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12 lead 3 phase motor continuity

12 lead 3 phase motor continuity

12 lead 3 phase motor continuity

(OP)
I have a 460 volt 3 phase motor with 12 leads. 4to6, 5to8 & 6to9. When I do a continuity check with all the other leads unhooked I get continuity across 1 & 10. Nothing on the other leads. Is this a good reading?

RE: 12 lead 3 phase motor continuity

If a NEMA motor, the continuity pairing is 1-4,2-5,3-6,7-10,8-11, 9-12.  If IEC, then U1-U2, V1-V2, W1-W2, U5-U6, V5-V6, W5-W6.  That from the Pocket Elect. Eng. Handbook.

There are other 12 lead motors.  Wye-Delta can be 12 lead and, if I'm not mistaken, some part-winding motors are also 12 lead.

RE: 12 lead 3 phase motor continuity

lhmida;
Is there a typo in your first post? You have 4-6, but 4-7 is a standard connection and in sequence with 5-8 and 6-9.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: 12 lead 3 phase motor continuity

(OP)
Bill
Yes correct, my error. It is 4-7. Thanks for correcting that. We megged out the motor today and hooked it up. It works fine.

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