Electricity: conductors and insulators – Boxes and housings
Reexamination Certificate
1999-09-07
2001-07-24
Dinkins, Anthony (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
C174S017070, C361S603000
Reexamination Certificate
active
06265656
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is based on a dielectric material housing for an assembly which is at high voltage, preferably a power-electronics assembly, having two electrical connections which can be routed out of the housing. Housings of the abovementioned type are frequently used in the high and medium-voltage area in power engineering in order to hold and to enclose electrically active parts which are at high potential.
2. Discussion of Background
A dielectric material housing of the type mentioned above is described, for example, in Brown Boveri Report 11-77, page 634. This housing has an essentially tubular shape, and encloses a contact arrangement of a power breaker. Two electrical connections which have a DC connection to the contact arrangement are passed through the casing surface and one end surface of the housing. The housing is arranged, protected against direct contact, in a metal cabinet which can be locked.
SUMMARY OF THE INVENTION
Accordingly, one object of the invention as it is specified in the patent claims is to provide a novel dielectric material housing for an assembly which is at high voltage, which housing is distinguished by a small space requirement and can at the same time be installed in a space-saving manner in a predetermined small volume in an installation containing the assembly.
The dielectric material housing according to the invention is distinguished by the fact that the majority of its surface is designed to be protected against direct contact, and that it can thus be inserted into a very small volume, supported on this part of the surface, with its walls being at frame or ground potential. Electrical connections which are routed out of the housing at the side can now be connected in a very space-saving manner to the electrical connections of assemblies which are each arranged in identical dielectric material housings and/or are connected to a high-voltage or grounding conductor, which is routed into the interior of the small volume, of an installation containing the assemblies.
A very compact and dielectrically particularly advantageous dielectric material housing is obtained if, in addition to the housing geometry being of optimum design, materials are at the same time used which are designed to be dielectrically suitable, and if critical areas, such as the junction between the housing surface which is at frame or ground potential and the dielectrically highly loaded side surfaces, are dielectrically relieved of the load by means of suitably designed and arranged field control means.
REFERENCES:
patent: 3599134 (1971-08-01), Galloway
patent: 3611225 (1971-10-01), Dakin
patent: 3670276 (1972-06-01), Theodore
patent: 3801727 (1974-04-01), Wilkinson et al.
patent: 3912985 (1975-10-01), Sawchuk
patent: 3934332 (1976-01-01), Trunzo
patent: 4190732 (1980-02-01), Galloway et al.
patent: 5612424 (1997-03-01), Sato et al.
patent: 2740371 (1978-03-01), None
patent: 89 09 674 U (1989-11-01), None
patent: 4315772A1 (1994-11-01), None
patent: 4318367A1 (1994-12-01), None
patent: 4436592C2 (1996-04-01), None
patent: 296 08 312 U1 (1996-08-01), None
“Eine neue Einheitsreihe von Mittelspannungs-Schaltfeldern fur olarme und SF6-Schaltgerate”, Munzinger, et al., Brown Boveri Mitt., Nov. 1977, p. 634-635.
Burns Doane Swecker & Mathis L.L.P.
Daimler-Chrysler AG
Dinkins Anthony
Estrada Angel R.
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