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GB/T 25444.3-2023: Mobile and fixed offshore units - Electrical installations - Part 3: Equipment
Status: Valid GB/T 25444.3: Evolution and historical versions
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Mobile and fixed offshore units - Electrical installations - Part 3: Equipment
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GB/T 25444.3-2023
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Mobile and fixed offshore units -- Electrical installations -- Part 3: Equipment
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Standard similar to GB/T 25444.3-2023 GB/T 25444.6 GB/T 25444.5 GB/T 25444.2 Basic data | Standard ID | GB/T 25444.3-2023 (GB/T25444.3-2023) | | Description (Translated English) | Mobile and fixed offshore units - Electrical installations - Part 3: Equipment | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U60 | | Classification of International Standard | 47.020.60 | | Word Count Estimation | 46,412 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 25444.3-2010 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 25444.3-2023: Mobile and fixed offshore units - Electrical installations - Part 3: Equipment---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 Standards of People's Republic of China
Replace GB/T 25444:3-2010
Electrical installations for mobile and fixed offshore installations
Part 3: Equipment
(IEC 61892-3:2019, MOD)
Published on 2023-12-28
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface V
Introduction VII
1 Scope 1
2 Normative references 1
3 Terms and Definitions 6
4 General requirements 8
4:1 Overview 8
4:2 Maintenance, operation and inspection access 8
4:3 Interface connection 9
4:4 Document 9
4:5 Nameplates and labels 9
4:6 Signal lights 9
4:7 Component and wiring identification (inside the cabinet) 9
4:8 Housing/Materials10
4:9 Cabinet door 10
4:10 Direct contact protection10
4:11 Liquid leakage protection 11
4:12 Ventilation/air cooling11
4:13 Liquid cooling 11
4:14 Grounding 11
4:15 Electromagnetic compatibility and anti-interference methods 13
4:16 Termination/terminal block design for external cables13
4:17 Internal wiring and terminals 14
4:18 Control voltage 14
4:19 Short circuit rating of components14
4:20 Prevention of condensation14
5 Generators and electric motors14
5:1 General requirements 14
5:2 Voltage adjustment of generator 15
5:3 Special generator 16
5:4 Parallel operation of general generators---alternator 16
5:5 Mechanical characteristics (generators and electric motors) 17
5:6 Lubrication (generators and electric motors) 17
5:7 Prime mover 17
5:8 Circulation unevenness18
5:9 Lubrication (prime mover) 18
5:10 Running speed 19
5:11 Test 19
6 Transformer 19
6:1 General requirements 19
6:2 Winding arrangement 19
6:3 Terminal 19
6:4 Cooling requirements 19
6:5 Non-sealed liquid-immersed (oil-immersed) transformer 20
6:6 Voltage adjustment 20
7 Switchgear and controlgear combinations20
7:1 General requirements 20
7:2 Definition 20
7:3 Locking device 20
7:4 Low-voltage switchgear and control equipment combinations 20
7:5 Switchgear and control equipment in the range of 1kV~52kV22
7:6 Switchgear and control equipment above 52kV23
7:7 Instrumentation of combined installations 24
8 Semiconductor converter 26
8:1 General requirements 26
8:2 Cooling device 26
8:3 Conditions of use 26
8:4 Application 27
8:5 Transformers for converters 27
9 Batteries and battery packs 27
9:1 General requirements 27
9:2 Battery pack type 27
9:3 Charging equipment28
9:4 Ventilation of battery compartment 28
10 lamps 29
11 Electric heaters and electric cookers29
12 Electric heating 29
13 Communication 29
13:1 Overview 29
13:2 Safety requirements 29
13:3 External communication system 29
13:4 Internal communications 30
13:5 Safety and Maintenance 30
14 Control and Instrumentation 31
14:1 General requirements 31
14:2 Isolation 31
14:3 Accessibility31
14:4 Replacement 31
14:5 Non-interchangeability31
14:6 Cooling air 31
14:7 Mechanical loads on connecting devices31
14:8 Mechanical characteristics of the cabinet 31
14:9 Buffers and shock absorbers 31
14:10 Internal wiring 32
14:11 Cable terminal 32
14:12 Sensor 32
14:13 Reliability32
14:14 Hardware modularization 32
14:15 Accessories 32
14:16 Power 32
14:17 Test 32
14:18 Spare parts 33
15 Apparatus for accommodation and similar areas33
