Large ground measurement analysis
When measuring grounding equipment, the error of the test results is large due to various...
Technical Guide
Microcomputer relay maintenance tester
The main object of microcomputer relay protection and maintenance testing machine is the relay protection...
Operation of insulation resistance tester
Insulation diagnosis is an important means of detecting insulation defects or faults of electrical equipment....
How to choose the circuit resistance tester
At present, there are many manufacturers of circuit resistance tester, whose performance varies greatly. When...
Select the appropriate circuit breaker tester
The circuit breaker tester is used to check the operation and condition of circuit breakers...
Field test method of ground resistance tester
The ground resistance tester is a portable ground resistance tester equipped with the necessary test...
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...