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• Phasesegregateddifferentialprotectionensuressecurehigh-speedsinglepoletripping

• CompleteIEC61850ProcessBussolutionprovidingresourceoptimizationandminimizingtotalP&Clifecyclecosts

• Reliableandsecureprotectiononlinesequippedwithseriescompensation

• Increasedsensitivitythroughdynamicchargingcurrentcompensationandcommunicationchannelasymmetrycompensation

• Advancedfaultanddisturbancerecording,includinginternalrelayoperatingsignalsthuseliminatingtheneedforexternalrecordingdevices

• PhasorMeasurementUnit-SynchronizedphasorinformationaccordingtoIEEEC37.118standard

• RobustnetworksecurityenablingCriticalInfrastructureProtectionthroughusercommandlogging,anddualpermissionaccesscontrol

• Ambienttemperaturemonitoringwithalarmingwhenoutsidetemperatureexceedsupperthresholds

• Overheadlinesincludingseriescompensatedlinesandundergroundcablesofdifferentvoltagelevels

• Circuitswithtappedtransformerfeeders• Suitableforthreeterminallineconfigurations,withchannel

redundancyanddirecttransfertripping(DTT)

• Wideareasystemmonitoringandcontrolandusingintegratedprotectionandsynchrophasormeasurement

• Singleanddual-breakercircuitsrequiringsinglepole/three-poleautoreclosingandindependentsynchrochecksupervision

• Distributedbusbarprotection

• Realtimemonitoringofremote,localanddifferentialperphasecurrents

• Oscillography-64samples/cycle,upto64records• EventRecorder-1024timetaggedevents,with0.5msscan

ofdigitalinputs• DataLogger-Upto16channelswithuserselectable

samplingrate• Synchronisedmeasurementofvoltage&currentand

sequencecomponentphasors-1to60phasors/sec• Multi-endedfaultlocationconsistentlyproviding2%

accuracy

Monitoring and Metering

Protection and Control• Phasesegregatedlinecurrentdifferentialwithadaptive

restraint&Grounddifferential,stubbusprotection• Thermalprotection,under/overfrequency,brokenconductor• PhaseDistance(threeZones)withindependentcompensation

settingsforin-zonepowertransformers• Grounddistance(threezones)withindependentselfand

mutualzerosequencecompensation,reversepower• Reversepower,OutofSteptrippingandpowerswingblocking• Thermaloverload,phase,neutralandnegativesequence

directionalovercurrent;andbrokenconductor• Over,UnderandrateofchangeofFrecuency,Synchronism

checkfordualbreakerapplications

Communications• Networkinginterfaces–100MbitFiberOpticEthernet,RS485,

RS232,RS422,G.703,C37.94• MultipleProtocols-IEC61850,DNP3.0Level2,ModbusRTU,

ModbusTCP/IP,IEC60870-5-104,EthernetGlobalData(EGD)• DirectI/O–secure,high-speedexchangeofdatabetween

L90sforDirectTransferTripapplications• EmbeddedManagedEthernetSwitchwith4-100MbitFiber

opticportsand2copperports

FEATURES

APPLICATIONS

KEY BENEFITS

EnerVista™ Software• GraphicalLogicDesignerandLogicMonitortosimplify

designingandtestingprocedures• Documentandsoftwarearchivingtoolsettoensure

referencematerialanddeviceutilitiesareup-to-date• EnerVista™Integratorprovidingeasyintegrationofdatain

theL90intoneworexistingmonitoringandcontrolsystems

• Robustcommunicationswithupto8HardFiberBricks• SeamlessintegrationwithexistingL90functions• Redundantarchitecturefordependabilityandsecurity

IEC 61850 Process Bus Interface

L90Multilin™

LINE CURRENT DIFFERENTIAL SYSTEM

Phasesegregatedlinecurrentdifferentialanddistanceprotection

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Protection and ControlThe L90 is a high-end cost effectiveline current differential protection relayintendedfortransmissionlinesandcablesof different voltages levels providingreliableandsecureoperationevenundertheworstcasepowersystemconditions.The L90 provides high-speed phase-segregated fault clearance suitable forsingleandthree-poletrippingapplications.PartoftheUniversalRelayfamily,theL90comeswithavarietyofversatilefeaturestruly integrating protection, monitoring,metering, communicationandcontrol inoneeasy-to-usedevice.TheUniversalRelayfamilyoffersahighdegreeofmodularityin its design and functionality providingsuperior performance in protection andcontrolmeetingthetoughestrequirementsofthemarketplace.

