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  • BSI
    BS EN IEC 60305:2021 Insulators for overhead lines with a nominal voltage above 1 000 V. Ceramic or glass insulator units for AC systems. Characteristics of insulator units of the cap and pin type
    Edition: 2021
    $316.70
    / user per year

Description of BS EN IEC 60305:2021 2021

This International Standard applies to string insulator units of the cap and pin type with insulating parts of ceramic material or glass, intended for AC overhead lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations.

This document applies to string insulator units of the cap and pin type either with ball and socket couplings or with clevis and tongue couplings.

This document applies to string insulator units for use on overhead lines in clean areas and polluted areas. For use in areas characterized by very heavy pollution levels and for other particular or extreme environmental conditions, it may be necessary for certain dimensions to be changed and insulator units having different creepage distances, spacing and forms may be preferred (for example, flat profile, hemispherical etc.). Insulators for use on DC systems may also need different dimensions. In any case, it is applicable that the standardized mechanical characteristics of this document and coupling sizes are retained.

The object of this document is to prescribe specified values for the mechanical characteristics and for the main dimensions of string insulator units of the cap and pin type.

The power frequency, lightning impulse and puncture withstand voltages of string insulator units are not specified in this document. IEC 60383-1 gives the electrical characteristics which define string insulator units; their values are agreed between purchaser and manufacturer.

Ball and socket couplings are covered by IEC 60120, clevis and tongue couplings by IEC 60471.

NOTE For the definition of site pollution severity see IEC TS 60815-1.



Standard NumberBS EN IEC 60305:2021
TitleInsulators for overhead lines with a nominal voltage above 1 000 V. Ceramic or glass insulator units for AC systems. Characteristics of insulator units of the cap and pin type
StatusDefinitive
Publication Date2021-03-03
ReplacesBS EN 60305:1996
Identical National Standard OfEN 60305 Ed.5.0, IEC 60305 Ed.5.0
DescriptorsDesignations, Cap-and-pin insulators, Ceramics, Marking, Solid electrical insulating materials, Electrical insulation devices, Electrical faults, Electric load, Overhead power-line fittings, Overhead power lines, Failure (mechanical), Leakage paths, Glass, Diameter, Electric insulators
ICS29.080.10 Insulators, 29.240.20 Power transmission and distribution lines
CommitteePEL/36
ISBN978 0 580 99192 9
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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