Product Guide RET620 Transformer Protection and ControlMinimum pulse timer (2 pcs, minute resolution) TPMGAPC 2 Pulse timer (8 pcs) PTGAPC 2 Transformer Protection and Control 1MRS757846

—RELION® 620 SERIES

Transformer Protection and ControlRET620Product Guide

Contents

1. Description..................................................................... 3

2. Default configurations.....................................................3

3. Protection functions........................................................8

4. Application..................................................................... 9

5. Supported ABB solutions............................................. 10

6. Control......................................................................... 11

7. Measurement............................................................... 12

8. Power quality................................................................12

9. Disturbance recorder....................................................12

10. Event log..................................................................... 13

11. Recorded data............................................................ 13

12. Condition monitoring .................................................. 13

13. Trip-circuit supervision.................................................13

14. Self-supervision...........................................................13

15. Fuse failure supervision............................................... 13

16. Current circuit supervision........................................... 13

17. Access control............................................................ 13

18. Inputs and outputs...................................................... 13

19. Station communication................................................14

20. Technical data.............................................................19

21. Local HMI....................................................................56

22. Mounting methods...................................................... 56

23. Relay case and plug-in unit......................................... 57

24. Selection and ordering data.........................................58

25. Accessories and ordering data.................................... 61

26. Tools...........................................................................61

27. Cyber security............................................................. 62

28. Connection diagrams.................................................. 63

29. Certificates.................................................................. 65

30. References..................................................................65

31. Functions, codes and symbols.................................... 66

32. Document revision history........................................... 71

Disclaimer

The information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any errors

that may appear in this document.

© Copyright 2019 ABB.

All rights reserved.

Trademarks

ABB and Relion are registered trademarks of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered trademarks

of their respective holders.

Transformer Protection and Control 1MRS757846 FRET620 Product version: 2.0 FP1

2 ABB

1. DescriptionRET620 is a dedicated two-winding power transformermanagement relay perfectly aligned for the protection, control,measurement and supervision of both power and step-uptransformers, including power generator-transformer blocks, inutility and industrial power distribution systems. RET620 is a

member of ABB’s Relion® protection and control product familyand its 620 series. The 620 series relays are characterized bytheir functional scalability and withdrawable-unit design.

The 620 series has been designed to unleash the full potentialof the IEC 61850 standard for communication andinteroperability of substation automation devices.

The 620 series relays support a range of communicationprotocols including IEC 61850 with Edition 2 support, processbus according to IEC 61850-9-2 LE, IEC 60870-5-103,

Modbus® and DNP3. Profibus DPV1 communication protocol issupported by using the protocol converter SPA-ZC 302.

2. Default configurationsThe 620 series relays are configured with defaultconfigurations, which can be used as examples of the 620series engineering with different function blocks. The defaultconfigurations are not aimed to be used as real end-userapplications. The end-users always need to create their ownapplication configuration with the configuration tool. However,the default configuration can be used as a starting point bymodifying it according to the requirements.

RET620 is available with one default configuration. The defaultsignal configuration can be altered by means of the graphicalsignal matrix or the graphical application functionality of theProtection and Control IED Manager PCM600. Furthermore,the application configuration functionality of PCM600 supportsthe creation of multi-layer logic functions utilizing various logicalelements including timers and flip-flops. By combiningprotection functions with logic function blocks the relayconfiguration can be adapted to user specific applicationrequirements.

Transformer Protection and Control 1MRS757846 FRET620 Product version: 2.0 FP1 Issued: 2019-06-19

Revision: F

ABB 3

Uo>59G

3×

ARC50L/50NL

3I>→67-1

MAP12MAP12

dIoLo>87NL

U/f>24

3I>>51P-2

MCS 3I, I2MCS 3I, I2

TCSTCM

OPTSOPTM

FUSEF60

3I>/Io>BF51BF/51NBF

RL

ClearESCI

O

U12 0. 0 kVP 0.00 kWQ 0.00 kVAr

IL2 0 A

A

REMARKS

Optionalfunction

No. ofinstances

Alternative function to be defined when ordering

OR3×

Io/Uo

Calculatedvalue

CONDITION MONITORING AND SUPERVISION

MEASUREMENT

- HV: I, U, Io, Uo- LV: I, Io- P, Q, E, pf, f- Limit value supervision- Load profile- Power Quality functions- RTD/mA measurements- Symmetrical components

TRANSFORMER PROTECTION AND CONTROL RELAY

LOCAL HMI

RET620

ALSO AVAILABLE

- 16× prog. push-buttons on LHMI- Disturbance and fault recorders- Event log and recorded data- High-Speed Output module (optional)- Local/Remote push-button on LHMI- Self-supervision- Time synchronization: IEEE-1588, SNTP, IRIG-B- User management- Web HMI

ORAND

COMMUNICATION

Protocols: IEC 61580-8-1/-9-2LE Modbus® IEC 60870-5-103 DNP3

Interfaces: Ethernet: TX (RJ-45), FX (LC) Serial: Serial glass fiber (ST), RS-485, RS-232/485 Redundant protocols: HSR PRP RSTP

8

6

Analog interface types 1)

Current transformer

Voltage transformer1) Conventional transformer inputs

Version 2.0 FP1

CONTROL AND INDICATION 1)

Object Ctrl 2) Ind 3)

CB

DC

ES

3 -

4 4

3 31) Check availability of binary inputs/outputs from technical documentation2) Control and indication function for primary object3) Status indication function for primary object

I2>46

3I>>>50P/51P

3I2f>68

3I>51P-1

Master TripLockout relay

94/86

PROTECTION

3I (HV)

3×

UL1

UL2

UL3

UL1UL2UL3

Uo

Uo

U12

6×RTD2×mA

Io>>51N-2

MCS 3IMCS 3I

CBCMCBCM

2×

3×

Io

Io>51N-1

SYNC25

U12

2×

3U<27

U2>47O-

U1<47U+

2× 2×

3U>59

3×

18×

UFLS/R81LSH

6×

UL1

UL2

UL3

3I (HV)

UL1

UL2

UL3

MCS 3IMCS 3I

TPOSM84M

COLTC90V

3I (LV)

2×

CVPSOFSOFT/21/50

P<32U

P>/Q>32R/32O

Io>51N-1

Io>>51N-2

3I>>→67-2

Io>→67N-1

Io>>→67N-2

dIoLo>87NL

dIoHi>87NH

dIoHi>87NH

3dI>T87T

3I>>>50P/51P

3I>/Io>BF51BF/51NBF

3I>51P-1

3I>>51P-2

I2>46

Master TripLockout relay

94/86

Io(HV)

Io (LV)

Io

3Ith>T49T

2×

U12b

Io (LV)

Io (HV)

2×

2×

2×

f>/f

Table 1. Supported functions

FunctionIEC 61850

A(CTs/VTs)

Protection

Three-phase non-directional overcurrent protection, low stage PHLPTOC1 1 HV

PHLPTOC2 1 LV

Three-phase non-directional overcurrent protection, high stage PHHPTOC1 1 HV

PHHPTOC2 1 LV

Three-phase non-directional overcurrent protection, instantaneous stage PHIPTOC1 1 HV

PHIPTOC2 1 LV

Three-phase directional overcurrent protection, low stage DPHLPDOC 1 HV

Three-phase directional overcurrent protection, high stage DPHHPDOC 1 HV

Non-directional earth-fault protection, low stage EFLPTOC1 1 HV1)

EFLPTOC2 1 LV1)

Non-directional earth-fault protection, high stage EFHPTOC1 1 HV1)

EFHPTOC2 1 LV1)

Directional earth-fault protection, low stage DEFLPDEF 2 HV1)

Directional earth-fault protection, high stage DEFHPDEF 1 HV1)

Negative-sequence overcurrent protection NSPTOC1 1 HV

NSPTOC2 1 LV

Residual overvoltage protection ROVPTOV 3 HV

Three-phase undervoltage protection PHPTUV 4 HV

Three-phase overvoltage protection PHPTOV 3 HV

Positive-sequence undervoltage protection PSPTUV 2 HV

Negative-sequence overvoltage protection NSPTOV 2 HV

Frequency protection FRPFRQ 3 HV

Overexcitation protection OEPVPH 2 HV

Three-phase thermal overload protection, two time constants T2PTTR 1 HV

Loss of phase (undercurrent) PHPTUC1 1 HV

PHPTUC2 1 LV

Stabilized and instantaneous differential protection for two-winding transformers TR2PTDF 1

Numerical stabilized low-impedance restricted earth-fault protection LREFPNDF1 1 HV

LREFPNDF2 1 LV

High-impedance based restricted earth-fault protection HREFPDIF1 1 HV

HREFPDIF2 1 LV


ABB 5

Table 1. Supported functions, continued

FunctionIEC 61850

A(CTs/VTs)

Circuit breaker failure protection CCBRBRF1 1 HV

CCBRBRF2 1 LV

CCBRBRF3 1 HV

Three-phase inrush detector INRPHAR 1 HV

Master trip TRPPTRC 4

Arc protection ARCSARC (3)2)

