P12x Technical Datasheet en 0D

8/6/2019 P12x Technical Datasheet en 0D

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Directional / non DirectionalOvercurrent Protection

P120 Software Version 6CP121 Software Version 6HP122 Software Version 6GP123 Software Version 6GP125 Software Version 6FP126 Software Version 6FP127 Software Version 6F

Technical Data Sheet

This document does not replace the Technical Manual.


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P120 P121 P122 P123 P125 P126 P127 Technical DataSheet 2

Application and Scope

The MiCOM P12x relays are suitable for all theapplications where overcurrent and earth-faultprotection are required.

The P12x relays can be used for a range ofovercurrent applications from single phase/earth

fault applications, P120 (non directional), P125(directional) to three phase and earth faultapplications, P123 (non directional), P127(directional). The P127 also includes voltageprotections and relevant functions and powermeasurement.

The P12x relays provide a comprehensive suite of

overcurrent protection and automation features for

easy adaptation different operating conditions.

The typical applications are overhead lines,

underground cables and backup for HV systems in

insulated, solid, resistance and Petersen coil

earthed neutral systems, used in MV utility,Industry, transports, Generator and transformer

schemes.

For easy adaptation to varying system operatingconditions two independent setting groups areprovided.

Flexible automation functions enable accurate co-

ordination with other devices.

Three earth fault sensitivity current inputs areavailable by ordering code.1A and 5A dual rated CT inputs are available withall MiCOM P12x relays using separate terminals.Two line/phase voltage input ranges, 57-130V and220-480V, are available by ordering code.The auxiliary voltage for the power supply and thedigital inputs is a wide-range design, 24 to250 V DC and 100 to 250 V AC.The P12x relays are housed in a robust draw out4U metal case for panel or rack mounting with 20TEwidth (P120, P121, P122, P123 and P125) or 30TEwidth (P126 and P127).


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Functions overview

Functions Overview P120 P121 P122 P123 P125 P126 P127

67/50/51 Three phase directional non directional overcurrent X

50/51 Three-phase overcurrent X X X X

49 Thermal overload X X X X37 Three-phase undercurrent X X X X

46 Negative pase sequence overcurrent X X X X

67N/50N/51N Earth fault directional non directional overcurrent X X X

50N/51N Earth fault (Single-phase) overcurrent X X X X

32N Earth fault Wattmetric / Ie*cos X X X

59N Residual overvoltage X X X

27/59 Phase/Line under/ overvoltage X

79 Autoreclose X X X

Switch on to fault (SOTF) X X X

CB control Local/ remote X X X X

Phase current rotation X X

50BF Circuit breaker failure detection X X X X

Circuit Breaker Maintenance and Trip Circuit Supervision X X X X

46BC Broken conductor detection I2/I1 X X X X

Cold load pick up X X X X

86 Output relay latching X X X X X X X

Blocking Logic X X X X X X X

Selective relay scheme logic X X X X

Relay maintenance mode X X X X X

Remote control of output relays X X

Setting groups 1 1 2 2 2 2 2

Programmable AND logic X X

VT supervision (VTS) and logic application X

Auxiliary timers X X X X X

Measurements X X X X X X XPeak and rolling values X X X X

Power and Energy measurement X

Fault records X X X X

Elapsed time of protection starting X X X X

Event records X X X X

Disturbance recording X X X X

Binary inputs / output relays 2/4 2/4 3/6 5/8 4/6 7/8 7/8

AC current / voltage inputs 1/0 4/0 4/0 4/0 1/1 4/1 4/3

Modbus RTU X X X X X X X

IEC 60870-5-103 X X X X X X X

Courier X X X X

DNP3 X X X X

Setting software MiCOM S1 X X X X X


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Control and display

All functions including protection automation,

communication, LEDs, inputs and outputs can be

programmed and modified using the front panel

user interface.

The 2 line, 16 alphanumerical backlit LCD display

(available in a range of languages) provides theuser with key information (faults, measurements,

settings, etc.).

The default display can be selected by the user. It is

possible to show the phase or earth current value

by selecting Phase A, Phase B , Phase C, Earth N

(P126/7), or the four values simultaneously

(P120/1/2/3). The P125 will be able to show the

earth fault current only.

The menus have a pull-down structure for easy use

and quick access to any data.

Dedicated LEDs4 LEDs indicate the state of the relay (Trip, Alarm,

Warning, Healthy).

Acknowledgement of alarm and trip LEDs can be

easily performed locally or remotely.

Programmable LEDs

4 freely programmable LEDs are provided on all

models.

The user can assign independently each LED to

any programme function or combination of

thresholds.Keypad

A seven-button tactile keypad on the front panel

allows the user easy access to any data.

Communication RS485

All P12x series relays have a rear RS485

communications port for use with MODBUS, IEC

60870-5-103, Courier and DNP3 protocols. (Courier

& DNP3 are not available for the P125 P126 and

P127 relays). The relays can transmit to the local

monitoring system (e.g. MiCOM S10), or remotely

to the SCADA, settings, measurements and alarms,as well as fault, event and disturbance records.

All the parameters for the communications (relay

address, data rate, parity, etc.) can be set using

the front panel user interface.

Communication RS232

An RS232 front port is available in the MiCOM P12x

series.

It allows the user to download new firmware(update, language changing,...) and is also the linkwith the setting software MiCOM S1 (P122, P123,P125, P126 & P127).

The simple and powerful software interface allowsthe user easy configuration and access to allmeasurements and stored information formaintenance and post-fault analysis purposes.

Password ProtectionA four-character password is requested in order toprevent inadvertent or unauthorized changing of

settings or triggering of control functions.

Self-MonitoringComprehensive self-monitoring procedures withinthe devices ensure that internal hardware orsoftware errors are detected and do not causemalfunctions of the device. As the auxiliary voltageis turned on, a functional test is carried out. Cyclicself-monitoring tests are running during operation. Iftest results deviate from the default value then thecorresponding signal is entered into the non-volatilemonitoring signal memory. The result of the faultdiagnosis determines whether a blocking of the

protection and control unit will occur or whether awarning only is issued.


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Freely

ProgrammableLeds

BatteryRS232

Cursorkeys

Enter key

Trip Led

Alarm Led

Device fail

Power supply

Read KeyClear Key

Main Functions

The main functions are autonomous functions andcan be individually configured or disabled to suit aparticular application.The relays of these ranges comprise a full suite ofprotection functions as well as an automaticrecloser and auxiliary functions; each function canbe individually configured or disabled suiting anyparticular application.


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Three-phase Overcurrent Protection (50/51)

Earth Fault Overcurrent Protection (50N/51N)

Three independent stages are available for phaseand earth fault protection.The first and second stage can be independentlyselect as definite time delay or inverse time delaywith different types of curve (IEC, IEEE/ANSI, RI,RECT), except for P120 and P121 where thesecond stage can only be set as definite time. Thethird stage for the P122, P123, P126, P127 can bealso configured as peak detection with a definitetime delay only. Each stage and related time delaycan be programmed to provide maximumselectivity. The IDMT stages have definite orinverse time reset capability reducing clearancetimes when intermittent faults happen.In the P125, P126, P127 the 2nd and 3rd thresholdpick-up can suspend the 1st threshold output tocontrol selectivity.The MiCOM P12x relays have separateinstantaneous (start) and delayed (trip) outputs foreach stage. P126 & P127 can indicate the faultedphase(s) by configuring output relays (first stageonly). The range of earth fault current sensitivity can

be selected by ordering code.Tripping Characteristics

I>>>

t>>

I>>

t>I>

Ith

I>>> t>>>

I>>>>I>>>

t>>

I>>

t>I>

Ith

I>>> t>>>

I>>>>

Three-phase Directional Overcurrent (67)

Each of the three-phase overcurrent stages of the

P127 can be independently configured as

directional protection with specific relay

characteristic angle (RCA) settings and boundaries.

