIN associated with it . If this setting is enabled then the application will try to set the PIN to gain access to the SIM.
SIM PIN
Range: **** (0000-9999)Default: *
This is the PIN number associated with the introduced SIM card. This PIN number must be encrypted.
APN
Range: N/ADefault: e.g., ac.vodafone.es
The GPRS Access Point Name specifying the APN is used when establishing a data session with the GSM-based network. The APN often determines how the user will be billed for their network usage and whether the user has access to the Internet or just a provider-specific walled-garden, so it is important to use the correct APN for the user's mobile broadband plan. APNs roughly follow the same rules as DNS domain names. The APN may only be composed of the characters “A-Z”, “a-z”, “0-9”, “.”, and “-“as per GSM 03.60 Section 14.9.
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AUTHENTICATION
Range: 0–None, 1–PAP, 2–CHAPDefault: 0–None
This setting defines the authentication protocol to be used when accessing the network. There are three possibilities: None, PAP, and CHAP.
PAP is used by Point-to-Point Protocol to validate users before allowing them access to server resources. PAP transmits unencrypted ASCII passwords over the network and is therefore considered unsecured. It is used as a last resort when the remote server does not support a stronger authentication protocol, like CHAP. CHAP is an authentication scheme used by PPP servers to validate the identity of remote clients. CHAP periodically verifies the identity of the client by using a three-way handshake. This happens at the time of establishing the initial link (LCP), and may happen again at any time afterwards. The verification is based on a shared secret (such as the client user's password).
USER
Range: ********Default: ********
The Name field is one or more octets representing the identification of the system transmitting the packet. There are no limitations on the content of this field, it may contain any ASCII character.
PASSWORD
Range: ********Default: (Encrypted)
The Password is the second parameter needed for the authentication process. It may also contain any ASCII character. It must be encrypted.
PING
Range: Disable, EnableDefault: Disable
This setting allows the ICMP protocol to be used to discover the device on the network. By default it is disabled protecting the device from remote attacks.
NETWORK INITIALIZATION TIMEOUT
Range: 5s to 600sDefault: 30s
This setting establishes the network registration, attachment and initialization timeout.
CONNECTION TIMEOUT
Range: 5s to 600sDefault: 45s
This setting specifies the time in seconds to allow for a connection to be established. This includes the context activation, the PPP negotiation and authentication process timeout.
Modbus The Modicon Modbus protocol is supported by the DGCM. Modbus is available via the RS485 serial link (Modbus RTU). The DGCM always acts as a slave device, meaning that it never initiates communications; it only listens and responds to requests issued by a master device. A subset of the Modbus protocol format is supported that allows extensive monitoring, programming, and control functions using read and write register commands. Refer to the DGCM Communications Guide for additional details on the Modbus protocol and the Modbus memory map.The Modbus server can simultaneously support two clients over serial RS485. The server is capable of reporting any indication or measurement and operating any output present in the device. A user-configurable input and output map is also implemented.
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The DGCM operates as a Modbus slave device onlySelect the SETPOINTS > S1 PRODUCT SETUP > COMMUNICATIONS > MODBUS menu item in software to set up the modbus protocol as shown below.
Figure 3: Modbus protocol configuration settings
The following Modbus settings are available:
MODBUS SLAVE ADDRESS
Range: 1 to 254 in steps of 1Default: 254
This setting specifies the Modbus slave address . Each device must have a unique address from 1 to 254. Address 0 is the broadcast address to which all Modbus slave devices listen. Addresses do not have to be sequential, but no two devices can have the same address or conflicts resulting in errors will occur. Generally, each device added to the link should use the next higher address starting at 1.
Please refer to the DGCM Communications Guide for details on how to set up the Modbus communications protocol.
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DNP communication The DNP (distributed network protocol) communication screen is shown below.PATH: SETPOINTS > S1 PRODUCT SETUP > COMMUNICATIONS > DNP
Please refer to the DGCM Communications Guide for more details on communications.
Event recorderThe Event Recorder includes events generated by operation of the following functions:
• Control functions
• Alarms
• Blocks
• Change of inputs
The events are stored in Flash memory, which can store up to 1024 events. Because Flash memory has a finite number of writings a 256 non-Volatile RAM buffer is used. This means that when an event is generated it is written in non-Volatile RAM first. After 10 minutes all the pending events written in non-Volatile RAM are copied to Flash memory. Two alternative event files are managed in Flash memory in order to prevent event loss. Each event is stored with an event number, date, time, and analog data of interest.
NOTE
NOTE: If there are more than 255 events between writing cycles in the Flash memory and power is lost, only the last 255 events are maintained in non-volatile RAM.
The following table shows the analog data viewable for each recorded event.
When set to “Enabled”, the event recorder records the events that occur when a monitoring element picks up.
DROPOUT EVENTS
Range: Disabled, EnabledDefault: Disabled
When set to “Enabled” the event recorder records the dropout state of a monitoring element.
ALARM EVENTS
Range: Disabled, EnabledDefault: Enabled
These events include the elements programmed as an “ALARM” or “LATCHED ALARM” function.
CONTROL EVENTS
Range: Disabled, EnabledDefault: Enabled
If set to “Enabled”, the event recorder records events caused by the performance of the programmed control elements.
BLOCK EVENTS
Range: Disabled, EnabledDefault: Enabled
If set to “Enabled”, the event recorder records events caused by the performance of the programmed block elements.
CONTACT INPUT EVENTS
Range: Disabled, EnabledDefault: Enabled
When set to “Enabled”, the event recorder will record the event when a contact input changes its state.
CONTACT OUTPUT EVENTS
Range: Disabled, EnabledDefault: Enabled
When set to “Enabled”, the event recorder will record the event when a contact output changes its state.
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VIRTUAL INPUT EVENTS
Range: Disabled, EnabledDefault: Enabled
When set to “Enabled”, the event recorder records the events which occur upon state changes of any virtual input.
VIRTUAL OUTPUT EVENTS
Range: Disabled, EnabledDefault: EnabledWhen set to “Enabled”, the event recorder records the events which occur upon state changes of any virtual outputs.
When set to “Enabled”, the event recorder records the events which occur upon changes to Date/Time.
Data LoggerThe Data Logger samples and records up to 200 analog parameters at a user-defined sampling rate. All data is stored in non-volatile memory to avoid the loss of data when power to the relay is lost.For a fixed sampling rate, the Data Logger can be configured with a few channels over a long period or a larger number of channels for a shorter period. The relay automatically partitions the available memory between the channels in use.Changing any setting affecting Data Logger operation clears any stored data. The relay will start sampling after any change in settings has been produced.The following settings are available:SETPOINTS > S1 PRODUCT SETUP > DATA LOGGER
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SAMPLE RATE
Range: 5 s, 1 min, 5 min, 15 min, 30 min, 60 min, interval at 64 samples/cycle (60Hz)Default: 30 min
This setting determines how often data is stored in the data log.
DATALOGGER SYNCHRO ENABLE
Range: Enabled, DisabledDefault: Enabled
This setting is used to synchronize data taken for the DataLogger with time.
Example 1:
If the sample rate is 30 minutes, and the DataLogger Synchro Enable is enabled, the Data Logger records the data at XX:00 and XX:30. This means that data is be synchronized with the time (exact hours and half hours).
Example 2:
If several DGCMs are in use in an application, enabling the Datalogger Synchro Enable setting allows the DGCMs to record data at the same time.
CHANNEL #1(200) SOURCE
Range: Any available analog valueDefault: Disabled
This settings determines the metering actual value that is stored in Channel 1(200) of the data log. The metering actual value selection can be done either by the scroll down option or by typing the appropriate initial characters of the actual value name into the field to narrow down the list.The actual value parameters available in a given relay is dependent on the ordering code and the hardware modules installed.
StatisticsThe DGCM calculates the mean average, max and min values based on the averaging interval programmed under Statistics menu. The DGCM provides the max, mean and min values per phase current and each current source. The number of current sources available in the relay is dependent on the selected order code. In order to avoid the storage of a large amount of data for the mean calculation, the mean value is calculated by applying the Exponential Moving Average (EMA). The mean calculated in this way differs from the Single Moving Average (SMA) during high transitions -spikes changes and abrupt transitions, but it has the advantage that the calculation is made in a recursive form by a simple IIR filter.The SMA is calculated as:
The SMA is calculated as:
S(t) = K x I(t) + S(t-1)x(k-1)
Where:
K = 2/(N+1)S(t) New EMA valueS(t-1) Previous EMA valueN Number of instantaneous current samples.
This setting selects the time interval at which the max, min and mean average is calculated. If a DL Sampling Rate is chosen, the applied interval is the same as the Data Logger sample rate.
This setting selects the working mode for the maximum and minimum calculation. In Latched mode, the maximum and minimum value is calculated continuously over new incoming data until the Max/ Min Clear command is received. In Windowing mode, the minimum and maximum values are updated taking into account the samples contained on the moving window time programmed under the AVERAGING INTERVAL setpoint. The interval window is moved at each new sample.
Front PanelThe DGCM front panel has 4 LEDs. All LEDs except the first LED illuminate red in color.
