Brown-Glazed Porcelain Line Post Insulator

The 57 series supports conductors on overhead lines while providing insulation to ground, and it can be used on straight sections, line corners, or equipment lead-support positions.
Brown glaze provides the specified surface finish for projects that need compatibility with existing electrical porcelain appearance or model systems.
The Brown-Glazed Porcelain Line Post Insulator combines line support and insulation within a porcelain post structure.

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Product Specifications

Parameter	Specification
Model	57 Series
Creepage Distance	Approx. 356–1145 mm
Dry Arcing Distance	Approx. 165–438 mm
Rated Cantilever Strength	12.5 kN
Lightning Impulse Withstand	Approx. 150–380 kV

Mechanical and Insulation Range

Rated cantilever strength is 12.5 kN.

Creepage distance across the series is approximately 356–1145 mm, with dry arcing distance approximately 165–438 mm.

Lightning impulse withstand is approximately 150–380 kV; power-frequency dry/wet withstand is approximately 80/60 to 175/150 kV.

Different specifications weigh approximately 5.2–19.5 kg.

Existing-Line Customization

OEM/ODM production is supported from project drawings, samples, and technical requirements.

For replacement or equipment-matching orders, buyers can confirm creepage distance, structural dimensions, insulation level, and installation interface against the existing line.

This approach is suitable for new line projects, new equipment matching, or replacement of an established specification.

Testing and Traceability

The production base has bending-test equipment for mechanical checks, together with creepage-distance and electrical test equipment for external-insulation and electrical performance inspection.

Quality control covers raw materials, production stages, and finished products.

After-sales support is handled by designated personnel, as stated in the supplied FAQ.

Export Order Handling

Export packaging is configured according to the project and the receiving requirements of the destination country.

Standard orders generally require 30 days for production, while customized products generally require 45 days.

Production progress can be shared during order execution, and EXW, FOB, or DDP terms are available.

For the Brown-Glazed Porcelain Line Post Insulator, buyers should provide the existing line specification or drawing when dimensional or installation matching is required.

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