KEY BENEFITS FEATURES. Protection and Control. Monitoring and Metering. User Interface

Transcription

1 Unique built-in control features - Comprehensive feeder protection plus automatic Transfer Scheme, Under Voltage and Under Frequency auto-restore Best in class man machine interface (MMI) - Large backlit display with 40 characters to view relay information and settings in direct sunlight, full numerical keypad, and setpoint navigation keys. ccurate metering under sever system disturbances - Tracks power system frequency and adjusts sampling rate accordingly Improve uptime of auxiliary equipment - Through I/O monitoring Reduce troubleshooting time and maintenance costs - IRIG- B time synchronization, event reports, waveform capture, data logger KEY BENEFITS PPLICTIONS Management and primary protection of distribution feeders Management and backup protection of busses, transformers and power lines FETURES Minimize replacement time - Draw-out construction Simplify testing - Built in simulation features Cost Effective ccess information - Via Modbus RTU and DNP 3.0 Level 2 protocols, through standard RS232, RS45 & RS422 serial ports, and optional Modbus RTU over TCP/IP through embedded Ethernet Port to connect to 10MB Ethernet local or wide area networks. Complete asset monitoring - nalog I/O, Full metering including demand & energy Follow technology evolution - Flash memory for product field upgrade Long lasting life - When exposed to chemically corrosive and humid environments with optional conformal coating Reliable Distributed Generation interconnection protection system. Protection and Monitoring and Metering Complete time, instantaneous & directional phase, neutral, Fault locator, record of last 10 ground and negative sequence overcurrent Breaker operation & trip failure Time, instantaneous & directional sensitive ground overcurrent VT Failure Voltage restraint overcurrent Power factor - two independent stages Bus phase and line auxiliary undervoltage nalog input - level and rate Bus phase overvoltage Total breaker arcing current Neutral overvoltage Event recorder Negative sequence voltage Oscillography and Data Logger Undervoltage automatic restoration Metering: V I Hz W var V PF Bus underfrequency Demand: Ia, Ib, Ic, MW, Mvar, MV Underfrequency automatic restoration User Interface utomatic bus transfer Front Panel LEDs, full key pad, and backlit LCD display Breaker failure RS232, RS45 and RS422 ports - up to 19,200 bps Manual close control Ethernet port -10Mbs Cold load pickup control Multiple protocols - ModBus RTU, ModBus RTU TCP/IP, Power factor control DNP 3.0 Level 2 4 shot recloser Includes EnerVista software 4 setting groups Syncrocheck - V, f, Hz, & dead-source 20 Programmable logic inputs 162

2 750/760 SR Feeder Protection System Protection and The 750/760 Feeder Protection System is a digital relay intended for the management and primary protection and control of distribution feeders. It can also be used for management and backup protection of busses, transformers, and power lines. The 750/760 offers advanced protection that includes: Time Overcurrent The 750/760 has two phase TOC elements with level detectors for each phase. The 750/760 also has two neutral TOC elements, and one TOC element each for ground, sensitive ground, and negative sequence. Each TOC element has the following programmable characteristics: Pickup current level for trip, alarm, or control Choice of 15 curve shapes (including FlexCurves) and curve multipliers Instantaneous or linear reset time characteristic Voltage restraint NSI IEC IC Custom Curve shapes. Extremely Inverse Very Inverse Normally Inverse Moderately Inverse Definite Time Curve (BS142) Curve B (BS142) Curve C (BS142) Short Inverse Extreme Inverse Very Inverse Inverse Short Inverse FlexCurve FlexCurve B TIME Typical application of FlexCurves. Instantaneous Overcurrent The 750/760 has two phase IOC elements with level detectors for each phase. The relay also has two neutral IOC elements, and one IOC element each for ground, sensitive ground, and negative sequence. Each IOC element has a programmable pickup current, a time delay during which current must exceed the pickup for operation, and the minimum number of phases required for operation. 