Each directional stage has instantaneous (start)

forward/reverse outputs available.

Directional Overcurrent Tripping Zone

The first and second stage can be independently

select as definite time delay or inverse time delay

with different types of curve (IEC, IEEE/ANSI, RI,

RECT). The third stage can be configured with

definite time delay only. The 2nd and 3rd threshold

pick-up can suspend the 1st threshold output to

control selectivity

The phase fault directional elements are internally

polarised by quadrature phase-phase voltages.

A synchronous polarising function is provided to

ensure correct operation of the overcurrent

FUNCTIONAL OVERVIEW

Front port Rear port

Setting

software S1RS485 port.

To setting software S1

to SCADA system

Recording

features

AUXILIARY FUNCTIONS

SOTF (Switch on to fault)CB local/RemotePhase Current RotationCB MonitoringCold Load Pick UpTrip Circuit SupervisionBlocking Logic

Selective Scheme LogicRelay maintenance ModeRemote ctrl on output relaysProgrammable AND LogicAuxiliary timersPeak and rolling demandSelf Monitoring

MEASUREMENTS

Phase CurrentDirect and inverse currentsResidual currentResidual voltageLine and phase voltageActive and Reactive PowerActive and Reactive Energy

Autoreclose countersCB mechanical operationcounter

CB electrical operationcounter

27 59

67 67N32N

50/5150N

37 46 50BFIecos 51N46BC 49

Fault record

5

Event Recording

75

Dist. Recording5 records of

79 8659N

3 sec.

Descri tion of ANSI code nos. see Functions Overview


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elements for close-up three phase faults where thecollapse of the polarising line voltages can occur.

The absolute phase angle of line voltages ismeasured every cycle and the last value is stored in

the relay memory.The polarisation discrimination voltage value is 0.6V(fixed value) for relays with a system voltage of 57to 130V and 3V (fixed value) for relays with asystem voltage of 220 to 480V.Over this value the directional relay uses standardpolarisation (the measured voltage), under thisvalue the synchronous polarisation (stored vector)is used.The synchronous polarisation is maintained up tothe restoration of an input voltage value.If the input voltage loss persists longer than 5s thedirectional overcurrent protection is blocked.

Earth-fault Directional Overcurrent (67N)Each of the three earth-fault stages of P125, P126and P127 can be configured as directionalprotection with specific characteristic angle (RCA).Each directional stage has instantaneous (start)forward/reverse outputs available.

The first and second stage can be independently

select as definite time or inverse time delay with

different type of curves (IEC, IEEE/ANSI, RI,

RECT). The third stage can be configured with a

definite time delay only. The 2nd and 3rd threshold

pick-up can suspend the 1st threshold output to

control selectivityIn addition to the residual current, the residualvoltage must be connected to a dedicated input orinternally calculated as a vector sum (P127 only) inorder to make directional operation possible.Each earth-fault directional stage measures theresidual current, the residual voltage, and the anglebetween residual voltage and current.

Wattmetric/Ie*cos protection (32N)Two additional stages are configurable with

Wattmetric or Ie*coscharacteristics. The firststage can be set with a definite time or with various

IDMT curves as the 51N and 67N. The secondstage is definite time only.

The Pe threshold setting value is automaticallycorrected selecting the rated Ie current.

The two-stages can be independently configuredwith specific characteristic boundaries. The RCAangle is common for the two stages.

Wattmetric characteristic

UnderCurrent protection (37)

MiCOM P122, P123, P126 & P127 relays provide adefinite time undercurrent protection.

This function allows typical applications such asloss of load or simple broken conductor detection.

For the P122 and P123 the undercurrent protectionstage is conditioned to the status of the CB auxiliarycontact. The stage operates when the CB is closedas indicated by a logic digital input energised viathe 52a auxiliary contact of the CB.

Thermal overloadThe thermal overload protection can be applied to

prevent damage to the electrical plant equipment

when operating at temperatures in excess of the

designed maximum withstand. A prolonged

overloading causes excessive heating, which may

result in premature deterioration of the insulation, or

in extreme cases, insulation failure.

The P122, P123, P126 and P127 relays incorporate

a current based thermal replica, using load current

to reproduce the heating and cooling of the

equipment to be protected. The thermal overload

element can be set with both alarm and trip stages.

The heating within any plant equipment, such as

cables or transformers, is of resistive type (IR x t).

Thus, the quantity of heat generated is directly

proportional to current squared (I).

The thermal time characteristic used in the relay is

based on current squared, integrated over time.

The P122, P123, P126 and P127 automatically use

the highest phase current as input information for

the thermal model.

The mathematical formula applicable is:


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=

22

22-K

lnTeTript

TripK

Where:

tTrip is the time to trip in seconds

Te is the thermal time constant of the equipment to beprotected in seconds

K is the thermal overload calculated by Ieq/k, whereIeq is the equivalent current corresponding to theRMS value of the largest measured phase currentand k is a factor associated to the thermal stateformula.

is the actual thermal status,

Trip is the trip thermal state.

An alarm stage, alarm, is provided for the initial thermalstatus.

Negative phase sequence overcurrentprotectionAny unbalanced fault condition will producenegative sequence current of some magnitude

Thus, a negative phase sequence overcurrentelement can operate for both phase-to-phase andphase to earth faults.

The MiCOM P122, P123, P126 & P127 relaysinclude a programmable function specially designedto detect unbalanced load or fault conditions. Thethree stages of negative sequence overcurrenthave the same setting ranges as the phase

overcurrent. The first stage can be independentlyselect as a definite time or inverse time delay withdifferent types of curve (IEC, IEEE/ANSI, RI,RECT).

The second and third stage can be configured witha definite time delay only.

IDMT trip and reset curvesIEC, ANSI/IEEE trip curveThe minimum guaranteed value of the operatingcurrent for all the curves with the inverse timecharacteristic is 1.1Is (with a tolerance of 0.05Is).When the first or the second stages of the phaseovercurrent protection are set to an IDMT curve, themaximum setting recommended should be 2 timesthe nominal. When the earth fault elements are setto an IDMT curve, the maximum settingrecommended should 1/20

thof the neutral CT input

rating.

( )

+

= L

II

KTt

S 1

Where:t Operation time

K Factor (see table)I Value of measured current

Is Value of the programmed threshold (pick-up value)

Factor (see table)L ANSI/IEEE constant (zero for IEC and RECT curves)T Time multiplier setting from 0.025 to 1.5

Type of curve Standard K factor factor L factorShort time inverse AREVA 0.05 0.04 0

Standard inverse IEC 0.14 0.02 0

Very inverse IEC 13.5 1 0

Extremely inverse IEC 80 2 0

Long time inverse AREVA 120 1 0

Short time inverse C02 0.02394 0.02 0.01694

Moderately Inverse ANSI/IEEE 0.0515 0.02 0.114

Long time inverse C08 5.95 2 0.18

Very inverse ANSI/IEEE 19.61 2 0.491

Extremely inverse ANSI/IEEE 28.2 2 0.1217

Rectifier protection RECT 45900 5.6 0

The RI curve has the following definition:

( )Is

I

K=t236.0

339.0

1

K setting is from 0.10 to 10 in steps of 0.05.

