GB/T 10411-2025 DC electric traction systems of urban rail transit English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 10411-2025
Replaces GB/T 12236-2005
DC electric traction systems of urban rail transit
城市轨道交通直流牵引供电系统
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Power Supply Method and External Power Sources
5.1 Power Supply Method
5.2 External Power Sources
6 Traction Substation
6.1 Distribution of Traction Substations
6.2 Capacity of Traction Substation Equipment
6.3 Wiring Scheme of Traction Substation
6.4 Technical Index of Traction Power Supply
6.5 Equipment Selection
6.6 Relay Protection Devices of Traction Substation
7 Cables
8 Contact Line System
8.1 General
8.3 Contact Rail
8.4 Overhead Contact Line
9 Return Current, System Grounding and Overvoltage Protection
9.1 Return Current
9.2 System Grounding
9.3 Overvoltage Protection
10 Power Monitoring System
10.1 System Dispatching
10.2 Dispatching Communication
10.3 Monitoring Equipment
Appendix A (Normative) Traction Rectifier Transformer
Appendix B (Normative) Traction Rectifier
Appendix C (Normative) Regenerative Braking Energy Feedback Device
Appendix D (Normative) Bidirectional Converter Assembly
Appendix E (Normative) DC Circuit Breaker
References
1 Scope
This document specifies the overall requirements, power supply methods, external power sources, traction substations, cables, contact lines, return current systems, system grounding and overvoltage protection, and main performance indicators and equipment operational characteristics of the power monitoring system for urban rail transit DC traction power supply systems (hereinafter referred to as the "system").
This document applies to urban rail transit DC traction power supply systems.
2 Normative References
The contents of the following documents constitute essential provisions of this document through normative references herein. For referenced documents that specify a date, only the version corresponding to that date applies to this document; for referenced documents
without a specified date, their latest version (including all amendments) applies.
GB/T 2900.36 Electrotechnical Terminology – Electric Traction
GB/T 14549 Power Quality – Harmonics in Public Supply Networks
GB/T(Z) 17626 (All Parts) Electromagnetic Compatibility – Testing and Measurement Techniques
GB 17799 (All Parts) Electromagnetic Compatibility – Generic Standards
GB/T 24338 (All Parts) Rail Transit – Electromagnetic Compatibility
GB/T 25890 (All Parts) Rail Transit – Fixed Installations – DC Switchgear
GB/T 28026.2 Rail Transit – Fixed Installations – Electrical Safety, Earthing and Return Current – Part 2: Protective Measures Against Stray Currents in DC Traction Power Supply Systems
GB/T 36572 Guidelines for Cybersecurity Protection of Electric Power Supervisory Control Systems
GB/T 50062 Design Code for Relay Protection and Automatic Devices of Electrical Installations
GB/T 50064 Design Code for Overvoltage Protection and Insulation Coordination of AC Electrical Installations
GB/T 50065 Design Code for Earthing of AC Electrical Installations
GB 50157 Metro Design Code
GB 55033 Urban Rail Transit Engineering Project Code
CJJ/T 49 Technical Standard for Corrosion Protection Against Stray Currents in Metro Systems
JB/T 10693 Dry-Type Traction Rectifier Transformers for Urban Rail Transit
3 Terms and Definitions
The terms and definitions defined in GB/T 2900.36 and the following apply to this document.
3.1 Nominal Voltage
Un
The voltage selected for system design.
Note: In this document, the term “system” refers to a combination of conductors (lines) and equipment operating at a common nominal voltage.
[Source: GB/T 1402—2010, 3.3]
3.2 Highest Non-Permanent Voltage
Umax2
The maximum voltage value that may occur temporarily.
[Source: GB/T 1402—2010, 3.5]
3.3 Contact Line System
A conductor network that supplies electric power to electric trains via current collectors.
3.4 Feeder
A supply line that delivers current from the traction substation to the contact line system.
3.5 Centralized Power Supply Mode
An external power supply method where the main substations of this line or other lines supply power to the traction substations and step-down substations of this line.
