Precautions for three loop resistance tester
HTZZ-S20A three-circuit transformer DC resistance tester (hereinafter referred to as direct resistance instrument) is the...
April 2026
hvhipot How does DC resistance tester measure loop
The constant current series resonance circuit is mainly composed of a sampling circuit and a...
How to distinguish test transformer
There are five types of test transformers according to medium or structure: oil-immersed test transformer,...
Megohmmeter insulation test
Most preparations for measurement are related to work safety. All operations must be performed carefully...
How to measure ground resistance
There are two important parameters in the grounding device: 1. Grounding resistance value; 2. Grounding...
Research background of DC resistance tester
Small resistance can be seen everywhere in various electrical equipment, such as the contact resistance...
Usage of clamp type earth resistance tester
There are many ways to use the clamp-type grounding resistance tester. How to use the...
How to use megohm meter correctly
Megohmmeter is also called shaking table or insulation resistance tester. It is a simple and...
The necessity of battery internal resistance test
The internal resistance is currently recognized as the most effective and most convenient performance parameter...
Switchgear partial discharge detection method
Partial discharge analysis technology Specifically, commonly used partial discharge analysis technologies include the following: First,...