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GB/T 45308-2025 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45308-2025: Railway applications - Rolling stock - Technical requirements for network time synchronization
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45308-2025	359	Add to Cart	4 days	Railway applications - Rolling stock - Technical requirements for network time synchronization	Valid

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Basic data

Standard ID: GB/T 45308-2025 (GB/T45308-2025)
Description (Translated English): Railway applications - Rolling stock - Technical requirements for network time synchronization
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: S30
Classification of International Standard: 45.060
Word Count Estimation: 18,139
Date of Issue: 2025-02-28
Date of Implementation: 2025-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45308-2025: Railway applications - Rolling stock - Technical requirements for network time synchronization

---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.
GB/T 45308-2025 English version. Railway applications - Rolling stock - Technical requirements for network time synchronization ICS 45.060 CCSS30 National Standard of the People's Republic of China Rail transit locomotives and vehicles Network time synchronization technical requirements Released on 2025-02-28 2025-09-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 2 5 Technical Requirements 3 6 Performance Testing 7 Reference 10

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. 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 is proposed by the National Railway Administration. This document is under the jurisdiction of the National Rail Transit Electrical Equipment and System Standardization Technical Committee (SAC/TC278). This document was drafted by. CRRC Zhuzhou Electric Locomotive Research Institute Co., Ltd., China Railway Certification and Inspection Zhuzhou Traction Electrical Equipment Inspection Station Co., Ltd. Company, China Academy of Railway Sciences Group Co., Ltd. Locomotive and Rolling Stock Research Institute, CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd., CRRC Zhuzhou Electric Locomotive Co., Ltd. and CRRC Tangshan Locomotive and Rolling Stock Co., Ltd. The main drafters of this document are. Liu Haitao, Zhou Xuexun, Shen Hui, Hao Bo, Cai Wanyin, Ye Pengdi, Ma Guodong, Ye Feng, Ji Yun. Rail transit locomotives and vehicles Network time synchronization technical requirements

1 Scope

This document specifies the technical requirements and performance tests for network time synchronization of rail transit locomotives and vehicles. This document applies to rail transit locomotive and vehicle train communication network (TCN) equipment.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 17737.1 Coaxial communication cables Part 1.General specification General principles, definitions and requirements GB/T 24338.4 Rail transit electromagnetic compatibility Part 3-2.Rolling stock equipment GB/T 25119 Rail transit rolling stock electronic devices GB/T 28029.1-2020 Rail transit electronic equipment Train communication network (TCN) Part 1.Basic structure GB/T 28029.9-2020 Rail transit electronic equipment Train communication network (TCN) Part 3-1.Multi-function vehicle bus (MVB) GB/T 28029.12-2020 Rail transit electronic equipment Train communication network (TCN) Part 3-4.Ethernet marshaling network (ECN) GB/T 37943-2019 Beidou satellite timing terminal test method TB/T 1484.3-2017 Rolling Stock Cables Part 3.Communication Cables JJF(Communication)018-2021 Calibration Specification for Time Integrated Tester

3 Terms and definitions

The terms and definitions defined in GB/T 28029.1-2020 and the following apply to this document. 3.1 timereference The standard time is based on Beidou time as the initial time reference and atomic time as the time unit (s). 3.2 timeaccuracy The degree of agreement between a local clock and a time reference measured over a certain time interval. Note. It is expressed as the absolute value of time deviation. 3.3 Time accuracy localtimeaccuracy The degree of consistency between the local clock and the time reference measured within a specified time interval in the punctual state. Note. It is expressed as the absolute value of time deviation. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45308-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45308-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45308-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45308-2025_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.