Siemens 7SR10 Argus Series Manual page 238

Ia, Ib, Ic 2 Phase CT
ISEF only. For
application on
isolated or
compensated
networks.
Phase
CT/VT CONFIG: Overcurrent
Phase Current SEF
Input
Phase CT Ratio Selects 1 or 5A
Earth Current CT ratio for
Input primary meters
Earth CT Ratio
Ia, Ib, Ic Phase
In Overcurrent
Ig Derived E/F
Measured
Standby E/F
CT/VT CONFIG: Selects 1 or 5A
Phase Current CT ratio for
Input primary meters
Phase CT Ratio
© 2018 Siemens Protection Devices Limited
3
2
1
6
5
4
9
8
7
12
11
10
A B C
Transformer Neutral
CT
Standby EF
S1
S2
3
2
1
6
5
4
12
11
10
A B C
7SR10 Installation Guide
1A
5A
IL1
1A
5A
IL2
1A
5A
IL3
1A
5A
ISEF
1A
5A
IL1
1A
5A
IL2
1A
9
5A
8
IL3
7
1A
5A
I4
Chapter 5 Page 10 of 13