IEC 61109 Ed. 2.0 b PDF

IEC 61109 Ed. 2.0 b – Insulators for overhead lines – Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V – Definitions, test methods and acceptance criteria

IEC 61109:2008 applies to composite suspension/tension insulators consisting of a load-bearing cylindrical insulating solid core consisting of fibres – usually glass – in a resin-based matrix, a housing (outside the insulating core) made of polymeric material and end fittings permanently attached to the insulating core. The main technical changes with respect to the previous edition are
– removal of tests procedures now given in IEC 62217;
– inclusion of clauses on tolerances, environmental conditions, transport, storage and installation;
– general improvement of the description of tests and addition of a new Annex C on non-standard loads.