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Page 14
R
S
U
V
T4
Tripping
Supply
DC
T3
T2
Diode
T1
Figure 7 – Internal connection of the latched type
Re mo t e
OF F
Op e r a t i o n
S w i t c h
OF F
O N
CR
S t a r t
I n t e r l o c k
S t o p
I n t e r l o c k
Dr S
( Do o r Sw i t c h )
2 E ( O v e r l o a d )
CR
Figure 8 – Standard operation circuit of the normally energized type
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T
Vacuum Bottles
W
52
52
CC
CC
5
6
Drive Unit
1
2
A 1
A2
Closing Supply
AC/DC
CR
CR
O N
A 1
L o c a l
R e mo t e
D r i v e
Un i t
A 2
16
15
14
13
26
25
24
52
A uxiliary
TC
Switch
1 6
1 5
1 4
Auxi l i ar y
Swi t c h
T 1
2 6
2 5
2 4
5 2
5 2
C C
C C
G L
T 2
OPERATION
LEGEND
52 CC ..... Closing Coil
52 TC ...... Tripping Coil
T1, T4 ...... Terminal Block
A1, A2 ..... Closing Supply
AC/DC
12
11
23
22 21
LEGEND
52 CC .... Closing Coil
T1, T2 ..... Terminal Block
GL ......... Green Light
RL ......... Red Light
A1, A2...... Closing Supply
V C T T
CR......... Control Relay
1 3
1 2
1 1
2 3
2 2
2 1
RL
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