HD 474 S1:1986

Dimensions of ball and socket couplings of string insulator units

Publication date:   Jul 30, 2004

General information

99.60 Withdrawal effective   Aug 26, 2023

CENELEC

CLC/SR 36 Insulators

Harmonization Document

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Scope

Applies to string insulator units of the cap and pin and long rod types and their associated metal fittings for overhead lines. Includes six standard sizes designated by the nominal pin diameters which form the basis of the standard. Defines each standard size by the dimensions of the pin ball, of the socket and the hook-on 'Go' gauge. States dimensions of twin-balled pins for coupling of two sockets. Tabulates clearance and locking conditions. Appendices give information on extreme positions of the pin ball in the socket as well as on gauges for checking dimensions.

Life cycle

NOW

WITHDRAWN
HD 474 S1:1986
99.60 Withdrawal effective
Aug 26, 2023

REVISED BY

PUBLISHED
EN IEC 60120:2020

Relations

Adopted from IEC 60120:1984 IDENTICAL