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GB/T 25085 is predicted to consist 10 parts under the general title Road vehicles - Automotive cables: ——Part 1: Vocabulary and design guidelines; ——Part 2: Testing methods; —— part 3: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core copper conductor cables; —— part 4: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core aluminium conductor cables; ——Part 5: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1 000 V a.c. or 1 500 V d.c. single-core copper conductor cables; ——Part 6: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. Or 1,500 V d.c. single-core aluminium conductor cables; ——Part 7: Dimensions and requirements for 30 V a.c. or 60 V d.c. shielded and unshielded multi-core and single-core copper conductor cables with round sheath; ——Part 8: Dimensions and requirements for 30 V a.c. or 60 V d.c. shielded and unshielded multi-core and single-core aluminium conductor cables with round sheath; ——Part 9: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. shielded and unshielded multi-core and single-core copper conductor cables with round sheath; ——Part 10: Dimensions and requirements for 600 V a.c. or 900 V d.c. as well as 1,000 V a.c. or 1,500 V d.c. shielded and unshielded multi-core and single-core aluminium conductor cables with round sheath. This is Part 3 of GB/T 25085. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 25085-2010 Road vehicles - 60 V and 600 V single-core cables, the following main technical changes have been made with respect to GB/T 25085-2010: ——The clause “Normative references” is modified (see clause 2; clause 2 of Edition 2010) ; ——The test content of cross-sectional area for dimension inspection is added (see 5.2.4); ——The test content of in-process cable outside diameter in dimension inspection is added (see 5.2.5); ——The test content of determination of temperature coefficients in electrical property test is added (see 5.3.2); ——The test content of withstand voltage after environmental testing in electrical property test is added (see 5.3.4); ——The test content of breaking force of the finished cable in mechanical property test is added (see 5.4.3); ——The cyclic bending test conditions in mechanical property test is added (see 5.4.4); ——The flexibility test content in mechanical property test is added (see 5.4.5); ——The test content of stress cracking resistance test in environmental test is added (see 5.5.13). This part, by means of translation, is identical to ISO 19642-3: 2019 Road vehicles - Automotive cables - Part 3: Dimensions and requirements for 30 V a.c. or 60 V d.c. single core copper conductor cables. Editorial changes have been made in this part as follows: ——The warning in ISO 