kva mva - ge grid · pdf filekva mva mip mig mgc g60 ... 100% stator ground fault protec-tion...

GENERATOR Selector Guide

PR

OT

EC

TIO

NC

ON

TR

OL

MO

NIT

OR

ING

489 DGP

KVA MVA

MGCMIGMIP G60

FEATURES DEVICE 489 DGP G60 LPS-O MGC MIG MIP

Overspeed 14

Distance, Phase 21P

Overexcitation, Volts/Hertz 24

Synchronism Check or Synchronizing 25

Undervoltage, Phase 27P

Reverse Power 32

Undercurrent 37

Loss of Field 40

Reverse-Phase or Current Unbalance 46

Reverse Phase Sequence Voltage 47

Thermal Image 49

Breaker Failure 50BF

IOC, Ground/Neutral/Phase 50G/N/P G/N/P G/N/P P G/PTOC, Ground/Neutral/Phase 51G/N/P G/N/P G/N G/N/P N/P G/PTOC, Voltage Restrained 51V

Overvoltage, Neutral/Phase 59N/P N/P P N/P N/P100% Stator Ground 64 27TN

Current Directional, Neutral/Phase 67/N/P N/P N/P

Loss of Mains 78Over and Underfrequency 81O/U O/U O/U O/U O/UDifferential, Stator 87S

Voltage Transformer Fuse Failure VTFF

Accidental Energization

Sequential Trip Logic

Power Supply, AC or DC AC/DC DC AC/DC DC AC/DC AC/DC AC/DCRedundant Power Supplies

CT Inputs 5A/1A 5/1 5/1Self-Test Failure Contact

Settings Groups 2 1 8 4 2

Flash Memory

Contact Inputs (Fixed) – up to 2 6Contact Inputs (Programmable) – up to 7 3 48 12 2 2Contact Outputs (Fixed) – up to 1 8 4 5 2 2Contact Outputs (Programmable) – up to 5 19 48 24 4 4Virtual Inputs 32Virtual Outputs 64Display

Keypad

Trip/Coil Supervision T 22Programmable Logic

User-Programmable LEDs

Timers

Digital Counters

Digital Elements

IRIG-B Input

Analog Outputs 4Current – RMS

Current – Phasor

Current – Demand

Voltage – RMS

Voltage – Phasor Phase-Phase

Power Factor

Symmetrical Components

MW, MVA, Mvar

MW, MVA, Mvar Demand

Energy Metering

Frequency

Analog Inputs 4Fault Report

Event Recorder

Oscillography (Waveform Capture)

Data Logger

Interface Program

RS232 Port 1 2 1 3 1 1RS485 Port 2 1/2 2 1 1Baud Rate 19.2k 115k 9.6k 19.2k 19.2k10 BaseF Port 1/2/3ModBus® Protocol

ModBus® User Map

DNP3 Protocol

UCA2/MMS Protocol

TCP/IP

CO

MM

UN

ICA

TIO

NS

LPS-O

28 www.GEindustrial.com/Multilin

3

29

3

COMINGSOON

Versatile relay for the

protection of AC generators.

UR Generator Management RelayTM

Features and Benefits

FlexLogic™ and distributed FlexLogic™

Virtual and expandable I/Os to reducehardware costs

User-programmable LEDs

User-definable display messages

Flash memory for field upgrades

Common drawout modules to reducespare parts costs

Multiple settings groups

Applications

Any size of AC generator driven bysteam, gas and hydraulic turbine

Stand-alone or component in automatedsubstation control system

enerVista.com compatible (see page 275)

Protection and Control

100% stator ground differential

Loss of excitation

Reverse and low forward power

Current unbalance

Overexcitation

FlexElement™ universal comparators

Distance backup

Monitoring and Metering

Current, voltage, power, power factor,frequency, energy

Contact input and output status

User Interfaces

URPC software for setting, monitoring

RS232, RS485 and Ethernet ports

GE Multilin

ProtectionThe G60, a digital GeneratorManagement Relay, is designedspecifically for AC generators ofany size, driven by steam, gas orhydraulic turbine.

As part of the Universal RelayFamily, the G60 provides superiorprotection which includes:

100% Stator Ground

100% stator ground fault protec-tion is provided by an adaptivevoltage differential featureresponding to the unbalance ofthe third harmonic at the machineterminals and at the neutral point.The protection could be supple-mented or replaced by a thirdharmonic undervoltage functionresponding to the voltage at theneutral side of the machine.

Loss of Excitation

Impedance based two-stageprotection responds to positivesequence voltage and current.

Sensitive Directional Power

Available for reverse power andlow forward power protection.

Current Unbalance

Meets ANSI standards to mini-mize risk of heat damage causedby unbalance in the generator.

Overcurrent Protection

IOC and TOC functions availablefor phase, ground, and neutral.Time curves provided includethree IEEE, four IEC, four GE IAC,I2t, definite time and two user-programmable curves. Phase TOCfunctions use voltage restraint.

Overexcitation Protection

Provided through a Volts/Hertzfunction with programmableinverse time characteristic.

Frequency Protection

Over and underfrequency protec-tion available.

Voltage Protection

Over and undervoltage protectionprovided.

Out-of-Step Tripping

Integrated out-of-step tripping andpower swing blocking functions useeither two or three characteristics totrace the positive sequence imped-ance trajectory to detect an out-of-step condition. Programmable tripaction (instantaneous or delayed).

Synchronism Check

Two independent synchronismcheck elements monitor differ-ences in voltage magnitudes,phase angles and frequencies.

User-Definable Protection

Functions

The G60 relay includes 16 universal comparators calledFlexElements™ that can be pro-grammed to respond to changesin any measured value.

G60 UR Generator Management RelayTM

www.GEindustrial.com/Multilin30

3

830710A6.CDR

32 50/27 50P40

50G 51G

64TN

50N 51P 51N 46 67P 67N 68 78

24 59P 59N 81U27P 59_2 81O

Metering

TRIP

CLOSE

27TN 59Aux27Aux

G60 Generator Management Relay

G

52

R

87S

25

Functional Block Diagram

Typical Wiring


www.GEindustrial.com/Multilin 31

3

830700AP.CDR

1

PowerSupply

9

CPU

MODULE ARRANGEMENT (Rear View)JU MX LW KV BHT DN GS P FR

No. 10AWGMinimum

GROUND BUS

AC or DC

DC

( D

C O

NLY

)

Groundat Remote Device

Shieldedtwisted pairs

Co-axial

RS-232

DB-9

(front)

UR COMPUTER

1

TXD RXDRXD TXD

SGND SGND

1 832

20764522

25 PINCONNECTOR

9 PINCONNECTOR

2 23 34 45 56 67 78 89 9

CONTACTS SHOWNWITH NO

CONTROL POWER

6

I/O

8

VT/CT

8

CT

TC

TC

2

1

VO

LTA

GE

SU

PV

.V

OLT

&C

UR

RE

NT

SU

PV

.

G60UR GeneratorManagement Relay

GE Multilin

CONTACT IN 5aCONTACT IN 5cCONTACT IN 6aCONTACT IN 6c

COMMON 5b

CONTACT IN 7aCONTACT IN 7cCONTACT IN 8aCONTACT IN 8c

COMMON 7b

SURGE

6a

8a

5b

7b

8b

5aH

H

H

H

H

H

H

H

H

H

H

HHHHH

HHHHH

H

HH

H

H

H

H

H

H

H

H

H

H

H

H

H

7a

6c

8c

5c

7c

1a

2b

1c

1b

2c

2a

4a

4c

3b

3a

4b

3c

1

2

3

4

DIGITAL I/O 6G I

V

I

V

I

V

I

V

CRITICALFAILURE

48 VDCOUTPUT

CONTROLPOWER

HILO

PO

WE

R S

UP

PLY

1

FILTERSURGE

3a

1b

8a

6b

8b

6a

B

B

B

B

B

B

B

B

B

B

3b

1a

2b

5b

9A

COM

COM

C

PU

D3b

D4b

D5b

D2a

D3a

D4a

D5a

D6a

D7b

RS485COM 1

RS485COM 2

IRIG-B

SURGE

1c

4a

FF FFFFFFFFFFFFFFFFFF

8c

8a

3c

5a

5c

7c

CURRENT INPUTS6

a

7a

6c

2c

VX

VA

VB

VC

4c

1a

4b

1b

2a

3a

2b

3b

VOLTAGE INPUTS8A / 8B

VX

VA

VB

VC

F FFFFF

5a

5c

7c

6a

7a

6c

VA

VB

VC

VOLTAGE INPUTS

VA

VB

VC IA IB IC IGIA5

IA1

IB5

IC5

IG5

IB1

IC1

IG1

TYPICAL CONFIGURATIONTHE AC SIGNAL PATH IS CONFIGURABLE

POSITIVE WATTSOPEN DELTAVT CONNECTION (ABC)

3c

4c

4b

4a

1c

1a

MMMMMMMMMMMM

1b

3b

CURRENT INPUTS8E / 8F

2a

3a

2b

2c

IA IB IC IGIA5

IA1

IB5

IC5

IG5

IB1

IC1

IG1

ABC

R

MODULES MUST BEGROUNDED IF TERMINAL IS

PROVIDED



3

Ordering

G60 * 00 HC * F** H** M** P** U** W** For full sized horizontal mountG60 * 00 VF * F** H** M** P** For reduced size vertical mountG60 Base unit

A RS485 + RS485 CPU C RS485 + 10BaseF (MMS/UCA2 and ModBus® TCP/IP) CPUD RS485 + redundant 10BaseF (MMS/UCA2 and ModBus® TCP/IP) CPU

00 No software optionsHC Horizontal mountVF Faceplate with keypad and display

H 125/250V AC/DC power supplyL 24/48V (DC only)

8A 8A Standard 4CT/4VT8B 8B Sensitive Ground 4CT/4VT8C 8C Standard 8CT8D 8D Sensitive Ground 8CT

XX XX XX XX No module6A 6A 6A 6A 6A 2 Form A (voltage w/opt current) and 2 Form C outputs, 8 digital inputs6B 6B 6B 6B 6B 2 Form A (voltage w/opt current) and 4 Form C outputs, 4 digital inputs6C 6C 6C 6C 6C 8 Form C outputs6D 6D 6D 6D 6D 16 digital inputs6E 6E 6E 6E 6E 4 Form C outputs, 8 digital inputs6F 6F 6F 6F 6F 8 Fast Form C outputs6G 6G 6G 6G 6G 4 Form A (voltage w/opt current) outputs, 8 digital inputs6H 6H 6H 6H 6H 6 Form A (voltage w/opt current) outputs, 4 digital inputs6K 6K 6K 6K 6K 4 Form C and 4 Fast Form C outputs6L 6L 6L 6L 6L 2 Form A (current w/ opt voltage) and 2 Form C outputs, 8 digital inputs

6M 6M 6M 6M 6M 2 Form A (current w/ opt voltage) and 4 Form C outputs, 4 digital inputs6N 6N 6N 6N 6N 4 Form A (current w/ opt voltage) outputs, 8 digital inputs6P 6P 6P 6P 6P 6 Form A (current w/ opt voltage) outputs, 4 digital inputs6R 6R 6R 6R 6R 2 Form A (no monitoring) and 2 Form C outputs, 8 digital inputs6S 6S 6S 6S 6S 2 Form A (no monitoring) and 4 Form C outputs, 4 digital inputs6T 6T 6T 6T 6T 4 Form A (no monitoring) outputs, 8 digital inputs6U 6U 6U 6U 6U 6 Form A (no monitoring) outputs, 4 digital inputs5C 5C 5C 5C 5C 8 RTD inputs5E 5E 5E 5E 5E 4 DCmA inputs, 4 RTD inputs select a maximum of 45F 5F 5F 5F 5F 8 DCmA inputs

™Generator Management Relay is a trademark of GE Multilin.

G60 GuideformSpecificationsFor an electronic version of the G60guideform specifications, pleasevisit: www.GEindustrial.com/Multilin/specs, fax your request to 905-201-2098 or email to [email protected].

Monitoring andMeteringAdvanced metering functions arecommon across the UR platform(see page 7). The G60 providesadditional specific monitoringand metering that includes:

Metering

Voltage phasors (both magnitudeand phase angle), voltagesymmetrical components, currentphasors, current symmetricalcomponents, current true one-cycle RMS value, active, reactive,

apparent power, power factor (allpower values per phase and total)energy, and frequency are meas-ured. These signals are availablefor local or remote display usingcommunications, and can bestored in the oscillography recordor data logger.

www.enerVista.com

enerVista enabledenerVista enabled See page 275.Accessories

Interactive UR Training CD-ROM available. Visitwww.GEindustrial.com/multilin/trainingcd to order.

