7SR10 Installation Guide
© 2018 Siemens Protection Devices Limited
Chapter 5 Page 9 of 13
Ia, Ib, Ic
In
Ig
CT/VT CONFIG:
Phase Current
Input
Phase CT Ratio
Earth Current
Input
Earth CT Ratio
50/51 - Phase
Overcurrent
50N/51N -
Derived E/F
50G/51G -
Measured E/F
Selects 1 or 5A
CT ratio for
primary meters
IL4
IL3
IL2
IL1
A B C
S
2
S
1
D
irec
tio
n o
f p
ow
er
fl
ow
In t
he
for
w
ar
d di
rec
tio
n
1A
5A
3
2
1
1A
5A
6
5
4
1A
5A
9
8
7
1A
5A
12
11
10
P
1
P
2
IL3
IL2
IL1
A B C
S
2
S
1
D
irec
tio
n o
f p
ow
er
fl
ow
In t
he
for
w
ar
d di
rec
tio
n
1A
5A
3
2
1
1A
5A
6
5
4
1A
5A
9
8
7
P
1
P
2
P
1
P
2
S1
S
2
IL4
1A
5A
12
11
10
Содержание 7SR10 Argus Series
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