Iec Extremely Inverse Curve; Ansi Inverse Curve - GE MIFII GEK-106237P Instruction Manual

9.16 GROUND TOC ELEMENT (51G)
Set the relay as follows:
Apply 0.9 times the pickup current at the ground terminals and the relay should not trip.
Apply 1.5 times the pickup current and the relay should trip between 27 and 39 sec.
Apply 5 times the pickup current and the relay should trip between 1.5 and 1.85 sec
Set the relay as follows:
Apply 0.9 times the pickup current at the ground terminals and the relay should not trip.
Apply 1.5 times the pickup current and the relay should trip between 36.2 and 51.3 sec.
Apply 5 times the pickup current and the relay should trip between 3.88 and 4.27 sec.
9
9-20
51G SETTINGS GROUP
Curve
Time Dial
51G SETTINGS GROUP
Curve
Time Dial
MIFII Digital Feeder Relay

9.16.3 IEC EXTREMELY INVERSE CURVE

EXTREMELY INVERSE
0.5
INVERSE
10
9 RELAY COMMISSIONING

9.16.4 ANSI INVERSE CURVE

GEK-106237P