Megger MIT30, Инструкция по эксплуатации

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OPERATION
AVTMMIT30-EN Rev E02 June 2009
21
WARNING
Use an external safety
grounding/discharge rod or “hot
stick” to prove that the system has
been de-energized prior to handling.
12. Apply safety grounds to the apparatus
13. If desired, disconnect the HV clip from the
apparatus
Notes:

If cable interlock LED is illuminated, check the cable
connections

Connect the guard terminal to bypass any undesired
currents (see the following paragraphs regarding use of
the guard terminal.

If the guard terminal is connected alone no current will
be displayed

If during the test the over current trip is triggered, you
must first reset the HV by rotating the voltage control
knob to zero, and then pressing the over current reset
button.
USE OF GUARD
Occasionally when measuring apparatus, the
leakage resistance of interest is masked by a
parallel path. Such a situation is often
encountered when measuring the leakage current
of a cable. In the practical situation, the value of