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The difference between 3P+N structure and 4P
Jan 30 , 2024
Some lightning protector manufacturers on the market name 4P products as 3PN. 3P+N and 4P circuit breakers are also four-level circuit breakers (consisting of four pairs of input/output terminals). Their difference lies in the zero (N) line terminal. superior. Among them, some of the 3P+N terminals are straight-through and cannot be disconnected, and some can be disconnected, but the original part...
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Working principle of intelligent ground resistance tester
Feb 18 , 2024
The ground resistance tester mainly measures the ground resistance of the equipment or facility under test by testing circuits, voltage measurement, and current measurement. By accurately measuring the value of ground resistance, you can ensure the safe operation of electrical equipment and protect personnel from electric shock and equipment damage. For example: 1. Voltage measurement: The ground ...
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Why should surge protectors be installed on photovoltaic systems?
Feb 21 , 2024
As many house owners decide to install photovoltaic equipment on their roofs, and industry and commerce are also investing more in photovoltaic equipment, these equipment are usually erected on large rooftops, public buildings or unused open areas. Because they are mostly outdoors, they are extremely vulnerable to the threat of lightning when a thunderstorm occurs, which has serious consequences f...
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About Uc value in surge protector
Feb 26 , 2024
SPD surge protector Uc means "maximum continuous operating voltage" and is one of the key parameters of lightning surge protectors. The main Uc values of lightning surge protectors currently on the market are 255V, 275V, 320V, and 385V. , 420V, etc. Many customers don’t know how to choose or what standards they are based on when choosing. The Uc of the power surge protector refers to the maximum c...
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The price of a surge protector is mainly determined by the quality
Mar 04 , 2024
A surge protector is an important power device used to protect electrical equipment from damage due to overvoltage surges. It detects sudden increases in voltage on a circuit and directs it to the ground, thus protecting other equipment from damage. As a critical safety device, surge protectors are widely used in various industries. The price of a surge protector is determined by many factors, suc...
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Application of surge protectors in photovoltaic power plants
Mar 11 , 2024
Photovoltaic surge protectors are mainly used in the following scenarios in photovoltaic systems: 1. Surge protection: Mainly used in low-voltage power supply systems of power generation companies and power consumption companies. It is installed in low-voltage incoming cabinets, power supply cabinets, distribution cabinets, distribution boxes, etc., to protect electrical equipment from lightning s...
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Lightning protection grounding construction process
Mar 18 , 2024
Jinli is a company integrating R&D, production, and sales. Since its establishment in 2006, it has 18 years of experience producing surge protectors. The lightning protection department consists of a technical department and a construction department. Among them, there are 10 technicians and 20 construction workers. Mainly responsible for lightning protection and grounding construction project...
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Frequently Questions about the Construction of Lightning Protection Projects
Mar 26 , 2024
Lightning protection projects and facilities must be installed inside and outside the building to prevent lightning intrusion. However, problems of varying degrees will occur during the actual construction process, including the following situations; 1. Construction not according to drawings According to regulations, during the construction of buildings, construction should be carried out in stric...
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