The first LED illuminates green and is reserved for showing the READY state of the DGCM.The rest of the red LEDs are programmable in two ways:
• “1” - Flashing mode in red color
• “2” - Fixed mode in red color
SETPOINTS > S1 PRODUCT SETUP > FRONT PANEL
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LEDs codes on Self-Test Error
The Self-Test task is a function that executes every 5 seconds and checks the internal states of several critical elements. The internal fault states available for DGCM are:
• Internal Temperature
• RTC Error
• Order Code Error
• System Health Error
• EEPROM Error
• DSP Error
• Calibration Error
• DPRAM Error
When the cause for a self-test error is generated, the four LEDs located on the front side of the DGCM device will indicate the error. The 4 LEDs start blinking and continue for 5 seconds showing the error. The maximum numbers of error that can be shown by the LEDs are 16. Due to these limitations, some errors cannot be reflected by the LED status.The LED’s internal fault error codes are as follows:
Range: Name, Alpha-numeric (20 characters)Default: DA Name
The PRODUCT NAME setting allows the user to uniquely identify a DGCM unit. This name will appear on generated reports. This name is also used to identify specific devices which are engaged in automatically sending/receiving data over the communications channel.
LED 1 (GREEN) LED 2 (RED) LED 3 (RED) LED 4 (RED)
Internal Temperature Error YES NO NO NO
Order Code Error NO YES NO NO
DSP Error YES YES NO NO
DPRAM Error NO NO YES YES
RTC Error YES NO YES YES
Calibration Error NO YES YES NO
EEPROM Error YES YES YES NO
System Health NO NO NO YES
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PRODUCT STATUS
Range: Not Ready, ReadyDefault: Not Ready
Allows the user to activate/deactivate the DGCM. The DGCM is not operational when set to "Not Ready."
S2 System setup
The DGCM Pad Mounted monitoring device can measure up to six three-phase analog current inputs and one three-phase analog voltage input connected through external measuring transformers.DGCM devices are designed to read current and voltage from different types of sources:
• Traditional CT
• Rogowski coils
• Traditional VT
• LEA (Low Energy Analog)
The DGCM’s order code defines the type of sensor used for each current or voltage source. During normal loading conditions the three-phase currents and voltages are well balanced. The controller is using the currents and voltages measured to compute the electrical power (apparent, active, and reactive) per each current bank. All electrical quantities measured and calculated by the controller is tabulated in Chapter 4 in the Metering Section.ConfigurationThe System setup screen is shown below.
Current setupThe DGCM device is completely configurable with up to 6 sets of 3-phase current inputs (maximum 6 feeders). Although the most common applications may include all sets of current sources located at the same bus on the secondary side of the transformer, each current source can be programmed to be located also on the other bus (i.e., Split bus configuration) at the transformer secondary.In addition, the current source can be associated with a corresponding voltage source to be used for power and energy calculations. The ‘Current Source’ name is taken as a convention for the configuration of the set of three-phase current banks. The Current setup menu screen is shown below.
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NOTE
NOTE: Each Current Source number is associated with a set of wiring input numbers on the back of the device. Refer to the wiring diagrams and the Installation section in this manual for more details.
NOTE
NOTE: The current setup menu is order code dependant.
Current source PATH: SETPOINTS > S2 SYSTEM SETUP > CURRENT SETUP > CURRENT SOURCE 1 (6)
Traditional CT
For devices with the Traditional CT option selected the settings are shown below.
Rogowski Coil
For devices with the Rogowski coil option selected the settings are shown below.
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NAME
Range: Up to 256 charactersDefault: Current Source 1
This setting gives the name of the feeder.
SOURCE 1(6)CT
Range: Enabled, DisabledDefault: Disabled
This setting is used to notify the device that Source 1 (6) is monitored. This setting enables the detection settings linked to Source 1 (6).
RATED PRIMARY I
For TRADITIONAL CT
Range: 1 to 3000 A in steps of 1 A Default: 250 A
For ROGOWSKI COIL/ SENSOR
Range: 1 to 600 A in steps of 1 A (*)
Enter the rated primary current used in the actual feeder in amperes.
NOTE
NOTE: * The value set with this setting is used as the base for per unit calculation for Protection elements.
RATED SECONDARY I(*)Range: 1 A, 5 ADefault: 1 A
The rated secondary current used in the actual feeder in amperes.
NOTE
NOTE: * The value set with this setting is used as the base for per unit calculation for Protection elements.
SENSOR 1/2/3 MAGNITUDE CORRECTION
Range: -15.0 to 15.0 in steps of 0.1Default: 1.000
The DGCM uses magnitude and phase correction factors to correct for manufacturing tolerances in the line-sensing equipment. This correction factor is specified on each Rogowski coil with tag. This setting specifies the correction magnitude that must be applied for the measurement taken from SENSOR 1, 2, or 3 input.
NOTE
NOTE: This setting is only available when current the current source is the Rogowski coil.
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SENSOR 1/2/3 PHASE ANGLE CORRECTION
Range: 0.0° to 359.9° in steps of 0.1°Default: 0.0° Lag
This setting provides the leading phase shift correction that is applied to the phaser calculations to compensate the angle error provided by the sensor.
NOTE
NOTE: This setting is only available when current the current source is the Rogowski coil.
BUS SELECTION
Range: Bus 1, NoneDefault: Bus 1
Enter the location of the actual feeder with the associated Bus number, if applicable. This setting is used to sum the total power flowing from the Bus for metering. If a current source is not associated with either of the Bus, select None.
NOTE
NOTE: Refer to the application examples in the Appendix for more details.
VOLTAGE SOURCE SELECTION
Range: None, Voltage Source 1Default: Voltage Source 1
Enter the location of the voltage source associated with this current source bank in order to calculate the power and energy of the feeder.
Bus setupPATH: SETPOINTS > S2 SYSTEM SETUP > BUS SETUP > BUS 1
RATED CURRENTRange: 1 to 4000 A in steps of 1 ADefault: 1000 A
Enter the rated current of the Bus. This value is used as the nominal current reference for Bus detection functions.
Voltage setupThe Voltage setup menu screen is order code dependant. PATH: SETPOINTS > S2 SYSTEM SETUP > VOLTAGE SETUP > VOLTAGE SOURCE 1 (2)
Traditional VT
For devices with the Traditional VT option selected the settings are shown below.
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LEA
For devices with the Low Voltage (LEA) option selected the settings are shown below.
NAME
Range: Up to 256 charactersDefault: Voltage Source 1
This setting gives the name of the location of the voltage source.
VT RATIO
Range: 1:1 to 1:10000 in steps of 1Default: 1:1
This setpoint specifies the voltage ratio between the primary and secondary sides.
RATED SECONDARY
Range: 60.0 to 600.0 in steps of 0.1Default: 440 V* Range: 0.5 to 10.0 in steps of 0.1* Default: 10 V
Enter the nominal voltage specified for the secondary side of the voltage transformer.
NOTE
NOTE: * This setting range is used when the voltage input is from a LEA Voltage sensor.
VT CONECTION TYPE
Range: Wye, DeltaDefault: Wye
This setting defines the type of VT (voltage source) connection Wye or Delta.
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RATED PHASE ANGLE (*)
Range: 0.0° to 359.9° in steps of 0.1°Default: 0.0° Lag
Enter the phase shift of secondary voltage related to the primary voltage. Due to the transformation algorithms used for some sensors, the secondary side keeps a shifted angle with regards to the primary voltage. The Phase Angle Shift (at nominal system frequency) information is provided in the sensor data specification sheet. Enter this information in this setting.
NOTE
NOTE: * This setting is only available when the current source is the LEA Voltage sensor.
SENSOR 1/2/3 MAGNITUDE CORRECTION
Range: 0.500 to 1.500 in steps of 0.001Default: 1.000
The DGCM uses magnitude and phase correction factors to correct for manufacturing tolerances in the line-sensing equipment. This setting specifies the correction magnitude that must be applied for the measurement taken from the VT1/2/3 input.
The magnitude correction factor equals:
Calculated VT1/2/3 Voltage = VT1/2/3 Magnitude x Measured VT1/2/3 Voltage.
NOTE
NOTE: * This setting is only available when the current source is the LEA Voltage sensor.
SENSOR 1/2/3 PHASE ANGLE CORRECTION
Range: -15.0 to 15.0 in steps of 0.01°Default: 0.0° Lag
This setting provides the leading phase shift correction that should be applied to the phasor calculations to compensate the angle error provided by the VT sensor.
NOTE
NOTE: * The voltage setup menu is order code dependant.
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S3 Configuration
The configuration screen is shown below.
Setpoint GroupThe Setpoint group screen is shown below.PATH: SETPOINTS > S3 CONFIGURATION > S3 SETPOINT GROUP 1(3)
Current alarms The Current alarms screen is shown below. All the current protection alarm functions are applicable to the Current source 1 (6) and Bus Alarms.
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PATH: SETPOINTS > S3 CONFIGURATION > SETPOINT GROUP 1/2/3 > CURRENT ALARMS
Phase current source alarmsPATH: SETPOINTS > S3 CONFIGURATION > SETTING GROUP 1/2/3 > CURRENT SOURCE 1/2/3 ALARMS
Phase Time Overcurrent ProtectionThe settings of this function are applied to each of the three phases to produce pickup and alarm condition per phase.The TOC pickup flag is asserted when the current on any phase is above the PKP value. The TOC alarm flag is asserted if the element stays picked up for the time defined by the selected inverse curve and the magnitude of the current. The element drops from pickup without operation if the measured current drops below 97-98% of the pickup value before the time for operation is reached.PATH: SETPOINTS > S3 CONFIGURATION > SETPOINT GROUP 1 > CURRENT ALARMS > CURRENT SOURCE 1 ALARMS > PHASE TOC
The selection of the Alarm, or Latched Alarm setting enables the Phase TOC function.
