How to repair the short-circuit fault of the pole phase group at the end of the motor coil?
The motor turn-to-turn short circuit includes a short circuit between the coils of each pole phase group, a short circuit between the coils in one pole phase group, and a short circuit between the turns in one coil. Phase-to-phase short-circuit faults typically have a short-circuit between the winding ends and a short-circuit between the upper and lower coils in the slot. The reason for the phase-to-phase short circuit is that the phase-to-phase insulation size does not conform to the regulations, the insulation pad itself is defective, the interlayer gasket is biased, or the wire is damaged. In addition, insulation damage to the winding or lead-out bushings can also cause phase-to-phase shorts.
Short-circuit fault repair of the pole phase group at the end of the motor coil. The triangular insulating pad of the interpole group between the coil ends, when soldering, soldering on the solder, forming a tin current or burr when cooling, puncture the insulating pad, or the solder will burn the insulating pad, both of which will make the interphase insulating pad Partial breakdown due to loss of insulation causes a short circuit between the pole phases. The repair method is to heat the coil, soften the insulation, then use the cable management board to open the coil between the coil sets, reinsert the new insulation mat, and finally paint.
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