Segregated Current Differential ProtectionThe L90 is a phase segregated currentdifferential protection relay, which usessuperior and patented algorithms toaddress the challenges of bandwidth ,security,dependabilityand sensitivity incurrentdifferentialrelaying.Bandwidth requirements are effectivelyaddressedbymeansofapatentednewdata consolidation technique called“phaselets”.Thispermitsapplicationwithinacommunicationsbandwidthof64Kbps,

andcandetect faultswithinahalfcyclepluschanneldelay.The L90 innovative dual slope adaptiverestraint characteristic, based onestimates ofmeasurement errors, allowtherelaytobesecureonsevereexternalfaults while maintaining sensitivity forinternal faults. The estimate of errors intheinputcurrentspermitsmoresensitivesettingsthanthoseusedinthetraditionalpercentdifferentialschemes.TheL90approachtoclocksynchronizationrel ies upon precise distr ibuted

synchronization. Clocks are phasesynchronized to each other andfrequency synchronized to the powersystem frequency.Each relaycomparesitsclocktothephaseoftheotherclocksandmakesappropriateadjustments.Thisallows forgreater transient ride-throughfor power system and communicationsdisturbances.

Enhancedadditionalsecurity isprovidedby a sensitive current disturbancedetector,whichcanbeusedtosupervisethecurrentdifferentialelement.

The L90 is the single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring as shown.

831706AS.CDR

L90 Line Differential System

52

Monitoring CLOSE TRIP

Data From/To Remote End(via Dedicated Communications)

MeteringFlexElementTM Transducer

Inputs

50DD 51N50N67P87L 21P 68 7850BF51_251P50_2

32 49

79

50P 21G67N/G

81U/O

27P

27X59N

59X

59P

25

51G50G

DEVICENUMBER

21G21P2527P27X50BF50DD

50G50N50P50_251G51N51P51_25259N59P59X67N67P67_268787987L

Ground DistancePhase DistanceSynchrocheckPhase UndervoltageAuxiliary UndervoltageBreaker FailureAdaptive Fault Detector

Ground Instantaneous OvercurrentNeutral Instantaneous OvercurrentPhase Instantaneous OvercurrentNegative Sequence Instantaneous OvercurrentGround Time OvercurrentNeutral Time OvercurrentPhase Time OvercurrentNegative Sequence Time OvercurrentAC Circuit BreakerNeutral OvervoltagePhase OvervoltageAuxiliary OvervoltageNeutral Directional OvercurrentPhase Directional OvercurrentNegative Sequence Directional OvercurrentPower Swing BlockingOut-of-Step TrippingAutomatic RecloserSegregated Line Current Differential

FUNCTION

ANSI DEVICE NUMBERS AND FUNCTIONS

(senstive current disturbance detector)

Functional Block Diagram

L90 - Protection, Metering, Monitoring and Control

DeviceNumber Function21G GroundDistance21P PhaseDistance25 SynchronismCheck27P PhaseUndervoltage27X AuxiliaryUndervoltage32 SensitiveReversePower49 ThermalOverload50BF BreakerFailure50DD CurrentDisturbanceDetector50G GroundInstantaneousOvercurrent50N NeutralInstantaneousOvercurrent50P PhaseInstantaneousOvercurrent50_2 NegativeSequenceInstantaneousOvercurrent51G GroundTimeOvercurrent51N NeutralTimeOvercurrent51P PhaseTimeOvercurrent51_2 NegativeSequenceTimeOvercurrent52 ACCircuitBreaker59N NeutralOvervoltage59P PhaseOvervoltage59X AuxiliaryOvervoltage67_2 NegativeSequenceDirectionalOvercurrent67N NeutralDirectionalOvercurrent67P PhaseDirectionalOvercurrent68 PowerSwingBlocking78 Out-of-stepTripping79 AutomaticRecloser81U/O Under/OverFrequency,df/dt87L SegregatedLineCurrentDifferential

ANSIDeviceNumbers&Functions

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Ground Differential “87G”

The Ground Differential function “87G”protects against low-current single line-to-ground faults. It has a single slopecharacteristicandusesthevectorialsumofall in-zonephasecurrentstocalculatetheNeutraldifferentialcurrent. with themaximum value of phase current beingusedas restraint . This function togetherwith the phase differential deliversenhancedsensibilityandselectivitytotheprotectionscheme.

