Field test method of ground resistance tester
The ground resistance tester is a portable ground resistance tester equipped with the necessary test...
Technical Guide
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...
The role of relay protection in power system
We usually think of power systems in terms of the more impressive parts of them...
Analysis of inaccurate ground resistance detection
First, the ground resistance is detected incorrectly or indicates the cause of instability or even...
Megohm meter test
The megohm meter test was performed according to the following steps, 1. Switch off the...
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....
Measurement of insulation resistance
The measurement of insulation resistance is very important. We usually read the measured value at...