Safe use and maintenance of high-voltage arrester manufacturers
Insulators play two basic roles in overhead transmission lines. High-voltage arresters are supporting wires and preventing current from returning to the ground. These two functions of disc type suspension insulators must be guaranteed. Insulators should not be caused by changes in the environment and electrical load conditions. Various electromechanical stresses cause failure, otherwise the insulator will not have a significant effect, which will damage the use and operating life of the entire line.
Surge arrester, also known as: surge arrester, a high-voltage insulator that can release lightning or power system operating over-voltage energy, protect electrical equipment from instantaneous over-voltage hazards, and can cut off the continuous current, so as not to cause a short circuit to the ground of the system. The arrester is usually connected between the live wire and the ground, and is connected in parallel with the protected equipment. When the overvoltage value reaches the specified operating voltage, the arrester will act immediately, and the charge will flow to limit the amplitude of the overvoltage and protect the equipment insulation; after the voltage value of the high-voltage fuse is normal, the arrester quickly restores its original state to ensure the normal power supply of the system. Closely related to the degree of insulator contamination is the magnitude of its leakage current. Therefore, high-voltage load switches have engineering practical significance for the detection of high-voltage insulator leakage current.
Lightning arrester manufacturers are equipment used in substations to protect equipment from lightning shock waves. High-voltage wall bushing. When the lightning shock wave transmitted into the substation along the line exceeds the protection level of the arrester, the high-voltage current-limiting fuse arrester discharges first. The high-voltage wall bushing and the lightning current are safely introduced into the earth through a good conductor. The grounding device is used to make The lightning voltage amplitude is limited to the lightning impulse level of the protected equipment, so that the electrical equipment is protected. According to the sequence of their development, lightning arresters can be divided into: protective gap-the simplest form of arrester; tube-type arrester-also a protection gap, but it can extinguish the arc after discharge; valve-type arrester-is a single discharge The gap is divided into many short series gaps, and nonlinear resistance is added at the same time, which improves the protection performance; magnetic blown arrester-utilizes the magnetic blown spark gap to improve the arc extinguishing ability, and the bell-type anti-pollution suspension insulator also has Limit internal over-voltage capability; zinc oxide arrester-utilizes the ideal volt-ampere characteristics of zinc oxide valves (high non-linearity, high-voltage fuses show low resistance characteristics at high currents, overhead power lines use tension insulators to limit The voltage on the arrester has high resistance characteristics under normal power frequency voltage). The high voltage load switch has the advantages of no gap, no freewheeling and low residual voltage. It can also limit internal overvoltage and is widely used
Yichang Hengyuan Technology Co., Ltd. is a professional manufacturer of European-style cable connectors, plug connectors, cable branch boxes, American elbows, high-voltage vacuum circuit breakers, high-voltage load switches, lightning arresters, zinc oxide arresters, tank arresters, overvoltage protectors, Counters, monitors, heat-shrinkable cable accessories, cold-shrinkable cable accessories, T-heads, wall bushings, European cable accessories, American cable joints, transformer neutral point protection devices, fuses, isolating switches, PT cable heads, elbows Manufacturers of type cable joints, 10kV outdoor terminals, switch cabinets, cable intermediate joints, cable accessories and other products
