| abstract |
Blocked water medium-pressure power cable the invention discloses a kind of scandium-aluminum alloy conductor, the core of cable is made up of three power wire cores；Power wire core sets gradually power wire core conductor shield, power wire core insulating barrier and power wire core metal screen layer outside power wire core conductor；Waterstop lapping layer, aluminum plastic belt are set gradually outside three power wire cores and indulges covering, galvanized steel strip armor and polyvinyl chloride oversheath；The packing that blocks water is filled between three power wire cores and waterstop lapping layer.Power wire core conductor of the present invention uses scandium-aluminum alloy conductor, on the one hand the fine aluminium of solving over is used as electric wire and cable conductor in the presence of many not enough, have the advantages that creep resistant, high flexible, strong extension, low bounce-back, stable connection, block-water performance are good, on the other hand also reduce the cost 50% of cable. |