When the Alarm function is selected and the phase TOC operates, the LED “ALARM” flashes, and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the phase TOC operates, the LED “ALARM” flashes during the TOC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH TOC PICKUP
Range: 0.05 to 2.5 in steps of 0.01 x CT (for Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (for Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the time overcurrent pickup level specified as a multiplier of the nominal CT current. For example, a PKP setting of 0.9 x CT with 300:5 CT translates into 270 A primary current.
PH TOC CURVE
Range: 0.05 to 20.00 in steps of 0.01Default: 1.00
This setting sets the shape of the selected TOC inverse curve. If none of the standard curve shapes is appropriate, a custom User curve, or FlexCurve can be created. Refer to the User curve and the FlexCurve setup for more detail on their configurations and usage.
PH TOC TDM
Range: 0.05 to 20.00 in steps of 0.01Default: 1.00
This setting provides selection for the Time Dial Multiplier by which the times from the inverse curve are modified. For example, if an ANSI Extremely Inverse curve is selected with TDM = 2, and the fault current was 5 times bigger than the PKP level, the operation of the element will not occur before an elapsed time from pickup of 495 ms.
PH TOC RESET TIME
The “Instantaneous” reset method is intended for applications with other relays, such as most static relays, which set the energy capacity directly to zero when the current falls below the reset threshold. The “Linear” reset method can be used where the relay must coordinate with electromechanical relays.
PH TOC BLOCK
Range: Off, Any operand from the list of FlexLogic operands, Contact inputs, Virtual inputs, Virtual outputDefault: Off
One blocking input provided in the Phase TOC menu. When the selected blocking input - Contact input, Virtual Input, Remote Input, or Logic Element - turns on, the phase TOC function will be blocked.
PH TOC EVENTS
Range: Enabled, Disabled?Default: Enabled
The selection of the Enabled setting enables the events of the Phase TOC function.
The selection of the Self-reset or Latched setting enables the targets of the Phase TOC function.
Figure 4: Phase Time Overcurrent Logic Diagram
TOC curvesDESCRIPTIONThe DGCM unit has phase and neutral time over current elements. The programming of the time current characteristics of these elements is similar for both the elements and will only be covered in this section. The required curve is established by programming a Pickup Current, Curve Shape, Curve Multiplier, and Reset Time. The Curve Shape can be either a standard shape or a user-defined shape programmed with the FlexCurve™ feature.
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94 MULTILIN DGCM – INSTRUCTION MANUAL
S3 CONFIGURATION CHAPTER 5: SETPOINTS
Accurate coordination may require changing the time overcurrent characteristics of particular elements under different conditions. The following setpoints are used to program the time-current characteristics.
• <Element_Name> PICKUP: The pickup current is the threshold current at which the time overcurrent element starts timing. There is no intentional ‘dead band’ when the current is above the pickup level. However, accuracy is only guaranteed above a 1.5 per unit pickup level. The dropout threshold is 98% of the pickup threshold. Enter the pickup current corresponding to 1 per unit on the time overcurrent curves as a multiple of the source CT. For example, if 100: 5 CTs are used and a pickup of 90 amps is required for the time overcurrent element, enter “0.9 x CT”.
• <Element_Name> CURVE: Select the desired curve shape. If none of the standard curve shapes is appropriate, a custom FlexCurve™ can be created by entering the trip times at 80 different current values; see S2 SYSTEM SETUP > FLEXCURVE A. Curve formulas are given for use with computer based coordination programs. Calculated trip time values are only valid for I / Ipu > 1. Select the appropriate curve shape and multiplier, thus matching the appropriate curve with the protection requirements. The available curves are shown in the table below.
• <Element_Name> MULTIPLIER: A multiplier setpoint allows shifting of the selected base curve in the vertical time direction. Unlike the electromechanical time dial equivalent, trip times are directly proportional to the value of the time multiplier setpoint. For example, all trip times for a multiplier of 10 are 10 times the multiplier 1 or base curve values.
When Timed Over-Current is programmed with Definite time, the operating time is obtained after multiplication of the selected Multiplier (TDM) by a 0.1 s base line. For example, selection of TDM = 5 would lead to a 0.5 s operating time.
• <Element_Name> RESET: Time overcurrent tripping time calculations are made with an internal ‘energy capacity’ memory variable. When this variable indicates that the energy capacity has reached 100%, a time overcurrent trip is generated. If less than 100% is accumulated in this variable and the current falls below the dropout threshold of 97 to 99% of the pickup value, the variable must be reduced. Two methods of this resetting operation are available, Instantaneous and Linear. The Instantaneous selection is intended for applications with other relays, such as most static units, which set the energy capacity directly to zero when the current falls below the reset threshold. The Linear selection can be used where the relay must coordinate with electromechanical units. With this setpoint, the energy capacity variable is decremented according to the following equation.
where: TRESET = reset time in seconds; E = energy capacity reached (per unit); M = curve multiplier; CR = characteristic constant (5 for ANSI, IAC, Definite Time, and FlexCurves™; 8 for IEC)TOC CURVE CHARACTERISTICSANSI Curves
ANSI GE TYPE IAC IEC OTHER
Extremely Inverse Extremely Inverse Curve A (BS142) Definite Time
Very Inverse Very Inverse Curve B (BS142) Flexcurve ATM
Normally Inverse Inverse Curve C (BS142) Flexcurve BTM
Moderately Inverse Short Inverse IEC Short Inverse User Curve
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The ANSI time overcurrent curve shapes conform to industry standards and the ANSI C37.90 curve classifications for extremely, very, normally, and moderately inverse. The ANSI curves are derived from the following formula:
where:T = trip time (seconds); M = multiplier value; I = input current; Ipu = pickup current setpoint; A, B, C, D, E = constants
Table 1: ANSI Curve ConstantsANSI Curve Shape A B C D E
IEC CurvesFor European applications, the relay offers the four standard curves defined in IEC 255-4 and British standard BS142. These are defined as IEC Curve A, IEC Curve B, IEC Curve C, and Short Inverse. The formulae for these curves are:
where: T = trip time (seconds), M = multiplier setpoint, I = input current, Ipu = pickup current setpoint, K, E = constants.
USER CurvesThe relay provides a selection of user definable curve shapes used by the time overcurrent protection. The User curve is programmed by selecting the proper parameters in the formula:
A, P, Q, B, K - selectable curve parameters within the ranges from the table: D is the Time Dial Multiplier.User Curve can be used on multiple elements only if the time dial multiplier is the same for each element.V = I/IPICKUP (TOC setting) is the ratio between the measured current and the pickup setting.
NOTE
NOTE: The maximum trip time for the User Curve is limited to 65.535 seconds. The User Curve can be used for one protection situation only.
Figure 5: USER curve configuration settings
FlexcurvesProspective FlexCurves™ can be configured from a selection of standard curves to provide the best approximate fit , then specific data points can be edited afterwards. Click the Initialize button to populate the pickup values with the points from the curve specified by the "Select Curve" setting and the "Multiply" value. These values can then be edited to create a custom curve. Click on the Clear FlexCurve Data button to reset all pickup values to zero.Curve data can be imported from CSV (comma-separated values) files by clicking on the Open button. Likewise, curve data can be saved in CSV format by clicking the Save button. CSV is a delimited data format with fields separated by the comma character and records separated by new lines. Refer to IETF RFC 4180 for additional details.
Parameters A B P Q K
Range 0 to 125 0 to 3 0 to 3 0 to 2 0 to 1.999
Step 0.0001 0.0001 0.0001 0.0001 0.001
Unit sec sec NA NA sec
Default Value 0.05 0 0.04 1.0 0
100 MULTILIN DGCM – INSTRUCTION MANUAL
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The curve shapes for the two FlexCurves are derived from the following equations.
In the above equations, Toperate represents the operate time in seconds, TDM represents the multiplier setting, I represents the input current, Ipickup represents the value of the pickup current setting, Tflex represents the FlexCurve™ time in seconds.
Figure 6: Flexcurve™ configuration settings
The following settings are available for each custom Flexcurve™.
Select CurveRange: Moderately Inverse, Very Inverse, Extremely Inverse, Normally Inverse, IEC Curve A, IEC Curve B, IEC Curve C, IEC Short Inverse, IAC Extreme Inv, IAC Very Inverse, IAC Inverse, IAC Short Inverse, User Curve, FlexCurve B (Note: For FlexCurve A, you can select FlexCurve B as the setpoint, and vice versa for FlexCurve B.)Default: Extremely Inverse
This setting specifies a curve to use as a base for a custom FlexCurve™. Must be used before Initialization is implemented (see Initialization below).
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MultiplyRange: 0.01 to 30.00 in steps of 0.01Default: 1.00
This setting provides selection for Time Dial Multiplier by which the times from the inverse curve are modified. For example if an ANSI Extremely Inverse curve is selected with TDM = 2, and the fault current was 5 times bigger than the PKP level, the operation of the element will not occur before a time elapse of 495 ms from pickup.
Initialization
Used after specifying a curve to use as a base for a custom FlexCurve™ (see Select Curve and Multiply above). When the Initialize FlexCurve button is clicked, the pickup settings will be populated with values specified by the curve selected in this setting.
1.03 × Pickup, ..., 20.00 × PickupRange: 0 to 65535 ms in steps of 1Default: 0 ms
These settings specify the time to operate at the following pickup levels 1.03 to 20.00. This data is converted into a continuous curve by linear interpolation between data points. To enter a custom FlexCurve™, enter the operate time for each selected pickup point.
