Investigation of the flashover of a FRP hot stick while in use for live line work at 500 kV

In October 1997 Manitoba Hydro experienced (31c flashover of a FRP hot stick during live line work at 500 kV ac. The paper describes the live line work which was being done, the weather and the condition of the hot stick. A series of tests were made to investigate factors which may have contributed to the flashover. The adequacy of available tests for FRP hot sticks is discussed. The corrective measures which have been taken prior to resuming work of this type are described.