GB/T 28026.3-2018Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 3: Mutual interaction of a.c. and d.c. traction systems (English PDF)
轨道交通 地面装置 电气安全、接地和回流 第3部分：交流和直流牵引供电系统的相互作用
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
December 28, 2018
Implementation date
July 1, 2019
Scope
GB/T 28026.3-2018 is the English-translated version of 轨道交通 地面装置 电气安全、接地和回流 第3部分：交流和直流牵引供电系统的相互作用.
GB/T 28026.3-2018 is the Chinese standard "Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 3: Mutual interaction of a.c. and d.c. traction systems".
Its scope clause reads: Due to the interaction between the AC and DC electric traction power supply system, dangerous induced voltage and current may cause injury to the human body and equipment. harm.
This part of GB/T 28026 gives the electrical safety and protective measures for the ground unit of AC/DC electric traction power supply system. Claim. This section applies to the electrical safety requirements of the ground unit maintenance work of the electric traction power supply system.
Interactions include the following. --- Parallel operation of AC and DC electric traction power supply systems; --- Cross operation of AC and DC electric traction power supply systems; ---Shared tracks, buildings or other structures; --- Transition section between AC and DC electric traction power supply systems.
This section is limited to the voltage and current of the fundamental frequency and its superimposed part. The regulations on radiated interference are not covered.
This section applies to all new lines, extension lines and existing electric traction power supply systems, including. ---railway; ---guided public transport systems, such as. trams, elevated and underground railways, mountain railways, trolleybus systems and installations Contact system or contact rail magnetic levitation system; --- Material transportation system.
This section does not apply to. --- Underground mine traction power supply system; --- Cranes, rail transport platforms and similar transport equipment, temporary buildings (eg exhibition structure), because such facilities are currently not available The precedent for powering the net, they are not affected by the traction power supply system; --- Suspension cable car; --- Funicular railway; ---Maintenance works.
The provisions in this section also apply to hazardous voltage or current generated by AC or DC electric traction power supply systems to non-electric traction lines. Road interaction.
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Document preview — GB/T 28026.3-2018
National Standard of the People's Republic of China
- ICS
- 45.060
- Classification
- S 80
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Dangers and adverse effects
- 5 type of interaction
- 6 interacting area
- 7 Contact voltage limit for composite AC and DC voltages
- 8 Technical requirements and measures within the interaction area
- Appendix A (informative) Interacting area
- Appendix B (informative) Analysis and assessment of interactions
- Appendix C (informative) Composite voltage analysis
1 Scope
Due to the interaction between the AC and DC electric traction power supply system, dangerous induced voltage and current may cause injury to the human body and equipment.
harm. This part of GB/T 28026 gives the electrical safety and protective measures for the ground unit of AC/DC electric traction power supply system.
Claim.
This section applies to the electrical safety requirements of the ground unit maintenance work of the electric traction power supply system.
Interactions include the following.
--- Parallel operation of AC and DC electric traction power supply systems;
--- Cross operation of AC and DC electric traction power supply systems;
---Shared tracks, buildings or other structures;
--- Transition section between AC and DC electric traction power supply systems.
This section is limited to the voltage and current of the fundamental frequency and its superimposed part. The regulations on radiated interference are not covered.
This section applies to all new lines, extension lines and existing electric traction power supply systems, including.
---railway;
---guided public transport systems, such as. trams, elevated and underground railways, mountain railways, trolleybus systems and installations
Contact system or contact rail magnetic levitation system;
--- Material transportation system.
This section does not apply to.
--- Underground mine traction power supply system;
--- Cranes, rail transport platforms and similar transport equipment, temporary buildings (eg exhibition structure), because such facilities are currently not available
The precedent for powering the net, they are not affected by the traction power supply system;
--- Suspension cable car;
--- Funicular railway;
---Maintenance works.
The provisions in this section also apply to hazardous voltage or current generated by AC or DC electric traction power supply systems to non-electric traction lines.
Road interaction.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 28026.1-2018 Electrical safety, grounding and recirculation of rail transit ground units - Part 1 (IEC 62128-1.2013, MOD)
GB/T 28026.2-2018 Electrical safety, grounding and recirculation of rail transit ground units - Part 2. DC traction supply
System stray current protection measures (IEC 62128-2.2013, MOD)
TB/T 2809 | TB/T 3111 | GB/T 10411 | GB/T 42148 | GB/T 28026.2 | […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 44 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 28026.1-2018Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 1: Protective provisions against electric shock
- GB/T 28026.2-2018Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 2: Provisions against the effects of stray currents caused by d.c. traction systems
IEC 62128
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Related Standards
GB/T 28026.1-2018 — Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 1: Protective provisions against electric shock
GB/T 28026.2-2018 — Railway applications -- Fixed installations -- Electrical safety, earthing and the return circuit -- Part 2: Provisions against the effects of stray currents caused by d.c. traction systems
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