CSC-211 Multifunction Protection IED Product Guide_V1.20.pdf

CSC-211Multifunction Protection IED

Product Guide

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Feature

2

Extensive multifunction IED including protection, control and monitoring functions

Three pole tripping required in sub-transmission and distribution network

A complete protection function library, includes:

Overcurrent protection (50, 51, 67)

Earth fault protection (50N, 51N, 67N)

Neutral earth fault protection (50G, 51G)

Sensitive earth fault protection (50Ns, 51Ns, 67Ns)

Negative-sequence overcurrent protection (46)

Thermal overload protection (49)

Overload protection (50OL)

Overvoltage protection (59)

Undervoltage protection (27)

Displacement voltage protection (64)

Circuit breaker failure protection (50BF)

Dead zone protection (50DZ)

Synchro-check and energizing check (25)

Auto-reclosing function (79)

Unbalanced current or voltage protection

Undercurrent protection (37)

load shedding function

Voltage transformer secondary circuit supervision (97FF)

Current transformer secondary circuit supervision

Fast overcurrent/busbar protection scheme using IEC61850 GOOSE- -message

User definable LEDs, binary inputs and outputs.

Primary apparatus local/remote control function

Programmable interlock logic

Tripping and closing circuit supervision

Opening and closing lockout function

CB status supervision

Self-supervision to all modules in the IED

Complete and massive reports recording, trip reports, alarm reports, startup reports and operation reports. Any kinds of reports can be stored no less than 40 items, and be memorized in case of power disconnection

Up to two electric /optical Ethernet ports can be selected to communicate with substation automation system by IEC61850 or IEC60870-5-103 protocols

Up to two electric RS-485 port is able to communicate with substation automation system by IEC60870-5-103 protocol

Time synchronization via network

Feature

3

(SNTP), pulse and IRIG-B mode

Versatile human-machine interface, graphic or alphanumeric options

Multifunctional software tools set for setting, monitoring, fault recording analysis, configuration, logic programming etc.

Function

4

Protection functions

Description ANSI Code

IEC 61850

Logical Node

Name

IEC 60617

graphical symbol

Current protection

Overcurrent protection 50,51,67 PTOC

3IINV>

3I >>

3I >>>

Earth fault protection 50N, 51N, 67N PTEF

I0INV>

I0>>

I0>>>

Neutral earth fault protection 50G, 51G

Sensitive earth fault protection 50Ns, 51Ns,

67Ns

3INE>

3INE>>

Negative-sequence overcurrent protection 46

Thermal overload protection 49 PTTR Ith

Overload protection 50OL PTOC 3I >OL

Voltage protection

Overvoltage protection 59 PTOV 3U>

3U>>

Undervoltage protection 27 PTUV 3U<

3U

Breaker protection and control function

Breaker failure protection 50BF RBRF

3I> BF

I0>BF

I2>BF

Dead zone protection 50DZ

Synchro-check and energizing check 25 RSYN

Auto-reclosing 79 RREC OI Three-pole tripping 94-3 PTRC

Capacitor bank protection

Unbalanced current protection 46NC

Unbalanced voltage protection 46NU

Function

5

Undercurrent protection 37 I<

Load shedding function

Underfrequency load shedding function 81U

Undervoltage load shedding function 27

Overload load shedding function

Secondary system supervision

CT secondary circuit supervision

VT secondary circuit supervision 97FF

Other functions

Fast busbar protection using reverse

interlocking

Disturbance recorder

Control functions

Description ANSI Code IEC 61850

Logical Node Name

IEC 60617

graphical symbol

Remote/Local circuit breaker, disconnector

and other switching devices control

Programmable interlock logic

Tripping and closing circuit supervision

Opening and closing lockout function

Monitoring functions

Description

Status of circuit breaker, disconnector and other switching device monitoring

Circuit breaker operating status supervision

Auxiliary contacts of circuit breaker supervision

Self-supervision

Function

6

Station communication

Description

Front communication port

Isolated RS232 port or RJ45 Ethernet port

Rear communication port

0-2 isolated electrical RS485 communication ports, support IEC 60870-5-103 protocol

0-2 Ethernet electrical/optical communication ports, support IEC 61850 protocol or IEC 60870-5-103

protocol

Time synchronization port, support GPS pulse or IRIG-B code

IED software tools

Functions

Reading measuring value

Reading IED report

Setting

IED testing

Disturbance recording analysis

IED configuration

Printing

Function

7

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Disturbance recording

Protection

8

Overcurrent protection (50, 51, 67) The protection provides following features:

Two definite time stages

One inverse time stage

11 kinds of IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic

Settable directional element characteristic angle to satisfy the different network conditions and applications

Each stage can be set individually as directional/non-directional

Each stage can be set individually for inrush restraint

Cross blocking function for inrush detection

Settable maximum inrush current

First definite stage and inverse time stage can be set individually to alarm or trip

VT secondary circuit supervision for directional protection. Once VT failure happens, the directional stage can be set to be blocked or to be non-directional

Under voltage criteria checking (selectable), blocking of the definite time stages is possible when the measured voltage exceeds the threshold

Inrush restraint function The protection relay may detect large magnetizing inrush currents during

transformer energizing. In addition to considerably unbalanced fundamental current, inrush current comprises large second harmonic current which doesnt appear in short circuit current. Therefore, the inrush current may affect the protection functions which operate based on the fundamental component of the measured current. Accordingly, inrush restraint logic is provided to prevent overcurrent protection from mal-operation.

Furthermore, by recognition of the inrush current in one phase, it is possible to set the protection in a way that not only the phase with the considerable inrush current, but also the other phases of the overcurrent protection are blocked for a certain time. This is achieved by cross-blocking feature integrated in the IED.

The inrush restraint function has a maximum inrush current setting. Once the measuring current exceeds the setting, the overcurrent protection will not be blocked any longer.

Characteristic of direction element The direction detection is performed by determining the position of current vector in directional characteristic. In other word, it is done by comparing phase angle between the fault current and the reference voltage, Figure 1 illustrates the direction detection characteristic for phase A element.

Protection

9

Forward

UBC_Ref

Ph_Char

IA

IA-

0

90

Bisector

Figure 1 Direction detection characteristic of

overcurrent protection directional element

where:

Ph_Char: The settable characteristic angle The assignment of the applied measuring values used in direction determination has been shown in Table 1for different types of faults.

Table 1 Assignment of applied current and reference voltage for directional element

Phase Current Voltage

A aI bcU B bI caU C cI abU

For three-phase short-circuit fault, without any healthy phase, memory voltage values are used to determine direction clearly if the measured voltage values are not sufficient. The detected direction is based on the voltage of previously saved cycles.

Under voltage criteria To prevent any malfunction of the overcurrent element during reverse

charging of motors, the definite time stage of overcurrent element is able to operate only when at least one phase-to-phase voltage falls less than the low voltage settable threshold .The low voltage element can be set for each definite time stage.

Earth fault protection (50N, 51N, 67N) The earth fault protection can be used to clear phase to earth faults as system back-up protection.

