Three Phase Motor

Ask the manufacturer, perhaps?

This is a fairly commonly-asked question on CR4. Try a search of CR4 for more information as I believe this question has been answered before.

1.wat tests do i do on a three phase motor:

depending on wat you'd want to check on your motor but here are a few tests you can do on your motor: *insulation-resistance test * resistance test *earth fault *amperage test *speed test... etc

2.should readings be the same between windings;

They should definately be the same. in some instances you may get a difference of say: u=3.7ohms v=3.8ohms w=3.8ohms. i'd say this is acceptable as some variances may emanate from your multimeter or the point of contact when you carryout the test.

3. a faulty motor gives weird readings, maybe an open circuit, open winding readings