Overvoltage protector is a device that can not only limit atmospheric overvoltage and operating overvoltage caused by various vacuum switches, but also protect phase-to-phase overvoltage. It has a wide range of applications. It is suitable for different types of KYN, XGN, GBC, JYN, GZS and other 35KV and below complete switch cabinets. It can also be directly used in small box-type substations, widely used in electric power, metallurgy, chemical industry, and coal. , Light industry, construction, electrified railway and other industries. How does the overvoltage protector work? The over-voltage protector is made of flame-retardant and aging-resistant silicone rubber as the shell material, and four silicone rubber high-voltage cables and zinc oxide valve discs are drawn out from the inside to form a one-time vulcanization molding. Except for the four wire noses, which are bare conductors, the other parts are The insulator is closed, and the over-voltage protector uses the discharge gap to divide the voltage of the zinc oxide valve plate, which reduces the operating shock protection residual voltage and realizes the protection of the operating over-voltage. Moreover, after the overvoltage protector is connected to the power grid, it is beneficial to destroy the resonance conditions, and the resistance generates damping oscillation, which is beneficial to reduce the amplitude of the resonance overvoltage. The principle of overvoltage protection between phases of overvoltage protector: When overvoltage occurs in any two of the three phases of A, B, and C, the corresponding two phases of the protection units in P1, P2, and P3 pass through their respective gaps. After the components are connected in parallel, they are protected by P4 discharge. The zinc oxide valve of the overvoltage protector is turned on to limit the voltage. After the overvoltage disappears, the discharge gap component automatically recovers due to the small leakage current of the zinc oxide valve. Overvoltage protector relative to ground overvoltage protection principle: when any one of the three phases A, B, and C has an overvoltage with the ground, the corresponding phase of the P1, P2, P3 protection unit and the ground phase P4 pass through The respective gap components are connected in series for discharge protection.

AZ-TBP overvoltage protector