I-Squared-T Curve; Custom Protective Curve; Over/Udervoltage Curves - Siemens ISGS Operator's Manual

100
10
1
0.1
0.01
1 10
Multiples of Pickup
= ------------------------------------ -
--- -
---- -
:
---- -
1000
100
10
9.9
7.0
5.0
3.0
1
1.5
0.5
0.1
0.1
0.01
50
1
–
9.9
7.0
5.0
3.0
1.5
0.5
0.1
10 50
Multiples of Pickup