1 3 CURRENT 760/750 FlexCurve cdr Functional Block Diagram SOURCE N dcm : Bus VT : Trip Breaker 52 Close Line VT 1 3 Level 27 Coil Monitors 3Io I2 Rate BF 59 Breaker Operation 25 50P Level Demand OPERTING CURRENT SENSITIVE OPERTING CURRENT 50P 55 I1 50N Level 1U 1 10 Decay Phase only V 2 V 1 50G I2 51G VT Fail Current Supervision Zone Coordination 79X 760 Only 46/ / / 67 50N 750/760 SR FEEDER PROTECTION SYSTEM 51N 67N 67G 50SG 51SG 67SG 3Vo 50P 59N 51V 51P POLRIZING CURRENT* 67P 47 V2 -Vo OUTPUTS Trip Relay Close Relay 5 uxiliary Relays Self-Test Warning Relay nalog Outputs CONTROL Synchronism Check Cold Load Pickup Manual Close Undervoltage Restoration Underfrequency Restoration Transfer uto Reclose (760) MONITOR Power Factor Demand Tripping rcing Fault Locator nalog Input Overfrequency VT Failure Event Recorder Oscillograph Data Logger COMMUNICTIONS 1 x RS232 2 x RS45 OR 1 x RS422 Modbus RTU DNP x 10BaseT Ethernet DEVICE DESCRIPTION 25 Synchrocheck 27 Bus/Line Undervoltage 32 Reverse Power 46/50 Negative Sequence Inst. Overcurrent 46/51 Negative Sequence Time Overcurrent 46/67 Negative Sequence Directional Overcurrent 47 Negative Sequence Voltage 50 BF Breaker Failure 50P Phase Instantaneous Overcurrent 50N Neutral Instantaneous Overcurrent 50G Ground Instantaneous Overcurrent 50SG Sensitive Ground Instantaneous Overcurrent 51P Phase Time Overcurrent 51N Neutral Time Overcurrent 51G Ground Time Overcurrent 51SG Sensitive Ground Time Overcurrent 55 Power Factor 59 Overvoltage 59N Neutral Overvoltage 67P Phase Directional Overcurrent 67N Neutral Directional Overcurrent 67G Ground Directional Overcurrent 67SG Sensitive Ground Directional Overcurrent 1 U/O Under/Over Frequency 1 Decay Frequency Decay blkdia.cdr * POLRIZING CURRENT ND GND CURRENT RE MUTULLY EXCLUSIVE SINCE BOTH USE THE SME RELY CT INPUT TERMINLS 163

3 750/760 Feeder Protection System Bus Over, Under, Negative Sequence, and Neutral Displacement Voltage When the voltage drops below a specified voltage setting for a specified time, the undervoltage protection features can cause a trip, generate an alarm, or signal an external control system. The undervoltage elements are inhibited from operating unless voltages are above a programmed level. Overvoltage protection features can cause a trip or generate an alarm when the voltage exceeds a specified voltage setting for a specified time. The negative sequence voltage element operates as the overvoltage element on the calculated Bus negative sequence voltage (V2). The neutral displacement voltage element operates as the overvoltage element, on the calculated zero sequence voltage (3V 0 ). Zero Torque Line V an Typical Fault ngle 60 Lag I a Operating Current Maximum Torque Line NSI PROTECTION/CONTROL Bus/Line Undervoltage Negative Sequence Voltage Phase/Neutral/Gnd/Neg Seq/Sens Gnd IOC Phase/Neutral/Gnd/Neg Seq/Sens Gnd TOC Bus Overvoltage/Neutral Displacement Phase/Neutral/Neg Seq/Sens Gnd/Gnd Directional Bus Underfrequency/Rate of Change Undervoltage utomatic Restoration Underfrequency utomatic Restoration Breaker Failure with Current Superv. Bus Transfer Programmable Logic Inputs Multiple Setpoint Groups MONITORING/CONTROL Synchronism Check Phase/Neutral Current Level Power Factor utoreclose (760 only) Overfrequency Breaker Open/Close FEEDER Radial Capacitor BUS Two-ended Backup Transfer Backup TRNSFORMER LINE Backup MT set at 30 lead V bc (or V cb ) Polarizing Voltage Manual Close Feature Blocking Cold Load Pickup Feature Blocking V cn (or V bn ) REVERSE FORWRD Phase directional (for phase ). Phase Directional V bn (or V cn ) 99669H.cdr Directional overcurrent relaying protects multiple source feeders when it is essential to limit relay tripping to faults in only one direction. Fault directional control is incorporated into the relay for each phase. If directional control is enabled, overcurrent elements are blocked if current is in the non-trip direction. Neutral Directional For neutral directional sensing, the residual current of the phase CTs is used as the operating current. This unit can be voltage, current or dual polarized. The current element uses a CT in the ground return path for polarizing. The voltage element uses the calculated zero sequence voltage as the polarizing voltage. The maximum torque angle is programmable. Breaker Operation Failure Trip/Close Circuit Failure Total Breaker rcing Current VT Failure Demand (, MW, Mvar, MV) nalog Input Event Recording nalog Output Fault Locator Trip Counter Frequency Protection Over and underfrequency protection are available. Multiple Settings Groups One active group can be chosen from four groups of protection settings by using setpoint or logic input. Synchronism Check Breaker closing can be supervised by V, f and Hz setpoints. Dead-source alternatives are provided. FETUR60/50.cdr Cold Load Pickup This function allows automatic or manual blocking or raising of trip settings for a period after the breaker is closed. Current (% of normal) PICKUP OUTGE Time (seconds) LOD ENERGIZED Cold load pickup. X NORML TRIP SETTING PICKUP 1462.cdr 164