Charging Current Compensation

For long transmission l ines andundergroundcables,thechargingcurrentmaybelargeandresultinexcessivelyhighpickupsettings.TheL90candynamicallycompensate the charging current thusincreasingitssensitivitytothefaultcurrentonlongtransmissionlines.

Enhanced Monitoring Features

TheL90usesanadvancederrordetectionand supervising functions to secure theL90againstmisoperationduetoerroneousdata. High bit errors are addressed bymeansofcomputinga32bitCRCchecksumseffectivelyaddressingtheconcernsofmultiplebiterrorsduetohighchannelnoise.On multiplexed channels, channelasymmetrymaybeexpectedduetopathswitching spurious differential currents,which can endanger the security of thedifferential system. By using GPS timesynchronization, up to 10ms of channelasymmetrycanbecompensatedfor.ExtrasecurityhasbeenimplementedintheL90toensureproperoperationontheeventofIRIG-Bsignalfailure.Integrated channel monitoring providesreal-time diagnostic data on the healthof the L90. Communications channeldeterioration or failure will activate analarm,andcanbeusedtoenablebackupprotection. Channel propagation delayismonitored and adjusted according tovariationsincommunicationpaths.

Communication Topologies

Relays can communicate through directfiber,RS422,G.703,IEEEC37.94interfacesat 64Kbps, with extensive channelmonitoringanddiagnosticsare included.Inacurrentdifferentialscheme,theL90sexchange data via the communication

functions in L90 comewith three zonesof phase and ground distance (mho orquad). The phase distance elementscome with built-in in-zone transformercompensation. The L90 also providesa load encroachment element , whichsupervises the distance elements underheavylineloadingconditions.

Overvoltage and undervoltage protection

Longlinesunderlightlyloadedconditionsor no-load may experience voltagesexceeding rated per unit voltage levelof the line. Use the phase overvoltageelementoftheL90toinitiatealocaltripaswellasaremotetripusingdirecttransfertrip.

Overcurrent Functions

TTheL90providesthermaloverload,timeand instantaneousovercurrentelementsfor phase, neutral, ground, negativesequence,phaseandneutraldirectional.Any of them can run in parallel withprimarydifferentialprotectionorcanbeprogrammedtorunwhenthedifferentialelementisnotavailable.

Typical two and three terminal application of L90. L90 supports a variety of media cards for signalling between L90’s including direct multimode or single mode fibre, RS422, G.703 and IEEE C37.94.

Typical Applications

link, acting either as master collectingdata, making calculations and makingall relevant trip and restraint decisions,or as slave only transmitting currentdatatotheoneactingasmaster.Fortwoterminalapplications,usetheredundantcommunicationscapabilityoftheL90foroptimalreliabilityofthecurrentdifferentialline protection. For this scheme, datais continuously transmitted over bothchannels, so if a failure occurs, the L90willcontinuetoprovidecurrentdifferentialprotection.Forthreeterminalapplications,advancedinter-relay communication featureseliminate the need for redundantcommunicationchannelsduetotheabilityoftheL90toautomaticallyswitchbetweenmaster and slave mode, maintaining adependablesystemevenwithafailureofoneofthecommunicationchannels.

Distance

Separate high-speed phase and grounddistanceelementsareprovidedforoptionalsupervisionwithtappedtransformersandas a back-up during channel failures orunavailability. The back-up distance the

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Single-Pole Tripping

TheL90relayusesastate-of-the-artdualphase selection algorithm that providesfastandaccuratefaulttypeidentificationevenunderweak-infeedconditions.