Load-shedding and restoration LSHDPFRQ 6 HV

Multipurpose protection MAPGAPC 18

Automatic switch-onto-fault logic (SOF) CVPSOF 1 HV

Underpower protection DUPPDPR 2 HV

Reverse power/directional overpower protection DOPPDPR 3 HV

Control

Circuit-breaker control CBXCBR1 1 HV

CBXCBR2 1 LV

CBXCBR3 1 HV

Disconnector control DCXSWI1 1 HV

DCXSWI2 1 HV

DCXSWI3 1 LV

DCXSWI4 1 LV

Earthing switch control ESXSWI1 1 HV

ESXSWI2 1 LV

ESXSWI3 1 HV

Disconnector position indication DCSXSWI1 1 HV

DCSXSWI2 1 HV

DCSXSWI3 1 LV

DCSXSWI4 1 LV

Earthing switch indication ESSXSWI1 1 HV

ESSXSWI2 1 LV

ESSXSWI3 1 HV

Synchronism and energizing check SECRSYN 1 HV

Tap changer position indication TPOSYLTC 1

Tap changer control with voltage regulator OLATCC (1) LV

Condition monitoring and supervision


6 ABB


FunctionIEC 61850

A(CTs/VTs)

Circuit-breaker condition monitoring SSCBR1 1 HV

SSCBR2 1 LV

SSCBR3 1 HV

Trip circuit supervision TCSSCBR1 1 HV

TCSSCBR2 1 LV

Current circuit supervision CCSPVC1 1 HV

CCSPVC2 1 LV

Advanced current circuit supervision for transformers CTSRCTF 1

Fuse failure supervision SEQSPVC 1 HV

Runtime counter for machines and devices MDSOPT 2

Measurement

Three-phase current measurement CMMXU1 1 HV

CMMXU2 1 LV

Sequence current measurement CSMSQI1 1 HV

CSMSQI2 1 LV

Residual current measurement RESCMMXU1 1 HV

RESCMMXU2 1 LV

Three-phase voltage measurement VMMXU 1 HV

Single-phase voltage measurement VAMMXU2 1 LV

VAMMXU3 1 HV

Residual voltage measurement RESVMMXU 1 HV

Sequence voltage measurement VSMSQI 1 HV

Three-phase power and energy measurement PEMMXU 1 HV

Load profile record LDPRLRC 1 HV

Frequency measurement FMMXU 1 HV

Power quality

Current total demand distortion CMHAI 1 HV

Voltage total harmonic distortion VMHAI 1 HV

Voltage variation PHQVVR 1 HV

Voltage unbalance VSQVUB 1 HV

Other

Minimum pulse timer (2 pcs) TPGAPC 4

Minimum pulse timer (2 pcs, second resolution) TPSGAPC 2

Minimum pulse timer (2 pcs, minute resolution) TPMGAPC 2

Pulse timer (8 pcs) PTGAPC 2


ABB 7


FunctionIEC 61850

A(CTs/VTs)

Time delay off (8 pcs) TOFGAPC 4

Time delay on (8 pcs) TONGAPC 4

Set-reset (8 pcs) SRGAPC 4

Move (8 pcs) MVGAPC 4

Integer value move MVI4GAPC 4

Analog value scaling SCA4GAPC 4

Generic control point (16 pcs) SPCGAPC 3

Remote generic control points SPCRGAPC 1

Local generic control points SPCLGAPC 1

Generic up-down counters UDFCNT 12

Programmable buttons (16 buttons) FKEYGGIO 1

Logging functions

Disturbance recorder RDRE 1

Fault recorder FLTRFRC 1

Sequence event recorder SER 11, 2, ... = Number of included instances. The instances of a protection function represent the number of identical protection function blocks available inthe standard configuration.() = optionalHV = The function block is to be used on the high-voltage side in the application.LV = The function block is to be used on the low-voltage side in the application.

1) Function uses calculated value when the high-impedance based restricted earth-fault protection is used2) Io is calculated from the measured phase currents

3. Protection functionsRET620 features a three-phase, multi-slope stabilized (biased)stage transformer differential protection and an instantaneousstage to provide fast and selective protection for phase-to-phase short circuit, winding interturn fault and bushing flash-over protection. Besides the second harmonic restraint, anadvanced waveform-based blocking algorithm ensures stabilityat transformer energization and the fifth harmonic restraintfunction ensures good protection stability at moderateoverexcitation of power transformers. The restricted earth-faultprotection (REF) completes the overall differential protectionproviding detection of even single phase-to-earth faults close tothe neutral earthing point of the transformer. Either theconventional high-impedance scheme or the numerical low-impedance scheme can be selected for the protection of thetransformer windings. When the low-impedance REFprotection is used, neither stabilizing resistors nor varistors areneeded and, as a further benefit, the transforming ratio of theneutral earthing CTs can differ from that of the phase currenttransformers. Due to its unit protection character and absoluteselectivity, REF does not need to be time-graded with other

protection schemes, and therefore a high-speed fault clearancecan be achieved.

The relay also incorporates a thermal overload protectionfunction that supervises the thermal stress of the transformerwindings to prevent the premature aging of the insulation of thewindings. Multiple stages of short circuit, phase-overcurrent,negative-sequence and earth-fault backup protection areseparately available for both sides of the power transformer. Anearth-fault protection based on the measured or calculatedresidual voltage is also available. The relay also features three-phase overvoltage protection, three-phase undervoltageprotection and residual overvoltage protection. Furthermore,the relay also offers circuit breaker failure protection anddirectional overpower protection and directional underpowerprotection.

Enhanced with optional hardware and software, the relay alsofeatures three light detection point-to-point lens sensors for arcfault protection of the circuit breaker, busbar and cablecompartment of metal-enclosed indoor switchgear.


8 ABB

The arc-fault protection sensor interface is available on theoptional communication module. Fast tripping increases staffsafety and security and limits material damage in an arc faultsituation. A binary input and output module can be selected asan option - having three high speed binary outputs (HSO) itfurther decreases the total operate time with typically 4...6 mscompared to the normal power outputs.

4. ApplicationRET620 has been designed to be the main protection for two-winding power transformers and power generator-transformerblocks. The relay also includes an optional voltage regulationfunction.

RET620 can be used with either single- or double-busbarconfigurations with one or two breakers, and with numerousswitching device configurations. The relay supports asubstantial number of both manually and motor-operateddisconnectors and earthing switches, and it is capable ofrunning large configurations. The number of controllabledevices depends on the number of inputs and outputs left freefrom other application needs. The number of available I/Os canbe increased with the RIO600 Remote I/O device.

The relay offers extensive possibilities to tailor theconfigurations to end application requirements. The tool suitefor all Relion relays is Protection and Control IED ManagerPCM600, which contains all the necessary tools for configuringthe device, including functionality, parameterization, the HMIand communication.

RET620 provides both transformer protection and control andvoltage regulator control at the same time. The voltageregulation capability is targeted for the automatic and manualvoltage regulation of power transformers equipped with amotor-driven on-load tap changer. The automatic voltageregulation can be applied both with a single transformer as wellas with up to four transformers running in parallel. The relay alsosupports both traditional resistor connection-based andnumerically calculated high-impedance earth-fault protection.To further improve the arc protection and minimize the effectsof an arc fault, the 620 series relays ordered with the arcprotection option can be equipped with an I/O card featuringhigh-speed outputs.

Io HV

Io LV

3I HV

3I LV

3U

U12

U12b

Uo

RTD

RET620Default conf. + Option A

ANSI IEC

25

50L/50NL

50P/51P

51P/51N

67/67N

84M

87T

90V

MAP

32R/32O

49T

87NH

87NL

87NH

87NL

SYNC

ARC

3I>>>

3I/Io

3I→/Io→

TPOSM

3dI>T

COLTC

MAP

P>/Q>

3Ith>T

dIoHi>

dIoLo>

dIoHi>

dIoLo>

HV

side

LV

side

GUID-A758C254-7907-4965-9389-113BCBD77B75 V2 EN

Figure 2. The protection of HV/MV, or an MV/MV transformer with low-impedance earth-fault protection on both sides of the transformer


ABB 9

Io HV

3I LV

3I HV

3U

U12/U12b

Uo

RTD

RET620Default conf. + Option A

ANSI IEC

25

50L/50NL

50P/51P

51P/51N

84M

87T

90V

MAP

49T

87NH

87NL

SYNC

ARC

3I>>>

3I/Io

TPOSM

3dI>T

COLTC

MAP

3Ith>T

dIoHi>

dIoLo>

HV

side

GUID-510B91B4-88A8-4A57-8789-C38683DC2A92 V2 EN

Figure 3. Protection of HV/MV transformer with restricted earth-fault protection on the upper side of the transformer

5. Supported ABB solutionsThe 620 series protection relays together with the SubstationManagement Unit COM600S constitute a genuine IEC 61850solution for reliable power distribution in utility and industrialpower systems. To facilitate the system engineering, ABB'srelays are supplied with connectivity packages. Theconnectivity packages include a compilation of software andrelay-specific information, including single-line diagramtemplates and a full relay data model. The data model includesevent and parameter lists. With the connectivity packages, therelays can be readily configured using PCM600 and integratedwith COM600S or the network control and managementsystem MicroSCADA Pro.

The 620 series relays offer native support for IEC 61850 Edition2 also including binary and analog horizontal GOOSEmessaging. In addition, process bus with the sending ofsampled values of analog currents and voltages and thereceiving of sampled values of voltages is supported.Compared to traditional hard-wired, inter-device signaling,peer-to-peer communication over a switched Ethernet LANoffers an advanced and versatile platform for power systemprotection. Among the distinctive features of the protectionsystem approach, enabled by the full implementation of the IEC61850 substation automation standard, are fastcommunication capability, continuous supervision of theprotection and communication system's integrity, and aninherent flexibility regarding reconfiguration and upgrades.Thisprotection relay series is able to optimally utilize interoperabilityprovided by the IEC 61850 Edition 2 features.

