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RELAY COMMISSIONING
GEK-106273L
MIF Digital Feeder Protection
9-5
9.11
RELAY METERING
9.11.1. CURRENT
METERING
PHASE CURRENT
•
Set the relay to the same frequency than the AC source used and apply the following currents:
Phase
1
2
3
4
Ia (Amps)
0.5 x In (phase)
Ib (Amps)
0.1 x In (phase)
1 x In (phase)
Ic (Amps)
2 x In (phase)
•
Check that the relay measures Ia, Ib and Ic with an accuracy better than 3%.
•
If the test were carried out at 50 Hz, repeat at 60 Hz (if at 60 Hz, repeat at 50 Hz).
GROUND CURRENT
•
Set the relay to the same frequency than the AC source used and apply the following current:
1
2
In (Amps)
0.1 x In (ground)
5 x In (ground)
•
Check that the relay measures the current with an accuracy better than 3%.
•
If the test were carried out at 50 Hz, repeat at 60 Hz (if at 60 Hz, repeat at 50 Hz).
9.12
PHASE IOC HIGH SETTING UNIT (50PH)
•
Enable only 50PH function.
•
Set its time delay and pickup to the minimum possible.
•
With 0.9 times the pickup current the relay should not trip.
•
With 1.1 times the pickup current the relay should trip in between 10 to 50 ms.
•
With 4 times the pickup current the relay should trip in between 10 to 40 ms.
•
The test should be carried out for phases A, B and C.
9.13
PHASE IOC LOW SETTING UNIT (50PL)
•
Enable only 50PL function.
•
Set its time delay and pickup to the minimum possible.
•
With 0.9 times the pickup current the relay should not trip.
•
With 1.1 times the pickup current the relay should trip in between 10 to 50 ms.
•
With 4 times the pickup current the relay should trip in between 10 to 40 ms.
•
The test should be carried out for phases A, B and C.
Содержание GEK-106273L
Страница 19: ...GETTING STARTED 1 12 MIF Digital Feeder Protection GEK 106273L ...
Страница 95: ...SETTINGS 5 38 MIF Digital Feeder Protection GEK 106273L ...
Страница 101: ...I O CONFIGURATION 6 44 MIF Digital Feeder Protection GEK 106273L ...
Страница 127: ...KEYPAD AND DISPLAY 8 26 MIF Digital Feeder Protection GEK 106273L ...
Страница 147: ...INSTALLATION AND MAINTENANCE 10 2 MIF Digital Feeder Protection GEK 106273L ...
Страница 154: ...ANNEX 1 THERMAL IMAGE UNIT GEK 106273L MIF Digital Feeder Protection 11 7 Figure A 1 1 THERMAL CURVE FOR τ1 3 MINUTES ...
Страница 155: ...ANNEX 1 THERMAL IMAGE UNIT 11 8 MIF Digital Feeder Protection GEK 106273L Figure A 1 2 THERMAL CURVES FOR τ1 3 MIN ...
Страница 199: ...ANNEX 5 HARMONIC FILTERING 15 4 MIF Digital Feeder Protection GEK 106273L ...