Electrical power cable with stranded insulated wires

Details Electrical power cable with stranded insulated wires Electrical power cable with stranded insulated wires

H - Electricity

01

B

337/75

H01B 7/30 (2006.01) C08L 29/04 (2006.01) H01B 3/44 (2006.01) H01B 9/06 (2006.01)

Patent

CA 1105104

ELECTRICAL POWER CABLE WITH STRANDED INSULATED WIRES ABSTRACT OF THE DISCLOSURE: An electric power cable having a Milliken-type conductor comprising at least four sectors, the conductor being paper-insulated and oil filled and each sector comprising metal wires stranded together. Each wire is covered with a layer of a cross-linked synthetic resin having a thermal classification of 120°C, a CEI resistance to abrasion of at least 50 cycles, a CEI thermal pressure value higher than 170°C and an insulating oil contaminating effect of substantially zero, such resin also being sub- stantially completely volatizable by the heat used for joining cables by welding. Preferred resins are a polyvinyl-acetal resin, such as a polyvinyl-formal resin, cross-linked with a phenol resin and, optionally, a melamine resin and such with the addition of a blocked isocyanate.

298977

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