Exceeding the limit of DC resistance tester
The DC resistance tester is an indispensable experimental item after the transformer is handed over,...
March 2026
hvhipot Test process of relay protection tester
Test instruction process of relay protection tester Transformer compound voltage blocking (direction) overcurrent protection This...
How to use oil-immersed test transformer
In addition to the AC power frequency withstand voltage test, the oil-immersed test transformer can...
How to maintain high voltage test transformer
1. Periodic test contents of high-voltage test transformer include: ① Oil sample testing-performance indicators such...
Large current generator operation check
1. Connect the working circuit according to the electrical schematic diagram, the transformer shell, and...
Causes and hazards of partial discharge
1. The cause of partial discharge The so-called “partial discharge” refers to a discharge in...
The role of DC resistance tester
The DC resistance measuring instrument determines the welding and connection quality of the lead wire...
Use high voltage test transformer
Precautions for using high voltage test transformer: 1. Connect the working circuit according to HV...
Precautions for the use of withstand voltage test
In the operation of power equipment, the insulation is subject to the effects of electric...
Method for measuring DC resistance of transformer
The method of measuring the DC resistance of a transformer is as follows: (1) Electric...