Toshiba VK-6M32A Installation Operation & Maintenance page 57

May
31. 2012
9:24AM
No.
1530
0
(0
CONVERSIONS
Page 55
(a)
The breaker
truck'3
components and all of the safety interlocks on tho truck 8nd the
Toshiba vBcuum
cilcuit
breaker cornponant
tunctions properly as originally de3ign6d;
and
(b)
Th6 opBning and closing
of the Toshiba vacuum circuit
breaker componedt results
in
propei operition of
all
enarnal switches
installed on
the
breaker
component, truck and
cubicle; and
(c)
The Operdtion
of
extBrnal
switchas and
mechanicSl interlocks doB3
not Efioct
the
opening
and
closing ottheToshiha vacuum circuit breaker component' Broeksropaning
and ctJsing rim6s must be in accodance
with tha
specifications desclibed in this
mdnual (Pg. 20
).
6,
ToShibA vACUum
Circuii brBak6rs
must be opBlsted Only
in
accotdEnce
with the wlitten
instructions contained in this manual'
|IWm[iFG]
Foiluro
to
camply urlth thcse safety
procedur6a can
cauee
flre
and explosion,
reauldng ln eevere iniu?y. death and property damag6'
AUTOMATIC $PRING
DISCHARGE
Automatic Spring Discharge
iB
th3 discharging of the Dlosing spring
without first closing the circuit
breaker. The Tos-hiba
circult
breakers
ln
thiS m;nual ate designed
and
intended for only Manual $prlng
Dischatga, snd only by tha following procedure.
1)
Oisconnsct the conirol circuit power,
2)
Dsprass
the
*Trlp
Button'
{red},
lollowed
by the
'clo3ing
Eutton"
(green) and
then d6pre3s
the "Trip Button"
(red) onc6 again.
lf tho circuit breaker that
k
being convertBd utilizes
the automatic
sprlng discharge
to
discharge
the
cloaing spring
upon,
oither
the
insenion or withdrawal of the
circuit
breaker
into or out of
tha
csll,
tne
discbnnEor Poshion,
ths Tegt
Position
ol the
Connectgd Poshion'
it
is tecommended that the
design of the
citcuit
br€aker
truck snd cell
be modified in a mann€r
that will requits
Manual Spting
Dilchirg.
only.
It Autometlc spdng EHlchErse cannot be avoided, thE lollourlng
b
sttongly
redommende{l:
(a) A counter b6 installed
to
monitor
ths number
ol Auromaiic
Spring Discherge opgrations; or
A recotd
be
msintained
as
to the number of Automatic Spring Discharge operations thal hdve
been perlormed; and
(b) Maintenance should ba par{ormad on the
closing $pring chalging gears after every
100
Automatic Spring Discharge op€ration3'
Not3:
F8ilure
to pertorm mainte
anoe on
th€ closing spring charging
geats can rgsuh in thB
inabilily
to
charga ih6 closing springs, This
witl rendsr ths circuit
breaker inoperable (unable
to close)'
Maintenanc€
ol
ths closing spring charging gears should
b€
parformsd only
by
Toshiba lnternational
corporation only. consult Toshiba lnternationsl corpolation for further intormation.