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