33

3

Economical protection, monitoring

and metering for generators.

SR Generator Management RelayTM


Configurable analog output channels

Digital inputs for protection, control ordiagnostic functions

Data communications from 300 to19,200 bps

Multiple communications ports

Event recording (40 events)

Oscillography (64 cycles)

Drawout construction

Applications

25, 50 or 60 Hz synchronous or inductiongenerators

Primary, backup and co-generatorapplications



Phase differential

100% stator ground

Overcurrent, over and undervoltage


RMS and negative sequence current,voltage

Three-phase power and temperature

User Interfaces

40 character display with full keypad

RS232 and RS485 ports

URPC functionality

GE Multilin

489 SR Generator Management RelayTM


3

808783E6.cdr

87G

27TN59GN

49

50

46

86

49

12

38

50BF

Outputrelays

Trip CoilSupervision

RS485RS485

Analoginputs

Analogoutputs

Outputrelays

489

RS232

+

+

-

-4

4

6

52

GENERATOR

41

39

76

50/51GN

60FL

51V

50/27

32

21

40

40Q

24

59

810

81U

27

47

67

ProtectionThe 489 Generator ManagementRelay is an economical choice forprotection, metering and monitor-ing of synchronous or inductiongenerators of 25, 50 or 60 Hz. Itcan be used in primary, backupand co-generation applications.Protection features include:

Machine Fault Protection

A dual slope percentage differen-tial element and an IOC elementprotect against machine faultsduring operation and throughstartup respectively.


Dual slope percentage differential.

Stator Ground Protection

In addition to a ground overcur-rent element, the 489 comparesthe machine neutral voltage andground current to determine ifground directional faults arewithin or outside the generator.100% stator ground fault protec-

tion is provided through an over-voltage element and an adaptiveelement.

Stator Thermal Protection

The stator RTDs are monitored toprovide stator thermal protectionduring running overload condi-tions. Additionally, the RTDs votefor high reliability. The thermalmodel overload curve may bebiased by the current unbalanceand/or the hottest stator RTD.Machine cooling is simulatedusing exponential decay of thethermal capacity used register. Thethermal overload curve may alsobe used to provide start-up protec-tion for an induction generator.

OverspeedDistanceVolts/HzUndervoltageInadvertent generator energizationReverse power/low forward powerBearing overtemperature (RTD)Bearing vibration (analog inputs)Loss of excitation (impedence)Loss of field (reactive power)Negative sequence overcurrent (I2t)Voltage phase reversalStator thermal (RTD/thermal model)High-set phase overcurrentBreaker failure detectionOffline overcurrentGround overcurrentVoltage restrained phase overcurrent Overvoltage100% stator groundVT fuse failure Ground directionalOverexcitation (analog input)Overfrequency/underfrequencyElectrical lockoutPercentage differentialSequential tripping logicTrip coil supervision

12212427

50/2732383940

40Q46474950

50BF50

50/51GN51V59

59GN/27TN60FL67768186

87G

Sync

hron

ous

Indu

ctio

n

489 Application

OPERATEREGION

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

00 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

I OP

ER

AT

E (

mu

ltip

les

of

CT

)

I RESTRAINT (multiples of CT) 808790A2.cdr

Slope 1 = 10%

Slope 2 = 20%

Minimum Pickup = 0.10 x CT

Bearing Protection

Any of the 12 RTD inputs may beconfigured to monitor and protectagainst bearing overtemperatureconditions. Two RTDs can vote togive higher reliability. Additionally,four analog inputs can be config-ured to monitor bearing vibrationtransducers. This provides alarmor trip functions perfect for smallermachines.

Excitation System

Protection elements includeoverexcitation, over and under-voltage. Alarm or trip functionsmay be activated by definite orinverse time curves. Loss of fieldprotection is provided via loss ofexcitation and reactive power.

Rotor Thermal Protection

A definite time alarm and inverseTOC curve trip protect the gener-ator rotor from overheatingcaused by negative sequencecurrents. The rating for bothcontinuous and short time opera-tion is defined by the equation:K=I2t. A variable reset rateprovides a thermal memory ofprevious unbalance conditions.

Negative sequence inverse TOC.

System Backup Protection

Three voltage restrained overcur-rent elements provide backupprotection for system faults. Thepickup level for the inverse timecurves are adjusted in conjunc-tion with the measured phase tophase voltage.

Voltage restraint characteristic.

High-set phase overcurrentprovides backup protection for onor offline elements. If any individ-ual phase current exceeds thepickup level, a trip will occur.

Distance protection uses two zonesof mho phase to phase protection(total of six elements), which isintended as a backup for primaryline protection against internal andunit transformer faults.

Sequential Tripping Logic

During routine shutdown, and forless critical trips, the sequentialtrip function can be used toprevent overspeed. Turbine valvestatus is monitored via digitalinput. When the valve is closed,either low forward power orreverse power will trip the breakeronce the generator output hasfallen below the programmed level.

Abnormal Frequency

Alarm functions for over andunderfrequency are included. Ifoperator action is not taken tocorrect the situation, a trip willoccur if conditions persist orbecome more severe.

Operational Failures

On a total or partial loss of theprime mover (if the power gener-ated is less than the no-loadlosses of the machine), realpower will start flowing back intothe generator. The reverse powerfunction can be set to trip thegenerator when it begins motor-ing. Accidental energizationprotection limits damage if thegenerator is accidentally placedonline while it is shutdown.

Overspeed

Twenty-four VDC power is provid-ed for mounting a probe orsensor near the shaft key orkeyway, with an assignable digi-tal input configured as atachometer to monitor the probeoutput signal.

The 489 can monitor speed via an assignableinput.

Monitoring Protection

With breaker failure enabledwhen the 489 initiates a trip andgenerator current does not dropto zero after the pre-set timedelay, a breaker failure alarm willoccur. When the breaker is closed,the trip coil circuit monitors itselffor a break in continuity, whichtriggers a trip coil monitor alarm.VT fuse failure triggers an alarmand disables features that usevoltage measurements.

Monitoring andMeteringThe 489 features advancedmetering and event recordingfunctions which include:

Metering Functions:

Complete monitoring functionsinclude:

Current Voltage Power: kW kvar kVA Energy use: MWh Mvarh Power factor Frequency Four analog inputs

Demand and peak demand func-tions include:

Current Power: kW kvar kVA



3

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

00 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Cu

rve

Pic

kup

Mu

ltip

lier

Phase-Phase Voltage / Rated Phase-Phase Voltage 808792A2.cdr

SENSOR

ROTATING SHAFT

808755E2.dwg

TO 489DIGITAL

INPUT

0.1

1

10

100

1000

0.01 0.1 1 10 100

K=1.0 4.0 15 40 100

Tim

e (S

eco

nd

s)

Negative Sequence Current / Rated Current808791A2.cdr

Communications

A front panel RS232 port and tworear panel RS485 ports supportModBus® RTU and DNP 3.0 proto-col. The RS232 port can transmitdata at 9600 bps, while the twoRS485 ports are variable from300 to 19,200 bps. Data may beaccessed from all three portssimultaneously and independently.All measured values are alsoavailable via the four analogoutputs.

A typical communications setupcould include a programmablelogic controller (PLC) using thefour analog outputs for controlfunctions. The front panel RS232port could be used for local inter-rogation and troubleshooting.One of the 485 ports could beused to connect a DCS or SCADAsystem, for continuous onlinemonitoring by the operationspersonnel. The second RS485port could be wired to a modem,which would be used for off-siteinterrogation of the 489 by engi-neering personnel.

Data is available from the 489 via threecommunications ports and four analog inputs.

808766E4.cdr

MODEM

SCADA/DCS

PLC

4 ANALOGOUTPUTS

AUXILIARYRS485

FRONT RS232

COMPUTERRS485

489 PC

489 PC489 Generator Management Relay™

489 IN SERVICE BREAKER OPEN R1 TRIP

R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE

SETPOINT ACCESS BREAKER CLOSED

COMPUTER RS232 HOT STATOR

MESSAGE

VT FAILURE

BREAKER FAILURE

PROGRAM PORTSETPOINT 7 8 9

4 5 6

1 2 3

. 0 HELP

MESSAGE

VALUE

ACTUAL

ESCAPE

ENTER

RESET

NEXT

RESETPOSSIBLE

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS

489 STATUS GENERATOR STATUS OUTPUT RELAYS

NEG. SEQUENCE

GROUND

LOSS OF FIELD

A = 0 C = 0B = 0 AMPS

All measured quantities can beviewed on the front panel display,through the communicationsports, or through one of the fouranalog outputs.

Event Recording

The 489 records and timestampsthe last 40 events, their cause andlast measured parameters. Alltripping functions are classed asevents. Alarm functions may beselectively chosen as events. Allof the 489 event data may beaccessed via the three communi-cations ports or viewed on thefront panel display to help withtroubleshooting.

Oscillography

The 489 samples the current andvoltage inputs at a rate of 12times per cycle. These samplesare stored in a configurable bufferup to 64 cycles long. The triggerposition setpoint allows the userto define how much of the buffercycles are pre and post trigger.

The trace memory may beextracted from the relay throughthe communications ports. It maybe displayed using the 489PCsoftware provided with the relay.This allows the user to examinemagnitudes and phase relation-ships of the measured signalswhen troubleshooting.

Oscillography data can be displayed usingthe 489PC program.

Self-Test

The 489 initiates a self-test atpower up and continues in thebackground during operation. Aself-test failure triggers an alarm.

Inputs and OutputsThe 489 offers a multitude ofconnections for analog and digi-tal input and output.

Analog I/Os

The four input channels monitoredby the 489 can be used for func-tions such as the protection andmonitoring of bearing vibration.The four output channels can beconfigured to any measuredparameter.

Digital Inputs

Seven assignable digital inputscan be used for functions such asa tachometer for overspeedcontrol.

RTD Inputs

Twelve RTD inputs allow the userto monitor both stator and bear-ing temperature. A voting featureallows two RTDs monitoring the same device to vote for highreliability.

Output Relays

The 489 has six output relays: onetrip, three auxiliary, one alarm,and one self-test relay. LEDs onthe front panel show the status ofeach output.

User InterfacesThe 489 allows users ease ofaccess through:

Keypad and Display

The front panel features a 40character display and a keypadthat includes full numeric keysand control keys.

LED Indicators

The front panel features 22 LEDindicators. Eight of these indicate489 status, eight indicate genera-tor status, and six indicate theoutput relay status.

IRIG-B Input

An IRIG-B input is provided fortime synchronization via satellitesignal.



3


R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE



MESSAGE

VT FAILURE

BREAKER FAILURE


4 5 6

1 2 3

. 0 HELP

MESSAGE

VALUE

ACTUAL

ESCAPE

ENTER

RESET

NEXT

RESETPOSSIBLE

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS


NEG. SEQUENCE

GROUND

LOSS OF FIELD

EFGH

1

LOWER

ELOWER

EUPPER

FUPPER

F

UPPER

GUPPER

G

LOWER

HLOWER

H

R1 TRIP NC

R1 TRIP NO

R2 AUX COM

R3 AUX NC

R3 AUX NO

R4 AUX.COM

R5 ALARMNC

R5 ALARMNO

R6 SERVICECOM

NUETRALVT COM

NUETRALVT

TRIP COIL SUPERVISION+

IRIG-B+

IRIG-B-R1 TRIP COM

R2 AUX NO

R2 AUX NC

R3 AUX COM

R4 AUXNO

R4 AUX.NC

R5 ALARMCOM

R5 SERVICE NO

R6 SERVICENC

TRIP COILSUPERVISION-

PHASE VT COM

PHASE A VT

Ia NEUTRALCT

Ib NEUTRALCT

Ic NEUTRALCT

IA OUT CT

IB OUT CT

IC OUT CT

Ia NEUTRALCT

Ib NEUTRALCT

Ic NEUTRALCT

IA OUT CT

IB OUT CT

IC OUT CT

1A GROUNDCT

1A GROUNDCT

GROUND(HGF)CT

GROUND(HGF)CT

FILTERGROUND

SAFETYGROUND

PHASE B VT

PHASE C VT

CONTROLPOWER -

CONTROLPOWER +

2 3 4 5 6 7 8 9 10 11 12

A1

B1

B2

B3

B4

RTDSHD

COM

-

+AUX.RS485

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 -COM

-COMANSHOANALOG OUTPUTS ANALOG INPUTS

+ - COM#1 #2 #3 #4 #5 #6 #7SW com

+24Vdc

#1+ #2+ #3+ #4+ #1+#2+#3+#4+

COMP RS485ASSIGNABLE INPUTS

+24Vdc

A18 A19 A20 A21 A22 A23 A24 A25 A26 A27

C1+

+

C2ACCESS

BREAKER STATUS

-

-

C3

C4

D27D26D25D24D23D22D21D20D19D18D17D16

RTD6RTD5RTD4RTD3RTD2RTD1

RTD7 RTD8 RTD9 RTD10 RTD11 RTD12

D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1

LOW VOLTAGE INPUTS, DO NOT HI-POT!

