GB/T 29631-2025 Flexible and torsion resistant cables of rated voltages up to and including 1.8/3kV for wind turbine
1 Scope
This document specifies the product code, marking, technical requirements, inspection rules, test methods and packaging, etc. of flexible and torsion resistant cables of rated voltages up to and including 1.8/3kV for wind turbine used at the connection between turbine and tower in wind power generation equipment or similar occasions.
This document is applicable to flexible and torsion resistant cables for wind power generation systems or similar systems with rated voltage U0/U of 1.8/3kV and below.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 2423.17 Environmental testing for electric and electronic products - Part 2: Test method - Test Ka: Salt mist
GB/T 2423.18 Environmental testing - Part 2: Test methods - Test Kb: Salt mist, cyclic (sodium chloride solution)
GB/T 2900.10 Electrotechnical vocabulary - Electric cables
GB/T 3048.4 Test methods for electrical properties of electric cables and wires - Part 4: Test of DC resistance of conductors
GB/T 3048.5 Test methods for electrical properties of electric cables and wires - Part 5: Test of insulation resistance
GB/T 3048.8 Test methods for electrical properties of electric cables and wires - Part 8: AC voltage test
GB/T 3048.9 Test methods for electrical properties of electric cables and wires - Part 9: Spark test of insulated cores
GB/T 3048.13 Test methods for electrical properties of electric cables and wires - Part 13: Impulse voltage test
GB/T 3956 Conductors of insulated cables
GB/T 4909.2 Test methods for bare wires - Part 2: Measurement of dimensions
GB/T 6995.1 Markings for electric wires and cables - Part 1: General requirements
GB/T 16927.1 High-voltage test techniques - Part 1: General definitions and test requirements
GB/T 18380.12 Tests on electric and optical fibre cables under fire conditions - Part 12: Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1kW pre-mixed flame
GB/T 18380.35 Tests on electric and optical fibre cables under fire conditions - Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category C
JB/T 8137 (all parts) Delivery drums for wires and cables
JB/T 10696.7 Test methods for determining mechanical, physical and chemical properties of electric cables and wires - Part 7: Tear test
IEC 60,719 Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750V
IEC 60811-201 Electric and optical fibre cables – Test methods for non-metallic materials - Part 201: General tests - Measurement of insulation thickness
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.10 and the following apply.
3.1
rated voltage
reference voltage for cable design, service and electrical performance test
3.2
batch
products of the same model and specification ordered at one time
Note: If there are products of different models and specifications in one order, different models and specifications will be regarded as different batches.
3.3
routine test
R
tests made by the manufacturer on each manufactured length of cable to check that each length meets the specified requirements
3.4
sample tests
S
tests made by the manufacturer on samples of completed cable or components taken from a completed cable, at a specified frequency, so as to verify that the finished product meets the specified requirements
3.5
type tests
T
tests made before supplying, on a general commercial basis, a type of cable covered by this document, in order to demonstrate satisfactory performance characteristics to meet the intended application
Note: These tests are of such a nature that, after they have been made, they need not be repeated, unless changes are made in the cable materials, design or manufacturing process which might change the cable characteristics.
4 Service characteristics
4.1 Rated voltage
The rated voltages U0/U of the cables in this document are marked as: 450/750 V, 0.6/1kV, 1.8/3kV.
U0 represents the voltage r.m.s. between any main insulated conductor and the "ground" (metallic shield, metallic sheath or surrounding medium); U represents the voltage r.m.s. between any two-phase conductors of multicore cable or single-core cable.
