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GB/T 18814-2024 English PDF

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GB/T 18814-2024: Small craft - Electrical systems - Alternating and direct current installations
Status: Valid

GB/T 18814: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 18814-2024English674 Add to Cart 5 days [Need to translate] Small craft - Electrical systems - Alternating and direct current installations Valid GB/T 18814-2024
GB/T 18814-2002English364 Add to Cart 3 days [Need to translate] Small craft -- Electrical systems -- Alternating Current installations Valid GB/T 18814-2002

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Basic data

Standard ID GB/T 18814-2024 (GB/T18814-2024)
Description (Translated English) Small craft - Electrical systems - Alternating and direct current installations
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard U37
Classification of International Standard 47.080
Word Count Estimation 34,355
Date of Issue 2024-08-23
Date of Implementation 2025-09-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 18814-2024: Small craft - Electrical systems - Alternating and direct current installations

---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.
ICS 47.080 CCSU37 National Standard of the People's Republic of China Replace GB/T 18814-2002, GB/T 19311-2003 Small Boat Electrical System AC and DC Installations (ISO 13297.2020, IDT) Released on 2024-08-23 2025-09-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements for DC and AC systems 5 5 General requirements for DC systems 5 6 General requirements for AC systems 6 7 signs, AC system 7 8 Battery, DC system 7 9 Battery disconnect switch, DC system 8 10 Power supply selection, AC system 9 11 Inverters and chargers, AC systems 9 12 Overcurrent protection, DC system 10 13 Overcurrent protection, AC system 10 14 Ground fault protection/earth leakage protection 11 15 Panels (distribution boards), AC and DC systems 11 16 Panel (distribution board), AC system 11 17 Conductors, DC and AC systems 12 18 conductors, DC system 12 19 Conductors, AC system 12 20 System wiring, DC and AC systems 13 21 System wiring, DC system 14 22 sockets, DC system 14 23 sockets, AC system 14 24 Appliances and equipment, AC systems 15 25 Anti-ignition protection devices, DC and AC systems 15 26 User Manual 15 Appendix A (Informative) Recommended system tests 16 Appendix B (Normative) Requirements for conductors 17 Appendix C (Informative) Typical AC System Diagram 19 Appendix D (Informative) Overcurrent protection position selection 24 Appendix E (Normative) Instructions provided with the user manual 26 Reference 27

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. This document replaces GB/T 18814-2002 "Small boat electrical system AC installation" and GB/T 19311-2003 "Small boat electrical system AC installation" This document is based on GB/T 18814-2002 and integrates the contents of GB/T 19311-2003. Compared with GB/T 18814-2002, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Added general requirements for DC and AC systems, DC systems and AC systems (see Chapters 4 to 6); b) The symbols and warning signs in "Signs, communication systems" have been changed (see 7.2, 5.2 of GB/T 18814-2002); c) Added battery electrical insulation range diagram and battery installation requirements (see 8.7, 8.9); d) Added the content of “Inverter and Charger, AC System” (see Chapter 11); e) Added the prerequisite for the use of reverse polarity indicator (see 13.3.2); f) Changed the AC power supply ground leakage protection requirements in "Ground Fault Protection/Earth Leakage Protection" (see 14.2, GB/T 18814-2002, 8.2); g) Added warning label (see 16.4); h) Added requirements for sockets and plugs for shore power equipment (see 23.1). This document is equivalent to ISO 13297.2020 "Small craft electrical systems - AC and DC installations". The following minimal editorial changes were made to this document. --- Added examples in 3.5 and notes to 3.11 and 3.18 in Terms and Definitions. 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 Small Boats (SAC/TC241). This document was drafted by. 708th Research Institute of China Shipbuilding Industry Corporation. The main drafters of this document are. Yang Bin, Ge Zhuo, Xia Huameng, Cui Yongzhi and Xie Fuqi. This document was first published in.2002 and this is the first revision. Small Boat Electrical System AC and DC Installations

1 Scope

This document specifies the design, manufacture and installation requirements for the following DC and AC electrical systems installed on board a boat, either alone or in combination. a) Extra low voltage DC electrical systems using a nominal voltage of 50 V or less; b) Single-phase AC electrical system with a nominal voltage not exceeding 250V. This document does not apply to the following. ---Comply with ISO 16315 requirements for DC voltage not exceeding 1500V, single-phase AC voltage not exceeding 1000V and three-phase AC voltage Electric propulsion systems with a voltage not exceeding 1000V; --- all wires that are part of the outboard engine assembly and do not extend beyond the fairing provided by the outboard engine manufacturer; --- Three-phase AC devices with a nominal voltage not exceeding 500V as specified in IEC 60092-507.

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. ISO 7010.2019 Graphical symbols - Safety colors and safety signs Registered safety signs ISO 8846.1990 Small craft electrical installations to prevent ignition of surrounding flammable gases ISO 10240.2022 Smallcraft- Owner's manual IEC 60309-2.2021 Industrial plugs, fixed or mobile sockets and appliance inlets Part 2.Contact pins and contact tubes 1) The.1999 edition of the ISO original text has been abolished and the referenced content has no difference with the latest edition. IEC 60529.1989 Degrees of protection provided by enclosures (IP code) enclosures(IPcode)] The following terms and definitions apply to this document. 3.1 craft'sground/earth Protective ground For safety purposes, a "ground" is formed by connecting a wire to a common "ground" (having the potential of the earth's surface). 3.2 Designed to place various exposed conductive parts of DC electrical equipment at substantially the same potential as external conductive parts, and to carry no current

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