Toughened Glass Insulator

Model U420KN has a rated electromechanical failing load of 420 kN and is intended for overhead-line applications with very high mechanical loading.
It can be used in suspension or tension strings where conductor tension and overall line mechanical requirements call for this load class.
The Toughened Glass Insulator should be selected against actual line loading; the supplied FAQ specifically identifies it as a high-mechanical-grade product rather than a choice for ordinary low-load lines.

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Product Specifications

Parameter	Specification
Model	U420KN
Rated Electromechanical Failing Load	420 kN
Structural Height	Approx. 205 mm
Disc Diameter	Approx. 360 mm
Minimum Nominal Creepage Distance	Approx. 550 mm

Large Disc Geometry

Disc diameter is approximately 360 mm and structural height approximately 205 mm.

Minimum nominal creepage distance is approximately 550 mm.

These dimensions provide defined references for checking string length, available installation space, and the intended line-hardware arrangement.

The confirmed connection mark is 28R.

Visual Inspection Characteristic

The toughened-glass body provides direct visual access to the condition of the insulating unit.

The supplied product information notes that self-shattering status can assist with identifying a zero-value unit during line inspection.

Individual unit weight is approximately 15 kg, which should be considered when planning string assembly and handling.

High-Load Project Coordination

Production can follow line design drawings, connection dimensions, and project technical requirements.

Technical confirmation may cover mechanical class, connection mark, string length, and matching hardware.

A sample can be supplied before mass production for technical confirmation where required.

Release and Export Preparation

Quality management covers raw materials, production, finished-product inspection, and after-sales traceability, with mechanical, electrical, and dimensional inspection equipment available.

Finished products receive 100% inspection before packing, and third-party inspection is accepted.

Export packing is arranged around product size and destination receiving requirements. Standard production is generally 30 days and customized production 45 days, with progress updates available by photo or video.

For the Toughened Glass Insulator, state the required string arrangement and mechanical load in the initial inquiry.

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