Hello everyone. I am a new member, and would like to wish you all GOOD DAY. I have a question and will appreciate if a solution is suggested. A six lead part-winding star compressor was rewound (380-415/3phase/50Hz).The leads were given sleeve color 2 X red, 2 X blue and 2 X yellow. The winding continuity and resistances between each star point showed okay and equal (1.4,22.214.171.124 ohms).
However when the compressor was started as a 2Y DOL, the main circuit breaker tripped.
When this compressor was started on the test bench on only one star (or the other), without load, the compressor started and ran (no scrapping or screeching sound).
My question is how to find out which leads of the second star winding are to be connected for proper operation. I have tried to interchange two leads of the second star but without success. The open star winding when tested with a DVM showed 362,372,365 volts. Is the problem in the connection or the rewinding is incorrectly done. please reply