Fault diagnosis of relay protection tester
There are several methods for fault diagnosis of the microcomputer relay protection tester: 1. Probability...
March 17, 2026
Terminology of insulation resistance tester
An electrical system is like a pipe system. Voltage is like liquid pressure, current is...
Interference problem of partial discharge tester
How to eliminate the interference problem in the partial discharge tester test (1) External interference...
Operation precautions of DC resistance tester
In the measurement process of the DC resistance tester, in addition to strictly complying with...
Safety measures before high voltage test
Insulation defects of high-voltage test transformers are an important factor that causes failures between enterprise...
Partial discharge acoustic emission detection
The substation is an important part of the power transmission system, and the transformer is...
Several methods of circuit breaker testing
1) Use electromagnetic oscillator or drum instrument. When the early oil switches were tested for...
What are the partial discharge test procedures?
Partial discharge test samples should be pretreated in accordance with relevant regulations: keep the surface...
How to operate the ratio tester?
operating 1. Wiring: Connect the terminals of the instrument (A, B, C, a, b, c)...
Common abnormalities of loop resistance tester
The loop resistance tester will inevitably encounter various abnormal problems in HV Hipot Electric Co.,...