IEC 61466-1:2016 ED2

Composite string insulator units for overhead lines with a nominal voltage greater than 1 000 V - Part 1: Standard strength and end fittings

Publication date:   May 18, 2016

General information

60.60 Standard published   May 18, 2016

IEC

TC 36

International Standard

29.080.10   Insulators | 29.240.20   Power transmission and distribution lines

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Scope

IEC 61466-1:2016 is applicable to composite string insulator units for a.c. 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 or on electric traction lines. This standard applies to string insulator units of composite type with ball, socket, tongue, clevis, Y-clevis or eye couplings, or a combination thereof. The object of this standard is to prescribe specified values for the mechanical characteristics of the composite string insulator units and define the main dimensions of the couplings to be used on the composite string insulator units in order to permit the assembly of insulators or fittings supplied by different manufacturers and to allow, whenever practical, interchangeability with existing installations. It also defines a standard designation system for composite string insulator units. This edition includes the following significant technical changes with respect to the previous edition:
a) Addition of strength classes reflecting UHV practice;
b) Inclusion of Corrigendum 1:2008 for Y fitting hole dimensions.

Life cycle

NOW

PUBLISHED
IEC 61466-1:2016 ED2
60.60 Standard published
May 18, 2016

REVISED BY

IN_DEVELOPMENT
IEC 61466-1 ED3