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The ability to interrupt an electrical current is determined by measuring its travel and velocity curves.

The vacuum degree of the interrupter of the vacuum breaker must be kept within a certain range, this is necessary for a reliable disconnect.The vac...

BBC-H Transformer ratio tester in the original basis according to the user's requirements of the site use, make the operation more convenient, comp...

When the contact resistance tester designed according to traditional design principle is working in field, there is a common problem.

In December, Huayi supplied power test equipment for a Hunan company, and according to the user's test requirements, XZB-540kVA/270kV variable freq...

Microcomputer relay protection tester is only be used to test the microcomputer relay protection device, not to test other equipment.

It is a great honor for Huayi Marketing Department to supply a power engineering company in Tangshan again in the end of 2021.

Because of difference internal structure of test transformer, there are 3 kinds of them. Same function but the internal insulation material is diff...

In the last month of 2021, Huayi supplied a batch of power test equipment for Fuzhou University，including JYY-H insulating oil withstand voltage te...

Due to the quality differences of various manufacturers of variable frequency series resonant devices, the voltage of some equipment cannot be boos...

In October, Huayi completed the delivery of power test equipment for Dongjin Power Plant as scheduled.

DC resistance test is a very important test item after transformer handover, overhaul, and tap changer replacement. It refers to the resistance of ...