Micom P631 - Page 190

0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k
=
0.05
k
=
0.1
k=1
k
=
10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k
=
0.05
k
=
0.1
k
=
1
k
=
10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k
=
0.1
k
=
1
k
=
10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k
=
0.1
k
=
1
k
=
10
IDMT Tripping Characteristics per IEC 255–3
Characteristic 1: IEC 255–3, Standard Inverse
Characteristic 2: IEC 255–3, Very Inverse
Characteristic 4: IEC 255–3, Long Time InverseCharacteristic 3: IEC 255–3, Extremely Inverse
Fig. 3-99: Tripping characteristics as per IEC 255-3.
P631
3 Operation
3-134 P631/EN M/R-11-C // P631-310-650