4 750/760 SR Feeder Protection System Manual Close VT Failure Fault Locator fter the breaker is closed manually, the relay can block any IOC element or raise the pickup value of any TOC element, each for a programmable time delay, after which normal operation is restored. utomatic Restoration The relay can be programmed to automatically close the breaker after it has been tripped from undervoltage or underfrequency and after these parameters return to normal. Bus Transfer Scheme set of three relays, two on incoming and one on a normally open bus tie breaker can perform transfer on loss-of-source. Reclosure (760 Only) Reclosure can be initiated externally or from an overcurrent protection. Up to four reclosure operations are possible, each with a programmable dead time. For each reclosure shot, the relay can be programmed to block any IOC element, and to adjust the curve characteristics of any TOC element. The number of shots can be reduced by high currents. Breaker The relay provides for control of one breaker from faceplate push buttons, remote pole discrepancy indication can be achieved when two breaker auxiliary contacts, 52a and 52b, are monitored by the relay. Breaker position is indicated by LEDs on the faceplate. Monitoring and Metering The 750/760 features advanced monitoring and metering functions which include: Breaker Conditions The relay calculates the per-phase wear on the breaker contacts to establish a threshold. When the breaker maintenance threshold is exceeded the relay can trigger an alarm. n alarm is also generated if the relay detects that the supervisory trickle current is not present. failure to respond to an open or close signal in a programmed time can be used to generate an alarm. The VT failure feature monitors each phase of input voltage, generating an alarm and sending the programmed output signals when a failure is detected. By monitoring the power factor the 750/760 can help minimize both costs and voltage excursions. (see illustration right) Power Factor Two independent elements monitor power factor, each with programmable pickup, dropout and time delay. nalog Input ny external quantity may be monitored via an auxiliary current input. Two analog input level monitoring elements and two rate-of-change elements are available. When the measured quantity exceeds the pickup level, the relay can trigger an alarm or signal an output. Trip Counter The number of breaker trip operations is recorded, and can be displayed for statistical purposes (useful for units without operation counters). Metering The 750/760 performs accurate measurement of the following: FCTOR (+) lagging leading (-) SWITCH CPCITOR 1 IN CIRCUIT FCTOR 1 DELY SWITCH CPCITOR 2 IN CIRCUIT FCTOR 2 DELY SWITCH CPCITOR 2 OUT OF CIRCUIT SWITCH CPCITOR 1 OUT OF CIRCUIT FCTOR 1 DROPOUT FCTOR 2 DROPOUT FCTOR 1 PICKUP FCTOR 2 PICKUP 1472.cdr ctual V Hz W Wh var varh V PF Watthour cost Phasor presentation of V and I Symmetrical components of V and I Line (synchro) voltage: RMS voltage, frequency, and differentials Percent of load-to-trip nalog input Running and maximum demand:, MW, Mvar, MV Setpoints allow the user to simulate three common electrical utility demand measuring techniques. The relay uses captured data to calculate the type, distance to and the impedance of the fault. Records of the last 10 faults are stored. Event Recording The relay captures and stores the last 256 events, recording the time, date, cause, and system parameters. Events may be recorded selectively by category, so that only events of interest are recorded. Multiple relays can be coordinated within one milli-second when IRIG-B is available. Trace Memory (Oscillography) block of configurable volatile memory can be used for recording samples of the C input voltages and current, and the status of logic inputs and output relays. This memory can be configured between the ranges of two to 16 blocks with 16 to 256 power frequency cycles of data respectively. The amount of pre-event data recorded is set by the user. Trace memory recording can be triggered by operation of selected features or logic inputs. The 750/760 saves up to 256 power frequency cycles of waveform data Data Logging configurable memory block can record eight channels of any measured or calculated parameter. In continuous mode, this feature can be programmed to capture from 136 seconds of data per cycle to 4 weeks of data per hour. Simulation The relay provides a powerful simulation feature for testing the functionality of the relay in response to programmed conditions. System parameters are entered as setpoints. Pre-fault, fault, and post-fault conditions can be simulated to exercise relay features. 165

