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2013-01-16
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Bare wire and bare conductor products: refers to products with only conductors and no insulation layer, including copper, aluminum and other metal boxes composite metal round single wire, various structures of overhead transmission lines with stranded wire, flexible wiring, wire and profiles.
In the form of windings in the magnetic field cutting magnetic lines induced current, or through the current generated magnetic field used by the wire called winding wire, including enameled wire with various characteristics, fiber wound wire, inorganic insulated wire, etc.
From the power distribution point of the power system, the electric energy is directly transmitted to the power connection lines of various electrical equipment and appliances, and the electrical installation lines and control signals in various industrial and agricultural equipment belong to this category of products. Such products are the most widely used, the most varieties, and most of them must be combined with the characteristics of the equipment used and the use of environmental conditions to determine the structure and performance of the product. Therefore, in addition to a large number of general-purpose products, there are many special box special products. Such products include general-purpose insulated wires, installation wires, general-purpose mobile rubber-sheathed flexible cables, control box signal wires and cables, special wires for aircraft, automobiles and tractors.
2013-01-21
1) Rated voltage 10kV, 35kV. 2) The cable laying temperature shall not be lower than -20 ℃. 3) The maximum temperature of the cable during short circuit (the longest duration shall not exceed 5s): XLPE insulation 250 ℃; High density polyethylene insulation 150 ℃;4) The maximum long-term allowable working temperature of cable conductor: A The maximum long-term allowable working temperature of cable with load-bearing structure is determined by the maximum long-term allowable working temperature of insulation: XLPE insulation 90 ℃; High density polyethylene grade 75 ℃; B No bearing line structure cable (under consideration) 5) Allowable bending radius of the cable The allowable bending radius of the cable shall not be less than the cylinder used in the cable bending test