Undesirable Consequences That Can Be Caused By Electromagnetic Wires When The Motor Is Repaired

Undesirable consequences that can be caused by electromagnetic wires when the motor is repaired

In the process of motor repair, involving the repair of windings, it is more important to select electromagnetic wires.

In the actual winding repair process, many repair units adopt the way of "drawing tigers according to the cat", through the way of several turns to determine the winding scheme, when it comes to electromagnetic wires, most of them use the measurement method to determine the diameter of the electromagnetic wire conductor, and then determine the insulation thickness of the electromagnetic wire.

For windings using enameled wire, the two states of the existence and absence of the paint film can be used to directly observe the thickness of the paint film, but for the serious burning of the winding, it is impossible to measure the thickness of the paint film, so it can only be selected according to some actual experience, when the thickness of the paint film exceeds its original state, it may lead to a higher slot full rate of the winding.Some can't even complete the embedding; When the thickness of the paint film is selected small, it may lead to poor reliability of the winding; More importantly, for the selection of the heat resistance level of the magnet wire, the appropriate electromagnetic wire must be selected according to the grade marked on the motor nameplate, and the electromagnetic wire higher than its corresponding heat resistance level can be selected to prevent the reliability of the winding from deteriorating and the possibility of short-term refailure.

For the high-voltage motor winding, it is necessary to select the matching electromagnetic wire according to the rated voltage of its actual operation, and the insulation structure of the electromagnetic wire for the winding of the high-voltage motor with different voltage levels is quite different; In addition, the thickness of the insulation of the stator winding coil, the wrapping process, and the matching wire embedding and dipping processes are all crucial.

In the actual motor repair process, the repair unit technology and equipment are not available, will have a greater impact on the repair effect of the motor, so for the motor user, it is very necessary to choose a relatively professional repair unit, blindly pursuing low prices, which is very likely to lead to repeated failures of adverse consequences; If necessary, repair by a professional motor manufacturer, the effect will be much better.