5 750/760 Feeder Protection System Self-Testing Self-diagnostics are run at power-up and continuously run during operation. Major failures can disable protection features while minor failures will only trip indicators. Logic Inputs The relay has 14 contact and 20 serial inputs which can be programmed to perform any of 60 predefined functions, including remote tripping, resetting, feature blocking, and more. Inputs and Outputs The 750/760 features user-configurable inputs and outputs: Outputs The 750/760 has eight electromechanical relay outputs. Two are factory programmed for breaker control Five can be configured to operate as either failsafe or non-failsafe, and either latching, self-resetting, or pulsed; these relays can be programmed to be operated by any feature One of the relays is factory programmed as a fail safe internal failure alarm relay The 750/760 has one high-speed SCR solid state output. The 750/760 has eight analog output channels. ny of 31 measured parameters can be selected to drive these outputs. IRIG-B Input n IRIG-B input allows time synchronization using a satellite signal. Scheme Logic The 750/760 features advanced scheme logic. Written descriptions of each feature, along with diagrams, are contained in the instruction manual. Sequential logic diagrams illustrate how each setpoint, input parameter and internal logic is used by a feature to obtain an output. Logic is described using basic ND and OR gates, and cross-references to other block diagrams are clear and precise. B C SETPOINT PHSES REQUIRED FOR OPERTION: Operate for ny One programmed ny Two combination ll Three Setpoints block diagram. ND 50N-2 SETPOINT O/C PICKUP: RUN Ig ³ PICKUP Level detectors block diagram. User Interfaces OR 142.cdr 1492.cdr The 750/760 features a variety of user interfaces to facilitate communications. monitoring, metering and security: Communications The 750/760 is equipped with three standard serial communications ports, one RS232 located in the front panel, and two RS45/RS422 in the rear of the relay. One optional Ethernet port is also available located, when ordered, at the rear of the relay. The front panel port allows easy local computer access. The rear ports provide remote communications or connection to a DCS, SCD, or PLC. The baud rate of all the serial ports is variable from 300 to 19,200 bps. The optional Ethernet port can be used to connect the 750/760 to 10 Mbps Ethernet networks. The 750/760 supports ModBus RTU, DNP3.0 Level 2, and ModBus RTU TCP/IP protocols. The three serial ports support ModBus RTU protocol, while any one of the two rear ports but not both can be configured to support DNP 3.0 Level 2. The optional Ethernet port supports ModBus RTU via TCP/IP protocol. The communication system of the 750/760 is designed to allow simultaneous communication via all ports. Using Ethernet as the physical media to integrate the 750/760 to Local or Wide rea Networks, replaces a multidrop-wired network (e.g., serial Modbus ), and eliminates expensive leased or dial-up connections, reducing monthly operating costs. ccess Security The 750/760 can be protected against unauthorized setpoint changes. jumper must be installed on the rear terminals to allow setpoint changes from the front panel. n optional passcode restricts setpoint changes from both the front panel and ports. Software The relay comes with EnerVista setup software which allows the user to detect status, read actual values and view and modify setpoints. It can also be used to monitor data, control the breaker, download and upload setpoint files, update the firmware, and test the relay. Keypad and Display The relay has control keys and a numerical keypad which can be used to control and program the relay without a computer. 40 character LCD display shows all setpoint and actual values locally. User-selected default messages are shown when not in use. Diagnostic messages are displayed when a trip or alarm condition occurs. LED Indicators The 750 has 20 LED indicators which display relay status, breaker status, and output status. The 760 features four additional LEDs to indicate recloser status. EnerVista Software The 750/760 comes with EnerVista, an industry-leading suite of software tools that simplifies every aspect of working with GE Multilin devices. EnerVista software is extremely easy to use and provides advanced features that help you maximize your investment in GE Multilin products. EnerVista Launchpad EnerVista Launchpad is a complete set of powerful device setup and configuration tools that is included at no extra charge with the 750/760. Bet up the 750/760 - and any other GE Multilin device - in minutes. Retrieve and view oscillography and event data at the click of a button. 166