489GENERATOR MANAGEMENT RELAYTM

808784E9.cdr

DISPLAYForty character LCD display for setpoint programming, monitoring, status, and fault diagnostics.Up to twenty scrolling messagesmay be defined as the default display.

OUTPUT RELAYSIndicates any operation of the489 output relays.

GENERATOR STATUSIndicates if the generator is online or offline. Also indicates pickups of several protective features.

TRIP COIL SUPERVISIONMonitors the trip circuit for continuitywhen the generator is online andalarms if that continuity is broken.

KEYPADNumeric keys allow for simpleentry of setpoint values.Control keys allow simplenavigation through setpointand actual value messagestructures.Help key provides contextsensitive help messages.

ANALOG SIGNALSFour isolated 4-20 mA analog outputsmay be used to replace costlytransducers. They may be fieldprogrammed to reflect any measured parameter.Four 0-1 or 4-20 mA analog inputs maybe used to monitor any transducersignal. Possible applications includevibration and field current monitoring.

DIGITAL INPUTSAccess jumper input providessetpoint programming security.Breaker status input tells 489 ifthe generator is online or offline.Seven assignable digital inputs maybe field programmed for a variety offunctions including tachometer.

GROUNDSeparate safety and filter ground.All inputs meet C37.90 EMI, SWC,RFI interference immunity.

CT INPUTSSeven CT inputs provide three-phase output, three-phase neutral and ground current sensing.

AC/DC CONTROL POWERUniversal power supply90-300 VDC 70-265 VAC

PROGRAM PORTThe front panel RS232 port may be connected to a PC for localinterrogation, downloadingsetpoint files, and upgradingproduct firmware.

489 STATUSIndicates when the 489 is inservice, if setpoint access isallowed, any communicationport activity, if alternate setpointsare in use, if any latched alarm ortrip may be reset, and if Nextkey should be pressed to displaydiagnostic messages.

OPERATOR KEYSOnce the 489 is programmed,normal operation requires onlytwo keys. The Reset key is used toreset latched trips or alarms. TheNext key is used to scroll throughdiagnostic messages in the eventof an alarm or trip.

RTD INPUTSTwelve RTD inputs are individually field programmable to measure platinum, nickel, or copper type RTDs.

OUTPUT RELAYSSix, trip duty, form C output relaysmay be assigned to trip, alarmand control functions.

VT INPUTSFour VT inputs provide wye or opendelta system voltage sensing as well as neutral voltage sensing.

RS485 COMMUNICATIONSTwo independent RS485communication ports may beaccessed simultaneously usingModbus® RTU and DNP 3.0 protocolat baud rates up to 19200 bps.

489 Generator Management Relay™

A = 0 C = 0B = 0 AMPS



3

Features



3

Typical Wiring

OUTPUT CT's

PHASE A

PHASE B

PHASE C

EXCITERAND

AUTOMATICVOLTAGE

REGULATOR

FIELD

DCAmps

mA

OPTIONALTRANSDUCER

TO 4-20 mA INPUT FOROVEREXCITATION

PHASE a

PHASE b

PHASE c

GENERATOR

C(B)

B(C)

A

WYE VOLTAGETRANSFORMERCONNECTION

UNITCIRCUIT

BREAKER

OPEN DELTA VOLTAGETRANSFORMERCONNECTION

UNITCIRCUIT

BREAKER

LOADLOAD

INDUCTIVE/HALLEFFECT SENSORFOR TACHOMETER

+ 24

KEYSWITCHFOR SETPOINTACCESS

UNITBREAKER STATUS

(52a)DCS

GROUND COMMUNICATION PORTS ONLY AT MASTER DEVICE

RS485PORT

COMMON COMMON

4 –20mAANALOG

INPUTPLCor

COMPUTER

WATTS

VARS

STATOR RTDs

BEARING RTDs

#1+

#2+

#3+

#4+

SELF POWEREDBEARING VIBRATION

TRANSDUCERS

489PC

PERSONALCOMPUTER RS232

9 W

IRE

RS

232

ALARM ANNUNCIATOR

OUTPUT CONTACTSSHOWN WITH NOCONTROL POWER

SELF TEST ANNUNCIATOR

UNITSHUTDOWN

CIRCUIT

UNITTRIPCOIL52a

UNIT BREAKERTRIP CONTROL

GROUNDBUS

CONTROLPOWER

489POWERSUPPLY

F10 G9 H9 G10 H10 G3 H3 G4 H4 G5 H5 G6

H12

H11

G12

G11

E12

F12

E11F11

E2F1E1F2E3F3E5F4E4F5E6F6E8F7E7F8E9F9

H6 G7 H7 G8 H8 G2 H1 H2 G1

A27A26A25A24A23A22A21A20A19A18A17A16B4B3B2D27D26D25

C4C3C2C1

D24D23D22D21D20D19D18D17D16

D4D5D6D7D8D9

D10D11D12D13D14D15

A14A15D1D2D3

A9A10A11A12A13

A4A5A6A7A8

B1A1A2A3

cbaNEUTRAL END CT's

HG

F

E10

AUTOMATICCT SHORTINGTERMINALS

GROUND INPUTS

VNEUTRAL

1A

1A / 5A

1A / 5A

1A / 5A

1A / 5A

CO

M

CO

M

CO

M

CO

M

CO

M

1A / 5A

CO

M

1A / 5A

CO

M

Va Vb

Vc

Vco

m

CO

MRTD RETURN

RTD RETURN

RTD RETURN

COMPENSATION

COMPENSATION

COMPENSATION

COMPENSATION

COMPENSATION

HOT

HOTHOT

HOTHOT

COMPENSATION

COMPENSATION

HOTHOT

RTD RETURN

RTD RETURN

COMPENSATION

COMPENSATION

HOTHOT

COMPENSATION

COMPENSATION

HOT

RTD RETURNCOMPENSATIONHOT

HOT

RTD SHIELD

RTD #1

RTD #2

RTD #3

RTD #4

RTD #5

RTD #6

RTD #7

RTD #8

RTD #9

RTD #10

RTD #11

RTD #12

ASSIGNABLE INPUT 1ASSIGNABLE INPUT 2ASSIGNABLE INPUT 3ASSIGNABLE INPUT 4ASSIGNABLE INPUT 5ASSIGNABLE INPUT 6ASSIGNABLE INPUT 7COMMONSWITCH + 24Vdc

ACCESS

BREAKER STATUS

DIG

ITAL IN

PUTS

COMPUTERRS485

AUXILIARYRS485

COM COM COMCOM

ANALOG OUTPUTS ANALOG INPUTS

ANALOG I/O

1 2 3 4 1 2 3 424

Vdc

SHIELD

FRONT PANEL LOCALPROGRAMMING PORT R

S23

2

R1 TRIP

R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE

TRIP COILSUPERVISION

CONTROL POWER

SAFETY GROUND

FILTER GROUND

PHASEVOLTAGE INPUTS

PHASE A PHASE B PHASE CPHASE PHASE PHASE

G2 H1 H2 G1

Va Vb

Vc

Vco

m

PHASEVOLTAGE INPUTS

IRIG-B

CHECK VOLTAGE RATINGOF THE UNIT

BEFORE APPLYING POWER.(SEE Pgs.2-8)

CAUTION

DO NOT INJECTVOLTAGES TO

DIGITAL INPUTS(DRY CONTACT

CONNECTIONS ONLY)

CAUTION

120Ω

1nF

120Ω

1nF

120Ω

1nF

120Ω 1nF

808752EH.dwg

RS232 INTERFACE

RELAY COMPUTER

9 PINCONNECTOR

25 PINCONNECTOR

TXDTXDRXDRXD

SGND SGND

1234567

20

2289

12

233

4

4

5

5

6 67

7

8

8

9

489 SR GeneratorManagement Relay

GE Multilin

DO NOT INJECT OVER RATED CURRENTON G10 & H10.(See pg. 2 - 10)

CAUTION



3

PROTECTIONGROUND CURRENT INPUTSCT ratio: 10000:1 for 1 A/5 A secondary,

50:0.025 for HGFCT secondary: 1 A/5 A, 2.5 mA for HGFBurden: Less than 0.2 VA at rated load for 1 A/5 A

Less than 0.02 VA at rated load for HGFConversion range: 0.02 – 20 x CT for 1 A/5 A

0.0 – 100 A primary for HGFAccuracy: at <2 x CT: ±0.5% of 2 x CT for 1 A/5 A

at ≥2 x CT: ±1% of 20 x CT for 1 A/5 AHGF: at <10 A: ± 0.1 A/5 A

at ≥10 – 100 A: ±1.0 A150 mA continuous

CT withstand: 1 sec @ 80 times rated current for 1 A/5 A2 sec @ 40 times rated current for 1 A/5 Acontinuous @ 3 times rated current for 1 A/5 A

METERINGPHASE AND DIFFERENTIAL CURRENT INPUTSCT primary: 10 – 50000 ACT secondary: 1 A or 5 A (must be specified with order)Burden: <0.2 VA at rated loadConversion range: 0.02 – 20 x CTAccuracy: at <2 x CT: ±0.5% of 2 x CT

at ≥2 x CT: ±1% of 20 x CTCT withstand: 1 sec @ 80 times rated current

2 sec @ 40 times rated currentcontinuous @ 3 times rated current

489 Technical SpecificationsTERMINALS

Low voltage (A, B, C, D terminals):12 AWG max

High voltage (E, F, G, H terminals):#8 ring lug, 10 AWG wire standard

INPUTSPHASE VOLTAGE INPUTSVT ratio: 1.00 – 240.00:1 in steps of 0.01VT secondary: 200 VAC (full scale) Conversion range: 0.02 – 1.00 x full scaleAccuracy: ±0.5% of full scaleMax continuous: 280 VACNEUTRAL VOLTAGE INPUTVT ratio: 1.00 – 240.00:1 in steps of 0.01VT secondary: 100 VAC (full scale) Conversion range: 0.005 – 1.00 x full scaleAccuracy: ±0.5% of full scaleMax continuous: 280 VACDIGITAL INPUTSInputs: 9 opto-isolated inputsExternal switch: dry contact <800 Ω or

open collector NPN transistor from sensor6 mA sinking from internal 4 K pullup @ 24 VDC with Vce <4 VDC

489 sensor supply: +24 VDC @ 20 mA max RTD INPUTSRTDs: 3 wire type 100 Ω Platinum (DIN.43760)

100 Ω Nickel field120 Ω Nickel programmable10 Ω Copper

RTD sensing current: 5 mAIsolation: 36 Vpk (isolated with analog inputs and

outputs)Range: -50 to +250° CAccuracy: ±2° C for Pt and Ni, ±5° C for CuLead resistance: 25 Ω Max per leadNo sensor: >1000 ΩShort/low alarm: <-50° C ANALOG CURRENT INPUTSCurrent inputs: 0 – 1 mA, 0 – 20 mA or 4 – 20 mA (setpoint)Input impedance: 226 Ω ± 10%Conversion range: 0 – 21 mAAccuracy: ±1% of full scaleType: passiveAnalog input supply: +24 VDC @ 100 mA max

POWER SUPPLYCONTROL POWEROptions: LO/HI (must be specified when ordering)Range:

LO: DC: 20 – 60 VDCAC: 20 – 48 VAC @ 48 – 62 Hz

HI: DC: 90 – 300 VDCAC: 70 – 265 VAC @ 48 – 62 Hz

Power: 45 VA (max), 25 VA typicalVoltage loss-ride through time:

30 ms

*Specifications subject to change without notice.

