Glass Disc Insulator

Model U70BL is a standard toughened-glass suspension unit for conventional overhead-line suspension and tension insulation.
Its rated electromechanical failing load is 70 kN, a defined reference for matching the unit with line positions in the corresponding mechanical class.
The Glass Disc Insulator uses a standardized disc format suitable for consistent insulator-string and spare-part configuration.

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Product Specifications

Parameter	Specification
Model	U70BL
Rated Electromechanical Failing Load	70 kN
Disc Diameter	255 mm
Structural Height	146 mm
Creepage Distance	320 mm

Dimensions for String Matching

Disc diameter is 255 mm, structural height is 146 mm, and creepage distance is 320 mm.

Connection mark is 16W, which should be checked against the intended fittings before ordering.

Individual unit weight is approximately 4.0 kg.

These mechanical and dimensional details are useful when replacing an existing unit or configuring a new string to a fixed layout.

Electrical Reference Data

Power-frequency wet withstand is approximately 40 kV.

Lightning impulse withstand is approximately 100 kV.

Buyers can review these electrical values alongside the 70 kN mechanical rating rather than selecting purely by disc diameter.

Standard and Drawing-Based Orders

Production support is available according to line technical requirements, connection hardware, and customer drawings.

Connection mark, disc diameter, structural height, and mechanical grade can be confirmed before mass production.

Sample validation is supported where the buyer wants to check compatibility with an existing string or hardware assembly.

Batch Release and Spare-Part Planning

Quality control covers raw materials, production, finished-product inspection, after-sales service, and traceability.

Finished products undergo 100% inspection before packing, and third-party inspection can be arranged according to project requirements.

Export packing follows destination-country receiving requirements. Standard products generally require 30 days and custom products 45 days; progress can be shared through photos or video.

EXW, FOB, and DDP terms are available.

For the Glass Disc Insulator, provide the existing connection mark and string dimensions when the order is intended for replacement stock.

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