Patent ID: 6459568
Filing Date: 2002-10-01
Classification: H02B

Abstract:
A hybrid type gas insulation switch gear apparatus, comprising:a main enclosure including a first cylindrical section having a base and a second cylindrical section branched from the base of the first cylindrical section and obliquely extending from the first cylindrical section, the first and second cylindrical sections having first and second opening sections; an insulating bushing mounted to the first opening section and including a hollow insulating housing and a conductor extended in the hollow insulating housing; an insulating enclosure mounted to the second opening section and communicated with the second cylindrical section, an insulating gas being sealed in the main enclosure, the insulating bushing and the insulating enclosure; a first fixed electrode electrically connected to the conductor and a first movable electrode which are received in the first cylindrical section to form a disconnecting switch; an insulating member configured to support the first fixed electrode on the first cylindrical section; a connecting conductor electrically connected to the first movable electrode of the disconnecting switch, arranged in the first cylindrical section, and including a branched conductor extending in the second cylinder; a main electrode provided in the insulating enclosure; a second movable electrode provided in the insulating enclosure and configured to be moved to the main electrode and electrically connected to the main electrode and the branched conductor to form a circuit breaker connected to the disconnecting switch in series; a current transformer arranged around the second cylindrical section to detect a current flowing through the connecting conductor; and a first earth switch mounted to the first cylindrical section and including a movable counter electrode configured to connect and disconnect the fixed electrode of the disconnecting switch to the ground.