NOTE
NOTE: Each FlexCurve can be configured to provide inverse time characteristic to more than one Time Overcurrent Element. However, for computation of the curve operating times, one must take into account the setting of the Time Delay Multiplier from the FlexCurve menu, and the Time Delay Multiplier setting from TOC menu. The true TDM applied to the TOC element when FlexCurve is selected is the result from the multiplication of both TDM settings. For example, for FlexCurve Multiplier = 5, and Phase TOC Multiplier = 2, the total Time Dial Multiplier will be equal to 10. To avoid confusion, it is suggested to keep the multiplier from the TOC menu equal to 1, and change only the multiplier from the selected FlexCurve. This way, one can see from the FlexCurve setup, the curve operating times as related to the multiples of pickup.
Phase high IOCThe DGCM allows multiple phase current sources, depending upon the order code. The Phase instantaneous overcurrent (IOC) element, ANSI device 50P, is available per three phase current source, which has identical characteristics for all three phases. The settings of this function are applied to each of the three phases to produce pickup and operate per phase.PATH: SETPOINTS > S3 CONFIGURATION > SETPOINT GROUP 1 (3) > CURRENT ALARMS > CURRENT SOURCE 1(3) ALARMS > PHASE HIGH IOC
The selection of the Alarm, or Latched Alarm setting enables the Phase IOC function.
When the Alarm function is selected and the phase IOC operates, the LED “ALARM” flashes, and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the phase IOC operates, the LED “ALARM” flashes during the IOC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH HI IOC PICKUP
Range: 0.05 to 2.5 in steps of 0.01 x CT (for Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (for Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the instantaneous overcurrent pickup level specified as a multiplier of the nominal CT current. For example, a PKP setting of 0.9 x CT with 300:5 CT translates into 270 A primary currents.
PH HI IOC DELAY
Range: 0.00 to 600.00 s in steps of 0.01 sDefault: 0.00 s
This setting selects the time delay used to delay the operation of the protection.
PH HI IOC BLOCK
Range: Off, Any operand from the list of FlexLogic operands, Contact inputs, Virtual inputs, Virtual outputDefault: Off
There is one blocking input provided in the Phase IOC menu. The selection of the block can include any operand from the list of FlexLogic operands, Contact inputs, Virtual Inputs and Virtual Outputs.
PH HI IOC EVENTS
Range: Enabled, Disabled?Default: Enabled
The selection of the Enabled setting enables the events of the Phase IOC function.
The selection of the Self-reset or Latched setting enables the targets of the Phase IOC function.
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Figure 7: PH IOC protection - logic diagram
Phase low IOCThe DGCM allows multiple phase current sources, depending upon the order code. The Phase low instantaneous overcurrent (IOC) element, ANSI device 50P, is available per three phase current source, which has identical characteristics for all three phases. The settings of this function are applied to each of the three phases to produce pickup and operate per phase.PATH: SETPOINTS > S3 CONFIGURATION > S3 SETTING GROUP 1/2/3 > CURRENT ALARMS > PH CURRENT SOURCE 1 ALARMS 1 > PH CURRENT SOURCE 1 ALARM 1(../6) > PH LOW IOC 1
The selection of the Alarm, or Latched Alarm setting enables the Phase IOC function.
When the Alarm function is selected and the phase IOC operates, the LED “ALARM” flashes, and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the phase IOC operates, the LED “ALARM” flashes during the IOC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH LO IOC PICKUP
Range: 0.05 to 2.5 in steps of 0.01 x CT (For Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (For Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the instantaneous overcurrent pickup level specified as a multiplier of the nominal CT current. For example, a PKP setting of 0.9 x CT with 300:5 CT translates into 270 A primary currents.
PH LO IOC DELAY
Range: 0.00 to 600.00 s in steps of 0.01 sDefault: 0.00 s
This setting selects the time delay used to delay the operation of the protection.
PH LO IOC BLOCK
Range: Off, Any operand from the list of FlexLogic operands, Contact inputs, Virtual inputs, Virtual outputDefault: Off
There is one blocking input provided in the Phase IOC menu. The selection of the block can include any operand from the list of FlexLogic operands, Contact inputs, Virtual Inputs and Virtual Outputs.
PH LO IOC EVENTS
Range: Enabled, DisabledDefault: Enabled
The selection of the Enabled setting enables the events of the Phase IOC function.
The selection of the Self-reset or Latched setting enables the targets of the Phase IOC function.
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Figure 8: PH IOC protection - logic diagram
Neutral Time Overcurrent ProtectionThe settings of this function are applied to the neutral current to produce trip or pickup flags.The Neutral TOC pickup flag is asserted when the neutral current is above the PKP value. The Neutral TOC trip flag is asserted if the element stays picked up for the time defined by the selected inverse curve and the magnitude of the current. The element drops from pickup without operation, if the measured current drops below 97-98% of the pickup value before the time for operation is reached.PATH: SETPOINTS > S3 CONFIGURATION > S3 SETTING GROUP 1/2/3 > CURRENT ALARMS > Neutral CURRENT SOURCE 1 ALARMS 1(6) > NTRL TOC 1
The selection of the Alarm, or Latched Alarm setting enables the Neutral TOC function.
When the Alarm function is selected and the Neutral TOC operates, the LED “ALARM” flashes, and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the Neutral TOC operates, the LED “ALARM” flashes during the TOC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
NTRL TOC PICKUP
Range: 0.05 to 2.5 in steps of 0.01 x CT (for Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (for Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the time overcurrent pickup level specified as a multiplier of the nominal CT current. For example, a PKP setting of 0.9 x CT with 300:5 CT translates into 270 A primary current.
NTRL TOC CURVE
This setting sets the shape of the selected TOC inverse curve. If none of the standard curve shapes is appropriate, a custom User curve, or FlexCurve can be created. Refer to the User curve and the FlexCurve setup for more detail on their configurations and usage.
PH TOC TDM
Range: 0.05 to 20.00 in steps of 0.01Default: 1.00
This setting provides selection for the Time Dial Multiplier by which the times from the inverse curve are modified. For example, if an ANSI Extremely Inverse curve is selected with TDM = 2, and the fault current was 5 times bigger than the PKP level, the operation of the element will not occur before an elapsed time from pickup of 495 ms.
NTRL TOC RESET TIME
The “Instantaneous” reset method is intended for applications with other relays, such as most static relays, which set the energy capacity directly to zero when the current falls below the reset threshold. The “Linear” reset method can be used where the relay must coordinate with electromechanical relays.
NTRL TOC BLOCK
Range: Off, Any operand from the list of FlexLogic operands, Contact inputs, Virtual inputs, Virtual outputDefault: Off
One blocking input provided in the Neutral TOC menu. When the selected blocking input - Contact input, Virtual Input, Remote Input, or Logic Element - turns on, the Neutral TOC function will be blocked.
NTRL TOC EVENTS
Range: Enabled, Disabled?Default: Enabled
The selection of the Enabled setting enables the events of the Neutral TOC function.
The selection of the Self-reset or Latched setting enables the targets of the Neutral TOC function.
Figure 9: Neutral Time Overcurrent Logic Diagram
Neutral Instantaneous Overcurrent ProtectionThe relay has one Neutral Instantaneous Overcurrent detection function per feeder. The settings of this function are applied to the calculated neutral current for pickup flag. The Neutral IOC pickup flag is asserted when the neutral current is above the PKP value. The
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Neutral IOC operate flag is asserted if the element stays picked up for the time defined by the Neutral IOC Delay setting. If the pickup time delay is set to 0.00 seconds, the pickup and operate flags will be asserted at the same time.PATH: SETPOINTS > S3 CONFIGURATION > S3 SETTING GROUP 1/2/3 > CURRENT ALARMS > Neutral CURRENT SOURCE 1 ALARMS > NTRL CURRENT SOURCE ALARMS 1(3) > NTRL IOC 1
NTRL IOC FUNCTION
The selection of the Alarm setting enables the Neutral instantaneous overcurrent function. The LED “ALARM” will flash upon Ntrl IOC operating condition, and will self-reset, when the operating condition clears.
When the Latched Alarm function is selected and the Neutral IOC operates, the LED “ALARM” flashes during the IOC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
NTRL IOC PICKUP
Range: 0.05 to 2.5 in steps of 0.01 x CT (for Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (for Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the neutral instantaneous overcurrent pickup level specified times CT.
NTRL IOC DELAY
Range: 0.00 to 600.00 s in steps of 0.01Default: 0.00
This setting provides the selection for pickup time delay which is used to delay the operation of the detection function.
NTRL IOC BLOCK
Range: Off, Contact input 1 to 10, Virtual input 1 to 32, Virtual output 1 to 32Default: Off
There is one blocking input provided in the Neutral IOC menu. The selection of the block can include Contact input, Virtual input and Virtual outputs.
NTRL IOC EVENTS
Range: Enabled, Disabled?Default: Enabled
The selection of the Enabled setting enables the events of the Neutral IOC function.
Phase undercurrentThe Phase undercurrent protection function detects the loss of one phase due to a fuse blown condition. The undercurrent protection feature can be used to generate an alarm when the current drops below a specified current setting for a specified time delay.PATH: SETPOINTS > S3 CONFIGURATION > S3 SETTING GROUP 1/2/3 > CURRENT ALARMS > PH CURRENT SOURCE ALARMS > PH CURRENT SOURCE ALARM 1(2) > PH UNDER CURRENT 1
The selection of the Alarm, or Latched Alarm setting enables the Phase UC function.
