EN 62858:2015
(Main)Lightning density based on lightning location systems (LLS) - General principles
Lightning density based on lightning location systems (LLS) - General principles
IEC 62858:2015 introduces and discusses all necessary measures to make reliable and homogeneous the values of NG obtained from LLS in various countries. Only parameters that are relevant to risk assessment are considered.
Blitzhäufigkeit basierend auf Blitzortungssystemen - Allgemeine Grundsätze
Densité de foudroiement basée sur des systèmes de localisation de la foudre (LLS) - Principes généraux
L'IEC 62858:2015 présente et évoque toutes les mesures nécessaires qui visent à rendre fiables et homogènes les valeurs de NG obtenues par les LLS dans différents pays. Seuls les paramètres essentiels à l'analyse du risque sont pris en compte.
Pogostost strele na osnovi sistemov za lokacijo strel (LLS) - Splošna načela
Ta evropski standard se uporablja za jadralna padala iz točke 2.1. Ta del standarda EN 926 določa zahteve in preskusne metode za ugotavljanje odpornosti jadralnega padala proti statičnim in dinamičnim obremenitvam ter določa prag minimalne trdnosti za njegovo kvalifikacijo.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2016
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Lightning density based on lightning location systems (LLS) - General principles
Densité de foudroiement basée sur des systèmes de localisation de la foudre (LLS) -
Principes généraux
Ta slovenski standard je istoveten z: EN 62858:2015
ICS:
91.120.40 =DãþLWDSUHGVWUHOR Lightning protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 62858
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2015
ICS 91.120.40; 29.020
English Version
Lightning density based on lightning location systems (LLS) -
General principles
(IEC 62858:2015)
Densité de foudroiement basée sur des systèmes de Blitzhäufigkeit basierend auf Blitzortungssystemen -
localisation de la foudre (LLS) - Principes généraux Allgemeine Grundsätze
(IEC 62858:2015) (IEC 62858:2015)
This European Standard was approved by CENELEC on 2015-09-09. 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 62858:2015 E
European foreword
The text of document 81/470/FDIS, future edition 1 of IEC 62858, prepared by IEC/TC 81, "Lightning
protection", was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
– latest date by which this document has to be (dop) 2016-06-09
implemented at national level
by publication of an identical
national standard or by endorsement
– latest date by which the national standards conflicting (dow) 2018-09-09
with this 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 62858:2015 was approved by CENELEC as a European
Standard without any modification.
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 62305-1 - Protection against lightning -- Part 1: General EN 62305-1 -
principles
IEC 62305-2 - Protection against lightning -- Part 2: Risk EN 62305-2 -
management
IEC 62858 ®
Edition 1.0 2015-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Lightning density based on lightning location systems (LLS) – General
principles
Densité de foudroiement basée sur des systèmes de localisation de la foudre
(LLS) – Principes généraux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS : 29.020, 91.120.40 ISBN 978-2-8322-2820-3
– 2 – IEC 62858:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 General requirements . 8
4.1 General . 8
4.2 Stroke-to-flash grouping . 9
4.3 Minimum observation periods . 9
4.4 Observation area . 9
4.5 Grid cell size . 9
4.6 Edge effect correction . 10
5 Validation of lightning location system performance characteristics . 10
Bibliography . 12
IEC 62858:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIGHTNING DENSITY BASED ON LIGHTNING LOCATION SYSTEMS (LLS) –
GENERAL PRINCIPLES
FOREWORD
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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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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 62858 has been prepared by IEC technical committee 81:
Lightning protection.
The text of this standard is based on the following documents:
FDIS Report on voting
81/470/FDIS 81/494/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.
– 4 – IEC 62858:2015 © 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.
IEC 62858:2015 © IEC 2015 – 5 –
INTRODUCTION
International standards for lightning protection (e.g. IEC 62305-2) provide methods for the
evaluation of the lightning risk on buildings and structures.
The lightning ground flash density N , defined as the mean number of lightning flashes to
G
ground per square kilometer per year is the primary input parameter to perform such an
evaluation.
In many areas of the world N is derived from data provided by lightning location systems
G
(LLS), but no common rule exists defining requirements either for their performance or for the
elaboration of the measured data.
– 6 – IEC 62858:2015 © IEC 2015
LIGHTNING DENSITY BASED ON LIGHTNING LOCATION SYSTEMS (LLS) –
GENERAL PRINCIPLES
1 Scope
This International Standard introduces and discusses all necessary measures to make
reliable and homogeneous the values of N obtained from LLS in various countries. Only
G
parameters that are relevant to risk assessment are considered.
2 Normative references
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.
IEC 62305-1, Protection against lightning – Part 1: General principles
IEC 62305-2, Protection against lightning – Part 2: Risk management
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62305-1 and
IEC 62305-2, as well as the following, apply.
3.1.1
cloud-to-ground lightning
CG
discharge that is comprised of one or more cloud-to-ground lightning strokes that propagate
from cloud to ground or vice versa and lead to a net transfer of charge between cloud and
ground
Note 1 to entry: This note applies to the French language only.
3.1.2
cloud lightning
IC
discharge occurring within or among thunderclouds (intracloud), or between thunderclouds
(intercloud), or between cloud and air, without a ground termination
Note 1 to entry: This note applies to the French language only.
3.1.3
first return stroke
first stroke to ground of a cloud-to-ground lightning discharge
Note 1 to entry: The stepped leader and attachment process precede the first return stroke.
3.1.4
subsequent stroke
subsequent stroke to ground that follows a previous (return) stroke in the same flash
...
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