High voltage motor coil insulation and insulation failure
Compared with ordinary motor windings, the manufacturing process of high-voltage motor coils is more complicated. It is necessary to lay several layers of mica tape on the outside of the forming coil, and then add a low resistance band and a high resistance band.
There are three ways of mica tape wrapping: pure, semi-automatic and fully automatic. In the process of mica tape wrapping, the basic requirements of uniform thickness, uniform tightness and no damage should be met. In actual operation, the effect of automatic bandaging is achieved. Preferably, it can eliminate the interference of various human factors. In contrast, in the case of semi-automatic and manual operation, there is always some uncertainty as to whether the stack consistency or the tension is tight.
The tape process should ensure that the banding and winding, as well as the maximum fit between the tape and the tape, to prevent the formation of air gaps between them, affecting the final dipping and curing effect, and even causing the motor to discharge, directly Affect the performance level of the motor.
It should also be emphasized that the low resistance band wrapped by the straight line of the coil and the high resistance band wrapped by the notch position prevent the corona from occurring while strengthening the insulation, so it is necessary to ensure that the tape is not damaged.