LABORELEC CURVES (P122, P123)The first and second earth threshold can be selected withdedicated Laborelec curves.

There are 3 curves available with the following formula :

t = a * I + b

where :

t = tripping timea and b = coefficient (see table)I = Primary residual current (between 1 and 40A)

Type of curve a b

LABORELEC 1 0.0897 4.0897

LABORELEC 2 0.0897 4.5897

LABORELEC 3 0.0897 5.0897

In order to be compliant with the Laborelec specifications

the relay must be used with :- An earth current range 0.01 Ion to 8 Ion- A rated current of 1A- A core balanced CT with a ratio 20/1.For a complete operating of the curve, the relay must beset to 0.05Ion (secondary residual current).

Reset ANSI/IEEE curve

The equation is valid for 1.1 I/Is 20.

( )

=

SII

KTt

1

Where:

t : Reset timeK : Factor (see table)


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I : Value of the measured currentIs : Value of the programmed threshold (pick-up value)

: Factor (see table)T : Reset time multiplier (RTMS) setting between 0.025

and 3.2.

Type of curve Standard K factor factorShort time inverse C02 2.261 2

Moderately inverseANSI/IEEE 4.850 2

Long time inverse C08 5.950 2

Very inverse ANSI/IEEE 21.600 2

Extremely Inverse ANSI/IEEE 29.100 2

Broken conductor detection (46BC)A typical unbalanced fault that can occur on thesystem is an open circuit fault. This fault can arisefrom a broken conductor, mal-operation of one ofthe switchgear poles, or blowing of a fuse.

MiCOM P122/3 and P126/7 relays incorporate an

element, which measures the ratio of negative topositive sequence current (I2/I1). This fullyprogrammable function allows more sensitivity andstability than pure negative sequencemeasurement.

Under / Over voltage protection (27/59)Under-voltage conditions may occur on a powersystem for increased system loading, complete lossof busbar voltage or for faults occurring on thephases the power system.

Over-voltage conditions generally happen in a lossof load condition or during an earth fault condition


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where there may be an increase of the voltagemagnitude in the healthy phases.

The P127 relay provides two independent under-voltage stages and two over-voltage stages. Theyare definite time elements.

Each stage can be configured to operate in single-

phase mode (OR mode) or three-phase mode (ANDmode). Both voltage protections operate on linevoltage (phase to phase voltage) always.

Residual over voltage (59N)P125, P126 and P127 provide an additionalresidual over-voltage stage that can be used forgeneric earth fault detection, particularly ininsulated neutral systems or as backup at thebusbar level.

The protection element has one programmablestage with definite delay time.

Autorecloser (79)Most faults on overhead line networks are transientin nature. A transient fault, such as an insulatorflashover, is a self-clearing non-damage fault. It canbe cleared by the immediate tripping of one or morecircuit breakers, and does not recur when the line isre-energised. Lightning is the most common causeof transient faults, other possible causes beingclashing conductors and wind blown debris.

The auto-recloser function is applied forautomatically reclosing of a switching device after ithas been opened due to operation of protectionwhere transient and non-permanent faults are

prevalent.

MiCOM P123, P126 and P127 relays include a 4-shot auto-recloser. All the programmed protectionfunctions can independently start any of the shotsand the user can programme which functions areallowed to trip after any of the shots. This makespossible special reclosing cycles e.g. for co-ordination with fuses in distribution systems withteed transformers.

Dead and reclaim times are freely adjustable.

A counter stores the number of recloser commands.

This information is available locally or remotely.Switch on to Fault protectionSome faults may be due to fault conditions notremoved from the feeder after a reclosing cycle ormanual tripping, or due to earthing clamps left onfollowing maintenance works. In these cases, it maybe desirable to clear the fault condition in fast time,rather than waiting for the trip delay time DT orIDMT associated with the involved protection.

Another condition is the case of manually closing ofthe CB on an existing fault. This can be considereda particularly critical situation; because the

overcurrent protection would not clear the fault until

the set operate delay had elapsed. This is anothertypical case of closing on to fault.

Hence the fastest possible clearance of the fault isdesirable in all situations.

The P122, P123, P126 and P127 relays incorporate

configurable switch on to fault protection. It provides

an instantaneous trip during a settable time afterlocal or remote manual close or after automatic

reclosing.

The SOTF function incorporates a fixed timewindow of 500 ms when the detection of the fault isenabled.

A further programmable timer is available.

Circuit breaker failure protection (50BF)Following the inception of a fault, one or more mainprotection devices will operate and issue a tripoutput to the circuit breaker(s) associated with the

faulted circuit.The circuit breaker failure protection verifies theeffective opening of the CB by a dedicatedundercurrent threshold isolating the fault andpreventing damage or further damage to the powersystem.

The 50BF protection in the P122, P123, P126 andP127 can be activated by trip of a genericprotection or/and external command by the relevantdigital input associated to the label Strt. tBF.The Circuit breaker failure protection can also beused for tripping upstream circuit breakers.

The circuit breaker failure provides the possibility toblock the instantaneous I> and Ie> thresholds whena 50BF signal is emitted. This allows more flexibilityin the fault localisation and isolation with blockingschemes.

Phase current rotationIn some applications there is a need to match theplant phase sequence with the connected relaywithout changing the cabling. The P122 and P123relays include the phase rotation feature that allowsthe setting of the phases in clockwise or in anti-clockwise rotation.(ABC or ACB sequence).

Blocking logicWhen the MiCOM P12x and P12y relays are usedin critical networks, management of protectionrelays must take surrounding devices intoconsideration.

Two blocking logic inputs can be configuredindependently of each other to block anycombination of the selected elements (i.e. current orvoltage stages, thermal replica, etc).

A typical application is to use a dedicated digitalinput to block the time delay settings of phase/earth

fault protection in a relay in response to the


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phase/earth fault start condition of a downstreamrelay.

This function allows the MiCOM relays to clear thefault fast and correctly when used in a cascadescheme.

Selective relay scheme logic

The P122/3 and P126/7 relays include selectiverelay scheme logic.

A dedicated digital input can temporarily alter thetime delay settings in response to the phase/earthfault start condition of a downstream relay. Thisfunction allows the MiCOM relays to clear the faultfast and correctly when used in a cascade scheme.

Local/remote ControlIn the P123, P125, P126 and P127 one logic inputassociated to the label LOCAL MODE is dedicatedto this feature. If this logic input is powered, all theremote communications (setting parameters,

control command....) will be forbidden to avoid amal-operation during a local operation.

The time synchronization via the network staysactive because there is no effect on the outputrelays.

Circuit Breaker Monitoring and SupervisionCircuit-breaker preventative maintenance is theadvanced function provided by the MiCOM P122,P123, P126 and P127 relays with adjustable closingand opening time measurements. All phase

currents (I or I2 ) are accumulated to inform aboutthe total interrupted fault current.

MiCOM P122 P123 P126 and P127 relays allow tripcircuit supervision via a specific input associated tothe label Trip Circ. The result of this monitoring canbe viewed locally or remotely.

Cold Load Pick upWhen a feeder is energised, the current levels thatflow for a period of time following energisation maydiffer greatly from the normal load levels.Consequently, overcurrent settings that have beenapplied to give short circuit protection may not besuitable during this period.

