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Multilin 850 - Feeder Protection SystemRobust Security FeaturesA suite of powerful system security features are designed into the 850,enabling a high level of cyber security protection, helping operators tocomply with NERC /CIP guidelines and regulations. This includes AAAserver support (Radius/LDAP), permitting authentication and accountingof all user activities, and RBAC, which provides efficient administration ofusers and roles within devices.Advanced Asset ManagementBy leveraging GE’s global research facilities located around the world,the 850 Feeder Protection Relay has integrated a number of advancedalgorithms which allow for detailed diagnostic information to beprovided as required. This allows users to make informed decisionsbased on real operational data.Environmental Monitoringtemperature, humidity, voltage surges and vibration that the relay isexposed to and provides a user the necessary information to makedecisions based on the operating environment, enabling proactivedecisions prior to any system issues that may arise. In addition, the 850performs comprehensive device health diagnostic tests at startup andcontinuously during run-time to test its own major functions and criticalhardware.Built into the relay as a standard feature, the 850 includes highaccuracy metering and recording for all AC permitting. current, voltage,and power metering. Current and voltage parameters are availableas total RMS magnitude, and as fundamental frequency magnitudeand angle. The 850 also measures up to the 25th harmonic and totalharmonic distortion (THD) on voltage and current, suitable for powerquality applications.The 850 Feeder Protection System implements a patentedEnvironmental Monitoring system that measures and providesoperating condition information. The 850 continuously monitors theMonitoring system performance with oscillography and event records.Designed for Ease-of-UseContinuing its legacy in providing easy-to-use protective relay solutions, the 850 is designed to minimize product and system configurabilityrequirements, for quicker physical installations, easier and simplified setup and configuration.6GEDigitalEnergy.com

Multilin 850 - Feeder Protection SystemSimplified Setup and On-Going MaintenanceThe robust 850 streamlines user workflow processes and simplifies engineering tasks, such as configuration, wiring, testing, commissioning, andmaintenance. Building on the history of simplified setup and configuration, the 850 Feeder Protection Relay has implemented simplified setup screensto assist in minimizing relay setup time. In addition, for local programming, the 850 comes with a fully functional GCP, which allows users to locallymonitor the asset.1Easy to Use - Draw-out case2Easy to Configure - 1 simple step3Detailed DiagnosticsSoftware and ConfigurationThe EnerVista suite is an industry-leading set of software programs that simplifies every aspect of using the Multilin 850. EnerVista provides all thetools to monitor the status of the protected asset, maintain the device and integrate the information measured by the Multilin 8 Series, into SCADA orDCS process control systems. The ability to easily view sequence of events is an integral part of the setup software, as postmortem event analysis iscritical to proper system management.EnerVista LaunchpadThe setup tools within Launchpad allow for the configuration of devices in real-time, by communicating via serial, Ethernet or modem connections, oroffline, by creating device setting files to be sent to devices at a later time.8 Series Setup SoftwareEnerVista setup software can reduce device setup and configuration time.Single Click DeviceCommunicationsQuick Link DiagnosticInformationOnline Device Configurationand MonitoringMenu Driven DeviceConfigurationOffline Device Setting FileConfigurationGEDigitalEnergy.com7

