GB/T 12971.2-2008Trolley and contact wires for electric traction -- Part 2: Aluminium and steel composite trolley and contact wires (English PDF)

Foreword

GB/T 12971 Trolley and Contact Wires for Electric Traction can be divided into the

following two parts.

--- Part 1.Copper and Copper-Alloy Contact Wires;

--- Part 2.Aluminum and Steel Composite Trolley and Contact Wires.

This Part belongs to Part 2 of GB/T 12971.

This Part replaced GB 12971.3-1991 Trolley and Contact Wires for Electric Traction –

Part 3.Aluminum and Steel Composite Trolley and Contact Wires; and enroll relevant

contents of GB 12971.1-1991 into this Part.

Compared with GB 12971.3-1991, this Part has the major changes as follows.

--- Add the normative references (Clause 2 of this edition);

--- Modify the test requirements (Clause 4 of previous edition; Clause 6 of this

edition);

--- Add the requirements for package and marking (Clause 7 of this edition);

--- Add the requirements for transportation and storage (Clause 8 of this edition);

The Appendix A, B, C in this Part are normative.

This Part was proposed by China Electrical Equipment Industrial Association.

This Part shall be under the jurisdiction of National Technical Committee for

Standardization of Wires and Cables (SAC/TC 213).

Drafting organizations of this Part. Shanghai Electric Cable Research Institute.

Participating drafting organizations of this Part. Tai'an Electric Trolley Wire Factory,

Tai'an Huaxun Electric Trolley Wire Co., Ltd., Hebei Xingtai Cable Co., Ltd., Shanghai

Cable Works Co., Ltd., and Liaoning Fushi Copper Co., Ltd.

Chief drafting staffs of this Part. Liu Bin, Duan Pengzheng, Zhang Xiuqin, Meng

Guangji, Xie Qilin, and Wang Daxin.

The historical editions replaced by this Standard are as follows.

--- GB 12971.1-1991;

--- GB 12971.3-1991.

Trolley and Contact Wires for Electric Traction - Part 2.

Aluminum and Steel Composite Trolley and Contact Wires

1 Scope

This Part of GB/T 12971 specifies the product models, specifications, materials, test,

package and marking, transportation and storage, etc. of aluminum and steel

composite trolley and contact wires.

This Part is applicable to the aluminum and steel composite trolley and contact wires

used for electric transport, lifting system in the railways, mining, urban traffic, etc.

2 Normative References

The provisions in following documents become the provisions of this Standard through

reference in this Part of GB/T 12971.For dated references, the subsequent

amendments (excluding corrigendum) or revisions do not apply to this Standard,

however, parties who reach an agreement based on this Standard are encouraged to

study if the latest versions of these documents are applicable. For undated references,

the latest edition of the referenced document applies.

GB/T 1196-2002 Unalloyed Aluminum Ingots for Re-melting

GB/T 3048.2-2007 Test Methods for Electrical Properties of Electric Cables and

Wires - Part 2.Test of Electrical Resistivity of Metallic Materials (IEC 60648.1974,

MOD)

GB/T 4909.2-1985 Test Methods for Bare Wires – Part 2.Measurement of

Dimensions

GB/T 4909.3-1985 Test Methods for Bare Wires – Part 3.Tensile Test

GB/T 4909.4-1985 Test Methods for Bare Wires – Part 4.Torsion Test

JB/T 8137.2-1999 Delivery Drums for Electric Wires and Cables - Part 2.Wood

Delivery Drums

JB/T 8137.4-1999 Delivery Drums for Electric Wires and Cables - Part 4.Steel

Shapes Composite Delivery Drums

5 Materials

The materials of aluminum and steel composite contact wires shall conform to the

following provisions.

Steel shall conform to the provisions of Appendix A in this Part.

Aluminum shall conform to the provisions of Appendix B in this Part.

6 Test

8 Storage and Transportation