Sf6 immersed circuit interrupter with electromagnetic arc rotating means

Abstract From the Canadian patent

A single pressure sulfur hexafluoride circuit interrupter is contained in a bottle having arcing and main contacts and conductive rings fixed relative to one another and which, serve as arc runners. Each of the rings is connected in series with a respective coil which is wound on the axis of its respective ring and which encircles the cooperating contact and conductors therefor. A small, low capacity puffer cylinder is connected to one of the moving contacts in order to produce at least a limited amount of gas motion through the arc space between the open contacts and the fixed rings which the contacts separate. The arcing contacts are arranged to have a blow-off path directed to cause an …