On-load tap changer tester operation
Related instructions: 1. In the actual measurement, the measured waveform is often worse than the...
March 2026
Common methods of testing ground wire resistance
The ground wire resistance mainly includes the ground wire and the ground body itself. The...
Types of high-voltage test transformers?
At present, there are many types of transformers on the market, and the advantages and...
Classification of test transformers
1. Classification of test transformers 1. According to the number of phases of a single...
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...
Common faults of DC resistance tester
The DC resistance tester is often used in electrical work. This instrument is an ideal...