When the Alarm function is selected and the phase UC operates, the LED “ALARM” flashes, and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the phase UC operates, the LED “ALARM” flashes during the UC operating condition, and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
SETPOINTS
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CUR Src # Ntrl IOC PKP
CUR Src #Ntrl IOC DPO
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110 MULTILIN DGCM – INSTRUCTION MANUAL
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PH UC PKP
Range: 0.05 to 2.5 in steps of 0.01 x CT (for Traditional input and Bus)Range: 0.05 to 1.5 in steps of 0.01 x CT (for Rogowski Coil/Sensor)Default: 1.00 x CT
This setting sets the undercurrent pickup level times CT. For example, a PKP setting of 0.9 x CT with 300:5 CT translates into 270 A primary current.
PH UC DELAY
Range: 0.0 to 600.0 s in steps of 0.1 sDefault: 5.0 s
This setting selects the time delay used to delay the operation of the protection.
PH UC BLOCK
Range: Off, Contact input 1 to 8, Virtual input 1 to 32, Virtual output 1 to 32Default: Off
There is one blocking input provided in the Phase UC menu. The selection of the block can include Contact inputs, Virtual inputs and Virtual outputs.
PH UC EVENTS
Range: Enabled, DisabledDefault: Enabled
The selection of the Enabled setting enables the events of the Phase UC function.
The selection of the Self-reset or Latched setting enables the targets of the UC function.
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Figure 11: PH UC protection - logic diagram
Voltage alarms The voltage alarms screen is shown below.
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PATH: SETPOINTS > S3 CONFIGURATION > S3 SETPOINT GROUP 1/2/3 > VOLTAGE ALARMS
Phase overvoltageThe Phase OV protection can be used to protect voltage sensitive feeder loads and circuits against sustained overvoltage conditions. The protection element can be used to generate an alarm when the voltage exceeds the selected voltage level for the specified time delay.PATH: SETPOINTS > S3 CONFIGURATION > SETPOINT GROUP 1/2/3 > VOLTAGE ALARMS > PHASE VOLTAGE SOURCE 1 ALARMS > PHASE OVER VOLTAGE 1
The selection of Alarm, or Latched Alarm setting enables the Phase instantaneous overcurrent function.
When the Alarm function is selected and the Phase OV operates, the LED “ALARM” flashes and self-resets when the operating conditions are cleared.
When the Latched Alarm function is selected and the Phase OV operates, the LED “ALARM” flashes during the Phase OV operating condition and is steady lit after the conditions are cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH OV PKP
Range: 0.05 to 1.25 x VT in steps of 0.01Default: 1.25 x VT
This setting defines the Phase OV pickup level, and is usually set to a level above which some voltage sensitive loads and feeder components may experience over-excitation and dangerous overheating conditions.
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PH OV DELAY
Range: 0.0 to 600.0 s in steps of 0.1Default: 1.0 s
This setting specifies the time delay before OV operation.
PH OV PHASES
Range: Any One, All ThreeDefault: Any One
This setting selects the combination of overvoltage conditions with respect to the number of the phase voltages to the overvoltage pickup setting.
PH OV BLOCK
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Virtual Output 1 to 32Default: Off
There is one blocking input provided in the Phase Overvoltage menu. The selection of the block can include Contact Inputs, Virtual Inputs, and Virtual Outputs.
PH OV EVENTS
Range: Enabled, DisabledDefault: Enabled
The selection of the Enabled setting enables the events of the Phase OV function.
The selection of the Self-reset or Latched setting enables the targets of the Phase OV function.
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Figure 12: Phase Overvoltage logic diagram
Phase undervoltageFor voltage sensitive loads, such as induction motors, a drop in voltage will result in an increase in the drawn current, which may cause dangerous overheating in the motor. The undervoltage (UV) protection feature can be used to generate an alarm when the voltage drops below a specified voltage setting for a specified time delay.PATH: SETPOINTS > S3 CONFIGURATION > SETPOINT GROUP 1 /2/3 > VOLTAGE ALARMS > PHASE VOLTAGE SOURCE 1 ALARMS > PHASE UNDERVOLTAGE 1
The selection of the Alarm, or Latched Alarm setting enables the phase UV function.
When the Alarm function is selected and the phase UV operates, the LED “ALARM” flashes and self-resets when the operating condition is cleared.
When the Latched Alarm function is selected and the phase UV operates, the LED “ALARM” flashes during the phase UV operating condition and is steady lit after the condition is cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH UV PKP
Range: 0.05 to 1.25 x VT in steps of 0.01Default: 0.75 x VT
This setting defines the phase UV pickup level, and it is usually set to a level, below which the drawn current from voltage sensitive loads, such as induction motors may cause dangerous motor overheating conditions.
PH UV PHASES
Range: Any One, All ThreeDefault: Any One
This setting selects the combination of under voltage conditions with respect to the number of phase voltages under the under voltage pickup setting. Selection of the “All Three” setting would effectively rule out the case of single VT fuse failure.
PH UV DELAY
Range: 0.0 to 600.0 s in steps of 0.1Default: 1.0 s
This setting specifies a time delay, used by the selected PHASE UV CURVE type of timing to calculate time before UV operation.
PH UV MIN VOLTAGE
Range: 0.00 to 1.25 x VT in steps of 0.01Default: 0.30 X VT
The minimum operating voltage level is programmable to prevent undesired UV operation before the voltage becomes available.
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PH UV BLOCK
Range: Off, Contact Input 1 to 8, Virtual Input1 to 32, Virtual Output 1 to 32Default: Off
There is one blocking input provided in the phase undervoltage menu. The selection of the block can include Contact Inputs, Virtual Inputs and Virtual Outputs.
PH UV EVENTS
Range: Enabled, DisabledDefault: Enabled
The selection of the Enabled setting enables the events of the phase UV function.
The selection of the Self-reset or Latched setting enables the targets of the UV function.
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MULTILIN DGCM – INSTRUCTION MANUAL 117
Figure 13: Phase Undervoltage - logic diagram
Voltage lossFor voltage sensitive loads, such as induction motors, a drop in voltage results in an increase in the drawn current, which may cause dangerous overheating in the motor. The phase loss protection feature can be used to generate an alarm when the voltage drops below a specified voltage setting for a specified time delay.PATH: SETPOINTS > S3 CONFIGURATION > SETTING GROUP 1/2/3 > VOLTAGE ALARMS > PH VOLTAGE SOURCE 1 ALARMS > PH VOLTAGE SOURCE ALARM 1(2) > PH LOSS
The selection of the Alarm, or Latched Alarm setting enables the Phase Loss function.
When the Alarm function is selected and the Power Loss operates, the LED “ALARM” flashes and self-resets when the operating condition is cleared.
When the Latched Alarm function is selected and the Power Loss operates, the LED “ALARM” flashes during the power loss operating condition and is steady lit after the condition is cleared. The LED “ALARM” can be cleared by issuing a reset command.
When the Configurable function is selected, the ALARM LEDs will not turn on automatically. They must be configured using their own menus and flexlogic operands.
PH LOSS PKP
Range: 0.05 to 1.25 x VT in steps of 0.01 x VTDefault: 0.80 x VT
This setting defines the phase UV pickup level, and it is usually set to a level, below which the drawn current from voltage sensitive loads, such as induction motors may cause dangerous motor overheating conditions.
PH LOSS DELAY
Range: 0.0 to 600.0 s in steps of 0.1Default: 2.0 s
This setting specifies the time delay the phase voltage has to be below the threshold to detect a phase loss condition.
PH LOSS BLOCK
Range: Off, Contact Input 1 to 8, Virtual Input 1 to 32, Virtual Output 1 to 32Default: Off
There is one blocking input provided in the Phase Loss menu. The selection of blocking inputs/outputs can include Contact Inputs, Virtual Inputs and Virtual Outputs.
PH LOSS EVENTS
Range: Enabled, DisabledDefault: Enabled
The selection of the Enabled setting enables the events of the Phase Loss function.
The selection of the Self-Reset or Latched setting enables the targets of the Phase Loss function.
