When a motor winding fails, the degree of failure directly determines the winding repair plan. For large-scale faulty windings, the common approach is to replace all windings. However,in the case of partial burnout and a small scope,replacement of part of the coils can be used. The repair cost will be much smaller, This repair solution is relatively common on large-sized motors. It is not worth adopting this solution for particularly small motors.
For soft windings, when using an impregnating paint that can be properly restored after the insulation is cured, the winding core can be heated, and then partially extracted and replaced; for windings that have passed the VPI impregnating paint process, reheating cannot solve the extraction problem of winding,and there is no possibility of local repair.
For large-size formed winding motors, some repair units will use local heating and stripping to extract the faulty winding and associated windings, and then replace the faulty coil in a targeted manner based on the degree of damage to the associated coils. This method not only saves repair materials cost and will not have a negative impact on the iron core.
During the motor repair process, many repair units use incineration to disassemble the windings, which has a great impact on the performance of the motor core and also has a negative impact on the surrounding environment. In response to this problem, smarter units have invented an automatic motor winding removal device that extracts the coils from the iron core in a natural state, effectively ensuring the electromagnetic performance of the repaired motor while not polluting the environment.