Title :
The performance of composite insulators in a coastal environment
Author_Institution :
Nat. Grid Technol. & Sci. Labs., Leatherhead
Abstract :
A composite insulator consists of polymeric weathersheds encasing a resin-bonded glass-fibre core (RBGF), to which are fixed metal end-fittings that transfer the mechanical load. Despite these common features, the design details and choice of materials employed by different manufacturers has resulted in uncertainty in the electrical and mechanical performance of such insulators under polluted conditions. Here, the author describes natural and artificial pollution tests performed on composite insulators by NGC and the current position regarding their potential for use on overhead transmission lines in the UK
Keywords :
composite insulating materials; electric breakdown of solids; glass fibre reinforced composites; insulation testing; insulators; organic insulating materials; polymers; power overhead lines; UK; coastal environment; composite insulators; design; electric breakdown; electrical performance; insulation testing; mechanical load; mechanical performance; overhead transmission lines; performance; pollution tests; polymeric weathersheds; resin-bonded glass-fibre core;
Conference_Titel :
Non-Ceramic Insulators for Overhead Lines, IEE Colloquium on
Conference_Location :
London