6 750/760 SR Feeder Protection System Typical Wiring DIRECTION OF FLOW FOR POSITIVE WTTS POSITIVE DIRECTION OF LGGING VRS SOURCE Select BC or CB Phase Sequence THIS CONNECTION PROVIDES THE RESIDUL (3Io) CURRENT FOR NEUTRL OVERCURRENT UTOMTIC CT SHORTING TERMINLS PHSE CTs 1 OR 5 SEE INPUT WIRING IN INSTRUCTION MNUL WYE VT CONNECTION BUS VT LINE VT SEE VT WIRING IN INSTRUCTION MNUL L O D CONTROL OPEN DELT VT CONNECTION C B B C V B HUB RS / 760 PC SETUP V CB G5 H5 G6 H6 V VB VC VCOM PERSONL COMPUTER 9 PIN CONNECTOR SEE LOGIC INPUT WIRING IN INSTRUCTION MNUL SETPOINT CCESS KEYSWITCH Ethernet Option (T) RS232 INTERFCE RELY COMPUTER 1 1 TXD RXD RXD TXD SGND SGND G7 H7 G H G9 H9 G3 H3 G10 H10 G5 H5 G6 H6 G4 H4 H11 H12 G11 G12 I N I B N I C N I sg I sg I G N V V B V C V COM V 1 V 2 PHSE PHSE B PHSE C PHSE SYNC. CURRENT INPUTS VOLTGE INPUTS C1 C2 C3 C4 C5 C6 C7 C C9 C10 C11 C12 D1 D2 D3 D4 D5 D6 D7 D D9 D10 D11 D12 LOGIC INPUT 1 LOGIC INPUT 2 LOGIC INPUT 3 LOGIC INPUT 4 LOGIC INPUT 5 LOGIC INPUT 6 LOGIC INPUT 7 SETPOINT CCESS SETPOINT CCESS +32VDC LOGIC INPUT LOGIC INPUT 9 LOGIC INPUT 10 LOGIC INPUT 11 LOGIC INPUT 12 LOGIC INPUT 13 LOGIC INPUT 14 DC NEGTIVE IRIG ÑB SHIELD COM LOGIC INPUTS COM2 RS45 FRONT PNEL LOCL PROGRMMING PORT RS232 9 WIRE RS232 OUTPUT RELYS CONTROL COIL MONITOR 1 COIL MONITOR 2 SOLID STTE TRIP 1 TRIP 2 CLOSE 3 UXILIRY 4 UXILIRY 5 UXILIRY 6 UXILIRY 7 UXILIRY SELFÑTEST WRNING FILTER SFETY G1 H1 G2 H2 E1 F1 E2 F2 E3 F3 E4 F4 E5 F5 F6 E6 E F7 E7 F F9 E9 E11 F10 E10 F11 F12 E12 COMMUNICTIONS COM1 NLOG RS422 RS45 INPUT OUTPUTS TX TX COM SLD B12 B11 B10 B9 B B7 B6 B5 B4 B3 B2 B SEE COMMUNICTIONS WIRING IN INSTRUCTION MNUL 25 PIN CONNECTOR Multilin 750/760 g Feeder Protection System RJ-45 BUS SEE SUPERVISION WIRING IN INSTRUCTION MNUL TRIP COIL 52a 52b CLOSE COIL TRIP CIRCUIT CLOSE CIRCUIT OUTPUT CONTCTS SHOWN WITH NO CONTROL NOTE THE SELF-TEST WRNING OUTPUT RELY IS FILSFE. E12 & F12 RE OPEN WHEN CONTROL IS PPLIED ND NO SELF-TEST WRNINGS RE PRESENT. COM RS45 B OUTPUT CHNNEL COMMON COMMON 1 SCD OR COMPUTER INPUT CHNNELS COMMUNICTION SELECTED PRMETERS NOTE CBLE SHIELDS TO BE ED T PLC / COMPUTER END ONLY EN.cdr 167

7 750/760 Feeder Protection System 750/760 Technical Specifications PROTECTION PHSE/NEUTRL//NEGTIVE SEQUENCE TIME OVERCURRENT PROTECTION Pickup level: 0.05 to in steps of 0.01 x CT Dropout level: 97 to 9% of Pickup Curve shape: NSI extremely/very/moderately/ normally inverse Definite time (0.1 s base curve) IEC curve /B/C and short FlexCurve /B (programmable curves) IC extreme/very/inverse/short Curve multiplier: 0.00 to in steps of 0.01 Reset type: Instantaneous/linear Level accuracy: Per current input (I 2 is 3 x input error) Timing accuracy: at1.03 x PU: ±3% of trip time or ±40 ms (whichever is greater) SENSITIVE TIME OVERCURRENT PROTECTION Pickup level: to in steps of x CT Dropout level: 97 to 9% of pickup Curve shape: NSI extremely/very/moderately/ normally inverse Definite time (0.1 s base curve) IEC Curve /B/C and short FlexCurve /B (programmable curves) IC extreme/vary/ inverse/short Curve multiplier: 0.00 to in steps of 0.01 Reset type: Instantaneous/linear Level accuracy: Per current input (I 2 is 3 x input error) Timing accuracy:at1.03 x PU: ±3% of trip time or ±40 ms (whichever is greater) PHSE/NEUTRL//NEGTIVE SEQUENCE INSTNTNEOUS OVERCURRENT PROTECTION Pickup level: 0.05 to in steps of 0.01 x CT Dropout level: 97 to 9% of pickup Time delay: 0.00 to in steps of 0.01s Level accuracy: Per phase/neutral/ground current input (I 2 is 3 x phase input error) Timing accuracy: t 0 ms time delay (no intentional delay): Relay contacts = 50 ms max solid state output = 45 ms max t non-zero time delay: Delay accuracy = 0 to +20 ms Phases: ny one/any two/all three (programmable) phases have to operate for output (not for I 2 ) PHSE DIRECTIONL Relay Connection: 90 (quadrature) Polarizing Voltage: Vbc (phase ); Vca (phase B); Vab (phase C) MT: 0 to 359 in steps of 1 ngle ±2 Operation Delay: 25 to 40 ms NEUTRL DIRECTIONL NOTE: Polarized by voltage, current, or both voltage and current. For voltage element polarizing, the source VTs must be connected in Wye. Polarizing voltage:.vo Polarizing current: Ig MT: 0 to 359 in steps of 1 ngle accuracy: ±2 Operation delay: 25 to 40 ms / SENSITIVE DIRECTIONL NOTE: Polarized by voltage, current, or both voltage and current. For