GE 489 - Manual (Page 241)

GE Multilin 489 Generator Management Relay B-5
APPENDIX B B.1 TIME OVERCURRENT CURVES
B
B.1.2 DEFINITE TIME CURVES
Figure B–5: DEFINITE TIME CURVES
489
DEFINITE TIME
0.5
1.0
2.0
3.0
4.0
6.0
8.0
10.0
15.0
20.0
30.0
0.01
0.1
1
10
100
1000
0
.1
1 10
100
CURRENT (I/Ipu)
T
R
IPT
IM
E
(sec)
MULTIPLIER
808798A4.CDR
GE Multilin