Precautions for DC resistance tester testing
1. After measuring the inductive load, the test line cannot be directly removed, so as...
March 2026
hvhipot Operation method of high current generator
We power test personnel all know that when the large current generator operation, the current...
What is partial discharge
If containing gas in the liquid and solid electrolyte composition, as a result of the...
How is partial discharge produced
According to the principle and position of partial discharge, transformer partial discharge can be generally...
Partial discharge measurement limitation
Partial discharge is mainly caused by the winding or transformer oil moisture, between the winding,...
Reasons for high contact resistance
Reasons for using loop resistance tester to test high contact resistance of high voltage switch...
How to use the insulation resistance tester
Method/Step 1. When the insulation resistance tester measures the insulation resistance of the circuit, the...
How to use the clamp ground resistance tester
1. Multi-point grounding system For multi-point grounding systems (such as power transmission system tower grounding,...
Six precautions for DC high voltage generators
The DC high voltage generator must strictly abide by the operating rules during the operation....
Temperature rise test of grounding transformer
Test transformers, also called neutral point couplers, are often used in three-phase power systems without...