Guangdong Yufeng Industries Co., Ltd.
Guangdong Yufeng Industries Co., Ltd.

500kV Surge Arrester

500kV surge arrester adopts lightning protection components with tensile strength and anti-ice insulators in series. Under normal circumstances, the anti-ice insulators bear the operating voltage of the line. When lightning strikes, the lightning protection components are used to limit overvoltage and power frequency continuous current to prevent lightning tripping. It also has the functions of insulating support, lightning protection and anti-ice flash.

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Specifications of 500kV High Voltage Surge Arrester

Nominal System Voltage500KV
Application PlaceHigh Voltage system
Maximum System Voltage550
Rated Voltage (KV)468
Nominal Discharge Current (kA)20
Line Discharge Class5
Energy Absorption Capacity KJ/KV at Ur13
2ms Long Duration current impulse (A)1600
Short Circuit Current Rating (kA)65
Material of HousingSilicone rubber/procelain
Structure Design1.Fiber glass filament Mesh winding core / Fiber glass Tube, and then injection silicon rubber directly.
2. Assambly with Porcelain housing
Pressure release deviceWith

Technical Parameters of 500kV High Voltage Surge Arrester

Structure height4500~4950mm
50% lightning impulse discharge voltage1760~1780kV
Power frequency wet withstand voltage≥640kV
2ms square wave withstand current≥1500A (320J/cm3)
Ice-covered flashover voltage (level Ⅳ pollution, 271mm ice thickness)>510kV
Tensile load210kN

Advantages of 500kV High Voltage Surge Arrester

  • At the same time, it has the functions of lightning protection, icing protection and pollution flashover for transmission lines.

  • It can replace ordinary line insulators and line arresters, and is easy to install.

  • High-gradient, large-flow ZnO resistors are used, and the structural size meets the requirements of the tower window.

Applications of 500kV High Voltage Surge Arrester

The 500kV lightning protection and anti-icing insulators were put into network operation in the 500kV Changmin line in Hunan Province in September 2018 in the heavy ice section of the 500kV Changmin line (Shaoyang-Loudi, 30km line section), and the 500kV Changmin line reconstruction section has occurred in recent years. Once, after applying 500kV lightning protection and anti-icing insulators, after many rounds of thunderstorms and ice-covered weather, there has been no accident of tripping and power failure of transmission lines caused by lightning strikes and ice-covered weather.

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