voltage element polarizing, the source VTs must be connected in Wye. Polarizing voltage:- Vo Polarizing current: Ig MT: 0 to 359 in steps of 1 ngle accuracy: ±2 Operation delay: 25 to 40 ms BUS UNDERVOLTGE 1/2 ND LINE UNDERVOLTGE 3/4 Minimum voltage:> programmable threshold from 0.00 to1.25 x VT in steps of 0.01 Pickup level: 0.00 to 1.25 in steps of 0.01 x VT Dropout level: 102 to 103% of pickup Curve: Definite time or inverse time Time delay: 0.0 to in steps of 0.1 s Phases: ny one/any two/all three (programmed) to operate for output (bus undervoltage only) Level accuracy: Per voltage input Timing accuracy:±100 ms OVERVOLTGE 1/2 Pickup level: 0.00 to 1.25 in steps of 0.01 x VT Dropout level: 97 to 9% of pickup Time delay: 0.0 to in steps of 0.1 s Phases: (definite time) ny one/any two/all three (programmable) phases have to operate for output Level accuracy: Per voltage input Timing accuracy:±100 ms PROTECTION NEGTIVE SEQUENCE VOLTGE Pickup level: 0.00 to 1.25 in steps of 0.01 x VT Dropout level: 97 to 9% of pickup Time delay: 0.0 to in steps of 0.1 (definite or inverse time) Level accuracy: 3 x voltage input error Timing accuracy:±100 ms UNDERFREQUENCY 1/2 Minimum voltage:0.00 to 1.25 in steps of 0.01 x VT in phase Pickup level: to in steps of 0.01 Hz Dropout level: Pickup Hz Time delay: 0.00 to in steps of 0.01 s (definite time) Level accuracy: ±0.02 Hz Timing accuracy: t 60 Hz: ±25 ms t 50 Hz: ±30 ms NEUTRL DISPLCEMENT Pickup level: 0.00 to 1.25 VT in steps of 0.01 Dropout level: 97 to 9% of pickup Curves: NSI Extremely/ Very/ Moderately/ Normally Inverse, Definite Time (0.1 s base curve), IEC Curve /B/C and Short, FlexCurve. /B (programmable curves), IC Extreme/ Very/ Inverse/Short Curve multiplier: 0 to in steps of 0.01 Reset type: Instantaneous/Linear Level accuracy: 3 voltage input error Timing accuracy: ±50 ms REVERSE (IF ENBLED) Pickup level: to rated power Dropout level: 94 to 95% of pickup Reset time: less than 100 ms Level accuracy: see 3 Real Power metering Time delay: 0.0 to s in steps of 0.1 Timing accuracy: ±200 ms (includes Reverse Power pickup time) BREKER FILURE Pickup level: 0.05 to 20.0 x CT in steps of 0.01 Dropout level: 97 to 9% of pickup Time delay: 0.03 to 1.00 s in steps of 10 Timing accuracy:±20 ms error Level accuracy: per CT input CONTROL UNDERVOLTGE RESTORTION Initiated by: Trip from undervoltage 1, 2, 3 or 4 Minimum voltage level: 0.00 to 1.25 x VT in steps of 0.01 Time delay: 0.1 to in steps of 0.1 s Incomplete sequence time:1 to in steps of 1 min. Phases: ny one/any two/all three (programmable) phases have to operate for output Level accuracy: Per voltage input Timing accuracy: ±100 ms UNDERFREQUENCY RESTORTION Initiated by: Trip from underfrequency 1 or 2 Minimum voltage level: 0.00 to 1.25 x VT in steps of 0.01 Minimum frequency level:20.00 to in steps of 0.01 Hz Time delay: 0.1 to in steps of 0.1 s Incomplete sequence time:1 to in steps of 1 min. Level accuracy: Per voltage and frequency input Timing accuracy: ±100 ms *Specifications subject to change without notice. METERING CURRENT Phasors: Phase RMS current Phase B RMS current Phase C RMS current % of load-to-trip accuracy: ±0.5% of fullscale VOLTGE Phasors: Phase -N (-B) voltage Phase B-N (B-C) voltage Phase C-N (C-) voltage ±0.25% of full scale FREQUENCY Measured: SYMMETRICL COMPONENTS Current level accuracy: ±1.5% of full scale Voltage level accuracy: ±0.75% of full scale Current and voltage angle accuracy: ±2 3 FCTOR -N (-B) bus and line voltage 16 to 65 Hz ±0.02 Hz 0.00 Lag to 1.00 to 0.00 Lead ± REL to MW ±1% of full scale 3 RECTIVE to Mvar ±1% of full scale 3 PPRENT to MV ±1% of full scale WTT-HOURS to MWh ±2% of full scale per hour VR-HOURS to Mvarh ±2% of full scale per hour DEMND RNGE Phase /B/C current: 0 to real power: to MW 3 reactive power: to Mvar 3 apparent power: to MV DEMND MESUREMENT Thermal exponential, 90% response time (programmed): 5, 10, 15, 20, 30, or 60 min. Block interval / rolling demand, time interval (programmed):` 5, 10, 15, 20, 30, or 60 min. ±2% of full scale 16

