Table of Contents

FOREWORD<br>PREFACE<br>1 Scope and object<br>2 Normative references<br>3 Mechanical and dimensional characteristics<br>4 Designation and marking<br>5 Tolerances

Abstract

Applies to string insulator units of the cap and pin type with insulating parts of ceramic material or glass, intended for a.c. overhead lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz and to insulators of similar design used in substations. Specifies values of mechanical and dimensional characteristics for string insulator units of the cap and pin type: 1. with ball and socket couplings designations U 40 BS to U 530 BL 2. with clevis and tongue couplings designations U 60 C to U 210 CL. Note - For use in heavily polluted areas and for insulators for use on direct current systems, see Publication 438.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	SC 36B