Microcomputer relay maintenance tester
The main object of microcomputer relay protection and maintenance testing machine is the relay protection...
April 15, 2026
Operation method of large current generator
A large current generator (current lifter) is a separate or integrated structure based on the...
Select the appropriate circuit breaker tester
The circuit breaker tester is used to check the operation and condition of circuit breakers...
Operation of insulation resistance tester
Insulation diagnosis is an important means of detecting insulation defects or faults of electrical equipment....
Field test method of ground resistance tester
The ground resistance tester is a portable ground resistance tester equipped with the necessary test...
How to choose the circuit resistance tester
At present, there are many manufacturers of circuit resistance tester, whose performance varies greatly. When...
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...
Test principle of switch vacuum tester
Vacuum switch tester by magnetron discharge measurement method, the vacuum arcing chamber, a certain distance...