Toshiba VK-6M32A Installation Operation & Maintenance page 38

Nlav
ll
2012
9:2lAM
No
1530
P
39
Page
36
MAINTENANCE
wlPE
MEASUBEMEIVT
when the clrcuit bloaker
is closed.
pres.Bwe
on
the
maln comact$ inside
the
vaouum
interrupter
iE
maimained by a set
of
springs.
As the
mein contacts inside
the
vacuum
interruptet wear, the amount of wipe
on the
springs decrcases. Wipe
is
used
to
measule
cofttact w€ar and maimain
contact
prsasure.
The docrea$e in
wipe
i$ also u$ed
to det€rmin€
whsh
to
replace
the
vacuum bottle due to
wsar of th6 contactg,
iAmfq
J{6v61
use
a
crrcuh
breaker
wlth insufficient uripe. lnsufficient
wha will
cEuas
poor cor*act prcrsute and can ru$ult in
firi.
arplosion, ewere lnlury, daath
and
p.opeity d6mage.
EWAsllG]
rvau.r
aqu$
the
wrpe
of
a
vacuurn
i
terrupter- lmpropsl edjusrrnent
of
the wlp€ can rcsult in
fte,
explo6ion, Sevele
iniury, daadl end Flop€rty damag€,
For:
6M32A
1OM25A2
6P32A
r0P25A2
5M40A
l0M40A
6P40A
10P40A
8M4OA
8P4OA
Wirh th6 circuit breaker closed,
visually check
the wipe mark (redl
ae
shown in Fig. 46. Tho
irnerrupter mu€t be replaoed when tho wlpo
mark ia no longer visible.
an'n t
FLrLL tt
I
P=l
I3-
MAtrK
t
R=Dl
FiS.
46
wipe
lnspection
PLATE
r-lmm C;ULL
wlPE)
fig,
47
Wipe ln6pecdon
For:
5M50
6P50
6050
8040
10040
r0Mso
10P50
10050
With
ths
circuit
breakar clos6d, measure the
wipe
as
shown in Fig.
47. Ths lnterrupter mu8t
b6
roplac€d
when
the
bldck extends 1mm
below
the
plat6.
.
All
servicing
and
replacemem
of
vacuum
interrupters should
bg
done
by
Toshiba
lnternational Corporation, Consult the factory
for further
details.