Patent ID: 8354607
Filing Date: 2013-01-15
Classification: H01H

Abstract:
1. A vacuum switchgear comprising; a plurality of main circuit switches each being disposed in a respective non-earthed vacuum chamber isolated from each other and having a respective movable electrode and fixed electrode, wherein each of the movable electrodes of the main circuit switches is connected to an air-insulated rod, which is connectable to an operating rod, wherein each of the fixed electrodes of the main circuit switches is connected to a bushing conductor extending from its respective non-earthed vacuum chamber, an earthed insulating mold casing that encloses the non-earthed vacuum chambers, air-insulated rods and bushing conductors, wherein the non-earthed vacuum chambers are enclosed in the earthed insulating mold casing, and each of the movable electrodes of the main circuit switches extended from the non-earthed vacuum chambers is electrically connected to each other in an air-filled portion of the earthed insulating mold casing, a plurality of earthing switches having respective fixed electrodes and movable electrodes, each fixed electrode being electrically connected to a corresponding fixed electrode of the main circuit switches, and a lid that air-tightly closes the air-filled portion of the earthed insulating mold casing, wherein the air-insulated rods are disposed in the air-filled portion of the earthed insulating mold casing.