Quantity and volume, this may lead to an uneven magnetic circuit during manufacturing, such as differences in the magnetization performance of silicon steel sheets and uneven air gap distribution. In addition, imbalances in the stator winding, problems with three-phase power supplies, short circuits in the excitation winding, broken bars in the asynchronous motor rotor, etc., will cause the stator core of Taifu Xima motor to generate an alternating magnetic field around it, and then generate an induced alternating voltage on the motor shaft. This voltage is called wave voltage.
YXKK Series High-efficiency High-Voltage Three-Phase Asynchronous Motors
Once the shaft voltage reaches a certain level, it can break through the oil film of the bearing and form a wave current through the circuit formed by the end cover housing or between the bearing housing and the foundation. Shaft current can cause problems such as point burns on bearings, pins, rollers and raceways. In severe cases, it can even cause the normal operation of the bearing to be interrupted.
In order to block this circuit, for motors using bearing housings, insulation pads are usually added under the bearing housing at the rear end of the load, and the installation screws of the bearing pair are also equipped with insulation sleeves.
For Taifu Xima motors equipped with end cover bearings, if sliding bearings are used, insulation pads will be placed between the bearing bush and the bearing housing. When using rolling bearings, insulation separation is required on the bearing sleeve, and the installation screws of the bearing sleeve should also be equipped with insulation sleeves. Another method is to directly use bearings with insulation performance, but the cost is relatively high.
Xima High-Voltage Motors
The vibration phenomenon of the motor, especially when the vibration of the high-speed motor exceeds the standard limit, will affect the normal operation of the motor, and even damage the motor, causing abnormal shutdown of the unit, thereby adversely affecting production. By using a spectrum analyzer or vibration tester to measure the vibration value and frequency of the motor and analyzing the measured data, the cause of the motor vibration can be diagnosed.
The main causes of Taifu Xima motor vibration include electromagnetic vibration and mechanical vibration. Electromagnetic vibration is the inherent vibration of the motor and will not be considered for the time being. The mechanical vibration of the motor will change with the operation of the motor and can be eliminated through maintenance. Therefore, this article mainly analyzes the mechanical vibration of the motor.
The main reasons for the mechanical vibration of the Xima high-voltage motor body can be divided into two major parts, namely the rotor part of the motor and the support part of the motor rotor.
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