Direct transfer trip (DTT)

UsethedirecttransfertripfeatureofL90to trip remote breaker. Both single poleand three pole direct transfer trips aresupported. Up to eight signals can besentoverpilotcommunicationschannelsselectable through user configurablelogic.

Autoreclosing

TheL90providesmulti-shotautoreclosingforsinglepoleorthreepoleautorelcoseonall typesof faultswith independentlysettable dead time for each shot . Auto-reclose can be dynamically blocked byuser programmable logic. Four differentauto-relcosemodesareavailableenablingtheuserstoselectthereclosingmodetosuitspecificapplications.

Synchronism Check

The L90 monitors voltage difference,phaseangledifferenceandslipfrequencyto ensure proper breaker closure as peruser requirements. The L90 providesadditionalenhancementsinsynchronizingby allowing synchrocheck verificationbetween local and remote line terminalvoltages.

Breaker Failure

TheL90isabletoprovidefullyindependentbreakerfailureprotectionforthebreakersassociatedtothelinewhenconnectedtoasubstationwithabreaker-and-a-halforringbusarrangement. TheL90providesthe required elements to perform twoindependentbreakerfailurefunctions.

Multiple Breaker Configurations

The L90 supports multi-breaker busbarconfigurationssuchasbreaker-and-a-halforringbusarrangements,providingdualbreaker auto reclose, dual synch-checkelements,anddual independentBreakerFailure elements. The design providessecure operation during external faultswithpossibleCTsaturation

Special Applications - Distributed Busbar

Use the L90’s capability of supportingup to 4 directly connected CTs forapplicationswheretheuseofconventionalbus differential relaying is not practicalor economically feasible. The L90 canbe used to protect both line and busesby measuring currents from the feederCTsasshown.TheL90providesprimaryprotection for both the buses and thecircuitconnectingthem.

IEC 61850 Process BusThe IEC 61850 Process Bus moduleis designed to interface with theMultilin HardFiber™ System, allowing

bi-directional IEC 61850 fiber opticcommunications. The HardFiber Systemisdesigned to integrate seamlesslywiththeexistingUniversalRelayapplications,includingprotection functions,FlexLogic,meteringandcommunications.HardFiberSystembenefits:

• CommunicatesusingopenstandardIEC61850messaging

• DrasticallyreducesP&Cdesign,installationandtestinglaborbyeliminatingindividualcopperterminations

• IntegrateswithexistingC70’sbyreplacingtraditionalCT/VTinputswithIEC61850ProcessBusmodule

• DoesnotintroducenewCyberSecurityconcerns

Advanced AutomationTheL90incorporatesadvancedautomationfeatures including powerful FlexLogic™programmablelogic,communication,andSCADAcapabilitiesthatfarsurpasswhatisfoundintheaveragelinerelay.TheL90integratesseamlesslywithotherURrelaysforcompletesystemprotection.

FlexLogic™

FlexLogic™ is the powerful UR-platformprogramming logic engine thatprovidestheabilitytocreatecustomizedprotectionandcontrolschemestherebyminimizingtheneed,andassociatedcosts,ofauxiliarycomponentsandwiring.Using FlexLogic, the L90 can providerequiredtrippingandcustomschemelogicfor line breaker control and interlockinganddynamicsettinggroupchanges.

Scalable HardwareThe L90 is available with a multitudeof I/O configurations to suit the mostdemanding application needs. Theexpandable modular design allows foreasyconfigurationandfutureupgrades.

• Flexible,modularI/Ocoveringabroadrangeofinputsignalsandtrippingschemes

• Mechanicallylatchingoutputscanbeusedtodevelopsecureinterlockingapplicationsandreplaceelectromechanicallockoutrelays

FlexLogicTM Designer

Flexlogic™ allows for customizing the L90 to operate and control the breakers and other auxiliary devices needed to fit most line protection schemes and applications.

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Monitoring and MeteringTheL90includeshighaccuracymeteringand recording forallACsignals.Voltage,current,andpowermeteringarebuiltintothe relay as a standard feature. CurrentandvoltageparametersareavailableastotalRMSmagnitude,andasfundamentalfrequencymagnitudeandangle.