At substation level, COM600S uses the data content of the bay-level devices to enhance substation level functionality.COM600S features a Web browser-based HMI, which providesa customizable graphical display for visualizing single-linemimic diagrams for switchgear bay solutions. The Web HMI ofCOM600S also provides an overview of the whole substation,including relay-specific single-line diagrams, which makesinformation easily accessible. Substation devices andprocesses can also be remotely accessed through the WebHMI, which improves personnel safety.

In addition, COM600S can be used as a local data warehousefor the substation's technical documentation and for thenetwork data collected by the devices. The collected networkdata facilitates extensive reporting and analyzing of networkfault situations by using the data historian and event handlingfeatures of COM600S. The historical data can be used foraccurate monitoring of process and equipment performance,using calculations based on both real-time and historicalvalues. A better understanding of the process dynamics isachieved by combining time-based process measurementswith production and maintenance events.

COM600S can also function as a gateway and provideseamless connectivity between the substation devices andnetwork-level control and management systems, such asMicroSCADA Pro and System 800xA.


10 ABB

Table 2. Supported ABB solutions

Product Version

Substation Management Unit COM600S 4.0 SP1 or later

4.1 or later (Edition 2)

MicroSCADA Pro SYS 600 9.3 FP2 or later

9.4 or later (Edition 2)

System 800xA 5.1 or later

PCM600Ethernet switch

Utility: IEC 60870-5-104Industry: OPC

COM600SWeb HMI

ABBMicroSCADA Pro/

System 800xA

Analog and binary horizontal GOOSE communication IEC 61850

PCM600Ethernet switch

COM600SWeb HMI

Analog and binary horizontal GOOSE communication IEC 61850

GUID-4D002AA0-E35D-4D3F-A157-01F1A3044DDB V4 EN

Figure 4. ABB power system example using Relion relays, COM600S and MicroSCADA Pro/System 800xA

6. ControlRET620 integrates functionality for the control of circuitbreakers, disconnectors and earthing switches via the frontpanel HMI or by means of remote controls. The relay includesthree circuit breaker control blocks. In addition to the circuitbreaker control, the relay features four disconnector controlblocks intended for the motor-operated control ofdisconnectors or circuit breaker truck. Furthermore, the relayoffers three control blocks intended for the motor-operatedcontrol of earthing switch. On top of that, the relay includes

additional four disconnector position indication blocks andthree earthing switch position indication blocks usable withmanually-only controlled disconnectors and earthing switches.

Two physical binary inputs and two physical binary outputs areneeded in the relay for each controllable primary device takeninto use. Depending on the chosen hardware configuration ofthe relay, the number of binary inputs and binary outputs varies.In case the amount of available binary inputs or outputs of thechosen hardware configuration is not sufficient, connecting an


ABB 11

external input or output module, for example RIO600, to therelay can extend binary inputs and outputs utilizable in the relayconfiguration. The binary inputs and outputs of the external I/Omodule can be used for the less time-critical binary signals ofthe application. The integration enables releasing of someinitially reserved binary inputs and outputs of the relay.

The suitability of the binary outputs of the relay which have beenselected for the controlling of primary devices should becarefully verified, for example, the make and carry as well as thebreaking capacity. In case the requirements for the controlcircuit of the primary device are not met, the use of externalauxiliary relays should be considered.

The graphical LCD of the relay's HMI includes a single-linediagram (SLD) with position indication for the relevant primarydevices. Interlocking schemes required by the application areconfigured using the Signal Matrix or the ApplicationConfiguration tools in PCM600.

A synchrocheck function is incorporated to ensure that thevoltage, phase angle and frequency on either side of an opencircuit breaker satisfy the conditions for a safe interconnectionof two networks.

A functionality is included optionally for controlling the voltageon the load side of the power transformer. Based on themeasured values, the relay sends control commands to the tapchanger, thus enabling the optional automatic voltageregulation.

7. MeasurementThe relay continuously measures the phase currents and theneutral current. Furthermore, the relay measures the phasevoltages and the residual voltage. In addition, the relaycalculates the symmetrical components of the currents andvoltages, the system frequency, the active and reactive power,the power factor, the active and reactive energy values as wellas the demand value of current and power over a user-selectable preset time frame. Calculated values are alsoobtained from the protections and condition monitoringfunctions of the relay.

The relay can measure analog signals such as temperature,pressure and tap changer position values via the RTD inputs orthe mA inputs using transducers. Besides the RTD modulewithin the basic HW combination, it is also possible to add onemore optional RTD/mA module.

The measured values can be accessed via the local HMI orremotely via the communication interface of the relay. Thevalues can also be accessed locally or remotely using the WebHMI.

The relay is provided with a load profile recorder. The loadprofile feature stores the historical load data captured at aperiodical time interval (demand interval). The records are inCOMTRADE format.

8. Power qualityIn the EN standards, power quality is defined through thecharacteristics of the supply voltage. Transients, short-durationand long-duration voltage variations and unbalance andwaveform distortions are the key characteristics describingpower quality. The distortion monitoring functions are used formonitoring the current total demand distortion and the voltagetotal harmonic distortion.

Power quality monitoring is an essential service that utilities canprovide for their industrial and key customers. A monitoringsystem can provide information about system disturbances andtheir possible causes. It can also detect problem conditionsthroughout the system before they cause customer complaints,equipment malfunctions and even equipment damage orfailure. Power quality problems are not limited to the utility sideof the system. In fact, the majority of power quality problemsare localized within customer facilities. Thus, power qualitymonitoring is not only an effective customer service strategy butalso a way to protect a utility's reputation for quality power andservice.

The protection relay has the following power quality monitoringfunctions.

• Voltage variation• Voltage unbalance• Current harmonics• Voltage harmonics

The voltage unbalance and voltage variation functions are usedfor measuring short-duration voltage variations and monitoringvoltage unbalance conditions in power transmission anddistribution networks.

The voltage and current harmonics functions provide a methodfor monitoring the power quality by means of the currentwaveform distortion and voltage waveform distortion. Thefunctions provides a short-term three-second average and along-term demand for total demand distortion TDD and totalharmonic distortion THD.

9. Disturbance recorderThe relay is provided with a disturbance recorder featuring up to12 analog and 64 binary signal channels.The analog channelscan be set to record either the waveform or the trend of thecurrents and voltages measured.

The analog channels can be set to trigger the recording functionwhen the measured value falls below or exceeds the set values.The binary signal channels can be set to start a recording eitheron the rising or the falling edge of the binary signal or on both.

By default, the binary channels are set to record external orinternal relay signals, for example, the start or trip signals of therelay stages, or external blocking or control signals. Binary relaysignals, such as protection start and trip signals, or an externalrelay control signal via a binary input, can be set to trigger the


12 ABB

recording. Recorded information is stored in a nonvolatilememory and can be uploaded for subsequent fault analysis.

10. Event logTo collect sequence-of-events information, the relay has anonvolatile memory capable of storing 1024 events with theassociated time stamps. The nonvolatile memory retains itsdata even if the relay temporarily loses its auxiliary supply. Theevent log facilitates detailed pre- and post-fault analyses offeeder faults and disturbances. The considerable capacity toprocess and store data and events in the relay facilitatesmeeting the growing information demand of future networkconfigurations.

The sequence-of-events information can be accessed either vialocal HMI or remotely via the communication interface of therelay. The information can also be accessed locally or remotelyusing the Web HMI.

11. Recorded dataThe relay has the capacity to store the records of the 128 latestfault events. The records can be used to analyze the powersystem events. Each record includes, for example, current,voltage and angle values and a time stamp. The fault recordingcan be triggered by the start or the trip signal of a protectionblock, or by both. The available measurement modes includeDFT, RMS and peak-to-peak. Fault records store relaymeasurement values at the moment when any protectionfunction starts. In addition, the maximum demand current withtime stamp is separately recorded. The records are stored inthe nonvolatile memory.

12. Condition monitoringThe condition monitoring functions of the relay constantlymonitor the performance and the condition of the circuitbreaker. The monitoring comprises the spring charging time,SF6 gas pressure, the travel time and the inactivity time of thecircuit breaker.

The monitoring functions provide operational circuit breakerhistory data, which can be used for scheduling preventivecircuit breaker maintenance.

In addition, the relay includes a runtime counter for monitoringof how many hours a protected device has been in operationthus enabling scheduling of time-based preventivemaintenance of the device.

13. Trip-circuit supervisionThe trip-circuit supervision continuously monitors theavailability and operability of the trip circuit. It provides open-circuit monitoring both when the circuit breaker is in its closedand in its open position. It also detects loss of circuit-breakercontrol voltage.

14. Self-supervisionThe relay’s built-in self-supervision system continuouslymonitors the state of the relay hardware and the operation ofthe relay software. Any fault or malfunction detected is used foralerting the operator.

A permanent relay fault blocks the protection functions toprevent incorrect operation.

15. Fuse failure supervisionThe fuse failure supervision detects failures between thevoltage measurement circuit and the relay. The failures aredetected either by the negative sequence-based algorithm orby the delta voltage and delta current algorithm. Upon thedetection of a failure, the fuse failure supervision functionactivates an alarm and blocks voltage-dependent protectionfunctions from unintended operation.