MONITORINGTRIP COIL SUPERVISIONApplicable voltage: 20 – 300 VDC/VACTrickle current: 2 – 5 mA

COMMUNICATIONSCOMMUNICATIONS PORTSRS232 port: 1, front panel, non-isolatedRS485 ports: 2, isolated together @ 36 VpkBaud rates: RS485: 300, 1200, 2400, 4800, 9600, 19200 bps

RS232: 9600 bpsParity: None, odd, evenProtocol: ModBus® RTU/half duplex, DNP 3.0

OUTPUTSANALOG CURRENT OUTPUTType: ActiveRange: 4 – 20 mA, 0 – 1 mA (must be specified

with order)Accuracy: ±1% of full scale4 – 20 mA maximum load:

1200 Ω0 – 1 mA maximum load: 10 kΩIsolation: 36 Vpk (isolated with RTDs and analog

inputs)4 assignable outputs: phase A, B, C output current, 3-phase

average current, negative sequence,generator load, hottest stator RTD,hottest bearing RTD, hottest other RTD,RTD # 1-12, phase AB voltage, phaseBC voltage, phase CA voltage, 3average phase-phase voltage, V/Hz,frequency, 3rd harmonic neutralvoltage, Power factor, 3-phase realpower (kW), 3-phase apparent power(kVA), 3-phase reactive power (kvar),analog inputs 1 – 4, current demand, kvardemand, kW demand, kVA demand,thermal capacity used, tachometer

OUTPUT RELAYSConfiguration: 6 electromechanical Form CContact material: silver alloyOperate time: 10 ms

Max ratings for 100000 operations

VOLTAGE MAKE/CARRY MAKE/CARRY BREAK MAXCONTINUOUS 0.2 sec LOAD

DC Resistive 30 VDC 10 A 30 A 10 A 300 W125 VDC 10 A 30 A 0.5 A 62.5 W250 VDC 10 A 30 A 0.3 A 75 W

DC Inductive 30 VDC 10 A 30 A 5 A 150 W125 VDC 10 A 30 A 0.25 A 31.3 W

(L/R = 40 ms) 250 VDC 10 A 30 A 0.15 A 37.5 WAC Resistive 120 VAC 10 A 30 A 10 A 2770 VA

250 VAC 10 A 30 A 10 A 2770 VAAC Inductive 120 VAC 10 A 30 A 4 A 480 VAPF=0.4 250 VAC 10 A 30 A 3 A 750 VA

PRODUCTION TESTS

Thermal cycling: Operational test at ambient, reducing to-40° C and then increasing to 60° C

Dielectric strength: 2.0 kV for 1 min from relays, CTs, VTs,power supply to safety ground DO NOT CONNECT FILTER GROUND TOSAFETY GROUND DURING TEST

ENVIRONMENTAL

Ambient operating temperature: -40° C to +60° CAmbient storage temperature: -40° C to +80° CHumidity: Up to 90%, noncondensingAltitude: Up to 2000 mPollution degree: 2NOTE: It is recommended that the 489 be powered up at least

once per year to prevent deterioration of electrolyticcapacitors in the power supply.

LCD contrast impaired below -20°C

TYPE TESTS

Dielectric strength: Per IEC 255-5 and ANSI/IEEE C37.902.0 kV for 1 min from relays, CTs, VTs,power supply to safety ground DO NOT CONNECT FILTER GROUND TOSAFETY GROUND DURING TEST

Insulation resistance: IEC255-5 500 VDC, from relays, CTs, VTs,power supply to safety ground DO NOT CONNECT FILTER GROUND TOSAFETY GROUND DURING TEST

Transients: ANSI C37.90.1 oscillatory (2.5 kV/1 MHz)ANSI C37.90.1 fast rise (5k V/10 ns)Ontario Hydro A-28M-82IEC255-4 impulse/high frequency disturbanceClass III level

Impulse test: IEC 255-5 0.5 J 5 kVRFI: 50 MHz/15 W transmitterEMI: C37.90.2 electromagnetic interference

@ 150 MHz and 450 MHz, 10 V/mStatic: IEC 801-2 static dischargeEnvironment: IEC 68-2-38 temperature/humidity cycleVibration: Sinusoidal vibration 8.0 g for 72 hrs

PACKAGING

Shipping box: 12" W x 11" H x 10" D(30.5 cm x 27.9 cm x 25.4 cm)

Shipping weight: 17 lbs max (7.7 kg)

CASE

Fully drawout (automatic CT shorts)Seal provisionDust tight doorPanel or 19" rack mountIP class: IP20-X

APPROVALS

ISO: Manufactured under an ISO9001 registered system.UL: UL approvedCSA: CSA approved

: Conforms to EN 55011/CISPR 11, EN 50082-2, Conforms to IEC 947-1, 1010-1



3

489 * * *489 Base unit generator management relay

P1 Current transformer inputs: 1 A CT secondaries

P5 Current transformer inputs: 5 A CT secondaries

LO Control power: DC: 20 – 60 V; AC: 20 – 48 V @ 48 – 62 Hz

HI Control power: DC: 90 – 300 V; AC: 70 – 265 V @ 48 – 62 Hz

A1 0 – 1 mA analog outputs

A20 4 – 20 mA analog outputs

Accessories

489PC Software: Shipped free with 489DEMO: Metal carry case in which 489 unit may be mounted19-1 PANEL: Single cutout for 19" panel19-2 PANEL: Double cutout for 19" panelSCI MODULE: RS232 to RS485 converter box, designed for harsh industrial

environmentsPhase CT: 50, 75, 100, 150, 200, 250, 300, 350, 400, 500, 600, 750, 1000HGF3, HGF5, HGF8: For sensitive ground detection on high resistance grounded

systems1 3/8" Collar: For shallow switchgear, reduces the depth of the relay by 1 3/8"3" Collar: For shallow switchgear, reduces the depth of the relay by 3"IP54 Collar

Dual mounting available with the 19-2 panel

NOTE: For dimensions see SR Family brochure.

Ordering

808785E3.cdr

7 8 9

4 5 6

1 2 3

. 0

7 8 9

4 5 6

1 2 3

. 0

Software

The 489PC software is a robust,Windows®-based application.Information can be accessedlocally through the keypad anddisplay, or via PC. The 489PCsoftware can display actualvalues over time in a graphicalformat, which may be useful introubleshooting situations.

489 setpoint files may be saved to a disk,printed, and downloaded to the 489.

The intuitive click and point softwaresimplifies setpoint programmingand relay interrogation. Setpoint

files for each generator may bestored, printed for verification, anddownloaded to the 489 for error freesetpoint entry.

The entire 489 manual is conve-niently included in the 489PCprogram’s help file, allowing theuser to easily access informationwhile programming the relay. Thedocumentation and illustrationscan be printed or pasted intoother Windows® applications.

URPC Program

The 489 is supported by theWindows®-based URPC program,allowing the use of advancedfunctions including creatingsingle-line diagrams, annunciatorpanel viewing, metering andsimple programming changes.Additionally, the user can accessmultiple 489s or other devices formetering in real time.

Product Upgrades

Flash memory technology allowsproduct upgrades without unitremoval. Firmware upgrades maybe downloaded to the unit via theRS232 ports.

489 GuideformSpecificationsFor an electronic version of the 489guideform specifications, pleasevisit: www.GEindustrial.com/Multilin/specs, fax your request to 905-201-2098 or email to [email protected].

489 Generator Management Relay™


R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE



MESSAGE

VT FAILURE

BREAKER FAILURE


4 5 6

1 2 3

. 0 HELP

MESSAGE

VALUE

ACTUAL

ESCAPE

ENTER

RESET

NEXT

RESET

POSSIBLE

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS


NEG. SEQUENCE

GROUND

LOSS OF FIELD

A = 0 C = 0

B = 0 AMPS

808765E4.cdr

489 SETTINGS

send to 489

saveondisk

print

489 Windows Application-489

ForHelp,pressF1

Actual-ChartRecorder


R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE



MESSAGE

VT FAILURE

BREAKER FAILURE

PROGRAM PORT SETPOINT 7 8 9

4 5 6

1 2 3

. 0 HELP

MESSAGE

VALUE

ACTUAL

ESCAPE

ENTER

RESET

NEXT

RESET

POSSIBLE

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS


NEG. SEQUENCE

GROUND

LOSS OF FIELD

A = 0 C = 0

B = 0 AMPS

www.GEindustrial.com/Multilin

Order online –Order online –save timesave time

www.enerVista.comenerVista enabledenerVista enabled See page 275.

™Generator Management Relay is a trademark of GE Multilin.

41

3

Digital Generator Protection


High dependability and security

Extensive self-diagnostic routines

Redundant power supply

Adaptive sampling frequency for betterprotection during startup

Extensive recording capabilities (last 100 events, three fault reports)

Oscillography (120 cycles)

Compact to reduce space requirements

Modular construction for easymaintenance

Applications

Any size AC generators driven by steam,gas and hydraulic turbine


Stator differential

100% stator ground faults

Current unbalance


Negative sequence current

Third harmonic voltages

User Interfaces

16 character LED display, 20 buttonkeypad

Two RS232 ports

Protection, control, monitoring and recording

functions for AC generators in a single compact package.

GE Multilin

Protection andControlThe DGP is a Digital GeneratorProtection system for any size ofAC generator driven by steam,gas or hydraulic turbine. A highdegree of security is provided viaextensive self-diagnostics and anoptional redundant power supply.Protection features include:

Current Unbalance

The DGP protects the generatorfrom heating caused by currentunbalance, using a formula basedon the negative sequence compo-nent of the stator current. A linearreset allows the machine to cooldown, and an alarm function isoperated by the negative sequencecomponent.

Stator Differential

High-speed protection during inter-nal phase-to-phase faults andthree-phase faults is provided. Thisfunction can provide high-speedphase-to-ground protection provid-ed the neutral of the machine isgrounded or another machineoperating in parallel is grounded.

Anti-Motoring

The DGP includes a one or two-step anti-motoring reverse powerfunction with individual time delayadjustments. One step can beused for sequential tripping of thegenerator, in which the turbine istripped first. This step is enabledwhen closing of turbine inletvalves is indicated by digital input.The trip sequence is then contin-ued when its delay time elapses.The second step is intended toprovide backup to the sequentialtrip. If the sequential trip is notenabled, the two devices can beused as two-step reverse powerfunctions with independent timers.

Ground Overcurrent

This inverse overcurrent functioncan be used to detect stator groundfaults in a high or low resistancegrounded generator system.

Time Overcurrent with Voltage

Restraint

Protection against prolongedgenerator contribution to a fault onthe system is provided through atime-overcurrent function withvoltage restraint, as part of thesystem backup protection. Thisfunction is controlled by a faultdetector and a Voltage TransformerFuse Failure (VTFF) condition.

Stator Ground

Two overlapping zones providestator ground fault detection in ahigh impedance grounded gener-ator system.

Zone 1 uses a fundamentalfrequency neutral overvoltage tocover about 95% of the statorwinding, based on the pickupvoltage setting.

Zone 2 is based on comparing thethird harmonic voltage at thegenerator neutral with the totalthird harmonic voltage generated.This function is designed to cover15% of the neutral end of thestator windings, and is controlledby fundamental and thirdharmonic voltage thresholds.Together the two zones cover100% of the stator windings.

Alternatively, Zone 1 can be usedas a generator-bus ground detector in a high-impedancegrounded or ungrounded system.

The DGP uses two overlapping zones todetect stator ground faults.

Loss of Excitation

When a synchronous generatorloses excitation, it acts as aninduction generator: runningabove normal speed, operating at

DGP Digital Generator Protection


3

Functional BlockDiagram

704750A8.CDR

To MODEM

To LAPTOPPC

TRIP

ALARM

52G

GSU Transf.

TOPOWERSYSTEM

GEN.

51GN

64G1

64G2

27TN

RS

23

2

46

87G

40

32

51V

VTFF

RS

23

2

64G2

24

32 40

27 59

81

VTFF

DGP

51V

87S Generator differential46 Current unbalance40 Loss of excitation32 Anti-motoring51V TOC with voltage restraint64G 100% stator ground51GNP Stator ground overcurrent27TN 3rd harmonic neutral undervoltage24 Overexcitation59 Overvoltage27P Undervoltage81 Over and underfrequency50/27 Accidental energizationVTFF Voltage transformer fuse failure

DEVICE PROTECTION

95%

15%

704757A3.CDR

Neutral end

Terminal end

Zone 1

(64G1)

Zone 2

(64G2)

reduced power, and receiving itsexcitation (vars) from the system.The DGP’s loss of excitation func-tion includes two mho character-istics featuring individuallyadjustable reach, offset, and timedelay. The DGP will block thisfunction if it detects a negativesequence voltage, which wouldindicate a VTFF, or an externalVTFF signal.

The first zone mho function can beset to detect severe cases of excita-tion failure with a short time delay.The second zone mho function canbe set to detect all the excitationfailure cases with a longer timedelay setting. This permits systemsecurity during stable powersystem swing conditions.

