baselining a motor

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mickeyrench

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Location
edison, n.j.
We are replacing a 3 phase 230 / 460 9 lead motor this week and plan on megging it before putting it in service.
1. Do we connect the 9 leads [ high volt ] in this case and just meg L 1 2 3 ?

2. What s the best way? When we determined it was shot , we meg L1 to ground L 2 TO ground L 3 to ground and got a 0 ohm reading . and then all 3 together to ground.

3. Can i meg my motor from the t legs @ the starter about 60' away , the motor is in a hard to reach spot?

4.When megging does the needle stop at a value or does it float a little?
Thank you all for the help.
 
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