Principle of partial discharge detector
Believe that everyone should know, electrical equipment in the production of partial discharge will generate...
April 15, 2026
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....
Vacuum Interrupter Test Set Testing principle
The vacuum switch vacuum tester is measured by magnetron discharge method. Pull the two contacts...
Measurement of insulation resistance
The measurement of insulation resistance is very important. We usually read the measured value at...
Why insulation resistance testing?
Insulation begins to age as soon as it is made. With the passage of time,...
Troubleshoot insulation resistance
Safety is critical in testing and troubleshooting. Because the insulation resistance tester generates a large...
Why megohm meter testing?
The insulation resistance quality of electrical systems decreases with time and environmental conditions (such as...
What is contact resistance
Contact resistance refers to the resistance of current flow due to surface conditions and other...