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Schematic
Figure 16: Typical ground and test device schematic
Legend:
l
88 - Spring charging motor
l
52SRC - Spring release coil (close)
l
52T - Shunt trip coil (trip)
l
52Y - Closing relay (anti-pump)
l
LS3 - Spring-charge switch (open when
spring is charged)
l
LS5, LS6 - Blocks electrical operation
between TEST and CONNECT positions
l
LS9 - Spring-charge switch (closed when
spring is charged)
l
LS21, LS22 - Spring-charge position switch
(cutoff motor after spring charge)
l
SD - Secondary disconnect
l
R - Twist lock receptacle
l
AS/52a - Auxiliary switch (open when
ground and test device is open)
l
AS/52b - Auxiliary switch (closed when
ground and test device is open)
l
TS/C - Selector switch (close)
(non-spring return)
l
TS/T - Selector switch (trip)
(non-spring return)
l
PB/C - Pushbutton (close)
l
PB/T - Pushbutton (trip).
Schematic shown with:
l
Closing springs discharged
l
Ground and test device open
l
Ground and test device located in
DISCONNECT, TEST or CONNECT position.
4/C cable
(+)
16
SD
5
LS5 5A
LS6
22
21
22
A7
XO
PW1
A7
13
21
LS41
LS21
22
14
Blue
88
Motor
Green
125 Vdc
22
supply
LS22
21
CC5
43
52Y
44
CC2
B7
B7
XO
6
SD
15
(-)
PB/
Pushbutton enclosure
C
PB/
T
White
Red
Receptacle plug
Ground and test device mounted receptacle
W
R
X
R
C
PW
21
A1
XO
A2
XO
C1
11
TS
C
18
C2
41
14
21
52Y
52b
LS3
42
13
22
C4
C3
A1
A1
52Y
52SRC
A2
A2
CC3
13
LS9
14
51
52b
52
CC1
14
TS
C
15
CC
B2
XO
6
Coils
Motor
Close
Trip
Green
Black
Y
R
G
R
T
C7
XO
C2
XO
T1
12
TS
T
13
C7
T2
23
31
52a
52b
24
32
T3
A1
52T
A2
TC2
34
52a
33
TC1
16
TS
T
17
D7
TC
D7
XO
D2
XO
Supply
>125 Vdc
47
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