CAN/CSA-C411.4-98 (R2008)

1. Scope and Objectives 1.1 Scope This Standard applies to suspension and dead-end composite insulators used on ac overhead transmission lines with a nominal voltage 69 kV or greater and a frequency not greater than 100 Hz. 1.2 Ojectives The objectives of this Standard are to (a) define the terms used; (b) define insulator characteristics (mechanical, electrical, and dimensional) and prescribe the conditions under which the specified values of these characteristics shall be verified; (c) specify test methods; and (d) specify acceptance criteria.