Electricity: conductors and insulators – Insulators – Combined
Patent
1986-07-16
1987-06-02
Askim, Laramie E.
Electricity: conductors and insulators
Insulators
Combined
174 73R, 174152R, 174DIG10, H01B 1726, H01B 1742, H01B 1750
Patent
active
046706259
ABSTRACT:
A bushing arrangement for conveying an electrical conductor through the casing of high voltage electrical apparatus exposed to the weather comprises a rigid member of synthetic resin cast around, so as to be bonded in a gas tight manner to, the conductor, and incorporating an exterior portion protruding outside the casing, the member being enclosed, over at least the major part of its exterior portion, by a plurality of insulting axially-overlapping weather-resistant collars and a stress cone each having a creepage flange or shed, the member being secured to the casing by a flanged collar. The insulating member may be made of a relatively cheap non-weather-resistant epoxy resin and the collars of EPDM rubber.
REFERENCES:
patent: 2459612 (1949-01-01), Baker
patent: 3515799 (1970-06-01), Ristuccia et al.
patent: 3531580 (1970-09-01), Foster
patent: 3604830 (1971-09-01), Frakes
patent: 3898372 (1975-08-01), Kalb
patent: 4312123 (1982-01-01), Wheeler
General Electric Co. brochure, "Termi-Matic Cable Termination Systems", published by General Electric Insulating Materials Department, Schenectady, N.Y., Oct. 1969, 8 pages total.
Davenport John L.
Wood Henry S.
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