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GB/T 42735-2023 English PDF

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GB/T 42735-2023: Heat-shrinkable polyolefin sleeving-stress control
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GB/T 42735-2023English239 Add to Cart 3 days [Need to translate] Heat-shrinkable polyolefin sleeving-stress control Valid GB/T 42735-2023

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Basic data

Standard ID GB/T 42735-2023 (GB/T42735-2023)
Description (Translated English) Heat-shrinkable polyolefin sleeving-stress control
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K15
Classification of International Standard 29.035.20
Word Count Estimation 11,196
Date of Issue 2023-05-23
Date of Implementation 2023-12-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 42735-2023: Heat-shrinkable polyolefin sleeving-stress control

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29:035:20 CCSK15 National Standards of People's Republic of China Stress Control Polyolefin Heat Shrink Tubing Sheet282: Heat-shrinkable, polyolefinsleeving-Stresscontrol, MOD) Released on 2023-05-23 2023-12-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test conditions 1 5 Technical Requirements 1 5:1 General requirements 1 5:2 General requirements and performance requirements 1 6 Test method 2 6:1 Inner diameter, wall thickness and concentricity 2 6:2 Thermal Shock 3 6:3 Length change 3 6:4 Low temperature bendability 3 6:5 Tensile strength and elongation at break3 6:6 Secant modulus at 2% elongation3 6:7 Fluid resistance 3 6:8 Thermal aging 3 6:9 Dielectric constant and dissipation factor 3 6:10 Volume resistivity3 6:11 Long-term thermal aging3 7 Inspection rule 3 7:1 Inspection classification 3 7:2 Inspection item 3 7:3 Batch rules and sampling plan 5 7:4 Judgment rule 5 8 Labeling, packaging, transportation and storage 5 8:1 Flag 5 8:2 Packaging 5 8:3 Transport and storage 5 Appendix A (Informative) Inner diameter and wall thickness 6 Table 1 Performance requirements 2 Table 2 Selection of fluid requirements 2 Table 3 factory inspection 4 Table 4 Type inspection 4 Table A:1 Inner diameter and wall thickness (middle wall) 6 Table A:2 Inner diameter and wall thickness (thick wall) 6