Multilin 850 - Feeder Protection SystemExtensive Communications OptionsThe 850 provides advanced communications technologies for remotedata and engineering access, making it easy and flexible to use andintegrate into new and existing infrastructures. Direct support for fiberoptic Ethernet provides high-bandwidth communications, allowing forlow-latency controls and high-speed file transfers of relay fault and eventrecord information. The 850 also supports two independent IP addresses,providing high flexibility for the most challenging of communicationnetworks.D400D4000300CHMLWITS000ML3 ITCHSWLOCAL AREA NETWORKLOCAL AREA NETWORKAProviding several Ethernet and serial port options and supporting thewidest range of industry standard protocols, the 850 enables easy, directintegration into DCS and SCADA systems. The 850 supports the followingprotocols:000ML3 ITCHSWB000ML3 ITCHSW000ML3 ITCHSW000ML3 ITCHSW IEC 61850, IEC 62439 / PRP DNP 3.0, IEC 60870-5-103, IEC 60870-5-104 Modbus RTU, Modbus TCP/IP750 FEEDER PROTECTION SYSTEM850 FEEDER PROTECTION SYSTEMDesigned to Support Multiple ApplicationsIndustrial and distribution utility electrical systems have become more complex, requiring protection relays to deliver faster detection and operation,while providing instantaneous, remote access to critical asset information. In addition, as conditions and power requirements change within the facility,the protection device must be able to seamlessly adapt to and integrate within the network. With a suite of intelligent devices that range from feeder tomotor to transformer and generator protection, the Multilin 8 Series platform has been designed to solve the challenges industries face in running theirday-to-day operations, including maximizing system and process uptime, simplifying system integration and ongoing maintenance, and extending thelife of critical assets.GE’s 850 Feeder Protection Relay can be used to support numerous applications and functions, including feeder protection, bus blocking/interlockingschemes, auto transfer schemes, load shedding applications, auto-reclose applications, customer-utility interconnections, and distributed generationapplications. The 850 incorporates advanced automation features, including powerful programmable logic, communications, and SCADA capabilities,that allow for advanced and flexible programming, and easy integration into new and existing communication architectures. In addition, the 850integrates seamlessly with other GE Multilin relays for complete system protection.Application Challenge: Intelligent Load SheddingApplication Challenge: Modern Feeder ProtectionChallenge:Challenge:In a multiple power source network, it may happen that some power sourcesare lost utility circuit creating deficit of the power even with a presence ofin-facility generator. In these partially islanding situations the deficit ofactive power may result in a sudden drop of system frequency resultingin power system instability, bring the processes and operations to a halt.Industrial facilities depend on reliable and secure electricity servicesto keep their operations running. Regardless if the facility is supplieddirectly from a utility source and/or supported by on-site generation(co-generation), a fully integrated protection & control scheme is criticalto maintaining uninterrupted power to the entire facility.Solution:Solution:Being able to dynamically balance and maintain loads in this type ofseparation scenario requires an intelligent device that has advancedcommunications, automation and control logic capabilities. The Multilin850 provides distribution networks and industrial facilities with the systemstability functionality and cost saving options, required to maintainpower system availability and process continuity. With and advancedprotection features including underfrequency, overfrequency, frequencyrate of change, sensitive reverse power, underfrequency restoration andother elements plus superior communications enabling sharing data withother IEDs, distribution utilities and industrial facilities rely on GE 850 todeliver power system reliability, efficiency and security required.8The Multilin 8 Series offers the ideal solution for protecting, monitoringand controlling electrical cables and overhead lines from disturbancesor faults. With a fast protection pass, running every 2 msec, the 8Series provides unmatched overcurrent , overvoltage, undervoltage,and frequency protection. Supporting the latest in industry standardcommunication protocols, including IEC 62439/PRP and IEC 61850, theMultilin 8 Series easily integrates into new or existing networks.GEDigitalEnergy.com

Multilin 850 - Feeder Protection SystemTechnical Application Example 1: Industrial Auto Transfer SchemesChallengeBus or source transfer solutions are often necessary for industrial facilitiesto ensure power reliability and process continuity. Being able to rapidlytransfer sources was often accomplished through a complex combinationof discrete and auxiliary relays, timers, and/or programmable logiccontrollers, all wired together. The usage of these independent devicesrequired a precise sequencing of interlocks, timing, and functions to ensureno momentary loss of power could potentially damage critical equipmentor loads. In addition, the large number of physical I/O required made theseschemes expensive to design and implement and difficult to test.FIBER/COPPERCB2CB1850850850SolutionThe Multilin 850 offers seamless automated bus transfer schemesolutions, maximizing system availability and process uptime. Using aminimal amount of programming, the 850 eliminates the need for anydiscrete devices and device inter-wiring by integrating all the functionsdirectly into the intelligent device. With advanced communicationsincluding embedded support for IEC 61850 peer-to-peer communications,inter-relay wiring and physical I/O can be eliminated. The 850 provides areliable, automatic bus transfer solution that is easy to design, configure,and maintain.TCB1CB3CB5CB4CB6Technical Application Example 2: Zone Selective InterlockingChallengeA Fault in an industrial or utility distribution system is a catastrophic eventthat causes severe damage to equipment and often results in extendedsystem and process downtime. These events require a solution that canquickly and reliably detect and issue a coordinated trip command to clearthe fault as fast as possible, reducing total incident energy, equipmentdamage and system downtime.SolutionWith embedded support for IEC 61850, the 850 provides high-speeddata exchange between relays for fast reaction to system issues. As acoordinated system, interlocked protection can be enabled, to providethe necessary bus protection. Fast clearance can be achieved for a faultthat occurs at any feeder or bus location by quickly exchanging signals todiscriminate the fault location.GEDigitalEnergy.comFiber LAN, singleor redundant, foradded securitySourceCB1Fault 1CB2CB3Fault 29

