1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-20205-7 ARP 062-9-3:2008Edition 1IEC/TS 62257-9-3:2006Edition 1STANDARDS SOUTH AFRICA Recommended practice Recommendations for small renew
4、able energy and hybrid systems for rural electrification Part 9-3: Integrated system User interface This recommended practice is the identical implementation of IEC/TS 62257-9-4:2006 and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conj
5、unction with the ARP 062 series. This document does not have the status of a South African National Standard. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards Sout
6、h Africa ARP 062-9-3:2008 Edition 1 IEC/TS 62257-9-3:2006 Edition 1 Table of changes Change No. Date Scope National foreword This recommended practice is a technical agreement developed in accordance with SANS 1-1, and agreed to by StanSA TC 69, Power electronics and alternative energy conversion. T
7、his document was published in February 2008. TECHNICAL SPECIFICATION IECTS 62257-9-3First edition2006-10Recommendations for small renewable energy and hybrid systems for rural electrification Part 9-3: Integrated system User interface PRICE CODE IEC 2006 Copyright - all rights reserved No part of th
8、is publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone
9、: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch M For price, see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical Commission ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing
10、 clients of the SABS . 2 TS 62257-9-3 IEC:2006(E) CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative reference .6 3 Terms and definitions .7 4 Electrical characteristics.9 4.1 Equipment.9 4.2 System voltages9 5 Functional description 9 6 Design and erection .10 6.1 System earthing 10 6.2 Imple
11、mentation of interface functions 10 6.3 Insulation requirements .11 6.4 Selection of electrical equipment.11 6.5 Housing.11 6.6 Protection against fraudulent use 12 7 Information to be given and marking.12 8 Verification and acceptance12 8.1 General .12 8.2 Verification by inspection.12 8.3 Commissi
12、oning tests .13 Figure 1 General configuration of an electrification system 6 Figure 2 Interface for user installations supplied from a a.c. or a d.c. source .9 Figure 3 Interface for user installations supplied locally from a.c. or d.c. sources (not from a microgrid) 10 Table 1 Functions ensured by
13、 various types of user interfaces.9 ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TS 62257-9-3 IEC:2006(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL
14、 ELECTRIFICATION Part 9-3: Integrated system User interface FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
15、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 Available Specifications (PAS) and Guides (hereafter referred t
16、o 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 organizations liaising with the IEC also participate in this
17、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 technical matters express, as nearly as possible, an international
18、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 National Committees in that sense. While all reasonable effo
19、rts 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 uniformity, IEC National Committees undertake to apply IEC Publicati
20、ons 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 provides no marking procedure to indicate its approval and
21、cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that 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 an
22、d members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature 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 Publica
23、tion or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced 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 Publica
24、tion may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical s
25、pecification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, 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 Internation
26、al Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC 62257-9-3, which is a technical specification, has been prepared by IEC technical committee 82: Solar photovoltaic energy systems.
27、 This part of IEC 62257-9 is based on IEC/PAS 62111 (1999); it cancels and replaces the relevant parts of IEC/PAS 62111. ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 TS 62257-9-3 IEC:2006(E) This part of IEC 62257-9 is t
28、o be used in conjunction with the IEC 62257 series. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 82/413/DTS 82/440/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting
29、indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 62257 series, under the general title Recommendations for small renewable energy and hybrid systems for rural electrification, can be found on the IEC web
30、site. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an interna
31、tional standard; reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TS 62257-9-3 IEC:2006(E
32、) 5 INTRODUCTION The IEC 62257 series intends to provide to different players involved in rural electrification 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 vo
33、ltage below 500 V, d.c. nominal voltage below 750 V and nominal power below 100 kVA. These documents are recommendations: to choose the 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
34、on but not specific to developing countries. They should not be considered as all inclusive to rural electrification. The documents try 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
35、.). Further developments in this field could be introduced in future steps. This consistent set of documents is best considered as a 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
36、 provide the minimum sufficient requirements, relevant to the field of application that is: small renewable energy and hybrid off-grid systems. ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 TS 62257-9-3 IEC:2006(E) RECOMM
37、ENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 9-3: Integrated system User interface 1 Scope The purpose of this part of IEC 62257 is to specify the general requirements for the design and the implementation of the interface equipment within the users installa
38、tion which connects to a microgrid or the generating part of a standalone system. This interface is a part of the users installation as shown in Figure 1. Microgrid Production sub-system Micropowerplant User interface Distribution sub-system User sub-system Installation Generator Other equipment IEC
39、 1909/06 Figure 1 General configuration of an electrification system This part of IEC 62257-9 applies to a simplified users interfaces (distribution board) in electrical installations with maximum power of 500 VA in Decentralized Rural Electrification Systems (DRES). NOTE For installations above 500
40、 VA in decentralized electrification systems, IEC 62257-5 applies. This part of IEC 62257-9 applies to an interface equipment within the users installation and which connects the users installation to: 230 V a.c. or 120 V a.c. microgrid, the generating part a.c. or d.c. - of a stand-alone installati
41、on. This equipment provides protection, isolation, and distribution functions. 2 Normative reference The following referenced documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenc
42、ed document (including any amendments) applies. IEC 60364 (all parts), Electrical installations of buildings ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .TS 62257-9-3 IEC:2006(E) 7 IEC 60439-3:1990, Low-voltage switchgear a
43、nd control gear assemblies Part 3: Particular requirements for low-voltage switchgear and control gear assemblies intended to be installed in places where unskilled persons have access for their use Distribution boards Amendment 1:1993 Amendment 2:2001 IEC 62257 (all parts), Recommendations for smal
44、l renewable energy and hybrid systems for rural electrification 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 carrier (messenger) wire or rope, the primary function of which is to support the cable in aerial installations, which may be sepa
45、rate from or integral with the cable it supports 3.2 block part of a line between two consecutive stoppage poles 3.3 earth conductive mass of the earth, whose electric potential at any point is conventionally taken as equal to zero 3.4 equipotential bonding provision of electric connections between
46、conductive parts, intended to achieve equipotentiality NOTE The role of the equipotential bonding is to decrease the difference in potential that can exists between two exposed-conductive parts of an installation. 3.5 microgrid subsystem of a DRES intended for power distribution of which the capacit
47、y does not exceed 100 kVA NOTE The prefix micro is intended to express the low level of transmitting capacity. 3.6 micropowerplant subsystem of a DRES for power generation up to 100 kVA NOTE The prefix micro is intended to express the low power level generated (from a few kVA to a few tens of kVA).
48、3.7 protective conductor (identification: PE) conductor provided for purposes of safety, for example protection against electric shock IEV 195-02-09 ARP 062-9-3:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 8 TS 62257-9-3 IEC:2006(E) 3
49、.8 PEN conductor conductor combining the functions of a protective earthing conductor and a neutral conductor IEV 195-02-12 3.9 power line overhead or underground line installed to convey electrical energy for any purpose other than communication 3.10 section of an overhead line part of a line between two tension poles NOTE A section generally includes several spans. 3.11 selectivity (or protection coordination) the ability of
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