Common methods of testing ground wire resistance
The ground wire resistance mainly includes the ground wire and the ground body itself. The...
2026
hvhipot Causes and solutions of partial discharge
Partial discharge is a common fault in high-voltage switchgear. Long-term partial discharge will affect the...
On-site test method of DC resistance tester
In order to ensure the accuracy and credibility of the measurement data as much as...
Insulation resistance tester operation steps
When the insulation resistance tester is working, the high voltage generated by itself is measured...
Megger to measure cable insulation resistance
The digital megohmmeter has three binding posts: one is “L”, one is “E”, and the...
Working principle of insulation resistance tester
Insulation resistance testers are usually called megohmmeters or high-resistance meters, which are widely used to...
How to use the gas-filled test transformer?
Test transformers are divided into oil-immersed test transformers, gas-filled test transformers, and dry-type test transformers....
The role of high-voltage test transformer
High voltage test transformer function: ① Generate power frequency high voltage to act on the...
Common faults of DC resistance tester
The DC resistance tester is often used in electrical work. This instrument is an ideal...
Test procedure of loop resistance tester
The loop resistance tester is also called contact resistance tester. This instrument is used to...