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GB/T 28026.2-2018 English PDF

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Q: Should I purchase the latest version GB/T 28026.2-2018?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 28026.2-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$519.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
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
Status: Valid

GB/T 28026.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28026.2-2018	519	Add to Cart	5 days	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	Valid
GB/T 28026.2-2011	839	Add to Cart	5 days	Railway applications -- Fixed installations -- Part 2: Protective provisions against the effects of stray currents caused by d.c. traction supply system	Obsolete

Similar standards

TB/T 3111 GB/T 42148 GB/T 28026.3 GB/T 28026.1

Basic data

Standard ID: GB/T 28026.2-2018 (GB/T28026.2-2018)
Description (Translated English): 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
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: S80
Classification of International Standard: 45.060
Word Count Estimation: 26,268
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Older Standard (superseded by this standard): GB/T 28026.2-2011
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Railway applications--Fixed installations--Electrical safety,earthing and the return circuit--Part 2. Provisions against the effects of stray currents caused by dctraction systems ICS 45.060 S80 National Standards of People's Republic of China Replace GB/T 28026.2-2011 Rail transit ground device electrical safety, Grounding and reflow Part 2. DC traction Protective measures for stray current in power supply systems earthingandthereturncircuit-Part 2. Provisionsagainstthe (IEC 62128-2.2013, MOD) 2018-12-28 released.2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Identification of hazards and risks 1 5 Stray current evaluation and acceptance criteria 2 6 Design Regulations 4 7 Requirements for affected structures 6 8 Protection methods for metal structures 7 9 garage and workshop 8 10 Test and Measurement 8 Appendix A (informative) Stray current and its impact on metal structure 10 Appendix B (informative) Line characteristics measurement 12 Appendix C (informative) Stray current evaluation through rail potential evaluation rail insulation 19 Reference 21