Overexcitation Protection

Provided through a Volts/Hertzfunction with inverse and instanta-neous time delay characteristics.The overexcitation protectionincludes trip and alarm functionscomputed for each of the three-phase voltages. The trip functionincorporates a user-configurablelinear reset characteristic to mimicmachine cooling.

Over and Undervoltage

The undervoltage functionconsists of a positive sequenceundervoltage with a user-selectable inverse or definite timecharacteristic. The overvoltagefunction consists of a positivesequence overvoltage with aninverse characteristic. A linearreset characteristic is incor-porated for both functions. Theovervoltage function can be usedas a backup to the overexcitation.The undervoltage function alsoprovides voltage phase reversalprotection.

Over and Underfrequency

Up to four steps of protection areincluded, each with an adjustabletime delay. The steps arecontrolled by an adjustable posi-tive sequence voltage level.

Voltage Transformer Fuse Failure

(VTFF)

When a fuse failure is detected,the DGP will block tripping by theloss of excitation and TOC withvoltage restraint functions, asthey may continue operating witha loss of AC.

Accidental Energization

The DGP system uses internallogic to detect accidental ener-gization of the generator.

Configurable I/Os

Two general purpose contactconverter inputs allow easyconnection of external trip oralarm contacts, permitting use ofthe event log and configurableoutputs of the DGP. An optionalinput can be configured to disableall protections functions.

Eight configurable output relays,four trip and four alarm, allow theuser to select any desired combi-nation of the functions. Outputrelays can be controlled remotelyor locally through a securedauthorization or hardwire jumper.

The control functions of the DGP can operateoutput relays locally or remotely.

Configurable Logic

The DGP allows strategic modifi-cation of internal logic to favoreither security or dependability.This can be accomplished eitherby software settings or automati-cally by a "Generator Offline"contact input. This feature allowsdisabling of selected functionswhen the generator is offline andmodification of the AccidentalEnergization logic.

Contact Expansion Unit

The DEC 1000 unit is an intelligentcontact expansion unit thatprovides an additional 11 outputrelays, five with contacts in ‘C’

configuration, and six with nor-mally open contacts. Eleven LEDsindicate operation of contacts, anda reset button tests and resets theunit. Available for “CA“ model only.

The DEC 1000 expands the number ofoutputs controlled by the DGP.

Monitoring andMeteringThe DGP features advancedmetering and event recordingfunctions which include:

Self-Tests and Diagnostics

Self-test routines are performedduring power-up and continue torun in the background duringservice. Failures are categorizedas either a critical or non-criticalalarm. Appropriate protectivefunctions are automaticallydisabled during a critical alarm,helping to maintain the high secu-rity of the DGP.

The DGP also has a RELAY TESTmenu which facilitates installationby allowing testing of individualprotective functions and outputrelays for the protection system.

Trip Circuit Monitor

This function consists of the TripVoltage Monitor (TVM) and theTrip Current Monitor (TCM) for upto four trip output contacts. TheTVM detects any discontinuity inthe external trip circuit andproduces a non-critical alarm.The TCM confirms energizing ofthe trip circuit when a trip isissued by the DGP. To protect theoutput contacts the TCM may beused to seal-in the trip output aslong as trip current is flowing.

Metering

The DGP provides the followingmetering values:

Currents (Ia, Ib, Ic) Voltages (Va, Vb, Vc, or Vab, Vbc, Vca)



3

Angles of I and V Negative sequence current (%I2) Third harmonic voltages

(phase/neutral) Watts (three-phase) Vars (three-phase) Frequency Contact inputs (status)

The currents, voltages, watts, andvars can be metered as eitherprimary or secondary values toan accuracy of 3%.

Event Recording

The last 100 events are time taggedin milliseconds and stored in theDGP's memory. Event data is avail-able via the RS232 ports and theoptional printer port for analysis.

The DGP stores the last 100 events.

Fault Reports

The DGP stores the last threefault reports in its memory. Afault report is generated by anyprotective function trip or by anexternally triggered input.

Oscillography

The DGP can capture and store120 cycles of oscillography datawhich can be divided into one,two, or three partitions. Up to 20prefault cycles can be captured.In addition to 12 analog wave-forms (currents and voltages) theDGP captures internal logic flagsand contact I/O status. The DGPsettings at time of capture arealso stored as part of the data,along with the fault report.

User InterfacesThe 489 allows users ease ofaccess through:

Keypad and Display

A 20 button keypad and a 16character LED display allow theuser easy access to settings anddata. Two distinct security pass-words limit tampering.

A keypad and display are provided for localuser interface.

LED Indicators

Over eighteen LEDs on the frontpanel provide easy and immedi-ate indication of the phase andfault type. A two-color LED (redand green) is also provided toindicate the relay status.

Communications

Two RS232 serial ports are provid-ed on the DGP, one on the frontand one on the rear. The port onthe front allows easy local userinterface via a laptop computer.The rear port can be used to inter-face with a remote computer viamodem. There are three levels ofsecurity password provided forremote communications. Foradded security, hardwire jumperscan disable setting changes andcontrol actions from a computer.

For remote link communications,DGP offers a choice of **GE-MODEM or *ModBus® protocol,each supplied with a copy of GE-LINK remote communicationsoftware. In addition to the GE-LINK, a copy of the DGP-DATAsoftware is also supplied with therelay for oscillography dataanalysis of DGP data. * ModBus® available with “CA” model

only. Requires an optional RS485 toRS232 converter.

** New Windows® version of GE-LINKfor ModBus® protocol.

Time Synchronization

An IRIG-B input is provided for timesynchronization via satellite signal.

Drawout Construction

The drawout construction of theDGP case allows for all internalcomponents to be withdrawnfrom the front of the relay.



3

File

Quit

Graphs Reports Setup eXit F1=Help

TEST_LOF.OSC:

LEFT RIGHTSAMPLE: 136 231 ELAPSED TIME: 132.7 MS (59.68 HZ)

VALUE: IAS +004.79IBS -010.05ICS +005.50VA -0035.9VB +0020.7VC +0016.4

-000.96 -001.41 +002.19-0048.8 +0035.2 +0014.1

DIFF: +005.75+008.64+003.31+0012.9+0014.5+0002.3

SEC AMPS

SEC VOLTS

20.0 AMPS

IAS

-20.0 AMPS

IBS

ICS

100.0 VOLTS

VA

-100.0 VOLTS

VB

VC

704755A1.CDR

704756A1.CDR

94G TRIP CIRCUIT OPEN ALARM OFF94G TRIP CIRCUIT OPEN ALARM ON94G2 TRIP SIGNAL RESET32-1 OFF32-2 OFF32-1 ONTURBINE INLET VALVE CLOSEDGENERATOR OFF-LINE94G2 TRIP SIGNAL ON32-2 ONGENERATOR ON-LINETURBINE INLET VALVE OPEN94G3 TRIP SIGNAL RESET64G1 OFFTURBINE INLET VALVE CLOSEDGENERATOR OFF-LINE94G3 TRIP SIGNAL ON64G1 ONGENERATOR ON-LINETURBINE INLET VALVE OPENREMOTE - SETTINGS CHANGE DONEREMOTE - SETTINGS CHANGE STARTED

GEN Simulator DGP

Station ID:MALVERN

Generator ID:MODEL GENERATOR

10/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/29/9310/28/9010/28/93

14:40:42.27614:39:54.97114:33:35.66114:33:35.66014:33:35.63914:33:34.39614:33:31.99714:33:28.42314:33:26.45214:33:26.45114:27:09.87814:27:04.96814:26:54.26314:26:54.26214:26:50.91114:26:47.58414:26:42.60414:26:42.60314:25:44.44414:25:38.20216:32:31.64216:32:30.882

Events

The DGP can store 120 cycles of oscillography.



3

MAN MACHINE INTERFACE MODULE (MMI) 16 character alpha-numeric LED display for fault report,

metering values, alarm messages, setting parameters etc. Keypad includes 20 buttons for user-friendly

local interface with the DGP Dual color LED indicates relay status RS232 port facilitates connection of lap-top PC

MODULESSystem Procesor (SSP),Analog Interface (ANI),Data Acquisition (DAP), &Digital Signal Processor(DSP) modules are plug-intype for ease of maintenanceand trouble-shooting.DIGITAL INPUT & TARGET

MODULE (DIT) LED targetsindicate ALL the functionsthat operated during atrip event.

POWER SUPPLY MODULES are located behind the cover plate. Module PS2 is optional.

OUTPUT RELAY CONTACTS 8 configurable relays 8 predefined relays

CONTROL POWERDC control power input

CT INPUTS 6 phase CT inputs 1 residual CT input 1 residual/neutral CT input

VT INPUTS: 3 phase VT inputs,

wye or delta 1 neutral VT input

RS232 PLUG (PL-1) provides connection to modem for remote communications or an interface to stationintegration system.

OPTIONAL SERIAL PORT (PL-2)Can be used to connect aprinter for automatic/manualprintout of data or a ContactExpansion Unit DEC1000.

OPTIONAL PLUG (PL-3) Available for IRIG-B signal input to synchronize the DGP internal clock to a common reference clock e.g. GPS receiver.

704752A8.CDR

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9 10 11 12 13 14

DIGITAL INPUTS: 3 configurable contact

inputs 3 predefined contact

inputsAE

AF

AG

AH

BE

BF

BG

BH

SSP301 ANI301 DAP201 DSP401

SSP301MMI301

MGM781

DIT101

DIT101 MMI301

ANI301

PL-2PL-1 PL-3

DAP201 DSP401

MMI301

MGM781 TPM2

1

2

15

16

17

1

2

15

16

17

11

12

13

14

27

28

11

12

13

14

27

28

INVNFREQ

5 AMP100/140 VOLTS50/60 Hz

RATINGSINVNFREQ

5 AMP100/140 VOLTS50/60 Hz

RATINGS

PS2

VTFF

PS1

PS2PS1

TPM1

46

59

32

81-U 81-O

64G1 64G2

40G1 40G2

24A 24B 24C

51V-A 51V-B 51V-C

57A 57B 57C

MAGNETIC MODULES (MGM) Two identical modules contain CT’s, VT’s, output relays, etc. and areinterchangeable.

OPTIONAL TEST BLOCKSfacilitate injection of analog input signals and monitoring of DGP outputs for test purpose without disturbing field wiring.

Features

Front View

Rear View



3

Typical Wiring

GROUNDBUS

A

B

C

AH1

BG8

TRIP A (DRY)

TRIP B (DRY)

TRIP C (DRY)

TRIP D (DRY)

ALARM A

ALARM B

ALARM C

ALARM D

VT FUSE FAIL

TEST PICKUP

TEST TRIP

SPARE

SELF TESTNON CRITICAL

SELF-TESTCRITICAL

POWERSUPPLY

ALARM 1

POWERSUPPLYALARM 2

94G

94G1

94G2

94G3

74A

74B

74C

74D

74FF

DOR 12

DOR 13

DOR 9

74 NC

74 CR

TRIP A

TRIP B

TRIP C

TRIP D

704753A8.CDR

GENERATOROFF LINE

TURBINEINLET VALVE

LIMIT SWITCH

EXTERNALTRIP 1

INP

UT

S

OU

TP

UT

S

EXTERNALTRIP 2

OSCILLOGRAPHTRIGGER

EXT. VTFF/DISABLE PROT.

BG7

BG6

BG5

BG4

BG3

BG2

BE4

BE2

BG1

BE3

BE1

AH12

AG1 CONTROL

POWERAG2

BH14

BH1

BH9

AH2

AH11

BH2

BH10

AH3

BH3

BH11

AH4

BH4

BH12

AH5

BH5

AH9

AH6

BH6

AH10

AH7

BH7

AH8

BH8

IARGNDVOLT

IAS VAIBR IBS VBICR ICS VC

VOLTAGE

INPUTS

CURRENT

INR INS

AC(B)

B(C)

DB25

DB9

DB25

RS-232

DEC1000

or

ContactExpansion

Unit

IRIG-B

RS-232

PRINTER

(REAR)PL1

(FRONT)

(REAR)PL2

(REAR)PL3

BF5

AE7

BE5

BE6

BF6

BE10

BE9

BE8

BE14

BE13

BF10

BF9

BF14

BF13

BE7

AG13

AG12

AG11

AG10

AG6

AG5

AG9

AG8

AG7

BE12

AE13

AE12

AE10

AE6

AE5

AE9

AE8

BF8

BF7

AF14

AF13

AF11

AF10

AF6

AF5

AF9

AF8

AF7

BF12

BF11

AG14

BE11

AE14

AF12

AE11

(-)

(+)

(-)

(+)

(-)

(+)

(-)

(+)

PRINTER

DGPDigital Generator Protection

GE Multilin



3

Dimensions

704751A3 DWG

CUTOUT

8 REQ'D.0.28" Dia.

(7)

*3.375"(86)

17.25"(438) 18.38"

(467)

13.94"(354)

4.00"(102)

4.00"(102)

2.94"(75)

1.50"(38)

1.0"(25)

13.03"(331)

0.31"(8)

13.88"(352)

* minimum to remove cable when req'd.

