Motor rewinding is a skilled process that involves repairing or replacing the coils in an electric motor. Here’s a breakdown of the basic steps involved in motor re-winding.
1. Disassembly 2. Coil Removal
3. Cleaning and Inspection
4. Coil Preparation 5. Winding:
6. Connection and Insulation
7. Testing 8. Reassembly
9. Balancing 10. Final Testing
The stripping of your windings is a very important part of the repair process. Ask your shop how they strip your windings. Dreisilker utilize motor saf stripping that protect the motor and its laminations.
We conduct another core loss test after stripping to make sure the stripping process didn’t damage anything. Plus we compare the results to the previous core loss testing results to see whether or not hot spots were removed.
Our stripping method leaves us with a winding head and 3 phase coils. This allows us to choose the appropriate wire for your motor. We always use Class H insulated wire or better.
We utilize computerized coil winding machines which ensures every phase of your motor has the same length of coils, creating equal resistance and inductance within each phase.
We use high quality slot paper that we crease and cuff for every slot. This allows for mechanical rigidity of the windings which limits vibration and increases reliability.
Our experienced winders take great care not to damage the copper wire’s enamel while inserting the slow. We use a temporary sleeve to protect the wire from scratches when inserting the coils into the slots.
Our winders take the time to tie down every slot. This helps to ensure rigidity of the winding head, reducing vibration and improving reliability. Some repair shops and even motor manufacturers take a short cut and tie down every other slot..
To ensure quality of our windings, we conduct many tests including visual inspection, hi pot, milliohm resistance, insulation resistance, surge testing, rotation test, record current, and more.