GE 469 Instruction Manual

Also see for Masoneilan 469 Series: Instruction manual Instruction manual Communications guide Instruction manual Instruction manual

Contents

CHAPTER 2: INTRODUCTION469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL 2–9Timing accuracy: ...........................................<100 ms or ±0.5% of total timeElements:............................................................Trip and AlarmGROUND INSTANTANEOUS OVERCURRENTPickup level: ......................................................0.1 to 1.0 × CT primary in steps of 0.01Time delay:........................................................0 to 1000 ms in steps of 10Pickup accuracy: ...........................................as per ground current inputTiming accuracy: ...........................................+50 msElements:............................................................Trip and AlarmJOGGING BLOCKStarts/hour: 1 to 5 in steps of 1Time between starts: 0 to 500 min.Timing accuracy: ±0.5 s or ± 0.5% of total timeElements: BlockMECHANICAL JAMPickup level: ......................................................1.01 to 3.00 × FLA in steps of 0.01 of any one phase,blocked on startTime delay:........................................................1 to 30 s in steps of 1Pickup accuracy: ...........................................as per phase current inputsTiming accuracy: ...........................................±0.5 sElements:............................................................TripOVERLOAD / STALL PROTECTION / THERMAL MODELOverload curves: ...........................................15 standard overload curves, custom curve, voltagedependent custom curve for high inertia starting (allcurves time out against average phase current)Biasing:................................................................Phase unbalanceHot/cold curve ratioStator RTDRunning cool rateStopped cool RateLine voltageOverload pickup: ...........................................1.01 to 1.25 (for service factor)Pickup accuracy: ...........................................as per phase current InputsTiming accuracy: ...........................................±100 ms or ±2% of total timeElements:............................................................Trip and AlarmOVERVOLTAGEPickup level: ......................................................1.01 to 1.10 × rated in steps of 0.01 of any one phaseTime delay:........................................................0.1 to 60.0 s in steps of 0.1Pickup accuracy: ...........................................as per voltage inputsTiming accuracy: ...........................................±100 ms or ±0.5% of total timeElements:............................................................Trip and AlarmPHASE DIFFERENTIAL INSTANTANEOUS OVERCURRENTPickup level: ......................................................0.05 to 1.0 × CT primary in steps of 0.01 of any one phaseTime delay:........................................................0 to 1000 ms in steps of 10Pickup accuracy: ...........................................as per phase differential current inputsTiming accuracy: ...........................................+50 msElements:............................................................TripPHASE SHORT CIRCUITPickup level: ......................................................2.0 to 20.0 × CT primary in steps of 0.1 of any one phaseTime delay:........................................................0 to 1000 ms in steps of 10Pickup accuracy: ...........................................as per phase current inputs