Multilin 850 - Feeder Protection SystemTechnical Application Example 3: Intelligent Auto-RecloseChallengeA majority of faults that occur on overhead lines are transient in nature,meaning that the fault does not recur when the line is re-energized aftertripping. However, in the event the fault is still is present after the 1streclose attempt, there is a good possibility that next reclose attemptswill be successful and power supply to the customer will be restored.Therefore, in order to maintain system availability and security, utilityoperators need an intelligent auto-reclose solution that allows them toautomatically attempt to re-energize a line multiple times, dependingon the system conditions and user requirements. Today’s environmentrequires integrated solutions into digital relays.In a modern distribution feeder topology, substation relay auto-reclosefunctions should maintain coordination with downstream reclosuresinstalled along the feeder.SolutionFor customers wanting a reliable and customized auto-reclose scheme,a device with integrated logic capabilities is necessary. The 850 offerscomprehensive protection and auto-reclose functions integrated in one box.The number of shots can be reduced by high currents. Maximum rateper hour reclose shots would prevent breaker drive and insulationoverstressing.Up to four auto-reclose operations are possible, each with a programmabledead time. For each reclose shot, the relay can be programmed to blockIOC elements, and to adjust the curve characteristics of any TOC element.850 relay can be programmed to change protection setting every time thedownstream reclosure operates and also maintain same reclosure countas downstream reclosure.Technical Application Example 4: Adaptive ProtectionChallenge:To effectively manage an electrical distribution system, operators needthe ability and flexibility to change power output on a seasonally or evenhourly basis due to scheduled maintenance, seasonal load changes andtransfers, scheduled switching, transformer inrush or motor startingcurrents. These distribution changes could have an adverse effect on thereliability of the system and connected loads and requires a protectiondevice that can adapt to ensure secure and dependable protection.One such application where dynamic setting group change ability isideal, is with a parallel feeder application where two lines are in serviceand carry a portion of the required load. If there is an unplanned outagewith one of the feeder lines, such that all loads are now supplied by onefeeder, key protection settings would need to be adjusted to ensure propercoordination with downstream devices and deliver secure reliable service.S850 Feeder Relay52525252Solution:52The Multilin 850 offers effective, reliable management of distributionfeeders. With dynamic, sensitive settings, the 850 provides secure anddependable protection. With six setting groups the 850 provides thesensitive settings range and groups required to ensure no compromiseis made to meet changing system conditions. These setting groups canbe enabled automatically or manually to address system needs, ensuringgreater system reliability and efficiency.5210GEDigitalEnergy.com

Multilin 850 - Feeder Protection SystemFunctional Block DiagramBUSANSI Device27PV 259 222V 059N59PVTFF81U481O81R23 CTs50BF250G/50G51G51GCT67P50P51PCLP51 250 2 67 T RECORDEREVENT RECORDERFAULT REPORT5279TRIPCLOSEMONITORING2527XSynchrocheck27P (2)Phase Undervoltage32 (2)Directional Power32NWattmetric Ground Fault (Wattmetric zero sequence directional)27X (2)Auxiliary Undervoltage49Cable Thermal Model50BFBreaker Failure50GGround Ground Instantaneous Overcurrent50SGSensitive Ground Instantaneous Overcurrent50N (2)Neutral Instantaneous Overcurrent50P (2)Phase Instantaneous Overcurrent50 2Negative Sequence Instantaneous Overcurrent51GGround Time Overcurrent51SGSensitive Ground Time Overcurrent51N (2)Neutral Time Overcurrent51P (2)Phase Time Overcurrent51 250G/ 67SG51SG 50SG51G850Feeder Protection System59X2892770A1.CDRLOADDescription25Negative Sequence Time Overcurrent52AC Circuit Breaker59NNeutral Overvoltage59P (2)Phase Overvoltage59XAuxiliary Overvoltage59 2Negative Sequence Overvoltage67GGround Directional Element67SGSensitive Ground Directional Element67NNeutral Directional Element67PPhase Directional Element67 2Negative Sequence Directional Element79Automatic Recloser81OOverfrequency81U (4)Underfrequency81RFrequency Rate of Change87GRestricted Ground FaultI2/I1Broken ConductorVTFFVoltage Transformer Fuse FailureDimensions & GEDigitalEnergy.com11

