Figure 6.1-2 7Sr224 Connections To Ohl Circuit With Core Balance Ct - Siemens 7SR224 Manual

L1 L2 L3
P1
S1
S2
P2
Core Balance CT
NOTES
1) CT circuits are shown connected to 1A tap – use alternative tap for 5A rated CTs.
2) CT and Earth connections are typical only.
3) Phase Voltage Config:-Van,Vbn,Vcn
4) Allocation of A,B,C phase references can be adjusted by user settings to suit
actual connections of L1, L2 & L3.
5) Bus voltage connections for optional Check Synchronising feature are not shown.

Figure 6.1-2 7SR224 Connections to OHL Circuit with Core Balance CT

©2010 Siemens Protection Devices Limited
1A
1
2 I
L1
5A
(I )
3
A
4
1A
5
6 I V
L2 L1
5A
(I ) (V
7
B A
8
V
1A
L2
9
(V
B
10 I
L3
5A
(I )
11
C
V
L3
12
(V
C
1A
13
I
V
14 4
4
(I /I )
5A
(V
G SEF
15
X
A
16
B
C
7SR224 Argus Installation
21
)
22
23
)
24
25
)
26
27
)
28
Chapter 5 Page 16 of 16