High voltage interrupting switch with improved con

专利名称：High voltage interrupting switch with

improved contact connection arrangementand method

发明人：Roy T. Swanson申请号：US06/810792申请日：19851219公开号：US04691085A公开日：19870901

摘要：An improved high-voltage interrupting switch or interrupter and method ofassembly and operation thereof is provided. The switch is of the type including a pair ofcontacts which are normally electrically interconnected and which are rapidly driven apartand separated to form a gap therebetween, thereby opening the switch. In preferredarrangements, one contact is stationary while a second contact is movable, although bothmay be movable. One of the contacts, preferably the stationary contact, contains a boreinto which a portion of the second contact is telescoped. The second contact is arrangedto receive a member to expand portions of the second contact to provide reliable, directelectrical interconnection of the stationary and movable contacts. In a specific

arrangement wherein the stationary contact includes a conductive tube and the movablecontact is partially telescoped into the bore of the stationary contact, the movablecontact includes a bore for receiving a member. The member includes a tapered portionthat, upon insertion into the bore of the movable contact, provides a radially-expansiveforce to a portion of the movable contact. The radially-expansive force expands themovable contact into desired, secure engagement against the interior of the stationary-

contact conductive tube to provide electrical interconnection between the movable andstationary contacts. A piston disposed in the bore of the stationary contact is driven outof the bore of the stationary contact and moves the movable contact away from thestationary contact so as to separate the contacts and thereby open the switch. In apreferred arrangement, the member extends beyond the movable contact and istapered such that the movement of the piston releases the member within the movablecontact; thereafter, the member and the movable contact moving together in responseto the piston. In a specific arrangement, the switch includes a second stationary-contactconductive tube that is aligned with the first stationary contact and the movable contact.The end of the movable contact opposite the first stationary contact is partiallytelescoped into the second stationary contact. The member extends throughout thelength of the movable contact and includes a tapered portion adjacent the secondstationary contact. Upon insertion of the member into the movable contact, the taperedportions are arranged to provide a radially-expansive force to a respective portion of themovable contact. The radially-expansive force expands portions of the movable contactinto engagement with portions of the stationary-contact conductive tubes.

申请人：S&C ELECTRIC COMPANY

代理人：James V. Lapacek

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