GB/T 40425.2-2025Overhead contact charging system for electric buses — Part 2: Charging connection set (English PDF)
电动客车顶部接触式充电系统 第2部分:充电连接装置
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 25, 2025
Implementation date
November 1, 2025
Scope
GB/T 40425.2-2025 is the English-translated version of 电动客车顶部接触式充电系统 第2部分:充电连接装置.
GB/T 40425.2-2025 is the Chinese national standard covering the pantograph and contact bars that charge a bus from above at up to 1500 volts and 1500 amps — the ratings, the requirements for the charging pantograph, bus bars and cable, the contact dimensions that let a vehicle from one maker meet a station from another, the installation dimensions and the inclination of the power bar, the insulation, flammability and environmental tests, and the marking.
Part 2 of the series, with the general requirements part GB/T 40425.1-2021. First edition, under the Ministry of Industry and Information Technology. In force from 1 November 2025. Issued on 25 April 2025, it has been in force since 1 November 2025.
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Document preview — GB/T 40425.2-2025
National Standard of the People's Republic of China
- ICS
- 43.040.99
- Classification
- T 35
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceIII
- IntroductionIV
- 1 Scope1
- 2 Normative references1
- 3 Terms and Definitions1
- 4 Symbols2
- 5 Rating2
- 6 Technical Requirements3
- 7 Size5
- 8 Test methods5
- 9 Logo7
- Appendix A (Normative) Pantograph and receiving bar contact dimensions8
- Appendix B (Informative) Installation Dimensions9
- Appendix C (Informative) Inclination Angle of the Power Bar11
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.
This document is part 2 of GB/T 40425 "Top contact charging system for electric buses". GB/T 40425 has published the following part.
— Part 1: General requirements;
— Part 2: Charging connection device.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee on Automotive Standardization (SAC/TC114).
This document was drafted by: BYD Auto Industry Co., Ltd., Shanghai Aowei Technology Development Co., Ltd., Anhui Ankai Automobile Co., Ltd.
Company, China Automotive Research Institute Automobile Inspection Center (Tianjin) Co., Ltd., Yutong Bus Co., Ltd., China Automotive Technology and Research Center Co., Ltd., SAIC Commercial Vehicle Technology Center, Zhengzhou Shanxiang New Energy Technology Co., Ltd., and Beijing Weitongli Electric Co., Ltd.
The main drafters of this document are: Peng Wang, Miao Xiaoli, Ma Aiguo, Li Zhen, Wang Jiaojiao, Zhang Jin, Zhu Zhengli, Xu Xiao, Xie Lingfeng, Yang Guosen, Jiang Jiefeng, Liu Chao, Liu Wei, Fang Pengwei, Huang Jian, and Liu Yubin.
Introduction
Electric buses have the characteristics of large vehicle mass and large on-board power. They have high platform voltage and large battery capacity.
Electric city buses generally run on fixed routes and can use stations and temporary stations for charging.
Therefore, we can learn from the experience of supercapacitor electric vehicles and adopt the top contact automatic charging method to reduce the manual operation of charging and improve GB/T 40425 "Top contact charging system for electric buses" aims to establish the top contact conductive charging system for electric buses.
The system requirements are to be composed of two parts.
— Part 1: General requirements. The purpose is to establish the overall requirements for the top contact charging system of electric buses and give the charging system Guidance circuit and control principle.
— Part 2: Charging connection device. The purpose is to establish the definition, requirements and test methods of the top contact charging connection device for electric buses.
The test methods are used to guide the design and development of the industry as well as the construction and installation of charging facilities.
Top contact charging system for electric buses Part 2: Charging connection device
1 Scope
This document specifies the ratings, technical requirements, test methods and markings for the top contact charging connection device of electric buses.
This document is applicable to M2 and M3 electric buses with rated voltage not exceeding 1500V, rated current not exceeding 1500A, and complying with Design, development, production and installation of charging connection devices for top contact charging systems with connection method D.
2 Normative references
GB/T 2408
GB/T 2423.1-2008
GB/T 2423.2-2008
GB/T 2423.4-2008
GB/T 11918.1-2014
GB/T 16935.1-2023
GB 18384
GB/T 18487.1-2023
GB/T 19596
GB/T 20234.1
GB/T 21561.2-2018
GB/T 28046.3-2011
GB/T 40425.1-2021
3 Terms and definitions
GB/T 11918.1-2014, GB/T 18487.1-2023, GB/T 19596, GB/T 20234.1 and GB/T 40425.1-2021 The following defined terms and definitions apply to this document.
3.1 Note 2.See Figure 1 for a schematic diagram of the charging connection device
Mechanical and electrical connection components connecting electric buses and electric bus power supply equipment.
Note 1.Includes charging pantograph, charging bus, charging cable, etc.
......
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
Normative references
- GB/T 2408Plastics - Determination of burning characteristics - Horizontal and vertical test
- GB/T 2423.1-2008Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
- GB/T 2423.2-2008Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat
- GB/T 2423.4-2008Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
- GB/T 11918.1-2014Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements
- GB/T 16935.1-2023Insulation coordination for equipment within low-voltage supply systems - Part 1: Principles, requirements and tests
Editions of GB/T 40425.2
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 40425.2-2025 | Overhead contact charging system for electric buses - Part 2: Charging connection set | current edition | Current |
This page sells the current edition, GB/T 40425.2-2025. Earlier editions are listed for reference only.
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Related Standards
GB 18384-2025 — Electric vehicles safety requirements
GB/T 11918.1-2014 — Plugs, socket-outlets and couplers for industrial purposes -- Part 1: General requirements
GB/T 16935.1-2023 — Insulation coordination for equipment within low-voltage supply systems - Part 1: Principles, requirements and tests
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