The Cold Load Pick-up (CLP) logic included in theP122, P123, P126 & P127 relays raises the settingsof selected protection stages for a setting time ofthe tCL timer initiated via a dedicated logic input

associated to the label Cold L PU,This allows the protection settings to be set closerto the load profile by increasing settings afterenergisation automatically.

Cold-load characteristics

Inputs and OutputsThe P12x relays include freely configurable digitalinputs and output relays for CB control andsignalling.Each input can be configured as active high oractive low and the supply type can be chosen asDC or AC by the ordering code.

Any input can be configured for blocking, selectivelogic, control, etc. by the label associated to thespecific function.

Each instantaneous and delayed trip is assignableto any output relays and to the led on the frontpanel. To the trip relay (relay 1) only the delayedtrip of the protections and some accessory functionare assignable.

Voltage controlled overcurrent 51V and Voltage

Transformer Supervision (VTS)

The logical functionality includes the possibility toprovide the 51V function controlled by undervoltageV< (27) and negative sequence overvoltage V2>(47).


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(U)&I>> ?NO

YES

BlocksI>>threshol

V

VTS

&

1 1

&

1 1

NO

YESV>

VTS Blocks 51V.YES

NO

BlocksI>>>threshol

VTSAlarm

1

1

VTS

0

NO

YES

BlocksI>>threshol

V

VTS

&

1 1

&

1 1

NO

YESV>

.YES

NO

BlocksI>>>threshol

VTSAlarm

1

1

0

(U)&I>>> ?

YESYES

NO

VTSAlarmVTSAlarm ?

The 51 function is supervised by voltagetransformer supervision (VTS).VTS logic: VTS = [(V2>0.3Vn) AND (I2


13/30


All the measured and derived values can bedisplayed on the front panel LCD or transferredlocally or remotely on user request.For the complete list of the available measurementsrefer to the technical data in other part of thisdocument.

Protection start recordsFive protection start records are stored in theMiCOM P122, P123, P126 & P127 relays.Each instantaneous (start) record includes: instantaneous (start) time (date & duration) origin (phase & earth thresholds)Start records give the user useful information forpreventative maintenance of the electrical system.

Event recording75 logic events are stored in the MiCOM P122,P123, P126 and P127 relays. Events includeinputs/outputs, state changes, alarms and contact

operations.All events are time-tagged to 1ms.

Fault recordsFive faults are stored inside the relays. Each record

includes:

Fault indicators

Value of the available measurements for each

relay

Tripping time

Fault indications help the user to clearly identify the

cause of the fault and monitor the P122, P123,

P126 and P127 settings.

Disturbance recordingCurrent waveforms are captured by the P122,

P123, P126 and P127 relays. Up to 3 seconds of

records are stored inside the relays for each fault

memorised in the relay. The disturbance recording

function is triggered either by any of the

programmed thresholds or by an external input, or

through the communications.

All the logic and analogue information are stored in

memory and can be transferred to an external data

analyser by the front communication port or the rear

port by an appropriate protocol.

Device Identification, Ports

The front of the relay has two flaps. The upper flapidentifies the product name. It can be raised toaccess the product model number, serial numberand ratings.

Under the lower flap there is a 9 pin RS232 portand a Lithium backup battery (P122, P123, P126and P127).

The RS232 port can be used for relay setting andfor the software upgrade.

To guard the lower cover against unauthorizedopening it is provided with a facility for fitting asecurity seal.

Battery Box (MiCOM E1)

The external accessory MiCOM E1 is available ondemand. It can be connected to the RS232 frontport and performs the functions to supply part of therelay circuits when the auxiliary power supply is off.This allows the user to retrieve data or modifyparameters from the local HMI or by the settingsoftware MiCOM S1,

Case

For all MiCOM P12x the units have a draw outmetal 4U case high.The width is 20TE for the P120 P121 P122 P123P125, 30TE for the P126 and P127.All CTs inputs are short-circuited if the active unit iswithdrawn from the case.All P12x relays can be panel or rack mounted.

Wiring

External connections are made via MIDOS typeterminal blocks.Each connection includes two 6.35mm Fast on andone M4 screw fixing.

The wiring for all the MiCOM P120, P121, P122,P123, P125, P126 and P127 relays is standard toprovide maximum compatibility.


14/30


Technical DataGeneral DataDesignCase Height: 4U (177mm)

MiCOM P120 /1/2/3/5 20 TE

MiCOM P126/7 30 TE

Weight:

P120/1/2/3/5 approx. 3.0 KgP126/7approx. 4.0 Kg

MountingRack or flush mounting

ConnectionsRear, (double fast on + M4 screw per connection)

Full draw-out with automatic CT shorting in the case of

the relay

Enclosure protectionFront Panel: IEC 529: IP 52 and IK 07

Rear connection: IP 10

DimensionsSee dimensions diagram.

PC InterfaceDIN 41652 connector (X6),type D-Sub, 9-pin.

Environmental ConditionsRecommended Ambient temperature rangePer IEC 60255-6: 1988

Operating temperature range:

-25C to 55C (or 13F to 131F)

-25C to 70 (*) (or 13F to 158F(*))Storage and transit:

-25C to 70C (or 13F to 158F)

(*) The upper limit is permissible for a single 6 hour

duration within any 24 hour period.Ambient Humidity RangePer IEC 60068-2-3: 1969:

56 days at 93% relative humidity and +40 CPer IEC 60068-2-30: 1980:

Damp heat cyclic, six (12 + 12) hour cycles, 93% RH,+25 to +55 C

Solar RadiationAvoid exposure of the front panel to direct solar radiation.

MECHANICAL ENVIRONMENTVibration Test

IEC 60255-21-1, class 2.

Shock and Bump TestIEC 60255-21-2, class 1.

Seismic TestIEC 60255-21-3, Class 2.

PRODUCT SAFETY

72/23/EEC

Compliance with European Commission Low VoltageDirective. Compliance is demonstrated by reference togeneric safety standards:EN61010-1: 1993/A2: 1995

EN60950: 1992/A11: 1997

Type TestsInsulationPer IEC 60255-5: 2000,

Insulation resistance > 100M at 500Vdc(Using only electronic/brushless insulation tester).

High Voltage (Dielectric) Withstand(i) Per IEC 60255-5: 2000, 2 kV rms AC, 1 minute:

Between all case terminals connected together, and thecase earth, and between all terminals of independentcircuits (RS232 ports excepted).1kV rms AC for 1 minute, across open watchdogcontacts.1kV rms AC for 1 minute, across open contacts ofchangeover output relays.

Impulse Voltage Withstand TestPer IEC 60255-5: 20001.2 / 50 s, peak value: 5 kV, 0.5J

Between all terminals, and all terminals and case earth.

Electromagnetic Compatibility (EMC)

1 MHz Burst Disturbance Test

IEC 61000-4-12, Class 3

Immunity to Electrostatic DischargePer IEC 60255-22-2: 1996, Class 3 and 4

Electrical Fast Transient bursts

IEC 60255-22-4 class 4.

IEC 61000-4-4 class 4.

Immunity to Radiated Electromagnetic field

IEC60255-22-3 class 3.

IEC61000-4-3 class 3.

Surge Immunity Test

IEC 61000-4-5, class 4.Immunity to Conducted Disturbances Inducedby Radio Frequency Fields

4 IEC 61000-4-6, class 3.

Power Frequency Magnetic Field Immunity

IEC 61000-4-8, class V.

