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...
March 2026
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...
Abnormal sound from the DC resistance tester
Reasons and solutions for abnormal noise of transformer DC resistance tester When the transformer DC...
Earth Grid Ground Resistance Tester
At present, in the electric power system, the test of the grounding resistance of the...
High-voltage test transformer operation
The high-voltage test transformer is a static electrical equipment that is used to change a...