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BRITISH STANDARD|BS EN 60168:1995 IEC 60168:1994(1)

BRITISH STANDARD|BS EN 60168:1995 IEC 60168:1994(1)
BS 3297-2:1993
Characteristics of
indoor and outdoor
post insulators for
systems with nominal
voltages greater
than 1000 V —
(Implementation of
UDC 621.315.624:621.3.027.4

Committees responsible for this
British Standard
The preparation of this British Standard was entrusted by the Power Electrical
Engineering Standards Policy Committee (PEL/-) to Technical Committee
PEL/70, upon which the following bodies were represented:
Association of Consulting Engineers
Association of Manufacturers Allied to the Electrical and Electronic Industry
(BEAMA Ltd.)
British Industrial Ceramic Manufacturers’ Association
Electrical and Electronic Insulation Association (BEAMA Ltd.)
Electricity Association
Transmission and Distribution Association (BEAMA Ltd.)
The following bodies were also represented in the drafting of the standard,
through subcommittees and panels:
BECCAMA — BEAMA Electrical Cable Connector and Accessories
Manufacturers’ Association

National foreword
This British Standard has been prepared under the direction of the Power
Electrical Engineering Standards Policy Committee. It implements
Harmonization Document HD 578 S1 published by the European Committee for
Electrotechnical Standardization (CENELEC).
This British Standard is identical with IEC 273:1990 Characteristics of indoor
and outdoor post insulators for systems with nominal voltages greater
than 1 000 V, published by the International Electrotechnical Commission (IEC),
which has been endorsed by CENELEC as HD 578 S1.
This British Standard supersedes BS 3297-2:1982 which is withdrawn.
A special national condition applicable to Germany is given in Annex ZB.
The graphic signs, symbols and letters used may be found in the following
National annex NA gives details of International Standards quoted in this
standard for which there is an identical or technically equivalent British
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.
BS 3939 Graphical symbols for electrical power, telecommunications and
electronics diagrams
Part 1:1986 General Information, general index
Part 2:1985 Symbol elements, qualifying symbols and other
symbols having general application
Part 3:1985 Conductors and connecting devices
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii,
the HD title page, pages 2 to 30, an inside back cover and a back cover.
This standard has been updated (see copyright date) and may have had
amendments incorporated. This will be indicated in the amendment table on the
inside front cover.

HD 578 S1
July 1992
UDC 621.315.624:621.3.027.4
Descriptors: Insulators, characteristics, systems, nominal voltages greater than 1 000 V
English version
Characteristics of indoor and outdoor post insulators for
systems with nominal voltages greater than 1 000 V
(IEC 273:1990)
Caractéristiques des supports isolants
d’intérieur et d’extérieur destinés à des
installations de tension nominale
supérieure à 1 000 V
(CEI 273:1990)
Kenngrößen von Innenraum- und
Freiluft- Stützisolatoren für Systeme mit
Nennspannungen über 1 000 V
(IEC 273:1990)
This Harmonization Document was approved by CENELEC on 1991-09-23.
CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for implementation of this
Harmonization Document on a national level.
Up-to-date lists and bibliographical references concerning national
implementation may be obtained on application to the Central Secretariat or
to any CENELEC member.
This Harmonization Document exists in three official versions (English,
French, German).
CENELEC members are the national electrotechnical committees of Austria,
Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B-1050 Brussels

Section 1. General

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