The Electric Strength of Sulfur Hexafluoride at Radio Frequencies

The electric strength of SFs in uniform fields has been measured at 60 cps and in the radio frequency range 2-16 megacycles per second at gauge pressures of 5, 10, 15, and 20 lb/in. ~ The electric strength of SF6 was found to be essentially the same at 16 mega-cycles per second as at 60 cps. At 16 megacycles per second, the electric strength ex-ceeded that of polystyrene or polyethylene even at low pressures. The voltage required to break down a given configuration depends upon electrode material and irradiation