Standard No.:	GB/T 25444.6-2023
English Name:	Mobile and fixed offshore units—Electrical installations—Part 6: Installation
Chinese Name:	移动式和固定式近海设施 电气装置 第6部分：安装
Chinese Classification:	U60    Electrical, observation/communication and navigation equipment for vessel in general
Professional Classification:	GB    National Standard
ICS Classification:	47.020.60 47.020.60    Electrical equipment of ships and of marine structures 47.020.60
Issued by:	SAMR; SAC
Issued on:	2023-12-28
Implemented on:	2024-4-1
Status:	valid
Superseding:	GB/T 25444.6-2010 Mobile and fixed offshore units - Electrical installations - Part 6: Installation
Language:	English
File Format:	PDF
Word Count:	20000 words
Price(USD):	600.0
Delivery:	via email in 1~3 business day

Mobile and fixed offshore units - Electrical installations - Part 6: Installation 1 Scope This document provides specific requirements for the installation of electrical equipment in mobile and fixed offshore units, including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes. This document specifies requirements such as those concerning ——protection during equipment storage and in the installation period, ——installation of generators and motors, ——installation of transformers, ——installation of switchgear and controlgear assemblies, ——installation of semiconductor converters and UPS, ——installation of secondary cells and batteries, ——installation of luminaires, ——installation of heating and cooking appliances, ——installation of trace and surface heating, ——installation of cables and wiring, both low-voltage and high-voltage cables, ——requirements in relation to earthing and bonding, ——lightning protection;, ——testing of completed installation, and ——documentation. This document applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations. This document does not apply to ——fixed equipment for medical purposes, ——electrical installations of tankers, and ——control of ignition sources other than those created by electrical equipment. Note 1: For medical rooms, IEC 60364-7-710 provides specific requirements. Requirements for tankers are given in IEC 60092-502. Note 2: Guidance on protection of non-electrical equipment can be found in ISO 80079-36, ISO 80079-37 and IMO 2009 MODU Code, 6.7. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 21714.3-2015 Protection against lightning - Part 3: Physical damage to structures and life hazard IEC 60092-350:2014 Electrical installations in ships - Part 350: General construction and test methods of power, control and instrumentation cables for shipboard and offshore applications IEC 60623 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells IEC 60825-2 Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCSs) IEC 60825-12 Safety of laser products - Part 12: Safety of free space optical communication systems used for transmission of information IEC 60896-11 Stationary lead-acid batteries - Part 11: Vented types - General requirements and methods of tests IEC 61892-1 :2019 Mobile and fixed offshore units - Electrical installations - Part 1: General requirements and conditions IEC 61 892-3:2019 Mobile and fixed offshore units - Electrical installations - Part 3: Equipment IEC 61892-7:2019 Mobile and fixed offshore units - Electrical installations - Part 7: Hazardous areas IEC 61914 Cable cleats for electrical installations IEC 62305-3:2010 Protection against lightning - Part 3: Physical damage to structures and life hazard IEC 62485-2:2010 Safety requirements for secondary batteries and battery installations - Part 2: Stationary batteries IMO 2009 MODU Code Code for the Construction and Equipment of Mobile Offshore Drilling Units, 2009 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61892-1:2019 and the following apply. 3.1 braid armour covering formed from braided metal wires used to protect a cable from external mechanical effects [SOURCE: IEC 60092-350:2020, 3.3, modified - The Notes have been deleted.] 3.2 armour covering consisting of metal tape(s) or wires, generally used to protect the cable from external mechanical effects [SOURCE: GB/T 2900.10-2013, 461-05-06] 3.3 electrostatic screen electrostatic shield (North America) earthed metallic layer surrounding a cable which confines the electric field generated by the cable within the cable cores, pair(s), triple(s) or quad(s), and/or protects the core(s), pair(s), triple(s) or quad(s) from external influence Note: Metallic sheaths, foils, braids, armours and earthed concentric conductors may also serve as an electrostatic screen, provided they are effectively earthed. [SOURCE: IEC 60092-350:2020, 3.9, modified - In the Note the word "grounded" has been deleted.] 3.4 insulation screen electrical screen of non-metallic semi-conducting layer in combination with a metallic layer [SOURCE: IEC 60092-350:2020, 3.18, modified - The second preferred term "core screen" has been omitted.] 3.5 battery compartment compartment comprising dedicated rooms, dedicated cabinets and dedicated boxes for installation of batteries 3.6 battery crate container with frame walls for holding several cells or batteries [SOURCE: IEC 60050-482:2004, 482-05-10] 3.7 battery tray container with a base and walls for holding several cells or batteries [SOURCE: IEC 60050-482:2004, 482-02-34] 3.8 battery rack support, stand or grating with one or more levels or tiers for the installation of cells or mono-bloc containers in a stationary battery [SOURCE: IEC 60050-482:2004, 482-05-24] 3.9 equipotential bonding provision of electric connections between conductive parts, intended to achieve equipotentiality [SOURCE: IEC 60050-1 95:1998, 195-01-10] 3.10 cable tray system cable ladder system assembly of cable supports consisting of cable tray lengths or cable ladder lengths and other system components [SOURCE: GB/T 21762-2008, 3.1] 3.11 surface heating trace heating utilization of electric trace heater cables, pads, panels and support components, externally applied and used to raise or maintain the temperature of contents in piping, tanks and associated equipment [SOURCE: GB/T 2900.35-2023, 426-20-39, modified - The preferred term "surface heating" has been added.] 3.12 exposed-conductive-part conductive part which can readily be touched and which is not normally alive, but which may become alive under fault conditions Note: Typical exposed-conductive-parts are walls of enclosures, operating handles, etc. [SOURCE: IEC 60050-441:2000, 441-11-1, modified - Hyphens have been added to the term.] 3.13 extraneous-conductive-part conductive part not forming a part of the electrical installation and liable to introduce an electric potential, generally the electric potential of a local earth [SOURCE: IEC 60050-195:1998, 195-06-11] 3.14 extra-low voltage; ELV voltage which does not exceed 50V AC RMS or 120V DC between conductors, or between any conductor and earth. Note: Information about protection by extra-low voltage is given in IEC 60364-4-41.