15:1 General requirements 33
15:2 Switch 33
15:3 Sockets and plugs 33
Reference 34
Figure 1 Typical examples of PE conductors, IE conductors and IS conductors with earth loop12
Figure 2 Typical examples of PE conductors without earth loops and combined IE conductors and IS conductors13
Table 1 Grounding conductor for enclosure 12
Table 2 Circular non-uniformity limits 18
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is Part 3 of GB/T 25444 "Electrical Installations for Mobile and Fixed Offshore Installations": GB/T 25444 has been issued
The following parts have been published:
---Part 1: General requirements and conditions;
---Part 2: System Design;
---Part 3: Equipment;
---Part 5: Mobile facilities;
---Part 6: Installation;
---Part 7: Hazardous areas:
This document replaces GB/T 25444:3-2010 "Electrical installations for mobile and fixed offshore installations - Part 3: Equipment" and is consistent with
Compared with GB/T 25444:3-2010, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) The voltage limit of "AC voltage not greater than 35000V and DC voltage not greater than 750V" has been deleted from "Scope" (see
Chapter 1, Chapter 1 of the:2010 edition);
b) Change "General Provisions" to "General Requirements" and make general provisions on related electrical equipment (see Chapter 4,:2010 edition
Chapter 4);
c) Change "power and lighting transformers" to "transformers", add "non-sealed liquid-immersed (oil-immersed) transformers", and delete "parallel operation"
"Exercise" and "Experiment" (see Chapter 6, Chapter 6 of the:2010 edition);
d) Changed the relevant requirements for "switchgear and control equipment combinations" (see Chapter 7, Chapter 7 of the:2010 edition);
e) Delete the requirements related to "internal windings", "accessibility" and "diagrams" (see 8:2, 8:4 and 8:7 of the:2010 edition);
f) Deleted the specific requirements for “lighting fixtures” (see Chapter 10 of the:2010 edition);
g) Deleted the specific requirements for "electric heaters and electric cookers" (see Chapter 11 of the:2010 edition);
h) The chapter "Underwater Systems and Equipment" has been deleted (see Chapter 14 of the:2010 edition):
This document is modified to adopt IEC 61892-3:2019 "Electrical installations for mobile and fixed offshore installations - Part 3: Equipment":
The technical differences between this document and IEC 61892-3:2019 and their reasons are as follows:
---Replace IEC 61439-2:2011 with normatively quoted GB/T 7251:2-2023 (see 7:4:1, 7:4:4:1, 7:4:4:2,
14:2), to ensure that the normative reference documents are the latest version;
---The "general requirements" of "design verification" were changed from required clauses to recommended clauses (see 7:4:4:1) to ensure the applicability of the standard in our country
responsiveness;
---Deleted the normative references in 6:1 of IEC 61892-3:2019 IEC 60146-1-3 and the normative references in Chapter 12
IEC 60519-10, as these two standards have been abolished and have not been replaced by any standard:
The following editorial changes have been made to this document:
---A note was added in 4:7:4 that "the identification of three-phase busbars is distinguished by different color codes";
---A note was added in 4:7:5 "The markings of the DC bus are distinguished by different color scales (positive brown, negative blue): For example: positive brown scale
Marked as 'BK', negative blue is marked as 'BU'":
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is under the jurisdiction of the National Standardization Technical Committee for Ship Electrical and Electronic Equipment (SAC/TC531):
This document was drafted by: Comprehensive Technical and Economic Research Institute of China State Shipbuilding Corporation, Shanghai Ship Research and Design Institute, CNOOC Research
GENERAL HOSPITAL LIMITED:
The main drafters of this document: Zhao Chenning, Liu Yishe, Xie Jiachun, Wei Che, Yang Yuting, Wu Yaozeng, Liu Guofeng, Guo Ya, Wang Cong:
The previous versions of this document and the documents it replaces are as follows:
---First published in:2010 as GB/T 25444:3-2010;
---This is the first revision:
Introduction
GB/T 25444 "Electrical Installations for Mobile and Fixed Offshore Facilities" aims to cover general requirements, system design, equipment, cables, mobile
Facilities, installation and hazardous areas, etc:, proposed designs for electrical equipment in mobile and fixed offshore facilities used for petroleum exploration or extraction:
