GE Multilin L90 Line Current Differential System 2-212 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS2SYNCHROCHECKMax voltage difference: 0 to 400000 V in steps of 1Max angle difference: 0 to 100 ° in steps of 1Max freq. difference: 0.00 to 2.00 Hz in steps of 0.01Hysteresis for max. freq. diff.: 0.00 to 0.10 Hz in steps of 0.01Dead source function: None, LV1 & DV2, DV1 & LV2, DV1 orDV2, DV1 xor DV2, DV1 & DV2(L = Live, D = Dead)AUTORECLOSURETwo breakers applicationsSingle- and three-pole tripping schemesUp to 4 reclose attempts before lockoutSelectable reclosing mode and breaker sequencePILOT-AIDED SCHEMESPermissive Overreaching Transfer Trip (POTT)TRIP OUTPUTCollects trip and reclose input requests and issues outputs to con-trol tripping and reclosing.Communications timer delay: 0 to 65535 s in steps of 0.001Evolving fault timer: 0.000 to 65.535 s in steps of 0.001Timing accuracy: ±3% or 4 ms, whichever is greaterPOWER SWING DETECTFunctions: Power swing block, Out-of-step tripCharacteristic: Mho or QuadMeasured impedance: Positive-sequenceBlocking / tripping modes: 2-step or 3-stepTripping mode: Early or DelayedCurrent supervision:Pickup level: 0.050 to 30.000 pu in steps of 0.001Dropout level: 97 to 98% of pickupFwd / reverse reach (sec. :): 0.10 to 500.00 : in steps of 0.01Left and right blinders (sec. :): 0.10 to 500.00 : in steps of 0.01Impedance accuracy: ±5%Fwd / reverse angle impedances: 40 to 90° in steps of 1Angle accuracy: ±2°Characteristic limit angles: 40 to 140° in steps of 1Timers: 0.000 to 65.535 s in steps of 0.001Timing accuracy: ±3% or 4 ms, whichever is greaterLOAD ENCROACHMENTResponds to: Positive-sequence quantitiesMinimum voltage: 0.000 to 3.000 pu in steps of 0.001Reach (sec. :): 0.02 to 250.00 : in steps of 0.01Impedance accuracy: ±5%Angle: 5 to 50° in steps of 1Angle accuracy: ±2°Pickup delay: 0 to 65.535 s in steps of 0.001Reset delay: 0 to 65.535 s in steps of 0.001Time accuracy: ±3% or ±4 ms, whichever is greaterOperate time: < 30 ms at 60 HzOPEN POLE DETECTORFunctionality: Detects an open pole condition, monitor-ing breaker auxiliary contacts, the cur-rent in each phase and optional voltageson the lineCurrent pickup level: 0.000 to 30.000 pu in steps of 0.001Line capacitive reactances (X C1 , X C0 ): 300.0 to 9999.9 sec. : insteps of 0.1Remote current pickup level: 0.000 to 30.000 pu in steps of 0.001Current dropout level: pickup + 3%, not less than 0.05 puTHERMAL OVERLOAD PROTECTIONThermal overload curves: IEC 255-8 curveBase current: 0.20 to 3.00 pu in steps of 0.01Overload (k) factor: 1.00 to 1.20 pu in steps of 0.05Trip time constant: 0 to 1000 min. in steps of 1Reset time constant: 0 to 1000 min. in steps of 1Minimum reset time: 0 to 1000 min. in steps of 1Timing accuracy (cold curve): ±100 ms or 2%, whichever isgreaterTiming accuracy (hot curve): ±500 ms or 2%, whichever is greaterfor I p < 0.9 × k × I b and I / (k × I b ) > 1.1TRIP BUS (TRIP WITHOUT FLEXLOGIC™)Number of elements: 6Number of inputs: 16Operate time: <2 ms at 60 HzTime accuracy: ±3% or 10 ms, whichever is greater2.4.2 USER-PROGRAMMABLE ELEMENTSFLEXLOGIC™Programming language: Reverse Polish Notation with graphicalvisualization (keypad programmable)Lines of code: 512Internal variables: 64Supported operations: NOT, XOR, OR (2 to 16 inputs), AND (2to 16 inputs), NOR (2 to 16 inputs),NAND (2 to 16 inputs), latch (reset-domi-nant), edge detectors, timersInputs: any logical variable, contact, or virtualinputNumber of timers: 32Pickup delay: 0 to 60000 (ms, sec., min.) in steps of 1Dropout delay: 0 to 60000 (ms, sec., min.) in steps of 1FLEXCURVES™Number: 4 (A through D)Reset points: 40 (0 through 1 of pickup)Operate points: 80 (1 through 20 of pickup)Time delay: 0 to 65535 ms in steps of 1FLEX STATESNumber: up to 256 logical variables groupedunder 16 Modbus addressesProgrammability: any logical variable, contact, or virtualinput