8 750/760 SR Feeder Protection System 750/760 Technical Specifications MONITORING PHSE/NEUTRL CURRENT Pickup level: 0.05 to CT in steps of 0.01 Dropout level: 97 to 9% of pickup Time delay: 0 to s in steps of 1 (Definite Time) Level accuracy: per current input Timing ±100 ms FCTOR Required voltage: >30% of nominal in all phases Pickup level: 0.50 lag to 0.50 lead in steps of 0.01 Dropout level: 0.50 lag to 0.50 lead in steps of 0.01 Time delay: 0 to s in steps of 1 (Definite Time) Level accuracy: ±0.02 Timing ±100 ms NLOG IN THRESHOLD Pickup level: 0 to units in steps of 1 Dropout level: 2 to 20% of Pickup (programmable, under/over) Time delay: 0 to s in steps of 1 Level accuracy: ±1% Timing ±100 ms NLOG IN RTE Pickup level: 1000 to 1000 m/hour in steps of 0.1 Dropout level: 97 to 9% of Pickup Time delay: 0 to s in steps of 1 Level accuracy: ±1% Timing ±100 ms OVERFREQUENCY Required voltage: >30% of nominal, phase Pickup level: to Hz in steps of0.01 Dropout level: Pickup 0.03 Hz Time delay: 0.0 to s in steps of 0.1 Level accuracy: ±0.02 Hz Timing ±34 ms at 60 Hz;±40 ms at 50 Hz DEMND Demand accuracies are based on less than 2 CT and 50 to 130 V inputs. Measured values: Phase /B/C current (), 3 real power (MW), 3 reactive power (Mvar), 3 apparent power (MV) Measurement type: Thermal Exponential, 90% response time (programmed): 5, 10, 15, 20, 30, or 60 min. Block Interval / Rolling Demand, time interval (programmed): 5, 10, 15, 20, 30, or 60 min. Block Interval with Start Demand Interval Logic Input pulses mps pickup level: 10 to in steps of 1 MW pkp level: 0.1 to in steps of 0.1 Mvar pkp level: 0.1 to in steps of 0.1 MV pkp level: 0.1 to in steps of 0.1 Level accuracy: ±2% VT FILURE Programmable to inhibit features. TRIP / CLOSE COIL MONITORS Detect open trip and close circuits. PULSE OUTPUT Pulse output is 1 second on time and one second off time after the programmed interval. LST TRIP DT Records cause of most recent trip, 4 RMS currents, and 3 RMS voltages with a 1 ms time stamp. TRIP COUNTERS ccumulates all ground, sensitive ground, neutral, negative sequence, and phase overcurrent trips. EVENT RECORDER (256 EVENTS) Records event cause, 3-phase current phasors, 1 ground current phasor, sensitive ground current phasors, 3 voltage phasors, system frequency, synchronizing voltage, synchronizing frequency, and analog input level with a 1 ms time stamp. WVEFORM CPTURE Data channels: 4 currents, 3 voltages, 14 logic input states and output relays Sample rate: Trigger source: 16 per cycle Element pickup/trip/dropout, control/alarm event, logic input or manual command Trigger position: 0 to 100% Storage capacity: 2 to 16 events with 4096 to 512 samples of data respectively DT LOGGER Data channels: Sample rate: Trigger source: channels; same parameters as for analog outputs available Per Cycle / Per second / Per Minute / Every 5,10,15, 20, 30, or 60 min Pickup/trip/dropout, control/alarm event, logic input, manual command, or continuous Trigger position: 0 to 100% Storage capacity: 2 to 16 events with 204 to 256 samples of data respectively (4096 if continuous) INPUTS PHSE CURRENT INPUT Source CT: 1 to primary / 1 or 5 secondary Relay input: 1 or 5 (specified when ordering) Burden: Less than 0.2 V at 1 or 5 Conversion range: 0.01 to 20 x CT (fundamental frequency only) at <2 x CT: ±0.5% of 2 x CT at >2 x CT: ±1% of 20 x CT Overload withstand: 1 0 times rated current 3 times rated current Calculated neutral current errors: 3 x phase inputs CURRENT INPUT Source CT: 1 to primary / 1 or 5 secondary Relay input: 1 or 5 (specified when ordering) Burden: Less than 0.2 V at 1 or 5 Conversion range: 0.01 to 20 x CT (fundamental frequency only) at <2 x CT: ±0.5% of 2 x CT at >2 x CT: ±1% of 20 x CT Overload withstand: 1 0 times rated current 3 times rated current SENSITIVE CURRENT INPUT Source CT: 1 to primary / 1 or 5 secondary Relay input: 1 or 5 (specified when ordering) Burden: Less than 0.2 V at 1 or 5 Conversion range: to x CT (fundamental frequency only) at <0.1 x CT: ±0.2% of 1 x CT at >0.1 x CT: ±1% of 1 x CT Overload withstand: 1 0 times rated current 3 times rated current BUS ND LINE VOLTGE INPUTS Source VT: 0.12 to 600 kv / 50 to 240 V Source VT ratio: 1 to 5000 in steps of 0.1 Relay input: 50 V to 240 V phase-neutral Burden: Less than V at 120 V Max continuous: or >576 K 273 V phase-neutral (full scale) CT (fundamental frequency only) ccuracy (0 40 C): ±0.205% of full scale (10 to 130 V) ±0.% of full scale (130 to 273 V) (for open delta, the calculated phase has errors 2 times those shown above) LOGIC INPUTS Inputs: 14 contact and / or virtual, 6 virtual only (functions assigned to logic inputs) Dry contacts: 1000 maximum ON resistance (32 2 m provided by relay) Wet contacts: 30 to m (external DC voltage only) NLOG INPUT Current input: 0 1 m, 0 5 m, 0 10 m, 0 20 m, or 4 20 m (programmable) Input impedance: 375 ±10% Conversion range: 0 to 21 m ±1% of full scale TRIP ND CLOSE COIL MONITORING INPUTS cceptable voltage range: 20 to 250 VDC Trickle current: 2 m to 5 m IRIG-B INPUT mplitude-modulated: 2.5 to 6 3:1 signal ratio DC shift: TTL OUTPUTS NLOG OUTPUTS Type: ctive Outputs: channels; specify one of the following