Contents
Foreword iii
1 Scope
2 Normative references
3 Terms and definitions
4 Service characteristics
5 Codes, models, specifications and product representation methods
6 Technical requirements
7 Finished cable test
8 Inspection rules
9 Delivery length
10 Packaging, transportation and storage of cables
Annex A (Normative) Performance requirements for cable insulation and sheathing materials
Annex B (Normative) Fictitious calculation method for determination of dimensions of protective coverings
Annex C (Normative) Torsion test
Annex D (Normative) Load-bearing test
Annex E (Normative) Low temperature bending test
Annex F (Normative) Artificial climate aging test
Annex G (Normative) Salt spray test
额定电压1.8 / 3 kV及以下风力发电用耐扭曲软电缆
1 范围
本文件规定了风力发电设备中涡轮机和塔筒连接处或其类似场合用1.8/3kV及以下风力发电用耐扭曲软电缆的产品代号、标志、技术要求、检验规则、试验方法和包装等。
本文件适用于额定电压U0/U为1.8/3kV及以下风力发电系统或类似系统用耐扭曲软电缆。
2 规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中,注日期的引用文件,仅该日期对应的版本适用于本文件;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。
GB/T 2423.17 电工电子产品环境试验第2部分:试验方法试验Ka:盐雾
GB/T 2423.18 环境试验 第2部分:试验方法 试验Kb:盐雾,交变(氯化钠溶液)
GB/T 2900.10 电工术语 电缆
GB/T 3048.4 电线电缆电性能试验方法 第4部分:导体直流电阻试验
GB/T 3048.5 电线电缆电性能试验方法 第5部分:绝缘电阻试验
GB/T 3048.8 电线电缆电性能试验方法 第8部分:交流电压试验
GB/T 3048.9 电线电缆电性能试验方法 第9部分:绝缘线芯火花试验
GB/T 3048.13 电线电缆电性能试验方法 第13部分:冲击电压试验
GB/T 3956 电缆的导体
GB/T 4909.2 裸电线试验方法 第2部分:尺寸测量
GB/T 6995.1 电线电缆识别标志方法 第1部分:一般规定
GB/T 16927.1 高电压试验技术 第1部分:一般定义及试验要求
GB/T 18380.12 电缆和光缆在火焰条件下的燃烧试验 第12部分:单根绝缘电线电缆火焰垂直 蔓延试验1kW预混合型火焰试验方法
GB/T 18380.35 电缆和光缆在火焰条件下的燃烧试验 第35部分:垂直安装的成束电线电缆火焰垂直蔓延试验 C类
JB/T 8137(所有部分) 电线电缆交货盘
JB/T 10696.7 电线电缆机械和理化性能试验方法 第7部分:抗撕试验
IEC 60719 额定电压450/750V及以下圆形铜导体电缆平均外形尺寸的下限和上限的计算(Calculation of the lower and upper limits for the average outer dimensions of cables with circular copper conductors and of rated voltages up to and including 450/750V)
IEC 60811-201 电缆和光缆 非金属材料测试方法 第201部分:通用试验 绝缘厚度测量(Electric and optical fibre cables – Test methods for non-metallic materials -Part201: General tests – Measurement of insulation thickness
3 术语和定义
GB / T2900.10 界定的以及下列术语和定义适用于本文件。
3.1
额定电压 rated voltage
电缆设计、使用和进行电性能试验用的基准电压。
3.2
批batch
一次订货的同型号规格产品。
注: 如果一次订货中有不同型号规格的产品, 则不同的型号规格视为不同的批。
3.3
例行试验 routinetests
R
由制造方在成品电缆的所有制造长度上进行的试验, 以检验所有电缆是否符合规定的要求。
3.4
抽样试验 sample tests
S
由制造方按规定的频度，在成品电缆试样上或在取自成品电缆的某些部件上进行的试验, 以检验电缆是否符合规定要求。
3.5
型式试验 type tests
T
按一般商业原则对本文件所包含的一种类型电缆在供货前所进行的试验，以证明电缆具有能满足预期使用条件的满意性能。
注: 该试验的特点是除非电缆材料、设计或制造工艺的改变可能改变电缆的特性，试验做过以后就不需要重做。
4 使用特性
4.1 额定电压
本文件中电缆的额定电压U0/U标示为:450/750V、0.6/1kV、1.8/3kV。
U0表示任一主绝缘导体与“地”(金属屏蔽、金属套或周围介质)之间的电压有效值;U为多芯电缆或单芯电缆任意两相导体之间的电压有效值。
4.2 电缆正常运行时导体最高温度
电缆正常运行时导体最高温度为:
———电压等级450/750V为90°C;
———电压等级0.6/1kV为90°C、105°C;
———电压等级1.8/3kV为90°C、105°C。
4.3 最小弯曲半径
电缆的最小弯曲半径为电缆直径的6倍。
