Megohm meter

[stoopidquestion]

can any one tell me why should a '
megaohm meter NOT be used on some hermetic compressor motor winding?


is it something to the winding
insulation

[lowcool]

yes
yes
no

[NoNickName]

There is no reason. Windings are able to withstand a testing voltage of at least twice the operating voltage.
We test the compressor windings at 1750 volts.

[Yuri B.]

We only should not use megohmeter when the compressor is in VACUUM. (then winding insulation will be for sure disrupted)