Visible break switch
First Claim
1. A circuit interrupting device comprising:
- a pressurized hermetically sealed housing, pressurized with a dielectric;
at least one pair of interrupting contacts disposed within said housing electrically coupled to terminals mounted on the exterior of said housing for connection to an electric circuit; and
means for viewing the interrupting contacts from outside the housing;
wherein said pair of interrupting contacts comprise portions of a puffer interrupter assembly having a transparent puffer tube, within which said pair of interrupting contacts are disposed.
5 Assignments
0 Petitions
Accused Products
Abstract
An SF6 puffer interrupter switch includes one or more viewing windows located on the housing. The viewing windows are strategically located on a sidewall of the housing to allow all of the puffer interrupter assemblies within the housing to be viewed from one viewing window. The puffer interrupter assemblies that house the interrupting contacts are provided with clear puffer tubes to allow the operator to verify the position of the interrupting contacts within the puffer tubes from the viewing window located on the housing. The SF6 interrupter switch housing is pressurized. By assembling the viewing window assemblies from the inside of the housing, the positive pressure within the housing assists in sealing the viewing window assemblies to minimize the leakage of the SF6 gas. Additional viewing windows may be used to allow light inside the housing.
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Citations
37 Claims
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1. A circuit interrupting device comprising:
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a pressurized hermetically sealed housing, pressurized with a dielectric; at least one pair of interrupting contacts disposed within said housing electrically coupled to terminals mounted on the exterior of said housing for connection to an electric circuit; and means for viewing the interrupting contacts from outside the housing; wherein said pair of interrupting contacts comprise portions of a puffer interrupter assembly having a transparent puffer tube, within which said pair of interrupting contacts are disposed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A polyphase puffer interrupter switch comprising:
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a hermetically sealed housing including a plurality of sidewalls, said housing being pressurized with a dielectric; and a plurality of puffer interrupter assemblies, each including a pair of interrupting contacts disposed within a transparent puffer tube. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A viewing assembly for use with a gas filled, pressurized and hermetically sealed switch housing comprising:
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a mounting ring adapted to be welded around an aperture provided on the housing, wherein said mounting ring is formed with an inwardly facing annular groove; a first gasket which is received in said annular groove; a viewing window having one side sealed against said first gasket; a second gasket that seats against the other side of said viewing window; a slip ring that seats against said second gasket; and a window ring clamp that seats against the slip ring and fastens the entire assembly together. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A puffer interrupter switch comprising:
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a hermetically sealed housing filled with dielectric gas under pressure; a plurality of pairs of feedthrough bushings hermetically sealed to said housing, each of said bushings having an electrical terminal extending externally of said housing for connection to an external electric circuit and an electrical terminal disposed within said housing; a plurality of puffer interrupter assemblies disposed within said housing and aligned along a linear axis, each of said assemblies having a pair of interrupting contacts disposed within a transparent tube, said interrupting contacts being electrically coupled to said electrical terminals disposed within said housing; means for moving said interrupting contacts into and out of contact; and means for viewing at least one of said interrupting contacts from outside said housing. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A puffer interrupter switch comprising:
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a hermetically sealed rigid, metal housing, said housing being pressurized with a dielectric; and a puffer interrupter assembly within said housing, said assembly including a pair of interrupting contacts disposed within a transparent puffer tube. - View Dependent Claims (35)
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36. A method of determining the position of a pair of interrupting contacts disposed within a pressurized metal housing of a switch from outside of said housing comprising the steps of:
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hermetically sealing said housing; pressurizing said housing with a dielectric gas; and providing at least one puffer interrupting assembly within the housing including a pair of interrupting contacts disposed within a transparent tube. - View Dependent Claims (37)
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Specification