155 Transformer Protection g Digital Energy • Secure high-speed protection for transformers, compliant with IEEE C37.91 • Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P&C life cycle costs • Improved security for transformer energization and inrush provided through a superior Adaptive 2nd Harmonic Restraint algorithm • Ambient temperature monitoring with alarming when outside temperature exceeds upper thresholds • Integrated transformer thermal monitoring for asset management maintenance optimization • Sensitive ground fault protection provides low impedance differential protection down to 5% of the winding to limit transformer damage • Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control • Advanced automation capabilities for providing customized protection and control solutions • Advanced fault and disturbance recording, including internal relay operating signals thus eliminating the need for redundant recording devices • Reduced relay to relay wiring and associated installation costs through high-speed inter-relay communications • Transformer asset monitoring using Hottest Spot, Loss-of-Life and Aging Factor • Applicable for transformers with windings in a ring bus or breaker-and-a-half configuration • Reliable and secure protection for three-phase transformers, autotransformers, reactors, split phase and phase angle regulating transformers • Stand-alone or component in automated substation control system • Metering - current, voltage, power, energy, frequency, temperature, transformer monitoring • Synchronized measurement of voltage, current and component phasor “PMU” – 1 to 60 phasor/sec • Oscillography – analog and digital at 64 samples/cycle • Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs • Data Logger - 16 channels with sampling rate up to 1 sample / cycle • Security Audit Trail for tracking changes to T60 configuration Monitoring and Metering Protection and Control • Dual slope, dual breakpoint differential restraint characteristic restrained and unrestrained differential • 2nd harmonic inrush and overexcitation inhibit • Transformer overexcitation and thermal overload protection • Restricted ground fault • Loss-of-Life, Aging Factor, Hottest Spot • 3 zone back-up distance protection with power swing detection and load encroachment function • Synchrocheck Communications • Networking interfaces – 100Mbit Fiber Optic Ethernet, RS485, RS232, RS422, G.703, C37.94 • Multiple Protocols - IEC 61850, DNP 3.0 Level 2, Modbus RTU, Modbus TCP/IP, IEC 60870-5-104, Ethernet Global Data (EGD) • Direct I/O – secure, high-speed exchange of data between URs for Direct Transfer Trip applications • Embedded Managed Ethernet Switch with 4 - 100 Mbit Fiber optic ports and 2 copper ports FEATURES FEATURES APPLICATIONS KEY BENEFITS EnerVista™ Software • Graphical Logic Designer and Logic Monitor to simplify designing and testing procedures • Document and software archiving toolset to ensure reference material and device utilities are up-to-date • EnerVista™ Integrator providing easy integration of data in the T60 into new or existing monitoring and control systems • Robust communications with up to 8 HardFiber Bricks • Seamless integration with existing T60 functions • Redundant architecture for dependability and security IEC 61850 Process Bus Interface T60 TRANSFORMER PROTECTION SYSTEM Fully featured, multiple winding transformer protection Multilin™
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TRANSFORMER PROTECTION SYSTEM - BELMET · Transformer Protection. g. Digital Energy • ... differential restraint characteristic with inrush and overexcitation inhibits. The maximum
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Protection and ControlTheT60TransformerProtectionSystemisacomprehensivethree-phasetransformerrelay designed to protect medium andlarge power transformers. The T60provides automatic or user definablemagnitudereferencewindingselectionforCTratiomatching,andperformsautomaticphaseshiftcompensationforalltypesoftransformer winding connections. TheT60algorithmallows the user to enableremovalofthezero-sequencecurrentevenfordeltaconnectedtransformerwindings,facilitatingtransformerswithavarietyofgroundingconfigurations.
The T60 provides enhanced security byincludingbothrestrainedandunrestrained(instantaneous)differentialprotection.ThePercentDifferentialelementisbasedonaconfigurabledual-breakpoint/dualslopedifferential restraint characteristic withinrush and overexcitation inhibits. Themaximumwinding current is used as arestrainingsignalforbetterthroughfaultstabilityunderCTsaturationconditions.
