Westinghouse DB-50 Instruction Book page 9

FIG
.
1
fljTr
T
CONNECTION DIAGRAM (
EV
.
)
]
% ;
COFN
^ BUC
FIG
.
10
FIXED PANEL SHUNT TRIP
.
|
.
„
r r '
r
m
T P
3
* 0
»
A
-
ALARM CONTACT DOES
NOT CLOSE WHEN
BREAKER
1 S
TRIPPED
MANUALLY
OR
BY THE
SHUNT
TRIP
t
\
W
;
)
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3
i I (
TCJ
SF
i
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-
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4
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C
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l
r i 4 l
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11
T O P
'
*
" TN
—
y
—
J
^
5
*
-
CURRENT LIMITING
RESISTORS S
FUSES
TO
BE
USED ONLY
WHEN CONTROL
SOURCE 15 FROM
SWGR .
BUS
.
AUX
i
TSi
-
L sw
§
fLO
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VTy
SCHEMATIC
CONNECTION
lMA 6 ftAM CF -
V
.
)
S
-
G
i
gift
BOT
1
AUX :
SW
.
Fid
.
11
RKyERSE
.
CUBBENT
>
x
4
-
r
—
;
> r
" I
or
L
\ POTENTIAL
COIL
.
3
»
p
COIL
WTEMTIAI
I COIL
.
I
OPERATION SEQUENCE
1
. CONTROL
SWITCH
C
.
S
.
-
C
CLOSED
.
2
.
* X * RELAY
PICKS UP 5 SEALS IN THRU AUX . CONTACTX
*
3 | 400 aRE 5 .
3
.
CLOSING COIL ENERGIZED THRU
^
" CONTACT
CLOSING BREAKER
.
4
-
.
IN CLOSING BKR
.
CLOSING MECH
-
M
ECH AN ICALLY TRIPS " X "
CONTACTS FREE OF ' X '
COIL
,
INTERRUPTING CLOSING CIRCUITS
.
5 . WITH BKR
.
IN CLOSED POSITION
,
THE
BKR . CLOSING MECH
.
IS
LATCHED UP AND " X " CONTACTS REMAIN TRIP FREE FROM
'
XTQIl
6
.
WHEN BKR .
I 5 TRIPPED CLOSING MECH
.
DROPS PERMITTING
'
X
"
CONTACTS
TO
RESET PROVIDED
' * '
COIL
IS DE
-
ENERGIZED
.
s
- twins
SCHEMATIC
eaSA
L
_
ifiJ
4
—
4
SCHEMATIC
.
at
CON
jWcTfQKI
-
pLABK
^
U
TCT
FIG .
i
> .
DjC
.
UNpERVQl
.
TAGE
9
r f f
©
7
rG
TP
ffCJ
.
X
FUSE
*
LEGEHD
Xr CONTROL RELAY
.
CC
-
CLOSING COIL .
TC
-
TRIP COIL
.
C 5
-
CONTROL SWITCH
. ,
7 c V t
)
r
^ BWSSS 8
W
^
4
#
-
&
*
@
*
1 ±
cs
C
CS
.
g
% 8
cm
CTO
SCHEMATIC
uw
CONNECTION DIAGRAM
o
CO
T
R -
1
>
3
* Fb
U
.
VrUNDERVOLTAGE
.
L
.
O
.
-
LOCKOUT
.
A
.
S
.
-
ALARM SWITCH
a
-
WAKE CONTACT
*
b
-
BREAK
CONT
.
-
LZZ
}
JC
FIG
.
12
ALARM
.
A
-
FOR
~
|
A
-
5
.
OPER
.
SEE
I
NOTE A
| PAGE 1
.
ELEC . PESET ALARM SW
.
V
|
)
|
rfm
>
> 4
-
TP
7 » a
XMCCJ
J
£
—
I 5
-
I
*
v
l
TN
CJ
bf
=
3
?
J
TN
.
_
'
~
* ~
s ATI
C
.
I
PAGE
1
AS
.
Hqp 1
1
CONTROL
VOLTAGES I
25
-
250 V
- D
.
C
.
|
3 j - A
~
28
G 1
.
CONNECTION DIAGRAM
.
^ F
-
V
.
7
m
5 * 5
m
co
Fig
.
2
—
Typical Wiring Diagrams
—
Type DB
- 50 Circuit Breaker