Fault and Disturbance Recording

The advanced disturbance and eventrecording features within the L90 cansignificantly reduce the timeneeded forpostmortem analysis of power systemeventsandcreationofregulatoryreports.Recordingfunctionsinclude:

• SequenceofEvent(SOE)-1024timestampedevents

• Oscillography,

-64digital&upto40Analogchannels

• DataLogger,disturbancerecording–16channelsupto1sample/cycle/channel

• FaultReports

-Powerfulsummaryreportofpre-faultandfaultvalues

• Multi-endedfaultlocation

-calculatingfaultlocationontwoorthreeterminallineswith2%accuracy

The very high sampling rate and largeamount of storage space available fordata recording in the L90 can eliminatetheneed for installingcostlystandalonerecordingequipment.

CB1

CT1

CB2

CT2

CB3

CT3

CB4

BUS1

CT4

L90-2

Com

mun

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ion

chan

nel

CB5

CT5

CB6

CT6

CB7

CT7

BUS2

L90-1

831783A1.CDR

PROTECTEDLINE

VT3

VT21PH

CT2CB2CB1CT1

VT11PH

L90

Example of Distributed Bus Differential Protection Application. L90 Breaker-and-a-Half Application example.

Advanced Device Health Diagnostics

TheL90performscomprehensivedevicehealth diagnostic tests during startupand continuously at runtime to testits own major functions and criticalhardware.Thesediagnostictestsmonitorforconditionsthatcould impactsecurityandavailabilityofprotection,andpresentdevicestatusviaSCADAcommunicationsand front panel display. Providingcontinuousmonitoringandearlydetectionof possible issueshelps improve systemuptime.

• Comprehensivedevicehealthdiagnosticperformedduringstartup

• MonitorstheCT/VTinputcircuitrytovalidatetheintegrityofallsignals

CommunicationsTheL90providesforsecureremotedataand engineering access,making it easyand flexible to use and integrate intonew and existing infrastructures. Fiberoptic Ethernet provides high-bandwidthcommunicationsallowingforlow-latencycontrolsandhigh-speed file transfersofrelayfaultandeventrecord information.Theavailable redundantEthernetoptionand the embedded managed Ethernetswitchprovidethemeansofcreatingfaulttolerant communicationarchitectures inaneasy,cost-effectivemanner.TheL90supportsthemostpopularindustrystandardprotocolsenablingeasy,directintegration into monitoring and SCADAsystems.

• IEC61850

• DNP3.0

• IEC60870-5-104

• ModbusRTU,ModbusTCP/IP

Interoperability with Embedded IEC 61850

TheL90with integrated IEC61850canbeused to lower costs associated with lineprotection, control and automation. GEEnergy’s leadership in IEC 61850 comesfrom thousands of installed devices andfollowsonMultilin’sextensivedevelopmentexperiencewithUCA2.0.

• ReplaceexpensivecopperwiringbetweendeviceswithdirecttransferofdatausingGOOSEmessaging

• ConfiguresystemsbasedonIEC61850andalsomonitorandtroubleshoottheminreal-timewithEnerVista™ViewpointEngineer

• IntegrateMultilinIEDsandgenericIEC61850-compliantdevicesseamlesslyinEnerVista™ViewpointMonitoring

Multi-Language

TheL90supportsEnglish,French,Russian,andChineselanguagesonthefrontpanel,EnerVista™ setup software, andproductmanual. Easily switch between Englishandanadditional languageon the localdisplayswithoutuploadingnewfirmware.

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EnerVistaTM SoftwareThe EnerVista™ Suite is an industry-leading set of software programs thatsimplifies everyaspect of using the L90relay.TheEnerVista™suiteprovidesallthetoolstomonitorthestatusoftheprotectedasset,maintain the relay, and integrateinformation measured by the L90 intoDCS or SCADA monitoring systems.Convenient COMTRADE and Sequenceof Events viewers are an integral partof the UR Setup software includedwitheveryURrelay,tocarryoutpostmortemeventanalysistoensureproperprotectionsystemoperation.

