Precautions for three-phase motor moisture treatment
1 For the motor extracted from the rotor, heat and dry should be carried out in clean air. Clean all parts of the motor before drying.
2 When the motor is dry, the winding temperature of the motor must be lower than the temperature required by its specified insulation level (to ensure safety, it is better to be below 10 °C below its specified temperature). Generally, the winding temperature is controlled at 70 °C ~ 80 °C during drying. optimal.
3 Motors with excessively wet windings cannot use DC current drying method, and DC has electrolysis.
4 When using current and iron loss method, the motor casing must have a good grounding wire to prevent electric shock. When using a bulb or iodine-tungsten lamp, etc., care should be taken to prevent electric shock.
5 closed type motor, when the rotor is not dry, the junction box or inspection hole of the motor should open a certain gap, and the small low-voltage motor can also open the gap of the motor end cover to facilitate the moisture emission in the motor.
6 During the drying process, the temperature and insulation resistance of each part of the winding are measured regularly and recorded. The initial stage of drying is recorded every 15 to 30 minutes. After 1 to 2 hours, the temperature of the motor must be recorded periodically to prevent damage caused by overheating of the motor. In fact, there are many specific methods for drying the motor after damp. In the production site, the motor should be dried according to the specific conditions. However, no matter which method is used to dry the motor, the motor temperature must not exceed its allowable value. New damage to the motor insulation, attention to equipment and personal safety during drying; the production site often requires the motor to be put into operation and safe operation in a timely manner. The southern environment is rainy and humid, so as to ensure that the motor does not suffer from moisture and water. For operation or safe operation, specific motor moisture-proof measures should be formulated and attention should be paid to the selection of the motor in a humid environment.
If you want to buy a power tool motor, please pay attention to garden tools motor
