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

裸电线试验方法第7部分：卷绕试验

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 19, 2009

Implementation date

December 1, 2009

Scope

GB/T 4909.7-2009 is the English-translated version of 裸电线试验方法第7部分：卷绕试验.

GB/T 4909.7-2009 is the Chinese standard "Test methods for bare wires - Part 7: Mandrel winding test". Its scope clause reads: 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. Its clauses include test equipment.

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Document preview — GB/T 4909.7-2009

National Standard of the People's Republic of China

ICS: 29.060.10
Classification: K 11
Replacing: GB/T 4909.7-1985

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions

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 […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

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Editions of GB/T 4909.7

Edition	Title	Revision	Status
GB/T 4909.7-2009	Test methods for bare wires - Part 7: Mandrel winding test	current edition	Current
GB/T 4909.7-1985	Test methods for bare wires - Part 7: Mandrel winding test	previous edition	Superseded

This page sells the current edition, GB/T 4909.7-2009. Earlier editions are listed for reference only.

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