ABB REF610 - Normal Inverse-Time Characteristic

47
TD
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
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8
9
10
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40
70
60
50
t/s
1345678910220
0.02
0.03
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0.1
0.05
0.1
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0.8
1.0
0.5
0.7
0.9
CURRENT IN MULTIPLES OF SETTING
A070033
Fig. 5.1.4.9.-1 Normal inverse-time characteristic
Feeder Protection Relay
Technical Reference Manual - ANSI Version
REF610REF610
1MRS755535