3.2 Measuring Insulation Resistance
68
10. Read the indication.
• If the indication is unstable, press the
key. The average of the mea-
surements is shown.
See "Average function" (page 69).
• Resistance indication is switched to
leakage current indication by pressing
the key.
See 3.2.5 "Switching to Leakage Current
Indication" (page 74).
• When the timer has been set, remain-
ing time is displayed.
See 4.1 "Using Timer" (page 85).
Do not allow test leads to contact each other
or place objects on test leads, to avoid mea-
surement errors and malfunctions.
• Be sure to clean test leads after use. If test
leads are soiled, they may deteriorate.
• Insulation resistance is unstable. The
indication may not stabilize with some
objects.
• Due to factors such as capacitance of
objects under test, resistance values may
start low, then rise gradually and settle out.
• During measurement, if the resistance of
the object suddenly drops or if the test
lead tips are short-circuited, the
instrument stops voltage generation as a
safety measure. (This applies to a test
voltage of 1.1 kV or more.)
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