19642-3: 2019 has been moved to 4.2 of this part; ——The "×" has been replaced with "√” (see Table 2); ——The "×" has been replaced with "-” (see Table 3, Table 5, Table 7 and Table A.1); ——Note has been added, and the reference information of relevant domestic standards has been given (see Note 2 in Table 1); ——The Annex A (informative) “Product model list” has been added; ——The "Bibliography" has been modified (see Bibliography). This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This part is under the jurisdiction of SAC/TC 114 National Technical Committee of Auto Standardization. The previous edition of this part is as follow: ——GB/T 25085-2010. Road vehicles - Automotive cables - Part 3: Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core copper conductor cables 1 Scope This part of GB/T 25085 specifies the dimensions and requirements for single-core copper conductor cables intended for general purpose vehicle applications where the nominal system voltage is less than or equal to 30 V a.c. or less than or equal to 60 V d.c. This part is applicable to single-core cables for road vehicles, and also to the cores of multi-core cables. 2 Normative references The 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. ISO 19642-1 Road vehicles - Automotive cables - Part 1: Vocabulary and design guidelines ISO 19642-2: 2019 Road vehicles - Automotive cables - Part 2: Test methods EN 13602 Copper and copper alloys - Drawn, round copper wire for the manufacture of electrical conductors ASTM B1 Standard specification for hard drawn copper wire ASTM B3 Standard specification for soft or annealed copper wire ASTM B33 Standard specification for tin coated soft or annealed copper wire for electrical purposes ASTM B298 Standard specification for silver coated soft or annealed copper wire ASTM B355 Standard specification for nickel coated soft or annealed copper wire 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 19642-1 apply. 4 General requirements 4.1 General test conditions The test shall be carried out according to Table 2 under the test conditions specified in ISO 19642-2. If suppliers and customers agree upon modifications or changes to the methods and requirements, all the changes and modifications shall be clearly documented. 4.2 Safety concerns The use of this part can involve hazardous materials, operations and equipment. This part does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this part to establish appropriate safety practices and determine the applicability of regulatory limitations prior to use. 4.3 Voltage range The cable described in this part is limited to 30 V a.c. and 60 V d.c. maximum. 