Actions Taken to Sustain Vacuum Circuit Breaker

Because the media on the interrupter and that with the interrupter make contact with gap insulation is filled with vacuum, it really is referred to as hermetically-sealed transformers. It has small size and light weight. And what is more it really is not necessary to preserve the interrupter and it is actually rather easy to operate, therefore it really is widely used in distribution grid. It truly is also in mining enterprises, power plants, and substation to protect and control the equipment. It really is also suitable where non-oil and less maintenance are required. It truly is also always equipped in the center cabinet, double cabinet, and fixed cabinet to protect these equipment under high voltage environment.

Ways to Preserve the Vacuum Circuit Breaker

In order to make sure that everything is all right and the SF6 switchgear is all with working smoothly, it really is necessary to power off the vacuum circuit and inspect it all over. We should follow the following measures:

Firstly, we should conduct the fracture frequency voltage withstand test for the pipe, and it really is also necessary to conduct test with the density in the vacuum and finally write down the result.

Secondly, fracture frequency voltage withstand test should also be conducted for the insulation component.

Thirdly, we should also test the open distance, compression stroke and mechanical properties and then make detailed record about them.

Fourthly, we should also make sure that both the retainer at the rotating joints and dowel are there and right. And we should also lubricate the rotating parts and sliding parts.

Fifthly, we should also check whether or not the connecting bolts and the nuts are loose. We do so because both the connecting bolts and nuts are adjustable. We should also pay special attention to the small screws at the auxiliary switch and the lock nut, connected with the vacuum moving conductive rod.

Sixthly, if the vacuum circuit breaker works above current of 1600 A, it is actually necessary for us to get accurate information about the direct current resistance from both on the pole and record them.

Seventhly, if it can be necessary for us to replace the pipe, we should read the specification beforehand. And after the replacement, it can be also necessary for us the test the mechanical properties and the pressure.

Eighthly, it can not be put into operation before we make sure that every thing is ok after the annual inspection. Therefore, it can be necessary to operate it at least 8 times without any load before its operation.