MI 2140 MI 2140 Omega &BetaPAT Instrument description
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Fig. 4.10 Good result example
Fig. 4.11 Bad result example
The test can be aborted with the STOP key at any time, but in such case there is no
PASS / FAIL decision.
Fig. 4.12 Indication of aborted measurement
Note:
• Consider any warning on the display (see Chapter 2.2) before starting
measurement.
4.3.2. Insulation test
The purpose of this test is to ensure that the insulation resistance between the live
conductors and the earth or metal parts of an appliance is within allowed limits. The test
voltage, resistance limit, duration of measurement and number of measurements are
selectable according to requirements.
Check to ensure that the appliance under test does not contain any over voltage
protection device, otherwise incorrect results could be obtained.
Insulation test of Class I appliances
For Class I appliances the test voltage is applied between the live pins (L and N are
shorted together in the tester) and the earth pin in an appliance mains plug.
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