Fluke 1507 Motor Insulation and low ohm Testing

May 2020:
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Testing the insulation Megging and Low Ohm testing windings on a old three phase Siemens electric motor Fluke 1507 Insulation Tester aka, Megger.
This Motor got too low readings on the insulation test and need to be refurbished.
The readings should be at min. 1G ohm, but a good motor reads 5G ohms plus. And the readings should be more constant and not climb in value this slow ( as shown on my video).
And note, the one minute test and ten minute test should be subtracted and NOT divided!! :)
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Видео Fluke 1507 Motor Insulation and low ohm Testing канала LUNORTEK