The percent characteristic allows theelement to account for bothDC andACsaturationofthecurrenttransformers
Inrush Inhibit
The 2nd harmonic inhibit function isselectable inorder tocoverenergization
Volts Per HertzPhase UndervoltageAuxiliary UndervoltageInstantaneous Differential OvercurrentGround Instantaneous OvercurrentNeutral Instantaneous OvercurrentPhase Instantaneous OvercurrentGround Time OvercurrentNeutral Time OvercurrentPhase Time OvercurrentNeutral OvervoltagePhase OvervoltageAuxiliary OvervoltageNeutral Directional OvercurrentPhase Directional OvercurrentOverfrequencyUnderfrequencyRestricted Ground FaultTransformer Differential
FUNCTION
Functional Block Diagram
ofdifferenttypetransformers,canbesettoeithertraditionaloradaptivemode.Theadaptivemodemaximizesdependabilityon internal faults and ensures securityduring inrush conditions even withweak second harmonics. It reduces thesensitivity ofmagnitude comparison bybiasingtowardssecuritybasedonangularrelationship.Dependability ismaintainedby applying the restraint signal onlyfor a period of time dependent on themagnituderatio.
Overexcitation Inhibit
An increase in transformer voltage ordecreaseinsystemfrequencymayresultinoverexcitationof the transformer. It isoften desirable to prevent operation of
thepercentdifferentialelement in thesecases therefore a fifth harmonic inhibitis integrated intothepercentdifferentialelement to cater for overexcitationconditionsresultingfromanincreasedV/Hzratio.
Unrestrained Differential
An unrestrained differential element isprovidedforfasttrippingonheavyinternalfaultstolimitcatastrophicdamagetothetransformer and minimize risks to theremainderofthepowersystem.
Restricted Ground Fault (RGF)
RGF (also known as zero sequencedifferential)extendsprotectioncoverageto the neutral point of wye-connected
The T60 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.
ANSIDeviceNumbers&Functions
T60 - Protection, Metering, Monitoring and Control
IEC 61850 Process BusThe IEC 61850 Process Bus module isdesigned to interface with the MultilinHardFiberSystem,allowingbi-directionalIEC 61850 fiber optic communications.The HardFiber System is designed tointegrate seamlessly with the existingUniversal Relay applications, includingprotection functions, FlexLogic,meteringandcommunications.
Advanced AutomationTheT60incorporatesadvancedautomationfeatures including powerful FlexLogic™programmablelogic,communication,and
windings where fault currents maybe below the pickup of the maintransformer differential elements.The low-impedance RGF protectionprovided in the T60 uses an optimizedadaptive restraint signal that providessecurity for external fault conditionsthatmay cause CT saturationwhile stillmaintainingsensitivityforinternalfaults.
Distance
Separate high-speed phase and grounddistanceelementsareprovidedinT60asaback-upprotection.T60comeswiththreephaseandgrounddistancequadandmhodistance elements. The phase distanceelements come with built-in in-zonetransformercompensation. TheT60alsoprovides a load encroachment element,which supervises the distance elementsunderheavyresistiveloadingconditions.
Overcurrent Functions
T60provides thermaloverload, timeandinstantaneous overcurrent elements forphase,neutral,ground,phaseandneutraldirectional.Allofthemcanruninparallelwith primary differential protection orcan be programmed to provide primaryprotection under conditions when otherprotectionselementsareblocked.
User-Definable Protection Functions
Sixteenuser-definableprotectionfunctions(FlexElements™) can be programmed torespond to any quantity measured orcomputed by the relay (phase, groundand sequence currents and voltages,power, frequency, power factor, etc.)These elements respond to variations in
FlexLogic™ is the powerful UR-platformprogramming logicengine thatprovidesthe ability of creating customizedprotectionandcontrol schemes therebyminimizingtheneed,andtheassociatedcosts, of auxiliary components andwiring.Using FlexLogic™, the T60 can beprogrammedtoproviderequiredtrippinglogic along with custom scheme logicfor line phase comparison (includinginterlockingwithexternalsynchronizers),transfer tripping schemes for remotebreakers and dynamic setting groupchanges.
Faults close to the neutral point of a wye-connected winding does not generate adequate fault current for differential element to pick up. Restricted Ground Fault protection provides sensitive ground fault detection for low-magnitude fault currents.
Differential vs. Restraint Characteristic (ld vs.lr)
The settings for the dual-slope, dual-breakpoint characteristic provides higher flexibility for shaping up the characteristic and achieve better sensitivity and security.
