1、Recommendations for renewable energy and hybrid systems for rural electrificationPart 94: Integrated systems User installationPD IEC/TS 62257-9-4:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis Published Document is the UK implementation of
2、IEC/TS 62257-9-4:2016. It supersedes DD IEC/TS 62257-9-4:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/82, Photovoltaic Energy Systems.A list of organizations represented on this committee can be obtainedon request to its secretary.This publi
3、cation does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 91982 4ICS 27.160; 27.180Compliance with a British Standard cannot confer immu
4、nity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 October 2016.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD IEC/TS 62257-9-4:2016IEC TS 62257-9-4 Edition 2.0 2016-09 TECHNIC
5、AL SPECIFICATION Recommendations for renewable energy and hybrid systems for rural electrification Part 9-4: Integrated systems User installation INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.160 ISBN 978-2-8322-3588-1 Registered trademark of the International Electrotechnical Commission Warning!
6、 Make sure that you obtained this publication from an authorized distributor. colourinsidePD IEC/TS 62257-9-4:2016 2 IEC TS 62257-9-4:2016 IEC 2016 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative reference 7 3 Terms and definitions 8 4 General considerations 9 4.1 General . 9 4.2 Instal
7、lation limits . 9 4.3 User interface . 9 5 Protection against electric shock 9 5.1 Requirements for d.c. parts of installation 9 5.2 Requirements for a.c. parts of installation 9 5.2.1 General . 9 5.2.2 Neutral earthing system . 9 6 Protection against overcurrent . 11 7 Protection against effect of
8、lightning. 11 7.1 Installation supplied from a microgrid . 11 7.2 Standalone installation 11 8 Selection and erection of electrical equipment 12 8.1 Wiring system . 12 8.1.1 General . 12 8.1.2 Voltage drops 12 8.1.3 Cross-sectional area of conductors . 12 8.1.4 Connections . 13 8.1.5 Installation me
9、thod . 14 8.1.6 Selection and erection of wiring systems in relation to external influences 15 8.1.7 Specific rules to wiring systems buried in earth . 17 8.1.8 Circuits identification 18 8.2 Isolation and switching 18 8.2.1 Overcurrent protective devices . 18 8.2.2 Residual current devices 18 8.3 S
10、urge protective devices . 18 8.4 Earthing arrangement, protective conductors and protective bonding 18 8.5 User interface . 18 9 Verification 19 9.1 Pre-commissioning checks 19 9.1.1 General information . 19 9.1.2 Verification by inspection . 19 9.1.3 Verification by tests 20 10 Operation and mainte
11、nance . 20 Annex A (informative) Maximum possible length of circuits with different cables and conductors to handle maximum voltage drops (ambient temperature 30 C) . 21 Figure 1 Installation limits 9 PD IEC/TS 62257-9-4:2016IEC TS 62257-9-4:2016 IEC 2016 3 Figure 2 Protection of persons in an insta
12、llation supplied from a microgrid according to a TN-C-S system 10 Figure 3 Protection of persons in a combined d.c. and a.c. system 11 Figure A.1 Maximum possible length of circuit as a function of current for a voltage drop of 3 % in a.c. system in a cable HO5VVF . 22 Figure A.2 Maximum possible le
13、ngth of circuit as a function of current for a voltage drop of 15 % in d.c. system in a cable 1000RO2V 23 Table 1 Maximum design current of circuits depending on voltages . 11 Table 2 Maximum acceptable voltage drop values in installations 12 Table 3 Cross-sectional area for copper conductors in fix
14、ed installations . 13 Table 4 Selection of wiring systems 14 Table 5 Installation of wiring systems . 14 Table 6 Fuses/circuit breakers rating and selection for overcurrent protection . 18 PD IEC/TS 62257-9-4:2016 4 IEC TS 62257-9-4:2016 IEC 2016 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RECOMMEND
15、ATIONS FOR RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 9-4: Integrated systems User installation FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Co
16、mmittees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Ava
17、ilable Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental o
18、rganizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technic
19、al matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC
20、National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformi
21、ty, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC
22、 itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure t
23、hat they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any n
24、ature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referen
25、ced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main
26、 task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated effort
27、s, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transfo
28、rmed into International Standards. IEC 62257-9-4, which is a technical specification, has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. PD IEC/TS 62257-9-4:2016IEC TS 62257-9-4:2016 IEC 2016 5 This second edition cancels and replaces the first edition issued in 2006