The protection provides following features:



11 kinds of the IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic

Zero sequence directional element

Negative sequence directional element is applied as a complement to zero sequence directional element. It can be enabled/disabled by setting

Each stage can be set individually as directional/non-directional


Each stage can be set individually for inrush restraint

Settable maximum inrush current

Inrush restraint function adopting 2nd

harmonic measured phase or earth current (settable)

Protection

10

First definite stage and inverse time stage can be set individually to alarm or trip

VT secondary circuit supervision for directional protection function. Once VT failure happens, the directional stage can be set to be blocked or to be non-directional

Zero-sequence current is calculated by summation of 3 phase currents or measured from earth phase CT selectable

Directional element

The earth fault protection adopts zero sequence directional element which compares the zero sequence system quantities:

3I0, current is calculated from the sum of the three phase currentss or measured from earth phase CT

3U0, the voltage is used as reference voltage, if it is connected. Otherwise, 3U0, the zero sequence voltage, calculated from the sum of the three phase voltages

Figure 2 Direction detection characteristic of zero sequence directional element

where:

0_Char: The settable characteristic angle For earth fault protection, users can choose negative sequence directional element as the complement of zero sequence directional element. It can be used in case of too low zero sequence voltage due to some fault condition e.g. the unfavorable zero-sequence. The negative sequence directional element characteristic is shown in Figure 3

.

Figure 3 Direction detection characteristic of negative sequence directional element

where:

2_Char: The settable characteristic angle Furthermore, under the VT failure situation, it can be set to block directional earth fault protection or to apply non-directional earth fault protection.

Inrush restraint function The protection relay may detect large magnetizing inrush currents during transformer energizing. In addition to considerably unbalanced fundamental current, Inrush current comprises large second harmonic current which doesnt

Protection

11

appear in short circuit current. Therefore, the inrush current may affect the protection functions which operate based on the fundamental component of the measured current. Accordingly, inrush restraint logic is provided to prevent earth fault protection from mal-operation.

Since inrush current cannot be more than a specified value, the inrush restraint provides an upper current limit in which blocking does not occur.

Neutral earth fault protection (50G, 51G) The neutral earth fault protection focuses on phase to earth faults. The measuring current is the one from dedicated neutral CT.

The protection provides following features:




Each stage can be set individually to alarm or trip

Neutral current is measured from dedicated neutral CT

Sensitive earth fault protection (50Ns, 51Ns, 67Ns) The function provides a high sensitive earth fault protection for cables and high impedance grounded or isolated systems where single phase short circuit current is

made by capacitive current. Furthermore, the function can operate with/without selective tripping according to fault direction.

Sensitive earth fault protection integrated in the IED provides following features:




Sensitive earth fault directional element with 3U0/3I0- principle

Sensitive earth fault directional element with Cos principle


Each stage can be set to be directional, or non-directional independently

Each stage can be set individually to alarm or trip

Displacement voltage can be checked to increase function reliability

Dedicated sensitive CT

VT secondary circuit supervision for directional protection function

For compensated-earthed system or high resistance earthed system with outgoing cable feeders, the directional protection is provided during a single phase fault.

In general, for high impedance earthed system, whenever a feeder has a high capacitive current - normally one greater than 10% of the current limited by the

Protection

12

neutral earthed impedance a simple sensitive earth fault relay is no longer enough to give sensitive and selective protection. In this case, the protection system for the feeder consists of a directional sensitive earth fault relay whose threshold can be set to below the capacitive current.

In order to discriminate forward and reverse short circuits, the IED provides two methods for sensitive earth fault direction detection which should be utilized to cover all network configurations according to the type of grounding. The following characteristic is possible for directional detection:

Directional sensitive earth fault detection based on U0/I0- measurement (see Figure 4)

Forward

Bisector

NS_Char

I- NS

INS

3 RefU0_

0

90

Figure 4 Direction detection characteristic of the sensitive earth fault directional element by

U0/I0- where:

NS_Char: The settable characteristic angle Based on current vector component

(Cos ) measurement (see Figure 5). In this way, the relay is sensitive to the

active residual current and insensitive to the capacitive current

Figure 5 Direction detection characteristic of the sensitive earth fault directional element by Cos

A sensitive current transformer is provided to detect the small earth fault current (weak zero sequence current) in isolated networks or in networks with high earthed impedance where the earth fault current is extremely small.

Negative-sequence overcurrent protection (46) Negative sequence (or phase unbalance) protection is essentially provided for the protection of generators, motors and feeders against unbalanced loading that may arise due to phase-to-phase faults. In addition, it is useful in detecting asymmetrical short circuits with magnitudes lower than the maximum load current, especially in delta side of the transformers.

The protection provide following features:

Protection

13




The first definite stage and inverse stage can be set individually as alarm or trip stage

Furthermore, this protection function may be used to detect interruptions, faults and polarity problems with CT.

Thermal overload protection (49) The insulating material surrounding the windings ages rapidly if the temperature exceeds the design limit value. Thus, a thermal protection function is required to supplement the existing winding temperature device. The thermal overload protection estimates winding temperature and thus prevents it from thermal damaging.

The memorized thermal overload protection operates based on an approximate replica of the temperature rise in the protected object caused by overload.

The thermal replica can be implemented based on thermal models (Cold or Hot Curve) of IEC60255-8 standard.

The thermal overload in the IED is provided with one trip stage as well as one alarm stage. It is possible to set the alarm stage at a certain percentage of the setting value applied at the trip stage.

The calculation is performed separately for each phase based on fundamental

component.

Overload protection (50OL) The IED supervises load flow in real time. If each phase current is greater than the dedicated setting for a set delay time, the protection will issue alarm or tripping.

Overvoltage protection (59) The overvoltage protection detects abnormal network and machine high voltage conditions. Overvoltage conditions may occur possibly in the power system during abnormal conditions such as no-load, light load, or open line end on long line. The protection can be used as open line end detector or as system voltage supervision normally. The protection provides following features:


First stage can be set to alarm or trip

Measuring voltage between phase-earth voltage and phase-phase (selectable)

Three phase or single phase voltage connection

Settable dropout ratio

Undervoltage protection (27) The Undervoltage protection provides protection against dangerous voltage drops, especially for electric machines.

Protection

14

The protection function provides following features:


First stage can be set to alarm or trip

Measuring voltage between phase-earth voltage and phase-phase selectable

Current criteria supervision

Circuit breaker aux. contact supervision

VT secondary circuit supervision, the under voltage function will be blocked when VT failure happens

Settable dropout ratio

Displacement voltage protection (64) The displacement voltage protection is able to monitor the displacement voltage to detect the earth fault in power system. It is usually applied in non-solidly earthed networks where the earth fault current is limited.

The displacement voltage 3U0 can be either directly measured from VT or calculated based on connected three phases to earth voltages. In the latter case, the three voltages transformers input must be connected in an earth-wye configuration.

The protection provide following features:



4 kinds of IEC inverse time characteristic curves as well as

optional user defined characteristic

The first definite stage and inverse stage can be set to alarm or trip

Faulty phase discrimination

3U0 based on calculated summation of 3 phase voltage or measured injected residual voltage

Breaker failure protection (50BF) The circuit breaker failure protection is able to detect a failure of the circuit breaker during a fault clearance. It ensures fast back-up tripping of surrounding breakers by tripping relevant bus sections.

Once a circuit breaker operating failure occurs on a feeder/transformer, the bus section which the feeder/transformer is connected with can be selectively isolated by the protection. In addition a transfer trip signal is issued to trip the remote end circuit breaker of the feeder.

In the event of a circuit breaker failure with a busbar fault, a transfer trip signal is issued to trip the remote end circuit breaker of the feeder.

The current criteria are in combination with three phase currents, zero and negative sequence current to achieve a higher security.

The function can be set to give three phase re-trip of the own breaker to avoid unnecessary tripping of surrounding breakers at an incorrect starting due to mistakes during testing.