Foreword

GB/T 28026 "Electrical safety, grounding and reflow of rail transit ground devices" is divided into three parts. --- Part 1. Electric shock protection measures; ---Part 2. Protective measures for stray currents in DC traction power supply systems; --- Part 3. Interaction of AC and DC traction power systems. This part is the second part of GB/T 28026. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 28026.2-2011 "railway ground equipment - Part 2. Straight current system stray current protection Measures, compared with GB/T 28026.2-2011, the main technical changes are as follows. --- Added normative references GB/T 1402 and GB/T 28026.3-2018 (see Chapter 2); ---Modified terms and definitions, directly defined to reference GB/T 28026.1-2018 (see Chapter 3, Chapter 3 of the.2011 edition); --- Modified the range affected by stray currents (see Chapter 4, 4.3 of the.2011 edition); --- Modified important parameters affecting the magnitude of stray current (see 5.1, 5.1 of the.2011 edition); --- Revised the limit on the average value of the structure to ground potential during the peak period of transportation for metal reinforced concrete or metal structures, 100mV increased to.200mV (see 5.3,.2011 version 7.2.3); --- Revised the general requirements for the recirculation system (see 6.2.1,.2011 version 6.1); ---Modified the regulation of the track resistance and measures to reduce the longitudinal resistance of the rail (see 6.2.2, 6.1.2 of the.2011 edition); --- Modified the requirements for return conductors (see 6.2.4, 5.5 of the.2011 edition); --- Revised the relationship requirements for the reflow system and the ground-insulated device (see 6.2.6,.2011 edition of 6.2.1); --- Revised "in the case of closed roadbed, the level of the road should be avoided, the conductivity is significantly higher than the conventional value of the track connection", and changed to “In the case of closed roadbed, the conductivity at the level crossing should not be higher than the adjacent line” (see 6.1, 6.1.1.2 of the.2011 edition); --- Revised the requirements for the insulation level of the track (see 6.7, 5.3 of the.2011 edition); --- Revised the title of the article, "tunnel structure" was changed to "tunnel, bridge, viaduct and reinforced concrete track bed", and is described below Expand the scope of application (see 7.2, 7.2 of the.2011 edition). This section uses the redrafting method to modify the electrical safety, grounding and return of IEC 62128-2.2013 "railway ground devices". Flow Part 2. Protective measures for stray current in DC traction power supply systems. This section is structurally adjusted compared to IEC 62128-2.2013. The appendix is arranged in the order mentioned in the article. Appendix A is adjusted to Appendix B, Appendix B is adjusted to Appendix C, and Appendix C is adjusted to Appendix A. There are technical differences in this section compared to IEC 62128-2.2013, and the terms involved in these differences have been passed on the outside margins. The vertical single line (|) of the position is marked. The specific technical differences and their causes are as follows. ---About the normative reference documents, this part has made technical adjustments to adapt to China's technical conditions, adjustments The situation is reflected in Chapter 2, “Regulatory Citations”, and the specific adjustments are as follows. ● Replace IEC 60850 with GB/T 1402 modified to international standards (see 6.2.6); ● Replace IEC 62128-1 with GB/T 28026.1-2018 modified to international standards (see Chapters 4, 6.2.1, 6.2.6, 6.5, 6.7, 7.2.3, 7.2.5, 7.4, Chapter 9); ● Replace IEC 62128-3 with GB/T 28026.3-2018 with international standards (see 6.4). --- Modified the note as the text, as the note contains requirements (see 7.2.5). This section has the following editorial changes compared to IEC 62128-2.2013. --- Removed Note 1 (see 5.3); --- Removed the note for the example (see Chapter 8); --- Revised Table 1 of the reference EN50162.2004 to list Table A.1 directly in the text (see A.2); --- Added the number of the formula in the appendix to facilitate the reference of the formula (see Appendix A, Appendix B). Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This part is proposed by the National Railway Administration. This part is under the jurisdiction of the National Traction Electrical Equipment and Systems Standardization Technical Committee (SAC/TC278). This section drafted by. China Railway Electrification Survey and Design Institute Co., Ltd., China Railway Fourth Survey and Design Institute Group Co., Ltd., China Railway First Survey and Design Institute Group Co., Ltd., China Railway Design Group Co., Ltd., China Railway Fifth Survey and Design Institute Group Co., Ltd., China Electric Power Research Institute. The main drafters of this section. Yang Jianxing, Chen Min, Li Lipeng, Wu Jiangtao, Yan Xiufang, Jiao Yu, Zhu Wanfang, Zheng Lijun, Yang Xiaozhong, Shen Haibin. The previous versions of the standards replaced by this section are. ---GB/T 28026.2-2011. Rail transit ground device electrical safety, Grounding and reflow Part 2. DC traction Protective measures for stray current in power supply systems

1 Scope

This part of GB/T 28026 gives the requirements for stray current protection in DC traction power supply systems. This section applies to all metallic fixtures inside the traction power supply system, and also applies to other rail traffic buried in the ground. A metal part through which an electric current flows. This section applies to all new DC power supply lines, as well as to existing electrified lines that need to consider the effects of stray currents. Renovation of roads and existing lines. Its scope of application includes. ---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. This section does not stipulate maintenance procedures.

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 1402 rail transit traction power supply system voltage (GB/T 1402-2010, IEC 60850.2007, MOD) GB/T 28026.1-2018 Electrical safety, grounding and recirculation of rail transit ground units - Part 1 (IEC 62128-1.2013, MOD) GB/T 28026.3-2018 Electrical safety, grounding and recirculation of rail transit ground units - Part 3. AC and DC Interaction of lead-in power supply systems (IEC 62128-3.2013, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 28026.1-2018 apply to this document.

4 Identification of hazards and risks

When the reflow system is not completely insulated from the ground, the DC traction power supply system can generate stray currents and relate to the internal and external rail transit. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 28026.2-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 28026.2-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 28026.2-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 28026.2-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 28026.2-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 28026.2-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.