prEN 50622:2013

SLOVENSKI STANDARD
oSIST prEN 50622:2013
01-januar-2014
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Lightning protection systems pure performance standard
Norme de performance pure des systèmes de protection contre la foudre
Ta slovenski standard je istoveten z: prEN 50622:2013
ICS:
91.120.40 =DãþLWDSUHGVWUHOR Lightning protection
oSIST prEN 50622:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 50622:2013
oSIST prEN 50622:2013
DRAFT
EUROPEAN STANDARD
prEN 50622
NORME EUROPÉENNE
September 2013
EUROPÄISCHE NORM
ICS
English version
Lightning protection systems pure performance standard

Norme de performance pure des To be completed
systèmes de protection contre la foudre

This draft European Standard is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2014-02-14.

It has been drawn up by CLC/TC 81X.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to
change without notice and shall not be referred to as a European Standard.

CENELEC
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

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Project: 23705 Ref. No. prEN 50622:2013 E

oSIST prEN 50622:2013
1 Contents
2 Foreword . 3
3 Introduction . 4
4 1 General . 4
5 1.1 Object . 4
6 1.2 Scope . 4
7 2 Normative references . 4
8 3 Terms and definitions . 4
9 4 Installations under monitoring . 6
10 4.1 Lightning ground flash density N . 6
g
11 4.2 Collection area A . 6
d
12 4.3 Location factor C . 6
d
13 4.4 Number of dangerous events N for a structure . 6
D
14 4.5 Total number of expected dangerous events N . 7
DT
15 5 Monitoring Degrees . 7
16 6 Book of installation . 7
17 7 Failures . 8
18 8 Performance . 9
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21 Foreword
22 This document (prEN 50622:2013) has been prepared by CLC/TC 81X "Lightning protection".
23 This document is currently submitted to the Enquiry.

oSIST prEN 50622:2013
24 Introduction
25 In April 2010, the Technical Bureau (BT) of CENELEC asked the European Lightning Protection group
26 (CLC/TC 81X) “to examine the possibility to establish a pure performance standard, independent from any
27 technology and enabling the development of existing and future technologies on lightning protection systems
28 and report back to BT” (D136/014).
29 In October 2011, BT approved by majority the New Work Item i.e. the future prEN 50622 “Lightning
30 protection systems pure performance standard” (D139/044).
31 The aim of this standard is to describe a method to know and document the performance of an LPS. Taking
32 into account that lightning phenomena cannot be fully reproduced in a laboratory and that testing in “field
33 sites” is not representative from a statistical point of view, the performance of a LPS can only be established
34 in real installations with a significant number of sites, representing the different climatic and geographical
35 conditions around the world.
36 This commitment from the BT is a unique opportunity to go a step forward in the scientific and technologic
37 developments in the field of lightning protection.
38 Only interception performance is considered in this document.
40 1 General
41 1.1 Object
43 The object of this standard is giving a method to measure the interception performance of lightning
44 protection systems when they are installed in real conditions.
45 1.2 Scope
47 This standard provides the requirements to evaluate the performance, in terms of lightning interception
48 attachment, of lightning protection systems (LPS) installed according to their reference standards or
49 specifications.
50 2 Normative references
51 This is a Pure Performance Standard and therefore no indications about material, sizes or installation
52 instructions are given. Nevertheless, the Lightning Protections Systems under monitoring should have been
53 designed and installed according to documents that shall be public and shall contain all the characteristics of
54 the LPS, such as installation instructions, materials, sizes and laboratory tests of the lightning protection
55 components.
56 3 Terms and definitions
57 For the purpose of this document, the following terms and definitions apply.
58 3.1
59 Lightning Protection System
60 LPS
61 system intended to intercept lightning flashes, conduct lightning current and disperse it into the earth thus
62 reducing physical damage caused by direct lightning flashes
63 3.2
64 Type of Lightning Protection Systems under monitoring
65 full set of characteristics of the Lightning Protection Systems which performance is being monitored
66 3.3
67 protected area
68 structure, object or open area that is under the protection of a lightning protection system and that should
69 therefore not be struck by lightning

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70 3.4
71 monitoring Degree
72 MD
73 number related to the information given by the set of measures taken for observing the performance of a
74 Lightning Protection System
75 3.5
76 failure
77 missed interception by LPS in a protected area
78 3.6
79 damage
80 puncture, masonry breakage, fire or flash mark that has been caused by a direct lightning strike
81 3.7
82 efficiency of a LPS
83 E
84 accepted percentage of flashovers for an installed LPS, that must be clearly defined in the standards or
85 specifications, indicating the type and characteristics of lightning flashes to which the protected area is
86 exposed
87 3.8
88 performance factor
89 α
90 value of the number of failures within monitored protected areas relative to the total amount of flashes
91 expected in those areas
92 3.9
93 flashover
94 …………………………………………………………….
...