Analysis of the performance of P.T.F.E. sleeved glass-fibre insulators (TM-ETR-067)

The use of PTFE/glass-fibre insulators on the BR 50 Hz electrified railway system has been described in. Following early failures of many insulators, a number of design changes were made, but in spite of these changes failures have continued. The failure level was considered excessive and butyl rubber-coated glass-fibre insulators...