PLUG

TERMINALBLOCKS

19.00"(483)

SIDE VIEW PANEL CUTOUTFRONT VIEW

LATCH

Inches(mm)

DEC1000 Mounting

FRONT VIEW SIDE VIEW

CUTOUT & DRILLING PATTERN

19.00"(483)

3.40"(87)

8.1"(206) 1.20"

(30.4)

0.28" Dia.(7) 4 Pl.

18.32"(465)

17.35"(441)

3.54"(90)

3.00"(76)

0.26"(7)

INCHES(mm)

704759A2.dwg

CUTOUT

APPROVALSUL file no. E57838

PACKAGINGNet weight: 51 lbs (23 kg)Dimensions:

Height: 14" (352 mm) 8 rack unitsWidth: 19" (484 mm) standard 19" rackDepth: 14" (356 mm)

TYPE TESTSInsulation test voltage: 2kV 50/60 Hz, one min

2.8k VDC, one minImpulse voltage withstand: 5 kV peak, 1.2/50 µsec, 0.5 JInterference test withstand: SWC, per ANSI C37.90.1 &

IEC 255-5Vibration test withstand: IEC255-21-1

ENVIRONMENTALAmbient temperature range:

Storage: -30° C to +70° COperation: -20° C to +55° C

Humidity: 95% without condensation

OUTPUTSCONTACT DATATrip outputs (4 programmable relays, 2 contacts each)Trip contacts: Continuous rating = 3 A

Make and carry 30 A per ANSI C37.90Interrupting = 60 VA inductive,maximum 250 V or 0.5 A

Alarm outputs(4 programmable & 5 predefined relays, 1 contact each)Alarm contacts: Continuous rating = 3 A

Make and carry 5 A for 30 secInterrupting = 60 VA inductive,maximum 250 V or 0.5 A

Trip current monitor sensitivity:150 mA

Trip voltage monitor: 38 – 300 VDCDigital inputs: 38 – 300 VDC, 1 – 3 mA

COMMUNICATIONSINTERFACE DATASystem interface: DB25, RS232 port – rear panel

DB9, RS232 port – front panelIRIG-B port – rear panel (optional)Printer port – rear panel (optional)

INPUTSBURDENSCurrent circuits: 0.022 Ω, 5° for In = 5 A

0.12 Ω, 30° for In = 1 A@ 60 Hz 0.0507 < 4.738

Voltage circuits: 0.30 VA, 60 Hz0.40 VA, 50 Hz

DC battery:Power supply: 19 W with 1 supply

25 W with 2 suppliesFor contact converters: 2.5 mA at rated voltage

POWER SUPPLYDC control voltage:

48 VDC 38.5 – 60 VDC110/125 VDC 88 – 150 VDC220/250 VDC 176 – 300 VDC

METERINGRATINGSNominal frequency: 50 or 60 HzFrequency tracking: 30 – 80 HzNominal voltage (phase-phase): 100 – 210 VACRated current: In = 1 or 5 AMaximum permissible current:

Continuous 2 x InThree sec 50 x InOne sec 100 x In

Maximum permissible AC voltage:Continuous 280 VACOne min (once per hour) 490 VAC

ACCURACYRMS measurements: ± 3%Phase angle measurements: ± 1°Frequency measurements: ± 0.01 HzTimers: ± 3% of settingData time tag resolution: ± 1 ms

PROTECTIONIn = 1 A In = 5 A

General differential (87G):Differential current pickup: 0.04 – 0.2 A 0.2 – 1.0 A% slope factor: 1 – 10 1 – 10

Current unbalance (46A, 46T):Neg. seq. current pickup: 0.01 – 0.60 A 0.5 – 2.99 AMachine constant (46T): 1 – 45 1 – 45Alarm time delay (46A): 1 – 9 sec 1 – 9 sec

Loss of field (40):Zone 1 and Zone 2 center: 12.5 – 300 Ω 2.5 – 60 ΩZone 1 and Zone 2 radius: 12.5 –300 Ω 2.5 – 60 ΩZone 1 and Zone 2 timer: 0.01 – 9.99 sec 0.01 – 9.99 sec

Anti-motoring (32-1 & optional 32-2):Reverse power: 0.1 – 20.0 W 0.5 – 99.9 WTime delay: 1 – 120 sec

Stator ground (64G1 & optional 64G2):Neutral OV pickup: 4 – 40 VTime delay (for 64G1): 0.1 – 9.9 secTime delay (for 64G2): 0.1 – 9.9 sec

3rd harmonic neutral undervoltage (27TN):U/V setpoint: 0.1 – 9.9 VTime delay: 0.5 – 99.9 sec

Overexcitation, (24T, 24I, 24A):V/Hz pickup: 1 – 1.99 PUTime factor (24T-inverse): 0.1 – 99.99Time delay (instantaneous): 0 – 9.9 secTime delay (24A-alarm): 0 – 9.9 secRate of reset: 0 – 999 sec

Undervoltage, optional (27):U/V set point: 40 – 120 VTime factor: 0.1 – 99.99 secCurve select: Inverse/definite time

Overvoltage (59):O/V set point: 100 – 225 VTime factor: 0.1 – 99.99 sec

Over and underfrequency, up to four steps (81):O/F set point (each step): 45 –0 79.9 HzU/F set point (each step): 40 – 65 HzTime delay (each step): 0.05 – 99.99 secTime delay (U/F step 1): 0.1 – 999.9 sec

System Backup (51V):Overcurrent pickup: 0.1 – 3.2 A 0.5 – 16 ATime factor: 0.1 – 99.99 sec 0.1 – 99.99 sec

DGP Technical Specifications




3

DGP * * * * * *DGP Digital Generator Protection

1 1 A rated5 5 A rated

0 One power supply, 48 VDC1 One power supply, 110/125 VDC2 One power supply, 220/250 VDC3 Two power supplies, 48 VDC4 Two power supplies, 110/125 VDC

A With test blocks, gray caseB Without test blocks, gray case

A GE-MODEM communication protocolB ModBus® communication protocol

(not available with Function Group A/B)A Function Group A See DGP B Function Group B Selection Guide*C Function Group C on the right

A Revision level

Optional RS485 to RS232 converter available for use with ModBus® version

Ordering Note that the DGP relay with special configuration of printer port is required for the DEC1000 to function properly.

*DGP Selection Guide FUNCTION GROUPFUNCTIONS AND FEATURES A B CStator differential 87G X X XCurrent unbalance 46 X X XLoss of excitation 40-1, -2 X X XOC – voltage restraint 51V X X XStator ground 64G1 (fundamental OV) X X XOverexcitation 24 (Volts/Hz) X X XOvervoltage 59 X X XAccidental energization logic X X XSequential trip logic X X XVT fuse failure X X XOscillography capture X X XIRIG-B input X X XAnti-motoring 32 2 setpoints 1 setpoint 2 setpointsStator ground 64G2 (3rd Harm. UV) X — XNeutral OC 51GN — X XUndervoltage 27 — X XStator GND 27TN — X XUnderfrequency 81-U 4 setpoints 2 setpoints 4 setpointsOverfrequency 81-0 4 setpoints 2 setpoints 2 setpointsPrinter output X — XDEC1000 compatible — — XCommunication ports 2-RS232 2-RS232 2-RS232

DEC 1000A *** * 00CDEC

*** Select the three digit code from the DEC SelectionGuide† on the right or fill in desired functionassignment for the DEC1000 output relays R1-R11using Table 1 and submit with the order. Codes 001to 005 are already assigned and are available asdescribed. Any protection function available in thecompanion DGP relay can be selected for the DECoutput relay assignment

F Vps = 24 – 48 VDC

H Vps = 110 – 250 VDC

Example: DGP54BBCA – DGP rated 5 A, 50/60 Hz, 110/125 VDC redundant power supplies, no built-in testblocks, ModBus® protocol, function group C, revision A.

The following special DGP™ systems are also available. Refer to factory for other special requirements.DGP***AAA-0101 – Similar to "AAA" except single voltage-rated digital inputs, special logic for function51V and separate terminals for power supply inputs.

†DEC Selection GuideCODE R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11001 32-2 59 81O1 81-2 81U1 81U2 40 46-2 46-1 32-1 —002 32-1 64G2 46-1 32-2 64G1 40-1 87G-A 87G-B 87G-C 46-2 40-2003 87G➀ 64G➁ 32-2 51GN 24➀ 87G➀ 64G➁ 32-2 51GN 24➀ 32-1004 46T 51V➀ 59 81O1 81U1 46T 51V➀ 59 81O1 81U1 40-1005 46T 51V➀ 59 64G1 87G➀ DI3 DI4 32-1 — — —➂➂

➀ Indicates any phase – A, B, or C ➁ Indicates any zone – 1 or 2 ➂ Code assigned by GE

DGP GuideformSpecificationsFor an electronic version of the DGPguideform specifications, pleasevisit: www.GEindustrial.com/Multilin/specs, fax your request to 905-201-2098 or email to [email protected].


Faster ordersFaster ordersvia the webvia the web

49

3

Generator Backup Protection


Waveform sampling of current andvoltage inputs

High-resolution oscillography andplayback

Four zones of phase and ground mhodistance functions

Out-of-step blocking and trippingavailable

Phase and ground overcurrentinstantaneous backup

Ground time overcurrent backup

User-configurable I/Os

Integrated RMS metering

Horizontal and vertical models

Applications

Backup protection for generators ortransmission lines

Three-phase tripping applications



Out-of-step tripping

Over and undervoltage functions


Fault location, event and fault recording

Currents, voltages, watts, vars andfrequency

User Interfaces

LCD and keypad

RS232 and RS485 serial ports

System backup for generators

and transmission lines.

GE Multilin

Protection andControlThe LPS-O provides backup pro-tection for generators andtransmission lines. Advancedprotection functions include:

Distance

Four zones of phase step distanceprotection are provided. Functionsare positive sequence voltage po-larized mho characteristics. Thereach of the three forward lookingzones can be compensated for adelta-wye transformer.

Zone 4 is reversed and disregardsany transformer between the relayand the fault in the forward direc-tion. Zones 1, 2, 3, and 4 eachinclude independent timers forphase step distance protection.

Out-of-step blocking monitorsswing condition and blocks trip-ping. Out-of-step tripping logic isprovided with a choice of two orthree mho type characteristicswith adjustable shapes.

Forward and reverse share acommon maximum reach angle.Loss of synchronism or a powerswing between two areas of thepower system is detected bymeasuring the positive sequenceimpedance seen by the relay overa period of time as the powerswing develops.

Directional Ground Overcurrent

The ground directional functionsare forward and reverse negativesequence current and voltage op-erated. The ground instantaneousand TOC functions can be inde-pendently set with directionalcontrol.

Overcurrent Backup

The LPS-O provides instanta-neous phase and groundovercurrent functions. The phasebackup consists of an instanta-neous function. Groundovercurrent backup consists ofIOC and TOC functions. The TOCfunction includes four selectableand one programmable curve.

The ground overcurrent functionscan be controlled by the direc-tional functions. Both IOC andTOC functions can be set as non-directional or directional.

The LPS-O provides an adaptivesensitive current disturbance de-tector (fault detector) and anunbalanced current alarm to de-tect open or shorted CT leads.

Voltage

Three single-phase under andovervoltage detectors and a posi-tive sequence overvoltage detectorare provided.

Fuse failure logic detects a full orpartial loss of AC potential andblocks tripping of distance and directional functions. The LPS-Ohas a three-wire voltage inputsuitable for either delta or wyeconnected VTs.

Scheme Logic

The LPS-O provides user-programmable logic with up to40 gates and eight timers.

Manual Breaker Control

Manual circuit breaker tripping orclosing can be done locally or re-motely.

Multiple Settings Groups

Two separate groups of protec-tion settings may be stored in theLPS-O non-volatile memory. Theactive settings group can be se-lected by the user.

Configurable I/Os

All 12 contact converter inputsand 20 contact outputs (exceptfor alarms) are user-configurable.SCR tripping outputs are avail-able for high speed operation.