CHAPTER 5: SETPOINTS S3 CONFIGURATION
MULTILIN DGCM – INSTRUCTION MANUAL 119
Figure 14: Phase Loss - logic diagram
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S4 Controls
Change setpoint groupThe Multilin DGCM has three identical settings groups - Groups 1, 2, and 3 - for all DGCM protection elements. Switching between these three groups is available either automatically by assigning an input (contact, virtual, remote, flexlogic element), or manually through communications.Group 1 is the default setting group. The device can automatically switch from Group 1 DGCM protection elements to the other group elements, and vice versa, by setting up the switching conditions under “Change Setpoint Group”. Under some application conditions, it may be undesirable to change settings groups. In such cases, the user can set a condition under “BLOCK GROUP CHANGE”, where if asserted, the active settings group will stay active, even if the input configured to switch to the other settings group is asserted.For example, if the active group was Group 1 and the input configured under “BLK GROUP CHANGE” is asserted, the relay will maintain settings Group 1, even if the input “SET GROUP 2 (3) ACTIVE” is asserted. Alternatively, if the “BLK GROUP CHANGE” input is asserted, the relay will not switch from Group 2/3 to Group 1, even if the input under “SET GROUP 2 (3) ACTIVE” is de-asserted.The device will default to settings Group 1, if both the input “SET GROUP 2 (3) ACTIVE” and the blocking input “BLK GROUP CHANGE” are de-asserted. Set Group 3 of settings has a higher priority than the rest of the setting groups. That means, if both “SET GROUP 2 ACTIVE” and “SET GROUP 3 ACTIVE” signals are maintained asserted at the same time, the Multilin DGCM will change to the Set Group 3 of settings. The logic functionality takes into account this feature.PATH: SETPOINTS > S4 CONTROLS > CHANGE SETPOINTS GROUP
SET GROUP 2 ACTIVE
Range: Off, Contact Input 1 to 32 (Order Code dependent), Virtual Input 1 to 32, Virtual Output 1 to 32, Contact Output 1 to 16Default: Off
This setting selects an input, used to change to Setpoint Group 2, when asserted. If no group change supervision is selected, the Setpoint Group 2 will stay active as long as the “SET GROUP 2 ACTIVE” input is asserted, and will revert to group 1, when this input is de-asserted
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SET GROUP 3 ACTIVE
Range: Off, Contact Input 1 to 32 (Order Code dependent), Virtual Input 1 to 32, Virtual Output 1 to 32, Contact Output 1 to 16Default: Off
This setting selects an input, used to change to Setpoint Group 3, when asserted. If no group change supervision is selected, the Setpoint Group 3 will stay active as long as the “SET GROUP 3 ACTIVE” input is asserted, and will revert to the default group, when this input is de-asserted
BLOCK GROUP CHANGE
Range: Off, Contact Input 1 to 32 (Order Code dependent), Virtual Input 1 to 32, Virtual Output 1 to 32, Contact Output 1 to 16Default: Off
This setting defines an input that can be used to block changing settings groups. When the assigned input is asserted, changing from one settings group to the other one is blocked.
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Figure 15: Changing Settings groups – logic diagram
Virtual input commandsThere are 32 Virtual Inputs that can be individually programmed to respond to Input commands entered via the relay keypad, or by using communication protocols. PATH: SETPOINTS > S4 CONTROLS > VIRTUAL INPUT COMMANDS
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VIRTUAL INPUT 1 to 32Range: Off, OnDefault: Off
The state of each virtual input can be controlled under SETPOINTS > S4 CONTROLS > VIRTUAL INPUT COMMANDS menu. Entering OFF or On in the selected menu window will change the input’s state.
NOTE
NOTE: See also the Virtual inputs section under S5 Inputs/Outputs.
S5 Inputs and Outputs
The Inputs/Outputs screen is shown below.
Contact inputsThe Multilin DGCM relay can be equipped with up to 4 digital input output (DIO) cards, selectable by the order code. Each DIO card provides 16 contact inputs numbered from 1 to 16. All contact inputs are available with a debounce time selection and a delay input time.
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S5 INPUTS AND OUTPUTS CHAPTER 5: SETPOINTS
Changing the state of all inputs will be inhibited, if the relay is in “Not Ready” mode. The digital contact input is activated when the voltage applied to the input is higher than the threshold level. Refer to the Specifications in Chapter 1 for more details.PATH: SETPOINTS > S5 INPUTS/OUTPUTS > CONTACT INPUT
CI DEBOUNCE TIME
Range: 10 to 100 in steps of 5 msDefault: 15 ms
This setting defines the debounce time set for inputs. The debounce time is the time window for filtering an input. If an input sustains a change of level that lasts less than this set time, the change will not be considered. This setting is applied to all contact inputs.
CONTACT INPUT 1 (..64) NAME
Default: Input 1 to 64
The input name assigned to the contact input.
DELAY INPUT 1 (..64) TIME
Range: 0 to 100 in steps of 5 msDefault: 0 ms
This setting specifies the time required by the contact input so it will be energized to detect the change of the state of the input. The delay setting is used in slow switchgear applications.
Settings, the debounce time and the delay input time are applied during energization and during energization of the input.
It is important to distinguish between the delay time setting and the debounce time used for filtering undesired transients in the input signal.
Figure 16: Logic Implementation for each Digital Input
Contact OutputsThe Multilin DGCM can be equipped with up to 4 digital input output (DIO) cards, selectable by the order code. Each DIO card provides 8 contact outputs relays numbered from 1 to 8. All these relays are available for selection to energize on either pickup or operate flags generated by the protection, control, or maintenance feature.
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Each relay can be selected as either Self-Reset, or Latched. If the Self-Reset type is selected, the contact output will be energized as long as the element is in operating mode, and will reset when the element drops out. If the Latched type is selected, the contact output will stay energized, after element dropout, and will be de-energized upon the reset command. Each relay also can be selected either Failsafe or Non-Failsafe. In Failsafe mode the contact is energized. Changing the state of all relays will be inhibited, if the relay is in “Not Ready” mode.PATH: SETPOINTS > S5 INPUTS/OUTPUTS > CONTACT OUTPUT
CONTACT OUTPUT 1(32) NAME
Default: Relay 1 to 32
The relay name given to the contact output.
CONTACT OUTPUT 1(32) FUNCTION
Range: Off, Contact Inputs 1 to X, Virtual Input 1 to 32, Virtual Output 1 to 32, Any control elementDefault: Off
This setting defines the logic element assigned to the contact output. When the selected input is asserted, the contact output will be closed.
CONTACT OUTPUT 1(32) SEAL-IN TIME
Range: 0.00 to 9.99s in steps of 0.01sDefault: 0.50s
This setting specifies the minimum time the contact output will be energized. The seal-in timer starts its count as soon as the contact output is energized. The contact output relay is energized until the expiration of the seal-in timer or the time the closing input element stays activated, whichever is longer.
CONTACT OUTPUT 1(32) TYPE
Range: Self-Reset, LatchedDefault: Self-Reset
This setting defines the behaviour of the contact output.
If Self-Reset is selected, the contact output will remain activated until the seal-in timer has expired or until the closing input element has been deactivated. See the ‘Contact Output # Seal-In Time’ setting for further information. If Latched is selected, the contact output will keep energized until a reset command has been received.
This setting specifies if the behaviour of the contact output has to be normally closed (Failsafe) or normally Open (Non-Failsafe mode).
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NOTE
NOTE: From a hardware point of view, all contact outputs of the I/O card are Normally Open. That means that after a power loss or if the relay is not in READY state, the Output contact will be opened regardless of this setting.
BLOCK CLOSE CONTACT OUTPUT 1(32)
Range: Off, Any input from the list of inputsDefault: Off
This setting defines a block to the close of the contact output. When the selected input is asserted, the contact output will be blocked.
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Figure 17: Contact Output – logic diagram
Virtual inputsThere are 32 Virtual Inputs that can be individually programmed to respond to Input commands entered via the relay keypad, or by using communication protocols. Virtual Input programming begins with enabling the Virtual Input function and selecting the Virtual Input Type - Self-Reset or Latched - under SETTINGS > S5 INPUTS/OUTPUTS.
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128 MULTILIN DGCM – INSTRUCTION MANUAL
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Next, under SETTINGS > S4 CONTROLS > S4 VIRTUAL INPUTS, the user assigns either an On or an Off command to the Virtual Input enabled earlier.Referring to the Virtual Inputs logic diagram below, a Virtual Input type can be selected to be either Self-Reset, or Latched. When Self-Reset is selected, and the command On is executed, the virtual input is evaluated as a pulse at rate of one protection pass. When the Latched type is selected, the On state of the Virtual Input will be latched. PATH: SETTINGS > S5 INPUTS/OUTPUTS > VIRTUAL INPUTS
VI x NAME
Range: 18 CharactersDefault: Virtual IN x
This setting defines a programmable name for the Virtual Input.
VI x FUNCTION
Range: Disabled/EnabledDefault: Disabled
The Virtual Input is enabled and ready to be triggered when set to Enabled.
VI x TYPE
Range: Self-Reset, LatchedDefault: Self-reset
When the Self-Reset type is selected, the Virtual Input will be evaluated for one protection pass only, upon “On” initiation and it will reset. When the Latched type is selected, the virtual input will keep the state “On” until reset command “Off” is initiated.
NOTE
NOTE: See also the Virtual Inputs section under S4 CONTROLS, on how to trigger a virtual input signal state.
CHAPTER 5: SETPOINTS FLEXLOGIC™
MULTILIN DGCM – INSTRUCTION MANUAL 129
Figure 18: Virtual Inputs Scheme - logic diagram
FlexLogic™
The DGCM FlexLogic™ system, defines operators, and lists of operands. In essence, all the necessary information for custom built logic. The FlexLogic tool is accessible from the EnerVista DGCM Setup program under the SETTINGS/ FLEXLOGIC menuAll DGCM digital signal states are represented by FlexLogic™ operands. Each operand is in one of two states: on (asserted, logic 1, or set), or off (de-asserted, logic 0, or reset). There is a FlexLogic™ operand for each contact input, contact output, communications command, control panel command, element trip, and element alarm, as well as many others.A list of FlexLogic™ operands and operators are sequentially processed once every 4.17 ms or 5 ms, depending on the power system frequency (60 Hz or 50 Hz). When list processing encounters an operand, the value of that operand is placed in a first in - first out stack. When list processing encounters a calculation operator, the number of values required for the calculation are removed from the stack, and the result of the operation is placed back on the stack. The operators are logic gates (for example, AND, OR, NOT), timers, latches, one-shots, and assignments. Assignment operators assign the value calculated by the preceding operators to a special class of operands called virtual outputs. Like any other operand, a virtual output can be used as an input to any operator –feedback to achieve seal-in is allowed. When list processing encounters an end operator, processing is stopped until the next processing cycle, at which time it restarts at the top of the list.Each contact output has a setting to specify the operand that drives the output. Any operand may be selected – selection of a virtual output is the means by which FlexLogic™ directly controls external equipment such as the motor contractors.The operators used in FlexLogic™ conform to the following rules:
• 1024 lines for building logic are available in the FlexLogic tool. All lines are executed every 1 / 4 power system cycle (4.17 ms or 5 ms).
