Electricity: conductors and insulators – With fluids or vacuum – Conduits – cables and conductors
Patent
1984-06-18
1985-08-20
Grimley, A. T.
Electricity: conductors and insulators
With fluids or vacuum
Conduits, cables and conductors
174 15C, 174 25R, H01B 906
Patent
active
045366101
ABSTRACT:
An oil-filled, multi-core, electric cable having three cores within a metal sheath. Each core has a conductor surrounded by insulation and has substantially the same outer dimensions as the other cores. One conductor is made of copper and has a central oil duct. The other conductors are made of stranded aluminum wires in side-by-side and contacting relation and the ratio of the cross-sectional area of the metal of the copper conductor to the cross-sectional area of the metal of each aluminum conductor is the reciprocal of the ratio of the electrical conductivities thereof.
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patent: 3775549 (1973-11-01), Matsuda et al.
patent: 3780206 (1973-12-01), Reynolds
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Grimley A. T.
Nimmo Morris H.
Societa Cavi Pirelli S.p.A.
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