Drew McGuire is transmission and substations research and development director of the Electric Power Research Institute. Drew leads research teams focused on Distribution Assets and T&D Environmental ...

For the purpose of the present article, we will limit our quest to those most popular: Oil, Compressed air, SF6 and Vacuum. In oil circuit breakers, the arc is drawn in oil inside a special ...

Since its introduction in the 1950s, sulfur hexafluoride (SF 6) has been the gas of choice for circuit-breakers and gas-insulated switchgear (GIS) in high-voltage substations. SF 6 possesses unique ...