Description

6 - 220kV Post - type Composite - Housed Metal Oxide Surge Arresters are specialized protective devices engineered for medium - to - high voltage power systems (spanning 6kV to 220kV). Structured as vertical post - type units with composite (typically silicone rubber) housings, they integrate metal oxide varistor (MOV) technology. Installed in substations, distribution networks, and alongside key equipment like transformers and circuit breakers, these arresters suppress overvoltages from lightning, switching operations, or system faults. By clamping surge voltages and diverting excess currents to the ground, they safeguard power system integrity, ensuring stable operation and preventing equipment damage across 6 - 220kV grids.

Features

• Wide Voltage Range Compatibility：Covers 6kV to 220kV systems, with rated voltages precisely matched to diverse medium - high voltage grid needs. Adapts to both distribution and sub - transmission networks, providing uniform surge protection across multiple voltage classes.

• Composite Housing Advantages：The composite (silicone rubber) enclosure offers superior performance: excellent hydrophobicity resists pollution and moisture, reducing flashover risks; high mechanical strength withstands wind, seismic forces, and thermal cycles; lightweight design simplifies installation vs. traditional porcelain, cutting labor and transport costs.

• Post - type Structural Design:Vertical post - type layout enables space - efficient installation in substations, aligning with standard insulator/post mounting configurations. Simplifies integration into existing grid setups, reducing spatial requirements and facilitating maintenance access.

• Low Maintenance & Long Lifespan:Composite housing resists aging, UV degradation, and chemical corrosion, lowering maintenance frequency. Built - in thermal stability and MOV self - healing properties (to an extent) extend service life, ensuring reliable protection for 15 + years with minimal upkeep.

• Compliance & Safety:Meets international standards (e.g., IEC 60099 - 4, IEEE C62.11) for surge arresters. Undergoes rigorous testing for impulse current withstand, thermal stability, and environmental endurance, guaranteeing safe operation in harsh grid conditions.

• Surge Current Diversion Efficiency:Effectively diverts large surge currents (from lightning/switching) to the ground, limiting overvoltages to levels safe for connected equipment (transformers, cables). Reduces downtime risks and equipment damage, enhancing overall grid resilience.

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