Safe use of circuit breaker tester
The circuit breaker tester is based on a high-performance industrial embedded platform, has high-speed data...
March 2026
hvhipot Action frequency of relay protection tester
Action frequency test range The start value and end value of the test range of...
What causes the DC resistance tester to overheat?
The manufacturer of the DC resistance tester will show you what factors can cause the...
Working principle of high voltage test transformer
The iron core of the oil-immersed high-voltage test transformer is a single-phase core type, which...
Insulation resistance test
Insulation resistance test To check the insulation status of electrical equipment, measuring the insulation resistance...
Clamp-on ammeter to check leakage
The clamp ammeter is a combination of a current transformer and an ammeter. The iron...
How to use the zinc oxide arrester tester?
The zinc oxide arrester tester is a special instrument used to test the electrical performance...
Features of DC resistance fast tester
The DC resistance fast tester (micro-ohmmeter) is a high-precision replacement product that replaces the DC...
How to use gas-filled test transformer
How to use gas-filled test transformer 1.Connect the working circuit and ground it well. 2....
Measurement of earthing resistance of earth grid
When measuring grounded equipment, due to various interferences, such as unbalanced zero-sequence current and radio...