With the continuous expansion of the number and scale of electronic equipment in industrial control system, electronic equipment generally has the weakness of low insulation strength and poor overvoltage tolerance. When it is attacked by lightning electromagnetic pulse, especially lightning electromagnetic pulse, it will have different degrees of operation failure, Therefore, the lightning protection measures of multi-level shunt (no less than three-level lightning protection) should be taken for the electronic equipment in industrial buildings to ensure the safe and stable operation of production equipment.
See more +With the rapid development of modern science and technology, radio and television transmission, transmitting stations, electronic equipment and communication equipment are increasing, audio and video signal transmission lines exposed outdoor are longer and longer, and the probability of lightning stroke is greatly increased. In addition, the working voltage of integrated circuit in modern electronic equipment is lower and lower, and the distance between lines of printed circuit board is smaller and smaller, which makes the equipment lightning resistant The force is getting weaker and weaker.
See more +As the main part of the subway is located underground, people often ignore the lightning and surge protection. In fact, we can find many sensitive electrical and electronic equipment in many subway facilities and systems, including power supply system, communication system, signal system, escalator and elevator system, automatic fare collection system (AFC), safety door system, fire alarm system (FAS), environment and equipment monitoring system (BAS), etc. These power supply system and information technology system related equipment, a large number of complex, they are to ensure the safety of the subway system and the normal operation of the most important component.
See more +Lightning protection design of security monitoring system is rarely used in practical application, but this is a very important aspect, especially for outdoor monitoring system, where lightning weather often occurs, lightning protection design should be done. First of all, we should accurately understand the system composition of the security monitoring system, and then accurately analyze the main causes of lightning damage to the security monitoring system and the possible invasion ways of lightning overvoltage.
See more +Solar photovoltaic power generation system is a new type of power generation system that converts light energy into usable electric energy, which is becoming more and more important in the field of new energy power generation. Due to the government's strong policy support and subsidies, domestic solar photovoltaic power plants are developing rapidly. At present, they are mainly divided into independent power generation and grid connected power generation. The installation location and environment of solar photovoltaic power generation system is special, and its equipment is very vulnerable to lightning.
See more +Wind power generation is the most mature technology and the largest scale renewable clean energy in China. The single unit capacity of wind turbine is increasing. The height, installation position and internal sensitive electronic equipment of wind turbine determine that wind turbine is vulnerable to lightning stroke. According to the survey, more than 4% of the wind turbines suffer from lightning damage, and more than 40-50% of the damage is the control system and blades of the wind turbine. It will take a long time from damage, repair, maintenance to the final re-use, which will affect the efficiency of wind power generation.
See more +Traditional automobile, more and more global energy crisis intensifies, leading to oil resource consumption and waste emissions, causing air pollution, lightning arresters, global warming, and so on. Every country and automobile manufacturing enterprises have realized that this is the future development direction in the automotive field. Energy saving and emission reduction, research and production of rechargeable electric vehicles will be a good way to solve this problem.
See more +Petroleum refining and chemical enterprises are vulnerable to lightning damage due to their large area and exposed system components. Special protection measures are needed to protect refineries from these threats, so as to avoid shutdown or damage, or even damage to refineries.
See more +The way to protect outdoor LED lighting from induced surge impact damage is to block high voltage / current transient interference into the lighting fixture. Therefore, a surge protective device (SPD) can be used in outdoor LED lighting applications to suppress the surge energy and minimize the surge impact on lighting equipment.
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