Transition Region
Break Point 2
Slope1Break 1
Differential Current (Id)
Restraint Current (Ir)
Slope 2
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Monitoring and MeteringTheT60includeshighaccuracymeteringandrecording forallACsignals.Voltage,current,andpowermeteringarebuiltintothe relayasa standard feature.Currentandvoltageparameters are availableas total RMS magnitude, and asfundamental frequency magnitude andangle.Also,harmonicmeasurements forvoltageandcurrentupto25thforpowerqualityapplications.T60canmonitor,calculateandloghottest-spottemperature,agingfactorandlostoflife data over a long period. These data
combinedwitheconomicanalysis,allowscriteria to be developed regarding thebest time at which to replace a powertransformer due to load growth, i.e. tominimize the cost without significantlyincreasingtherisk.
Fault and Disturbance Recording
The advanced disturbance and eventrecording features within the T60 cansignificantly reduce the timeneeded forpostmortem analysis of power systemeventsandcreationofregulatoryreports.Recordingfunctionsinclude:
The very high sampling rates and largeamount of storage space available fordata recording in the T60 can eliminatetheneed for installingcostlystandalonerecordingequipment.
Temperature Monitoring – RTD Module Option 5C
The T60 RTD option provides 8programmable RTD inputs per modulethatareusedfortemperaturemonitoring.EachRTD inputhas2operational levels:alarm and trip. The T60 supports RTDtripvotingandprovidesopenRTDfailurealarming. Alternatively, a remote RTDmodule “RRTD”, which supports 12 RTDinputs, can also be used with the T60for temperature monitoring. The RRTDprovidescostsavingswhencomparedtotraditionalRTDwiring.
Advanced Device Health Diagnostics
TheT60performscomprehensivedevicehealth 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.
Flexlogic™ allows for customizing the T60 to operate and control the breakers and other auxiliary devices needed to fit most generator protection schemes and applications.
TheT60hasadvancefunctionsthatriseanalarmortriptheschemewhenaninternalcondition inthepowertransformer,suchas temperature or insulation aging, orbreakersthatcouldleadtoafault .Theseelementsare:
Theseelementsallowtousertooptimizemaintenance routines on the powertransformerandbreakers.
CommunicationsThe T60 provides advanced commun-ications technologies for remote dataand engineering access, making it themost advancedand flexible transformerprotectionrelaytouseandintegrateintonew and existing infrastructures. Directsupport for fiberoptic Ethernetprovideshigh-bandwidthcommunicationsallowingfor low-latency controls andhigh-speedfiletransfersofrelayfaultandeventrecordinformation. The available redundantEthernet option and the embeddedmanaged Ethernet switch providethe means of creating fault tolerantcommunicationarchitectures inaneasy,cost-effectivemannerwithouttheneedforintermediarycommunicationhardware.
UsetheT60withintegratedIEC61850tolower costs associated with substationprotection, control and automation. GEEnergy’s leadership in IEC 61850 comesfrom thousandsof installeddevicesandfollows on seven years of developmentexperiencewithUCA2.0.
DirectI/Oallowsforsharingofhigh-speeddigital information betweenmultiple URrelaysviadirectback-to-backconnectionsor multiplexed through a standard DS0multiplexerchannelbank. Regardlessoftheconnectionmethod,DirectI/Oprovidescontinuousreal-timechannelmonitoringthat suppliesdiagnostics informationonchannelhealth.
Analyze transformer faults using both analog and digital power system quantities that are measured and recorded up to a rate of 64 samples per cycle.
Record the operation of the internal T60 elements and external connected devices with 1ms time-stamped accuracy to identify the Sequence of Operation of station devices during transformer faults and disturbances.
Power System Troubleshooting
Visualization of differential characteristics allows to verify settings and trouble shoot operations.
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DirectI/Oprovidessuperiorrelay-to-relaycommunications that can be used inadvancedinterlocking,generationrejectionandotherspecialprotectionschemes.
TheT60supportsEnglish,French,Russian,andChineselanguagesonthefrontpanel,EnerVista™ setup software, andproductmanual. Easily switch between Englishandanadditional languageon the localdisplayswithoutuploadingnewfirmware.
EnerVistaTM SoftwareThe EnerVista™ Suite is an industry-leading set of software programs thatsimplifies every aspect of using the T60relay. The EnerVista™ suite provides allthe tools to monitor the status of thetransformer, maintain the relay, andintegrateinformationmeasuredbytheT60into DCS or SCADAmonitoring systems.Convenient COMTRADE and Sequenceof Events viewers are an integral partof the UR Setup software included witheveryURrelay,tocarryoutpostmortemeventanalysistoensureproperprotectionsystemoperation.
