How to test 3-Phase motor winding insulation

MEGGER Meter # Fluke insulation multimeter
3-Phase motor winding insulation test
Fluke 1587 FC insulation multimeter
Check motor winding insulation is good or bad with help of meter.
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[@amandeepchahal007]

Good job 👍

[@DallasAutoDiag]

As far as i know a 3 phase motor windings are not suppose to have any continuity between any given 2 phases. just like between any given phase and the motor case. in your testing when there was 0 resistance between 2 phases on motor 1 you said "this is good" which is actually not. and the opposite happened on motor 2. in addition, you were suppose to hole the test button for a minimum of 60 seconds to see if there is any drop in the resistance. in short, Hi resistance=good, Low resistance or a 0v reading=bad.

[@LifeOfEngineering-dm7fk]

Thnak you so much for your response I will make sure that I will provided you right information but Thank you.

[@bobbauvian7700]

if phase wires are not connected in a 3 ph motor, how will the motor run then? I think may be we all need to learn more.....