1. Disconnect low-voltage side load switch and circuit breaker for maintenance. The circuit breaker retreats to the disconnection position;

2. Disconnect the high-voltage side circuit breaker of the maintenance transformer, close the earthing switch and hang the label;

3. Check whether the transformer cover and nameplate are intact, and tighten the bolts of the cover;

4. Check whether the high and low voltage side of the transformer is in good contact with the cable or bus bar;

5. Fastening the voltage regulating coupling bolts of the transformer;

6. Check whether the cooling fan is abnormal, tighten the electrical connector of the fan control box, and check whether the electric appliance is intact;

7. Clean the transformer;

8. Check the neutral point grounding of the transformer.

9. Check whether there are any left tools in the transformer, and close the transformer outer cover.

Baoding dry transformers are widely used in local lighting, high-rise buildings, airports, terminals, CNC machinery equipment and other places. Simply speaking, baoding dry transformer refers to the transformer whose iron core and winding are not impregnated in insulating oil.

The cooling method is divided into natural air cooling (AN) and forced air cooling (AF). During natural air cooling, the transformer can run continuously for a long time under rated capacity. When forced air cooling, output capacity of transformer can be increased by 50%.

Suitable for intermittent overloading operation or emergency overloading operation; Due to the large increase of load loss and impedance voltage during overloading, it should not be in the state of non-economic operation.

Baoding zhongyi electric material manufacturing co., LTD is a professional manufacturer of transformer for baoding transformer factory. It has professional production equipment, hoisting, tooling and testing equipment, and has established a perfect quality management system.

Main products of the company: baoding dry type transformer, baoding box type transformer, baoding oil immersed transformer, baoding high and low voltage complete sets of equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.