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GB/T 12980-2025: General technical requirements and test methods for marine low voltage power system
Status: Valid GB/T 12980: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12980-2025 | English | 279 |
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General technical requirements and test methods for marine low voltage power system
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GB/T 12980-2025
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| GB/T 12980-1991 | English | 319 |
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General technical requirement and testing method for marine power plant
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GB/T 12980-1991
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Basic data | Standard ID | GB/T 12980-2025 (GB/T12980-2025) | | Description (Translated English) | General technical requirements and test methods for marine low voltage power system | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U61 | | Classification of International Standard | 47.020.60 | | Word Count Estimation | 14,172 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 12980-1991 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 12980-2025: General technical requirements and test methods for marine low voltage power system
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General technical requirements and test methods for marine low voltage power system
General technical requirements for low-voltage power supply systems on board ships
and test methods
General technical requirements and test methods for marine low voltage
power system
ICS 47.020.60
CCS U 61
National Standard of the People's Republic of China
Replaces GB/T 12980-1991
Released on August 1, 2025
Implementation on February 1, 2026
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 categories... 2
5 Requirements... 2
5.1 Composition 2
5.2 Power System... 2
5.3 Power Supply Quality 2
5.4 Design... 2
5.5 System Protection... 3
5.6 Performance 4
5.7 Control Function Requirements 4
5.8 Environmental Adaptability 6
6 Test methods... 6
6.1 Test Equipment 6
6.2 Pre-test inspection 6
6.3 Insulation resistance measurement 6
6.4 Starting test 7
6.5 Load Test 7
6.6 Voltage and Frequency Adjustment Range Check 7
6.7 Checking the Steady-State Voltage and Speed Regulation... 7
6.8 Checking the transient change range of voltage and frequency 8
6.9 System Protection Check 8
6.10 Parallel Operation Test 8
6.11 Automatic control test of automatic power supply system 8
6.12 Mooring and navigation test 9
7 Inspection Rules... 9
7.1 Inspection Classification 9
7.2 Inspection Items... 9
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 is required.
This document replaces GB/T 12980-1991 "General Technical Requirements and Test Methods for Ship Power Stations" and is consistent with GB/T 12980-1991.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
The scope of application has been changed (see Chapter 1, Chapter 1 of the.1991 edition); a)
Changed the term "Ship Emergency Power Station" to "Emergency Power Station", "Frequency Regulation Accuracy" to "Steady-State Frequency Fluctuation", and changed
Corresponding definitions (see 3.4, 3.5, and 3.4 and 3.6 of the.1991 edition);
b)
The term "system voltage static variation" and its definition (see 3.7 of the.1991 edition) have been deleted; c)
The classification of AC and DC power stations and the method for compiling codes for major power station equipment (see 4.1 and 4.3 of the.1991 edition) have been deleted; d)
Added power supply system components (see 5.1); e)
The DC system selection has been deleted (see 5.3.2 of the.1991 edition); f)
Use "Working mode", "General requirements for power supply reliability and continuity", "Basic power station" and units and main switchboard for self-
The relevant requirements for circuit breakers with dynamic quasi-synchronous closing are combined and revised into "design" [see 5.4, 5.2, 5.5, 5.7,
5.9.3 d)];
g)
Increased insulation resistance, starting time, no-load voltage and frequency regulation, steady-state voltage and speed regulation, and parallel operation performance requirements
Request (see 5.6);
h)
Changed "parallel operation" to "parallel operation performance" (see 5.6.6, 5.4.6 of the.1991 edition); i)
Added control function requirements (see 5.7); j)
Changed "usage environment" to "environmental adaptability" (see 5.8, 5.1 of the.1991 edition); k)
Change "factory or complete test equipment" to "test equipment" (see 6.1,.1991 edition); l)
Change "factory test of power station equipment" to "each component equipment shall be inspected and qualified before testing" (see 6.1.3,.1991 edition)
6.2);
m)
Change "appearance inspection of the unit" and "appearance inspection of the switchboard and automatic control device" to "inspection before test" (see 6.2,.1991
Version 6.3.1.1, 6.3.1.2);
n)
Added voltage and frequency adjustment range inspection test method (see 6.6); o)
Changed the requirements for checking the transient variation range of voltage and frequency (see 6.8, 6.3.7 of the.1991 edition); p)
Added system protection inspection test method (see 6.9); q)
Added the automatic control test method for automatic power supply system (see 6.11.2); r)
Added inspection categories and deleted the content related to equipment factory test (see 7.1); s)
Added inspection items (see 7.2).
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 Ship Electrical and Electronic Equipment (SAC/TC 531).
This document was drafted by. China Shipbuilding Industry Corporation 704 Research Institute, Shanghai Jiao Tong University, China Shipbuilding Industry Corporation
The 708th Institute, Taizhou Haitian Electric Manufacturing Co., Ltd., and China Merchants Jinling Shipbuilding (Nanjing) Co., Ltd.
The main drafters of this document are. Xiao Yangting, Zhao Dacheng, Ji Xinke, Wu Dong, Guo Jian, Li Ran, Ding Feng, Zhu Shuijuan, Xue Minjuan, Li Shihao,
Zhou Zhengqi, Yu Aimei, Wang Zhaoyuan, and Cao Dayou.
The previous versions of this document and the documents it replaces are as follows.
First published in.1991 as GB/T 12980-1991;
This is the first revision.
General technical requirements for low-voltage power supply systems on board ships
and test methods
1 Scope
This document specifies the classification, requirements and inspection rules of ship low voltage AC power supply system (hereinafter referred to as "power supply system"), and describes
Corresponding test methods.
This document applies to low voltage AC power stations with a rated voltage not exceeding 1000 V, which are composed of main power stations, emergency power stations and mooring power stations on steel ships.
Design, production and testing of power supply systems.
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 latest version (including all amendments) applies to this document.
In this document.
GB/T 3471 General rules for mooring and navigation tests of seagoing vessels
Classification Rules for Seagoing Steel Ships, China Classification Society
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Main switchboard
An electrical device that receives the electrical energy generated by the main generator and controls, distributes it and is equipped with measurement and protection.
3.2
emergency switchboard
An electrical device that receives the electrical energy generated by the emergency generator and controls, distributes it and is equipped with measurement and protection.
3.3
ship main power station
A power station consisting of main generator sets, main switchboards, ancillary facilities and control devices.
3.4
emergency power station
A power station consisting of an emergency generator set, an emergency switchboard, and ancillary facilities and control devices.
3.5
Steady-state frequency fluctuation frequency tolerance
The maximum permissible deviation of frequency from the nominal frequency during normal operation.
Note. Steady-state frequency fluctuation does not include transient frequency fluctuation and periodic frequency changes, and is expressed as a percentage of the nominal frequency.
3.6
Imbalance of AC load
The difference between the actual load factor of each phase and the total average load factor.
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