Two trip stages (local CB and surrounding breaker tripping)

Protection

15

Transfer trip command to the remote line end in second stage

Internal/ external initiation

Three phase CBF initiation for sub-transmission system and distribution system

Settable CB Aux contacts checking

Current criteria checking (including phase current, zero and negative sequence current)

Dead zone protection (50DZ) The IED provides dead zone protection to protect the area, between circuit breaker and CT in the case that CB is open, meaning dead zone. Therefore, by occurrence of a fault in dead zone, the short circuit current is measured by protection relay while CB auxiliary contacts indicate the CB is open.

Internal/ external initiation

Self-adaptive for bus side CT or line side CT

When one bus side CT of feeder is applied, once a fault occurs in the dead zone, the IED trips the relevant busbar zone. Tripping logic is illustrated in Figure 6.

When one line side CT is applied, when a fault occurs in the dead zone, protection relay sends a transfer trip to remote end relay to isolate the fault. Tripping logic is illustrated in Figure 7.

Figure6TrippinglogicwhenapplyingbussideCT

Figure7TrippinglogicwhenapplyinglinesideCT

Protection

16

Synchro-check and energizing check (25) The synchro-check function checks voltages of the circuit breaker sides for synchronism conditions.

The synchronization function ensures the stability of the network in three phase reclosing condition. To do this, the two side voltages of the circuit breaker are compared in terms of magnitude, phase angle and frequency differences. Additionally, closing can be done safely in conditions that at least one side of the CB has dead voltage.

Available for automatic reclosing and manual closing (internally or externally)

Based on voltage/ angle/ frequency difference

Synchro-check conditions:

Synch-check Energizing check, and synch-check if

energizing check failure

Override Modes of energizing check:

Dead V4 and dead V3Ph Dead V4 and live V3Ph Live V4 and dead V3Ph

Synchro-check reference voltage supervision If the automatic reclosing is set for synchronization check or energizing check, during the automatic reclosing period, the synchronization condition of the voltages between both sides of CB cannot be met, an alarm will be issued after default time

delay.

Auto-reclosing (79)

For restoration of the normal service after a fault an auto reclosing attempt is mostly made for overhead lines. Experiences show that about 85% of faults have transient nature and will disappear after an auto reclosing attempt is performed. This means that the line can be re-energized in a short period. The reconnection is accomplished after a dead time via the automatic reclosing function. If the fault is permanent or short circuit arc has not disappeared, the protection will re-trip the breaker. Main features of the auto-reclosing are as follows:

4 shots automatic reclosing (selectable)

Individually settable dead time for each shot

Internal/external AR initiation

Three phase AR operation

CB ready supervision

CB Aux. contact supervision

Cooperation with internal synch-check function for reclosing command

Unbalanced current or voltage protection (46) The purpose of the unbalance detection scheme is to remove fuse operated a capacitor bank from the network. This will prevent damaging overvoltage across the remaining capacitor units/elements where the fuse operation occurs.

Protection

17

Unbalance detection scheme is set up to signal an alarm upon an initial failure in a bank. Upon subsequent critical failures, the bank will be tripped from the connected network. According to the used unbalanced voltage/current, the IED supports different protection schemes mentioned in the typical connections.

The IED provides three analog channels to monitor unbalance status. If only one unbalanced channel is used, the other two channels can be reserved. To avoid mal-operation, breaker auxiliary contact is necessary as a criterion.

Undercurrent protection (37) Under current protection is used to prevent reconnection of the charged capacitor bank to energized network when a short loss of supply voltage occurs.

Once under current protection operates, the CB closing circuit will be interrupted and reset after a certain time. Additionally, time to resetting will be displayed on the HMI.

Capacitor overload protection (50OL) The current overload protection is provided to protect the capacitor bank against the faults due to overvoltage which leads to dielectric breakdown.

The tripping and alarming capability are provided and can be enabled or disabled separately.

Load shedding function The IED provides three kinds of load shedding functions listed below.

Under frequency load shedding protection The function monitors the network abnormality by detection of frequency reduction. When the system frequency falls down to a threshold frequency with following conditions satisfied, specified load will be removed.

Up to four stages (L01 only)

Under voltage checking

Rate of frequency (df/dt) checking

CB position checking

Load current checking

VT secondary circuit supervision

Under voltage load shedding This kind of load shedding is to prevent the voltage collapse and uncontrolled loss of load.

Low voltage load shedding is necessary when the network is connected with a huge system with vast power capacity. Under this condition, Low Frequency Load Shedding Scheme cannot work properly. Low Voltage Load Shedding Scheme" would be a useful criterion whenever Automatic Voltages Regulator (AVR) is out of service or not equipped with following conditions satisfied.



Negative sequence voltage checking

Protection

18

Rate of voltage (du/dt) checking

CB position checking

Load current checking


Overload load shedding The IED provides a load shedding function based on the load current passing through feeder. This function will be essential in conditions that feeder is connected to a huge network with constant frequency and additional AVR is continuously used for voltage regulation. In this case, load shedding protection should be done based on load current and monitoring of following items



Rate of voltage (du/dt) checking (in the case of voltage connection)

Rate of frequency (df/dt) checking (in the case of voltage connection)

VT secondary circuit supervision (in the case of voltage connection)

Fast busbar protection scheme The IED provides fast busbar protection which is achieved based on operation with GOOSE signals, it is able to block the incoming feeder protection IED function by reception of a defined GOOSE signals from the outgoing feeder linked with the same busbar.

The principle illustrated in the following figure:

If the fault occurs on outgoing feeder C, the protection IED C will trip and send block messenger to IED A to block IED A relevant protection function.

Figure 8 operation when fault on the feeder C

Protection

19

Figure 9 operation when fault on the Busbar

Once the fault located on the busbar, there is not one protection IED of outgoing feeder to trip and block the IED A. So the IED A will trip and clear off the fault with short time delay.

Secondary system supervision Current transformer secondary

circuit supervision Open or short circuited CT cores can cause unwanted operation of some protection functions such as earth fault current and negative sequence current functions.

Interruption of the CT secondary circuit is detected based on zero-sequence current. Once CT failure happens, each stage of earth fault protection is blocked.

Voltage transformer secondary circuit supervision A measured voltage failure, due to a broken conductor or a short circuit fault in the secondary circuit of voltage transformer, may result in unwanted operation of the protection functions which work based on voltage criteria. VT failure supervision function is provided to block these protection functions and enable the backup protection functions. The features of the function are as follows:

Symmetrical/asymmetrical VT failure detection

3-phase AC voltage MCB monitoring

1-phase AC voltage MCB monitoring

Zero and negative sequence current monitoring

Applicable in solid grounded, compensated or isolated networks

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Monitoring

21

Phase-sequence of voltage and current supervision The phase-sequence of three phase voltage and current are monitored in the normal condition to determine that the secondary circuit of CT or VT is connected with IED correctly.

3I0 polarity supervision The IED compare the magnitude and phase angle of the calculated zero sequence current with the measured one to determine that the polarity is connected in a right way.

The third harmonic of voltage supervision If the third harmonic voltage is excessive, the alarm without blocking protection will be given with delay time for checking of the secondary circuit of voltage transformer.

Auxiliary contacts of circuit breaker supervision Current flowing through the transmission line and connected CB aux. contacts are monitored in phase segregated. Therefore, the conflict condition is reported as alarm. For example, If CB aux. contacts indicate that CB is open in phase A and at the same time flowing current is measured in this phase, related alarm is reported.

