Toshiba HV6FS Instruction Manual page 33

MAINTENANCE
Table 2. Check Points for Inspection (cont'd)
Check Point Check Item
Auxiliary Terminals loose
Switch or disconnected
Case/contacts
Control Smooth
Circuits movement of
motor charging
mechanism
Terminals loose
or disconnected
Insulation Measure main
Resistance circuit to ground
Measure-
ment
Measure
between main
circuit terminals
Measure control
circuits to
ground
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Check Method
Visual Make sure terminals are
not loose or disconnected.
inspection.
Tighten using a
screwdriver.
Visual Make sure there is no
inspection. damage or warping.
Energize the Breaker (motor-operated
control circuit. type) should charge
quickly and smoothly.
Make sure terminals are
Visual
inspection. not loose or disconnected.
Tighten using a
screwdriver.
Megger test at Resistance should be
1000V.
500MΩ or greater.
Megger test at Resistance should be
1000V.
100MΩ or greater.
Megger test at Resistance should be
500V.
2MΩ or greater.
Criteria
Repair if
disconnected. Tighten
if loose. See
Table 1 for tightening
torques.
Replace if damaged
or warped.
If the circuit fails to
operate, check the
cause and repair.
Table 1 for
tightening torques.
If the insulation
resistance is low,
wipe off the vacuum
interrupter and other
insulation surfaces
with a clean dry
cloth and then
repeat the test.
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What to do
Repair if
disconnected.
Tighten if loose.
See