16. Current circuit supervisionCurrent circuit supervision is used for detecting faults in thecurrent transformer secondary circuits. On detecting of a faultthe current circuit supervision function activates an alarm LEDand blocks certain protection functions to avoid unintendedoperation. The current circuit supervision function calculatesthe sum of the phase currents from the protection cores andcompares the sum with the measured single reference currentfrom a core balance current transformer or from separate coresin the phase current transformers.

17. Access controlTo protect the relay from unauthorized access and to maintaininformation integrity, the relay is provided with a four-level, role-based authentication system with administrator-programmableindividual passwords for the viewer, operator, engineer andadministrator levels. The access control applies to the localHMI, the Web HMI and PCM600.

18. Inputs and outputsThe relay is equipped with six phase current inputs, tworesidual-current inputs, three phase voltage inputs, oneresidual-voltage input, one phase-to-phase voltage forsyncrocheck input and one phase-to-phase voltage forautomatic voltage regulator via online tap change input. Inaddition to current and voltage measurements, the relay's basicconfiguration includes eight binary inputs and 13 binaryoutputs. Additionally, basic configuration offers two RTD inputsand one mA input. The phase current inputs and the residual-current inputs are rated 1/5 A, that is, the inputs allow theconnection of either 1 A or 5 A secondary current transformers.The three phase voltage inputs and the residual-voltage inputcovers the rated voltages 60...210 V. Both phase-to-phasevoltages and phase-to-earth voltages can be connected.

As an optional addition, the relay's basic configuration includesone empty slot which can be equipped with one of the following


ABB 13

optional modules. The first option, additional binary inputs andoutputs module, adds eight binary inputs and four binaryoutputs to the relay. This option is especially needed whenconnecting the relay to several controllable objects. Thesecond option, an additional RTD/mA input module, increasesthe relay with six RTD inputs and two mA inputs when additionalsensor measurements for example for temperatures,pressures, levels and so on are of interest. The third option is ahigh-speed output board including eight binary inputs and threehigh-speed outputs. The high-speed outputs have a shorteractivation time compared to the conventional mechanicaloutput relays, shortening the overall relay operation time by 4...6 ms with very time-critical applications like arc protection. Thehigh-speed outputs are freely configurable in the relayapplication and not limited to arc protection only.

The rated values of the current and voltage inputs are settableparameters of the relay. In addition, the binary input thresholdsare selectable within the range of 16…176 V DC by adjustingthe relay’s parameter settings.

All binary input and output contacts are freely configurable withthe signal matrix or application configuration functionality ofPCM600.

See the Input/output overview table and the terminal diagramsfor more information about the inputs and outputs.

If the number of the relay’s own inputs and outputs does notcover all the intended purposes, connecting to an external inputor output module, for example RIO600, increases the numberof binary inputs and outputs utilizable in the relay configuration.In this case, the external inputs and outputs are connected tothe relay via IEC 61850 GOOSE to reach fast reaction timesbetween the relay and RIO600 information. The needed binaryinput and output connections between the relay and RIO600units can be configured in a PCM600 tool and then utilized inthe relay configuration.

Table 3. Input/output overview

Default conf. Order code digit Analog channels Binary channels

5-6 7-8 CT VT BI BO RTD mA

A AA AA 8 6 16 4 PO + 13 SO 2 1

AB 8 4 PO + 9 SO 8 3

AC 16 4 PO + 9 SO+ 3 HSO

2 1

NN 8 4 PO + 9 SO 2 1

19. Station communicationThe relay supports a range of communication protocolsincluding IEC 61850 Edition 1 and Edition 2, IEC 61850-9-2 LE,

IEC 60870-5-103, Modbus® and DNP3. Profibus DPV1communication protocol is supported with using the protocolconverter SPA-ZC 302. Operational information and controlsare available through these protocols. However, somecommunication functionality, for example, horizontalcommunication between the relays, is only enabled by the IEC61850 communication protocol.

The IEC 61850 protocol is a core part of the relay as theprotection and control application is fully based on standardmodelling. The relay supports Edition 2 and Edition 1 versionsof the standard. With Edition 2 support, the relay has the latestfunctionality modelling for substation applications and the bestinteroperability for modern substations. It incorporates also thefull support of standard device mode functionality supportingdifferent test applications. Control applications can utilize thenew safe and advanced station control authority feature.

The IEC 61850 communication implementation supportsmonitoring and control functions. Additionally, parametersettings, disturbance recordings and fault records can beaccessed using the IEC 61850 protocol. Disturbancerecordings are available to any Ethernet-based application inthe standard COMTRADE file format. The relay supportssimultaneous event reporting to five different clients on thestation bus. The relay can exchange data with other devicesusing the IEC 61850 protocol.

The relay can send binary and analog signals to other devicesusing the IEC 61850-8-1 GOOSE (Generic Object OrientedSubstation Event) profile. Binary GOOSE messaging can, forexample, be employed for protection and interlocking-basedprotection schemes. The relay meets the GOOSE performancerequirements for tripping applications in distributionsubstations, as defined by the IEC 61850 standard (

between the relays when controlling parallel runningtransformers.

The relay also supports IEC 61850 process bus by sendingsampled values of analog currents and voltages and byreceiving sampled values of voltages. With this functionality thegalvanic interpanel wiring can be replaced with Ethernetcommunication. The measured values are transferred assampled values using IEC 61850-9-2 LE protocol. The intendedapplication for sampled values shares the voltages to other 620series relays, having voltage based functions and 9-2 support.620 relays with process bus based applications use IEEE 1588for high accuracy time synchronization.

For redundant Ethernet communication, the relay offers eithertwo optical or two galvanic Ethernet network interfaces. A thirdport with galvanic Ethernet network interface is also available.The third Ethernet interface provides connectivity for any otherEthernet device to an IEC 61850 station bus inside a switchgearbay, for example connection of a Remote I/O. Ethernet networkredundancy can be achieved using the high-availabilityseamless redundancy (HSR) protocol or the parallelredundancy protocol (PRP) or a with self-healing ring using

RSTP in managed switches. Ethernet redundancy can beapplied to Ethernet-based IEC 61850, Modbus and DNP3protocols.

The IEC 61850 standard specifies network redundancy whichimproves the system availability for the substationcommunication. The network redundancy is based on twocomplementary protocols defined in the IEC 62439-3 standard:PRP and HSR protocols. Both protocols are able to overcome afailure of a link or switch with a zero switch-over time. In bothprotocols, each network node has two identical Ethernet portsdedicated for one network connection. The protocols rely onthe duplication of all transmitted information and provide a zeroswitch-over time if the links or switches fail, thus fulfilling all thestringent real-time requirements of substation automation.

In PRP, each network node is attached to two independentnetworks operated in parallel. The networks are completelyseparated to ensure failure independence and can havedifferent topologies. The networks operate in parallel, thusproviding zero-time recovery and continuous checking ofredundancy to avoid failures.

Ethernet switchIEC 61850 PRPEthernet switch

SCADACOM600

GUID-334D26B1-C3BD-47B6-BD9D-2301190A5E9D V3 EN

Figure 5. Parallel redundancy protocol (PRP) solution

HSR applies the PRP principle of parallel operation to a singlering. For each message sent, the node sends two frames, onethrough each port. Both frames circulate in opposite directionsover the ring. Every node forwards the frames it receives from

one port to another to reach the next node. When theoriginating sender node receives the frame it sent, the sendernode discards the frame to avoid loops. The HSR ring with 620series relays supports the connection of up to 30 relays. If more


ABB 15

than 30 relays are connected, it is recommended to split thenetwork into several rings to guarantee the performance forreal-time applications.

Ethernet switch

RedundancyBox

IEC 61850 HSR

RedundancyBox

RedundancyBox

REF615 REF620 RET620 REM620 REF615

SCADA Devices not supporting HSRCOM600

GUID-7996332D-7FC8-49F3-A4FE-FB4ABB730405 V1 EN

Figure 6. High availability seamless redundancy (HSR) solution

The choice between the HSR and PRP redundancy protocolsdepends on the required functionality, cost and complexity.

The self-healing Ethernet ring solution enables a cost-efficientcommunication ring controlled by a managed switch withstandard Rapid Spanning Tree l Protocol (RSTP) support. Themanaged switch controls the consistency of the loop, routesthe data and corrects the data flow in case of a communication

switch-over. The relays in the ring topology act as unmanagedswitches forwarding unrelated data traffic. The Ethernet ringsolution supports the connection of up to thirty 620 seriesrelays. If more than 30 relays are connected, it is recommendedto split the network into several rings. The self-healing Ethernetring solution avoids single point of failure concerns andimproves the reliability of the communication.


16 ABB

Managed Ethernet switchwith RSTP support

Managed Ethernet switchwith RSTP support

Client BClient A

Network ANetwork B

GUID-AB81C355-EF5D-4658-8AE0-01DC076E519C V4 EN

Figure 7. Self-healing Ethernet ring solution

All communication connectors, except for the front portconnector, are placed on integrated optional communicationmodules. The relay can be connected to Ethernet-basedcommunication systems via the RJ-45 connector (100Base-TX)or the fiber-optic LC connector (100Base-FX). If a connection tothe serial bus is required, the 9-pin RS-485 screw-terminal canbe used. An optional serial interface is available for RS-232communication.

