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4.1
Safety Check (Voltage Test)
WARNING: MAKE SURE THE JACKS ARE FIRMLY INSERTED
INTO THE TOP OF THE MEGOHMMETER PRIOR TO PERFORM-
ING ANY ELECTRICAL TESTS!
Before measuring insulation resistance, confirm that the sample is fully
discharged (particularly in dielectric and capacitance samples), and that
the sample is not connected to an energized circuit.
To perform the voltage test:
• Set the range selection to MΩ 500V or MΩ 1000V (Model 1015 only)
• Connect and read on the voltage scale (600V
You do not need to press the yellow button to measure voltage.
NOTE: If measuring voltage on a DC circuit, the pointer will deflect
but the measurement may be inaccurate.
4.2
Insulation Resistance Testing (MΩ Range)
After checking for a live circuit (see Safety Check above), connect the
megohmmeter.
Several connection examples are illustrated in Figures 3 through 10.
4.2.1
Test Voltage
No published standard tells which voltage to choose for any given winding.
However, published recommendations could be summarized as follows:
Quality AEMC Products Online at:
Megohmmeter Models 1005 and 1015
OPERATION
Rated Voltage of Motor
Below 115
115
230
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CHAPTER 4
Test Voltage
250V or 500V
500V or 1000V
max)
AC
250V
500V
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