Rating an enhanced strength conductor
AssigneeSouthwire Company
InventorWilber F. Powers
Life of this patent
Estimating the term…
Abstract
A conductor may be rated. First, a conductor core comprising a first material and having a core elongation may be provided. Next, a plurality of conductor strands may be provided. The plurality of conductor strands may comprise a second material. The elongation of the plurality of conductor strands may be one of greater than the core elongation or equal to the core elongation. Then a rating for a conductor comprising the conductor core and the plurality of conductor strands may be provided. The rating may include a composite rated breaking strength of the conductor being a function of the core elongation and not being limited by the elongation of the plurality of conductor strands.
Claims16
A method comprising:
- manufacturing a conductor comprising a conductor core and a plurality of conductor strands, the conductor core comprising a plurality of core strands and a core elongation at an ultimate tensile strength of the conductor core, wherein manufacturing the conductor comprises;:
- providing the conductor core comprising a first material, and
- stranding the plurality of conductor strands around the conductor core, the plurality of conductor strands comprising a second material, wherein an elongation of the plurality of conductor strands is one of the following:
- greater than the core elongation and equal to the core elongation, the second material configured to cause the plurality of conductor strands not to break at the elongation of the plurality of conductor strands;
- and
- rating the manufactured conductor with a composite rated breaking strength equal to as calculated by an equation:
- the composite rated breaking strength=(ncon*STRcon*RFcon)+(ncore*STRcore*RFcore);
- wherein:
- ncon is a number of conductor strands in the plurality of conductor strands;
- ncore is a number of core strands in the plurality of core strands;
- STRcon is an average breaking strength of the conductor strands in the plurality of conductor strands at the core elongation;
- STRcore is an average breaking strength of the core strands in the plurality of core strands at the core elongation;
- RFcon is a rating factor of the plurality of conductor strands;
- and
- RFcore is a rating factor of the plurality of core strands.
A method comprising:
- manufacturing a conductor comprising a conductor core and a plurality of conductor strands, the conductor core comprising a plurality of core strands and a core elongation at an ultimate tensile strength of the conductor core, the conductor having a composite rated breaking strength equal to as calculated by an equation:
- the composite rated breaking strength=(ncon*STRcon*RFcon)+(ncore*STRcore*RFcore);
- wherein:
- ncon is a number of conductor strands in the plurality of conductor strands;
- ncore is a number of core strands in the plurality of core strands;
- STRcon is an average breaking strength of the conductor strands in the plurality of conductor strands at the core elongation;
- STRcore is an average breaking strength of the core strands in the plurality of core strands at the core elongation;
- RFcon is a rating factor of the plurality of conductor strands;
- and
- RFcore is a rating factor of the plurality of core strands,
- wherein manufacturing the conductor comprises:
- providing the conductor core comprising a first material, and
- stranding the plurality of conductor strands around the conductor core, the plurality of conductor strands comprising a second material, wherein an elongation of the plurality of conductor strands is one of the following:
- greater than the core elongation and equal to the core elongation, the second material configured to cause the plurality of conductor strands not to break at the elongation of the plurality of conductor strands.
Dependencies are inferred from the claim text.