Maintenance for HV cables and accessories

This Technical Brochure is based on the report prepared by CIGRE WG B1.04. The attention will be focused on the present utility practices regarding maintenance, the failure modes for the usual cable systems and the related diagnostic methods, and recommendations to utilities for effective and efficient maintenance. One of the main recommendations is that maintenance should be based on a clear strategy and elaborated in a clear maintenance plan. Finally the TB indicates that maintenance trends are moving to so called predictive maintenance.