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QC/T 1037-2016: High voltage cables for road vehicles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsQC/T 1037-2016: High voltage cables for road vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT1037-2016QC AUTOMOBILE STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.10 T 36 High voltage cables for road vehicles Issued on. APRIL 05, 2016 Implemented on. SEPTEMBER 01, 2016 Issued by. Ministry of Industry and Information Technology of the People's Republic of China Table of ContentsAnnouncement... 3 Foreword... 8 1 Scope... 9 2 Normative references... 9 3 Terms and definitions... 9 4 Requirements... 9 5 Test methods... 15 6 Inspection rules... 21 7 Packaging and packaging mark... 23 Annex A (normative) Structural dimensions of cable... 25 Annex B (informative) Models of major cables... 31ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009 “Directives for standardization - Part 1.Structure and drafting of standards”. This Standard does not involve patents. Annex A of this Standard is normative. Annex B is informative. This Standard was proposed by and shall be under the jurisdiction of National Technical Committee on Automobiles of Standardization Administration of China (SAC/TC 114). Main drafting organizations of this Standard. Beijing Fox Automotive Wire Co., Ltd., Changsha Automobile Electric Apparatus Research Institute, Changchun Bulb Wire Co., Ltd. Main drafters of this Standard. Huo Yan, Wang Yadong, Hu Mengwen, Li Weiyang, Zhang Jie, Wang Sengshan, Li Guoyu. High voltage cables for road vehicles1 ScopeThis Standard specifies the requirements, test methods, inspection rules, packaging and packaging marks of high voltage cables for road vehicles. This Standard is applicable to high voltage cables for road vehicles of which the rated voltages are AC 1000V/DC 1500V and AC 600V/DC 900V.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1690, Rubber vulcanized or thermoplastic - Determination of the effect of liquids GB/T 3953, Round copper wire for electrical purposes GB/T 4910, Tinned round copper wire GB/T 25085-2010, Road vehicles - 60 V and 600 V single-core cables GB/T 25087-2010, Road vehicles - Round, screened and unscreened 60 V and 600 V multi-core sheathed cables QC/T 414-2016, Color of low-voltage wire for automobile3 Terms and definitionsFor the purposes of this document, the terms and definitions defined in GB/T 25085 and GB/T 25087 apply.4 Requirements4.1 Model Cable model is compiled according to QC/T 414-2016.See Annex B for major cable models. 4.3 Structure dimensions Cable specifications and corresponding structural dimensions are given in Annex A. 4.4 Conductor 4.4.1 The conductor is twisted with bare soft round copper wire or tinned soft round copper wire as specified in Table 1. 4.5.1 The insulation layer shall be tightly coated on the conductor and easily peeled off from the conductor without damaging the conductor. 4.5.2 Agreed by both supply-demand parties, it is allowed to add spacers between the insulation layer and the conductor. 4.5.3 The insulation layer shall be inspected for defects. Breakdown discharge shall not occur during the spark test of the following voltage (effective value). - 8kV for AC 600V/DC 900V cable; - 10kV for AC 1000V/DC 1500V cable. 4.5.4 The insulation volume resistivity of the insulation layer shall not be less than 109 Ω • mm. 4.6 Stranded cable (for multi-core cable) 4.7 Shielding layer (for shielded cables) 4.7.1 The shielding layer is woven with bare copper wire or tinned copper wire as shown in Table 1.The weaving density shall be no less than 85%. 4.8 Sheathed layer (for sheathed cable) 4.8.1 The sheathed layer shall be in close contact with the core and easily peeled off from the core without damaging the insulation and shielding. 4.8.2 Allow the addition of spacers between the sheathed layer and the shield. 4.9 Surface mark 4.9.1 Cable surface shall not have obvious cracks, bubbles, impurities and bumps that exceed tolerances. 4.10 Finished cable 4.10.1 Ellipticity. Cable ellipticity shall be no more than 8%. 4.10.4 Sheathed layer water immersion withstand voltage. The sheathed layer is immersed in water 50Hz AC withstand voltage (RMS) test. The sheath of the cable shall be able to withstand 1kV for 30min, rise the voltage to 5kV, and keep it for 5min without breakdown. 4.10.7 Peeling force / adhesion. The peeling force / adhesion of the insulation / sheath of the finished cable is determined by both supply-demand parties. 