Technical
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What is the difference between a voltage test and an insulation test
Voltage test and insulation test are both test methods for electrical equipment. However, it is generally necessary to do the insulation test before the voltage test, because the voltage is a destructive test, only to ensure that the insulation of the equipment is not a problem, and then to play ...Read more -
The necessity and function analysis of SVG in photovoltaic power station
With the enhancement of global environmental awareness and the rapid development of renewable energy, photovoltaic power generation has gradually entered people’s lives as a clean energy. However, in the operation of photovoltaic power plants, power quality problems have become increasingly...Read more -
The differences between series and parallel resonators
Series resonance is a typical AC voltage withstand test device in power test. So what is the difference between series resonance and parallel resonance, and what are their characteristics? The difference between series resonance and parallel resonance: it has different functions in the resonant s...Read more -
Attention in maintenance and testing about Contact resistance tester
The contact resistance tester is widely used in the measurement of contact resistance, loop resistance, cable and wire, weld contact resistance of various domestic electrical control switches in enterprises. Our company R & D and production of high-precision contact resistance tester, accurat...Read more -
Dc resistance measurement of dry type transformer windings
First, the purpose of winding DC resistance measurement 1.1 Whether the welding or mechanical connection at the connection of the winding wire is good, whether there is welding or poor connection. 1.2 Whether the pin is properly connected to the shell and the pin is properly connected to the tap-...Read more -
Four ways to judge the degree of aging of electrical equipment
Using electrical equipment for aging has a big safety risk. Therefore, judge the degree of aging of electrical equipment, avoid accidents and maintain the stability of the power system. How to determine the service life of electrical equipment? HVHIPOT editor introduce everyone to know 3 methods...Read more -
How to use a ground resistance tester in harsh environments?
In sandy and stony soils with high earth resistivity, a grounding network composed of multiple grounding bodies in parallel is often used to meet the requirement of low grounding resistance. But sometimes a lot of steel is used and the ground area is large. It is often difficult to achieve the re...Read more -
Precautions for Power frequency High voltage test
Some of the main factors that affect the power frequency withstand voltage test are as follows: 1. First of all, we need to choose the appropriate capacity of the test equipment. If the capacity of the test equipment is insufficient or too large, the field test will be affected. 2. The impact of ...Read more -
Why do power cables overheat during operation
With the development of electricity, more and more people rely on electricity in life, and the importance of wire and cable has also been highlighted. We know that wires and cables are used for power transmission. If the wire and cable continue to heat during operation, the temperature of the wir...Read more -
How to reduce transformer partial discharge ?
Measures to reduce partial discharge of transformers 1. Dust control Among the factors that cause partial discharge, foreign matter and dust are very important factors. The test results show that the metal particle with the diameter of Phi 1.5μm can generate much more than 500pC discharge under t...Read more -
Fault analysis and treatment of relay protection
First, relay protection fault analysis 1, current mutual inductance saturation fault The saturation of current transformer to the relay protection of power system is very large. With the increase of the terminal capacity of the distribution system equipment, the short circuit current will be larg...Read more -
How to improve the sensitivity of oil chromatography analyzer?
Oil chromatography analyzers mainly use differences in boiling points, polarities and adsorption properties of substances to separate mixtures. After the sample to be analyzed is vaporized in the vaporization chamber, an inert gas (i.e., carrier gas, also called mobile phase) is brought into the ...Read more