Modbus implementation supports RTU, ASCII and TCP modes.Besides standard Modbus functionality, the relay supportsretrieval of time-stamped events, changing the active settinggroup and uploading of the latest fault records. If a ModbusTCP connection is used, five clients can be connected to therelay simultaneously. Further, Modbus serial and Modbus TCPcan be used in parallel, and if required both IEC 61850 andModbus protocols can be run simultaneously.

The IEC 60870-5-103 implementation supports two parallelserial bus connections to two different masters. Besides basicstandard functionality, the relay supports changing of the activesetting group and uploading of disturbance recordings in IEC60870-5-103 format. Further, IEC 60870-5-103 can be used atthe same time with the IEC 61850 protocol.

DNP3 supports both serial and TCP modes for connection upto five masters. Changing of the active setting and reading fault

records are supported. DNP serial and DNP TCP can be used inparallel. If required, both IEC 61850 and DNP protocols can berun simultaneously.

620 series supports Profibus DPV1 with support of SPA-ZC302 Profibus adapter. If Profibus is required the relay must beordered with Modbus serial options. Modbus implementationincludes SPA-protocol emulation functionality. Thisfunctionality enables connection to SPA-ZC 302.

When the relay uses the RS-485 bus for the serialcommunication, both two- and four wire connections aresupported. Termination and pull-up/down resistors can beconfigured with jumpers on the communication card so externalresistors are not needed.

The relay supports the following time synchronization methodswith a time-stamping resolution of 1 ms.

Ethernet-based• SNTP (Simple Network Time Protocol)

With special time synchronization wiring• IRIG-B (Inter-Range Instrumentation Group - Time Code

Format B)


ABB 17

The relay supports the following high accuracy timesynchronization method with a time-stamping resolution of 4 µsrequired especially in process bus applications.• PTP (IEEE 1588) v2 with Power Profile

The IEEE 1588 support is included in all variants having aredundant Ethernet communication module.

IEEE 1588 v2 features• Ordinary Clock with Best Master Clock algorithm• One-step Transparent Clock for Ethernet ring topology• 1588 v2 Power Profile• Receive (slave): 1-step/2-step• Transmit (master): 1-step

• Layer 2 mapping• Peer to peer delay calculation• Multicast operation

Required accuracy of grandmaster clock is +/-1 µs. The relaycan work as a master clock per BMC algorithm if the externalgrandmaster clock is not available for short term.

The IEEE 1588 support is included in all variants having aredundant Ethernet communication module.

In addition, the relay supports time synchronization viaModbus, DNP3 and IEC 60870-5-103 serial communicationprotocols.

Table 4. Supported station communication interfaces and protocols

Interfaces/Protocols Ethernet Serial

100BASE-TX RJ-45 100BASE-FX LC RS-232/RS-485 Fiber-optic ST

IEC 61850-8-1 ● ● - -

IEC 61850-9-2 LE ● ● - -

MODBUS RTU/ASCII - - ● ●

MODBUS TCP/IP ● ● - -

DNP3 (serial) - - ● ●

DNP3 TCP/IP ● ● - -

IEC 60870-5-103 - - ● ●● = Supported


18 ABB

20. Technical data

Table 5. Dimensions

Description Value

Width Frame 262.2 mm

Case 246 mm

Height Frame 177 mm, 4U

Case 160 mm

Depth 201 mm

Weight Complete protection relay max. 5.5 kg

Plug-in unit only max. 3.0 kg

Table 6. Power supply

Description Type 1 Type 2

Uaux nominal 100, 110, 120, 220, 240 V AC, 50 and 60 Hz 24, 30, 48, 60 V DC

48, 60, 110, 125, 220, 250 V DC

Maximum interruption time in the auxiliaryDC voltage without resetting the relay

50 ms at Un rated

Uaux variation 38...110% of Un (38...264 V AC) 50...120% of Un (12...72 V DC)

80...120% of Un (38.4...300 V DC)

Start-up threshold 19.2 V DC (24 V DC × 80%)

Burden of auxiliary voltage supply underquiescent (Pq)/operating condition

DC

Table 7. Energizing inputs

Description Value

Rated frequency 50/60 Hz ± 5 Hz

Current inputs Rated current, In 1/5 A1)

Thermal withstand capability:

• Continuously 20 A

• For 1 s 500 A

Dynamic current withstand:

• Half-wave value 1250 A

Input impedance

Table 9. RTD/mA measurement

Description Value

RTD inputs Supported RTD sensors 100 Ω platinum250 Ω platinum100 Ω nickel120 Ω nickel250 Ω nickel10 Ω copper

TCR 0.00385 (DIN 43760)TCR 0.00385TCR 0.00618 (DIN 43760)TCR 0.00618TCR 0.00618TCR 0.00427

Supported resistance range 0...2 kΩ

Maximum lead resistance (three-wire measurement) 25 Ω per lead

Isolation 2 kV (inputs to protective earth)

Response time

Table 12. Double-pole power outputs with TCS function X100: PO3 and PO4

Description Value 1)

Rated voltage 250 V AC/DC

Continuous contact carry 8 A

Make and carry for 3.0 s 15 A


Breaking capacity when the control-circuit time constant L/R

Table 15. High-speed output HSO

Description Value 1)

Rated voltage 250 V AC/DC

Continuous contact carry 6 A



Breaking capacity when the control-circuit time constant L/R

Table 20. Degree of protection of flush-mounted protection relay

Description Value

Front side IP 54

Rear side, connection terminals IP 20

Table 21. Environmental conditions

Description Value

Operating temperature range -25...+55ºC (continuous)

Short-time service temperature range -40...+85ºC (

Table 22. Electromagnetic compatibility tests

Description Type test value Reference

1 MHz/100 kHz burst disturbance test IEC 61000-4-18IEC 60255-26, class IIIIEEE C37.90.1-2002

• Common mode 2.5 kV

• Differential mode 2.5 kV

3 MHz, 10 MHz and 30 MHz burst disturbancetest

IEC 61000-4-18IEC 60255-26, class III

• Common mode 2.5 kV

Electrostatic discharge test IEC 61000-4-2IEC 60255-26IEEE C37.90.3-2001

• Contact discharge 8 kV

• Air discharge 15 kV

Radio frequency interference test

10 V (rms)f = 150 kHz...80 MHz

IEC 61000-4-6IEC 60255-26, class III

10 V/m (rms)f = 80...2700 MHz

IEC 61000-4-3IEC 60255-26, class III

10 V/mf = 900 MHz

ENV 50204IEC 60255-26, class III

Fast transient disturbance test IEC 61000-4-4IEC 60255-26IEEE C37.90.1-2002

• All ports 4 kV

Surge immunity test IEC 61000-4-5IEC 60255-26

• Communication 1 kV, line-to-earth

• Other ports 4 kV, line-to-earth2 kV, line-to-line

Power frequency (50 Hz) magnetic fieldimmunity test

IEC 61000-4-8

• Continuous• 1...3 s

300 A/m1000 A/m

Pulse magnetic field immunity test 1000 A/m6.4/16 µs

IEC 61000-4-9

Damped oscillatory magnetic field immunity test IEC 61000-4-10

• 2 s 100 A/m

• 1 MHz 400 transients/s

Voltage dips and short interruptions 30%/10 ms60%/100 ms60%/1000 ms>95%/5000 ms

IEC 61000-4-11

Power frequency immunity test Binary inputs only IEC 61000-4-16IEC 60255-26, class A

• Common mode 300 V rms


ABB 25

Table 22. Electromagnetic compatibility tests, continued


• Differential mode 150 V rms

Conducted common mode disturbances 15 Hz...150 kHzTest level 3 (10/1/10 V rms)

IEC 61000-4-16

Emission tests EN 55011, class AIEC 60255-26CISPR 11CISPR 12

• Conducted

0.15...0.50 MHz

Table 25. Environmental tests


Dry heat test • 96 h at +55ºC• 16 h at +85ºC1)

IEC 60068-2-2

Dry cold test • 96 h at -25ºC• 16 h at -40ºC

IEC 60068-2-1

Damp heat test • 6 cycles (12 h + 12 h) at +25°C…+55°C,humidity >93%

IEC 60068-2-30

Change of temperature test • 5 cycles (3 h + 3 h)at -25°C...+55°C

IEC60068-2-14

Storage test • 96 h at -40ºC• 96 h at +85ºC

IEC 60068-2-1IEC 60068-2-2

1) For relays with an LC communication interface the maximum operating temperature is +70oC

Table 26. Product safety

Description Reference

LV directive 2006/95/EC

Standard EN 60255-27 (2013)EN 60255-1 (2009)

Table 27. EMC compliance

Description Reference

EMC directive 2004/108/EC

Standard EN 60255-26 (2013)

Table 28. RoHS compliance

Description

Complies with RoHS directive 2002/95/EC


ABB 27

Protection functions

Table 29. Three-phase non-directional overcurrent protection (PHxPTOC)

Characteristic Value

Operation accuracy Depending on the frequency of the measured current: fn ±2 Hz

PHLPTOC ±1.5% of the set value or ±0.002 × In

PHHPTOCandPHIPTOC

±1.5% of set value or ±0.002 × In(at currents in the range of 0.1…10 × In)±5.0% of the set value(at currents in the range of 10…40 × In)

