How To Extend The Service Life Of Enameled Aluminum Wire

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Service life issues of enameled aluminum wire

Advantages of enameled aluminum wire:

  1. enameled aluminum wire is easier to make coils than copper enameled wire. The surface of the enameled aluminum wire has a solid oxide film, so the insulation effect is good and the service life is long.
  2. Due to the good insulation of the aluminum wire coating, its heat-resistant temperature is 20°C higher than that of the copper wire.
  3. The biggest advantage of using aluminum wire is that it is 1/3 lighter than copper wire, which greatly reduces production costs and is easy to fix on fixed objects. It can also reduce freight and operations during transportation.

Service life issues of enameled aluminum wire:

  1. Use reasonable winding, embedding and other processing techniques

For variable frequency motors, there are higher requirements for the quality of the magnet wire and the integrity of the insulation structure. Therefore, it is necessary to strictly manage the winding, embedding and binding process of certain magnet wire suppliers, especially to prevent damage to the wire during the winding and embedding process, and the gap insulation and phase insulation should be placed in an appropriate place during the wire process. Position embedding process. The phase insulation should be made of materials that are easily penetrated by the insulating paint; the two ends of the coil should be reinforced and fixed to ensure that the two ends are integrated.

  1. Control the length of the connecting cable from the inverter to the motor terminal to avoid partial discharge and extend the life of the motor

As mentioned earlier, due to the impedance mismatch, as the length of the connecting cable increases, the overvoltage amplitude of the motor terminals will increase, which helps to cause partial discharge. Therefore, the manufacturer of the variable frequency motor should fully understand the various variable frequency power supplies used, determine the limit length of the connecting cable, and inform the user to minimize the overvoltage amplitude at the motor end, avoid partial discharge and extend the life of Rectangular Enameled Aluminum Wire.