Table of Contents
Advertisement
Mav.31 2012
9:22AM
No,
1530
P
t0
MAINTENANCE
Page
47
EEPLACEMENT
OF
CLOSING
AND
TRIP
COILS
EFrFmilC-l
Do
nor
reprace
rhe crore
or
Trip
Goil yeith
th€
clrcult
breaker
ln
the
Connected or Test position. Turn
off
and lock
out
Maln and Control Circuit Power
beforg
$eMcing.
[IwAFillNGl
gon6rn,
thar rh6
circulr
breskar lndlcatore
ahow
"DISCHARGED"
(rvhitel and "OPEN' lgrEgn) b€fote servlclnl,
Tools Required:
PROCEDURE:
Ohm lneter
Phillios Scrswdriver
Sandpaper
Fio, B'l
lnepection
of
Coil
$troke
NOTEr
Replscement
of ths
clos€ and trip
coil ig by the $ame Procedure.
1)
Before beginning replacement
of
thB
coil.
confirm
th6
resistance
and
armalure
sttoke
of
tha
new
coil
is
correct by using Table 6. lf
a
mea$ured
value is dirfsrent trom
thal
listed in the
table, contact Toshiba
lnternational
Corp. for assistdnce,
Table
8.
Coil
RB5istsnc6 end
Armeture
Stroke
Rsmove
the front
panel
of the
citouit
breaker.
Rernove thE
rcraws
holding
the coil
in
place (Fig, 62).
Con{irm
that there i$
no dabrls in the
thr6ad6d holes
of the coil
baee.
Liohtly
rub
off
sny
oxidation
film
{Fig,
63} on ths
torminals
of the
coil
and
coil
base
with
a
fine
grit
$andpap€r. Do
not
rub excessively.
2}
3l
4l
5t
VOLTAGE
(Dc)
RESISTANCE
STBOKE
30
3,78o
a
5%
7mm
10,smm
48t60
7.?EQtSr,$
100/1 10
27.704
r
5%
125
38,50I} *
5s
200t220
126.2Of2*,5%
250
1
87.600
+
5%
Flg,
SZ
tlemov€ Scrawi
Hide quick links:
Advertisement
Table of Contents
