Technical
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What are the reasons for the heat generation of power cables during operation?
When an electrical cable is subjected to a certain load current, it will definitely generate heat. As the load current increases, the surface temperature of the cable will rise. If not dealt with in time, the consequences can be imagined. For example, for polyvinyl chloride (PVC) cables, the uppe...Read more -
How to choose between single-phase, three-phase and six-phase for the relay protection tester?
In the process of selecting relay protection testing instruments, the number of output phases is the core factor that technicians need to consider first. The number of output phases is not merely a parameter of the number of channels, but directly defines the applicable scope of the equipment, th...Read more -
How to use the insulation resistance tester
In the new century, the power industry is faced with both opportunities and challenges. The key issue is how to enhance the safety index of power work. The insulation resistance tester, as a safety inspection device for testing whether electrical equipment is insulated or has faults, it is very n...Read more -
The test steps for the withstand voltage of the DC high-voltage generator
The DC high-voltage generator plays a role in safety protection in the field of power devices. It is a device specifically used to test the electrical insulation strength and leakage current of power devices. To understand the insulation preventive measures of related equipment, it is necessary t...Read more -
The main application scope of the AC withstand voltage test device
The AC Withstand Voltage Test Equipment is a specialized high-voltage testing device used to measure the insulation strength of electrical equipment. It is widely applied in the power system, industrial manufacturing, scientific research and testing, etc. Here are its main application scopes and ...Read more -
The core principle and technology of the switchgear partial discharge detection device
What is the partial discharge (PD) in a switch cabinet? Inside the switch cabinet, due to defects in the insulating materials, aging, or installation issues, the electric field becomes highly concentrated in certain areas. When the electric field strength at this location exceeds the tolerance li...Read more -
Main Categories and Applications of AC/DC Withstand Voltage Testers
In the production, manufacturing, operation, and maintenance of electrical equipment, insulation safety is the core indicator for ensuring the stable and reliable operation of the equipment and avoiding personal safety risks. The AC/DC withstand voltage tester is the core specialized detection in...Read more -
Main testing functions of the mechanical characteristic tester
The switch mechanical characteristic tester is primarily used to measure various mechanical performance indicators during the opening and closing operations of high-voltage circuit breakers. In power system operation, high-voltage circuit breakers play a dual core role: first, they connect and in...Read more -
The difference between series resonance and parallel resonance
In a series circuit consisting of capacitors, resistors and inductors, it is common for the voltage, power supply and current to be in phase. This situation is usually referred to as series resonance. The most prominent feature is that the current, voltage and power supply are in phase, and the c...Read more -
Daily maintenance and troubleshooting methods for minor faults of the variable frequency resonance test equipment
The main components of a variable frequency resonance device commonly used in the power industry include a frequency and voltage adjustable power supply, isolation transformer, reactor, excitation transformer, and capacitive voltage divider. The series resonance connection is formed by the reacto...Read more -
The usage method and maintenance precautions of the high-current current booster unit
The usage method of the high-current current booster: When conducting the high current test, correctly connect the working circuit according to the circuit diagram of this product. According to the size of the output current, select the appropriate position of the large and small current range s...Read more -
Insulation oil dielectric loss tester oil cup cleaning method
Before conducting the measurement with the insulating oil dielectric loss tester, it is essential to clean the oil cup. This step is of great significance. Because insulating oil has extremely sensitive reactions to even the slightest contamination. Therefore, it must be carried out strictly in a...Read more