Materials Used in Prefabricated Substations

The main materials used for the enclosures of prefabricated substations include aluminum-zinc coated steel sheets, stainless steel, cold-rolled steel sheets, composite panels, and fiberglass cement. Different materials are suitable for different environments and needs, offering their own protective and performance advantages.

 

Main Material Types and Characteristics:

Aluminum-zinc coated steel sheets: Offer superior corrosion resistance compared to ordinary steel sheets, extending equipment lifespan by more than three times. Commonly used in outdoor prefabricated substations, suitable for harsh environments such as humidity and salt spray.

 

Stainless steel sheets: Utilize high-quality stainless steel sheets (such as 304 or 316), significantly improving corrosion resistance, especially suitable for highly corrosive areas such as coastal areas and chemical industrial zones. Some products employ a honeycomb double-layer structure, combining heat insulation and heat dissipation functions.

 

Cold-rolled steel sheets: Treated with electrostatic spraying to form a durable protective layer, offering lower cost and widespread use in economical or urban power distribution scenarios. The enclosure protection rating can reach IP54, providing good dust and water resistance.

 

Composite Panels/Non-metallic Materials

Glass Fiber Cement: High mechanical strength, impact resistance, sun exposure resistance, flame retardant, and moisture-proof; suitable for underground installations or locations with high aesthetic requirements (such as parks and squares).

 

Flame-retardant Composite Materials: Used in European-style substations, offering excellent thermal insulation and fire resistance, and blending harmoniously with the surrounding environment.

 

Color Steel Plates and Sandwich Panels: Primarily used in 12kV and above prefabricated substations; the outer layer uses aluminum alloy profiles or imported composite panels, offering a lightweight structure and good corrosion resistance.