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GB/T 4909.2-2009 English PDF

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GB/T 4909.2-2009: Test methods for bare wires -- Part 2: Measurement of dimensions
Status: Valid

GB/T 4909.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4909.2-2009English189 Add to Cart 3 days [Need to translate] Test methods for bare wires -- Part 2: Measurement of dimensions Valid GB/T 4909.2-2009
GB/T 4909.2-1985English199 Add to Cart 2 days [Need to translate] Test methods for bare wires--Measurement of dimensions Obsolete GB/T 4909.2-1985

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Basic data

Standard ID GB/T 4909.2-2009 (GB/T4909.2-2009)
Description (Translated English) Test methods for bare wires -- Part 2: Measurement of dimensions
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K11
Classification of International Standard 29.060.10
Word Count Estimation 8,820
Date of Issue 2009-03-19
Date of Implementation 2009-12-01
Older Standard (superseded by this standard) GB/T 4909.2-1985
Quoted Standard GB/T 1216-2004; GB/T 3048.2-2007; GB/T 4909.1-2009; GB/T 8061-2004; GB/T 21386-2008; JB/T 8788-1998
Regulation (derived from) Announcement of Newly Approved National Standards No. 3, 2009 (No. 143 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the bare wire size measurement test measurement tools, sample preparation, measurement procedures, test results and evaluation and so on. This part is suitable for measuring all kinds of round, rectangular, shaped conductors and stranded conductors dimensions, corner radius, pitch diameter and cross-sectional area than the other. When the measurement accuracy of such dimensions have higher requirements to the appropriate product standards prevail. This part should GB/T 4909. 1-2009 together.

GB/T 4909.2-2009: Test methods for bare wires -- Part 2: Measurement of dimensions

---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.
Test methods for bare wires.Part 2. Measurement of dimensions ICS 29.060.10 K11 National Standards of People's Republic of China Replacing GB/T 4909.2-1985 Test methods for bare wires Part 2. Measure Posted 2009-03-19 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 4909 "Test methods for bare wires" is divided into twelve parts. --- Part 1. General; --- Part 2. size measurement; --- Part 3. Tensile test; --- Part 4. torsion test; --- Part 5. --- bending test repeated bending; --- Part 6. bending test --- unidirectional bending; --- Part 7. winding test; --- Part 8. --- Brinell hardness test method; --- Part 9. continuity of coating --- more sodium sulfide; --- Part 10. Test for continuity of coating --- ammonium persulfate law; --- Part 11. Coating adhesion test; --- Part 12. solderability test methods --- balls. This section GB/T 24909 Part of. This Part replaces GB/T 4909.2-1985 "Test methods for bare wires sizing." Section compared with the GB/T 4909.2-1985 The main changes are as follows. --- According to GB/T 1.1-2000 requirements, and on the formatting has been modified, and the part of the text has been modified; --- Added "Normative References" chapter (1985 edition no; Chapter 2 of this edition); --- Of micrometer load and probe diameters redefined (1985 Version 2.1; 3.1 edition); --- Increased steel skin ruler specifications (1985 Version 2.3; 3.3 edition); --- Added feeler requirements (1985 Version 2.6; 3.6 edition); --- Modify the precision balance Weighing range (1985 Version 2.7; 3.7 edition); --- Modify the requirements of sample preparation (1985 Edition Chapter 3; Chapter 4 of this edition); --- Selection and modification of measuring indication error (1985 Version 4.1; 5.1 edition); --- Increasing the measurement beam diameter of the wire (1985 Version 4.2; this version 5.2.2); --- Increasing the diameter of the strand re-measurement method (1985 Version 4.2; this version 5.2.3); --- Increasing the measurement method bimetallic wire thickness of the outer layer of metal (1985 Version 4.2; this version 5.2.4). This part is proposed by the China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee Wire and Cable (SAC/TC213) centralized. This section is drafted. Shanghai Electric Cable Research Institute, Wuxi Jiangnan Cable Co., Ltd., Henan Mastery Cable Co., Ltd., Jiang Su Shengan cable Ltd., Kunming Cable Co., Ltd., Baosheng Science and Technology Innovation Co., Ltd. Shanghai Yalong Industry Co., Ltd., Hunan Xiang can Electrical Co., Ltd. and Shenzhen, China Cable Co., Ltd. Drafters of this section. Lu Sheng Ye Xing Hai Yong, Zhang Chuan Province, Shiwan Fu, Sun Ping, HE Wen Jun, Zhang Hui Jiang, Li Bin, Wu Xue-yu, Zhang Peng. This part of the standard replaces the previous editions are. --- GB/T 4909.2-1985. Test methods for bare wires Part 2. Measure

1 Scope

GB/T 4909 provisions of this part of the bare wire size measurement test measurement tools, sample preparation, measurement procedures, test results and commentary Set and so on. This section applies to the measurement of various circular, rectangular, shaped conductors and stranded conductors dimensions, radius, diameter ratio and cross-sectional section Product and so on. When external dimensions measuring accuracy have higher requirements to the appropriate product standards prevail. This section should be used in conjunction with the GB/T 4909.1-2009.

2 Normative references

The following documents contain provisions which, through reference to GB/T 4909 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 1216-2004 outside micrometer (DIN683-1999, MOD) GB/T 3048.2-2007 electrical wire and cable performance test methods - Part 2 metal resistivity test (IEC 60498. 1974, MOD) GB/T 4909.1-2009 Test methods for bare wires - Part 1. General GB/T 8061-2004 lever micrometer GB/T 21389-2008 cursor, with table and several Caliper JB/T 8788-1998 feeler

3 Measuring Tools

3.1 micrometer Micrometer diameter should be consistent with GB/T 1216-2004 provides leverage micrometer shall conform to GB/T 8061-2004 requirements. For 0.1mm below the specimen, measuring micrometer should be 0.1N ~ 1.0N, probe diameter should be 2mm ~ 8mm. for 0.1mm and above the specimen, measuring micrometer should 1N ~ 3N, probe diameter should be 5mm ~ 8mm. Allows the use of other suitable measuring tool. 3.2 vernier caliper Vernier caliper should be consistent with GB/T 21389-2008 requirements. 3.3 steel skin ruler 300mm and 1000mm two specifications. 3.4 projector or magnifying glass Magnification of 10 times to 20 times. 3.5 Special model Standard model or template limit.

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