ABB REF610 - Very Inverse-Time Characteristic

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
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40
70
60
50
t/s
13456789
10
220
0.02
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0.1
0.05
0.1
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0.6
0.8
1.0
0.7
0.5
0.9
CURRENT IN MULTIPLES OF SETTING
A070034
Fig. 5.1.4.9.-2 Very inverse-time characteristic
48
REF610REF610
Feeder Protection Relay
Technical Reference Manual - ANSI Version
1MRS755535