CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONSN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 2-1322.4.1 Protection elementsThe operating times include the activation time of a trip rated form-A output contact unless otherwise indicated. FlexLogicoperands of a given element are 4 ms faster. Take this into account when using FlexLogic to interconnect with otherprotection or control elements of the relay, building FlexLogic equations, or interfacing with other intelligent electronicdevices (IEDs) or power system devices via communications or different output contacts. If not specified, the operate timesgiven here are for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.PHASE IOCPickup level: 0.000 to 30.000 pu in steps of 0.001Dropout level: 97 to 98% of pickupLevel accuracy:0.1 to 2.0 CT rating: ±0.5% of reading or ±0.4% of rated (whichever is greater)> 2.0 CT rating: ±1.5% of readingOverreach: <2%Pickup delay: 0.00 to 600.00 s in steps of 0.01Reset delay: 0.00 to 600.00 s in steps of 0.01Operate time: <16 ms at 3 pickup at 60 Hz (Phase/Ground IOC)<20 ms at 3 pickup at 60 Hz (Neutral IOC)Timer accuracy: ±3% of operate time or ±1/4 cycle (whichever is greater)SENSITIVE DIRECTIONAL POWERMeasured power: 3-phase, true RMSNumber of stages: 2Characteristic angle: 0 to 359° in steps of 1Calibration angle: 0.00 to 0.95° in steps of 0.05Minimum power: –1.200 to 1.200 pu in steps of 0.001Pickup level accuracy: ±1% or ±0.001 pu, whichever is greaterHysteresis: 2% or 0.001 pu, whichever is greaterPickup delay: 0 to 600.00 s in steps of 0.01Timer accuracy: ±3% of operate time or ±1/4 cycle (whichever is greater)Operate time: <50 msPHASE UNDERVOLTAGEPickup level: 0.000 to 3.000 pu in steps of 0.001Dropout level: 102 to 103% of pickupLevel accuracy: ±0.5% of reading from 10 to 208 VCurve shapes: GE IAV Inverse;Definite Time (0.1s base curve)Curve multiplier: Time dial = 0.00 to 600.00 in steps of 0.01Curve timing accuracy at <0.90 x pickup:±3.5% of operate time or ±1/2 cycle (whichever is greater) from pickup to operatePHASE OVERVOLTAGEVoltage: Phasor onlyPickup level: 0.000 to 3.000 pu in steps of 0.001Dropout level: 97 to 98% of pickupLevel accuracy: ±0.5% of reading from 10 to 208 VPickup delay: 0.00 to 600.00 in steps of 0.01 sOperate time: 30 ms at 1.10 pickup at 60 HzTimer accuracy: ±3% of operate time or ±1/4 cycle (whichever is greater)UNDERFREQUENCYMinimum signal: 0.10 to 1.25 pu in steps of 0.01Pickup level: 20.00 to 65.00 Hz in steps of 0.01Dropout level: pickup + 0.03 HzLevel accuracy: ±0.001 HzTime delay: 0 to 65.535 s in steps of 0.001