Start time 1)2) Minimum Typical Maximum

PHIPTOC:IFault = 2 × set Start valueIFault = 10 × set Start value

16 ms 11 ms

19 ms 12 ms

23 ms 14 ms

PHHPTOC and PHLPTOC:IFault = 2 × set Start value

23 ms

26 ms

29 ms

Reset time Typically 40 ms

Reset ratio Typically 0.96

Retardation time

Table 30. Three-phase non-directional overcurrent protection (PHxPTOC) main settings

Parameter Function Value (Range) Step

Start value PHLPTOC 0.05...5.00 × In 0.01

PHHPTOC 0.10...40.00 × In 0.01

PHIPTOC 1.00...40.00 × In 0.01

Time multiplier PHLPTOC 0.05...15.00 0.01

PHHPTOC 0.05...15.00 0.01

Operate delay time PHLPTOC 40...200000 ms 10

PHHPTOC 40...200000 ms 10

PHIPTOC 40...200000 ms 10

Operating curve type1) PHLPTOC Definite or inverse timeCurve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19

PHHPTOC Definite or inverse timeCurve type: 1, 3, 5, 9, 10, 12, 15, 17

PHIPTOC Definite time

1) For further reference, see the Operation characteristics table

Table 31. Three-phase directional overcurrent protection (DPHxPDOC)


Operation accuracy Depending on the frequency of the current/voltage measured: fn ±2 Hz

DPHLPDOC Current:±1.5% of the set value or ±0.002 × InVoltage:±1.5% of the set value or ±0.002 × UnPhase angle: ±2°

DPHHPDOC Current:±1.5% of the set value or ±0.002 × In(at currents in the range of 0.1…10 × In)±5.0% of the set value(at currents in the range of 10…40 × In)Voltage:±1.5% of the set value or ±0.002 × UnPhase angle: ±2°

Start time1)2) Minimum Typical Maximum

IFault = 2.0 × set Start value 39 ms 43 ms 47 ms



Retardation time

Table 32. Three-phase directional overcurrent protection (DPHxPDOC) main settings


Start value DPHLPDOC 0.05...5.00 × In 0.01

DPHHPDOC 0.10...40.00 × In 0.01

Time multiplier DPHxPDOC 0.05...15.00 0.01

Operate delay time DPHxPDOC 40...200000 ms 10

Operating curve type1) DPHLPDOC Definite or inverse timeCurve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19

DPHHPDOC Definite or inverse timeCurve type: 1, 3, 5, 9, 10, 12, 15, 17

Directional mode DPHxPDOC 1 = Non-directional2 = Forward3 = Reverse

-

Characteristic angle DPHxPDOC -179...180° 1

1) For further reference, see the Operating characteristics table

Table 33. Non-directional earth-fault protection (EFxPTOC)



EFLPTOC ±1.5% of the set value or ±0.002 × In

EFHPTOCandEFIPTOC

±1.5% of set value or ±0.002 × In(at currents in the range of 0.1…10 × In)±5.0% of the set value(at currents in the range of 10…40 × In)


EFIPTOC:IFault = 2 × set Start valueIFault = 10 × set Start value

16 ms11 ms

19 ms12 ms

23 ms14 ms

EFHPTOC and EFLPTOC:IFault = 2 × set Start value

23 ms

26 ms

29 ms



Retardation time

Table 34. Non-directional earth-fault protection (EFxPTOC) main settings


Start value EFLPTOC 0.010...5.000 × In 0.005

EFHPTOC 0.10...40.00 × In 0.01

EFIPTOC 1.00...40.00 × In 0.01

Time multiplier EFLPTOC and EFHPTOC 0.05...15.00 0.01

Operate delay time EFLPTOC and EFHPTOC 40...200000 ms 10

EFIPTOC 20...200000 ms 10

Operating curve type1) EFLPTOC Definite or inverse timeCurve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19

EFHPTOC Definite or inverse timeCurve type: 1, 3, 5, 9, 10, 12, 15, 17

EFIPTOC Definite time



ABB 31

Table 35. Directional earth-fault protection (DEFxPDEF)



DEFLPDEF Current:±1.5% of the set value or ±0.002 × InVoltage±1.5% of the set value or ±0.002 × UnPhase angle:±2°

DEFHPDEF Current:±1.5% of the set value or ±0.002 × In(at currents in the range of 0.1…10 × In)±5.0% of the set value(at currents in the range of 10…40 × In)Voltage:±1.5% of the set value or ±0.002 × UnPhase angle:±2°


DEFHPDEFIFault = 2 × set Start value

42 ms

46 ms

49 ms

DEFLPDEFIFault = 2 × set Start value

58 ms 62 ms 66 ms



Retardation time

Table 36. Directional earth-fault protection (DEFxPDEF) main settings


Start value DEFLPDEF 0.010...5.000 × In 0.005

DEFHPDEF 0.10...40.00 × In 0.01

Directional mode DEFxPDEF 1 = Non-directional2 = Forward3 = Reverse

-

Time multiplier DEFLPDEF 0.05...15.00 0.01

DEFHPDEF 0.05...15.00 0.01

Operate delay time DEFLPDEF 60...200000 ms 10

DEFHPDEF 40...200000 ms 10

Operating curve type1) DEFLPDEF Definite or inverse timeCurve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19

DEFHPDEF Definite or inverse timeCurve type: 1, 3, 5, 15, 17

Operation mode DEFxPDEF 1 = Phase angle2 = IoSin3 = IoCos4 = Phase angle 805 = Phase angle 88

-

1) For further reference, see the Operating characteristics table

Table 37. Negative-sequence overcurrent protection (NSPTOC)


Operation accuracy Depending on the frequency of the measured current: fn±2 Hz

±1.5% of the set value or ±0.002 × In


IFault = 2 × set Start valueIFault = 10 × set Start value

23 ms15 ms

26 ms18 ms

28 ms20 ms



Retardation time

Table 38. Negative-sequence overcurrent protection (NSPTOC) main settings


Start value NSPTOC 0.01...5.00 × In 0.01

Time multiplier NSPTOC 0.05...15.00 0.01

Operate delay time NSPTOC 40...200000 ms 10

Operating curve type1) NSPTOC Definite or inverse timeCurve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19


Table 39. Residual overvoltage protection (ROVPTOV)


Operation accuracy Depending on the frequency of the measured voltage: fn ±2 Hz

±1.5% of the set value or ±0.002 × Un


UFault = 2 × set Start value 48 ms 51 ms 54 ms



Retardation time

Table 41. Three-phase undervoltage protection (PHPTUV)


Operation accuracy Depending on the frequency of the voltage measured: fn ±2 Hz



UFault = 0.9 × set Start value 62 ms 66 ms 70 ms


Reset ratio Depends on the set Relative hysteresis

Retardation time

Table 44. Three-phase overvoltage protection (PHPTOV) main settings


Start value PHPTOV 0.05...1.60 × Un 0.01

Time multiplier PHPTOV 0.05...15.00 0.01

Operate delay time PHPTOV 40...300000 ms 10

Operating curve type1) PHPTOV Definite or inverse timeCurve type: 5, 15, 17, 18, 19, 20


Table 45. Positive-sequence undervoltage protection (PSPTUV)


Operation accuracy Depending on the frequency of the measured voltage: fn ±2 Hz



UFault = 0.99 × set Start valueUFault = 0.9 × set Start value

52 ms44 ms

55 ms47 ms

58 ms50 ms


Reset ratio Depends on the set Relative hysteresis

Retardation time

Table 47. Negative-sequence overvoltage protection (NSPTOV)


Operation accuracy Depending on the frequency of the voltage measured: fn±2 Hz



UFault = 1.1 × set Start valueUFault = 2.0 × set Start value

33 ms24 ms

35 ms26 ms

37 ms28 ms



Retardation time /f< ±5 mHz

df/dt ±50 mHz/s (in range |df/dt| /f<

Table 50. Frequency protection (FRPFRQ) main settings


Operation mode FRPFRQ 1 = Freq<2 = Freq>3 = df/dt4 = Freq< + df/dt5 = Freq> + df/dt6 = Freq< OR df/dt7 = Freq> OR df/dt

-

Start value Freq> FRPFRQ 0.9000...1.2000 × Fn 0.0001

Start value Freq< FRPFRQ 0.8000...1.1000 × Fn 0.0001

Start value df/dt FRPFRQ -0.2000...0.2000 × Fn/s 0.0025

Operate Tm Freq FRPFRQ 80...200000 ms 10

Operate Tm df/dt FRPFRQ 120...200000 ms 10

Table 51. Overexcitation protection (OEPVPH)



±2.5% of the set value or 0.01 × Ub/f

Start time 1)2) Frequency change Typically 200 ms (±20 ms)

Voltage change Typically 100 ms (±20 ms)

Reset time

Table 53. Three-phase thermal overload protection, two time constants (T2PTTR)



Current measurement: ±1.5% of the set value or ±0.002 x In (at currentsin the range of 0.01...4.00 x In)

Operate time accuracy1) ±2.0% of the theoretical value or ±0.50 s

1) Overload current > 1.2 x Operate level temperature

Table 54. Three-phase thermal overload protection, two time constants (T2PTTR) main settings


Temperature rise T2PTTR 0.0...200.0°C 0.1

Max temperature T2PTTR 0.0...200.0°C 0.1

Operate temperature T2PTTR 80.0...120.0% 0.1

Short time constant T2PTTR 6...60000 s 1

Weighting factor p T2PTTR 0.00...1.00 0.01

Current reference T2PTTR 0.05...4.00 × In 0.01

Operation T2PTTR 1 = on5 = off

-

Table 55. Loss of phase, undercurrent (PHPTUC)


Operation accuracy Depending on the frequency of the current measured: fn ±2 Hz


Start time Typically

Table 57. Stabilized and instantaneous differential protection for two-winding transformers (TR2PTDF)





Low stageHigh stage

36 ms21 ms

41 ms22 ms

46 ms24 ms



Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5, …

1) Current before fault = 0.0, fn = 50 Hz, results based on statistical distribution of 1000 measurements

2) Includes the delay of the output contact. When differential current = 2 × set operate value and fn = 50 Hz.