Monitoring andMeteringThe LPS-O provides sophisticatedmonitoring and metering func-tions that include:

Trip Circuit Monitor

DC battery voltage is monitoredacross each open trip contact. Analarm triggers when the voltagebecomes virtually zero. A currentsensor in series with each tripcontact is provided, to log anevent message on the DC tripcurrent status following the trip.

Metering

The LPS-O provides the followingRMS metering values:

Current (Ia, Ib, Ic, In) Voltage (Vab, Vbc, Vca) Watts (three-phase) Vars (three-phase) Frequency

The currents are calculated foreach phase, and voltages are cal-culated between phases. Theaccuracy is 1% of rated currentand voltage. The phasor value(magnitude and angle) of thephase currents and voltages arealso displayed.

LPS-O™ Generator Backup Protection


3

lpso_fbd.ai

LPS-O

67P7821P 67N50P50/51G

Metering

5927

G


Event Recording

The LPS-O stores up to 150 eventswith the date and time stamped tothe nearest millisecond. This aidsthe user with determining the se-quence of events, facilitatingdiagnosis and recovery.

Oscillography

The LPS-O captures current andvoltage waveforms and selectedinternal logic signals at 64 samplesper cycle. The unit can store fromsix events of 72 cycles each to 36events of 12 cycles each. The time,date, active settings, and fault re-port are stored with the datacapture. Prefault data can be setfrom one to eight cycles.

Oscillography can be triggered byinternal or external signals.Internal signals include trip out-puts or a programmable logicsignal. The supplied out-of-steptrip logic features a three secondoscillography data file consistingof phasor values of the currentsand voltages captured at a rate ofone per cycle. The LPS-O has thecapability to store the oscillo-graphy files in Comtrade format.

The LPS-O relay can playbackstored waveform files throughthe relays processor, allowing theuser to playback faults with dif-ferent settings.

Breaker Health

The breaker health threshold isset by the user to achieve “just intime” maintenance. When the cu-mulative value of the three-phasecurrents exceeds the threshold,an alarm occurs. The user can ad-just the threshold for breakerswith previous duty.

Self-Test Diagnostics

Self-test routines are performedduring power up and continue inthe background during service.Failures are categorized as eithercritical or non-critical alarm andrecorded in the event log.



3

B(C)

C(B)

A

A1 A8A17 A2

A3

D2

D6

D10

D4

D8

D12

D3

D7

D11

D5

D9

D13

D1

A5

A7

A4

A6

A8

B11

B29

A9

A10

A11

A12

A13

B1

A14

B2

A15

B3

A16

B4

B5

B23

B8

B26

D16

B14

B32

T1

CC1

CC5

CC9

CC3

CC7

CC11

CC2

CC6

CC10

CC4

CC8

CC12

UNMODULATEDIRIG-B

PL2A(REAR)

RS-232

RS-232

RS-485

RS-485

RS232

4 WIRE / 2 WIRE

PL3(REAR)

OPTIONAL

OPTIONAL SINGLE POLE MODEL

PL2B(REAR)

PL1(FRONT)

T3

T5

T2

T4

T6

C1

C2

A1

A2

A3

A4

A5

A9

A6

A10

A7

A11

A8

A12

KT1

KT2

KT3

KT4

CRITICALALARM

POWERSUPPLYALARM

FAULTLOCATION

I/V

A19

D18

D22

D26

D20

D24

D28

D19

D23

D27

D21

D25

D29

D17

A21

A23

A20

A22

A24

B27

B12

B28

B13

A25

A26

A27

A28

A29

B17

A30

B18

A31

B19

B21

B6

B24

B9

A32

B20

B22

B7

B25

B10

B30

B15

D32

B31

B16

730750A3.CDR

C1

IAC2

IARC3

IBC4

IBRC5 C13 C9 C11

Vs Va VcVs Vb VnICC6 C14 C10 C12

ICR

A B C

CURRENT INPUTS VOLTAGE INPUTS

CO

NFI

GU

RA

BLE

(S

HO

WN

WIT

H D

EFA

ULT

SE

TT

ING

S)

CO

NFI

GU

RA

BLE

(38

.5 T

O 3

00 V

DC

)

INP

UT

S

FIX

ED

OU

TP

UT

S

CONTROLPOWER G

RO

UN

DS

UR

GE

CONTROLPOWERSUPPLY

CONNECTIONAS REQUIRED

GROUNDBUS

TRIPPING DIRECTION

52

DB-25

DB-25

DB-9

LPSLine Protection System

GE Multilin

Typical Wiring



3

LPS-O Technical Specifications


TYPE TESTSInsulation test voltage: 2 kV, 50/60 Hz, 1 min

(high-pot) ANSI C37.90IEC 255-5

Impulse voltage withstand fast transient:5 kV peak, 1.2/50 µs, 0.5 JIEC 255-4ANSI C37.90.1

Surge withstand capability (SWC):ANSI C37.90.1IEC 255-22-1

Radio frequency interference withstand (RFI):ANSI C37.90.2IEC 255-22-3

Electrostatic discharge (ESD): IEC 255-22-2

ENVIRONMENTALAmbient temperature range:

Storage: -30° C to +75° COperation: -20° C to +60° C

Humidity: 95% without condensation

INSTRUCTION BOOKSingle-pole GEK 106202Three-pole GEK 106159

COMMUNICATIONSProtocol: ASCII, GE-MODEMPorts: Front: 1 DB9, RS232

Rear: 1 DB25, RS232 and 4 pin Phoenix, RS485 (standard): 1 DB25, RS232 or RS485 optional

Display: 4 line liquid crystal display standardKeypad: Full numeric keypad standard

POWER SUPPLYControl voltage: Range:

48 VDC 38.5 – 60.0 VDC110/125 VDC 88 – 150 VDC220/250 VDC 176 – 300 VDC

OUTPUTSCONTACT RATINGSTrip contact (T1 – T6): Continuous = 5 A

Make & carry = 30 A per ANSI C37.90Interrupting: 25 VAPickup <4 ms

Trip SCR (T1 – T6): Continuous = 5 AMake & Carry = 30 A per ANSI C37.90

Auxiliary(A1 – A12): Continuous = 5 A(C1, C2): Make & carry = 30 A

Interrupting: 25 VAPickup <8 ms

High speed (KT1 – KT4): Continuous = 0.5 AMax voltage = 280 VDC =Pickup <0.5 ms

INPUTSContact converter inputs: 5 – 300 VDC (jumper selectable)BURDENSCurrent circuits: In = 1 0.02 Ω at 5°

In = 5 0.12 Ω at 30°Voltage circuits: 50 Hz 0.20 VA

60 Hz 0.15 VADC battery:

Power supply: <20 WContact converters: 2.5 mA each

MONITORINGRecords: 6 – 36Record length: 72 – 12 cyclesPre-fault cycles: 1 – 8Samples per cycle: 64

METERINGFrequency: 50 or 60 HzVoltage (ph-ph): 100 – 120 VACCurrent (In): 1 or 5 AMaximum permissible current:

Continuous: 3 A for In = 1 A15 A for In = 5 A

Three sec: 50 x InOne sec: 100 x In

Maximum permissible AC voltage:Continuous: 138 VAC (ph-n)One minute: 3.5 x rated

PROTECTIONIn = 1 In = 5

Positive sequence angle: 45 – 90° 45 – 90°Zero sequence angle: 45 – 90° 45 – 90°Zero sequence current :Compensation (K0): 1.00 – 7.00 1.00 – 7.00

Zone 1, 2, 3 and 4 reach: 0.05 – 250 Ω 0.01 – 50 ΩZone 4 offset reach: 0.00 – 0.40 0.00 – 0.40

(Zone 4 is reversible)Zone 2 timer: 0.10 – 3.00 sec 0.10 – 3.00 secZone 3 and 4 timers: 0.10 – 10.0 sec 0.10 – 10.0 secPhase instantaneous OC: 0.4 – 32 A 2.0 – 160.0 AGround instantaneous OC: 0.1 – 16.0 A 0.5 – 80.0 AGround TOC: 0.04 – 3.00 A 0.20 – 15.00 ATOC curves: Inverse, very inverse, extremely

inverse, definite and custom

RECLOSURE (OPTIONAL)Reclose attempts: 4Synchronism check: Optional

Ordering

Accessories:

158D7358P1 L2 Flange for vertical mounting158D7359P1 KD Flange for vertical mounting

NOTE: For dimensions see ALPSbrochure.

LPS * * * * * * * * * * * *LPS Line protection system

O Phase distance relay with out-of-step tripping (system phase backup)

B Revision level B3 Three-phase tripping logic

5 5 A rated currentU For applications without series capacitors

0 48 VDC battery voltage1 110/125 VDC battery voltage2 220/250 VDC battery voltage

1 SCR trip outputs and contact channel interface2 Contact trip outputs and contact channel interface

3 Front RS232 com port and 2 selectable RS232/RS485 rear port(GE-MODEM/ASCII)

H Horizontal mountingV Vertical mounting

E Extended oscillography memory1 With out-of-step tripping

N No reclosure

Time Synchronization

An IRIG-B input is provided for timesynchronization via satellite signal.

Security

There are separate remote pass-words which permit view only,view and settings changes, or view,settings, and control capability.

Software

Windows®-based software pack-ages are included in the LPS-Oinstruction book.

LPS-O LINK – allows communi-cation with the relay using GEprotocol

XPRESSION BUILDER™ – allowsthe user to graphically designprogrammable logic settings andI/O assignments

The user may also obtain GE-DATAor GE-OSC to analyze oscillo-graphy data.

LPS-O GuideformSpecificationsFor an electronic version of the LPS-Oguideform specifications, pleasevisit: www.GEindustrial.com/Multilin/specs, fax your request to 905-201-2098 or email to [email protected].

™LPS-O is a trademark of GE Multilin.


55

3

M Family Digital Machine Protection Relay


Advanced 16-bit microprocessor

Configurable logic, curves, digital I/Osand LEDs

Flash memory for field upgrades

Two settings groups

Drawout case for easy maintenance

AC/DC power supply

Access via front panel keypad or commu-nication links

Compatible with M Family systems inhalf or full 19" racks

Applications

Protection and control for generators,motors, and transformers



Thermal image protection

Unbalance

Overcurrent and undercurrent

Monitoring and metering

Analog/digital oscillography

24 event recording

Restricted ground fault

User Interfaces

M+PC software for setting and monitoring

Front RS232 and rear RS485 ports usingModBus® RTU protocol up to 19,200 bps

Three-phase protection

for electrical machines.

GE Multilin

ProtectionThe MIG Digital Machine ProtectionRelay is designed specifically forsmall generators and motors. Aspart of the M Family, the MIGprovides superior protection whichincludes:

Thermal Image Unit

The thermal image algorithmprotects the machine from nega-tive sequence components thatcan cause overheating in the statorand rotor, as well as overload.

Unbalance

Protection against rotor damageis provided through definite timeor time curve models, to minimizeheating caused by the negativesequence current generated bysupply voltage unbalance.

Three-Phase TOC

This protection can be set from0.1 to 2.4 times In. Four separateANSI or IEC TOC curves can beselected including definite time,normal inverse, very inverse, andextremely inverse. Additionally, a user configurable curve is avail-able. Different time multipliersmay be set for each curve, opti-mizing curve selection for coordi-nation with fuses, machines,motors, transformers, or otherequipment.

Phase IOC Units

Adjustable phase IOC allows thepickup setpoint to be set from 0.1to 30 times In and a time delayfrom 0 to 100 seconds.

Ground TOC

This feature has the same curveselection choices and settings asthe phase TOC unit. The groundsignal is normally derived as theresidual sum of the three-phaseCTs eliminating the need for

MIG M Family Digital Machine Protection Relay


3

Functional Block Diagrams

MIGDigital Machine Protection

GENERATOR APPLICATION

MOTOR APPLICATION

52G

METERING

OSCILLOGRAPHY

EVENT RECORDING

CONFIGURABLE I/O

CONFIGURABLE LEDS

CONFIGURABLE LOGIC

50P

MIGDigital Machine Protection

37 66

3

52M

742751A2.ai

METERING

OSCILLOGRAPHY

EVENT RECORDING

CONFIGURABLE I/O

CONFIGURABLE LEDS

CONFIGURABLE LOGIC

GEN

50G 51G

50G 51G

M

49 46 51P 50P

49 46 51P

MIG

TRANSFORMER APPLICATION52

3

1

METERING

OSCILLOGRAPHY

EVENT RECORDING

CONFIGURABLE I/O

CONFIGURABLE LEDS

CONFIGURABLE LOGIC

742752A2.ai

50G 51G 87R

49 46 51P 50P

an additional ground sensor.Alternatively, for more sensitivedetection, an additional corebalance (zero sequence) groundsensor encircling the three-phaseconductors can be used.