Design, installation, maintenance and use requirements, applicable to pipelines, pumping stations or pipelines for drilling, production, accommodation, processing, oil storage and unloading in the offshore oil industry
In-tube cleaning station, air compressor station and single buoy mooring facility:
GB/T 25444 is planned to consist of seven parts:
---Part 1: General requirements and conditions: The purpose is to provide for mobile and fixed offshore installations used for petroleum exploration or extraction
General requirements for electrical installations:
---Part 2: System Design: The purpose is to specify systems for mobile and fixed offshore installations used in petroleum exploration or extraction
Design requirements:
---Part 3: Equipment: The purpose is to specify the design of equipment for mobile and fixed offshore installations used in petroleum exploration or extraction:
and testing requirements:
---Part 4: Cables: The purpose is to provide for the electrical installation of mobile and fixed offshore installations used in petroleum exploration or extraction:
Cable selection requirements:
---Part 5: Mobile facilities: The purpose is to provide for the electrical
Additional features of the device:
---Part 6: Installation: The purpose is to provide for the electrical installation of mobile and fixed offshore installations used in petroleum exploration or extraction:
installation requirements:
---Part 7: Hazardous areas: The purpose is to regulate the hazards of mobile and fixed offshore installations used for petroleum exploration or extraction:
Area classification and selection requirements for electrical equipment in hazardous areas:
GB/T 25444 aims to form a series of standards applicable to electrical equipment in the offshore petroleum industry, but is not limited to petroleum equipment:
use:
Electrical installations for mobile and fixed offshore installations
Part 3: Equipment
1 Scope
This document specifies the following requirements for electrical equipment:
a) Enclosure, regarding component material, identification (nameplate and nameplate), ventilation, grounding, electromagnetic compatibility and short-circuit rating:
b) Specific requirements for devices related to offshore installations, such as:
1) Generators and electric motors;
2) Transformer;
3) Switchgear and control equipment combinations;
4) Power supply instrumentation;
5) Semiconductor converter;
6) Batteries and battery packs;
7) Lamps;
8) Communication equipment;
9) Control and measuring instruments;
10) Apparatus for use in accommodation compartments and similar areas:
This document applies to electrical equipment for mobile and fixed offshore installations, including drilling, production, accommodation, processing and
Pipelines for construction, oil storage and unloading, pumping stations or pipeline cleaning stations, air compressor stations and single buoy mooring facilities:
This document applies to all permanent, temporary, mobile or handheld AC and DC installations, regardless of voltage level: ginseng
The equipment standards may provide voltage level restrictions:
This document does not apply to the following devices:
---Medical fixed electrical devices;
---Electrical installation of liquid cargo ship;
--- Ignition source control equipment other than ignition sources controlled by electrical equipment:
Note 1: For specific requirements regarding medical offices, see IEC 60364-7-710: The relevant requirements for tankers are found in IEC 60092-502:
Note 2: See IEC 61892-7 for specific requirements related to electrical equipment in hazardous areas:
Note 3: For guidance on the protection of non-electrical equipment, see ISO 80079-36, ISO 80079-37 and 6:7 of the IMO2009 MODU rules:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 3906-2020 3:6kV~40:5kV AC metal-enclosed switchgear and control equipment (IEC 62271-200:
2011,MOD)
Note: There is no technical difference between the quoted content of GB/T 3906-2020 and the quoted content of IEC 62271-200:2011:
GB/T 7251:1-2023 Low-voltage switchgear and control equipment Part 1: General provisions (IEC 61439-1:2020, IDT)
Note: There is no technical difference between the quoted content of GB/T 7251:1-2023 and the quoted content of IEC 61439-1:2011:
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