Patent
Five-core power cable
Shelin Wang
- 17 Mar 1993
2
TL;DR: In this paper, a power cable for low voltage power network transmission and distribution lines, composed of five conductors, a polyvinyl chloride insulating layer, an outer protecting layer and polypropylene tearing rope fillers, is presented.
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Abstract: The utility model discloses a power cable for low voltage power network transmission and distribution lines, composed of five conductors, a polyvinyl chloride insulating layer, a polyvinyl chloride outer protecting layer and polypropylene tearing rope fillers. Three of five conductors are used as three-phase power conductors, one conductor is used as a neutral conductor (N wire), and the other conductor is used as a protective conductor (PE wire). The utility model is characterized in that the conductor (PE wire) adopts a circular sectional plane and is positioned in the center of the power cable, and the three power conductors and the neutral conductor (N wire) adopt fan-shaped sectional planes with identical shapes and sizes and are uniformly distributed on the circumference of the conductor (PE wire) with the circular sectional plane; the central angles of the fan-shaped sectional planes are 90 DEG, and the radius (r) of the circular sectional plane is 3/10-1/2 of the radius (R) of the fan-shaped outer circle, namely r=(3/10-1/2) R.
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Citations
Patent
Multi-core cable
He Chenglong,She Chen,Yang Zhenfen,He Yuan +3 more
- 16 Jul 2014
TL;DR: In this paper, the authors proposed a multi-core cable consisting of a central conductor and a plurality of conductors, where an insulating layer with a fan-shaped section is wrapped outside each conductor, and a gap is also reserved between the insulating layers outside every two adjacent conductors.
13
Patent
Cable with ground wire core
Ma Zhuang,Liu Jun,Shen Yidong,Wang Qin,Chu Yaqing +4 more
- 11 Mar 2015
TL;DR: The cable with the ground wire core has the advantages that the power wire cores of a corrugated structure are compact in structure, clearances between the wire cores are small, flame retardant or refractory materials such as glass cords, glass tapes, mica tapes and asbestos cord s are not used, production cost is lower, and flame retardance and fire resistance are reliable as mentioned in this paper.