Trip Frae - Toshiba VK-6M32A Installation Operation & Maintenance

N1ay.
31
2012
9;
20AlV
No.
1530
P
28
OPERATION
Page
25
MECHANIgM OPERATIOITI
fAlmml|Fl
Do
not modify or ovedosd
thc
clrcult breaker operati
g
mechanism. Slow
clo:ure of the
broaker
could re5ult in
file
and
explo6ion.
A.
Closing
The condition shown in Fig. 40 repressnts
the condition whete
the oircuit breakst
ls
open and
the
closing spring
i$
charged
(ready for
cloringl.
ln this condition,
tha
closing catch
is
released by
the
closing
button
or
th8
closing
coil, the
closing
spring csuses
the
cam
lo
rotate
quickly
into the
condilion shown
in
Fig.
41
in
which the circuit breaker is closed.
B,
Charging
From
ths closed condition
ol
Fig.
41
only
the
closing cam is rotaled by
tha
motor,
with thB circuit breaker kept closed,
ufiil
the
roller on th6 cam sngages
with
the
catch.
Tripping
Wh6n thB trip Bhaft ig released by lhe trip
button
or the
trip coil,
dll
tha linke raturn
to
the
original open oondition shown
in
Fig.40.
Trip
Free
Whed
the trip crtch ls
r€lea3€d,
tho link
will
move
to the trip free condition
Shown
in Fig. 42. When rha charging operation
is
completed, the link wili
asBums
the
open
condition.
Fig.40
MechanismOpened
D.
Fig.41
MBchNniBm lmmEdiBtBly attef
Closing
by
Signal
Fig.42
MschNnism TriPPed
Free