output ranges when ordering: Output range Maximum load 0 1 m 12 kω 0 5 m 2.4 kω 0 10 m 1.2 kω 4 20 m 600Ω Isolation: Fully isolated ±1% of full scale Response time: 100% indication in less than 3 power system cycles (50 60 Hz) SOLID STTE TRIP Make and carry: 250 VDC for 500 ms Output relays: Configuration: 1 TRIP: Form 2 CLOSE: Form 3 7 UXILIRY: Form C SELF-TEST WRNING: Form C Contact material: Silver alloy COMMUNICTIONS Serial Ports: ,200 baud, programmable parity, ModBus RTU or DNP 3.0 protocol Ethernet Port: 10BaseT, RJ45 Connector, ModBus RTU over TCP/IP SUPPLY CONTROL Options: LO/HI (specified when ordering) LO range: DC = 20 to 60 V C = 20 to Hz HI range: DC = to 300 V C = 70 to Hz Power: 25 V nominal, 35 V maximum Voltage loss hold-up time: 30 ms ENVIRONMENTL Operating temperature range: -40 C to +60 C mbient storage temperature: -40 C to +0 C mbient shipping temperature: -40 C to +0 C Humidity: up to 90% noncondensing Pollution degree: 2 IP rating: 40-X PRODUCTION TESTS Thermal cycling: Operational test at ambient, reducing to-40 C and then increasing to 60 C Dielectric strength:on CT inputs, VT inputs, control power inputs, switch inputs, coil supervision outputs, and relay outputs (2 kvac for 1 minute) to safety ground. TYPE TESTS Standard Test Name Level EI 45 RS45 Communications Test 32 units at 4000 ft. IEC Relative Humidity Cyclic 55 o C at 95% RH IEC Composite Temperature 65/-10 o C at 93 % RH /Humidity IEC Dielectric Strength 2300 V C IEC Insulation Resistance >100 MΩ / 500V C/10 s IEC Sinusoidal Vibration 2 g IEC Shock and Bump 5 g / 10 g / 15 g IEC Seismic 6 g IEC Damped Oscillatory Burst, 2.5 kv / 1 kv 1 MHz IEC Electrostatic Discharge: 15 kv / kv ir and Direct IEC Radiated RF Immunity 10 V/m IEC Electrical Fast Transient 4 kv /Burst Immunity IEC Surge Immunity 4 kv / 2 kv IEC Conducted RF Immunity, 10 V/m 150 khz to 0 MHz IEC Radiated RF Emission Group 1 Class IEC Conducted RF Emission Group 1 Class IEC Ingress of Solid Objects IP40 (front), IP20 and Water (IP) (back) IEC Power Frequency Mag- 30 /m netic Field Immunity IEC Pulse Magnetic Field 1000 /m Immunity IEC Voltage Dip; Voltage 0%, 40%, 100% Interruption IEEE C Fast Transient SWC ±4 kv IEEE C Oscillatory Transient SWC ±2.5 kv IEEE C Electrostatic Discharge: ±15 kv / ± kv ir and Direct PPROVLS UL: Recognized under E349 CS: pproved under LR : Conforms to IEC ISO: Manufactured to an ISO9001 registered program. 169

9 750/760 Feeder Protection System Ordering *** * * * * * * * * P1 P5 G1 G5 S1 S5 LO HI R G E T H Phase Current Inputs 1 phase current inputs 5 phase current inputs Ground Current Inputs 1 zero sequence current inputs 5 zero sequence current inputs Sensitive Ground Current Inputs 1 sensitive ground current input 5 sensitive ground current input Power Supply Options VDC, Hz 300 VDC, Hz nalog Outputs Eight 0 1 m analog outputs Eight 0 5 m analog outputs Eight 0 10 m analog outputs Eight 4 20 m analog outputs Breaker Status LED Red breaker closed LED Green breaker closed LED Enhancements Enhanced display, larger LCD, improved keypad Enhanced display with Ethernet 10BaseT option Environmental Protection Harsh (Chemical) Environment Conformal Coating ccessories: 19-1 Panel Single cutout 19" panel 19-2 Panel Dual cutout 19" panel Dual mounting available with the 19-2 panel Mod 009 (D1) 1 polarizing ground current input Mod 009 (D5) 5 polarizing ground current input Build an instant archive on any PC of the latest GE Multilin manuals, service advisories, application notes, specifications or firmware for your 750/760. utomatic document and software version updates via the Internet and detailed notification of new releases. EnerVista Viewpoint EnerVista is a premium workflow-based toolset that provides engineers and technicians with everything they need to monitor, test and troubleshoot GE Multilin IEDs and manage settings files with ease. The 750/760 includes an evaluation version of EnerVista Viewpoint. Settings file change control, automatic error checking and a visual FlexLogic editor make creating, editing and storing settings a snap Plug-and-Play monitoring automatically creates customized monitoring screens for your 750/760 - no programming required Powerful testing tools help shorten your commissioning cycle Quickly retrieve oscillography and event data when a fault occurs See the EnerVista Suite section for more information. ccessorize your 750/760 NOTE: For dimensions see SR Family brochure. 750/760 Guideform Specifications For an electronic version of the 750/760 guideform specifications, please visit: /specs, fax your request to or to: literature.multilin@ge.com