Appendix
LS3
22
21
52Y
52b
52Y
42
41
52
A2
Y
A1
71
72
32
31
A2
34
33
52
T
A1
63
64
83 82
84 81
93
94
22
21
32
31
LS9
13
14
52Y
14
13
52a 52b 52a 52b 52a
52b 52a
A2
A1
SRC
52
XO D16
88
XO A1
A2XO
B2XO
D7XO
XO C7
D2XO
52a
23
24
C2XO
LS21
21
22
LS22
22
21
34
AC2
AC1
12
(+) (-)
B7XO
LS41
14
13
A7XO
C9XO
D9XO XO
73
74
XO
D10
52a
C10
XO B10
XO A10 XO C11
XO D11
A11
XO
B11XO
C12
XO
D12XO B12
A12
52b
XO
91
92
XO
V3
2
69
1
(Y)
(X)
42
41
54
53
13
14 10
2
1
08M
10 A
12
3
08M
10 A
4
5
6
46
35
52
51
56 58
55
57
60
59
R
G R
R
52a and 52b spare contacts (standard)
01
T
21
(+)
(-)
22
7
23
R
W
01
C
63 4
15 A
08
15
08
2
15 A
11
31
12
32
16
15
62
61
9
DC
power
supply supply
power
AC
Protective relays
A15XO
73
52b
121
122
71
C15XO
52a
124
123
B15XO
74
D15XO
72
69
XO
111
112
67
XOA13
114
113
52b
52a
C14
XO
70
XOB13
68
D14
52b
A14
B14
XOC13
101
102
52a
XO
104
103
63
XOD13XO
64 66
65
52a and 52b spare contacts (optional)
Figure 9: Typical control schematic
Legend
01/C Control switch close (remote)
01/T Control switch trip (remote)
08 Close and trip power disconnect
08M Motor power disconnect
52a Auxiliary switch, open when circuit
breaker is open
52b Auxiliary switch, closed when
circuit breaker is closed
52SRC Closing spring release coil
52T Opening spring release coil
52Y Anti-pump relay
69 Closing cutout switch
88 Spring charge motor
G Green indicating light (remote)
R Red indicating light (remote)
LS3 Closing spring position switch, closed
when closing spring is discharged
LS9 Closing spring position switch, open
when closing spring is discharged
LS21 Motor cutoff switch, closed when
closing spring is discharged
LS22 Motor cutoff switch, closed when
closing spring is discharged
LS41 Closing spring position switch, open
open when closing spring is
discharged
W White indicating light (remote)
XO Plug connector (operator
connections)
Schematic shown
with closing springs
discharged and
circuit breaker open.
41
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