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GB/T 42714-2023: General specification for electromagnetic shielding heat-shrinkable tubes
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 42714-2023 | English | 309 |
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General specification for electromagnetic shielding heat-shrinkable tubes
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GB/T 42714-2023
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PDF similar to GB/T 42714-2023
Basic data | Standard ID | GB/T 42714-2023 (GB/T42714-2023) | | Description (Translated English) | General specification for electromagnetic shielding heat-shrinkable tubes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N05 | | Classification of International Standard | 17.220.99 | | Word Count Estimation | 16,133 | | 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 42714-2023: General specification for electromagnetic shielding heat-shrinkable tubes---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.
ICS17:220:99
CCSN05
National Standards of People's Republic of China
General Specification for Electromagnetic Shielding Heat Shrink Tubing
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 grade 2
5 Technical requirements 2
6 Test method 4
7 Inspection rules 6
8 Labeling, packaging, transportation and storage7
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:
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 on Electromagnetic Shielding Materials (SAC/TC323):
This document is drafted by: Jinan Zhongzheng New Materials Co:, Ltd:, Shanghai Institute of Metrology and Testing Technology, Anfang High-Tech Electromagnetic Safety Technology
(Beijing) Co:, Ltd:, Institute of Metal Research, Chinese Academy of Sciences, Maxim New Materials Co:, Ltd:, Jiangsu Provincial Institute of Quality and Standardization, China
The 29th Institute of Electronic Technology Group Corporation, Liaoning Provincial Institute of Metrology:
The main drafters of this document: Li Changlin, Zuo Jiansheng, Chen Chaochan, Ma Song, Chen Weibin, Zhu Jiangang, Yu Xiaolei, Yang Hong, Miao Yi, Wang Zhengju,
Lu Fumin, Wang Fengwei:
General Specification for Electromagnetic Shielding Heat Shrink Tubing
1 Scope
This document specifies the classification, technical requirements, inspection rules, marking, packaging, transportation and storage requirements of electromagnetic shielding heat shrinkable tubes, and describes
corresponding test methods:
This document is applicable to the production and quality control of heat shrinkable tubes with electromagnetic shielding function within the frequency range of 14kHz~10GHz:
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/T 191 Packaging, storage and transportation icon marks
GB/T 1040:2-2022 Determination of tensile properties of plastics - Part 2: Test conditions for molded and extruded plastics
GB/T 1551 Determination of Resistivity of Silicon Single Crystal Inline Four-Probe Method and DC Two-Probe Method
GB/T 1771 Determination of neutral salt spray resistance of paints and varnishes
GB/T 2406:2-2009 Determination of combustion behavior of plastics by oxygen index method - Part 2: Room temperature test
GB/T 2423:22-2012 Environmental testing - Part 2: Test methods Test N: Temperature change
GB/T 7141 Plastic heat aging test method
GB/T 26667-2021 Terminology of Electromagnetic Shielding Materials
GB/T 30142-2013 Measurement method for shielding effectiveness of planar electromagnetic shielding materials
GB/T 31838:2 Dielectric and resistance properties of solid insulating materials Part 2: Resistance properties (DC method) Volume resistance and
volume resistivity
DL/T 1059-2007 Heat-shrinkable tubes for power equipment busbars
JB/T 7829-2006 Rated voltage 1kV (Um=1:2kV) to 35kV (Um=40:5kV) power cable heat shrinkable terminal
3 Terms and Definitions
GB/T 26667-2021, DL/T 1059-2007 and the following terms and definitions apply to this document:
3:1
The use of conductive, magnetic or both conductive and magnetic materials to reduce or block the propagation of electromagnetic fields to designated areas:
[Source: GB/T 26667-2021, 3:1:6]
3:2
Surface resistivity surfaceresistivity
Rs:
The ratio of the DC electric field intensity to the linear current density on the surface layer of the material, that is, the surface resistance per unit area:
Note: The unit of surface resistivity is expressed in ohm (Ω):
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