Westinghouse DB-15 Instructions Manual page 11

BOT.
AUX.SW.
WIRING DIAGRAM (F.V.) FIXED PANEL
OPERATION SEQUENCE
I. CONTROL SW. CS-C CLOSED.
2. "X" REL AY PICKS UP a SEALS IN THRU AUX.
CONTACT "x":
3. CLOSING COIL ENERGIZED THRU "X" CON­
TACT CLOSING BREAKER.
4. IN CLOSING BKR. CLOSING MECH. MECHANIC­
ALLY TRIPS "X" CONTACTS FREE OF "X" COIL,
INTERRUPTING CLOSING CIRCUITS.
5. WITH BKR. IN CLOSED POSITION, THE BKR.
CLOSING MECH. IS L ATCHED UP AND "X" CON­
TACTS REMAIN TRIP FREE FROM "X" COIL.
6. WHEN BKR.IS TRIPPED, CLOSING MECH.
DROPS, PERMITTING " X" CONTACTS TO RE­
SET PROV IDED "X"COIL IS DEENERG IZED.
L.. - - .J
125 V,D·C
250 V,D-C
120 V,A·C
240 V,A·C
480 V,A·C
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SCHEMATIC
LEGEND
£:.-ALARM CONTACT
X-CONTROL RELAY DOES NOT CLOS E
WHEN BRE A K ER IS
CC -CLOSI N G COIL
TRIPPED MAN UALLY
TC -TRI P COl L
CS-CONTROL SW ITCH OR BY THE SHUNT
TRIP.
R-RED LAMP (CLOSED)
G- GREEN LAMP{OPEN)
*-CURRENT LIMITING
U V-UNDERVOLTAGE
RESISTORS a FUSES
L O-LOCKOUT
TO BE USED ONLY
B A- ALARM SWITCH
WHEN A-C CONTROL
a-MAKE CONTACT
SOURCE IS FROM SWGR.
b-BREAK CONTACT
B US.
FIG. 4. Typical Wiring Diagrams-Type "DB" Circuit Breaker
�T
cs
O cs
T
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SHUNT TRIP
WIRING DIAGRAM (F.V.)
REV ERSE CURRENT
,-
...
\
1
I
r-- -- -- -,
I
'1' h
:/. �
1,_
,-FL-,
I
N
7
WIRING DIAGRAM {F.V.)
UNDERVOLTAGE
, -
.... . ...
,_,�
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l_
8 P 0 I N T ---- -.:.r: :-=- --:r-:h
TERM. BLK.
REAR CONN .
OFT. BLK.
WIRING DIAGRAM {F.V.)
ELEC. RESET ALARM SWITCH
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WIRING DIAGRAM {F.V.)
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1
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i-0 1 �-� 1 1
---- ----
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1
RC
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SCHEMATIC
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SCHEMATIC
11