Electrical system grounding resistance
Electrical grounding: Grounding refers to the neutral point of the power system and electrical installations,...
March 2026
Oil-immersed transformer insulation material
Commonly used insulating materials for oil-immersed transformers include insulating cardboard and transformer oil. Liquid insulation...
Three test methods of ground resistance tester
The ground resistance tester should be used in the ground resistance test. During use, not...
Dry-type transformer operating environment
Dry-type transformers are a kind of transformers. For the use of dry-type transformers, attention should...
Why is DC resistance not equal to AC resistance
1. From a microscopic point of view, many physical properties of media, including conductivity, permittivity,...
Principle analysis of insulation resistance tester
Insulation resistance refers to the resistance between two parts of conductors separated by insulating materials,...
Transformer measuring short-circuit impedance
To measure the short-circuit impedance of a transformer, a special instrument is needed. Transformer low-voltage...
Use high-voltage short-circuit ground wire
1. Grounding of overvoltage protection Lightning rods and lightning arresters are widely used in the...
Gap protection of dry-type transformers
The dry-type transformer is a huge component. There are many gaps in it. Generally, voltage...
Differential protection of dry-type transformer
There are many types of dry-type transformer protection. For dry-type transformer protection, there is a...