Broken conductor detection The main purpose of the broken conductor detection function is to detect the broken

conductors on protected transmission lines and cables. Detection can initiate an alarm or tripping.

Self-supervision All modules can perform self-

supervision to its key hardware components and program, as soon as energizing. Parts of the modules are self-supervised in real time. All internal faults or abnormal conditions will initiate an alarm. The fatal faults among them will result in the whole IED blocked

The sampled data from the redundant A/D sampling channels compare with each other in real time. If the difference exceeds the specified threshold, it will be considered as analog input channel fault and the protection will be blocked immediately

CPU module and communication module perform real time inter- -supervision. Therefore communication interruption between them is detected and related alarm will be given

CRC checks for the setting, program and configuration, etc.

Fault locator The built-in fault locator is an impedance measuring function giving the distance from the IED measuring location to the fault position in km. The IED reports fault location after the IED tripping.

Communication

22

Station communication

Overview The IED is able to connect to one or more substation level systems or equipments simultaneously, through the communication ports with communica- -tion protocols supported. (Shown in Figure 12)

Front communication port There is a serial RS232 port on the front plate of all the IEDs. Through this port, the IED can be connected to the personal computer for setting, testing, and configuration using the dedicated

Sifang software tool.

RS485 communication ports Up to 2 isolated electrical RS485 communication ports are provided to connect with substation automation system. These two ports can work in parallel for IEC60870-5-103.

Ethernet communication ports Up to 3 electrical or optical Ethernet communication ports are provided to connect with substation automation system. These two out of three ports can work in parallel for protocol, IEC61850 or IEC60870-5-103.

Figure 12 Connection example for multi-networks of station automation system

Note: All four ports can work in parallel

Communication protocol The IED supports station communication with IEC 61850-8 and IED60870-5-103 protocols.

By means of IEC61850, GOOSE peer- -to-peer communication make it possible

that bay IEDs can exchange information to each other directly, and a simple master-less system can be set up for bay and system interlocking and other interactive function.

Time synchronization port

Software Tools

23

All IEDs feature a permanently integrated electrical time synchronization port. It can be used to feed timing telegrams in IRIG-B or pulse format into the IEDs via time synchronization receivers. The IED can adapt the second or minute pulse in the pulse mode automatically.

Meanwhile, SNTP network time synchro- -nization can be applied.

Figure 13 illustrates the optional time synchronization modes.

Figure 13 Time synchronizing modes

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Hardware

27

Front plate The whole front plate is divided into zones, each of them with a well-defined functionality:

Figure 18 The option 1 of view of IED front plate

1 Liquid crystal display (LCD), alpha- -numeric display only

2 8 LEDs

3 Navigation keys

4 Reset key

5 Quit key

6 Set key

7 RS232 communication port

Figure 19 The option 2 of view of IED front plate for advanced IED version only

1 Liquid crystal display (LCD), alpha- -numeric and graphic display

2 16 LEDs

3 Quit key

4 Reset key

5 Set key

6 Navigation keys

7 RJ45 Ethernet communication port

8 R/L Remote/Local control switch key

9 LCD display switch key

10 Controlled objects select key

11 Control operation confirm key

12 Open key

13 Close key

Hardware

28

Modules Analogue Input Module (AIM)

The analogue input module is used to galvanically separate and transform the secondary currents and voltages generated by the measuring transformers.

3 dedicated high accurate current transformers (optional) are used for metering.

CPU module (CPU)

The CPU module handles all protection functions and logic, hardware self-supervision and performs communication and information exchange between the protection system and external equipments such as HMI, PC, monitor, control system, substation automation system, engineer station, RTU and printer, etc. Additionally, the CPU module transmits remote metering, remote signaling, SOE, event reports and record data. The module also provides binary inputs, synchronization and communica- -tion ports.

The pulse, IRIG-B or SNTP mode can be applied for time synchronization.

According to requirement, up to 2 isolated electrical or optical Ethernet ports (optical Ethernet ports optional) and up to 2 RS485 serial communication port can be provided to meet the demands of different substation automation system and RTU at the same time.

There are 7 binary input channels (DC24V) in the CPU module for standard version.

There are 3 binary input channels (DC24V) in the CPU module for advanced version.

Direct binary Output Module (DOM)

This module is used to provide fast tripping outputs and initiating outputs for protection functions, and signaling output, for standard version only.

10 binary output relays with 10 contacts in 5 groups are provided in the FOM of standard version.

Direct binary Input & Output module (DIO)

In this module, the fast binary inputs are used to connect with the signals and alarms. The fast binary outputs are used for the tripping outputs and initiating outputs for protection functions, or signaling output.

4 binary inputs and 7 binary output relays are provided in this module of standard version.

5 binary inputs and 7 binary output relays are provided in this module of advanced version.

Binary Input & Output module (BIO)

In this module, the output contacts are used for controlling and signaling outputs mainly. The binary inputs are used to connect with the input signals and alarms.

7 binary inputs and 9 binary output relays have been provided in this module of standard version.

5 binary inputs and 8 binary output relays are provided in this module of advanced version.

Power Supply Module (PSM)

The power supply module is used to provide the correct internal voltages and full isolation between the terminal and the

Hardware

29

battery system. The module of standard version provides 9 binary input channels. And the module of advanced version provides 10 binary input channels as well.

Hardware

30

Dimension

A

E

Figure 20 Case of CSC211 protection IED

Table 2 Dimension of the IED

Legend A B C D E F

Dimension (mm) 177 231 193.8 220.8 149 193.5

Figure 21 Cutout for flush mounting on the panel

Table 3 Dimension of the cutout

Legend A B C D E

Dimension (mm) 199.5 213.5 101.6 156 6.5

Connection

31

A. Typical rear terminal diagram of standard version

Connection

32

B. Typical rear terminal diagram of advanced version

Connection

33

Connection

34

C. Typical analogue input connection for incoming or outgoing feeder protection or line backup protection

Figure 22 Application of feeder protection to measure three phase and earth currents

Figure 23 Application of feeder protection to measure three phase and earth currents and three phase

voltages (bus side)

Connection

35

Figure 24 Application of feeder protection to measure three phase and earth currents and three phase

voltages (line side)

Connection

36

Figure 25 Application of feeder protection to measure three phase and earth currents and single phase voltage (Ph-Ph) (bus side)

Connection

37

Figure 26 Application of feeder protection to measure three phase and earth currents and single phase voltage (Ph-E) (bus side)

Connection

38

Figure 27 Application of feeder protection to measure three phase currents, earth current, and sensitive earth current

Connection

39

Figure 28 Application of feeder protection to measure three phase currents, earth current and sensitive earth current, and three phase voltages (bus side)

Connection

40

Figure 29 Application of feeder protection to measure three phase currents, earth current and sensitive earth current, and three phase voltages (line side)

Connection

41

Figure 30 Application of feeder protection to measure three phase currents, earth current and sensitive earth current, and single phase voltage (Ph-Ph) (bus side)

Connection

42

Figure 31 Application of feeder protection to measure three phase currents, earth current, and

sensitive earth current, and single phase voltage (Ph-E) (bus side)

Connection

43

D. Typical analogue input connection for transformer backup protection

IA

IB

IC

IN

AIM2

ABC

* * *

I01

I03

I05

I07

I02

I04

I06

I08

I01

AIM1

I02 I1*

Figure 32 Application of transformer backup protection to measure three phase currents, earth current,

and neutral current

Connection

44

Figure 33 Application of transformer backup protection to measure three phase currents, earth current

and neutral current, and three phase voltages (bus side)