4.10.8 Cyclic bending. The cable shall meet the requirements of 7.3.5 of GB/T 25087 after cyclic bending test. 4.10.11 Wear resistance. The outer layer of the cable shall be capable of withstanding the number of scratches specified in Table 4. 4.10.15 Heat shrinkage. After the finished cable has passed the heat shrinkage test. - The shrinkage of each end of the insulation shall be no more than 2mm; - The shrinkage of each end of the sheath shall be no more than 4mm. 4.10.16 Chemical resistance reagent. The cable is tested by chemical resistance reagent, and the insulation/sheath shall not be exposed/shielded after winding. Carry out the withstand voltage test without breakdown. The type of medium for chemical resistance reagent is determined by both supply-demand parties. 4.10.17 Mark durability. After the cable has been tested for durability, it shall comply with the requirements of 11.3.4 of GB/T 25085.5 Test methods5.1 General Except for the exit-factory test, all test samples shall be stored at (23 ± 5)°C for at least 16h. 5.3 Inspection of shielding weaving density Weaving density is calculated by formula (1). 5.5 Conductor DC resistance test Conduct the test according to 6.1 in GB/T 25085. 5.6 Insulation layer defect inspection Inspect according to 6.3 in GB/T 25085. 5.7 Sheathed layer defect inspection Inspect according to 6.3 in GB/T 25085.Make sure that the shield of the cable is grounded in an appropriate manner for the high-pressure spark test device to function properly. 5.11 Insulation volume resistivity test of insulation layer Conduct the test according to 6.4 in GB/T 25085.For shielded cables, the sheath and shield shall be cleanly removed without damaging the insulation. 5.12 Insulation volume resistivity test of sheathed layer Conduct the test according to 6.4 in GB/T 25085.When measuring, the shield is connected to the power supply, positive. 5.13 Shielding efficiency test Conduct the test according to 6.3 in GB/T 25087. 5.14 High temperature pressure test Conduct the test according to 7.1 in GB/T 25085 for single core unshielded cable. Conduct the test according to 7.1 in GB/T 25087 for shielded cable. 5.15 Peeling force/adhesion test Conduct the test according to 7.2 in GB/T 25085 for single core unshielded cable. Conduct the test according to 7.2 in GB/T 25087 for shielded cable. 5.20 3000h long-term aging test Conduct the test according to 10.1 in GB/T 25085 for single core unshielded cable. Conduct the test according to 10.1 in GB/T 25087 for shielded cable. 5.21 240h short-term aging test Conduct the test according to 10.2 in GB/T 25085 for single core unshielded cable. Conduct the test according to 10.2 in GB/T 25087 for shielded cable. 5.22 Thermal overload test Conduct the test according to 10.3 in GB/T 25085 for single core unshielded cable. Conduct the test according to 10.3 in GB/T 25087 for shielded cable. 5.24.2 Specimen. Prepare a sample for a single test. Take insulation and sheath that are 600mm long and are stripped by 25mm long at each end. They are bent into "U" shape around a circular shaft with a diameter of 50mm. The stripped ends are machined into hooks so that the specimen can be hung on the grid of the aging box. The number of specimens to be prepared is shown in Table 5.6 Inspection rules6.1 General The product is tested according to Table 6 (single-core unshielded cable) or Table 7 (shielded cable). In addition to process testing, samples from the first and periodic tests must be sampled from products that pass the process inspection. 6.2 First trial All performances of the product shall be inspected. The first trail is only carried out once. Unless there is a major change in the structure and materials of the product, no need to repeat. 6.4 Process test It shall be sampled by batch or continuously. The number of samples shall be no less than 10%, or no less than 3 pieces.7 Packaging and packaging mark7.1 Packaging 7.1.1 The finished cable shall be properly packaged in shafts, loops or in barrels so as to accommodate transport and delivery. The number of packages is 50 m or an integral multiple thereof. 7.1.4 Joints and defects shall be clearly marked. Allow removal of 30mm to 100mm insulation as a mark. 7.2 Packaging mark Each packaging unit shall be labeled. The label shall at least mark the following ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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