MegOhmMeter
Making Measurements
15
To perform an insulation test use the following procedure:
1. With the Meter turned on, set the available measurement options to meet
your test requirements. These include:
• Test Voltage – Set range: 250V to 5000 V (50 V/100 V steps)
• Ramp Test – Toggle on or off
• Time Limit – No limit or from 1 to 99 minutes
2. Connect the probes to the circuit you want to test.
XW Warning
To avoid possible electric shock or personal injury: before and after
testing, confirm that the Meter does not indicate the presence of a
hazardous voltage at the terminals. If the Meter beeps continuously
and a hazardous voltage is shown on the display, disconnect test
leads and remove power from the circuit under test.
3. Press the T button for 1 second to start the insulation test.
The Meter beeps 3 times as the test begins, and the
W icon flashes on the
display indicating potentially hazardous voltages may be present on the
test terminals.
00k
0
0M
G
V
0G
T
00G
G
00M
M
000V 500V 250V
5000V 2500V
Bar Graph
Digital Main
Display
ASW08F.EPS
The digital display indicates the measured insulation resistance after the
circuit has stabilized. The bar graph displays this value continuously (in
real time) as a trend.
Any of the following conditions will terminate an insulation test:
• User stop (Pressing the
T button).
• Timer limit reached
• Interference on the test circuit
• Breakdown occurs with ramp test enabled
•
Battery depleted
If breakdown occurs with ramp test enabled, press the e button before
going to step 4.
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