Electricity: conductors and insulators – Conduits – cables or conductors – Conductor structure
Patent
1981-05-15
1984-07-31
Truhe, J. V.
Electricity: conductors and insulators
Conduits, cables or conductors
Conductor structure
57219, 57221, 148 627, 148 63, 174130, 204 40, 585 15, H01B 508
Patent
active
044632193
ABSTRACT:
The invention relates to a compound cable, such as an aluminum cable, an aluminum alloy cable, aluminum cable steel reinforced or an aluminum alloy cable steel reinforced with reduced audible noise for use in a high voltage transmission line.
The surface of each of the aluminum wires to constitute the outermost layer of the cable is treated in water or aqueous vapor of more than 90.degree. C. so as to form a hydrophilic hydrated film on said surface, or more than 3 grooves are provided on the outer periphery of each of the aluminum wires in excess of 30% of such wires to constitute the outermost layer of the cable, a hydrated film being caused to form on the surface including the grooves thereof, so that the raindrops adhering to the surface may readily disappear due to the improved hydrophilic property and draining property of the surface of the cable thereby preventing the development of the corona discharge.
REFERENCES:
patent: 3039898 (1962-06-01), Keller
patent: 3247026 (1966-04-01), Switzer
patent: 3676578 (1972-07-01), Cahill
patent: 3734782 (1973-05-01), Laroche
patent: 3806626 (1974-04-01), Liao
patent: 3813481 (1974-05-01), Adams
patent: 3930113 (1975-12-01), Johansen et al.
patent: 4292095 (1981-09-01), Schlinsog
Comber, M. G. and Zaffanella, L. E.; Audible-Noise Reduction by Bundle Geometry Optimization, Paper T73162-5, IEEE Power Engineering Society, Presentation at IEEE PES Winter Meeting, New York, N.Y., Jan. 28-Feb. 2, 1973, Manuscript submitted 9/15/72.
Anaconda Bare and Weatherproof Aluminum Wire and Cable, Catalogue No. C-78, published by Anaconda Wire and Cable Co., 1949, p. 4.
Nimmo Morris H.
Sumitomo Electric Industries Ltd.
Truhe J. V.
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