Siemens 7SR12 Argus - Page 278

7SR11 & 7SR12 Installation Guide
Chapter 5 Page 26 of 32 ©2017 Siemens Protection Devices Limited
Current Input(s):
Ia, Ib, Ic
Isef
Phase
Overcurrent,
Derived E/F &
‘B’ Phase
Sensitive Power
1A
5A
Ig
A25
A26
A27
A28
Ic
Ib
1A
5A
A21
A22
A23
A24
1A
5A
A17
A18
A19
A20
Ia
1A
5A
A13
A14
A15
A16
A B C
S2 S1
P2 P1
Direction of power flow
In the forward (export) direction
1A
5A
Ig
A25
A26
A27
A28
Ic
Ib
1A
5A
A21
A22
A23
A24
1A
5A
A17
A18
A19
A20
Ia
1A
5A
A13
A14
A15
A16
A B C
S2 S1
P2 P1
Direction of power flow
In the forward direction
S2 S1
P2 P1
CT/VT CONFIG:
Phase Current
Input
Selects 1 or 5A
CT/VT CONFIG:
Phase CT Ratio
CT ratio for
primary meters
CT/VT CONFIG:
Earth Current
Input
Selects 1 or 5A for
Sensitive Power
input
CT/VT CONFIG:
Earth CT Ratio
CT ratio for
primary meters for
Sensitive Power
input