EMC compliance

89/336/EEC

93/31/EEC

Compliance with European Commission EMC Directive.Generic standards were used to establish conformity:

EN50081-2: 1994EN60952-2: 1995


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RatingsAC Measuring InputsNominal frequency: 50 and 60 Hz (settable)Operating range: from 45 Hz to 65 Hz

AC CurrentNominal current (In): 1A and 5A dual ratedEarth nominal current 1A and 5A dual rated

Nominal burden per phase: < 0.025 VA (1A)< 0.3 VA (5A)

Nominal burden per earth: < 0.008 VA at 0.1Ien (1A)< 0.010 VA at 0.1Ien (5A)

Continuous withstand: 4 Infor 2 s: 40 Infor 1 s: 100 In

AC VoltageVoltage input range Un 57 to 130VMeasuring range 0 to 260V

Burden per phase: 0.08W at 100/3 VContinuous withstand: 260V ph-ph10 seconds 300V ph-phVoltage input range Un 220 to 480V

Measuring range 0 to 960VBurden per phase: 0.55W at 480VContinuous withstand: 960V ph-ph10 seconds: 1300V ph-ph

Power Supply

Nominal auxiliaryvoltage Vx

24-60VDC; 48-150VDC;130-250VDC100-250VAC 50/60Hz125-250VDC/100-250VAC(special application)

Operating rangeDC 20% of VxAC 20%, +10% of Vx

Aux Supply ripple Up to 12%

Stored energy time 50 ms for interruption of Vx

Burden

P120/1/2/3/4/5

Stand by:


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Protections functionsSettingsPhase overcurrent [67/50/51](P120, P121, P122, P123, P125, P126, P127)Range 0.1 to 40 InI>: 0.1 to 25 InI>>: 0.5 to 40 InI>>>: 0.5 to 40 In

Setting Step 0.01InIf I> or I>> are set to IDMT operation, the maximumrecommended setting should be 2x In to give a fulloperating curve.

P127 in directional modeRelay characteristic angle RCA-Torque angle for eachstage 0 to 359

Trip zone for each stage 10 to 170Trip delay timeDT for: tI>, tI>>, tI>>> 0 to 150 s in steps of 0.01sIDMT for I> and I>> (except P120, P121)

IEC, ANSI/IEEE, RI and RECT curveTMS 0.025 to 1.5 in steps of 0.025Reset time for DT on I>,I>>: (P120/1/2/3)

0 to 600 sec in steps of 0.01InReset time for IDMT for P120/1 onlytI> , tI>> fixed 50 msReset time for P122 & P123tI>, tI>> with IEC curve:

0.04 to 100s in steps of 0.01stI>, tI>> with ANSI/IEEE curve:

0.04 to 100 s in steps of 0.01sRTMS: 0.025 to 3.2 in steps of 0.025Reset time for P126 & P127tI>, tI>> with IEC curve:

0 to 100 s in steps of 0.01stI>, tI>> with ANSI/IEEE curve:RTMS: 0.025 to 3.2 in steps of 0.025

DT: 0.00 to 100s in steps of 0.01s

Earth fault overcurrent [67N/50N/51N](P120, P121, P122, P123, P125, P126, P127)Range: 0.1 to 40 Ien0.1 to 40 IenIe> from 0.1 to 25 IenIe>>, Ie>>> from 0.5 to 40 IenSetting Step: 0.01IenIf Ie> or Ie>> are set to IDMT operation, the maximumrecommended setting should be 2x In to give a fulloperating curve.

Range: 0.01 to 8 IenIe> from 0.01 to 1 Ien

Ie>>, Ie>>> from 0.01 to 8 IenSetting Step: 0.005 IenIf Ie> or Ie>> are set to IDMT operation, the maximumrecommended setting should be 0.4x In to give a fulloperating curve.

Range:0.002 to 1 IenIe>, Ie>>, Ie>>> from 0.002 to 1 IenSetting steps 0.001 IenIf Ie> or Ie>> are set to IDMT operation, the maximumrecommended setting should be 0.05x In to give a fulloperating curve.

P125/6/7 directional modeRelay characteristic angle RCA-Torque angle for each

stage 0 to 359Trip zone for each stage 10 to 170

Ue>, Ue>>, Ue>>> for 57 to 130V version:1V to 260V in steps of 0.1V

Ue>, Ue>>, Ue>>> for 220 to 480V version:4V to 960V in steps of 0.5V

Earth fault current trip delay time:DT for tIe>, tIe>>, tIe>>> 0 to 150 s in steps of 0.01sIDMT for Ie> and Ie>> (except for P120, P121)

IEC, ANSI/IEEE, RI and RECT curve

TMS 0.025 to 1.5 in steps of 0.025Reset time for DT on Ie>,Ie>>: (P120/1/2/3)0 to 600 sec in steps of 0.01In

Reset time for IDMT for P120/1 onlytIe> , tIe>> fixed 50 msReset time for P122 & P123tIe>, tIe>> with IEC curve:

0.04 to 100s in steps of 0.01stIe>, tIe>> with ANSI/IEEE curve:RTMS: 0.025 to 3.2 in steps of 0.025DT: 0.04 to 100 s in steps of 0.01sReset time for P125, P126 & P127tIe>, tIe>> with IEC curve:

0 to 100 s in steps of 0.01stIe>, tIe>> with ANSI/IEEE curve:

RTMS: 0.025 to 3.2 in steps of 0.025DT: 0 to 100 s in steps of 0.01sFor the range 0.002 to 1Ien a Laborelec curve is availablefor the P122 & P123 only.

Wattmetric /Iecos earth fault [32N] (P125, P126, P127)The setting value has to be multiplied by Ien for 32N only(I.e. Ien=5A Pe>: 2.00 x 5 W. your setting is 10W)

Range:0.1 to 40 Ienvoltage range 57 to 130VPe>, Pe>> 10 to 800 WSetting Step: 1 Wvoltage range 220 to 480V

Pe>, Pe>> 40 to 3200 WSetting Step: 5 WIe cos> 0.1 to 25 IenIecos>> 0.5 to 40 IenSetting Step: 0.01 Ien

Range:0.01 to 8 Ienvoltage range 57 to 130VPe>, Pe>> 1 to 160 WSetting Step: 0.1 Wvoltage range 220 to 480VPe>, Pe>> 4 to 640 WSetting Step: 0.5 WIe cos> 0.01 to 1 IenIecos>> 0.01 to 8 IenSetting Step: 0.005 Ien

Range:0.002 to 1 Ienvoltage range 57 to 130VPe>, Pe>> from 0.2 to 20 WSetting Step: 0.02 Wvoltage range 220 to 480VPe>, Pe>> from 1.0 to 80 WSetting Step: 0.01 WIe cos> from 0.002 to 1 IenIecos>> from 0.002 to 1 IenSetting Step: 0.001 Ien

Relay characteristic angle RCA-Torque angle for each ofthe Pe/Iecos elements 0 to 359Setting step 1


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Trip Zone : +/- 80DT for: tPe>, tPe>>, Iecos>, Iecos>> 0 to 150 sIDMT for Pe> and Iecos>

IEC, ANSI/IEEE, RI and RECT curveTMS 0.025 to 1.5 in steps of 0.025Reset timetIPe>, tIecos> with IEC curve:

0 to 100 s in steps of 0.01s

tIPe>, tIecos> with ANSI/IEEE curve:RTMS: 0.025 to 3.2 in steps of 0.025DT: 0 to 100 s in steps of 0.01s

Negative Sequence [46] (P122, P123, P126, P127)P126 & P127:I2> 0.1 to 25 InI2>> 0.5 to 40 InI2>>> 0.5 to 40 InSetting Step 0.01InP122 & P123:I2> 0.1 to 40 InI2>> 0.1 to 40 InSetting Step 0.01In

If I2> is set to IDMT operation, the maximumrecommended setting should be 2x In to give a fulloperating curve.

