Technical Guide
-
The method to find resonance point in cable series resonance test
The cable series resonance test refers to the AC withstand voltage test of the cable using the series resonance test device. In addition, the device can also perform insulation tests on transformers, GIS, and electrical equipment other than large capacity. GDTF series cable frequency conversion s...Read more -
What is the significance of partial discharge detection for insulation products?
Partial discharge detection is of great significance to high-voltage cables and to study the characteristics of partial discharges in insulation, especially power cables. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?...Read more -
What are the main applications of GD-877 thermal imaging camera?
HV HIPOT GD-877 infrared thermal imager adopts 25um160*120 detector, and the temperature measurement range is -20°C～+650°C. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?...Read more -
The purpose and test method of AC withstand voltage test of transformer
The AC withstand voltage test of the transformer is a test in which a sinusoidal power frequency AC test voltage exceeding a certain multiple of the rated voltage is applied to the tested transformer winding together with the bushing, and the duration is 1min. The purpose is to use a test voltage...Read more -
What is the difference between a voltage transformer and a current transformer?
What is the difference between voltage transformers and current transformers in terms of their working principles? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? HV HIPOT GDP...Read more -
How to solve the overvoltage problem of the frequency AC resonant test system ?
The frequency AC resonant test system is used to identify the insulation strength of electrical equipment. It is of decisive significance for judging whether the electrical equipment can be put into operation. It is also an important means to ensure the insulation level of the equipment and avoid...Read more -
What is transformer winding frequency response?
Transformer winding deformation refers to the irreversible changes in the size and shape of the winding under the action of machinery and electricity. It includes changes in axial and radial dimensions, body displacement, winding twist, bulging and inter-turn shorts, etc. The reason is that the t...Read more -
Precautions for Oil Chromatography Analyzer
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?HV HIPOT GDC-9560B Power system Insulation Oil Gas Chromatography Analyzer Installation and removal of chromatographic column: 1. The installation and removal of the chromatographic...Read more -
Application of Power Quality Analyzer
In the actual test and analysis of the power quality of the power grid, a power quality analyzer is needed. This device is widely used in the measurement of power quality and is very popular among electric power workers. In this article, HV Hipot will give a brief introduction for?this equipment ...Read more -
The features and functions about HV HIPOT CT/PT Analyzer
HV HIPOT GDHG-201A Transformer Comprehensive?CT/PT Analyzer (transformer frequency conversion volt-ampere characteristic tester) is a special testing instrument used for relay protection and high voltage insulation to test protection current transformers and protection voltage transformers. The i...Read more -
Problems in the test site of the loop resistance tester
When the loop resistance tester (also called the contact resistance tester) designed according to the traditional design principle was tested in the field, it was found that there was a common problem. When the voltage connection circuit of the tester is in poor contact or open circuit, the teste...Read more -
The Importance of Precautionary Tests in Electrical Equipment Operation
In order to reduce accidents and prevent accidents, the cables in operation should be regularly subjected to preventive withstand voltage tests. The DC withstand voltage test standard of the cable can refer to the relevant cable operation regulations. In principle, the DC withstand voltage test c...Read more