Thank you for your attention.A range of high specification enamelled copper wire to suit a wide range of coil winding applications. If you have any questions please ask, and i will try to answer ass soon as possible. I hope you enjoined my presentation of rewinding a three phase motor. I took all electrical equations and orientation tables from book: Neven Srb ELEKTROMOTORI If we compare all data we can see that motor isn't bad at all. In second line is measurement at 380V and third line at 400V. In upper table there is data from manufacturer in first line. Motor was made for voltage 380V, but now we have 400V in EU. I made all tests with two different voltages. But in next measurement we can see that resistances do not dramatically affect on electric motors performance. You can se that on measurment of resistance where, winding resistances aren't identical. Because gap between stator and cover was very small, i decided to do a little bit bigger first coils, and a little bit smaller last coils. This time winding was too big and i couldn't close the cover of motor. Then i decide to make bigger one but i found problem again. I couldn't access to them because other winding were too small. First i made coils too small, and i couldn't insert last coils in slots. I had a lot of problems with winding new winding too. I had a lot of problems with calculation but i solved them and i got same parameters of winding as were on old one. Most time i spent on calculation of new winding.
It took me about a week to rewind this motor.
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