EnerVista™ Launchpad

EnerVista™ Launchpad is a powerfulsoftwarepackagethatprovidesuserswithallofthesetupandsupporttoolsneededfor configuringandmaintainingMultilinproducts. The setup software withinLaunchpadallowsconfiguringdevicesinreal-timebycommunicatingusingserial,Ethernet , or modem connections, orofflinebycreatingsettingfilestobesenttodevicesatalatertime.Included in Launchpad is a documentarchiving and management systemthat ensures critical documentation isup-to-date and availablewhen needed.Documentsmadeavailableinclude:

• Manuals&Brochures

• ApplicationNotes

• GuideformSpecifications

• WiringDiagrams

• FAQ’s

• ServiceBulletins

Viewpoint Monitoring

Viewpoint Monitoring is a simple-to-useand full-featured monitoring and datarecording software package for smallsystems.ViewpointMonitoringprovidesacompleteHMIpackagewiththefollowingfunctionality:

• Plug-&-PlayDeviceMonitoring

• SystemSingle-LineMonitoring&Control

• AnnunciatorAlarmScreens

• TrendingReports

• AutomaticEventRetrieval

• AutomaticWaveformRetrieval

Viewpoint Engineer

ViewpointEngineerisasetofpowerfultoolsthatwillallowtheconfigurationandtestingofURrelaysatasystemlevelinaneasy-to-usegraphicaldrag-and-dropenvironment.ViewpointEngineerprovidesthefollowingconfigurationandcommissioningutilities:

• GraphicalLogicDesigner

• GraphicalSystemDesigner

• GraphicalLogicMonitor

• GraphicalSystemMonitor

Viewpoint Maintenance

ViewpointMaintenanceprovidestoolsthatwillcreatereportsontheoperatingstatusoftherelay,simplifythestepstodownloadfaultandeventdata,andreducetheworkrequired for cyber-security complianceaudits. Tools available in ViewpointMaintenanceinclude:

• SettingsSecurityAuditReport

• DeviceHealthReport

• SingleClickFaultDataRetrieval

EnerVista™ Integrator

EnerVista™ Integrator is a toolkit thatallows seamless integration of Multilindevices into new or existing automationsystems.IncludedinEnerVista™Integratoris:

• OPC/DDEServer

• MultilinDrivers

• AutomaticEventRetrieval

• AutomaticWaveformRetrieval

User InterfaceThe L90 front panel provides extensivelocal HMI capabilities. The local displayisusedformonitoring,statusmessaging,faultdiagnosis,anddeviceconfiguration.Userconfigurablemessagesthatcombinetextwithlivedata,canbedisplayedwhenuser-definedconditionsaremet.

Record the operation of the internal L90 elements and external connected devices with 1ms time-stamped accuracy to identify the Sequence of Operation of station devices during line faults and disturbances.

Power System Troubleshooting

Graphically view zone settings for ground phase distance elements for the selected zones and the power swing detection element.

Analyze line faults using both analog and digital power system quantities that are measured and recorded up to a rate of 64 samples per cycle.

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Typical Wiring

L90-H00-HCL-F8F-H6G-L6D-N6K-S6C-U6H-W7A

L90

A B C

52

1

Powersupply

9

CPU

7

COM

8

CT/VT

6Inputs/outputs

*

6Inputs/outputs

*

6Inputs/outputs

*

6

Inputs/outputs

6Inputs/outputs

*

JU MX LW KV BHT DN GS FPR

RS-232

DB-9

(front)

