Typical Connection: 7Sr22 Connected To Vts And Capacitor Cone Unit; Figure 7.6-1 7Sr22 Applied To Feeder With Capacitor Cones Fitted - Siemens 7SR210 Installation Manual

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7SR21 & 7SR22 - Installation Guide
7.6
Typical Connection: 7SR22 Connected to VTs and
Capacitor Cone Unit
L1
L2
L3
P1
S1
S2
P2
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) Vee Connected VT: Phase Voltage Config:-Va,Vb,Vc
4) DEF elements must be NPS polarised (Vo polarising not applicable)
5) V

Figure 7.6-1 7SR22 Applied to Feeder with Capacitor Cones Fitted

Page 24 of 24
1A
1
2
5A
3
4
1A
5
6
5A
7
8
1A
9
10
5A
11
12
1A
13
14
5A
15
16
A
B
C
Capacitor
Cones
Adaptor
Unit
used for NVD input
4
1A
17
I
I
L1
5
5A
(I
)
(I
)
A
SEF
I
V
L2
L1
(I
)
(V
)
B
A
V
L2
(V
)
B
I
L3
(I
)
C
V
L3
(V
)
C
V
I
4
27
4
(V
)
(I
)
X
G
28
A
B
C
©2011 Siemens Protection Devices Limited
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