T/HDGXH 031-2021 Rated voltage: 450V/750V and below, polyvinyl chloride butadiene nitrile composite insulation and sheath flat cable

Scope

Scope: This document specifies the terms and definitions, designations, models and specifications, usage characteristics, cable structure and technical requirements, finished cable and testing methods, inspection rules, packaging, transportation and storage of PVC/NBR composite insulated and sheathed flat cables with a rated voltage of U0/U450V/750V and below. This document applies to AC rated voltages of U0/U450V/750V and below for electrical appliances, power tools, and various mobile electrical equipment, etc., for connection and installation purposes. Main technical content: 5.1 The rated voltage of the cable is 450V/750V and below. 5.2 The long-term allowable operating temperature of the cable shall not exceed 70℃. 5.3 The bending radius of the cable shall not be less than 6 times the short axis of the cable. 5.4 The ambient temperature during cable laying shall not be lower than -10℃. 6. Cable structure and technical requirements 6.1 Conductor 6.1.1 Material: The conductor shall be annealed copper wire, and the single wires in the conductor may not be tin-plated or tin-coated. 6.1.2 Structure 6.1.2.1 The conductor shall adopt the type 5 soft round stranded conductor specified in GB/T 3956-2008. 6.1.2.2 The structure of the conductor shall comply with the provisions of Table 2. 6.1.3 Resistance: The DC resistance of the conductor at 20℃ shall comply with the provisions of Table 2. 6.2 Insulation 6.2.1 Material: The insulation material shall preferably be a tested and qualified PVC/NBR composite or PVC mixture. 6.2.2 Extruded insulation: The insulation shall be tightly extruded on the conductor, and the insulation and conductor shall not be damaged during stripping of the insulation. 6.2.3 Thickness 6.2.3.1 The nominal value of the insulation thickness shall comply with the provisions of Table 2. 6.2.3.2 The average value of the insulation thickness shall not be less than the nominal value, and the minimum thickness at the thinnest point shall not be less th

Development Information

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