UR COMPUTER

1

TXD RXD

RXD TXD

SGND SGND

1 832

207645

22

CONNECTOR

PERSONALCOMPUTER

CONNECTOR

2 23 34 45 56 67 78 89 9

DC

TOREMOTE

L90

OPTIONAL

TC

TC

N

2

1H1a

H2b

H1cH1b

H2c

H2a

H4a

H4c

H3bH3a

H4b

H3c

SURGE

H6a

H8a

H5b

H7b

H8b

H5a

H7a

H6c

H8c

H5c

H7c

H1

H2

H3

H4

I

V

I

V

I

V

I

V

6G

U8a

U7b

U7a

U8c

U7c U1b

U2b

U3b

U4b

U5b

U6b

U1a

U2a

U3a

U4a

U5a

U6a

U1c

U2c

U3c

U4c

U5c

U6c

SURGEU8b

U1

U5

U2

U6

U3

U4

6H I

V

I

V

I

V

I

V

I

V

I

V

N7a

N1a

N2b

N7c

N1c

N7b

N1b

N8cN8b

N2c

N8a

N2a

N4a

N5b

N4c

N6b

N3bN3a

N6a

N4b

N5c

N5a

N3c

N6c

6K N1

N5

N2

N6

N3

N7

N4

N8

CRITICALFAILURE

OUTPUT

CONTROLPOWER

HILO

1

FILTERSURGE

B3a

B1b

B8a

B6b

B8b

B6a

B3b

B1aB2b

B5b

Tx1 Rx1

Tx2 Rx2

INTE

R-RE

LAY

CO

MM

S.W

7A

FIBER

FIBER

6C

S1

S5

S2

S6

S3

S7

S4

S8

S7a

S1a

S2b

S7c

S1c

S7b

S1b

S8cS8b

S2c

S8a

S2a

S4a

S5b

S4c

S6b

S3bS3a

S6a

S4b

S5c

S5a

S3c

S6c

L6a

L8a

L5b

L7b

L5a

L7a

L6c

L8c

L5c

L7c

SURGE

L1a

L8b

L4c

L2c

L3aL3c

L1c

L3b

L1b

L4a

L2a

6D

minimum

PROVIDED

8L

F1c

F4a

F3c

F2c

F4c

F1a

F4b

F1b

F2a

F3a

F2b

F3b

IA IB IC IGIA5

IA1

IB5

IC5

IG5

IB1

IC1

IG1

F8c

F8a

F5a

F5c

F7c

F6a

F7a

F6c

VX

VA VB

VC VX

VA VB

VC

Multilin

com

10BaseFL

10BaseFL

10BaseT

D1aD2a

D4bD3a

D4a IRIG-BInput

IRIG-BOutput

COM1

RS485

ALTERNATE

NORMAL

Tx2Rx2

Tx1Rx1

BNC

BNC

FibreOptic

*

RemoteDevice

Shielded

Co-axial

Co-axial

com

10BaseFL

10BaseFL

10BaseT

D1aD2a

D4bD3a

D4a IRIG-BInput

IRIG-BOutput

COM1

RS485

ALTERNATE

NORMAL

Tx2Rx2

Tx1Rx1

BNC

BNC

FibreOptic

*

RemoteDevice

Shielded

Co-axial

Co-axial

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Ordering Notes:1-Forverticalmountingordercodes,pleasevisitouronlinestore2-ToviewthelatestoptionsavailablefortheL90,ortoordertheURClassicFrontPanel,pleasevisitouronlinestoreformoredetails.

• URApplicationsILearningCD TRCD-URA1-C-S-1

• MultilinkEthernetSwitch ML2400-F-HI-HI-A2-A2-A6-G1

• ViewpointEngineer VPE-1

• ViewpointMaintenance VPM-1

• ViewpointMonitoringIEC61850 VP-1-61850

Accessories for the L90 • ViewGuideformspecifications

• Downloadtheinstructionmanual

• Reviewapplicationsnotesandsupportdocuments

• BuyaL90online

• ViewtheURFamilybrochure

Visit www.GEMultilin.com/L90 to:

Ordering

L90 - * 00 - H * * - F ** - H ** - L ** - N ** - S ** - U ** - W/X ** For Horizontal MountBaseUnit L90 BaseUnitCPU E RS485+RS485(IEC61850optionnotavailable) G RS485+Multi-modeST10BaseF H RS485+Mutli-modeSTRedundant10BaseF J RS485+Multi-modeST100BaseFX K RS485+Multi-modeSTRedundant100BaseFX N RS485+10/100BaseT S RS485+6port,100Mbps,ManagedEthernetSwitchSoftware 00 NoSoftwareOptions 02 BreakerandHalfsoftware 03 IEC61850 05 BreakerandHalf+IEC61850 06 PhasorMeasurementUnit(PMU) 07 IEC61850+PhasorMeasurementUnit(PMU) 08 Breaker&Half+PhasorMeasurementUnit(PMU) 09 Breaker&Half+IEC61850+PhasorMeasurementUnit(PMU)Mount/Coating H Horizontal(19"rack)-Standard A Horizontal(19"rack)-HarshChemicalEnvironmentOption V Vertical(3/4size)-Standard B Vertical(3/4size)-HarshChemicalEnvironmentOptionUserInterface K EnhancedEnglishFrontPanel L EnhancedEnglishFrontPanelwithUser-ProgrammablePushbuttons M EnhancedFrenchFrontPanel N EnhancedFrenchFrontPanelwithUser-ProgrammablePushbuttons Q EnhancedRussianFrontPanel T EnhancedRussianFrontPanelwithUser-ProgrammablePushbuttons U EnhancedChineseFrontPanel V EnhancedChineseFrontPanelwithUser-ProgrammablePushbuttons F VerticalFrontPanelwithEnglishdisplayPowerSupply H 125/250VAC/DC H RH 125/250VAC/DCwithredundant125/250VAC/DC L 24-48V(DConly)CT/VTDSP 8L 8L Standard4CT/4VTw/enhanceddiagnostics 8N 8N Standard8CTw/enhanceddiagnosticsIEC61850ProcessBus 81 8PortIEC61850ProcessBusModuleDigitalI/O XX XX XX XX XX NoModule 4A 4A 4A 4A 4A 4SolidState(NoMonitoring)MOSFETOutputs 4C 4C 4C 4C 4C 4SolidState(Currentw/optVoltage)MOSFETOutputs 4D 4D 4D 4D 4D 16DigitalInputswithAuto-Burnish 4L 4L 4L 4L 4L 14Form-A(NoMonitoring)LatchableOutputs 67 67 67 67 67 8Form-A(NoMonitoring)Outputs 6C 6C 6C 6C 6C 8Form-COutputs 6D 6D 6D 6D 6D 16DigitalInputs 6E 6E 6E 6E 6E 4Form-COutputs,8DigitalInputs 6F 6F 6F 6F 6F 8FastForm-COutputs 6K 6K 6K 6K 6K 4Form-C&4FastForm-COutputs 6L 6L 6L 6L 6L 2Form-A(Currentw/optVoltage)&2Form-COutputs,8DigitalInputs 6M 6M 6M 6M 6M 2Form-A(Currentw/optVoltage)&4Form-COutputs,4DigitalInputs 6N 6N 6N 6N 6N 4Form-A(Currentw/optVoltage)Outputs,8DigitalInputs 6P 6P 6P 6P 6P 6Form-A(Currentw/optVoltage)Outputs,4DigitalInputs 6R 6R 6R 6R 6R 2Form-A(NoMonitoring)&2Form-COutputs,8DigitalInputs 6S 6S 6S 6S 6S 2Form-A(NoMonitoring)&4Form-COutputs,4DigitalInputs 6T 6T 6T 6T 6T 4Form-A(NoMonitoring)Outputs,8DigitalInputs 6U 6U 6U 6U 6U 6Form-A(NoMonitoring)Outputs,4DigitalInputs 6V 6V 6V 6V 6V 2Form-A(Curw/optVolt)1Form-COutput,2LatchingOutputs,8DigitalInputsTransducerI/O 5A 5A 5A 5A 5A 4dcmAInputs,4dcmAOutputs 5F 5F 5F 5F 5F 8dcmAInputsInter-RelayCommunications 7A 820nm,multi-mode,LED,1Channel 7B 1300nm,multi-mode,LED,1Channel 7C 1300nm,single-mode,ELED,1Channel 7H 820nm,multi-mode,LED,2Channels 7I 1300nm,multi-mode,LED,2Channels 7J 1300nm,single-mode,ELED,2Channels 7S G.703,2Channels 7W RS422,2Channels 7V RS422,2Channels,DualClock 73 1550nm,single-mode,LASER,2Channel 76 IEEEC37.94,820nm,multimode,LED,1Channel 77 IEEEC37.94,820nm,multimode,LED,2Channel 2B C37.94SM,1300nmSinglemode,ELED,2ChannelSinglemode 2S 6port,100Mbps,ManagedEthernetSwitch,HI(125/250VAC/DC) 2T 6port,100Mbps,ManagedEthernetSwitch,LO(24-48Vdc)

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