Ground IOC Units

This protection has the samesettings and features as the phaseIOC unit.

Undercurrent

This function is used in motorapplications to detect a decreasein machine current caused byload decrease. The unit can beset as an alarm or trip.

Starts/Hour and Time To Restart

This feature counts the number ofmachine starts during a timewindow to ensure they do not

normal inverse IEC Avery inverse IEC Bextremely inverse IEC Cdefinite time definite time

ANSI IEC/BS142

TRIPCOIL

PHASE ACT

PHASE BCT

PHASE CCT

ZERO SEQUENCEGROUND CT

ZERO SEQUENCE 20 A MAXCIRCUIT BREAKERLOCATED BEFORE

POWER INPUT

GROUND SENSING CONNECTION

>>

>>

>>

<<

<<

>>

A

B

C

LINE

<<

<<52a 52a

CIRCUIT

AC or DC

BREAKER

TRIP COIL

Terminals B12, A12 and B11 must be connected to SELV(safety extra-low voltage) parts (on the PLC). They arenot to be tested for hipot test under any circumstance.

In basic model, inputs and outputs are configured as follows: INPUTSCC1: Disable 50P FunctionCC2: Disable 50N Function

CONTROLPOWER

GROUNDBUS

-

+

PROGRAMMABLECONTROLLER

A

B

GROUND

INPUT

INPUT

OUTPUTSOUT1: Phase TripOUT2: Ground TripOUT3: 50 TripOUT4: 49 Alarm

CAUTION: Fork or ring terminals must be used on the termainal block.NOTE: Suitable disconnect devices (switch or circuit breaker) recommended located near the relay.OVERVOLTAGE CATEGORY: II(*)

(**)

Internally fused1A/250V fast blow

NOTE: 14 AWG wiringrecommended (2.5 mm2)

742750A2.ai

C1

A5

A1 A2

A6

A8

A9

A7

A10B10

B9

B8

B7

B11(*)

A12(*)

B12(*)SDA

SDB

GND

GND

RS232

JXCC1

CC2

COM

C2 C3 C4 C5 C6 C7 C8

POWER

+/L -/NI N N N N

CURRENT INPUTS

SAFETYGROUND

TR

IP

B5

B6 RE

AD

Y

CO

MO

UT

4O

UT

3O

UT

1

RS

48

5

OU

T1/2

DIG

ITA

L O

UT

PU

TS

(**

)

DIG

ITA

LIN

TP

UT

S(*

*)

A IB IC IG

PHASE ACT

PHASE BCT

PHASE CCT

ALTERNATIVE CT WIRING FORRESIDUAL GROUND SENSING

A

B

C

C1 C2 C3 C4 C5 C6 C7 C8

I N N N N

CURRENT INPUTS

A IB IC IG

MIGDigital GeneratorProtection

GE Multilin

MIG M Family Digital Machine Protection Relay


3

Typical Wiring Note: Only for reference. For particular connections for any MIG model, please refer to its externalconnections drawing.

exceed the number programmedby the user. If the number isexceeded, the unit blocks any newattempts and keeps the trip contactclosed during the restart block time.

Locked Rotor

The MIG provides protectionduring extra-long start-ups whereexcessive overcurrent conditionscan damage rotors. This protectionis critical for power applicationswhere the motor drives the gener-ator into service.

Restricted Ground Fault

Restricted Ground Fault (RGF)protection provides sensitiveground fault detection for lowmagnitude fault currents thatmay not be detected by otherprotection functions. This protec-tion is often applied to machinesand transformers having imped-ance grounded wye windings.

Inputs and Outputs

The factory configuration of MIGinputs and outputs can be easilymodified using M+PC software.Two digital inputs and six relayoutputs are provided, four of themprogrammable. These config-urable outputs can be assignedeither to a set of pre-configuredvalues, or to an OR/NOT combina-tion of the same values.

MIG GuideformSpecificationsFor an electronic version of the MIGguideform specifications, pleasevisit: www.GEindustrial.com/Multilin/specs, fax your request to 905-201-2098 or email to [email protected].

Ordering

MIG P * * * E O 00 * 00 *MIG Digital machine protection relay

P Three-phase + ground relayA ANSI curvesI IEC curves

1 Phase CT In = 1A (pickup range: 0.1 – 2.4 A)5 Phase CT In = 5A (pickup range: 0.5 – 12 A)

1 Ground CT In = 1A (pickup range: 0.1 – 2.4 A)5 Ground CT In = 5A (pickup range: 0.5 – 12 A)N Sensitive ground CT In = 1 A

(pickup range: 0.005 – 0.12 A)F 24 – 48 VDC auxiliary voltage (range: 19 – 58 VDC)H 110 – 250 VDC (range: 88 – 300 VDC) and

110 – 230 VAC (range: 88 – 264 VAC)C Individual relayS Mounted in an M+ system†

† If relays are to be mounted in an M+ system, then either an M050 half 19” rack or M100 full 19” rack case must beordered. The M050 and M100 racks are provided at no additional cost based on the number of relays ordered.

Accessories

B1315P1 Depth reducing collar, reduces the mounting depth by 63 mm


GE Multilin 58

MGCMGCDigital Generator Protection

Three phase protection for small

generators.


I1, I2, I0 metering and last trip data

Part of a modular system

Independent 4" modules

1/4 standard 19" rack cases available

3 digit display and reset button

Applications

Small generators

Component for bigger generator packages


Unbalance or current reversal

Thermal protection

Phase and ground faults

59 www.GEindustrial.com/Multilin

MGC Digital Generator Protection

DescriptionThe MGC1000 are microproces-sor based, digital type, generatorprotection relays which providethermal protection for threephase generators, phase fault,ground fault, and unbalancedcurrent protection.

ApplicationsThe basic functions performed bythe MGC are:

46-protection against unbalancedcurrent or current reversal (nega-tive sequence)

49-thermal protection51-protection against phase faults51G-protection against ground

faults

The thermal image unit alsoprovides protection againstexcessive starts, given that oncea trip has been produced, thethermal unit does not reset untilthe temperature of the generatordecreases below a given value.

Construction accurate and reliable, with low

power consumption

Typical Wiring

rack mounting (case is 1/4 of arack wide, or 6.33")

LED indicators for Pick-Up, Trip,and System Availability

three digit display, where thefollowing information isdisplayed:F0. present state of the equip-mentF1. thermal state (%)F2. positive sequence current(xIs)F3. negative sequence current(xIs)F4. zero sequence current(xInGRN)F5. last trip (cause)F6. positive sequence currentduring the tripF7. negative sequence currentduring the tripF8. zero sequence currentduring the trip

anti-shock, flame resistant,sealed plastic cover, whichallows the trip indicator to bereset from outside the cover

elevated anti-seismic waveformresponse of the output relays

high reliability, solid statecomponents

microprocessor system

Standard Functions

Thermal Image Unit

Adjustable between 0.55 and 1.3times In in steps of 0.05 times In,through microswitches locatedon the front of the relay.

Selectable operating curves as afunction of the time constant (t1),adjustable between 1 and 20 minin steps of one min.

Negative Sequence compensa-tion (K1), adjustable from 1 to 6.

Cold time constant (t2) adjustablefrom 1 to 6 times the warm timeconstant.

Positive Sequence Unit (I1)

Adjustable between 1 and 8 timesthe value selected for the thermalimage unit.

Time delay of 0.05 to 10 sec in0.05 sec steps.

Negative Sequence Unit (I2)

The unit can operate either as aninstantaneous (adjustable timedelay) or according to an inversetime curve; where the operatingmode can be selected by theuser.

Instantaneous Mode (adjustabletime delay): 0.5-8 x Is in steps of0.1 x Is with time delay of 0.05 to10 sec in 0.05 sec steps.

Inverse Time Mode: Per the familyof curves in Fig. 3, truncated forselectable pick up settingsbetween 0.1-1.0 x Is in steps of0.1 x Is.

Zero Sequence Unit (I0)

Adjustable between 0.06 and 0.24x InGRN in steps of 0.01 x InGRN (InGRN = 5, 1 or 0.02 A).

Time Delay: 0.05 - 10 sec,adjustable in steps of 0.05 sec.

B10

B1

B9

B6

B3

B5

B4

B8

B7

720754A5.CDR

( - )

(+)

MANUALTRIP

MANUALCLOSE

SYST

EM

READ

YTR

IPTH

ERM

AL A

LARM 52/b

52/a

52/TC 52/CC

52

A

B

C

A9

A6

A8

A11

A12

A10

A7

A5

A3

A4

A2

A1

A

BC

GE Power Management

MGCDigital GeneratorProtection Relay

POWER SUPPLY

Auxiliary Voltage: 24-48 VDC/VAC, 48-125 VDC/VAC, 110-240 VDC/110-220 VAC (three models)

TYPE TESTS

Insulation:Between Each Terminal and the Chassis:

2000 VAC for one min at industrial freq.Between Independent Circuits:

2000 VAC for one min at industrial freq.Between Terminals of Each Output Circuit:

1000 VAC for one min at industrial freq.Interference Test: 2.5 kV longitudinal, 1 kV transversal,

class 111, per IEC 255-4Impulse Test: 5 kV peak, 1.2/50 ms, 0.5 J, per IEC 255-4Electrostatic Discharge: Per IEC 801-2, class IIIRadio Interference: Per IEC 801-3, class III

METERING

ACCURACYOperating Value: 5%Operating Time: 5% or 0.025 sec, whichever isgreaterClass E Error Index, Per BS142 for Current and OperatingTimes: Class E-5

ContactCharacteristicsMGC relays have two tripcontacts, one is normally open,and the other, electrically sepa-rate, is normally closed. Therelays incorporate two pre alarmtemperature contacts, electricallyseparate and with the same char-acteristics as the trip contacts.They also include a normallyclosed contact for equipmentalarm.

Trip Contacts

Closing: 3000 W resistive for 0.2sec with a max of 30 A and 300VDC.

Opening: 50 W resistive, with amax of 2 A and 300 VDC.

Continuous: 5 A.

Alarm Contacts

Closing: 5 A DC for 30 sec, at 250VDC maximum. Opening: 25 Winductive and 250 VDC max.

Continuous: 3 A.

SettingsWith the exception of the currenttap Is, the rest of the settings canbe made through three pushbuttons located on the front ofthe relay: ENTER; +; -; the select-ed setting value can be seen onthe display. A feature common toall the units is the possibility forthe user to disable them.


5

MGC Digital Generator Protection

60

APPROVALS

Compliant

PACKAGING

Approximate Weight:Net: 8.8 lbs (4 kg)Shipping: 11 lbs (5 kg)

ENVIRONMENTAL

Temperature:Operating: -10 to +55°CStorage: -40 to +70°C

Relative Humidity: to 95% without condensing

INPUTS

BURDENSBurden: Less than 1.5 W at all voltagesTHERMAL CAPACITY OF THE CURRENT CIRCUITSCurrent Capacity:

Continuous: 2 x In3 Sec: 50 x In1 Sec: 100 x In

Burdens:For Models: In = 5 A: 0.3 VA

In = 1 A: 0.3 VAIn = 0.2 A: 0.08 VA

MONITORINGREPEATABILITYOperating Value: 1%Operating Time: 2% or 0.025 sec, whichever isgreater

RATINGSNominal Frequency: 50 or 60 Hz, selectable by the userNominal Phase Current (In):

1 A or 5 ANominal Ground Current (InGRN):

5, 1 or 0.02 A (This last setting is recommended when used with toroidal current transformers)

MGC Technical Specifications

MGC10 * 0D010 * 00 *MGC10 Three-pole tripping; 8 rack unit case

0 5 phase sec, 5 ground sec1 5 phase sec, 1 ground sec2 5 phase sec, 0.02 ground sec*3 1 phase sec, 1 ground sec*

F 24 - 48 VDC/VAC place auxiliary voltageG 48 -125 VDC/VAC place auxiliary voltageH 110 - 240 VDC/110-220 VAC place auxiliary voltage

C Individual drawout housingS As part of a MID† drawout system

* This model should be used only with toroidal current transformers for theneutral current signal. For more details, refer to the instruction book.

† Modular Industrial Protection SystemExample: Microprocessor generator protection relay, with nominal phase currentof In = 5 A, ground current InGRN = 1 A, standard type, with thermal alarm contact,and auxiliary voltage of 48-125 V.

OrderingTo order select the basic model and the desired features from the Selection Guide below.


www.GEindustrial.com/pm

Order online –Order online –save timesave time

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