4.4 Temperature classes All temperature classes in ISO 19642-1 are suitable for this part. 4.5 Conductor material The conductors shall consist of plain or coated copper strands as shown in Table 1. Conductor sizes greater than or equal to 0.5 mm2 shall consist of soft annealed copper or annealed compressed wires. Conductor sizes less than 0.5 mm2 shall consist of soft annealed copper, soft annealed compressed copper, hard un-annealed copper or a copper alloy. The specifications for the conductors shall be completed by material specifications. Elongation requirements shall be established by agreement between the customer and the supplier. The finished cable shall meet the resistance and cross-sectional area (CSA) requirements of Table 6 for all conductors except alloys. When an alloy is used, the resistance requirement shall be established by agreement between the customer and the supplier. Note: Examples for strands are shown in Annex A. Table 1 Conductor specifications Conductor type Standard number Hard-drawn copper wire ASTM B1 Soft or annealed copper wire ASTM B3 or EN 13602 Tinned soft or annealed copper wire ASTM B33 or EN 13602 Silver-coated soft or annealed copper wire ASTM B298 Nickel-coated soft or annealed copper wire ASTM B355 Notes: 1 Silver and Nickel coated conductors are intended for use with high “temperature class ratings”. 2 Those specified in GB/T 3953-2009, GB/T 4910-2009, GB/T 11019-2009 and JB/T 3135-2011 may also referred to for various types of conductor materials. 4.6 Conductors The conductors in the finished cable shall meet the CSA and resistance requirements of Table 6. The maximum diameter of the conductors is standardized and presented in Table 7. The configuration of the stranded conductor is not standardized. Notes: 1 Existing stranding configurations for copper conductors are presented in Table A.1. 2 Preferred stranding configurations for copper conductors are presented in Table A.2. Other stranding configurations may be used for copper conductors provided they meet the above requirements and are agreed between the customer and the supplier. 4.7 Insulation thickness The following three different insulation thicknesses are allowed in this part: a) thick wall insulation; b) thin wall insulation; c) ultra-thin wall insulation. The minimum wall thickness requirements for the different conductor sizes are standardized and specified in Table 7. The nominal wall thickness is derived by Equation (1): (1) where, Wmin——the minimum wall thickness, mm; Wnom——the nominal wall thickness, mm, 4.8 Cable outside diameter The cable outside diameter for each conductor size and insulation thickness is standardized and specified in Table 7. 