Table 58. Stabilized differential protection for two-winding transformers (TR2PTDF) main settings


High operate value TR2PTDF 500...3000 %Ir 10

Low operate value TR2PTDF 5...50 %Ir 1

Slope section 2 TR2PTDF 10...50% 1

End section 2 TR2PTDF 100...500 %Ir 1

Restraint mode TR2PTDF 5 = Waveform6 = 2.h + waveform8 = 5.h + waveform9 = 2.h + 5.h + wav

-

Start value 2.H TR2PTDF 7...20% 1

Start value 5.H TR2PTDF 10...50% 1

Operation TR2PTDF 1 = on5 = off

-

Winding 1 type TR2PTDF 1 = Y2 = YN3 = D4 = Z5 = ZN

-

Winding 2 type TR2PTDF 1 = y2 = yn3 = d4 = z5 = zn

-

Zro A elimination TR2PTDF 1 = Not eliminated2 = Winding 13 = Winding 24 = Winding 1 and 2

-


40 ABB

Table 59. Numerical stabilized low-impedance restricted earth-fault protection (LREFPNDF)



±2.5% of the set value or ±0.002 x In


IFault = 2.0 × set Operate value 37 ms 41 ms 45 ms



Retardation time

Table 62. High-impedance based restricted earth-fault protection (HREFPDIF) main settings


Operate value HREFPDIF 1.0...50.0%In 0.1

Minimum operate time HREFPDIF 40...300000 ms 1

Operation HREFPDIF 1 = on5 = off

-

Table 63. Circuit breaker failure protection (CCBRBRF)




Operate time accuracy ±1.0% of the set value or ±20 ms

Reset time1) Typically 40 ms

Retardation time

Table 66. Three-phase inrush detector (INRPHAR) main settings


Start value INRPHAR 5...100% 1

Operate delay time INRPHAR 20...60000 ms 1

Table 67. Arc protection (ARCSARC)


Operation accuracy ±3% of the set value or ±0.01 × In

Operate time Minimum Typical Maximum

Operation mode = "Light+current"1)2)

9 ms3)

4 ms4)12 ms3)

6 ms4)15 ms3)

9 ms4)

Operation mode = "Light only"2) 9 ms3)

4 ms4)10 ms3)

6 ms4)12 ms3)

7 ms4)

Reset time Typically 40 ms3)

Table 70. Load-shedding and restoration (LSHDPFRQ) main settings


Load shed mode LSHDPFRQ 1 = Freq<6 = Freq< OR df/dt8 = Freq< AND df/dt

-

Restore mode LSHDPFRQ 1 = Disabled2 = Auto3 = Manual

-

Start value Freq LSHDPFRQ 0.800...1.200 × fn 0.001

Start value df/dt LSHDPFRQ -0.200...-0.005 × fn/s 0.005

Operate Tm Freq LSHDPFRQ 80...200000 ms 10

Operate Tm df/dt LSHDPFRQ 120...200000 ms 10

Restore start Val LSHDPFRQ 0.800...1.200 × fn 0.001

Restore delay time LSHDPFRQ 80...200000 ms 10

Table 71. Multipurpose protection (MAPGAPC)


Operation accuracy ±1.0% of the set value or ±20 ms

Table 72. Multipurpose protection (MAPGAPC) main settings


Start value MAPGAPC -10000.0...10000.0 0.1

Operate delay time MAPGAPC 0...200000 ms 100

Operation mode MAPGAPC 1 = Over2 = Under

-

Table 73. Automatic switch-onto-fault (CVPSOF)


Operation accuracy Depending on the frequency of the voltage measured: fn ±2Hz

Current: ±1.5% of the set value or ±0.002 × InVoltage: ±1.5% of the set value or ±0.002 × Un


Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…

Table 74. Automatic switch-onto-fault logic (CVPSOF) main settings


SOTF reset time CVPSOF 0...60000 ms 10


44 ABB

Table 75. Underpower protection (DUPPDPR)


Operation accuracy 1) Depending on the frequency of the measured current and voltage:fn ±2 Hz

Power measurement accuracy ±3% of the set value or ±0.002 × SnPhase angle: ±2°

Start time2)3) Typically 45 ms



Operate time accuracy ±1.0% of the set value of ±20 ms

Suppression of harmonics -50 dB at f = n × fn, where n = 2, 3, 4, 5,…

1) Measurement mode = “Pos Seq” (default)2) U = Un, fn = 50 Hz, results based on statistical distribution of 1000 measurements

3) Includes the delay of the signal output contact

Table 76. Underpower protection (DUPPDPR) main settings


Start value DUPPDPR 0.01...2.00 × Sn 0.01

Operate delay time DUPPDPR 40...300000 ms 10

Pol reversal DUPPDPR 0 = False1 = True

-

Disable time DUPPDPR 0...60000 ms 1000

Table 77. Reverse power/directional overpower protection (DOPPDPR)


Operation accuracy 1)

Depending on the frequency of the measured current and voltage:f = fn ±2 Hz

Power measurement accuracy ±3% of the set value or ±0.002 × SnPhase angle: ±2°

Start time2)3) Typically 45 ms



Operate time accuracy ±1.0% of the set value of ±20 ms

Suppression of harmonics -50 dB at f = n × fn, where n = 2, 3, 4, 5,…

1) Measurement mode = “Pos Seq” (default)2) U = Un, fn = 50 Hz, results based on statistical distribution of 1000 measurements

3) Includes the delay of the signal output contact


ABB 45

Table 78. Reverse power/directional overpower protection (DOPPDPR) main settings


Start value DOPPDPR 0.01...2.00 × Sn 0.01

Operate delay time DOPPDPR 40...300000 ms 10

Directional mode DOPPDPR 2 = Forward3 = Reverse

-

Power angle DOPPDPR -90...90° 1

Table 79. Operation characteristics

Parameter Value (Range)

Operating curve type 1 = ANSI Ext. inv.2 = ANSI Very. inv.3 = ANSI Norm. inv.4 = ANSI Mod inv.5 = ANSI Def. Time6 = L.T.E. inv.7 = L.T.V. inv.8 = L.T. inv.9 = IEC Norm. inv.10 = IEC Very inv.11 = IEC inv.12 = IEC Ext. inv.13 = IEC S.T. inv.14 = IEC L.T. inv15 = IEC Def. Time17 = Programmable18 = RI type19 = RD type

Operating curve type (voltage protection) 5 = ANSI Def. Time15 = IEC Def. Time17 = Inv. Curve A18 = Inv. Curve B19 = Inv. Curve C20 = Programmable21 = Inv. Curve A22 = Inv. Curve B23 = Programmable


46 ABB

Control functions

Table 80. Synchronism and energizing check (SECRSYN)



Voltage:±3.0% of the set value or ±0.01 × UnFrequency:±10 mHzPhase angle:±3°

Reset time

Table 83. Tap changer control with voltage regulator (OLATCC)


Operation accuracy1) Depending on the frequency of the measured current: fn ±2 Hz

Differential voltage Ud = ±0.5% of the measured value or ±0.005 × Un (inmeasured voltages

Table 84. Tap changer control with voltage regulator (OLATCC) main settings


Auto parallel mode OLATCC 2 = Auto master3 = Auto follower5 = NRP7 = MCC

-

Band center voltage OLATCC 0.000...2.000 × Un 0.001

Line drop V Ris OLATCC 0.0...25.0% 0.1

Line drop V React OLATCC 0.0...25.0% 0.1

Stability factor OLATCC 0.0...70.0% 0.1

Load phase angle OLATCC -89...89° 1

Control delay time 1 OLATCC 1000...300000 ms 100

Control delay time 2 OLATCC 1000...300000 ms 100

Operation mode OLATCC 1 = Manual2 = Auto single3 = Auto parallel4 = Input control5 = Command

-

Custom Man blocking OLATCC 1 = Custom disabled2 = OC3 = UV4 = OC, UV5 = EXT6 = OC, EXT7 = UV, EXT8 = OC, UV, EXT

-

Delay characteristics OLATCC 0 = Inverse time1 = Definite time

-

Band width voltage OLATCC 1.20...18.00 %Un 0.01

Load current limit OLATCC 0.10...5.00 × In 0.01

Block lower voltage OLATCC 0.10...1.20 × Un 0.01

Runback raise V OLATCC 0.80...2.40 × Un 0.01

Cir current limit OLATCC 0.10...5.00 × In 0.01

LDC limit OLATCC 0.00...2.00 × Un 0.01

Lower block tap OLATCC -36...36 -

Raise block tap OLATCC -36...36 -

LCT pulse time OLATCC 500...10000 ms 100

LDC enable OLATCC 0 = False1 = True

-

Follower delay time OLATTC 6...20 s -


ABB 49

Condition monitoring and supervision functions

Table 85. Circuit-breaker condition monitoring (SSCBR)