[Source: GB 50157—2013, 2.0.30]
3.6 Distributed Power Supply Mode
An external power supply method where medium-voltage power sources distributed along the route separately supply power to the traction substations and step-down substations.
[Source: GB 50157—2013, 2.0.31]
3.7 Combined Power Supply Mode
An external power supply method where both the main substation and medium-voltage city power sources supply power to the traction substations and step-down substations.
[Source: GB 50157—2013, 2.0.32]
3.8 Regenerative Braking Energy Feedback Device
A device that feeds excess braking energy generated during train braking back into the AC power grid.
[Source: GB/T 36287—2018, 3.1, modified]
3.9 Bidirectional Converter Assembly
A device composed of a converter transformer unit, bidirectional converter unit, and accessories, used to realize the conversion between AC and DC electrical energy.
4 General Requirements
4.1 The nominal voltage of the system shall be either DC750V or DC1500V.
4.2 The system shall be safe, suitable for use, technologically advanced, and economically reasonable, while focusing on energy conservation, environmental protection, and sustainability. It is recommended to promote digitalization and intelligence.
4.3 The design, installation, construction, and acceptance of the system shall comply with relevant national or industry standards.
5 Power Supply Method and External Power Sources
5.1 Power Supply Methods
5.1.1 There are three types of external power supply methods for urban rail transit: centralized power supply, distributed power supply, and combined power supply.
5.1.2 The traction power supply network should preferably share the same power supply network with the power and lighting supply network.
5.1.3 The traction power load for medium-capacity and above urban rail transit lines should be classified as a first-level load. The receiving voltage of traction substations includes 35 kV, 20 kV, and 10 kV.
5.1.4 The nominal voltage of the system and its fluctuation range shall conform to the specifications in Table 1.
Table 1 Nominal System Voltage and Its Fluctuation Range
Standard
GB/T 10411-2025 DC electric traction systems of urban rail transit (English Version)
Standard No.
GB/T 10411-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
12500 words
Price(USD)
375.0
Implemented on
2026-5-1
Delivery
via email in 1~5 business day
Detail of GB/T 10411-2025
Standard No.
GB/T 10411-2025
English Name
DC electric traction systems of urban rail transit
GB/T 10411-2025 DC electric traction systems of urban rail transit English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 10411-2025
Replaces GB/T 12236-2005
DC electric traction systems of urban rail transit
城市轨道交通直流牵引供电系统
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Power Supply Method and External Power Sources
5.1 Power Supply Method
5.2 External Power Sources
6 Traction Substation
6.1 Distribution of Traction Substations
6.2 Capacity of Traction Substation Equipment
6.3 Wiring Scheme of Traction Substation
6.4 Technical Index of Traction Power Supply
6.5 Equipment Selection
6.6 Relay Protection Devices of Traction Substation
7 Cables
8 Contact Line System
8.1 General
8.3 Contact Rail
8.4 Overhead Contact Line
9 Return Current, System Grounding and Overvoltage Protection
9.1 Return Current
9.2 System Grounding
9.3 Overvoltage Protection
10 Power Monitoring System
10.1 System Dispatching
10.2 Dispatching Communication
10.3 Monitoring Equipment
Appendix A (Normative) Traction Rectifier Transformer
Appendix B (Normative) Traction Rectifier
Appendix C (Normative) Regenerative Braking Energy Feedback Device
Appendix D (Normative) Bidirectional Converter Assembly
Appendix E (Normative) DC Circuit Breaker
References
1 Scope
This document specifies the overall requirements, power supply methods, external power sources, traction substations, cables, contact lines, return current systems, system grounding and overvoltage protection, and main performance indicators and equipment operational characteristics of the power monitoring system for urban rail transit DC traction power supply systems (hereinafter referred to as the "system").
This document applies to urban rail transit DC traction power supply systems.
2 Normative References
The contents of the following documents constitute essential provisions of this document through normative references herein. For referenced documents that specify a date, only the version corresponding to that date applies to this document; for referenced documents
without a specified date, their latest version (including all amendments) applies.