Connection

45


and neutral current, and three phase voltages (line side)

Connection

46

Figure 35 Application of transformer backup protection to measure three phase currents, earth current and neutral current, and single phase voltage (Ph-Ph) (bus side)

Connection

47

IA

IB

IC

IN

AIM2

ABC

* * *

I01

I03

I05

I07

I02

I04

I06

I08

I01

AIM1

I02 I1

UBUA

UCUN

U01

U02

U03

U04

AIM2

*


and neutral current, and single phase voltage (Ph-E) (bus side)

Connection

48

E. Typical analogue input connection for synch-check function

Figure 37 Typical connection for synch-check on bus coupler applications

Connection

49

Figure 38 Typical connection for synch-check and feeder current protection

Connection

50

F. Typical analogue input connection for capacitor bank protection

ABC

Capacitor bank

IC1

IC2

IC3

AIM1

*

*

* I03

I05

I07

I04

I06

I08

Figure 39 Typical connection for capacitor bank unbalanced current protection with three current inputs

Figure 40 Typical connection for capacitor bank unbalanced voltage protection with three voltage inputs

Connection

51

Figure 41 Typical connection for capacitor bank unbalanced current protection with one current input

Figure 42 Typical connection for capacitor bank unbalanced voltage protection with one voltage input

Connection

52

Figure 43 Unbalanced current detection for grounded capacitor bank

Figure 44 Neutral current differential protection for grounded Split-Wye capacitor bank

Figure 45 Neutral current protection for ungrounded split-Wye capacitor bank

Figure 46 Three unbalanced currents detection for capacitor bank

Figure 47 Neutral voltage unbalanced protection for unrounded Wye capacitor bank

Figure 48 Neutral voltage unbalanced detection for ungrounded split-Wye capacitor bank

Connection

53

Figure 49 Summation of Intermediate tap-point voltage for grounded Wye capacitor bank

Figure 50 Neutral voltage unbalance detection by 3VTs for unrounded Wye capacitor bank

Figure 51 Neutral voltage protection for ungrounded split-Wye capacitor bank

Figure 52 Three unbalanced voltages detection

for Capacitor Bank

G. Typical analogue input connection for Load shedding function

CSC-211 CSC-211 CSC-211 CSC-211 CSC-211

Figure 53 Typical connection for load shedding function

Technical data

54

Frequency

Item Standard Data

Rated system frequency IEC 60255-1 50 Hz or 60Hz

Internal current transformer

Item Standard Data

Rated current Ir IEC 60255-1 1 or 5 A

Nominal current range 0.05 Ir to 30 Ir

Nominal current range of sensitive

CT

0.005 to 1 A

Power consumption (per phase) 0.1 VA at Ir = 1 A; 0.5 VA at Ir = 5 A 0.5 VA for sensitive CT

Thermal overload capability IEC 60255-1

IEC 60255-27

100 Ir for 1 s

4 Ir continuous

Thermal overload capability for

sensitive CT

IEC6025527DL/T4782001

100 A for 1 s

3 A continuous

Internal voltage transformer

Item Standard Data

Rated voltage Vr (ph-ph) IEC 60255-1 100 V /110 V

Nominal range (ph-e) 0.4 V to 120 V

Power consumption at Vr = 110 V IEC 60255-27

DL/T 478-2001

0.1 VA per phase

Thermal overload capability

(phase-neutral voltage)

IEC 60255-27

DL/T 478-2001

2 Vr, for 10s

1.5 Vr, continuous

Auxiliary voltage

Item Standard Data Rated auxiliary voltage Uaux IEC60255-1 100 to 125V

195 to 250V

Permissible tolerance IEC60255-1 %20 Uaux

Power consumption at quiescent

state

IEC60255-1 50 W per power supply module

Technical data

55

Power consumption at maximum

load

IEC60255-1 60 W per power supply module

Inrush Current IEC60255-1 T 5 ms/I 35 A

Binary inputs

Item Standard Data

Input voltage range IEC60255-1 110/125 V

220/250 V

Threshold1: guarantee

operation

IEC60255-1 154V, for 220/250V

77V, for 110V/125V

Threshold2: uncertain operation IEC60255-1 132V, for 220/250V ;

66V, for 110V/125V

Response time/reset time IEC60255-1 Software provides de-bounce

time

Power consumption, energized IEC60255-1 Max. 0.5 W/input, 110V

Max. 1 W/input, 220V

Binary outputs

Item Standard Data

Max. system voltage IEC60255-1 250V /~

Current carrying capacity IEC60255-1 5 A continuous,

30A200ms ON, 15s OFF Making capacity IEC60255-1 1100 W( ) at inductive load with

L/R>40 ms

1000 VA(AC)

Breaking capacity IEC60255-1 220V , 0.15A, at L/R40 ms 110V , 0.30A, at L/R40 ms

Mechanical endurance, Unloaded IEC60255-1 50,000,000 cycles (3 Hz switching

frequency)

Mechanical endurance, making IEC60255-1 1000 cycles

Mechanical endurance, breaking IEC60255-1 1000 cycles

Specification state verification IEC60255-1

IEC60255-23

IEC61810-1

UL/CSATV

Technical data

56

Contact circuit resistance

measurement

IEC60255-1

IEC60255-23

IEC61810-1

30m

Open Contact insulation test (AC

Dielectric strength)

IEC60255-1

IEC60255-27

AC1000V 1min

Maximum temperature of parts and

materials

IEC60255-1 55

Front communication port

Item Data Number 1

Connection Isolated, RS232; front panel,

9-pin subminiature connector, for software tools

Communication speed 9600 baud

Max. length of communication cable 15 m

RS485 communication port

Item Data

Number 1

Connection 2-wire connector

Rear port in communication module

Max. length of communication cable 1.0 km

Test voltage 500 V AC against earth

For IEC 60870-5-103 protocol

Communication speed Factory setting 9600 baud,

Min. 1200 baud, Max. 19200 baud

Ethernet communication port

Item Data

Electrical communication port

Number 0 to 3

Connection RJ45 connector


Max. length of communication cable 100m

For IEC 61850 protocol

Technical data

57

Communication speed 100 Mbit/s

For IEC 60870-5-103 protocol

Communication speed 100 Mbit/s

Time synchronization

Item Data Mode Pulse mode

IRIG-B signal format IRIG-B000

Connection 2-wire connector


Voltage levels differential input

Environmental influence

Item Data Recommended permanent operating temperature -10 C to +55C

(Legibility of display may be impaired above

+55 C /+131 F)

Storage and transport temperature limit -25C to +70C

Permissible humidity 95 % of relative humidity

IED design

Item Data

Case size 4U1/2 19inch

Weight 5kg

Technical Data

58

Product safety-related Tests

Item Standard Data

Over voltage category IEC60255-27 Category III

Pollution degree IEC60255-27 Degree 2

Insulation IEC60255-27 Basic insulation

Degree of protection (IP) IEC60255-27

IEC 60529

Front plate: IP40

Rear, side, top and bottom: IP 30

Power frequency high voltage

withstand test

IEC 60255-5

EN 60255-5

ANSI C37.90

GB/T 15145-2001

DL/T 478-2001

2KV, 50Hz

2.8kV

between the following circuits:

auxiliary power supply CT / VT inputs binary inputs binary outputs case earth 500V, 50Hz

between the following circuits:

Communication ports to case earth

time synchronization terminals to case earth

Impulse voltage test IEC60255-5

IEC 60255-27

EN 60255-5

ANSI C37.90

GB/T 15145-2001

DL/T 478-2001

5kV (1.2/50s, 0.5J) If Ui63V 1kV if Ui

Technical Data

59

DL/T 478-2001

Protective bonding resistance IEC60255-27 0.1 Fire withstand/flammability IEC60255-27 Class V2

Electromagnetic immunity tests

Item Standard Data

1 MHz burst immunity test IEC60255-22-1

IEC60255-26

IEC61000-4-18

EN 60255-22-1

ANSI/IEEE C37.90.1

Class III

2.5 kV CM ; 1 kV DM

Tested on the following circuits:

auxiliary power supply CT / VT inputs binary inputs binary outputs 1 kV CM ; 0 kV DM


communication ports Electrostatic discharge IEC 60255-22-2

IEC 61000-4-2

EN 60255-22-2

Level 4

8 kV contact discharge;

15 kV air gap discharge;

both polarities; 150 pF; Ri = 330 Radiated electromagnetic field

disturbance test

IEC 60255-22-3

EN 60255-22-3

Frequency sweep:

80 MHz 1 GHz; 1.4 GHz 2.7 GHz

spot frequencies:

80 MHz; 160 MHz; 380 MHz; 450

MHz; 900 MHz; 1850 MHz; 2150

MHz

10 V/m

AM, 80%, 1 kHz

Radiated electromagnetic field

disturbance test

IEC 60255-22-3

EN 60255-22-3

Pulse-modulated

10 V/m, 900 MHz; repetition rate

200 Hz, on duration 50 %

Electric fast transient/burst immunity

test

IEC 60255-22-4,

IEC 61000-4-4

EN 60255-22-4

ANSI/IEEE C37.90.1

Class A, 4KV


auxiliary power supply CT / VT inputs binary inputs binary outputs

Technical Data

60

Class A, 1KV


communication ports Surge immunity test IEC 60255-22-5

IEC 61000-4-5

4.0kV L-E

2.0kV L-L


auxiliary power supply CT / VT inputs binary inputs binary outputs 500V L-E


communication ports Conduct immunity test IEC 60255-22-6

IEC 61000-4-6

Frequency sweep: 150 kHz 80

MHz

spot frequencies: 27 MHz and 68

MHz

10 V

AM, 80%, 1 kHz

Power frequency immunity test IEC60255-22-7 Class A

300 V CM

150 V DM

Power frequency magnetic field test IEC 61000-4-8 Level 4

30 A/m cont. / 300 A/m 1 s to 3 s

100 kHz burst immunity test IEC61000-4-18 2.5 kV CM ; 1 kV DM


auxiliary power supply CT / VT inputs binary inputs binary outputs 1 kV CM ; 0 kV DM


communication ports

DC voltage interruption test

Item Standard Data DC voltage dips IEC 60255-11 100% reduction 20 ms

Technical Data

61

60% reduction 200 ms

30% reduction 500 ms

DC voltage interruptions IEC 60255-11 100% reduction 5 s

DC voltage ripple IEC 60255-11 15%, twice rated frequency

DC voltage gradual shutdown /start-up

IEC 60255-11 60 s shut down ramp

5 min power off

60 s start-up ramp

DC voltage reverse polarity IEC 60255-11 1 min

Electromagnetic emission test

Item Standard Data

Radiated emission IEC60255-25

EN60255-25

CISPR22

30MHz to 1GHz ( IT device may up

to 5 GHz)

Conducted emission IEC60255-25

EN60255-25

CISPR22

0.15MHz to 30MHz

Mechanical tests

Item Standard Data

Sinusoidal Vibration response

test

IEC60255-21-1

EN 60255-21-1

Class 1

10 Hz to 60 Hz: 0.075 mm

60 Hz to 150 Hz: 1 g

1 sweep cycle in each axis

Relay energized

Sinusoidal Vibration endurance

test

IEC60255-21-1

EN 60255-21-1

Class 1

10 Hz to 150 Hz: 1 g

20 sweep cycle in each axis

Relay non-energized

Shock response test IEC60255-21-2

EN 60255-21-2

Class 1

5 g, 11 ms duration

3 shocks in both directions of 3 axes

Relay energized

Shock withstand test IEC60255-21-2

EN 60255-21-2

Class 1

15 g, 11 ms duration

3 shocks in both directions of 3 axes

Technical Data

62

Relay non-energized

Bump test IEC60255-21-2 Class 1

10 g, 16 ms duration

1000 shocks in both directions of 3

axes

Relay non-energized

Seismic test IEC60255-21-3 Class 1

X-axis 1 Hz to 8/9 Hz: 7.5 mm

X-axis 8/9 Hz to 35 Hz :2 g

Y-axis 1 Hz to 8/9 Hz: 3.75 mm

Y-axis 8/9 Hz to 35 Hz :1 g

1 sweep cycle in each axis,

Relay energized

Climatic tests

Item Standard Data

Cold test - Operation IEC60255-27

IEC60068-2-1

-10C, 16 hours, rated load

Cold test Storage IEC60255-27 IEC60068-2-1 -25C, 16 hours

Dry heat test Operation [IEC60255-27

IEC60068-2-2

+55C, 16 hours, rated load

Dry heat test Storage IEC60255-27

IEC60068-2-2

+70C, 16 hours

Change of temperature IEC60255-27

IEC60068-2-14

Test Nb, figure 2, 5 cycles

-10C / +55C

Damp heat static test IEC60255-27

IEC60068-2-78

+40C, 93% r.h. 10 days, rated load

Damp heat cyclic test IEC60255-27

IEC60068-2-30

+55C, 93% r.h. 6 cycles, rated load

CE Certificate

Item Data

EMC Directive EN 61000-6-2 and EN61000-6-4 (EMC Council

Directive 2004/108/EC)

Low voltage directive EN 60255-27 (Low-voltage directive 2006/95 EC).

Technical Data

63

Functions NOTE: Ir: CT rated secondary current, 1A or 5A;

Overcurrent protection (ANSI 50, 51, 67)

Item Rang or Value Tolerance

Definite time characteristics

Current 0.08 Ir to 20.00 Ir 3% setting or 0.02Ir Time delay 0.00 to 60.00s, step 0.01s 1% setting or +40ms, at 200% operating setting Reset time approx. 40ms

Reset ratio Approx. 0.95 at I/In 0.5 Inverse time characteristics

Current 0.08 Ir to 20.00 Ir 3% setting or 0.02Ir IEC standard Normal inverse;

Very inverse;

Extremely inverse;

Long inverse

5% setting + 40ms, at 2

Technical Data

64

Characteristic angle 0 to 90, step 1 voltage >1V

Earth fault protection (ANSI 50N, 51N, 67N)

Item Rang or value Tolerance

Definite time characteristic


Reset ratio Approx. 0.95 at I/Ir 0.5 Inverse time characteristics


Very inverse;

Extremely inverse;

Long inverse

IEC60255-151


Technical Data

65

Operating area range of negative

sequence directional element 160

3, at 3U22V

Characteristic angle 50 to 90, step 1

Non-directional neutral earth fault protection (ANSI 50G, 51G)

Item Rang or value Tolerance



Reset ratio Approx. 0.95 at I/Ir 0.5 Inverse time characteristics


Very inverse;

Extremely inverse;

