Inverse Time Overcurrent (51Ph, 51Pl, 51N, 51G Y 46) - GE Multilin F650 Instruction Manual

9 COMMISSIONING

9.11INVERSE TIME OVERCURRENT (51PH, 51PL, 51N, 51G Y 46)

Set the relay to trip for the protection element being tested. Configure any of the outputs to be activated only by the
protection element being tested.
Apply 0.9 times the Pickup current and check that the relay does not trip.
Apply 1.5 times the Pickup current. The relay should trip according to the time corresponding to its set curve.
Apply 5 times the Pickup current. The relay should trip according to the time corresponding to its set curve.
PROTECTION ELEMENT SETTINGS (51PH, 51PL, 51N, 51G AND 46)
SETTING
FUNCTION
INPUT
PICKUP LEVEL
CURVE
TD MULTIPLIER
VOLTAGE RESTRAINT
ELEMENT PHASE
51PH IA
IB
51PL IC
IB
51N IC
51G IG
46 I2
GE Multilin
9.11 INVERSE TIME OVERCURRENT (51PH, 51PL, 51N, 51G Y 46)
VALUE
ENABLED
PHASOR (DFT)
1
MODIFY FOR EACH TEST
MODIFY FOR EACH TEST
DISABLED
CURVE TYPE DIAL
IEEE Ext Inv 0.5
IEC Curve A 0.05
IEEE Ext Inv 0.5
IEC Curve A 0.05
IEEE Ext Inv 0.5
Definite Time 2
IEC Curve A 0.05
F650 Digital Bay Controller
UNIT
A
TIMES TRIPPING TIMES (SEC)
IPICKUP
THEORETICA ADMISSIBLE
L
0.9 NA
1.5 11.34 [11.00 – 11.60]
5 0.648 [0.600 – 0.710]
0.9 NA
1.5 0.860 [0.750 – 0.950]
5 0.214 [0.200 – 0.300]
0.9 NA
1.5 11.34 [11.00 – 11.60]
5 0.648 [0.600 – 0.710]
0.9 NA
1.5 0.860 [0.750 – 0.950]
5 0.214 [0.200 – 0.300]
0.9 NA
1.5 11.34 [11.00 – 11.60]
5 0.648 [0.600 – 0.710]
0.9 NA
5 2.000 [1.900 – 2.100]
0.9 NA
1.5 0.860 [0.750 – 0.950]
5 0.214 [0.200 – 0.300]
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