Hybrid circuit breaker
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsTadashi Hashimoto, Ken Morita
Life of this patent
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Abstract
There is disclosed a vacuum circuit breaker unit wherein a fixed contact and a movable contact which can be brought into contact with or separated from each other are accommodated in a vacuum valve, as well as a gas circuit breaker unit, in which a fixed contact and movable contact are provided in a sealed container containing insulating gas. The vacuum circuit breaker unit and the gas circuit breaker unit are connected in series and accommodated in an earthed tank with a vacuum valve being surrounded by a decomposition gas-proof sealed container.
Claims4
A hybrid circuit breaker device for breaking high voltage DC current comprising:
- vacuum circuit breaking means for electrical connection to said high voltage DC current having;
- an outer decomposition proof sealed gas container;
- a vacuum container contained within said decomposition proof gas container,
- a fixed contact means contained within said vacuum container,
- a movable contact means contained within said vacuum container adapted so that said movable contact means and said fixed contact means can be brought into and separated from said fixed contact means, for interrupting said DC current;
- gas circuit breaking means electrically connected in series with said vacuum circuit breaking means having a fixed contact means and a movable contact means adapted so that said movable contact means and said fixed contact means can be brought into and separated from said fixed contact means, for interrupting and isolating said DC current;
- drive unit means that brings into and separates the respective movable and fixed contact means of said vacuum circuit breaking means and said gas circuit breaking means;
- a sealed grounded tank containing insulating gas, said vacuum circuit breaking means and said gas circuit breaking means;
- and
- supporting means supporting said vacuum circuit breaking means and said gas circuit breaking means within said sealed grounded tank.
Dependencies are inferred from the claim text.