Long inverse


Technical Data

66

Sensitive/normal earth fault protection (ANSI 50Ns, 51Ns, 67Ns)

Item Range or value Tolerance


Current from sensitive CT input 0.005 to 1.000 A , step 0.001 A 3 % setting value or 1 mA Current from neutral CT input 0.08 Ir to 20.00 Ir 3 % setting value or 0.02 IrTime delay 0.00 to 60.00, step 0.01 s 1.5 % setting value or +40

ms, at 200% operating setting

Reset ratio Approx. 0.95 when I/In 0.5 Reset time Approx. 40 ms

Inverse time characteristics

Current from sensitive input 0.005 to 1.000 A , step 0.001 A 3 % setting value or 1 mA Current from normal input 0.08 Ir to 20.00 Ir 3 % setting value or 0.02 IrIEC standard Normal inverse;

Very inverse;

Extremely inverse;

Long inverse


Technical Data

67

Direction measurement IE and VE measured

or 3V0 calculated

3U0 Minimum voltage threshold 2.00 to 100.00 V, step 0.01 V 3 % setting for measured voltage;

5 % setting for calculated voltage

Characteristic angle _SEFChar 0.0 to 90.0, step 1 3 Operating area range 160 3

Negative sequence current protection (ANSI 46)



Current 0.08 Ir to 20.00 Ir 3% setting value or 0.02Ir Time delay 0.00 to 60.00, step 0.01 s 1% setting or +40ms, at

200% operating setting Reset time 40 ms Reset ratio Approx. 0.95 for I2 /Ir > 0.5

Inverse time characteristics


Very inverse;

Extremely inverse;

Long inverse


Technical Data

68

Reset time approx. 40ms

Inrush restraint function

Item Range or value Tolerance

Upper function limit

Max current for inrush restraint

0.25 Ir to 20.00 Ir 3% setting value or 0.02Ir

Ratio of 2nd harmonic current to

fundamental component current

0.10 to 0.45, step 0.01

Cross-block (IL1, IL2, IL3)

(settable time)

0.00s to 60.00 s, step 0.01s 1% setting or +40ms

Thermal overload protection (ANSI-49)


Current 0.1 Ir to 5.00 Ir 3% setting or 0.02Ir Thermal heating time constant 1 to 9999 s Thermal cooling time constant 1 to 9999 s

IEC cold curve

222

ln

II

It

eq

eq IEC 602558, 5% setting or +40ms

IEC hot curve

22

22

ln

IIII

teq

Peq

IEC 602558, 5% setting or +40ms

Breaker failure protection (ANSI 50 BF)


phase current

Negative sequence current

zero sequence current

0.08 Ir to 20.00 Ir 3% setting or 0.02Ir

Time delay of stage 1 0.00s to 32.00 s, step 0.01s 1% setting or +25 ms, at 200% operating setting Time delay of stage 2 0.00s to 32.00 s, step 0.01s

Reset ratio >0.95

Reset time of stage 1 < 20ms

Dead zone protection (ANSI 50DZ)


Technical Data

69

Current 0.08 Ir to 20.00 Ir 3% setting or 0.02Ir Time delay 0.00s to 32.00s, step 0.01s 1% setting or +40 ms, at

200% operating setting

Reset ratio >0.95

Under voltage protection (ANSI 27)


Voltage connection Phase-to-phase voltages or

phase-to-earth voltages

3 % setting or 1 V

Phase to earth voltage 5 to 75 V , step 1 V 3 % setting or 1 V Phase to phase voltage 10 to 150 V, step 1 V 3 % setting or 1 V Reset ratio 1.01 to 2.00, step 0.01 3 % setting Time delay 0.00 to 120.00 s, step 0.01 s 1 % setting or +50 ms, at 80%

operating setting

Current criteria 0.08 to 2.00 Ir 3% setting or 0.02Ir Reset time 50 ms

Overvoltage protection (ANSI 59)


Voltage connection Phase-to-phase voltages or

phase-to-earth voltages

3 % setting or 1 V

Phase to earth voltage 40 to 100 V, step 1 V 3 % setting or 1 V Phase to phase voltage 80 to 200 V, step 1 V 3 % setting or 1 V Reset ratio 0.90 to 0.99, step 0.01 3 % setting Time delay 0.00 to 60.00 s, step 0.01s 1 % setting or +50 ms, at

120% operating setting

Reset time

Technical Data

70

Synchro-check and voltage check (ANSI 25)


Operating mode Synchronization check:

Synch-check Energizing check, and

synch-check if energizing check failure

Override Energizing check:

Dead V4 and dead V3Ph Dead V4 and live V3Ph Live V4 and dead V3Ph

Voltage threshold of dead line or

bus

10 to 50 V (phase to earth), step

1 V

3 % setting or 1 V

Voltage threshold of live line or

bus

30 to 65 V (phase to earth), step

1 V

3 % setting or 1 V

V-measurement Voltage difference

1 to 40 V (phase-to-earth), steps

1 V

1V

f-measurement (f2>f1; f21; 2

Technical Data

71

time)

Circuit breaker ready supervision

time

0.50 s to 60.00 s, step 0.01 s

Dead time extension for

synch-check (Max. SYNT EXT)

0.05 s to 60.00 s, step 0.01 s

Load shedding protection


Under Frequency Load shedding

Frequency for fr =50Hz 45.50 to 50.00 Hz, step 0.01 Hz 20 mHz Time delay 0.05 to 60.00s, step 0.01 1.5 % setting or +60 ms

Under Voltage Load shedding

Voltage 50 to 110 V, step 1V 3 % setting or 1 V Time delay

0.10 to 60.00s, step 0.01 s 1.5 % setting or +60 ms, at 80% operating setting

Overload Load shedding

Phase current 0.08 to 20 A for Ir =1A

0.25 to 100 A for Ir =5A

3% setting or 0.02Ir

Time delay 0.10 to 60.00s , step 0.01 s 1.5 % setting or +60 ms, at 200% operating setting

Blocking condition

Frequency change rate f/t 1 to 10 Hz/s 0.5 Hz/s Voltage change rate u/t 1 to 100 V/s, step 1 V/s 3 % setting or 1 V Blocking voltage 10 to 120V, step 1 V 3 % setting or 1 V Blocking current 0 to 2 Ir 3% setting or 0.02Ir Operating time Approx. 60 ms

Reset time Approx. 60 ms

Under voltage blocking reset ratio Approx. 1

VT secondary circuit supervision (97FF)

Item Range or value Tolerances

Minimum current 0.08Ir to 0.20Ir, step 0.01A 3% setting or 0.02Ir Minimum zero or negative

sequence current

0.08Ir to 0.20Ir, step 0.01A 5% setting or 0.02Ir

Maximum phase to earth voltage 7.0V to 20.0V, step 0.01V 3% setting or 1 V Maximum phase to phase

voltage

10.0V to 30.0V, step 0.01V 3% setting or 1 V

Technical Data

72

Normal phase to earth voltage 40.0V to 65.0V, step 0.01V 3% setting or 1 V

Ordering

73

Pre-configure scheme of standard version

Table 4 Function and hardware of the pre-configure scheme (1)