EnerVista™ Launchpad
EnerVista™ Launchpad is a powerfulsoftwarepackagethatprovidesuserswithallofthesetupandsupporttoolsneededfor configuring andmaintaining Multilinproducts. The setup software withinLaunchpad allows configuring devicesin real-time by communicating usingserial,Ethernet,ormodemconnections,orofflinebycreatingsettingfilestobesenttodevicesatalatertime.Included in Launchpad is a documentarchiving and management systemthat ensures critical documentation isup-to-date and available when needed.Documentsmadeavailableinclude:
• Manuals
• ApplicationNotes&supportdocuments
• GuideformSpecifications
• Brochures
• WiringDiagrams
• FAQ’s
• ServiceBulletins
Viewpoint Monitoring
Viewpoint Monitoring is a simple-to-useand full-featured monitoring and datarecording software package for smallsystems.ViewpointMonitoringprovidesacompleteHMIpackagewiththefollowingfunctionality:
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 intonewor existingautomationsystems. Included in EnerVista™Integrator:
• OPC/DDEServer
• MultilinDrivers
• AutomaticEventRetrieval
• AutomaticWaveformRetrieval
User InterfaceThe T60 front panel provides extensivelocalHMI capabilities. The local displayisusedformonitoring,statusmessaging,faultdiagnosis,anddeviceconfiguration.Userconfigurablemessagesthatcombinetextwithlivedata,canbedisplayedwhenuser-definedconditionsaremet.
LEDIndicators
Multi-LanguageDisplay• English• Russian• French• Chinese
UserProgrammablePushbuttons
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Typical Wiring
T60T60-H03-HLH-F8L-H6H-M8N-P6C-U6D
TC
TC
2
1
3
I
V
15 26 4
6H
I
V
I
V
I
V
I
V
I
V
H8a
H7b
H7a
H8c
H7c
SUR
GE
H8b
CRITIC
AL
FAILU
RE
OU
TPUT
CO
NTR
OL
POW
ERH
I
MED
LO
1
FILTERSU
RG
E
B5a
B3a
B1b
B8a
B6b
B8b
B6a
B3b
B1a
B2b
B5b
minim
um
DC
7c
8c
8b
8a
5c
5a
5b
7b
3c
4b
4a
4c
1c
6a
2b
7a
2a
6b
6c
2c
1a
1b
3a
3b
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
AA BB CC
6C
P1
P5
P2
P6
P3
P7
P4
P8
P7a
P1a
P2b
P7c
P1c
P7b
P1b
P8cP8b
P2c
P8a
P2a
P4a
P5b
P4c
P6b
P3bP3a
P6a
P4b
P5c
P5a
P3c
P6c
1
Power
supply
8
CT/V
T
6Inputs/outputs
*
6CT
6Inputs/outputs
*
6
Inputs/outputs
9
CPU
JU
MX
LW
KV
BH
TD
NG
FP
SR
PRO
VIDED
U6a
U8a
U5b
U7b
U5a
U7a
U6c
U8c
U5c
U7c
SURGE
U1a
U8b
U4c
U2c
U3aU3c
U1c
U3b
U1b
U4a
U2a
6D
T60C
OM
PUTER
11
83220764522
CO
NN
ECTO
R
PERSON
AL
CO
MPU
TER
CO
NN
ECTO
R
22
33
44
55
66
77
88
99
TXDRXD
RXDTXD
SGN
DSG
ND
RS-232
DB
-9
(front)
F1c
F4a
F8c
F8a
F3c
F5a
F5c
F7c
F6a
F7a
F6c
F2c
VX
VA
VB
VC
F4c
F1a
F4b
F1b
F2a
F3a
F2b
F3b
VX
VA
VB
VC
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
ABC
F5a
F5c
F7c
F6a
F7a
F6c
VA
VB
VC
VA
VB
VC
GE Digital EnergyMultilin
H3b
H3a
H2c
H3c
H1b
H2b
H4b
H5b
H6b
H1a
H2a
H4a
H5a
H6a
H1c
H4c
H5c
H6c
com
10BaseFL
10BaseFL
10BaseT
D1a
D2a
