Principle analysis of insulation resistance tester
Insulation resistance refers to the resistance between two parts of conductors separated by insulating materials,...
March 2026
Method of measuring transformer resistance
The measurement of DC resistance is to check the quality of transformer winding welding and...
Principle and method of deformed winding tester
Using frequency response analysis to detect transformer winding deformation is to detect the amplitude-frequency response...
Test method of relay protection tester
experiment method: AC voltage/current/inverse time current relay calibration In the “gradual test” software module, set...
Leakage current measurement
Insulation resistance tester has leakage current measurement The wiring and principle of the DC leakage...
Preparation before megohmmeter measurement
The megohmmeter is used to measure the insulation resistance of insulating materials, electrical products, and...
Dry-type transformer core must be grounded
Dry-type transformers are a relatively important type of electrical appliances. For dry-type transformers, due to...
Knowledge points of loop resistance tester
1. Question: What is contact resistance? Answer: The contact resistance is the additional point that...
Precautions for deformed winding tester
In the process of power transformer use, transformer winding deformation tester is often used to...
Battery charge and discharge tester discharge
Discharge test steps of battery charge and discharge tester: (1) Fully charge the battery first....