Pre-configure scheme M01 M02 M03 M04 M05 M06 M07

Application (N1) Full TB CF F SF SF BCPU

Non-directional overcurrent protection

(50,51) 1 1

Overcurrent protection (50,51,67) 1 1 1 1 1

Non-directional earth fault protection

(50N, 51N) 1 1

Earth fault protection (50N, 51N, 67N) 1 1 1 1 1

Non-directional sensitive earth fault

protection (50Ns, 51Ns) 1 1

Sensitive earth fault protection (50Ns,

51Ns, 67Ns) 1 1 1 1 1

Neutral earth fault protection (50G,

51G) 1 1

Negative sequence overcurrent

protection (46) 1 1

Thermal overload protection (49) 1 1

Overload protection (50OL)

Overvoltage protection (59) 1 1 1 1

Under voltage protection (27) 1 1 1 1

Displacement voltage protection (64) 1 1

Breaker failure protection (50BF) 1 1 1 1

Dead zone protection (50DZ) 1 1 1 1

Synchro-check and energizing check

(25) 1 1 1 1

Auto-reclosing (79) 1 1 1 1 1

Unbalanced current protection (46NI)

Unbalanced voltage protection (46NU)


Low frequency load shedding function 1 1 1 1 1

Ordering

74

(81U)

Low voltage load shedding function

(27) 1 1 1 1 1

Overload load shedding function 1 1 1 1 1

CT secondary circuit supervision 1 1 1 1 1 1


(97FF) 1 1 1 1 1 1

Fast busbar protection using reverse

interlocking (1) (1) (1) (1) (1)

Analogue input module 1 1 1 1 1 1 1 1

Analogue input module 2 1 1 1 1 1 1 1

Binary input/output module (1) (1) (1) (1) (1) (1) 1

CPU module 1 1 1 1 1 1 1

Direct binary input and output module 1 1 1 1 1 1 1

Binary output module 1 1 1 1 1 1

Power supply module 1 1 1 1 1 1 1

Human interface 1 1 1 1 1 1 1

Case, 4U,1/2 19 1 1 1 1 1 1 1

Ordering

75

Table 5 Function and hardware of the pre-configure scheme of standard version (2)Pre-configure scheme V01 V02 C01 C02

Application (N1) V V C C

Non-directional overcurrent protection (50,51)

Overcurrent protection (50,51,67) 1 1

Non-directional earth fault protection (50N, 51N)

Earth fault protection (50N, 51N, 67N) 1 1

Non-directional sensitive earth fault protection (50Ns, 51Ns)

Sensitive earth fault protection (50Ns, 51Ns, 67Ns) 1 1


Negative sequence overcurrent protection (46)


Overload protection (50OL) 1 1

Overvoltage protection (59) 1 1 1 1

Under voltage protection (27) 1 1 1 1

Displacement voltage protection (64) 1 1 1 1

Breaker failure protection (50BF) 1 1

Dead zone protection (50DZ) 1 1

Synchro-check and energizing check (25)

Auto-reclosing (79)

Unbalanced current protection (46NI) 1

Unbalanced voltage protection (46NU) 1

Undercurrent protection (37) 1 1

Low frequency load shedding function (81U)

Low voltage load shedding function (27)

Overload load shedding function

CT secondary circuit supervision 1 1

VT secondary circuit supervision (97FF) 1 1 1 1

Fast busbar protection using reverse interlocking (1) (1)

Ordering

76

Analogue input module 1 1 1

Analogue input module 2 1 1 1 1

Binary input/output module (1) (1) (1) (1)

CPU module 1 1 1 1

Binary direct input and output module 1 1 1 1

Binary output module 1 1 1

Power supply module 1 1 1 1

Human interface 1 1 1 1

Case, 4U,1/2 19 1 1 1 1

NOTE:

n : Quantity of standard function or standard hardware, n= 1, 2, .;

(n) : Quantity of optional function or optional hardware, n= 1, 2, .;

N1: Application: Full Full functions version TB For transformer backup protection CF For complicated feeder F For feeder SF For simple feeder V For dedicated voltage protection IED C For dedicated capacitor protection IED BCPU: Feeder control and protection unit with advanced interlocking logic

Ordering

77

Pre-configure scheme of advanced version

Table 6 Function and hardware of the pre-configure scheme

Pre-configure scheme M10 L01

Application (N1) AD LS

Non-directional overcurrent protection (50,51)

Overcurrent protection (50,51,67) 1

Non-directional earth fault protection (50N, 51N)

Earth fault protection (50N, 51N, 67N) 1

Non-directional sensitive earth fault protection (50Ns, 51Ns)

Sensitive earth fault protection (50Ns, 51Ns, 67Ns) 1


Negative sequence overcurrent protection (46)


Overload protection (50OL) 1

Overvoltage protection (59) 1

Under voltage protection (27) 1

Displacement voltage protection (64) 1

Breaker failure protection (50BF)

Dead zone protection (50DZ)

Synchro-check and energizing check (25) 1

Auto-reclosing (79) 1

Unbalanced current protection (46NI)

Unbalanced voltage protection (46NU)


Low frequency load shedding function (81U) 1 1

Low voltage load shedding function (27) 1

Overload load shedding function 1

CT secondary circuit supervision

Ordering

78

VT secondary circuit supervision (97FF) 1 1

Fast busbar protection using reverse interlocking

Analogue input module 1 1

Analogue input module 2 1 1

Binary input/output module 2 2

CPU module 1 1

Direct binary input and output module 1 1

Power supply module 1 1

Front plate 1 1

Case, 4U,1/2 19 1 1

NOTE:

n : Quantity of standard function or standard hardware, n= 1, 2, .;

(n) : Quantity of optional function or optional hardware, n= 1, 2, .;

N1: Application: Full Full functions version TB For transformer backup protection CF For complicated feeder F For feeder SF For simple feeder V For dedicated voltage protection IED C For dedicated capacitor protection IED BCPU - Feeder control and protection unit with advanced interlocking logic AD Advanced version LS Advanced load shedding version

Ordering

79

Ordering code of standard version

Ordering

80

Ordering

81

Ordering

82

Ordering code of advanced version

Ordering

83

No.17~25

Analogue Input Module 1 (A)Isef +1Im (For pre-configure scheme Mxx only)I0(1A) +1Im (For pre-configure scheme Mxx only)I0(5A) +1Im (For pre-configure scheme Mxx only)

67

Slot1

No.26~35

8

Null x

3Ip(1A)+I0(5A)+2Im+4U (For pre-configure scheme Mxx only)3Ip(1A)+I0(1A)+2Im+4U

3Ip(5A)+I0(1A)+2Im+4U (For pre-configure scheme Mxx only)

3Ip(5A)+I0(5A)+2Im+4U

Slot2

M

1234

CPU module (M)Slot4

3BI (24V), 3 Ethernet RJ45 ports, 1 RS232 port, IRIG-B

3BI (24V), 2 Ethernet RJ45 ports, 2 RS485 port, 1 RS232 port, IRIG-B

Binary Input and Output module (B)Slot3

5BI (220V) + 8 relays

Null5BI (110V) + 8 relays

Slot5

5BI (220V) +8 output relays

5BI (110V) +8 output relays

Binary Input and Output module (B)

A B

12x

12

B

12

No.1~16

C S 2 1 -C 1

Analogue Input Module 2 (A)

3BI (24V), 2 Ethernet optical ports, 1 RS232 port, IRIG-B 3

Null x

Ordering

84

Address: No.9 Shangdi 4th Street, Haidian District, Beijing, P.R.C. 100085Tel: +86 10 62962554, +86 10 62961515 ext.8998

Fax: +86 10 82783625

Email:[email protected]: http://www.sf-auto.com

Date post:	15-Sep-2015
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CSC-211 Multifunction Protection IED Product Guide_V1.20.pdf

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