Operation - Megger BM100/4 Gebrauchsanleitung

Preliminary Test lead check
1.
2.
3.
4.
Continuity Testing
1.
2.
3.
4.
Insulation Testing
1.
2.
3.
4.
5.
6.
7.
Resistance Testing (BM101/4 only)
1.
2.
3.
4.
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Refer to Safety Warnings before using the instrument
Before each use of the instrument, inspect the test leads to confirm that
their condition is good, with no damaged or broken insulation.
Insert the red and black test leads, terminated with the appropriate
prods or clips, to their respective '+' and '-' terminal sockets.
Short the test lead prods or clips together. Set the selector switch to '2 ' .
Press the 'Test' push. Check that the instrument reads zero. If a higher
resistance reading is obtained check all connections. If the reading
remains high, suspect that the test leads may be at fault, or that the 2A
non replaceable fuse has ruptured.
Set the selector switch to '2
Connect the test leads across the isolated item / circuit under test.
Press and hold the 'Test' push button; allow the needle to settle. There
is a separate scale for each range so each reading is direct. Take the
reading from the appropriate scale of the instrument.
Release the 'Test' push button and disconnect the test leads.
Set the selector switch to '200 MΩ.'
Connect the R e d test lead to earth, equipment frame, or cable sheath etc.
Connect the Black test lead to the circuit under test or cable core.
Confirm that Voltage is not indicated on the instrument. (BM100/4
only)
Press and hold the 'Test' push; allow needle to settle, and take the
reading from the top scale of the instrument.
Release the 'Test' push button.
Wait a few moments before disconnecting the test leads, to allow any
circuit capacitance to discharge. The BM100/4 will automatically
monitor the discharge on its Voltage range, indicating when it is safe to
remove the test leads.
Set the selector switch to the 1MΩ resistance range.
Connect the test leads across the isolated item / circuit under test.
Press and hold the 'Test' push button, allow the needle to settle. Take
the reading from the 1MΩ range scale.
Release the 'Test' push button and disconnect the test leads.
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OPERATION

', or '200 ', as appropriate.