Daily maintenance and upkeep of dry-type power transformers

1. Regularly clean the instruments.

Dust accumulation is found and must be removed to ensure air circulation and prevent insulation breakdown. Transformers should be cleaned every six months. And keep the air dry and ventilated.

2. Strengthen the operation and maintenance of ventilation equipment.To ensure the normal operation of the fan, and for high-Power Transformers, turbofans should be used for ventilation.

3. It is necessary to regularly observe changes in temperature and humidity, maintain a balance between temperature and humidity, and pay attention to sudden changes in the displayed humidity values. Maintain the normal operation of the thermostat to avoid faults, and install a thermistor inside the transformer to achieve a dual configuration to prevent transformer failures.

4. In cold and humid weather and places, if the dry-type transformer suddenly stops running, check for abnormal moisture and condensation. If so, the surface frost must be removed to prevent insulation breakdown. To ensure that it does not affect the normal operation of the transformer insulation winding. As long as the insulation resistance value is not less than 2M Ω/1000V, the transformer can operate normally. The heat generated by the operation of the transformer will be returned to the normal insulation resistance. Under normal operating conditions. The temperature of the transformer body is higher than the ambient temperature around it, so there will be no decrease in insulation resistance.

5. Carefully inspect the fasteners and connectors for looseness. In addition to short circuits and other reasons, transformers inevitably experience loosening of fasteners and connecting pieces caused by vibration during long-term operation, and may overheat. Regularly clean with warm wax, combine prevention with testing, observe regularly, carefully inspect, and tighten parts and accessories.