• A virtual output may only be assigned once within the FlexLogic environment. An unassigned virtual output will have a value of off.
The operators available in FlexLogic™ are shown below:
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FlexLogic™ operandsThe FlexLogic™ operands available in the DGCM are listed below.
Input/Output Operands:VI1 (VI1 to VO32) On .................................Asserted when the respective Virtual Input is activated.VI1 (VI2 to VI32) Off ...................................Asserted when the respective Virtual Input is deactivated.VO1 (VO2 to VO32) On .............................Asserted when the respective Virtual Output is activated.VO1Off to VO32 Off...................................Asserted when the respective Virtual Output is deactivated.
Alarm Operands:Current Source (1 to 6) Any Phase TOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase TOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase TOC DPOActivates when any Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) TOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) TOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) TOC DPOActivates when any Alarm Operand is asserted.Bus 1 any phase TOC PKP......................Activates when any Alarm Operand is asserted.Bus 1 any phase TOC OP........................Activates when any Alarm Operand is asserted.Bus 1 any phase TOC DPO ....................Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) TOC PKP .....Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) TOC OP .......Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) TOC DPO....Activates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase High IOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase High IOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase High IOC DPOActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) High IOC PKPActivates when Alarm Operand is asserted.
Operator Inputs Description
<operand> none The output value is the value of the named <operand>.
NOT 1 The output value is “on” if and only if any of the input values are “off”.
OR 2 to 16 The output value is “on” if and only if any of the input values are “on”.
AND 2 to 16 The output value is “on” if and only if all of the input values are “on”.
NOR 2 to 16 The output value is “on” if and only if all of the input values are “off”.
NAND 2 to 16 The output value is “on” if and only if any of the input values are “off”.
XOR 2 The output value is “on” if and only if one input value is “on” and the other input value is “off”.
TIMER 1 The output value is “on” if the input value has been “on” for the set pickup time. Once the output value is “on”, it remains “on” until the input value has been “off” for the set dropout time.
LATCH 2 The output value is the state of a reset-dominant volatile bi-stable latch, where the first input value is the set input, and the second input value is the reset input.
Positive-one-shot 1 The output value is “on” for one processing cycle following an off-to-on transition of the input value.
Negative-one-shot 1 The output value is “on” for one processing cycle following an on-to-off transition of the input value.
Dual-one-shot 1 The output value is “on” for one processing cycle following either an on-to-off or off-to-on transition of the input value.
ASSIGN <operand> 1 The input value is assigned to the named operand. There is otherwise no output value.
END none The first END encountered terminates the current processing cycle.
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Current Source (1 to 6) Phase (A or B or C) High IOC OPActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) High IOC DPOActivates when Alarm Operand is asserted.Bus 1 any phase High IOC PKP............Activates when any Alarm Operand is asserted.Bus 1 any phase High IOC OP..............Activates when any Alarm Operand is asserted.Bus 1 any phase High IOC DPO...........Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) High IOC PKPActivates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) High IOC OPActivates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) High IOC DPOActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase Low IOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase Low IOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase Low IOC DPOActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) Low IOC PKPActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) Low IOC OPActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) Low IOC DPOActivates when Alarm Operand is asserted.Bus 1 any phase Low IOC PKP.............Activates when any Alarm Operand is asserted.Bus 1 any phase Low IOC OP ...............Activates when any Alarm Operand is asserted.Bus 1 any phase Low IOC DPO............Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) Low IOC PKPActivates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) Low IOC OPActivates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) Low IOC DPOActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral IOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral IOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral IOC DPOActivates when Alarm Operand is asserted.Bus 1 Neutral IOC PKP .............................Activates when any Alarm Operand is asserted.Bus 1 Neutral IOC OP ...............................Activates when any Alarm Operand is asserted.Bus 1 Neutral IOC DPO............................Activates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase UC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase UC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Any Phase UC DPOActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) UC PKPActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) UC OPActivates when Alarm Operand is asserted.Current Source (1 to 6) Phase (A or B or C) UC DPOActivates when Alarm Operand is asserted.Bus 1 any phase UC PKP ........................Activates when any Alarm Operand is asserted.Bus 1 any phase UC OP ..........................Activates when any Alarm Operand is asserted.Bus 1 any phase UC DPO.......................Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) UC PKP........Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) UC OP..........Activates when any Alarm Operand is asserted.Bus 1 Phase (A or B or C) UC DPO.......Activates when any Alarm Operand is asserted.Voltage Source 1 Any Phase OV PKP Activates when any Alarm Operand is asserted.Voltage Source 1 Any Phase OV OP ..Activates when any Alarm Operand is asserted.Voltage Source 1 Any Phase OV DPOActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) OV PKPActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) OV OPActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) OV DPOActivates when any Alarm Operand is asserted.Voltage Source 1 Any UV PKP ..............Activates when any Alarm Operand is asserted.Voltage Source 1 Any UV OP ................Activates when any Alarm Operand is asserted.Voltage Source 1 Any UV DPO.............Activates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) UV PKPActivates when any Alarm Operand is asserted.
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Voltage Source 1 Phase (A or B or C) UV OPActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) UV DPOActivates when any Alarm Operand is asserted.Voltage Source 1 Any Phase Loss PKPActivates when any Alarm Operand is asserted.Voltage Source 1 Any Phase Loss OPActivates when any Alarm Operand is asserted.Voltage Source 1 Any Phase Loss DPOActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) Loss PKPActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) Loss OPActivates when any Alarm Operand is asserted.Voltage Source 1 Phase (A or B or C) Loss DPOActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral TOC PKPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral TOC OPActivates when any Alarm Operand is asserted.Current Source (1 to 6) Neutral TOC DPOActivates when Alarm Operand is asserted.Bus 1 Neutral TOC PKP............................Activates when any Alarm Operand is asserted.Bus 1 Neutral TOC OP ..............................Activates when any Alarm Operand is asserted.Bus 1 Neutral TOC DPO...........................Activates when any Alarm Operand is asserted.Any Alarm PKP ............................................Activates when any Alarm Operand is asserted.Any Alarm OP...............................................Activates when any Alarm Operand is asserted.Any Alarm DPO ...........................................Activates when any Alarm Operand is asserted.Not Config Alarm PKP..............................Activates when any Alarm Operand is asserted.Not Config Alarm OP................................Activates when any Alarm Operand is asserted.Not Config Alarm DPO ............................Activates when any Alarm Operand is asserted.Internal Fault Alarm PKP ........................Activates when any Alarm Operand is asserted.Internal Fault Alarm OP ..........................Activates when any Alarm Operand is asserted.Internal Fault Alarm DPO.......................Activates when any Alarm Operand is asserted.Comm Fail Alarm PKP..............................Activates when any Alarm Operand is asserted.Comm Fail Alarm OP ................................Activates when any Alarm Operand is asserted.Comm Fail Alarm DPO.............................Activates when any Alarm Operand is asserted.G1 Active OP ................................................Activates when any Alarm Operand is asserted.G2 Active OP ................................................Activates when any Alarm Operand is asserted.G3 Active OP ................................................Activates when any Alarm Operand is asserted.Dummy CB OP.............................................Activates when any Alarm Operand is asserted.
Block and Inhibit Operands:Current Source (1 to 6) TOC Block OPActivated when the block operates or drops out.Bus 1 TOC Block OP ..................................Activated when the block operates or drops out.Current Source (1 to 6) High IOC Block OPActivated when the block operates or drops out.Current Source (1 to 6) High IOC Block DPOActivated when the block operates or drops out.Bus 1 High IOC Block OP ........................Activated when the block operates or drops out.Current Source (1 to 6) Low IOC Block OPActivated when the block operates or drops out.Bus 1 Low IOC Block OP..........................Activated when the block operates or drops out.Current Source (1 to 6) Neutral IOC Block OPActivated when the block operates or drops out.Current Source (1 to 6) Neutral IOC Block DPOActivated when the block operates or drops out.Bus 1 Neutral IOC Block OP...................Activated when the block operates or drops out.Current Source (1 to 6) Any Phase Block OPActivated when the block operates or drops out.Current Source (1 to 6) Any Phase Block DPOActivated when the block operates or drops out.Bus 1 Any Phase Block OP.....................Activated when the block operates or drops out.Voltage Source Any Phase OV Block OPActivated when the block operates or drops out.Voltage Source Any Phase UV Block OPActivated when the block operates or drops out.Voltage Source Any Phase Loss Block OPActivated when the block operates or drops out.Current Source (1 to 6) Neutral TOC Block OPActivated when the block operates or drops out.
CHAPTER 5: SETPOINTS FLEXLOGIC™
MULTILIN DGCM – INSTRUCTION MANUAL 133
Bus 1 Neutral TOC Block OP..................Activated when the block operates or drops out.Any Block OP ................................................Activated when the block operates or drops out.G Change Block OP ...................................Activated when the block operates or drops out.Selftest Block OP ........................................Activated when the block operates or drops out.
