Insulation Measurement - AEMC 6526 User Manual

2.3.2 Insulation Measurement

Insulation measurement results can be affected by the impedances of additional circuits connected in parallel or by
transient currents.
Do not start any measurement while the symbol
1. Set the rotary switch to one of the MΩ positions. The test voltage depends on the voltage of the installation to be
tested.
2. Use the leads to connect the system to be tested to the instrument's terminals. The system under test must
be powered down and discharged. When testing insulation, the typical connection is negative (black) lead to
conductor and positive (red) lead to ground or the outer insulation of the device under test.
3. (Optional) Press the
measurement.)
4. Press the TEST button and hold it down until the displayed measurement is stable. Note that if the instrument
detects a voltage greater than 25V in the system under test, pressing the TEST button has no effect because the
test will be prohibited.
5. The resistance measurement is displayed on the LCD's main display area and on the bar graph. The secondary
display area indicates the test voltage generated by the instrument.
18
1.800.561.8187
V
Ω
Ω
k
MR -
button to display the current or the elapsed time. (You can also do this during the
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is displayed.
Ω
M
OFF
50V
100V
250V
500V
1000V
Megohmmeter Model 6526/6532/6534
information@itm.com
.com
V DC