Usage and precautions of clamp ammeter
The clamp ammeter is an instrument that integrates the current transformer with the ammeter. Its...
April 15, 2026
How about the dielectric loss tester?
Dielectric loss: energy loss caused by dielectric conductivity and hysteresis of dielectric polarization under an...
Dc high voltage generator test procedure
The dc high voltage generator has the characteristics of large output power, small size and...
The function of relay protection device
The main function of the relay protection device is to automatically cut off the power...
Overheat treatment of resistance tester
The insulation resistance tester is a kind of transformer dc resistance tester which is small...
Ground resistance detector reading
(1) in the detection of gas and liquefied petroleum gas station and high-rise buildings and...
Why contact resistance testing?
The contacts in the circuit breaker need to be checked periodically to ensure normal operation...
Large ground measurement analysis
When measuring grounding equipment, the error of the test results is large due to various...
Microcomputer relay protection device
Microcomputer protective device to electromagnetic interference protection measures are taken, substation, electromagnetic protection to the...
A digital megohm meter measures dc voltage
1. Transfer the dial to v. Some digital megohm meters (DMM) also include mv. If...