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US 12,640,285 B2Granted
Highly flame-retardant UTP cable
AssigneeLs Cable & System Ltd.
InventorsIn Ha Kim, Yu Min Kim
Life of this patent
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Abstract
A highly flame-retardant UTP cable may have a plurality of pair units formed by a plurality of conductive wires twisted together, wherein each conductive wire includes a conductor, an insulator surrounding the conductor, an outer jacket surrounding the plurality of pair units, and a separator including one or more partition walls disposed between the plurality of pair units, wherein any cross-section of the cable has a cross-sectional limited oxygen index, of 57% or more.
Claims10
A highly flame-retardant UTP cable comprising:
- a plurality of pair units formed by a plurality of conductive wires twisted together, each including a conductor and an insulator surrounding the conductor;
- an outer jacket surrounding the plurality of pair units;
- and
- a separator including one or more partition walls disposed between the plurality of pair units,
- wherein any cross-section of the cable has a cross-sectional limited oxygen index, as defined by Equation 1 below, of 57% or more,
- Cross-sectional limited oxygen index (%)=a/(a+b+c)×α+a/(a+b+c)×β+a/(a+b+c)×γ [Equation 1]
- In Equation 1 above,
- a is a cross-sectional area (mm′) of an insulator,
- b is a cross-sectional area (mm′) of a separator,
- c is a cross-sectional area (mm′) of an outer jacket,
- α is a limited oxygen index (LOI) of a material that forms the insulator,
- β is a limited oxygen index (LOI) of a material that forms the separator, and
- γ is a limited oxygen index (LOI) of a material that forms the outer jacket.
10 more elements
Dependencies are inferred from the claim text.