110kV-220kV series Rated voltage 9-216KV metal oxide surge arresters (hereinafter referred to as MOA) is used to protect the 110KV power transmission equipment and power system transformer neutral point from atmospheric over-voltage and over-voltage protection of electrical damage.
MOA by the main elements of the series and insulated base and other components. Internal body components using nonlinear metal oxide varistor as a core component, it has excellent voltage characteristics. When the system when the atmosphere over-voltage or over-voltage operation, low resistance resistors showed that the residual pressure is limited MOA allowed value, while absorbing over-voltage energy to provide reliable protection for electrical equipment. MOA at normal operating voltage, the varistor resistance was high, the current flowing through the small MOA, the system plays the role of the insulating spacer.
MOA composite jacket made of high quality silicone rubber as a raw material, so that the products are small, light weight, explosion-proof performance greatly improved, the inherent hydrophobicity of silicone rubber it has a good stain resistance.
Porcelain jacket MOA with a pressure relief device, the internal pressure increases when the MOA failure, explosion-proof device movement, release the internal pressure. Arc transferred from internal to external, external form in porcelain sets short, no guarantee porcelain burst.
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