How to identify the starting and ending leads of winding in a motor which is having 6 leads in the terminal box

How to identify the starting and ending leads of winding in a motor which is having 6 leads in the terminal box

§  If it is a single speed motor then we have to identify 6 leads.

§  Use IR tester to identify 3 windings and their 6 leads. Then connect any two leads of two winding together and apply small voltage across the other two terminals and measure the current.

§  Then swap the connections of one coil of same two windings and apply small amount of voltage (same as before) and measure current.

§  Check in which mode you get the max current and then mark it as a1-a2 & b1-b2. You get max current when a2-b1 will be connected and voltage applied between a1-b2.

§  Follow the same process to identify a1-a2, b1-b2, c1-c2.now we will be able to connect it in delta or star.