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APPENDIX B
B.3IAC CURVES
For 1<I/Ipickup<1.05 the unit will show a pickup signal and generate no trip
For 1.05<=I/Ipickup<30 trip time will be:
For I/Ipickup >= 30
Where:
Table B–5: GE IAC INVERSE TIME CURVE CONSTANTS
IAC CURVE SHAPE
IAC Extremely Inverse
IAC Very Inverse
IAC Inverse
IAC Inverse Long
IAC Inverse Short
TDM: Time Dial
GEK-106237P
HMI
A
Extr Inverse
0.0040
Very Inverse
0.0900
Mod Inverse
0.2078
Inverse Long
0.3754
Inverse Short
0.0442
MIFII Digital Feeder Relay
B
C
D
0.6379
0.6200
1.7872
0.7955
0.1000
-1.2885
0.8630
0.8000
-0.4180
17.8307
0.32
-23.7187
0.0482
0.34
0.0223
B.3 IAC CURVES
B
E
0.2461
7.9586
0.1947
23.8978
0.0697
B-11
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