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FLEXLOGIC™ CHAPTER 5: SETPOINTS
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Multilin DGCM Field RTU
Chapter 6: Commands
Commands
PATH: MAIN MENU > COMMANDS
CLEAR ENERGY
Range: No, YesDefault: No
This command is used to clear all the energy values.
RESET POSITIVE REAL ENERGY
Range: No, YesDefault: No
This command is used to RESET the value for Positive Real Energy.
RESET NEGATIVE REAL ENERGY
Range: No, YesDefault: Disabled
This command is used to RESET the value for Negative Real Energy.
RESET POSITIVE REACTIVE ENERGY
Range: No, YesDefault: Disabled
This command is used to RESET the value for Positive Reactive Energy.
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CHAPTER 6: COMMANDS
RESET NEGATIVE REACTIVE ENERGY
Range: No, YesDefault: Disabled
This command is used to RESET the value for Negative Reactive Energy.
CLEAR POWER QUANTITY STATISTICS
Range: No, YesDefault: No
This command is used to clear the power quantity statistics values.
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Multilin DGCM Field RTU
Chapter 7: Maintenance
Maintenance
The DGCM allows you to monitor the device for detailed product information, it’s operating temperature, and collected operational data.
Figure 1: Maintenance Menu
M1 Product information
The product information table provides information such as the DGCM name, order code, firmware revision, boot code, serial number, etc. This is the place where one verifies whether updates have been performed correctly on the device
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M1 PRODUCT INFORMATION CHAPTER 7: MAINTENANCE
PATH: MAINTENANCE > M1 RELAY INFO
PRODUCT NAME
Range: alpha-numeric name of up to 18 characters Default: Motor Name
ORDER CODEDGCM-AEHSSCPXXXX
This screen shows a DGCM Order Code.
FIRMWARE REVISION1.10
This screen shows the relay Main Firmware Revision.
BUILD DATEAug 16 2010
This screen shows the relay Main Firmware Build Date.
BUILD TIME16:32:38
This screen shows the relay Main Firmware Build Time.
BOOT REVISION1.20
This screen shows the relay Boot Code Revision.
BOOT CODE DATEDec 11 2013
This screen shows the relay Boot Code Build Date.
BOOT CODE TIME10:44:54
This screen shows the relay Boot Code Build Time.
SERIAL NUMBERML0A08M00133
Each relay has a unique serial number.
DSP VERSION1.01
This screen shows the relay DSP Version.
DSP DATEJun 4 2013
This screen shows the relay DSP Date.
DSP TIME12:57:22
This screen shows the relay DSP Time.
CHAPTER 7: MAINTENANCE M2 PRODUCT MAINTENANCE
MULTILIN DGCM – INSTRUCTION MANUAL 139
M2 Product maintenance
PATH: MAINTENANCE > M2 PRODUCT MAINTENANCE
INTERNAL TEMP57.0°C 134.6°F
This screen displays the actual temperature inside the DGCM.
Modbus Analyzer
PATH: MAINTENANCE > MODBUS ANALYZER
UPDATE FIRMWARE
This screen displays the status of the request for a firmware update inside the DGCM.
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MODBUS ANALYZER CHAPTER 7: MAINTENANCE
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Multilin DGCM Field RTU
Chapter 8: Applications
Applications
This section provides various application examples for setting up the DGCM Field RTU device.
System Configuration Examples
The DGCM is designed to provide a great amount of flexibility for system configuration. This section provides application examples of some important system configurations with their corresponding settings.
Example 1The figure below illustrates a typical distribution transformer substation. The substation has an 800 KVA, 11 KV/240 V transformer feeding six outgoing feeders through a 3000 A distribution bus. Refer to the Typical Wiring Diagram figure (see the Electrical installation section) in this manual, for connecting conventional CT/VTs with the DGCM device.
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SYSTEM CONFIGURATION EXAMPLES CHAPTER 8: APPLICATIONS
Figure 1: System layout for Example 1
For this 6-feeder example, the selected DGCM v2.0 device’s ORDER CODE is DGCM-AEHSSACCXXXX. This order code allows for one voltage input with a traditional VT input, two current input cards (with a total of 18 traditional CTs, i.e., six 3-phase CTs at input).The traditional 500/1 CTs can be configured at the following PATH: S2 SYSTEM SETUP > CURRENT SETUP (see below) with an example of Feeder 1 CT configuration using Current Source 1. Similarly, all 6 feeders’ CTs can be configured using Current Source 1 through 6 by enabling all the current source configurations. The feeder bus is configured as Bus 1.
CHAPTER 8: APPLICATIONS SYSTEM CONFIGURATION EXAMPLES
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The Voltage Source used in the setup needs to be configured at the following PATH: S2 SYSTEM SETUP > VOLTAGE SETUP. The VT used in this application has a ratio of 1 with secondary rated voltage 240 volts. This Voltage Source 1 is already configured at Bus 1 in the Current Source Setup screen.
Figure 3: Voltage Setup screen
The next step is the Bus setup. The rated bus current, which is 3000 A in this example, needs to be configured at following path PATH: S2 SYSTEM SETUP > BUS SETUP. This value is considered as the base value for the bus protection alarm element.
Figure 4: Bus Setup screen
Example 2The figure below illustrates a typical distribution transformer substation. The substation has a 15 MVA, 33 kV/11 kV transformer feeding three outgoing feeders through a 1000 A distribution bus. Rogowski coil current sensors at each of the six feeders and a LEA (Low Energy Analog) Voltage sensor at the bus are installed for the measurement of individual feeder currents and bus voltage. In addition, the digital I/Os are included in this application to obtain status and control of the breakers. Refer to the Typical Wiring diagram (see the Electrical installation section) in this manual for connecting the Rogowski coil, LEA sensor, and digital I/Os to the DGCM device.
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Figure 5: System layout for Example 2
For this 3-feeder example, the selected DGCM v2.0 device’s ORDER CODE is DGCM-BEHSSAFXPXXX. This order code allows for one low voltage input card, one current input card with Rogowski coil current sensors, and one digital I/O card (16 digital inputs and 8 digital outputs).The Rogowski coils can be configured at the following PATH: S2 SYSTEM SETUP > CURRENT SETUP (see below). The Current setup screen shown below is an example of the Feeder 1 coil sensor configuration using Current Source 1. Similarly, all 3 feeder coils can be configured using Current Source 1 through 3 by enabling all the current source configurations.The rated primary current of the Rogowski coil needs to be configured. The conversion factor to obtain the output voltage at secondary is already considered in this product for Multilin’s Rogowski coil. The Sensor Phase Shift setting is a design parameter that should be obtained from the Data Specification Sheet of the coil. This parameter is applied to all 3-phase Rogowski coil, which is set to 0.5° in this example. The other two settings are for an individual phase Rogowski coil. Magnitude and phase correction factors are based on the calibration of each individual coil and these values are provided on the sticker placed on the coil. Sensor number 1 through 3 is applied to the 3-phase current sensor sequence wired to the DGCM device.The feeder bus is configured as Bus 1 and the voltage source connected to this bus is configured as Voltage Source 1 (which is configured in the next step).
Feeder 1 Feeder 2 Feeder 3
DY 11
15 MVA
33 kV/ 11 kV
Bus 1,
I = 1000A
250/1
CB1
To Digital
I/Os
Rogowaski
Coil Sensor
coil (1/2/3)
Rogowaski
Coil Sensor
coil (1/2/3)
Rogowaski
Coil Sensor
coil (1/2/3)
LEA Voltage
Sensor(1/2/3)
250/1
250/1
CHAPTER 8: APPLICATIONS SYSTEM CONFIGURATION EXAMPLES
MULTILIN DGCM – INSTRUCTION MANUAL 145
Figure 6: Currents Setup screen
The LEA (Low Energy Analog) voltage sensor is used to measure 110 V bus voltage. The configuration of the LEA voltage input into the DGCM can be configured in the voltage setup screen. The VT ratio and rated secondary values need to be configured for the LEA. In this example, the voltage divider ratio (obtained from the sensor data sheet) of the sensor is 1400:1 and the rated secondary voltage is 7.8 V (i.e., 11 kV/1400). In addition, the phase angle value can be set from the Data Specification sheet, if provided by the manufacturer. In addition, the magnitude and phase correction values can be set and applied either from the Data Specification sheet or the LEA sensor, if provided on the sensor by the manufacturer.
NOTE
NOTE: The allowable voltage sensor range is from 0 V to 10 V, and maximum up to 15 V.
PATH: S2 SYSTEM SETUP > VOLTAGE SETUP
Figure 7: Voltage Setup screen
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SYSTEM CONFIGURATION EXAMPLES CHAPTER 8: APPLICATIONS
The next step is the Bus setup. The rated bus current, which is 1000 A in this example, needs to be configured at following PATH: S2 SYSTEM SETUP > BUS SETUP (see below). This value is considered as the base value for the bus protection alarm element.
Figure 8: Bus Setup screen
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Multilin DGCM Field RTU
Appendix
Appendix
Change notes
Revision history
Table 9–1: Revision History
MANUAL P/N RELEASE DATE
1601-9028-A1 December 2012
1601-9028-A2 June 2013
Table 9–2: Major Updates for DGCM Communication Guide
PAGE NUMBER CHANGES
Manual revision from A1 to A2
Cover updated image and added global technical support numbers
Chapter 1 updated images and order codes, added inputs/outputs & metering specifications and new Applications section
Chapter 2 updated and added images; updated content added new installation section
Chapter 3 updated images and software setup instructions
Chapter 4 added images, modem, and contact input/output information; updated current source information
