ABB REF610 - Extremely Inverse-Time Characteristic

49
TD
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
70
60
50
t/s
1345678910220
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.05
0.1
0.2
0.3
0.4
0.6
0.8
1.0
CURRENT IN MULTIPLES OF SETTING
A070035
Fig. 5.1.4.9.-3 Extremely inverse-tim e characteristic
Feeder Protection Relay
Technical Reference Manual - ANSI Version
REF610REF610
1MRS755535