Technical
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Common cable fault types and their causes
Cables are an indispensable part of modern power and communication systems. They carry a lot of electrical energy and information. However, cables may have various faults during use, resulting in system interruptions, equipment damage, and even safety hazards. Understanding the types of cable fau...Read more -
What is a Load voltage regulator ？
In modern power system, voltage stability and reliability are very important. In order to ensure the safe transmission and efficient use of power, On-load Tap Changer Transformer comes into being. It is a special type of transformer that can automatically or manually adjust the output voltage in ...Read more -
Insulated rod AC voltage withstand test method and requirements
In the power system, insulation rod (or insulation rod) is an important safety tool, widely used in the operation and maintenance of high-voltage power equipment. In order to ensure the safety performance of the insulation rod, it is necessary to carry out AC voltage withstand test. In this paper...Read more -
What’s is Oil chromatography ?
Oil chromatography is an important analytical technique, which is widely used in many fields such as chemistry, environmental science and food safety. Its main role is to separate and analyze the different components of complex mixtures, especially in the petrochemical industry, oil chromatograph...Read more -
Differences Between Impedance and Resistance
In electrical engineering and physics, impedance and resistance are two concepts that are often mentioned. Although the two terms are used interchangeably in some contexts, their meanings and applications are significantly different. To gain a deeper understanding of these two concepts, we will e...Read more -
TEV Partial Discharge Detection Principle
The TEV partial discharge detection principle is a non-contact method for detecting partial discharge activity in high-voltage equipment. By receiving and analyzing high-frequency electromagnetic signals generated on the surface of the equipment, the presence and location of any partial discharge...Read more -
What role does SF6 gas leak detector play in the power system
With the gradual improvement of voltage levels in domestic substations, the use of SF6 high-voltage circuit breakers in the power sector is currently growing at a rate of about 15% per year. In the fields of high voltage, ultra-high voltage, and ultra-high voltage switches, SF6 gas has almost bec...Read more -
High voltage switch dynamic characteristic tester technology guiding
Why do we need to first connect the grounding wire and then connect the broken wire when grounding the instrument on site? Answer: During on-site testing, due to the high induced voltage between the fracture of high-voltage switches (especially above 220kV) and the ground, this voltage value is l...Read more -
The difference between High voltage withstand testing and Insulation testing
Voltage withstand test and insulation test are both testing methods for electrical equipment. However, before conducting a voltage withstand test, it is generally necessary to conduct an insulation test because voltage withstand is a destructive test. Only by ensuring that the insulation of the e...Read more -
The significance of measuring the opening and closing time and synchronicity of high-voltage switches
Introduction and Function of High Voltage Switches The opening and closing time and synchronicity of high-voltage switches are used to measure the mechanical performance of high-voltage circuit breakers. They are bridging devices between transformers and electrical equipment, playing an important...Read more -
Cable fault testing steps
1.Before determining cable faults, testers must first determine the nature of the cable fault in order to adopt appropriate working and testing methods, in addition to mastering the performance and operation methods of the machine. Firstly, use a megohmmeter or multimeter to measure the insulatio...Read more -
What are the measurement methods of using a high voltage generator
High voltage generator alias direct high voltage generator or DC high voltage generator, it is specially used to detect the electrical insulation strength and leakage current of power devices. Generally, the use of high voltage generators is to carry out DC voltage withstand test on zinc oxide ar...Read more