High-voltage surge arresters , as the name suggests, are an arrester used under high voltage. We also call a high voltage surge arrester a voltage protector because of its role. High-voltage surge arresters are a kind of machinery and equipment that only appeared in recent years. It only appeared with actual needs. Then, how should the high-voltage arrester be installed? What problems should be noticed in the installation process? Today, I will introduce you to the installation precautions of the high-voltage arrester. Interested friends may not miss it! High voltage arrester High-voltage arresters are also called lightning arresters, which are also called surge protectors and overvoltage protectors by many professionals. It is divided into two types: power lightning protector and signal lightning protector. This is a technology that people use modern electricity and other various technologies to prevent the equipment from being damaged by lightning. In the process of lightning protection, the lightning energy in the arrester is absorbed and released and will not cause short circuit or damage to our production and life. High voltage arrester model The more commonly used lightning arrester: HY5WZ-17/45, HY5WS-17/50 Others are: HY5WS-7.6/30, HY5WS-10/30, HY5WS-12.7/50, HY5WS-17/50, HY5WZ-7.6/27 High voltage arrester function Next, let's look at the role of high-voltage arresters. After the relevant understanding, there are two main functions of the high voltage arrester. The first is to protect electrical equipment. Because in many cases, our electrical equipment will receive instantaneous high-voltage shocks, so we need to use high-voltage arresters to protect electrical equipment. The second is to protect electrical appliances from lightning damage. The high voltage arrester can be used as a lightning rod to effectively protect the safety of electrical appliances. Principle of high voltage arrester In fact, the high-voltage arrester is equivalent to an insulator under normal operating voltage, and its internal current is only in the microampere range. Under overvoltage conditions, the resistance of the high voltage arrester will decrease rapidly, and the internal current will increase instantly. Thousands of times larger, that is to say at this time the high-voltage arrester is in the conduction state, the release of a certain voltage can effectively control the voltage on the transmission and transformation equipment. According to the current market situation, high-voltage surge arresters almost always connect the system to the earth and are connected in parallel with the protected equipment. When it is not working, this connection method is equivalent to an open circuit, and it is equivalent to a short-circuit circuit when working. The excessive voltage is released to the earth. After the thunder and lightning passes, the high-voltage arrester can quickly return to the normal state, and the resistance becomes larger and the discharge is stopped. High voltage arrester classification According to the order of its development and internal structure, high-voltage surge arresters can be divided into protection gap arresters (discharge gap arresters), pipe arresters, valve arresters, magnetic lightning arresters, zinc oxide surge arresters, etc., among which the main component of the protective gap arrester is the discharge electrode. The materials are mainly used to limit the atmospheric overvoltage, which is mainly used for protection of power distribution systems, lines, and substations. The valve arrester is connected with the spark gap and the non-linear resistor in series, and the spark gap separates the live part from the valve piece, so that the resistance value of the valve piece is related to the passing current, that is, the larger the current, the more the resistance becomes. Small; zinc oxide arrester is mainly composed of a plurality of zinc oxide resistors, so called zinc oxide arrester, but the number of zinc oxide required to determine the voltage, zinc oxide arrester has a very good nonlinear volt-ampere characteristics. Both valve arresters and zinc oxide surge arresters are used to protect substations or power plants. When the voltage is less than 220 kV, the system will protect the equipment by limiting the voltage. When the voltage is too high, the system can also be used to limit To control excessive voltage to protect equipment, in fact, different high-voltage surge arresters can be used in different occasions according to their own different characteristics. High Voltage Arrester Installation Notes About arrester installation considerations We can learn from the following aspects: First, on the acceptance inspection of civil engineering and equipment installation project, we must check whether the arrester elevation meets the design requirements, not too high or too low, Secondly, guarantee the verticality of the bracket of the high voltage arrester. Secondly, during the re-installation process, we must check that all parts of each arrester should be complete and placed in a dry environment. Before installation, we have to test whether the conductance or leakage current meets the technical requirements. Install the high-voltage arrester body in strict accordance with the instructions for installation. The use of high voltage arrester precautions High-voltage arresters are a very important thing. We must pay attention to some problems in use. The first is to install the high voltage arrester correctly. Improper installation will cause some damage. The second thing to notice is the regular maintenance of high voltage surge arresters. Because the use of a long time will cause the damage of high-voltage arresters or other problems, we must carry out regular maintenance to be prepared. Editor's summary: High-voltage surge arresters have a very important role for us, and he is a more dangerous thing, so we must pay attention to some issues when using them, to prevent accidents. For the high-voltage arrester and its role, we still have any questions that we don't understand. Arrester House Decoration Precautions Home Decoration Precautions Decoration Precautions House Decoration Precautions High Voltage Surge Arrester The AIN crystal is a covalently bonded compound with a [AIN4] tetrahedron as a structural unit, and has a wurtzite structure and is a hexagonal system. Chemical composition AI 65.81%, N 34.19%, specific gravity 3.261g / cm3, white or grayish white, single crystal colorless and transparent, sublimation decomposition temperature under normal pressure is 2450 °C. It is a high temperature heat resistant material. Thermal expansion coefficient (4.0-6.0) × 10 -6 / ° C. Polycrystalline AIN has a thermal conductivity of 260W/(MK), which is 5-8 times higher than alumina, so it has good thermal shock resistance and can withstand extreme heat of 2200 °C. In addition, aluminum nitride is not attacked by aluminum liquid and other molten metals and gallium arsenide, and particularly has excellent corrosion resistance to molten aluminum liquid. 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