Exterior connected arc runner for arc spinner interrupter
US4255631A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jan 11, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit interrupter is described in which the arc current to be interrupted is rotated in a relatively static sulfur hexafluoride gas. The arc is rotated by a Lorentz force produced by the interaction of a magnetic field which has at least one component extending perpendicularly to the arc and the arc current. The magnetic field is the resultant field produced by the field of a coil which is in series with the arc current and the field of a circulating current which is induced in an arc runner disposed perpendicularly to the current path. The arc runner acts as a stationary arcing contact and has a general washer type shape, and the arc root circulates around one surface of the arc runner. The current path for bringing current from the coil, which is concentric with the arc runner, is connected to the outer diameter of the arc runner, so that the current must execute an inward bend, relative to the axis of the runner, before reaching the runner and then must execute a bend in the direction of the arc current. This then produces a magnetic force which is directed toward the axis of rotation of the arc current and of the interrupter. The arc current is then at a greater angle to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.