How to choose the circuit resistance tester
At present, there are many manufacturers of circuit resistance tester, whose performance varies greatly. When...
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...
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...
Maintenance knowledge of relay protection tester
The internal part of the relay protection tester is electronic circuit, easy to be interfered...