DT for: tI2>, tI2>>, tI2>>> 0 to 150 s in steps of 0.01sIDMT for I2>

IEC, ANSI/IEEE, RI and RECT curveTMS 0.025 to 1.5 in steps of 0.025Reset time P122, P123, P126, P127tI2> with IEC curve:

0.04 to 100 s in steps of 0.01stI2> with ANSI/IEEE curve:RTMS: 0.025 to 3.2 in steps of 0.025DT: 0.04 to 100 s in steps of 0.01s

Thermal Overload element [49])(P122, P123, P126, P127)

I> 0.1 to 3.2 In steps of 0.01InTe 1 to 200mn in steps of 1mnK 1 to 1.5 in steps of 0.01

Trip 50% to 200% in steps of 1% Alarm 50% to 200% in steps of 1%

Three phase undercurrent [37](P122, P123, P126, P127)I< (P122 P123) 0.02 to 1 In steps of 0.01I< (P126 P127) 0.1 to 1 In steps of 0.01DT for: tI< 0 to 150 s in steps of 0.01s

Phase/line under voltage [27] (P127)

Nominal Voltage range 57 130VU< AND/OR/OFFU< 2 to 260V in steps of 0.1VU 2 to 260V in steps of 0.1VNominal Voltage range 220 480VU> AND/OR/OFFU> 10 to 720V in steps of 0.5VU>> AND/OR/OFF

U>> 10 to 960V in steps of 0.5VDT for tU>, tU>> 0 to 600 s in steps of 0.01

The setting OR / AND in the stages means:OR: trip by start of one or two or three phaseAND: trip by start of three phases.

Residual over voltage [59N] (P125, P126, P127)Nominal Voltage range 57 130VUe>>>> 1 to 260V in steps of 0.1VNominal Voltage range 220 480VUe>>>> 5 to 960V in steps of 0.5VDT for t Ue>>>> 0 to 600 s in steps of 0.01

Autoreclose [79] (P123, P126, P127)Settings:

Autoreclose settingsExt CB Fail? NO YES

Ext CB Fail Time 000.01 ms 600, 00 sec 0.01 sec

Ext Block? NO YES

tD1 000.01 sec 300, 00 sec 0.01 sec

tD2 000.01 sec 300, 00 sec 0.01 sec

tD3 000.01 sec 600, 00 sec 0.01 sec

tD4 000.01 sec 600, 00 sec 0.01 sec

Reclaim Time tR 000.02 sec 600, 00 sec 0.01 sec

Inhibit Time tI 000.02 sec 600, 00 sec 0.01 sec

Phase Cycles 0 4 1

E/Gnd Cycles 0 4 1

CyclestI>

43210000

43212222

0/1/2

CyclestI>>

43210000

43212222

0/1/2

CyclestI>>>

43210000

43212222

0/1/2

CyclestIe>

43210000

43212222

0/1/2

CyclestIe>>

43210000

43212222

0/1/2

CyclestIe>>>

43210000

43212222

0/1/2

Cycles (P126/7)tPe/Iecos>,

43210000

43212222

0/1/2

Cycles (P126/7)tPe/Iecos>>

43210000

43212222

0/1/2

CyclestAux1

43210000

43212222

0/1/2

CyclestAux2

43210000

43212222

0/1/2

The settings 0, 1 and 2 means:0 = means that any trip of the threshold is considered a

final trip. The autoreclose is not initiated.1 = trip on threshold pick up, followed by the programmed

reclosing activity2 = no trip on threshold pick up, whatever has been set in

the any trip control menu. With this setting after theReclaim time is expired, the autoreclose is ready for anew sequence.

The recloser runs for 4 reclosing cycles


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Automation and accessory functionsTrip commandEach of the protection function outputs (after a timedelay, e.g. tI>), auxiliary timers, and logic equations canbe assigned to the trip command (relay 1).

Latch functionsEach of the protection function outputs (after a timedelay, e.g. tI>), auxiliary timers and CB fail can be latchedin P120, P121, P122, and P123.

Latch output relaysThe output relays that can be latched are as follows:P120: latching relays not availableP121: relay 2 to 4P122: relay 2 to 6P123: relay 2 to 8P125: relay 1 to 6P126, P127: relay 1 to 8

Circuit breaker failure detection [50BF] (P122, P123,P126, P127)I< CB 0.02 to 1In in steps of 0.01Int BF (P126, P127) 0 to 10 s in steps of 0.01 s

t BF (P122, P123) 0.03 to 10 s in steps of 0.01 sBlock on I> Yes/NoBlock on Ie> Yes/No

Blocking logic (P120 P121 P122. P123, P125, P126,P127)The stages locked by a digital input associated to thelabel Blk. Log1/2 are for the P12x :I>. I>>, I>>>, Ie>, Ie>>, Ie>>>, I2>, I2>>, Thermal ,Brkn. Cond., t Aux1, t Aux2, tAux3, tAux4.In addition for the P125/6/7 are :tPe/Iecos> , tPe/Iecos>, tI>>, tUe>>>>.For the P127 only: tU>, tU>>, tU, tI>>>, tIe>, tIe>>, tIe>>>.t sel: 0 to 150 s in steps of 0.01 s

Broken conductor (46BC) (P122, P123, P126, P127)Ratio I2/I1 20% to 100% in steps of 1%t BC 0 to 14400 s in steps of 1 s

Cold load pick up (P122, P123, P126, P127)Level (P126 P127) 100% to 500% in steps of 1%Level (P122 P123) 20% to 500% in steps of 1%t CL 0.1to 3600 s in steps of 0.1 s

The involved stages are:I>, I>>, I>>>Ie>, Ie>>, Ie>>>

I2>, I2>>, I2>>>I2>>>: in P126 P127 onlyt Therm.

Voltage controlled overcurrent [51V] (P127)Voltage range: 57 to 130VBlock of I>> = (U< OR V2>) & I>>V2 > 3V to 200V in steps of 0.1VBlock of I>>> (U)&I>>>V2 >> 3V to 200V in steps of 0.1V

Voltage range: 220 to 480VV2 >, V2>> 20V to 720V in steps of 0.5V

Voltage transformer supervision [VTS] (P127)VTS blocks 51V Yes/No

VTS Alarm Yes/No

CB supervision and control (P122, P123, P126, P127)Trip circuit supervisionCB supervision timet SUP 0.1 to 10 s in steps of 0.01 s

CB open/close supervision timeCB open sup. time 0.05 to 1 s in step of 0.01 sCB close sup. time 0.05 to 1 s in step of 0.01 s

CB trip operations stagesCB trip mechanical operations 0 to 50000 in steps of 1

CB trip electrical operations an

0 to 4000 Exp6 in steps 1 E6

CB trip electrical operationsexpn: 1 to 2 in steps of 1

CB open time and close time controlCB open control time 0 to 5 s in step of 0.01 sCB close control time 0 to 5 s in step of 0.01 s

Auxiliary timers (P122, P123, P125, P126, P127)tAux1, tAux2, t Aux3, t Aux4:

0 to 200 s in steps of 0.01 s

Programmable AND logic (P126, P127)

For each equation there is:T operate 0 to 600 s in steps of 0.01 st Reset 0 to 600 s in steps of 0.01 s

Disturbance Recording (P122, P123, P126, P127)Pre-time 0 to 3 s in steps of 0.1sPost -time 0 to 3 s in steps of 0.1sPre-time + Post-time = 3 sec. maximumTrigger for disturbance ON Inst. or ON TripStart on digital input labelled as Strt dist.