D4b
D3a
D4a
IRIG-B
Input
IRIG-B
Output
CO
M1
RS485
ALTERN
ATE
NO
RMA
L
Tx2Rx2
Tx1Rx1
BN
C
BN
C
FibreO
ptic*
Remote
Device
Shielded
Co-axial
Co-axial
com
10BaseFL
10BaseFL
10BaseT
D1a
D2a
D4b
D3a
D4a
IRIG-B
Input
IRIG-B
Output
CO
M1
RS485
ALTERN
ATE
NO
RMA
L
Tx2Rx2
Tx1Rx1
BN
C
BN
C
FibreO
ptic*
Remote
Device
Shielded
Co-axial
Co-axial
Thisdiagram isbasedon the followingordercode:T60-H03-HLH-F8L-H6H-M8N-P6C-U6DThisdiagramprovidesanexampleofhowthedeviceis wired, not specifically how to wire the device.PleaserefertotheInstructionManualforadditionaldetailson
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T60 - * 00 - H * * - F ** - H ** - M ** -P ** - U ** - W/X ** For Full Sized Horizontal MountBaseUnit T60 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,ManagedEthernetSwitchSoftwareOptions 00 NoSoftwareOptions 01 EthernetGlobalData(EGD) 03 IEC61850 04 EthernetGlobalData(EGD)+IEC61850 10 Synchrocheck 11 Synchrocheck+IEC61850 20 5windings(NoBreakerFailure) 21 5windings(NoBreakerFailure)+EGD 22 5windings(NoBreakerFailure)+IEC61850 23 5windings(NoBreakerFailure)+EGD+IEC61850Mount/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 8M 8M SensitiveGround4CT/4VTw/enhanceddiagnostics 8N 8N Standard8CTw/enhanceddiagnostics 8R 8R SensitiveGround8CTw/enhanceddiagnosticsIEC61850ProcessBus 81 8PortIEC61850ProcessBusModuleDigitalI/O XX XX XX XX XX XX NoModule 4A 4A 4A 4A 4A 4A 4SolidState(NoMonitoring)MOSFETOutputs 4C 4C 4C 4C 4C 4C 4SolidState(Currentw/optVoltage)MOSFETOutputs 4D 4D 4D 4D 4D 4D 16DigitalInputswithAuto-Burnish 4L 4L 4L 4L 4L 4L 14Form-A(NoMonitoring)LatchableOutputs 67 67 67 67 67 67 8Form-A(NoMonitoring)Outputs 6C 6C 6C 6C 6C 6C 8Form-COutputs 6D 6D 6D 6D 6D 6D 16DigitalInputs 6E 6E 6E 6E 6E 6E 4Form-COutputs,8DigitalInputs 6F 6F 6F 6F 6F 6F 8FastForm-COutputs 6K 6K 6K 6K 6K 6K 4Form-C&4FastForm-COutputs 6L 6L 6L 6L 6L 6L 2Form-A(Currentw/optVoltage)&2Form-COutputs,8DigitalInputs 6M 6M 6M 6M 6M 6M 2Form-A(Currentw/optVoltage)&4Form-COutputs,4DigitalInputs 6N 6N 6N 6N 6N 6N 4Form-A(Currentw/optVoltage)Outputs,8DigitalInputs 6P 6P 6P 6P 6P 6P 6Form-A(Currentw/optVoltage)Outputs,4DigitalInputs 6R 6R 6R 6R 6R 6R 2Form-A(NoMonitoring)&2Form-COutputs,8DigitalInputs 6S 6S 6S 6S 6S 6S 2Form-A(NoMonitoring)&4Form-COutputs,4DigitalInputs 6T 6T 6T 6T 6T 6T 4Form-A(NoMonitoring)Outputs,8DigitalInputs 6U 6U 6U 6U 6U 6U 6Form-A(NoMonitoring)Outputs,4DigitalInputs 6V 6V 6V 6V 6V 6V 2Form-A(Curw/optVolt)1Form-COutput,2LatchingOutputs,8DigitalInputsTransducerI/O 5A 5A 5A 5A 5A 5A 4dcmAInputs,4dcmAOutputs 5C 5C 5C 5C 5C 5C 8RTDInputs 5E 5E 5E 5E 5E 5E 4dcmAInputs,4RTDInputs 5F 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 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)