GB/T 2900.36 Electrotechnical Terminology – Electric Traction
GB/T 14549 Power Quality – Harmonics in Public Supply Networks
GB/T(Z) 17626 (All Parts) Electromagnetic Compatibility – Testing and Measurement Techniques
GB 17799 (All Parts) Electromagnetic Compatibility – Generic Standards
GB/T 24338 (All Parts) Rail Transit – Electromagnetic Compatibility
GB/T 25890 (All Parts) Rail Transit – Fixed Installations – DC Switchgear
GB/T 28026.2 Rail Transit – Fixed Installations – Electrical Safety, Earthing and Return Current – Part 2: Protective Measures Against Stray Currents in DC Traction Power Supply Systems
GB/T 36572 Guidelines for Cybersecurity Protection of Electric Power Supervisory Control Systems
GB/T 50062 Design Code for Relay Protection and Automatic Devices of Electrical Installations
GB/T 50064 Design Code for Overvoltage Protection and Insulation Coordination of AC Electrical Installations
GB/T 50065 Design Code for Earthing of AC Electrical Installations
GB 50157 Metro Design Code
GB 55033 Urban Rail Transit Engineering Project Code
CJJ/T 49 Technical Standard for Corrosion Protection Against Stray Currents in Metro Systems
JB/T 10693 Dry-Type Traction Rectifier Transformers for Urban Rail Transit
3 Terms and Definitions
The terms and definitions defined in GB/T 2900.36 and the following apply to this document.
3.1 Nominal Voltage
Un
The voltage selected for system design.
Note: In this document, the term “system” refers to a combination of conductors (lines) and equipment operating at a common nominal voltage.
[Source: GB/T 1402—2010, 3.3]
3.2 Highest Non-Permanent Voltage
Umax2
The maximum voltage value that may occur temporarily.
[Source: GB/T 1402—2010, 3.5]
3.3 Contact Line System
A conductor network that supplies electric power to electric trains via current collectors.
3.4 Feeder
A supply line that delivers current from the traction substation to the contact line system.
3.5 Centralized Power Supply Mode
An external power supply method where the main substations of this line or other lines supply power to the traction substations and step-down substations of this line.
[Source: GB 50157—2013, 2.0.30]
3.6 Distributed Power Supply Mode
An external power supply method where medium-voltage power sources distributed along the route separately supply power to the traction substations and step-down substations.
[Source: GB 50157—2013, 2.0.31]
3.7 Combined Power Supply Mode
An external power supply method where both the main substation and medium-voltage city power sources supply power to the traction substations and step-down substations.
[Source: GB 50157—2013, 2.0.32]
3.8 Regenerative Braking Energy Feedback Device
A device that feeds excess braking energy generated during train braking back into the AC power grid.
[Source: GB/T 36287—2018, 3.1, modified]
3.9 Bidirectional Converter Assembly
A device composed of a converter transformer unit, bidirectional converter unit, and accessories, used to realize the conversion between AC and DC electrical energy.
4 General Requirements
4.1 The nominal voltage of the system shall be either DC750V or DC1500V.
4.2 The system shall be safe, suitable for use, technologically advanced, and economically reasonable, while focusing on energy conservation, environmental protection, and sustainability. It is recommended to promote digitalization and intelligence.
4.3 The design, installation, construction, and acceptance of the system shall comply with relevant national or industry standards.
5 Power Supply Method and External Power Sources
5.1 Power Supply Methods
5.1.1 There are three types of external power supply methods for urban rail transit: centralized power supply, distributed power supply, and combined power supply.
5.1.2 The traction power supply network should preferably share the same power supply network with the power and lighting supply network.
5.1.3 The traction power load for medium-capacity and above urban rail transit lines should be classified as a first-level load. The receiving voltage of traction substations includes 35 kV, 20 kV, and 10 kV.
5.1.4 The nominal voltage of the system and its fluctuation range shall conform to the specifications in Table 1.
Table 1 Nominal System Voltage and Its Fluctuation Range
