Scope
Study of high-voltage circuit-breaker, disconnector,
earthing switch, and Instrument transformer failures and defects in service in
the voltage range of 72,5 kV up to and including 800 kV.
The aim is to determine reliability data and trends, based
on a worldwide enquiry. The results of the enquiry will, for circuit-breakers and instrument transformers, be compared to the results of previous Cigré
studies. For circuit-breakers, only SF6 single pressure types are to be covered. For disconnectors and earthing switches, both open-air and
SF6 insulated types (GIS) are to be covered.
The enquiry will be coordinated with a similar enquiry to be
undertaken by WG B3.02 TF 02, Service experience with GIS.
All data submission is closed.