29、. It constitutes a technical revision. The main technical changes with regard to the previous edition are as follows: Changing the voltage range covered by the technical specification to a.c. nominal voltage below 1 000 V and d.c. nominal voltage below 1 500 V (introduction). Including 240 V and 220
30、 V 1- in the voltage levels (scope). Introduced requirement that conductor used for lightning protection must be minimum 16 mm2(7.2). This part of IEC 62257 is to be used in conjunction with the IEC 62257 series. The text of this technical specification is based on the following documents: Enquiry d
31、raft Report on voting 82/1031/DTS 82/1090/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in th
32、e IEC 62257 series, published under the general title Recommendations for renewable energy and hybrid systems for rural electrification, can be found on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will
33、be updated at the time of the next edition. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be
34、 transformed into an International standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are c
35、onsidered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. PD IEC/TS 62257-9-4:2016 6 IEC TS 62257-9-4:2016 IEC 2016 INTRODUCTION The IEC 62257 series intends to provide to different players involved in rural electrificati
36、on projects (such as project implementers, project contractors, project supervisors, installers, etc.) documents for the setting up of renewable energy and hybrid systems with a.c. nominal voltage below 1 000 V, and d.c. nominal voltage below 1 500 V. These documents are recommendations: to choose t
37、he right system for the right place, to design the system, to operate and maintain the system. These documents are focused only on rural electrification concentrating on but not specific to developing countries. They should not be considered as all inclusive to rural electrification. The documents t
38、ry to promote the use of renewable energies in rural electrification; they do not deal with clean mechanisms developments at this time (CO2emission, carbon credit, etc.). Further developments in this field could be introduced in future steps. This consistent set of documents is best considered as a
39、whole with different parts corresponding to items for safety, sustainability of systems and at the lowest life cycle cost as possible. One of the main objectives is to provide the minimum sufficient requirements, relevant to the field of application that is: small renewable energy and hybrid off-gri
40、d systems. PD IEC/TS 62257-9-4:2016IEC TS 62257-9-4:2016 IEC 2016 7 RECOMMENDATIONS FOR RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 9-4: Integrated systems User installation 1 Scope This part of IEC 62257, which is a technical specification, specifies the general requirements
41、for the design and the implementation of a users installation. This part of IEC 62257 applies to single phase users electrical installations with maximum power of 500 VA, in Decentralized Rural Electrification Systems (DRES). NOTE For installations above 500 VA in decentralized electrification syste
42、ms, IEC TS 62257-5 applies. This part of IEC 62257 is applicable to installations supplied by an a.c microgrid (120 V or 220 V or 230 V or 240 V) and to installations encompassing their own single-unit a.c. micropower plant (120 V or 220 V or 230 V or 240 V) or d.c micropower plant (12 V or 24 V). T
43、he part of IEC 62257 applies neither to the electric power production and distribution installations described in the clauses concerning micropower plants and microgrids, nor to user electrical equipment. It details the rules governing the design and construction of consumers electrical installation
44、s for the purpose of ensuring the safety of persons and property, and satisfactory operation in accordance with the purpose for which the installations are designed. It applies to new installations and modifications of existing installations. 2 Normative reference The following documents are referre
45、d 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. IEC 60269 (all parts), Low-volta
46、ge fuses IEC 60364-5-52, Electrical installations of buildings Part 5-52: Selection and erection of electrical equipment Wiring systems IEC 62257 (all parts), Recommendations for renewable energy and hybrid systems for rural electrification IEC TS 62257-5, Recommendations for renewable energy and hy
47、brid systems for rural electrification Part 5: Protection against electrical hazards IEC TS 62257-7 (all parts), Recommendations for renewable energy and hybrid systems for rural electrification Part 7: Generators IEC TS 62257-7-1, Recommendations for small renewable energy and hybrid systems for ru
48、ral electrification Part 7-1: Generators Photovoltaic generators PD IEC/TS 62257-9-4:2016 8 IEC TS 62257-9-4:2016 IEC 2016 IEC TS 62257-9-3, Recommendations for renewable energy and hybrid systems for rural electrification Part 9-3: Integrated systems User interface 3 Terms and definitions For the p
49、urposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1 protective conductor identification: PE conductor provided for purposes of safety, for example protection against electric shock Note 1 to ent
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