High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1995-06-07
1997-12-16
Gellner, Michael L.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
H01H 3366
Patent
active
056988311
ABSTRACT:
An integrated electrical system includes a first conductor for receiving current from power lines or other equipment. The conductor is coupled to a conventional vacuum switch for controlling flow of current through the system. A current collector coupled to the vacuum switch collects current from the vacuum switch. A second conductor coupled to the current collector delivers current to equipment or lines externally of the device. The components of the system are housed within an inner epoxy encapsulated within Polysil. The epoxy preferably has temperature characteristics which are similar to that of Polysil to prevent cracking due to temperature stress. At least one sensor may also be provided integrally with the components for detecting faults or for sensing general power line conditions. A preferred voltage sensor has resistive shielding for accurate sensing in adverse environments.
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A. B. Chance Co., Centralia, Missouri brochure entitled "Single-Phase Encapsulated Loadbreak Vacuum Switch", Jan. 1970.
Popeck, article entitled "The Development of an Encapsulated Loadbreak Vacuum Switch for Underground Distribution Sectionalizing", undated, A.B. Chance pp. 3-5.
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Electrical Power Research Institute report entitled "Development of Polysil Material for Electrical Applications", prepared by Lindsey Industries, Inc., May 1979.
Abdelgawad Abdelgawad
Choi Mun Seog
Lindsey Keith E.
Scholfield Steven D.
Friedhofer Michael A.
Gellner Michael L.
Lindsey Manufacturing Company
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