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RELAY COMMISSIONING
• Set the relay as follows:
51N Settings Group
Curve
Definite Time Delay
• Apply 0.9 times the pickup current at the ground terminals and the relay should not trip.
• Apply 1.1 times the pickup current and the relay should trip in 1.0 sec. Acceptable time range is between 1.00 and
1.06 sec.
• Apply 4 times the pickup current and the relay should trip in 1.0 sec. Acceptable time range is between 1.00 and
1.06
GEK-106273L
DEFINITE TIME
1.0
MIF Digital Feeder Protection
9.18.7.
DEFINITE TIME
sec.
9-11
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