No matter what causes the tripping of the main transformer, on the one hand, the load shall be handled as soon as possible and the operation method shall be changed. On the other hand, find out what kind of maintenance actions. The submersible pump shall be stopped immediately to check whether the maintenance action is abnormal, whether the transformer is overloaded when tripping, and whether the transmission and feeder lines trip at the same time. In addition to confirming that it is a misoperation and can be switched on immediately, the insulation resistance shall be measured and judged according to the following conditions:
1、 Oil change of power transformer
First lift out the body, drain the dirty oil and clean the oil tank. If there is any oil stain on the body, it should also be flushed. After the body is dried, inject new oil and replace all oil resistant rubber seals. Only after passing the test can the machine be hooked up and operated.
2、 Boring treatment of power transformer
There are many ways to dry the body. Users can use zero phase sequence drying method, eddy current drying method, short circuit drying method, oven drying method, etc. For power transformers with large capacity and voltage of 35kV, it is better to send them to the manufacturer for vacuum drying. This can ensure that the insulation of power transformer is dry and complete without aging.
Qingdao hengfengyou electric group is an export-oriented enterprise focusing on power transmission and distribution products, integrating product R & D, manufacturing and trade. It is the designated supplier of the world's top 500 enterprises. The main products are power transformers, medium and low voltage switchgear, distribution boards, circuit breakers, transmission towers, wires and cables and other transmission and distribution equipment. It has been successfully sold to more than 50 countries around the world. Product certification is complete. Hengfengyou Electric will provide you with the best electrical product solutions. 【https://www.hengfengyou-electric.com ； sales@hengfengyou-electric.com ； WhatsApp：+86158 5325 2696（Jack） +86158 5326 5269（Alisa） 】
