High voltage or medium voltage switch device composed of vacuum and gas circuit breaker

Abstract

A hybrid high-voltage or medium-voltage breaker device comprises: an enclosure filled with a dielectric gas, a vacuum switch comprising a fixed first arc contact and a second arc contact which can move in translation in the axial direction of the enclosure, a force being exerted on the second contact when the vacuum switch allows current to flow, a gas switch comprising a fixed or quasi-fixed third arc contact and a fourth arc contact which can move in translation, and an operating rod connected to the fourth contact. The device further comprises: a connection arrangement for electrically connecting the second and third contacts, and which are moved in translation conjointly with the second contact, and a displacement arrangement connected to the connection arrangement and to the rod to move them to separate the second and fourth contacts from the first and third contacts, respectively, comprising a dead travel connecting arrangement for moving the rod over a particular dead travel at the same time as operating on the connection arrangement to hold the vacuum switch closed during that movement, and which thereafter acquire a movement in translation which is independent of the movement acquired simultaneously by the connection arrangement.

Description

technical field [0001] The invention relates to a hybrid high or medium voltage switchgear. The qualifier "hybrid" refers to a hybrid breaking action in which two different breaking techniques cooperate with each other. In particular, if the switchgear comprises a vacuum switch which closes the first pair of arcing contacts, and also comprises a gas switch comprising the second pair of arcing contacts, the switchgear can be regarded as a hybrid switchgear. Background technique [0002] US Patent 3,038,980 discloses a device of the above type. It consists of a casing filled with insulating gas and having a longitudinal axis; two switches are placed inside the casing and electrically connected in series; the operating mechanism of the device is arranged outside the casing. The operating mechanism for manipulating the above two switch contacts is relatively simple, and one of the two contacts of the gas switch is connected to an adjacent moving contact of the vacuum switch. ...

AI Technical Summary

Problems solved by technology

[0007] It is obvious that it is impossible for the above device to obtain simultaneous or slightly delayed separation of the contacts of the vacuum switch relative to the separation of the contacts of the gas switch

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