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GB/T 6994-2025: Electrical installation in ships - Definitions and general requirements
Status: Valid GB/T 6994: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6994-2025 | English | 619 |
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Electrical installation in ships - Definitions and general requirements
| Valid |
GB/T 6994-2025
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| GB/T 6994-2006 | English | 574 |
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Electrical installation in ships -- Definitions and general requirements
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GB/T 6994-2006
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| GB/T 6994-1986 | English | RFQ |
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General requirements of the electrical installations in ships
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GB/T 6994-1986
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Standard similar to GB/T 6994-2025 GB/T 7357 GB/T 7358 Basic data | Standard ID | GB/T 6994-2025 (GB/T6994-2025) | | Description (Translated English) | Electrical installation in ships - Definitions and general requirements | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U60 | | Classification of International Standard | 47.020.60 | | Word Count Estimation | 30,361 | | Date of Issue | 2025-04-25 | | Date of Implementation | 2025-11-01 | | Older Standard (superseded by this standard) | GB/T 6994-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 6994-2025: Electrical installation in ships - Definitions and general requirements---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 47.020.60
CCSU60
National Standard of the People's Republic of China
Replace GB/T 6994-2006
Definition and general provisions of marine electrical equipment
Released on 2025-04-25
2025-11-01 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 2
4 General requirements and conditions 6
4.1 Overview 6
4.2 Applicability of this document to AC and DC 6
4.3 Permit conditions for substitutes and replacements 6
4.4 Regulation of maximum load 7
4.5 Additions and Changes 7
4.6 Environmental conditions 7
4.7 Materials 9
4.8 Power supply system characteristics 9
4.9 Electrical equipment in hazardous areas 10
4.10 Necessary measures to be taken when electrical accessories and cables are installed close to conductive material structures with different electrical potentials
4.11 Clearance and creepage distances 10
4.12 Insulation 11
4.13 Maintenance and Inspection 11
4.14 Enclosure protection grade 11
4.15 Cable entry 11
4.16 Precautions against vibration and mechanical shock 11
4.17 Installation location on board ship 11
4.18 Mechanical protection 11
4.19 Waterproof, steamproof and oilproof 11
4.20 Prevention of electric shock 11
4.21 Rotation axis 12
4.22 Magnetic compass 12
4.23 Environmental Impact 12
Appendix A (Informative) Environmental Conditions Guide 13
Reference 14
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 6994-2006 "Definitions and general provisions for marine electrical equipment". Compared with GB/T 6994-2006,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The scope of application has been changed. This document is applicable to electrical equipment with a voltage of 1000V AC and 1500V DC (see Chapter 1,.2006
Chapter 1 of the.2001 edition);
b) The temperature table in the design parameters has been deleted (see Table 4 of the.2006 edition);
c) Added the provisions for equipment operating ambient temperature (see 4.6.3.2);
d) The expression of power supply system characteristics has been changed (see 4.8, 4.8 of the.2006 edition);
e) Added provisions on pollution degree in the clauses on electrical clearance and creepage distance (see 4.11);
f) Added clauses on environmental impact (see 4.23);
g) The provisions on material classification tests have been deleted (see 4.28 of the.2006 edition);
h) The appendix on the flame retardancy test of cables has been deleted (see Appendix A of the.2006 edition);
i) The appendix on testing of wires or cable bundles under fire conditions has been deleted (see Appendix C of the.2006 edition).
This document is equivalent to IEC 60092-101.2018 "Marine electrical equipment Part 101.Definitions and general provisions".
The following minimal editorial changes were made to this document.
--- Change the name of the standard to "Definition and General Provisions for Marine Electrical Equipment".
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. Shanghai Ship Research and Design Institute, 704th Institute of China Shipbuilding Industry Corporation.
The main drafters of this document are. Yao Jiong, Huang Cheng, Li Jianbin, Yuan Jian, Tong Zhe, Tian Xin and Zhang Qixin.
The previous versions of this document and the documents it replaces are as follows.
---First published as GB/T 6694-1986 in 1986 and first revised in.2006;
---This is the second revision.
Definition and general provisions of marine electrical equipment
1 Scope
This document applies to ship electrical installations.
Unless otherwise specified, the definitions and general provisions of this document also apply to other parts of the IEC 60092 series of standards.
2 Normative references
The contents of the following documents constitute 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 7251.1-2023 Low-voltage switchgear and controlgear Part 1.General (IEC 61439-1.2020, IDT)
GB/T 28561-2023 Automation, control and measuring instruments for electrical equipment in ships (IEC 60092-504.2016, IDT)
IEC 60034-30-1 Rotating electrical machines Part 30-1.Efficiency classes for wire-controlled AC motors (IE code) [Rotatingelec-
Note. GB/T 32891.1-2016 Efficiency classification of rotating electrical machines (IE code) Part 1.AC motors supplied by mains (IEC 60034-30-1.
2014, IDT)
Note. GB/T 3836 (all parts) Explosive atmospheres [IEC 60079 (all parts)]
System design-General)
Note. GB/T 7358-2025 General principles for design of marine electrical equipment systems (IEC 60092-201.2019, IDT)
Note. GB/T 4208-2017 Enclosure Protection Degrees (IP Code) (IEC 60529.2013, IDT)
Note. GB/T 10250-2025 Electromagnetic compatibility of marine electrical and electronic equipment Metal hull ships (IEC 60533.2015, IDT)
IEC 60664-1 Insulation coordination for equipment in low-voltage supply systems Part 1.Principles, requirements and tests
Note. GB/T 16935.1-2023 Insulation coordination for equipment in low-voltage power supply systems Part 1.Principles, requirements and tests (IEC 60664-1.2020,
IDT)
IEC 60695-11-5 Fire hazard testing - Part 11-5.Test flame needle flame test method instrument, confirmatory test safety
Fire hazard testing - Part 11-5.Test flames - Needle - flame test method - Apparatus, con-
Note. GB/T 5169.5-2020 Fire hazard testing for electric and electronic products Part 5.Test flame needle flame test method device, confirmation test method
Methods and guidelines (IEC 60695-11-5.2016, IDT)
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