4.9 Representative conductor sizes for testing When a test is required, all combinations of conductor size, insulation thickness and insulation formulation shall meet the specified requirements. However, if testing of representative conductor sizes is permitted by agreement between the customer and the supplier, compliance for a cable family may be demonstrated by testing examples of large and small conductor sizes only. 4.10 Test items and requirements Table 2 provides a list of all relevant tests in ISO 19642-2:2019 for single core cables. Table 2 Test items Test items (Serial numbers of items are consistent with those in ISO 19642-2:2019) Mandatory If required c In process a Initial certification Periodic b Initial certification Periodic b 5.1 Dimensional tests 5.1.2 Cable outside diameter - √ √ - - 5.1.3 Insulation thickness - √ √ - - 5.1.4 Conductor diameter - - - √ √ 5.1.5 Cross sectional area - - - √ √ 5.1.6 In‑process cable outside diameter √ - - - - 5.2 Electrical tests 5.2.1 Conductor resistance - √ √ - - 5.2.2 Determination of temperature coefficients - √ - - - 5.2.3 Withstand voltage - √ √ - - 5.2.4 Withstand voltage after environmental testing d - - - - - 5.2.5 Insulation faults √ - - - - 5.2.6 Insulation volume resistivity - - - √ √ 5.3 Mechanical tests 5.3.1 Strip force - - - √ √ 5.3.2 Abrasion e 5.3.2.4 Sandpaper abrasion test - √ √ - - 5.3.2.5 Scrape abrasion test - √ √ - - 5.3.3 Breaking force of the finished cable - - - √ - 5.3.4 Cyclic bending - - - √ - 5.3.5 Flexibility - - - √ - 5.4 Environmental tests 5.4.1 Specimen preparation and winding tests d 5.4.2 Long term heat ageing, 3,000 h at temperature class rating - √ - - - 5.4.3 Short term heat ageing, 240 h at temperature class rating +25℃ - √ √ - - 5.4.4 Thermal overload, 6 h at temperature class rating +50℃ - - - √ √ 5.4.5 Pressure test at high temperature - √ √ - - 5.4.6 Shrinkage by heat - √ √ - - 5.4.7 Low temperature winding - √ √ - - 5.4.8 Cold impact - - - √ √ 5.4.9 Temperature and humidity cycling f - - - √ - 5.4.10 Resistance to hot water f - √ - - - 5.4.11 Resistance to liquid chemicals f,g - √ - √ - 5.4.12 Durability of cable marking f - - - √ √ 5.4.13 Stress cracking resistance f - - - √ - 5.4.14 Resistance to ozone f - - - √ - 5.4.15 Resistance to flame propagation - √ √ - - Notes: 1 “√”: Test shall be performed according to ISO 19642-2. 2 “-”: Test is not required. 3 See Annex NA for the type and specification of product. a A test made on the entire cable lot during or after manufacture. b The frequency of periodic testing shall be established by agreement between the customer and the supplier. c The usage of "If required” tests shall be established by agreement between the customer and the supplier. d These tests are only used in preparation and after environmental endurance tests. e Only one of the abrasion tests has to be performed by agreement between the customer and the supplier. f Compliance for a cable family may be demonstrated by testing examples of large and small conductor sizes only. g Some fluids are for “Initial certification” and others are “If required” 5 Technical requirements 5.1 General The cables shall be tested per ISO 19642-2 according to their temperature class rating. The cables shall be tested as specified in Table 2. Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 4.1 General test conditions 4.2 Safety concerns 4.3 Voltage range 4.4 Temperature classes 4.5 Conductor material 4.6 Conductors 4.7 Insulation thickness 4.8 Cable outside diameter 4.9 Representative conductor sizes for testing 4.10 Test items and requirements 5 Technical requirements 5.1 General 5.2 Dimensional tests 5.3 Electrical tests 5.4 Mechanical tests 5.5 Environmental tests Annex A (informative) Conductor sizes, number of strands and strand diameters Annex NA (informative) Product model list Bibliography ICS 43.040.10 T 36 中华人民共和国国家标准 GB/T 25085.3—2020/ISO 19642-3：2019 代替GB/T 25085—2010 道路车辆 汽车电缆 第3部分：交流30 V或直流60 V 单芯铜导体电缆的尺寸和要求 Road vehicles—Automotive cables—Part 3：Dimensions and requirements for 30 V a.c. or 60 V d.c. single-core copper conductor cables (ISO 19642-3：2019，IDT) 2020-06-02发布 2020-12-01实施 国家市场监督管理总局 国家标准化管理委员会 发布 前言 GB/T 25085《道路车辆汽车电缆》预计分为10个部分： ——第1部分：词汇和设计指南； ——第2部分：试验方法； ——第3部分：交流30 V或直流60 V单芯铜导体电缆的尺寸和要求； ——第4部分：交流30 V或直流60 V单芯铝导体电缆的尺寸和要求； ——第5部分：交流600 V或直流900 V、交流1 000 V或直流1 500 V单芯铜导体电缆的尺寸和要求； ——第6部分：交流600 V或直流900 V、交流1 000 V或直流1 500 V单芯铝导体电缆的尺寸和要求； ——第7部分：交流30 V或直流60 V圆形护套的屏蔽和非屏蔽多芯和单芯铜导体电缆的尺寸和要求； ——第8部分：交流30 V或直流60 V圆形护套的屏蔽和非屏蔽多芯和单芯铝导体电缆的尺寸和要求； ——第9部分：交流600 V或直流900 V、交流1 000 V或直流1 500 V圆形护套的屏蔽和非屏蔽多芯和单芯铜导体电缆的尺寸和要求； ——第10部分：交流600 V或直流900 V、交流1 000 V或直流1 500 V圆形护套的屏蔽和非屏蔽多芯和单芯铝导体电缆的尺寸和要求。 本部分为GB/T 25085的第3部分。 本部分按照GB/T 1.1—2009给出的规则起草。 本部分代替GB/T 25085—2010《道路车辆 60 V和600 V单芯电线》，与GB/T 25085—2010相比，主要技术变化如下： ——修改了规范性引用文件(见第2章，2010年版的第2章)； ——增加了尺寸检查的横截面积试验内容(见5.2.4)； ——增加了尺寸检查的制造过程中的电缆外径试验内容(见5.2.5)； ——增加了电气性能试验中温度系数测试内容(见5.3.2)； ——增加了电气性能试验中环境试验后耐电压测试内容(见5.3.4)； ——增加了机械性能试验中成品电缆拉断力试验内容(见5.4.3)； ——增加了机械性能试验中循环弯曲试验条件内容(见5.4.4)； ——增加了机械性能试验中柔韧性试验内容(见5.4.5)； ——增加了环境试验中耐应力开裂试验内容(见5.5.13)。 本部分使用翻译法等同采用ISO 19642-3：2019《道路车辆 汽车电缆 第3部分：交流30 V或直流60 V单芯铜导体电缆的尺寸和要求》。 本部分做了下列编辑性修改： ——将ISO 19642-3：2019的警示移到了本部分的4.2； ——用“√”代替“×”(见表2)； ——用“加”代替“+”(见表2、5.5.3、5.5.4)； ——用“—”代替“×”(见表3、表5、表7、表A.1)； ——增加了注，给出了相关国内标准的参考信息(见表1中注2)； ——增加了资料性附录NA“产品型号清单”。 ——修改了参考文献。 本部分由中华人民共和国工业和信息化部提出。 本部分由全国汽车标准化技术委员会(SAC/TC 114)归口。 本部分所代替标准的历次版本发布情况为： ——GB/T 25085—2010。 道路车辆 汽车电缆 第3部分：交流30 V或直流60 V 单芯铜导体电缆的尺寸和要求 1 范围 GB/T 25085的本部分规定了一般用途道路车辆用标称系统电压不大于交流30 V或直流60 V单芯铜导体电缆的尺寸和要求。 本部分适用于道路车辆用单芯电缆，也适用于多芯电缆中的线芯。 