Time peak value (P122, P123, P126, P127)Windows time 5min, 10min, 15min, 30min, or 60min

Rolling demand (P122, P123, P126, P127)Sub period 1 to 60 mn in steps of 1 mn

Num sub period 1 to 24 in steps of 1

Configuration parametersVT connections (P127)3 phase to neutral (UA, UB, UC) 3VpnUe is calculated: Ue = (UA+UB+UC)/32 phase to neutral and residual voltage (UA,UB,Ur)

2Vpn + Vr2 phase to phase and residual voltage (UAB,UBC,Ur)

2Vpp + VrVT connections (P125, P126)Residual voltage Vr

Display (P125, P126, P127)

Default display IA or IB or IC or INDisplay (P120, P121)Default display A or B or C or N

L1 or L2 or L3 or ER or S or T or G

Display (P122, P123)A or B or C or N or IA, IB,IC,IN

L1 or L2 or L3 or E or L1, L2, L3, ER or S or T or G or R, S, T, G


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Transformer RatioPhase CTsPrimary : 0 to 9999 ASecondary 1A or 5 AEarth CTsPrimary : 0 to 9999 ASecondary 1A or 5 APhase Voltage VTs

P127 Ordering code A (57 to 130V)Primary nominal (phase to phase) 0.10 to 1000.00 kVSecondary (phase to phase) 57 to 130VP127 Ordering code B (220 to 480V)Direct input (phase to phase) 220 to 480 VResidual Voltage VTsP125, P126, P127 Ordering code A (57 to 130V)Primary 0.10 to 1000.00 kVSecondary 57 to 130VP125, P126, P127 Ordering code B (220 to 480V)Direct input 220 to 480 V

Other configurations

Phase rotation (P122 P123)

Phase rotation P122 P123: A-B-C or A-C-B

Group select (P122, P123, P125, P126, P127)Change Group on Input labeled: change set

EDGE or LEVELSetting Group 1 or 2

Alarms(P122, P123, P125, P126, P127)Inst. Self-reset ? Yes or NoReset led on fault ? Yes or NoAlarm Battery? Yes or No

Digital Inputs configurationEach of the digital inputs can be set as:Active high (rising edge/high level)

or Active low (falling edge/low level)P120 and P121 have two inputs.P122 has three inputs.P123 has five inputs.P125 has four inputs.P126 and P127 have seven inputs.

The voltage for digital inputs is DC or AC selectable,depending from the model; see ordering code tables.

Relay Maintenance modeRelays maintenance mode P122 P123 P125 P126P127P122 P125 relays 65W(*)4321P123 P126 P127 Relays 8765W(*)4321

(*) watch dog relay

Measurement rangeIA, IB, IC with Sec. max 40 In x CT prim. max 9999:

0 to 400 kA by step of 0.01 AUA,UB,UC (Un = 57..130 V) with Sec max 260 x VT prim.Max 1 MV / VT sec. min 57:

0 to 4.56 MV by step of 0.01 VUA,UB,UC (Un = 220...480 V) with Sec max 960:

0 to 960 V by step of 0.01 V

UAB,UBC,UCA (Un = 57..130 V) with 2 x VA, VB or VCmax if angle = 180between 2 phases:

0 to 9.12 MV by step of 0.01 V

UAB,UBC,UCA (Un = 220..480 V) with 2 x VA, VB or VC

max if angle = 180between 2 phases:

0 to 1.92 kV by step of 0.01 V

Ie (0.1 to 40 Ien) with Sec. max 40 Ien x CT prim. max

9999: 0 to 400 kA by step of 0.01A

Ie(0.01 to 8 Ien) with Sec. max 8 Ien x CT prim. max

9999 0 to 80 kA by step of 0.01A

Ie (0.002 to 1 Ien) with Sec. max 1 Ien x CT prim. max

9999 0 to 10 kA by step of 0.01A

Ue (Uen = 57..130 V) with Sec max 260 x VT prim. Max1 MV / VT sec. min 57 0 to 4.56 MV by step of 0.01 V

Ue (Uen = 220...480 V) with Sec max 960:

0 to 960 V by step of 0.01 V

Pe Power (0.1 to 40 Ien, Uen = 57..130 V) with (Ie max

400 kA x Ue max 4.56 MV) 0 to 1824 GWby step of 1 W

Pe Power (0.01 to 8 Ien, Uen = 57..130 V) with Ie max

80 kA x Ue max 4.56 MV 0 to 365 GW by step of 1 W


10 kA x Ue max 4.56 MV 0 to 45.6 GW by step of 1 W


400 kA x Ue max 960 V 0 to 384 MW by step of 1 W


80 kA x Ue max 960 V 0 to 76.8 MW by step of 1 W


10 kA x Ue max 960 V 0 to 7.7 MW by step of 1 W

Angle Ie^Ue 0 to 359Active Power 0 to 9999 GWReactive Power 0 to 9999 GVarPower factor 0 to 1Active Energy Power 0 to 4200 GWhReactive Energy Power 0 to 4200 Gvarh

Further:I1, I2, Ratio I2/I1,Thermal status (resettable)

Max & Average (resettable)

Max IA Rms, Max IB Rms, Max IC RmsAverage IA Rms, Average IB Rms, Average IC Rms

Recloser operations counters (resettable)Total Recloses, Cycle 1, Cycle 2, Cycle 3, Cycle 4Total Trip & Lockout


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Communication

ModBus protocolP120 P121 P122. P123, P125, P126, P127Baud Rate:

300, 600, 1200, 2400, 4800, 9600, 19200, 38400 bdParity Even/Odd/NoneStop Bits 1 or 2R4elay Address 1 to 255

IEC 60870-5-103P120 P121 P122. P123, P125, P126, P127Baud Rate

300, 600, 1200, 2400, 4800, 9600, 19200, 38400 bdRelay Address 1 to 255

DNP3.0P120 P121 P122. P123Baud Rate:

300, 600, 1200, 2400, 4800, 9600, 19200, 38400 bdParity Even/Odd/NoneStop Bits 1 or 2Relay Address 1 to 255

CourierP120 P121 P122. P123Relay Address 1 to 255

CT/VT requirementPhase inputs Typical 5VA 5P10Earth inputs Core balanced CT or residualPhase input Typical Protection VTResidual voltage input

Residual voltage input Typical protection VT or Open Delta VT

Accuracy

Element Deviation Trigger Reset Time deviationPhase overcurrent elementsP120/1/2/3/6/7