Current measuring accuracy ±1.5% or ±0.002 × In(at currents in the range of 0.1…10 × In)±5.0%(at currents in the range of 10…40 × In)


Travelling time measurement +10 ms / -0 ms

Table 86. Current circuit supervision (CCSPVC)


Operate time 1)

Table 91. Runtime counter for machines and devices (MDSOPT)

Description Value

Motor runtime measurement accuracy1) ±0.5%

1) Of the reading, for a stand-alone relay, without time synchronization


ABB 51

Measurement functions

Table 92. Three-phase current measurement (CMMXU)



±0.5% or ±0.002 × In(at currents in the range of 0.01...4.00 × In)

Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…RMS: No suppression

Table 93. Sequence current measurement (CSMSQI)


Operation accuracy Depending on the frequency of the measured current: f/fn = ±2 Hz

±1.0% or ±0.002 × Inat currents in the range of 0.01...4.00 × In


Table 94. Residual current measurement (RESCMMXU)


Operation accuracy Depending on the frequency of the current measured: f/fn = ±2 Hz

±0.5% or ±0.002 × Inat currents in the range of 0.01...4.00 × In


Table 95. Three-phase voltage measurement (VMMXU)


Operation accuracy Depending on the frequency of the voltage measured: fn ±2 HzAt voltages in range 0.01…1.15 × Un

±0.5% or ±0.002 × Un


Table 96. Single-phase voltage measurement (VAMMXU)



±0.5% or ±0.002 × Un



52 ABB

Table 97. Residual voltage measurement (RESVMMXU)


Operation accuracy Depending on the frequency of the measured voltage: f/fn = ±2 Hz

±0.5% or ±0.002 × Un


Table 98. Sequence voltage measurement (VSMSQI)



±1.0% or ±0.002 × Un


Table 99. Three-phase power and energy measurement (PEMMXU)


Operation accuracy At all three currents in range 0.10…1.20 × InAt all three voltages in range 0.50…1.15 × UnAt the frequency fn ±1 Hz

±1.5% for apparent power S±1.5% for active power P and active energy1)

±1.5% for reactive power Q and reactive energy2)±0.015 for power factor


1) |PF| >0.5 which equals |cosφ| >0.52) |PF| 0.5

Table 100. Frequency measurement (FMMXU)


Operation accuracy ±10 mHz(in measurement range 35...75 Hz)


ABB 53

Power quality functions

Table 101. Voltage variation (PHQVVR)


Operation accuracy ±1.5% of the set value or ±0.2% of reference voltage

Reset ratio Typically 0.96 (Swell), 1.04 (Dip, Interruption)

Table 102. Voltage variation (PHQVVR) main settings


Voltage dip set 1 PHQVVR 10.0...100.0% 0.1



Voltage swell set 1 PHQVVR 100.0...140.0% 0.1



Voltage Int set PHQVVR 0.0...100.0% 0.1

VVa Dur Max PHQVVR 100...3600000 ms 100

Table 103. Voltage unbalance (VSQVUB)


Operation accuracy ±1.5% of the set value or ±0.002 × Un


Table 104. Voltage unbalance (VSQVUB) main settings


Operation VSQVUB 1 = on5 = off

-

Unb detection method VSQVUB 1 = Neg Seq2 = Zero Seq3 = Neg to Pos Seq4 = Zero to Pos Seq5 = Ph vectors Comp

-


54 ABB

Other functions

Table 105. Pulse timer (PTGAPC)



Table 106. Time delay off (8 pcs) (TOFPAGC)



Table 107. Time delay on (8 pcs) (TONGAPC)




ABB 55

21. Local HMIThe relay supports process information and status monitoringfrom the relay's local HMI via its display and indication/alarmLEDs. The local LHMI also enables control operations for theequipment connected and controlled by the relay, either viadisplay or via manual push buttons available on the local HMI.

LCD display offers front-panel user interface functionality withmenu navigation and menu views. In addition, the displayincludes a user-configurable two-page single-line diagram(SLD) with a position indication for the associated primaryequipment and primary measurements from the process. TheSLD can be modified according to user requirements by usingGraphical Display Editor in PCM600.

The local HMI also includes 11 programmable LEDs. TheseLEDs can be configured to show alarms and indications asneeded by PCM600 graphical configuration tool. The LEDsinclude two separately controllable colors, red and green,making one LED able to indicate better the different states ofthe monitored object.

The relay also includes 16 configurable manual push buttons,which can freely be configured by the PCM600 graphicalconfiguration tool. These buttons can be configured to controlthe relay's internal features for example changing setting group,triggering disturbance recordings or changing operation modesfor functions or to control relay external equipment, for examplelowering or raising tap changer, via relay binary outputs. Thesebuttons also include a small indication LED for each button.This LED is freely configurable, making it possible to use pushbutton LEDs to indicate button activities or as additionalindication/alarm LEDs in addition to the 11 programmableLEDs.

The local HMI includes a push button (L/R) for the local/remoteoperation of the relay. When the relay is in the local mode, therelay can be operated only by using the local front-panel userinterface. When the relay is in the remote mode, the relay canexecute commands sent remotely. The relay supports theremote selection of local/remote mode via a binary input. Thisfeature facilitates, for example, the use of an external switch atthe substation to ensure that all the relays are in the local modeduring maintenance work and that the circuit breakers cannotbe operated remotely from the network control center.

GUID-7A40E6B7-F3B0-46CE-8EF1-AAAC3396347F V1 EN

Figure 8. Example of the LHMI

22. Mounting methodsBy means of appropriate mounting accessories, the standardrelay case can be flush mounted, semi-flush mounted or wallmounted.

Further, the relays can be mounted in any standard 19”instrument cabinet by means of 19” mounting panels availablewith cut-outs for one relay.Alternatively, the relays can bemounted in 19” instrument cabinets by means of 4U Combiflexequipment frames.

For routine testing purposes, the relay cases can be equippedwith test switches, type RTXP 24, which can be mounted sideby side with the relay cases.

Mounting methods• Flush mounting• Semi-flush mounting• Rack mounting• Wall mounting• Mounting to a 19" equipment frame• Mounting with an RTXP 24 test switch to a 19" rack

Panel cut-out for flush mounting• Height: 162 ±1 mm• Width: 248 ±1 mm


56 ABB

48

153

177

160

262,2246

GUID-89F4B43A-BC25-4891-8865-9A7FEDBB84B9 V1 EN

Figure 9. Flush mounting

98

280

160

177

246

103

GUID-1DF19886-E345-4B02-926C-4F8757A0AC3E V1 EN

Figure 10. Semi-flush mounting

48

482.6 (

19")

160

246

177

153

GUID-D83E2F4A-9D9B-4400-A2DC-AFF08F0A2FCA V1 EN

Figure 11. Rack mounting

259

186

318

GUID-65A893DF-D304-41C7-9F65-DD33239174E5 V1 EN

Figure 12. Wall mounting

23. Relay case and plug-in unitThe relay cases are assigned to a certain type of plug-in unit.For safety reasons, the relay cases for current measuring relaysare provided with automatically operating contacts for short-circuiting the CT secondary circuits when a relay unit iswithdrawn from its case. The relay case is further provided witha mechanical coding system preventing the current measuringrelay units from being inserted into relay cases intended forvoltage measuring relay units.


ABB 57

24. Selection and ordering dataThe relay type and serial number label identifies the protectionrelay. The label is placed above the local HMI on the upper partof the plug-in-unit. An order code label is placed on the side ofthe plug-in unit as well as inside the case. The order codeconsists of a string of letters and digits generated from therelay's hardware and software modules.

Use ABB Library to access the selection and orderinginformation and to generate the order number.

Product Selection Tool (PST), a Next-Generation Order NumberTool, supports order code creation for ABB DistributionAutomation IEC products with emphasis on, but not exclusivelyfor, the Relion product family. PST is an easy-to-use, online toolalways containing the latest product information. The completeorder code can be created with detailed specification and theresult can be printed and mailed. Registration is required.

# Description

1 IED

620 series IED (including case) N

Complete Relay with conformal coating 5

2 Standard

IEC B

CN C

3 Main application

Transformer protection and control T

4 Functional application

Example configuration N

5-6 Analog inputs and outputs

8I (I0 1/5 A) + 6U + 8BI + 13BO + 2RTD in + 1mA in AA

7-8 Optional board

Optional I/Os 8BI+ 4BO AA

Optional RTDs 6RTD in + 2mA in AB

Optional Fast I/Os 8BI + 3HSO AC

No optional board NN

N B T N A A N N A B C 1 B N N 1 1 G

GUID-87D41197-0C6A-407B-9ED4-F27D96CDB2D5 V2 EN


58 ABB

http://search.abb.com/library/Download.aspx?DocumentID=1MRS758396&LanguageCode=en&DocumentPartId=&Action=Launchhttps://abbtm.fi.abb.com/PST/#/

If serial communication is chosen, please choose a serial communication module including Ethernet (for example “BC”) if a service bus for PCM600 or the WebHMI is required.

9 -

10

Communication (Serial/Ethernet)

(1xLC)AA

Documents

Product Guide RET620 Transformer Protection and ControlMinimum pulse timer (2 pcs, minute resolution) TPMGAPC 2 Pulse timer (8 pcs) PTGAPC 2 Transformer Protection and Control 1MRS757846