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GB/T 11803-2025 English PDF

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Q: Should I purchase the latest version GB/T 11803-2025?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11803-2025 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$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 11803-2025: Marine A.C. low voltage switchboard
Status: Valid

GB/T 11803: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11803-2025	439	Add to Cart	4 days	Marine A.C. low voltage switchboard	Valid
GB/T 11803-1989	559	Add to Cart	3 days	Marine A.C low voltage switchboard. Construction and basic dimension

Basic data

Standard ID: GB/T 11803-2025 (GB/T11803-2025)
Description (Translated English): Marine A.C. low voltage switchboard
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U61
Classification of International Standard: 47.020.60
Word Count Estimation: 22,249
Date of Issue: 2025-08-01
Date of Implementation: 2026-02-01
Older Standard (superseded by this standard): GB/T 11803-1989, GB/T 11634-2000
Issuing agency(ies): State Administration for Market Regulation, Standardization Administration of China

GB/T 11803-2025: Marine A.C. low voltage switchboard

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT11803-2025
ICS 47.020.60 CCSU61 National Standard of the People's Republic of China Replaces GB/T 11803-1989, GB/T 11634-2000 Marine AC low voltage distribution board Released on August 1, 2025 Implementation on February 1, 2026 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 Requirement 2 4.1 Appearance Quality 2 4.2 Materials 2 4.3 Design and Structure 2 4.4 Performance 5 4.5 Protection level 9 4.6 Environmental adaptability 10 5 Test methods 11 5.1 Appearance Quality 11 5.2 Materials 11 5.3 Power-on operation 11 5.4 Protection 12 5.5 Temperature rise 12 5.6 Insulation resistance 12 5.7 Withstand voltage 12 5.8 Voltage Change 13 5.9 Frequency Change 13 5.10 Short circuit strength 13 5.11 Protection Level 14 5.12 High Temperature 14 5.13 Low Temperature 14 5.14 Damp Heat 14 5.15 mildew resistant 14 5.16 Salt spray resistance 14 5.17 Tilt 14 5.18 Swing 14 5.19 Vibration 14 5.20 Bounce 14 6 Inspection Rules 14 6.1 Inspection categories 14 6.2 Type inspection 14 6.3 Factory Inspection 15 7 Packaging, marking, transportation and storage 16 7.1 Packaging 16 7.2 Sign 16 7.3 Transportation and storage 17 8 Spare parts 17 Preface 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 replaces GB/T 11803-1989 "Structure and basic dimensions of marine AC low-voltage switchboards" and GB/T 11634- 2000 "General Technical Specifications for Marine AC Low Voltage Switchboards", compared with GB/T 11803-1989 and GB/T 11634-2000, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows. --- Added the term "distribution board" and its definition (see 3.1); --- Changed the requirements for distribution board fuses (see 4.3.5, 4.8.7 of GB/T 11634-2000); --- Changed the requirements for measuring instruments on distribution boards (see 4.3.6, 4.9 of GB/T 11634-2000); --- Changed the requirements for short-circuit protection devices for distribution boards (see 4.4.1.1, 4.8.1 of GB/T 11634-2000); --- Changed the requirements for switches and protective devices of distribution boards (see 4.4.1.5, 4.1, 4.2, 4.3 and In 4.2.4 of GB/T 11634-2000, the requirements for “steering gear feeder protection” for feeder lines were added (see 4.4.1.5.8); --- Changed the maximum allowable temperature rise requirements for the busbar of the distribution board (see 4.4.2.1, 4.4.2 of GB/T 11634-2000), added Neutral busbar cross-sectional area and current-carrying capacity requirements for grading busbars (see 4.3.3.5 and 4.3.3.6); --- Changed the requirements for voltage and frequency fluctuation and tilt swing conditions of the distribution board (see 4.4.5, 4.4.6, 4.6.4, GB/T 11634- 2000, 4.1.2, 4.1.1.3); --- Changed the requirements for the structure of the distribution board, and added the requirements for the protection level of the enclosure of the distribution board and the distribution board (see 4.5, 4.1, 4.2, 4.3 of GB/T 11803-1989 and 4.2.4 of GB/T 11634-2000). 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 and coordinated by the National Technical Committee for Standardization of Marine Electrical and Electronic Equipment (SAC/TC531). This document was drafted by. China Shipbuilding Industry Corporation No. 708 Research Institute, China Shipbuilding Marine Technology Co., Ltd., Harbin Institute of Technology Cheng University, Jiangsu New Yangzi Shipbuilding Co., Ltd., Hefei Guoxuan High-tech Power Energy Co., Ltd., China Classification Society Tianjin Branch, Guangzhou Haiyi Electric GAS LIMITED. The main drafters of this document are. Du Rui, Shi Jun, Cui Zhe, Yin Shibo, Feng Shaodong, Liu Hongda, Bi Yanmei, Li Shiming, Jin Li, Zhou Yunhu, Zhou Yilong, Si Nan, Zhou Guowei, Ma Xiangning, Li Gen, Wang Yuhang, Shi Junqi, Zhili, Liu Yuan, Li Peng, Liu Ruikang, and Han Qingnan. The previous versions of this document and the documents it replaces are as follows. ---First published in 1989 as GB/T 11803-1989; --- First issued as GB/T 11634-1989 in 1989 and first revised in.2000; ---This is the first integrated revision. Marine AC low voltage distribution board

1 Scope

This document specifies the requirements, inspection rules and marking, packaging, transportation and storage of marine AC low voltage switchboards (hereinafter referred to as "switchboards"). The corresponding test methods are described. This document applies to the main switchboard, emergency switchboard, zone switchboard and Design, manufacture and acceptance of distribution boards.

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 191-2008 Pictorial symbols for packaging, storage and transportation GB/T 2423.1 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature GB/T 2423.4 Environmental testing for electric and electronic products Part 2.Test methods Test Db. Cyclic damp heat (12h 12h cycle ring) GB/T 2423.10 Environmental testing Part 2.Test methods Test Fc. Vibration (sinusoidal) GB/T 2423.16 Environmental testing Part 2.Test methods and guidance. Mildew growth GB/T 2423.17 Environmental testing Part 2.Test methods Test Ka. Salt spray GB/T 2423.39 Environmental testing Part 2.Test methods Test Ee and guidance. Bulk cargo tests including bounce GB/T 2423.101 Environmental testing for electric and electronic products Part 2.Test methods Test. Tilt and swing GB/T 4208 Degrees of protection provided by enclosures (IP code) GB/T 6388 Shipping and Receiving Marks for Transport Packages GB/T 13306 Signage GB/T 13539 (all parts) Low-voltage fuses GB/T 14048.2 Low-voltage switchgear and controlgear Part 2.Circuit breakers GB/T 35698.1 Calculation of short-circuit current effects Part 1.Definitions and calculation methods

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 switchboard A combination of switchgear and controlgear for distributing electrical power to a ship's electrical loads. 3.2 Main switchboard A switchboard that is supplied directly from the main power source and distributes electrical energy to various facilities on board the ship. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 11803-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 11803-2025_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 11803-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 11803-2025_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.

Question 5: Should I purchase the latest version GB/T 11803-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11803-2025 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.