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GB/T 7358-2025Electrical installations in ships - System design - General (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

November 1, 2025

Scope

GB/T 7358-2025 (Electrical installations in ships - System design - General) is available as an English-translated PDF.

GB/T 7358-2025 — This document applies to the general requirements for the design of marine electrical equipment systems.

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Document preview — GB/T 7358-2025

National Standard of the People's Republic of China

ICS
47.020.60
Classification
U 60
Replacing
GB/T 7358-1998

Issued by: State Administration for Market Regulation, China National Standardization Administration

Contents

  • Preface
  • 1 Scope
  • 2 Normative references
  • 3 Terms and Definitions
  • 3.1 General
  • 3.2 Power distribution system
  • 3.3 DC power distribution system
  • 3.4 AC power distribution system
  • 3.5 Power Supply
  • 4 Safety
  • 4.1 General requirements
  • 4.2 Protection level
  • 5 System Design
  • 5.1 General requirements
  • 5.2 System Analysis and Calculation
  • 5.3 File
  • 6 Power Distribution System
  • 6.1 General requirements
  • 6.2 DC Power Distribution System
  • 6.3 AC power distribution system
  • 7 System grounding
  • 7.1 General requirements
  • 7.2 Neutral point grounding method
  • 7.3 Parallel operation of generators and/or main distribution transformers
  • 7.4 Earthing resistor, connected to hull/structure
  • 8 Power Supply
  • 8.1 Auxiliary equipment power supply
  • 8.2 Main bus tie circuit breaker
  • 8.3 Dead Ship Starting
  • 8.4 Consequences of bus failure or control system failure
  • 8.5 Additional power supply
  • 8.6 Emergency power supply
  • 9 Requirements for power distribution systems
  • 9.1 General requirements
  • 9.2 Power distribution system for container loads or temporary loads
  • 9.3 Power distribution method
  • 9.4 Load Balancing
  • 9.5 The final split
  • 9.6 Socket
  • 9.7 Lighting circuit
  • 9.8 Shore power connection
  • 9.9 Electric and electro-hydraulic steering gear
  • 9.10 Navigation Lights
  • 9.11 Navigation Device
  • 9.12 Radio Devices
  • 9.13 Fixed installed bilge pumps 24
  • 9.14 Motor Circuit
  • 9.15 Lighting
  • 9.16 Inboard communication circuit
  • 10 Cable
  • Reference

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 7358-1998 "General principles for design of marine electrical equipment systems". Compared with GB/T 7358-1998, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Added the terms "electric rudder" and "steering gear power unit" (see 3.17 and 3.19);

--- Added provisions on analysis and calculation (see 5.2);

--- Added provisions on documents (see 5.3);

--- Changed the provisions on power distribution system (see Chapter 6, Chapter 4 and Chapter 5 of Part III of the 1998 edition);

--- Changed the provisions on the requirements for power distribution systems (see Chapter 6, Chapter 7 to Chapter 20 of Part V and Part VI of the 1998 edition Chapter 21~Chapter 25);

--- Added provisions on system grounding (see Chapter 7);

--- Changed the provisions on power supply (see Chapter 8, Chapter 6 of Part IV of the 1998 edition);

--- Deleted the provisions on cables (see Chapter 27 to Chapter 40 of Part VIII of the 1998 edition);

--- Added provisions on electric and electro-hydraulic steering gear (see 9.9).

This document is equivalent to IEC 60092-201:2019 "Marine electrical equipment Part.201.General principles for system design".

The following minimal editorial changes were made to this document.

--- In order to coordinate with the existing standards, the name of the standard is changed to "General Principles for Design of Marine Electrical Equipment Systems".

1 Scope

This document applies to the general requirements for the design of marine electrical equipment systems.

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.

Note. GB/T 6994-2006 Definitions and general provisions for marine electrical equipment (IEC 60092-101:2002, IDT) Part 202: Systemdesign-Protection) Note. GB/T 7357-2010 System design protection for electrical equipment in ships (IEC 60092-202:1994, MOD) Note. GB/T 21065-2007 Installation and completion tests of marine electrical installations (IEC 60092-401:1980, IDT) IEC 60364-1 Low-voltage electrical installations Part 1: Basic principles, general characteristics evaluation and definitions (Low-voltageelectri-Note. GB/T 16895.1-2008 Low voltage electrical installations Part 1: Basic principles, general characteristics evaluation and definitions (IEC 60364-1:2005, IDT) Note. GB/T 38329.1-2019 Port ship-shore connection Part 1: General requirements for high voltage shore connection (HVSC) system (IEC/IEEE80005-1.

2012, IDT)

GB/T 38329.2-2021 Port ship-shore connection Part 2: Data transmission for monitoring and control of high-voltage and low-voltage shore power connection systems (IEC/IEEE80005-2.2016,IDT) GB/T 38329.3-2023 Port ship-shore connection Part 3: General requirements for low voltage shore connection (LVSC) system (IEC PAS80005-3.

2014,MOD)

lifeatsea,SOLAS)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 General

3.1.1

deadship

All mechanical devices including the power supply are stopped, and the main propulsion device is put into operation by compressed air or starting batteries.

A state where auxiliary services for operation and restoration of main power supply are also unavailable.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 26 pages — is available in the English PDF.

Referenced standards

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