GB/T 12971.2-2023Trolley and contact wires for electric traction - Part 2: Aluminium and steel composite contact wires (English PDF)
电力牵引用接触线 第2部分：钢铝复合接触线
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Issued by
State Administration for Market Regulation; Standardization Administration of China
Level / Type
National · Recommended
Issue date
August 6, 2023
Implementation date
March 1, 2024
Scope
GB/T 12971.2-2023 is the English-translated version of 电力牵引用接触线 第2部分：钢铝复合接触线.
GB/T 12971.2-2023 is the Chinese national standard on trolley and contact wires for electric traction - part 2: aluminium and steel composite contact wires, in the field of electrical engineering.
The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up — which in practice is how most foreign buyers meet it.
It was issued on 6 August 2023 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 March 2024.
Classification: ICS 29.060.10, CCS K11. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there.
The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.
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Document preview — GB/T 12971.2-2023
National Standard of the People's Republic of China
- ICS
- 29.060.10
- Classification
- K11
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Model, specifications and designation method
- 5 Technical requirements
- 6 Test methods
- 7 Acceptance rules
- 8 Packaging and marking
- 9 Storage and transport
- Annex A (informative) Calculated wear values of the steel-aluminium composite contact wire
- Annex B (normative) Technical requirements for the steel section semi-finished product
- Annex C (normative) Technical requirements for the aluminium semi-finished product
- Annex D (normative) Test method for the bonding force of the steel-aluminium composite contact wire
- References
3 Terms and definitions
4 Model, specifications and designation method
5 Technical requirements
6 Test methods
7 Acceptance rules
8 Packaging and marking
9 Storage and transport
Foreword
This document was issued on 6 August 2023 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and has been in force since 1 March 2024.
It replaces GB/T 12971.2-2008.
Classification: ICS 29.060.10, CCS K11.
About this edition
GB/T 12971.2-2023 is the current edition. It was issued on 6 August 2023 and has been in force since 1 March 2024, replacing GB/T 12971.2-2008.
GB/T 12971.2-2008 has been superseded: a specification that still cites it is citing a withdrawn edition.
The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.
Classification and status
GB/T 12971.2-2023 is classified under ICS 29.060.10, in the field of electrical engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.
Its Chinese Standard Classification code is CCS K11. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.
The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 13 pages — is available in the English PDF.
Similar standards
Editions of GB/T 12971.2
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 12971.2-2023 | Trolley and contact wires for electric traction - Part 2: Aluminium and steel composite contact wires | current edition | Current |
| GB/T 12971.2-2008 | Trolley and contact wires for electric traction - Part 2: Aluminium and steel composite trolley and contact wires | previous edition | Superseded |
This page sells the current edition, GB/T 12971.2-2023. Earlier editions are listed for reference only.
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Related Standards
GB/T 12971.1-2023 — Trolley and contact wires for electric traction - Part 1: Copper and copper-alloy contact wires
GB/T 12971.2-2008 — Trolley and contact wires for electric traction -- Part 2: Aluminium and steel composite trolley and contact wires
GB/T 7251.4-2026 — Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)
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