Multilin 850 - Feeder Protection SystemTypical WiringLOAD52WYE VTCONNECTIONSEE VT WIRING ININSTRUCTION MANUALCONTROLPOWERSEE GROUNDINPUT WIRING ININSTRUCTION MANUALGROUNDCURRENT INPUTSVOLTAGE INPUTSCTs and VTs are part of the chassisDIGITAL INPUT 6F19F20DIGITAL INPUT 7G1G2CONTACT INPUT 1CONTACT INPUT 6G7G8CONTACT INPUT 7[BACK PANEL ETHERNET PORT RJ45 OR ST]CONTACT INPUT 8CONTACT INPUT 9CONTACT INPUT 10CONTACT INPUT 11G13CONTACT INPUT 12CONTACT INPUT 13G14CONTACT INPUT 14G15CONTACT INPUT 15G16CONTACT INPUT 16RESERVEDRESERVEDG22G23G24850 Feeder ProtectionSystemRESERVEDRESERVEDRESERVED- CONTACT COM- DC 24USBRear PanelETHERNETRJ45ETHERNETFIBER1FIBER2STSTSLOT E: COMMUNICATIONSCLOSECOILGROUNDBUSSEE TRIP ANDCLOSE COILMONITORINGCLOSECIRCUIT IN T F (G, H): I/O A52bTRIPCIRCUITF9AUXILIARYRESERVED[FRONT PANEL LOCALPROGRAMMING PORT]F652aTRIPCOILF10CONTACT INPUT 3G5G20G21VAUXILIARYF1F2F3F4F5CLOSECONTACT INPUT 2G6G18G19VCOMMONCONTACT INPUT 4CONTACT INPUT 5G17TRIPOUTPUT RELAYSF17G11G12ETHERNETDIGITAL INPUT 3F18G9G10PERSONALCOMPUTERDIGITAL INPUT 2DIGITAL INPUT 4DIGITAL INPUT 5G3G4GNDSTUDSLOTS J&KDIGITAL INPUTSF15F16PWR SUPPLYDIGITAL INPUT 1SLOT G (H) : I/O D – 16 DIGITAL INPUTSF13F14GROUNDPHASE A PHASE B PHASE CA1 A2 A3LINEVA VA VB VB VC VC VX VXNNEUTRALJ9 J10 J11 J12 J13 J14 J15 J16IC N IG N Isg NIA IA NSLOT AJ1 J2 J3 J4 J5 J6 J7 J8 K7 K8SLOT H (F, G) : I/O R – 8 OUTPUT RELAYSBUSF22F23OUTPUT CONTACTSSHOWN WITH NOCONTROL LCOMPUTERFront PanelUSBTYPE BCOMMUNICATIONS RESERVEDCANOPEN DELTA VT CONNECTIONRS485COMIRIG-BWIFIE E E E E E E E E E1 2 3 4 5 6 7 8 9 10J9 J10 J11 J12 J13 J1412GEDigitalEnergy.com

Multilin 850 - Feeder Protection SystemTechnical SpecificationsPOWER SUPPLYPower SupplyNominal DC Voltage125 to 250 VMinimum DC Voltage84 VMaximum DCVoltage300 VNominal AC VoltageBreak (DC resistive)24 V / 10 A 48 V / 6 A 125 V / 0.5 A 250V / 0.3 ABreak (AC inductive)720 VA @ 250 VAC Pilot duty A300Break (AC resistive)277 VAC / 10 ACONTACT INPUTSPhase Undervoltage (27P)Voltage:Fundamental Phasor MagnitudeMinimum Voltage:0.00 to 1.50 x VT in steps of 0.01 x VTPickup Level:0.00 to 1.50 x VT in steps of 0.01 x VTDropout Level:102 to 103% of pickupLevel Accuracy: 0.5% of reading from 10 to 208 VAny one, Any two, All threeNumber of Inputs:Based on relay ordering100 to 240 V at 50/60 HzTypeWet or DryMinimum AC Voltage60 V at 50/60 HzWet Contacts300 V DC maximumPhases Required forOperation:Maximum AC Voltage265 V at 50 to 60 HzSelectable thresholds17, 33, 84, 166 VDCUndervoltage CurvesDefinite Time or Inverse TimeVoltage loss ridethrough20 ms durationTolerance 10%Pickup Time Delay0.000 to 6000.000 s in steps of 0.001sRecognition time 1/8 cycleOperate TimeDebounce time0.0 to 16.0 ms in steps of 0.5 msContinuous currentdraw2 mA 16 ms at 0.90 x pickup (from 1.1 xpickup) at 60 Hz 20 ms at 0.90 xpickup (from 1.1 x pickup) at 50 HzCurve TimingAccuracyat 0.90 x pickup: 3.5% of curvedelay or ½ cycle (whichever i

Available as part of the Multilin 8 Series platform, the Multilin 850 . Feeder Protection System provides comprehensive, high-performance protection and control for distribution feeder applications. For main-tie-main configurations, the Multilin 850 delivers a more economical and reliable solution, enabling customers to reduce hardware