Siemens 7SR12 Argus - Current Transformer Configurations

7SR11 & 7SR12 Installation Guide
©2017 Siemens Protection Devices Limited Chapter 5 Page 21 of 32
5.9 Current Transformer Configurations
Relay Current
Configuration
Setting
Description
Connection
In
50G/51G -
Measured E/F
1A
5A
I
A25
A26
A27
A28
A B C
S2 S1
P2 P1
Direction of power flow
In the forward direction
ISEF
50SEF/51SEF -
Measured
Sensitive E/F
1A
5A
ISEF
A
25
A26
A27
A28
A B C
S2 S1
P
2 P1
Direction of power flow
In the forward direction
1A
5A
ISEF
A25
A26
A27
A28
A B C
P2 P1
Direction of power flow
In the forward direction
S2 S1
IREF
64H – Measured
Restricted E/F
1A
5A
I
A25
A26
A27
A28
A B C
S2 S1
P2 P1
Direction of power flow
In the forward direction
S1 S2