3.2 Measuring Insulation Resistance
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3.2 Measuring Insulation
Resistance
Observe the following to avoid electric
shock and short circuits.
A. Do not use the
tester if the shutter
is broken.
B. Check Table 1
before connecting test leads to the tester.
C. Check to see if the object under test is not
live or electrically charged using a high-volt-
age detector or other similar instrument,
before connecting test leads to it.
Table 1
Check item Result Action
Are the mark
and key lamp
off?
Off Connect test leads to the tester
and check C. above. If safe to
proceed, connect the test leads
to the object under test.
Go to Table 2.
Blinking Press the key to stop
voltage generation.
Table 2
Check item Result Action
Are the mark
and key lamp
blinking?
Not blinking Measurement may be com-
menced
Blinking Immediately disconnect the
test leads from the object un-
der test and turn off power to
the object or discharge the
electric charge using a dis-
charge rod.
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