DC withstand voltage test negative polarity press?
Regarding the issue of using negative voltage to do the DC withstand voltage test on...
March 13, 2026
Grounding resistance measurement range
Ground resistance measurement methods usually have the following types: two-wire method, three-wire method, fHV Hipot...
Wiring method of insulation resistance meter
①Measure the insulation resistance of the lighting or power lines to the ground, the E...
Grounding resistance tester single point grounding
Method for measuring single-point grounding with a clamp-on ground resistance tester: A major breakthrough in...
Electrical equipment high voltage test knowledge
In order to prevent damage or accidents of high-voltage electrical equipment during operation, to ensure...
Reasons for inaccurate ground resistance test
The reasons for the inaccurate ground resistance test in lightning protection detection and the treatment...
Prevent poor contact of test transformer
The test transformer is the basic test equipment used for AC withstand voltage test by...
Cause Analysis of AC/DC Voltage Divider Failure
The AC and DC voltage divider is an instrument for field measurement, which can measure...
Use of shielded end of megohmmeter
When is the shielding end used? There are three terminals of the megohmmeter: high-voltage terminal,...
Field test of DC resistance teste
The DC resistance tester can reflect the short circuit between winding turns, the broken strand...