H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/151
H01H 85/26 (2006.01) H01H 85/20 (2006.01) H01H 85/32 (2006.01) H01H 85/38 (2006.01) H01H 85/00 (2006.01)
Patent
CA 1093123
47,153 CORONA REDUCING APPARATUS FOR A SUBMERSIBLE ELECTRICAL FUSE ABSTRACT OF THE DISCLOSURE Semiconductive paint is applied to a narrow strip on the inside surface of an insulating enclosure for a sub- mersible fuse. The enclosure is generally watertight. The semiconducting paint marginally overlaps two isolated regions of electrically conducting paint. The combination of the conducting paint and semiconducting paint covers the entire inner surface of the enclosure and acts cooperatively to prevent or reduce corona therein, At the place of overlap, rounded ridges are provided for shielding the relatively sharp interface corner of the conductive paint on the inside surface of the electrically insulating material to reduce the corona at that relatively critical point. A flowable rubber gasket is provided for insertion between two separable portions of the enclosure. The gasket not only provides watertight sealing for the enclosure when com- pletely assembled but has a bead on the inside surface thereof which shields the corners of the two portions of the enclosure to reduce the corona effects thereat.
295944
Mcconnell And Fox
Westinghouse Electric Corporation
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