Siemens SDV-4A Instruction Manual page 21

Interrupter/Operator Description
LS1 Motor Cutoff
LS2 Spring Charged
LS3 Trip Latch Check
52a Aux Switch, Open When Bkr OPEN
52b Aux Switch, Closed When Bkr OPEN
52 SRC Closing, Spring Release Coil
52T Trip
52Y Anti Pump
15
TPX 12
11
52
a
12
TPX 11
16
(+)
DC AC
Power
Power
Supply
Supply
(-)
Figure 20a. AC and DC Control Power (Reclosing).
52 a & b Spare Contacts
51 53 55
TPX 16 TPX 18 TPX 20 TPX
15 17 21 23
52 52 52
a b a
16 18 22 24
TPX 15 TPX 17 TPX 19
TPX
52 54 56
31
08T
21
1 5 2
15A
11
08
1
3
1 5 2
10A
TPX 3
1
88
2
TPX
NO
LS1
C
08 TPX 2
2
4
3 6 4
10A
12
08T
22
3 4
15A
32
LEGEND
08 Motor Power Disconnect
08T Close & Trip Power Disconnect
69 Closing Cutout Switch
88 Motor
TPX Terminal Block
01/C Control Switch Close (Remote)
01/T Control Switch Trip (Remote)
G Green Light (Remote)
R Red Light (Remote)
W White Indicating Light (Remote)
Notes on Schematic Arrangement
Schematics are shown with:
57 59 61
1. Closing Springs Discharged
22 TPX 24 TPX 26
2. Breaker Open
25 27
52 52 52
Note that, in this condition, the trip
b a b
26 28
latch is free to reset, but is tempo-
21 TPX 23 TPX 25
rarily blocked until the closing springs
are partially recharged. Prior to full
58 60 62
spring charge, LS3 (NO) closes, and
LS3 (NC) opens.
41
5
01
C
7
1
69
2
TPX 4
3
52b
4
21
52Y
22
R
W
32
52Y
31
1
23
52
SRC
1
2
NC
LS1
NO
C
LS3
C
NC NO
LS2
C C
TPX 5
6
42
1 1
R R
01
G
R
2 2
A1
52
Y
A2
9
TPX 7
1
52
a
2
14
52Y
13
1
LS2 52
T
13
2
TPX 9
7 6
52 52
b a
8 5
TPX 10 TPX 8
14 10
T
19