GB/T 4909.7-2009 English PDF

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GB/T 4909.7-2009: Test methods for bare wires -- Part 7: Mandrel winding test
Status: Valid

GB/T 4909.7: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4909.7-2009	149	Add to Cart	2 days	Test methods for bare wires -- Part 7: Mandrel winding test	Valid
GB/T 4909.7-1985	199	Add to Cart	2 days	Test methods for bare wires--Mandrel winding test	Obsolete

Similar standards

GB/T 4910   GB/T 5585.1   GB/T 5585.2   GB/T 4909.1   GB/T 4909.12   GB/T 4909.11   

Basic data

Standard ID: GB/T 4909.7-2009 (GB/T4909.7-2009)
Description (Translated English): Test methods for bare wires -- Part 7: Mandrel winding test
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K11
Classification of International Standard: 29.060.10
Word Count Estimation: 5,511
Date of Issue: 2009-03-19
Date of Implementation: 2009-12-01
Older Standard (superseded by this standard): GB/T 4909.7-1985
Quoted Standard: GB/T 4909-2009
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 winding test equipment, specimen preparation, measurement procedures, test results and evaluation and so on. This section applies to the determination of nominal diameter d is 0. 3mm ~ 10. 0mm copper, aluminum and its alloys, bi-metal conductor lines and characteristics of circular cross-section dimensions a �� 20. 0mm profiled cross-section conductors (such as contact lines, etc.) winding performance. This test method is the test piece around the winding mandrel diameter required number of turns required to observe the surface changes. Winding the winding mode can be repeated or the time of winding. This part should GB/T 4909. 1-2009 together.

GB/T 4909.7-2009: Test methods for bare wires -- Part 7: Mandrel winding test

---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 7. Mandrel winding test ICS 29.060.10 K11 National Standards of People's Republic of China Replacing GB/T 4909.7-1985 Test methods for bare wires Part 7. winding test 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 74909 Part of. This Part replaces GB/T 4909.7-1985 "Test methods for bare wires winding test." Section compared with the GB/T 4909.7-1985 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; --- Expanding the scope of application (1985 Edition Chapter 1; Chapter 1 of this edition); --- Added "Normative References" chapter (1985 edition no; Chapter 2 of this edition). 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, Shanghai Yalong Industry Co., Ltd. Hunan to electrical, Shenzhen Shenzhou Cable Co., Ltd., Wuxi Jiangnan Cable Co., Ltd., Henan Mastery Cable Co., Ltd., Jiang Su Shengan Cable Co., Ltd., Kunming Power Ltd. and cable Baosheng Science and Technology Innovation Co., Ltd. Drafters of this section. Lu Sheng Ye, Xing Hai Yong, Li Bin, Wu Xue-yu, Zhang Peng, Zhang Chuan Province, Shiwan Fu, Sun Ping, HE Wen Jun, Zhang Hui Jiang. This part of the standard replaces the previous editions are. --- GB/T 4909.7-1985. Test methods for bare wires Part 7. winding test

1 Scope

GB/T 4909 provisions of this part of the test equipment of bare wire winding test, specimen preparation, measurement procedures, test results and commentary Set and so on. Profiled conductor feature size Rao ≤20.0mm (such as contact line, etc.) of the winding performance. This test method is to test bar specimens wound around a predetermined number of turns in diameter, observed changes in their surface. Can be re-winding type Complex wound or a wound. 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 4909.1-2009 Test methods for bare wires - Part 1. General

3 Test Equipment

Wrapping test apparatus as shown in Figure 1. The test bar should have sufficient rigidity, surface finish. 1 --- jig; 2 --- specimen; 3 --- test bars; 4 --- guides; 5 --- test rod holder; F --- tension. Figure 1 Schematic winding test device ......

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