1、BSI Standards PublicationElectrical installations for lighting and beaconing of aerodromes Safety secondary circuits in series circuits General safety requirementsBS EN 62870:2015National forewordThis British Standard is the UK implementation of EN 62870:2015. It is identical to IEC 62870:2015.The U
2、K participation in its preparation was entrusted to TechnicalCommittee EPL/97, Aeronautical ground lighting.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users a
3、re responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 83748 7ICS 29.140.50; 93.120Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、 of theStandards Policy and Strategy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62870:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62870 December 2015 ICS 29.140.50; 93.120 English Version Electrical installations fo
5、r lighting and beaconing of aerodromes - Safety secondary circuits in series circuits - General safety requirements (IEC 62870:2015) Installations lectriques pour lclairage et le balisage des arodromes - Circuits secondaires de scurit dans des circuits srie - Exigences gnrales de scurit (IEC 62870:2
6、015) Elektrische Anlagen fr Beleuchtung und Befeuerung von Flugpltzen - Sicherheitssekundrkreise in Serienstromkreisen - Allgemeine Sicherheitsfestlegungen (IEC 62870:2015) This European Standard was approved by CENELEC on 2015-10-21. CENELEC members are bound to comply with the CEN/CENELEC Internal
7、 Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
8、ELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the officia
9、l versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Mal
10、ta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC
11、Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62870:2015 E BS EN 62870:2015EN 62870:2015 2 European foreword The text of document 97/167/FDIS, future edition 1 of IEC 62870
12、, prepared by IEC/TC 97 “Electrical installations for lighting and beaconing of aerodromes“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62870:2015. The following dates are fixed: latest date by which the document has to be implemented at national level by publication
13、 of an identical national standard or by endorsement (dop) 2016-07-21 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-10-21 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
14、CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62870:2015 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following n
15、otes have to be added for the standards indicated: IEC 60364-1 NOTE Harmonized as HD 60364-1. IEC 61558-1:2005 NOTE Harmonized as EN 61558-1:2005 (not modified). BS EN 62870:2015EN 62870:2015 3 Annex ZA (normative) Normative references to international publications with their corresponding European
16、publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) app
17、lies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/H
18、D Year IEC 60364-4-41 - Low-voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock HD 60364-4-41 - IEC 60417 - Graphical symbols for use on equipment - - IEC 60529 - Degrees of protection provided by enclosures (IP Code) EN 60529 - IEC 61000-6-2 - Ele
19、ctromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments EN 61000-6-2 - IEC 61000-6-4 - Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments EN 61000-6-4 - IEC 61140 - Protection against electri
20、c shock - Common aspects for installation and equipment EN 61140 - IEC 61558-2-4 - Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating
21、 isolating transformers EN 61558-2-4 - IEC 61558-2-6 - Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating tra
22、nsformers EN 61558-2-6 - BS EN 62870:2015EN 62870:2015 4 Publication Year Title EN/HD Year IEC 61821 - Electrical installations for lighting and beaconing of aerodromes - Maintenance of aeronautical ground lighting constant current series circuits EN 61821 - IEC 61822 - Electrical installations for
23、lighting and beaconing of aerodromes - Constant current regulators EN 61822 - IEC 61823 - Electrical installations for lighting and beaconing of aerodromes - AGL series transformers EN 61823 - CISPR 11 - Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Lim
24、its and methods of measurement EN 55011 - CISPR 22 - Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement EN 55022 - BS EN 62870:2015 2 IEC 62870:2015 IEC 2015 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and de
25、finitions 7 4 Requirements for the SELV/PELV supply . 9 4.1 General . 9 4.2 SELV/PELV-safety demarcation line in an AGL series circuit 10 4.3 Environmental conditions 11 4.4 Degree of protection provided by enclosures 11 4.5 Electromagnetic compatibility (EMC) . 11 4.5.1 Limits of electromagnetic em
26、ission 11 4.5.2 Limits of immunity 12 4.6 Marking . 12 4.6.1 Marking of the SELV/PELV power supply . 12 4.6.2 Marking at the installation locations . 12 4.7 Protection against electric shock . 12 4.7.1 Basic requirements 12 4.7.2 Protective measure to be applied . 12 4.7.3 Protective separation from
27、 the primary series circuit 13 4.7.4 Assemblies in the SELV/PELV supply 13 4.7.5 Load of the SELV/PELV supply 13 4.8 Interfaces 14 4.8.1 Supply unit 14 4.8.2 Connectors 14 5 Testing 14 5.1 Type tests . 14 5.2 Routine tests. 14 Annex A (informative) System design selection 15 Bibliography 16 Figure 1
28、 Safety demarcation line in a SELV system . 10 Figure 2 Safety demarcation line in a PELV system . 11 Table A.1 Comparison of characteristics of PELV and SELV 15 BS EN 62870:2015IEC 62870:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING
29、OF AERODROMES SAFETY SECONDARY CIRCUITS IN SERIES CIRCUITS GENERAL SAFETY REQUIREMENTS 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 t
30、o 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 Available Specifications (PAS) and G
31、uides (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 organizations liaising with the IE
32、C 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 technical matters express, as nearly as
33、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 National Committees in that sense
34、. 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 uniformity, IEC National Committees under
35、take 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 itself does not provide any atte
36、station 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 that they have the latest edition
37、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 nature whatsoever, whether direct
38、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 referenced publications is indispensable
39、 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. International Standard IEC 62870 has been
40、 prepared by IEC technical committee 97: Electrical installations for lighting and beaconing of aerodromes. The text of this standard is based on the following documents: FDIS Report on voting 97/167/FDIS 97/169/RVD Full information on the voting for the approval of this standard can be found in the
41、 report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 62870:2015 4 IEC 62870:2015 IEC 2015 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on
42、the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains co
43、lours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. BS EN 62870:2015IEC 62870:2015 IEC 2015 5 INTRODUCTION With a few exceptions, aeronautical ground lighting is designed for series circuit technolo
44、gy operating with a constant current and a maximum input voltage of 5 000 V a.c. rms, including tolerances. The input voltage to the series circuit is constantly adjusted by the constant current regulator to maintain the series circuit current irrespective of the variations in the load. The properti
45、es and characteristics of the constant current regulators are provided in IEC 61822. Due to the structure of the series circuit, i.e. a series connection of all loads, the usual protective devices for personnel protection of an IT, TT or TN network cannot be applied. Aeronautical ground lighting is
46、defined as any light provided as an aid to air navigation and as such is subject to specific requirements with respect to its resilience, availability, and serviceability levels. Therefore, insulation faults in the series circuit are often tolerated, and do not lead to the automatic disconnection of
47、 the electrical supply to the series circuit. In view of the above IEC 61821 states that no work of any kind is normally permitted on live series circuits without first conducting a suitable and sufficient Risk Assessment and using appropriate protective equipment according to IEC 61821. The electri
48、cal characteristics of the constant current series circuits are often confused with those of IT, TT or TN networks, i.e. constant input voltage, equipment connected in parallel, and a load-dependent current. In practice, it is not always easy to assign rated voltages correctly to individual componen
49、ts of the series circuit or to determine possible touch voltages. In a constant current series circuits, the rated voltage of the equipment in the series circuit and the maximum touch voltage frequently exceed the normal mains input voltage. In a series circuit installation the series circuit input voltage is divided in proportion to the internal resistances of the various loads. The rated voltage, i.e. the voltage between the input lines of the equipment, is defined b
