Operation of insulation resistance tester
Insulation diagnosis is an important means of detecting insulation defects or faults of electrical equipment....
April 2026
Test principle of switch vacuum tester
Vacuum switch tester by magnetron discharge measurement method, the vacuum arcing chamber, a certain distance...
Principle of partial discharge detector
Believe that everyone should know, electrical equipment in the production of partial discharge will generate...
Analysis of inaccurate ground resistance detection
First, the ground resistance is detected incorrectly or indicates the cause of instability or even...
The role of relay protection in power system
We usually think of power systems in terms of the more impressive parts of them...
Megohm meter test
The megohm meter test was performed according to the following steps, 1. Switch off the...
Measurement of insulation resistance
The measurement of insulation resistance is very important. We usually read the measured value at...
Maintenance knowledge of relay protection tester
The internal part of the relay protection tester is electronic circuit, easy to be interfered...
Test the maintenance method of transformer
Inflatable high-voltage test transformer is mainly used in power system, industrial and mining enterprises, scientific...
Common interference in partial discharge test
1) the filter in the power supply can suppress the interference from the power supply....