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Q
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Table 4
.
Check Points for
Inspection
(
cont
.
)
(
O
CD
Check Point
Check Item
Criteria
No .
Check Method
What
to
do
Remarks
GO
4
*
4
Auxiliary
Switch
Tighten
with
screw driver
.
Terminals
There should be
no loose
screws
.
Retighten
.
Case and
contacts
Visual check
.
There should be no damage
nor deformation
.
Replace
when
damaged
.
Pg
.
45
5
Primary
Disconnects
Visual
check .
Discoloration
of
contact
surfaces by
heat
There should be a thin film
of Toshiba B 8 grease
on
the
contact
surface
.
There
must
be
no
discoloration
.
If
the
contact
surface
has no grease on it
,
apply
a small
amount
of Toshiba B 8 grease
.
Replace if the
contact
is
discolored
.
6
Control
Circuit
Closing and
tripping
electrically
Check
at
the Test
Position
or
out
of
cell using a
Toshiba auxiliary
test
cabinet
.
Check circuits
and
the closing and
tripping
devices
,
also
check the
microswitches and
fuses
.
The closing and tripping
operations can be done
smoothly
.
Secondary
(
Control
Circuit
)
Disconnects
7
Visual check
.
Insulation
portion
There should
be no
damage
.
Replace
if there is
any damage
.
Contact
surface
Visual
check
.
There should
be a thin film
of Toshiba B
8
grease on
the
contact
surface .
If
the
contact
surface
has no
grease on it
,
apply a
small
amount
of B 8 grease
.
Pg
.
10
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