2规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 ISO 19642-1道路车辆 汽车电缆 第1部分：词汇和设计指南(Road vehicies—Automotive ca-bles—Part 1：Vocabulary and design guidelines) ISO 19642-2：2019道路车辆 汽车电缆 第2部分：试验方法(Road vehicles—Automotive ca-bles—Part 2：Test methods) EN 13602铜和铜合金 用于制造电导体的拉制圆形铜导线(Copper and copper alloys—Drawn，round copper wire for the manufacture of electricalconductors) ASTM B1硬拉铜线标准规范(Standard Specification for Hard Drawn Copper Wire) ASTM B3软或退火铜线标准规范(Standard Specification for Soft or Annealed Copper Wire) ASTM B33导电用镀锡软或退火铜线标准规范(Standard Specification for Tin Coated Soft or Annealed Copper Wire for Electrical Purposes) ASTM B298镀银软或退火铜线标准规范(Standard Specification for Silver Coated Soft or An-nealed Copper Wire) ASTM B355镀镍软或退火铜线标准规范(Standard Specification for Nickei Coated Soft or An-nealed Copper Wire) 3术语和定义 ISO 19642-1界定的术语和定义适用于本文件。 4 一般要求 4.1一般测试条件 应在ISO 19642-2规定的试验条件下，按表2的规定进行试验。 如供需双方同意修改或变更试验方法和要求，应记录所有变更和修改。 4.2安全注意事项 本部分的使用可能涉及危险材料、操作和设备。本部分无意解决与使用本部分相关的可能存在的所有安全问题。本部分使用者有责任在使用前制定适当的安全规程并确定法规限制的适用性。 4.3 电压范围 本部分中电缆的电压上限为交流30 V和直流60 V。 4.4 温度等级 本部分按ISO 19642-1中的所有温度等级执行。 4.5 导体材料 导体应由表1所示的裸铜或镀层铜的铜丝绞合而成。 规格大于或等于0.5 mm2的导体应由退火软铜丝或退火压缩铜丝组成。 规格小于0.5 mm2的导体应由退火软铜丝、退火软压缩铜丝、不退火硬铜丝或铜合金丝组成。 导体具体要求应符合所用材料的规定。伸长率由供需双方协商确定。 除合金之外的所有导体，其成品电缆的电阻和横截面积(CSA)应符合表6的规定。当使用合金导体时，电阻要求应由供需双方协商确定。 注：绞合结构示例参见附录A。 表1导体说明 导体类型 标准编号 硬拉铜丝 ASTM B1 软或退火铜丝 ASTM B3或EN 13602 镀锡软或退火铜丝 ASTM B33或EN 13602 镀银软或退火铜丝 ASTM B298 镀镍软或退火铜丝 ASTM B355 注1：镀银或镀镍铜丝用在高“额定温度等级”的电缆。 注2：各种类型的导体材料还可参考GB/T 3953—2009、GB/T 4910—2009、GB/T 11019—2009、JB/T 3135—2011。 4.6导体 成品电缆的导体应符合表6中CSA和电阻的规定。 导体的最大直径应符合表7的规定。 导体的绞合结构不是规范性要求。 注1：铜导体的现有绞合结构参见表A.1。 注2：铜导体的推荐绞合结构参见表A.2。 其他绞合结构由供需双方协商，但应符合上述规定。 4.7 绝缘厚度 本部分规定以下三种不同的绝缘厚度： a) 厚壁绝缘； b)薄壁绝缘； c)超薄壁绝缘。 不同导体规格的最小壁厚应符合表7的规定。 标称壁厚按式(1)计算： Wnom=1.25×Wmin或 (1) 式中： Wmin——最小壁厚，单位为毫米(mm)； Wnom——标称壁厚，单位为毫米(mm)。 4.8 电缆外径 各个导体规格和绝缘厚度的电缆外径应符合表7的规定。 4.9试验用代表性导体规格 当需进行一项测试时，导体规格、绝缘厚度和绝缘材料的所有组合均应符合相应规定。 但是，当供需双方协商允许对代表性规格进行测试时，可仅测试较大和较小的导体规格来证明电缆族的符合性。 4.10试验项目及要求 ISO 19642-2：2019中适用单芯电缆的相关试验项目见表2。 表2试验项目 试验项目 (项目序号与ISO 19642-2：2019一致) 必做试验 选做试验c 过程a 首次鉴定 周期b 首次鉴定 周期b 5.1尺寸检查 5.1.2电缆外径 — √ √ — — 5.1.3 绝缘厚度 — √ √ — — 5.1.4 导体直径 — — — √ √ 5.1.5横截面积 — — — √ √ 5.1.6制造过程中的电缆外径 √ — — — — 5.2电气性能试验 — — — — — 5.2.1导体电阻 — √ √ — — 5.2.2温度系数测试 — √ — — — 5.2.3耐电压 — √ √ — — 5.2.4环境试验后耐电压d — — — — — 5.2.5绝缘缺陷 √ — — — — 5.2.6绝缘体积电阻率 — — — √ √ 5.3机械性能试验 5.3.1 剥离力 — — — √ √ 5.3.2 耐磨e 5.3.2.4拖磨试验 — √ √ — — 5.3.2.5 刮磨试验 — √ √ — — 5.3.3成品电缆拉断力 — — — √ — 5.3.4循环弯曲 — — — √ — 5.3.5 柔韧性 — — — √ — 5.4环境试验 — — — — — 5.4.1试样制备和卷绕试验d — — — — — 5.4.2额定温度等级下的3 000 h长期热老化 — √ — — — 5.4.3额定温度等级加25℃下的240 h短期热老化 — √ √ — — 5.4.4额定温度等级加50℃下的6 h热过载 — — — √ √ 5.4.5高温压力试验 — √ √ — — 5.4.6 热收缩 — √ √ — — 5.4.7 低温卷绕 — √ √ — — 5.4.8冷冲击 — — — √ √ 5.4.9温度和湿度交变f — — — √ — 5.4.10 耐热水f — √ — — — 5.4.11耐液体化学品f,g — √ — √ — 5.4.12 电缆标志耐久性f — — — √ √ 5.4.13耐应力开裂f — — — √ — 5.4.14 耐臭氧f — — — √ — 5.4.15抗延燃 — √ √ — — 注1：“√”表示符合ISO 19642-2规定的试验项目。 