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12 lead 3 phase motor / lead identification

12 lead 3 phase motor / lead identification

12 lead 3 phase motor / lead identification

(OP)
I have a 12 lead 40 hp motor. They marked 2 leads as T3. I know there is a way to identify the leads with a battery but can not remember the procedure. Can anyone help?

RE: 12 lead 3 phase motor / lead identification

Hello Startuptech

There were several good threads written about this proceedure, If you use advanced search option you will find a lot of good info.

Chuck

RE: 12 lead 3 phase motor / lead identification

The terminals must ring continuity as follows:
T1 and T4
T2 and T5
T3 and T6
T7 and T10
T8 and T11
T9 and T12

If most of your terminals are identified try first continuity with any multimeter.

RE: 12 lead 3 phase motor / lead identification

Hello Startuptech

Here is the excellent thread I remember reading this might be the proceedure your referring too. was not as easy to find as I thought.

Chuck

http://www.eng-tips.com/viewthread.cfm?qid=109107

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