GEK-106237P MIFII Digital Feeder Relay 2-25
2 PRODUCT DESCRIPTION 2.16 TECHNICAL SPECIFICATIONS
2
2.16TECHNICAL SPECIFICATIONS
2.16.1 PROTECTION ELEMENTS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
2.16.1.1 PHASE / GROUND TIME OVERCURRENT (51P,51G)
Current: Fundamental
Pickup Level: 0.1 – 2.4 times In (rated current) in steps of 0.01 x In (51P & 51G if 1/5 A
ground models)
0.005-0.12 A in (51G in sensitive ground model)
Dropout Level: 97% (typical) of Pickup
Level Accuracy: ±1% at rated current
±3% of injected current ±0.1% full scale in the whole range
Curve Shapes: IEC (B.S.) A/B/C
ANSI Inverse, Very Inverse, Extremely Inverse, user defined
IAC Inverse, Very Inverse, Extremely Inverse, Inverse Short or Inverse Long
Time delayed (0.00 to 600.00 sec. in steps of 0.01 sec).
Time Dial: 0.05 to 2 in steps of 0.01 for IEC curves
0.5 to 20 in steps of 0.1 for ANSI curves
0.5 to 10 in steps of 0.1 for IAC curves
Reset Type: Instantaneous
Timing Accuracy: ± 5% + 50 ms of set time for 2< I < 20 times the Actual Pickup Level for IEC/
ANSI/definite time curves. For I<2 times the Actual Pickup refer to
APPENDIX F TIMING ACCURACY FOR 51 ELEMENT.
± 6% of set time for 2 < I < 20 times the Actual Pickup for IAC curves
Type/measure time: DFT of 1 cycle
2.16.1.2 PHASE / GROUND INSTANTANEOUS OVERCURRENT (50P1, 50P2, 50G1, 50G2)
Current:
Pickup Level:
Dropout Level:
Level Accuracy:
Overreach:
Time Delay:
Reset Type:
Operate Time:
Timing Accuracy:
Type/measure time:
Fundamental
0.1 to 30.0 times In (rated current) in steps of 0.1 x In. (50P1/P2 & 50G1/G2
for 1/5 A ground models)
0.005 to 0.12 A (50G1/G2 for sensitive ground models)
97% (typical) of Pickup
±1% at rated current
±3% of injected current ±0.1% full scale in the whole range
< 2%
0.00 to 600.00 sec. in steps of 0.01 s
Instantaneous
Between 20 and 30 ms for I> 2 x Actual Pickup
± 5% or 50ms(whichever is greater) of settled time for I > 2 times the Actual
Pickup
DFT of 1 cycle
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