注2：“—”表示不需要测试的试验项目。 注3：产品的型号及规格范围参见附录NA。 a在制造过程中或制造后对整批电缆进行的试验项目。 b周期试验的频次应由供需双方协商确定。 c“选做试验”的使用应由供需双方协商确定。 d该试验项目仅用于样品制备和环境耐久性测试之后。 e应经供需双方协商，仅进行一项耐磨试验。 f可通过仅测试大和小的导体规格来证明电缆族的符合性。 g一些液体用于“首次鉴定”，其余液体用于“选做试验”。 5 技术要求 5.1 总则 电缆应根据其额定温度等级按ISO 19642-2进行试验。 电缆应按表2规定进行试验。 5.2 尺寸检查 5.2.1 电缆外径 电缆外径测量值均应在表7中规定的限值内。 5.2.2 绝缘厚度 绝缘厚度测量值应不小于表7中规定的最小值。 5.2.3 导体直径 导体直径测量值应不大于表7中规定的最大值。 5.2.4横截面积(CSA) 横截面积测量值均应在表6中规定的限值内。 5.2.5 制造过程中的电缆外径 应对制造过程中的电缆外径进行连续监测。 制造过程中的电缆外径测量值均应在表7中规定的限值内。 5.3 电气性能试验 5.3.1 导体电阻 导体电阻测量值应不大于表6中规定的最大值。 5.3.2温度系数测定要求 对于纯铜，αρ=3.93×10-3K-1。 对于铜合金，αρ应按ISO 19642-2：2019中5.2.2的规定测定。 5.3.3 耐电压 施加电压1 kV，施加时间30 min，绝缘应不被击穿。 注：不需要爬升电压。 5.3.4环境试验后耐电压 施加电压1 kV，施加时间1 min，绝缘应不被击穿。 5.3.5 绝缘缺陷 持续施加交流3 kV电压，绝缘应不被击穿。 5.3.6绝缘体积电阻率 绝缘体积电阻率应不小于1×109 Ω·mm。 5.4机械性能试验 5.4.1 剥离力 测量力应在供需双方协商值范围内。 5.4.2 耐磨 5.4.2.1 总则 试验仅适用于导体规格不大于6 mm2的电缆，应进行拖磨或刮磨任一试验。 供需双方应明确采用何种试验。 导体规格大于6 mm2的电缆不必进行耐磨试验。 5.4.2.2 拖磨试验 电缆试样按表3的要求附加重物后进行试验。 电缆试样4个读数的平均值应不小于表3中的规定值。 表3拖磨试验要求 导体规格 mm2 厚壁 薄壁 超薄壁 附加重物a kg 最小砂带长度 mm 附加重物a kg 最小砂带长度 mm 附加重物a kg 最小砂带长度 mm 0.13 — — 0.1 200 0.05 150 0.22 225 175 0.35 250 200 0.5 0.5 400 0.2 300 0.1 175 0.75 410 350 200 1 420 400 225 1.25 425 425 240 1.5 430 450 250 2 450 500 275 2.5 1.5 280 0.5 250 0.2 125 3 330 300 — — 4 400 350 5 450 430 6 500 500 注：“—”表示电缆类型不存在。 a施加在试样上的垂直力应是支架、转臂、支撑杆和附加重物所施加的力的总和。 5.4.2.3 刮磨试验 电缆试样按表4的规定施加总垂直力。 最小循环次数应不小于表4中的规定值。 表4刮磨试验要求 导体规格 mm2 0.13 0.22 0.35 0.5 0.75 1 1.25 1.5 2 2.5 3 4 5 6 垂直力 N 4.00 7.00 偏差 N ±0.05 最小循环次数 100 125 150 300 350 400 400 450 500 550 600 700 700 700 5.4.3成品电缆拉断力 需要测试的电缆规格和拉断力应由供需双方协商。 5.4.4循环弯曲 试验仅适用于导体规格不大于25 mm2的电缆。 试验的要求应由供需双方协商。 5.4.5柔韧性试验 试验适用于导体规格不小于8 mm2的电缆。 试验的要求应由供需双方协商。 5.5环境试验 5.5.1 试样制备和卷绕试验 ISO 19642-2：2019中5.4.1规定了环境试验中用于制备试样的芯轴尺寸。 还规定了检测由环境应力引起缺陷进行的卷绕试验的要求。 5.5.2额定温度等级下的3 000 h长期热老化 试样应在额定温度等级的上限温度老化3 000 h。 试样卷绕后，应不露导体。 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 5.5.3额定温度等级加25℃下的240 h短期热老化 试样应在额定温度等级的上限温度加25℃老化240 h。 试样卷绕后，应不露导体。 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 5.5.4额定温度等级加50℃下的6 h热过载 试样应在额定温度等级的上限温度加50℃老化6 h。 试样卷绕后，应不露导体。 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 5.5.5高温压力试验 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 5.5.6 热收缩 试样任一端最大收缩应不超过2 mm。 5.5.7 低温卷绕 试样应在额定温度等级的下限温度放置4 h。 试样卷绕后，应不露导体。 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 5.5.8 冷冲击 试样应按表5中要求的重锤质量进行试验。 试样冲击后，应不露导体。 试样在环境试验后的耐电压(5.3.4)期间，绝缘应不被击穿。 表5冷冲击试验要求 导体规格(a) mm2 重锤质量 g 厚壁 薄壁 超薄壁 a≤0.35 — 100 100 0.35 |
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| GB/T 25085.3-2020, GB 25085.3-2020, GBT 25085.3-2020, GB/T25085.3-2020, GB/T 25085.3, GB/T25085.3, GB25085.3-2020, GB 25085.3, GB25085.3, GBT25085.3-2020, GBT 25085.3, GBT25085.3 |