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Siemens GMSG-GCB Instruction Manual page 25

5 kv to 15 kv vacuum circuit breakers

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TF
1
CF
(+)
1
2
W
XO
XO
(SD)
(SD)
3
16
LS21
(S21)
88
DC power
(M1)
supply
MOTOR
13
LS41
(S41)
14
XO
(SD)
15
CF
3
4
TF
3
(-)
2
CS
C
XO
(SD)
13
11
21
52b
(S1)
12
22
22
21
13
52Y
52Y
21
(K1)
(K1)
22
14
31
52Y
A1
(K1)
32
A1
A1
52SRC
D2
(Y9)
CLOSE
A2
A2
21
13
LS12
LS22
(S12)
(S22)
22
14
13
13
LS13
LS8
(S13)
S8)
14
14
13
LS9
(S9)
14
4
XO
XO
XO
(SD)
(SD)
(SD)
11
9
7
63
61
53
52a
52b
(S1)
(S1)
64
62
54
XO
XO
XO
(SD)
(SD)
(SD)
12
10
8
13
21
41
52a
52b
52b
(S1)
(S1)
(S1)
14
22
42
Not wired
CS
G
R
T
XO
XO
(SD)
(SD)
1
4
LS3
(S3)
23
52a
(S1)
24
A1
52T
31
52Y
52b
(Y1)
(K1)
(S1)
32
TRIP
A2
33
52a
(S1)
34
XO
XO
(SD)
(SD)
14
2
XO
(SD)
5
51
52a
52b
(S1)
(S1)
52
XO
(SD)
6
43
52a
(S1)
44
Figure 18: Typical elementary diagram
88 (M1) - Spring-charging motor
52a (S1) - Auxiliary switch is open when circuit
breaker is open
52b (S1) - Auxiliary switch is closed when circuit
breaker is open
LS3 (S3) - Anti-pump circuit is open when closing
spring is charged
LS8 (S8) - Open close circuit when trip button is
depressed
LS9 (S9) - Closing spring position switch is open
when closing spring is discharged
LS12 (S12) - Opens close circuit when circuit
breaker is in transit
LS13 (S13) - Opens motor circuit when circuit
breaker is in transit
LS21, LS22 (S21, S22) - Position switch (cut-off
motor after spring charge)
LS41 (S41) - Closing spring position switch is open
when closing spring is discharged
52SRC (Y9) - Spring-release coil (CLOSE)
52T (Y1) - Shunt trip coil
52Y (K1) - Closing relay (anti-pump)
XO (SD) - Secondary disconnect
G - Green indicating light (TRIP)
LS - Spring-charged switch
CF - Circuit breakerr control fuse (CLOSE)
TF - Circuit breaker control fuse (TRIP)
MF - Circuit breaker control fuse (MOTOR)
CS/C - Control switch (CLOSE)
CS/T - Control switch (TRIP)
R - Red indicating light (CLOSED)
W - White indicating light (spring-charged).
Standard:
Shown with closing springs discharged, circuit
breaker open, circuit breaker located in disconnect,
test or connect position.
All wires are #14AWG SIS unless otherwise noted.
25

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