SIST EN 62870:2016

SLOVENSKI STANDARD
SIST EN 62870:2016
01-marec-2016
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Electrical installations for lighting and beaconing of aerodromes - Safety secondary
circuits in series circuits - General safety requirements
Installations électriques pour l’éclairage et le balisage des aérodromes - Circuits
secondaires de sécurité dans des circuits série - Exigences générales de sécurité
Ta slovenski standard je istoveten z: EN 62870:2015
ICS:
29.140.50 Instalacijski sistemi za Lighting installation systems
razsvetljavo
93.120 *UDGQMDOHWDOLãþ Construction of airports
SIST EN 62870:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62870:2016

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SIST EN 62870:2016


EUROPEAN STANDARD EN 62870

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2015
ICS 29.140.50; 93.120

English Version
Electrical installations for lighting and beaconing of aerodromes -
Safety secondary circuits in series circuits - General safety
requirements
(IEC 62870:2015)
Installations électriques pour l'éclairage et le balisage des Elektrische Anlagen für Beleuchtung und Befeuerung von
aérodromes - Circuits secondaires de sécurité dans des Flugplätzen - Sicherheitssekundärkreise in
circuits série - Exigences générales de sécurité Serienstromkreisen - Allgemeine Sicherheitsfestlegungen
(IEC 62870:2015) (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 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 CENELEC 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 official 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, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC 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

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SIST EN 62870:2016
EN 62870:2015
European foreword
The text of document 97/167/FDIS, future edition 1 of IEC 62870, 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:
(dop) 2016-07-21
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2018-10-21
• latest date by which the national standards conflicting with
the document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. 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 notes 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).
2

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SIST EN 62870:2016
EN 62870:2015
Annex ZA
(normative)

Normative references to international publications
with their corresponding European 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) applies.
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/HD Year
IEC 60364-4-41 -  Low-voltage electrical installations - HD 60364-4-41 -
Part 4-41: Protection for safety -
Protection against electric shock
IEC 60417 -  Graphical symbols for use on equipment - -
IEC 60529 -  Degrees of protection provided by EN 60529 -
enclosures (IP Code)
IEC 61000-6-2 -  Electromagnetic compatibility (EMC) - EN 61000-6-2 -
Part 6-2: Generic standards - Immunity
for industrial environments
IEC 61000-6-4 -  Electromagnetic compatibility (EMC) - EN 61000-6-4 -
Part 6-4: Generic standards - Emission
standard for industrial environments
IEC 61140 -  Protection against electric shock - EN 61140 -
Common aspects for installation and
equipment
IEC 61558-2-4 -  Safety of transformers, reactors, power EN 61558-2-4 -
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
isolating transformers
IEC 61558-2-6 -  Safety of transformers, reactors, power EN 61558-2-6 -
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 transformers
3

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SIST EN 62870:2016
EN 62870:2015
Publication Year Title EN/HD Year
IEC 61821 -  Electrical installations for lighting and EN 61821 -
beaconing of aerodromes - Maintenance
of aeronautical ground lighting constant
current series circuits
IEC 61822 -  Electrical installations for lighting and EN 61822 -
beaconing of aerodromes - Constant
current regulators
IEC 61823 -  Electrical installations for lighting and EN 61823 -
beaconing of aerodromes - AGL series
transformers
CISPR 11 -  Industrial, scientific and medical EN 55011 -
equipment - Radio-frequency
disturbance characteristics - Limits and
methods of measurement
CISPR 22 -  Information technology equipment - EN 55022 -
Radio disturbance characteristics -
Limits and methods of measurement

4

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SIST EN 62870:2016




IEC 62870

®


Edition 1.0 2015-09




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Electrical installations for lighting and beaconing of aerodromes –Safety

secondary circuits in series circuits – General safety requirements




Installations électriques pour l’éclairage et le balisage des aérodromes –

Circuits secondaires de sécurité dans des circuits série – Exigences générales

de sécurité
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.140.50; 93.120 ISBN 978-2-8322-2896-8



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62870:2016
– 2 – IEC 62870:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 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 emission . 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 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 – 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

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SIST EN 62870:2016
IEC 62870:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRICAL INSTALLATIONS FOR
LIGHTING AND BEACONING 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 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 Available 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 organizations 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 technical 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 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 uniformity, 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 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 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 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 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 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 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 report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN 62870:2016
– 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 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 colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 62870:2016
IEC 62870:2015 © IEC 2015 – 5 –
INTRODUCTION
With a few exceptions, aeronautical ground lighting is designed for series circuit technology
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 properties 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 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 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 electrical 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 components 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 by the series circuit current that flows through the
equipment and its input impedance. Since input impedance depends on the equipment design
and the series circuit current is constant, the input voltage remains the same for each item of
equipment. As a result of the provision of current control in the series circuit the series circuit
input voltage is load-dependent and corresponds to the sum of all partial voltages in the
series circuit.
This is different to determining the maximum possible touch voltage to earth in a series
circuit. Since one or more earth faults, of varying resistance to earth, maybe present, the
touch voltage to earth may assume any value up to the maximum series circuit input voltage
depending on the location of the earth fault and the equipment installed in the series circuit.
Therefore when determining the dielectric strength against earth potential it is usual to take
the maximum series circuit input voltage. Such peculiarities of the series circuit have been
taken into account in the requirements for lamp systems in this standard.
Since there are only a few effective safety features available for personnel protection in series
circuit technology the protective measure “Safety extra low voltage (SELV)” and “Protective
extra low voltage (PELV)” is applied in this standard for the supply of lamp systems. This
measure is common practice and can resort to the application of well-known and accepted
methodology. The introduction of SELV/PELV in this type of application has been made
possible by the introduction of new i
...