2% DT: Is 2%IDMT: 1.1Is 2%

0.95 Is 2%1.05 Is 2%

2% +2050ms5% +2050ms

Relay characteristic angle RCA(RCA-Torque angle) P125/6/7

3

Trip zone P125/6/7 3Earth fault overcurrent elementsP121/2/3/6/7

2% DT: Ies 2%IDMT: 1.1Ies 2%

0.95 Ies 2%1.05 Ies 2%

2% +2050ms5% +2050ms

Wattmetric earth fault elementsP125/6/7

4% error on cos DT: Pes accuracyIDMT: 1.1Pes

accuracy

0.95 Pes

accuracy1.05 Pes

accuracy

2% +3050ms5% +3050ms

IeCosearth fault overcurrent elementsP125/6/7

2% error on cos DT: IeCos accuracyIDMT: 1.1 IeCos accuracy

0.95 IeCos accuracy1.05 IeCos accuracy

2% +3050ms5% +3050ms

Negative sequence phaseovercurrent elementsP122/3/6/7

2% DT: I2s 2%IDMT: 1.1I2s 2%

0.95 I2s 2%1.05 I2s 2%

2% +2050ms5% +2050ms

Phase undercurrent elementP122/3/6/7

2% DT: I< 2% 1.05 I< 2% 2% +2050ms

Broken conductorP122/3/6/7

3% DT: I2/I1 3% 0.95 I2/I1 3% 2% +2050ms

Thermal overloadP122/3/6/7

3% IDMT: I> 3% 0.97 I>3% 5% +2050ms (ref.IEC 60255-8)

OvervoltageP127 2% DT: Us 2% 0.95 Us 2% 2% +2040ms

UndervoltageP127

2% DT: Us 2% 1.05 Us 2% 2% +2040ms

Derived residual overvoltageP125/6/7

2%or 1V

DT: Urs 2% 0.95 Urs 2% 2% +2040ms

Auxiliary Timers 2% +10...20 msTimers of logic functions 2% +10...20 msAutoreclosing Timers 2% +10...20 ms


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Dimension

case 20 TE

case 30 TE

Figure Dimensional drawings


22/30


Wiring Connections

Typical application diagram P120 P121


23/30


Typical application diagram P122 P123


24/30


Typical application diagram P125


25/30




26/30




27/30


Guide Form SpecificationMiCOM P120 P121 P122 P123

Phase and earth numerical overcurrent relay indrawout 4U metal case.

The following functions are available:

3 independent phase stages (instantaneous and

tine-delayed) 50/51 3 independent earth stages (instantaneous and

time-delayed) 50N/51N

Tripping curves type IEC (short time inverse,standard inverse, very inverse, extremelyinverse, long time inverse) and IEEE/ANSI (shorttime inverse, moderately inverse, inverse, veryinverse, extremely inverse)

LABORELEC curves

Rectifier curve

Negative sequence overcurrent - 46

Undercurrent - 37

Thermal overload - 49

Output relay latching - 86

Broken conductor detection

4 shot autorecloser - 79

Circuit breaker failure detection - 50 BF

Circuit breaker monitoring

Trip circuit supervision

The relay provides complete measurements andrecording functions including:

True RMS values

Event recorder with the last 75 events, 1mstime-tagged.

Fault recorder with the last 5 faults

Instantaneous recorder with the last 5instantaneous starts

Disturbance recorder with storage of 5 recordsfor 3 seconds each

User interface includes:

A 32-character backlit display

Programmable LEDs

A front panel EIA RS232 for local settings

A EIA RS485 rear port compatible withMODBUS, Courier, IEC 60870-5-103, or DNP3

An easy to use PC setting software

MiCOM P125 P126 P127

Phase and earth numerical directional nondirectional overcurrent relay in drawout 4U metalcase.

The following functions are available:

Directional / non Directional Phase Overcurrent

Directional / non Directional earth faultovercurrent relay in drawout 4U metal case.

The following functions are available :

3 independent phase thresholds (instantaneousand delayed) 67/50/51

3 independent earth faultthresholds (instantaneous anddelayed) 67N/50N/51N

2 Wattmetric Pe/Iecos earth fault thresholds 32N

Tripping curves type IEC (short time inverse,standard inverse, very inverse, extremelyinverse, long time inverse) IEEE/ANSI (short

time inverse, moderately inverse, inverse, veryinverse, extremely inverse), RI and RECT

3 Negative phase sequence overcurrentthresholds 46

Undercurrent - 37

2 Thermal overload thresholds 49

2 Phase Overvoltage thresholds 59

2 Phase Undervoltage thresholds 27

1 Residual Overvoltage thresholds 59N

Output relay latching 86

Broken conductor detection

4 shot auto-recloser 79

Circuit breaker failure detection 50 BF

Circuit breaker monitoring

Trip circuit supervision

The relay provides complete measurements andrecording functions including:

True RMS values

Event recorder with the last 75 events,1ms time stamped.

Fault recorder with the last 5 faults

Instantaneous recorder with the last 5instantaneous starts

Disturbance recorder with storage of 5 recordsfor 3 seconds each

User interface shall include

A 32 characters backlit display

Programmable LEDs

A front panel RS232 for local settings

A RS485 rear port compatible with MODBUSIEC60870-5-103

An easy to use PC setting software.


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Ordering Information P120 P121 P122 P123

Ordering Code 0 0 1

MiCOM P 1 2 0

MiCOM P 1 2 1

MiCOM P 1 2 2

MiCOM P 1 2 3

Earth current input

0.1 - 40 Ien A

0.01 - 8 Ien B

0.002 - 1 Ien C

Auxiliary supply voltage Digital Inut Voltage 24 - 60V 24 - 60V A

48 - 150Vdc 48 - 150Vdc F

130 - 250Vdc/100 - 250Vac 130 - 250Vdc/100 - 250Vac M

48 - 150Vdc 48 - 150Vdc (ac immune) T

130 - 250Vdc 130 - 250Vdc (ac immune) U

125 - 250Vdc/100 - 250Vac 105 - 145Vdc (special application) H

48 - 150Vdc 110Vdc - 30%/+20% (special application)V

130 - 250Vdc/110 - 250Vac 220Vdc - 30%/+20% (special application)W

Communication protocol

MODBUS 1 KBUS / COURIER 2

IEC 60870 - 103 3

DNP3 4

HMI Language

French 0

English / American 1

Spanish 2

German 3

Italian 4

Russian 5

Polish 6 Portoguese (not yet available for P120 P121 P122 P123) 7

Dutch (not yet available for P120) 8

Czech (not yet available for P120) A

Hungarian (not yet available for P120) B

Greek (not yet available for P120 P121 P122) C


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Ordering Information P125 P126 P127

Ordering Code 0 1

MiCOM P 1 2 5 MiCOM P 1 2 6

MiCOM P 1 2 7

Earth current input

0.1 - 40 Ien A

0.01 - 8 Ien B

0.002 - 1 Ien C

Voltage input

57 -130 V A

220 - 480V B

Auxiliary supply voltage Digital Inut Voltage

24 - 60V 24 - 60V A

48 - 150Vdc 48 - 150Vdc F

130 - 250Vdc/100 - 250Vac 130 - 250Vdc/100 - 250Vac M

48 - 150Vdc 48 - 150Vdc (ac immune) T

130 - 250Vdc 130 - 250Vdc (ac immune) U

125 - 250Vdc/100 - 250Vac 105 - 145Vdc (special application) H

48 - 150Vdc 110Vdc - 30%/+20% (special application)V

130 - 250Vdc/110 - 250Vac 220Vdc - 30%/+20% (special application)W

Communication protocol MODBUS 1

KBUS / COURIER (not yet available) 2

IEC 60870 - 103 3

DNP3 (not yet available) 4

HMI Language

French 0

English / American 1

Spanish 2

German 3

Italian 4 Russian 5

Polish 6

Portoguese 7

Dutch 8

Czech A

Hungarian B

Greek (not yet available) C


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Available 24h a day: +44 (0) 1785 25 00 70

[email protected]

www.areva-td.com

Date post:	07-Apr-2018
Category:	Documents
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P12x Technical Datasheet en 0D

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