How to do frequency slip test
Rated operating voltage, the voltage value output in the rated operating state, generally 57.740V, rated...
March 17, 2026
Reasons for change in insulation value
Electricity safety problems exist in the process of electricity consumption. In electrical equipment, such as...
Solutions to problems with DC resistance tester
The DC resistance tester is an ideal device for the DC resistance of lateral transformer...
How is the insulation resistance tester used?
The reason why electricity can be used by people is largely because of insulation, that...
Fault detection of zinc oxide arrester
Most power stations use lightning arresters for lightning protection measures, among which the most commonly...
DC withstand voltage and leakage current test
When the test voltage is added to the specified voltage value, keep it for the...
Resistance absorption ratio and polarization index
What is polarization index and absorption ratio Polarization index (PI) and absorption ratio (DAR) are...
Causes of unbalanced three-phase resistance
Generally, there are several reasons: 1. The conductive rod in the transformer bushing is in...
What factors affect the resistance test?
1. Test voltage and electric field strength The resistivity (rate) value of the dielectric material...
Test principle of relay protection tester
The relay protection tester mainly focuses on relays, microcomputer protections, and other protection devices for...