Time Overcurrent Curves; Ansi Curves; C.1.1 Ansi Curves - GE 489 Instruction Manual

APPENDIX C
APPENDIX C CURVESC.1 TIME OVERCURRENT CURVES
1000
100
10
1
0.1
0.01
0.1
GE Power Management
GE Power Management
1
CURRENT (I/Ipu)
Figure C–1: ANSI MODERATELY INVERSE CURVE
489 Generator Management Relay
C.1 TIME OVERCURRENT CURVES

C.1.1 ANSI CURVES

489 ANSI
MODERATELY INVERSE
MULTIPLIER
30.0
20.0
15.0
10.0
8.0
6.0
4.0
3.0
2.0
1.0
0.5
10
100
808802A3.CDR
C
C-1