Siemens 7SR224 - Page 226

7SR224 Argus Installation
©2010 Siemens Protection Devices Limited Chapter 5 Page 16 of 16
S1
S2
P1
P2
L1
L2
L3
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.
I
L1
(I
A
)
1
2
5
6
9
10
13
14
A
21
22
23
24
25
26
27
28
1A
5A
1A
5A
1A
5A
1A
5A
15
16
11
12
3
4
7
8
B
C
V
4
(V
X
)
V
L3
(V
C
)
V
L2
(V
B
)
V
L1
(V
A
)
I
L2
(I
B
)
I
L3
(I
C
)
I
4
(I
G
/I
SEF
)
Core Balance CT
Figure 6.1-2 7SR224 Connections to OHL Circuit with Core Balance CT