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is modified to adopt IEC 60684-3-282:2010 "Insulated hoses Part 3: Specifications for various types of hoses Part 282: should Force Control Polyolefin Heat Shrink Tubing: Compared with IEC 60684-3-282:2010, this document has made the following structural adjustments: --- The chapter "Terms and Definitions" has been added; ---Chapter 5 corresponds to Chapter 1, Chapter 5 and Table 1 and Table 2 of IEC 60684-3-282:2010, of which 5:1 corresponds The third paragraph to the sixth paragraph of Chapter 1 of IEC 60684-3-282:2010, 5:2 corresponds to Chapter 5 of IEC 60684-3-282:2010; ---Chapter 6 corresponds to the test method in column 2 and the remarks in column 6 in Table 1 of IEC 60684-3-282:2010; --- The third paragraph of 7:4 corresponds to Chapter 6 of IEC 60684-3-282:2010: The technical differences between this document and IEC 60684-3-282:2010 and their reasons are as follows: --- Deleted the seventh paragraph of Chapter 1 of IEC 60684-3-282:2010 to meet my country's national conditions and facilitate application; --- Deleted the normative references "IEC 60502 (all parts)", "IEC 60757:1983" and "HD629" to comply with our country situation, easy to apply; --- Deleted Chapter 3 "Naming" of IEC 60684-3-282:2010 to meet my country's national conditions and facilitate application; --- Deleted Table 1 "Storage Dimensional Stability" of IEC 60684-3-282:2010 to meet my country's national conditions and facilitate application; --- Added the normative reference "GB/T 2828:1-2012" (see 7:3) to meet the technical conditions of our country and facilitate the application; --- Replaced IEC 60684-2:1997 with the normatively referenced GB/T 7113:2-2014, the degree of consistency between the two documents To modify (see Chapter 6) to meet the technical conditions of our country and facilitate application; --- Changed the "dielectric constant" and changed 5 to 15 (see Table 1) to meet the technical conditions of our country and facilitate application; --- Changed the "length change" and changed "-10" to the minimum value (see Table 1) to meet the technical conditions of our country and facilitate application; --- Increased "dielectric loss factor" and its "test method" (see Table 1 and 6:9) to control heat generation, in line with my country's technical conditions; --- Added the test temperature tolerance of "low temperature bendability" and the immersion time and completion time of "fluid resistance" (see 6:4 and 6:7), in order to conform to my country's national conditions and facilitate application; --- The chapter "Inspection Rules" (see Chapter 7) has been added to meet the technical conditions of our country and facilitate application; --- The chapter "Signs, packaging, transportation and storage" (see Chapter 8) has been added to meet the technical conditions of our country and facilitate application; --- Changed the "wall thickness" in the "Appendix" to "minimum value after shrinkage" (see Table A:1 and Table A:2) to meet the technical conditions of our country and facilitate application: The following editorial changes have been made to this document: --- In order to coordinate with existing standards, change the name of the standard to "stress-controlled polyolefin heat-shrinkable tube"; --- The unit "K" is replaced by the unit "℃": Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Electrical Equipment Industry Association: This document is under the jurisdiction of the National Standardization Technical Committee of Insulation Materials (SAC/TC51): This document is drafted by: Shenzhen Hongshang Materials Technology Co:, Ltd:, Shenzhen Wall Nuclear Materials Co:, Ltd:, Changchun Zhongkeying Chemical Special Materials Co:, Ltd:, Dalian United Polymer Materials Co:, Ltd:, Shenzhen Gongyin Electronic Materials Co:, Ltd:, Zhongke Yinghua Chang Chungao Technology Co:, Ltd:, Guilin Electrical Appliance Science Research Institute Co:, Ltd: The main drafters of this document: Zhai Yongai, Kang Tuo, Wang Haibo, Wang Rui, Mai Jiaxing, Xu Yiquan, Xiong Xin, Zhong Xiaoguang, Ma Linquan: Stress Control Polyolefin Heat Shrink Tubing

1 Scope

This document specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage: This document applies to stress-controlled polyolefin heat-shrinkable tubing with a nominal shrinkage ratio of 3:1 and a maximum service temperature of 100°C:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB 2536-2011 Unused mineral insulating oils for electrical fluid transformers and switches (IEC 60296:2003, MOD) Note: There is no technical difference between the referenced content of GB 2536-2011 and the referenced content of IEC 60296:2003: GB/T 2828:1-2012 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling retrieved by acceptance quality limit (AQL) Plan (ISO 2859-1:1999, IDT) GB/T 7113:1-2014 Insulating hoses - Part 1: Definitions and general requirements (IEC 60684-1:2003, MOD) Note: There is no technical difference between the referenced content of GB/T 7113:1-2014 and the referenced content of IEC 60684-1:2003: GB/T 7113:2-2014 Insulating hoses - Part 2: Test methods (IEC 60684-2:2003, MOD)

3 Terms and Definitions

This document does not have terms and definitions that need to be defined:

4 Test conditions

Unless otherwise specified, stress-controlled polyolefin heat-shrinkable tubing should be shrunk at:200°C ± 3°C in a forced-air circulation oven: Test after 10min±1min:

5 Technical Requirements

5:1 General requirements Stress control polyolefin heat shrink tubing is divided into two types: type A (medium wall) and type B (thick wall), and the inner diameter of type A (medium wall) usually does not exceed 65:0mm, the inner diameter of type B (thick wall) usually does not exceed 95:0mm, the color is generally black, see Appendix A for the inner diameter and wall thickness, and can also be obtained from the supplier: It needs to be negotiated and determined by both parties: In special applications, the selection of materials should not only meet the requirements of this document, but also meet the performance requirements in the application: Require: 5:2 General and performance requirements In addition to the general requirements specified in GB/T 7113:1-2014, the stress-controlled polyolefin heat-shrinkable tube should also meet the requirements listed in Table 1, Table 2 requirements:

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