IEC 61347-2-12:2005
(Main)Lamp controlgear - Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for discharge lamps (excluding fluorescent lamps)
Lamp controlgear - Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for discharge lamps (excluding fluorescent lamps)
This part of IEC 61347 specifies particular general and safety requirements for d.c. or a.c. supplied electronic ballasts. The supply comprises a.c. voltages up to 1000 V at 50 Hz/60 Hz. The type of ballast is an convertor that may contain igniting and stabilising elements for operation of a discharge lamp at d.c. or at a frequency that can deviate from the supply frequency. The lamps associated with the ballast are specified in IEC 60188 (High pressure mercury vapour lamps), IEC 60192 (Low pressure sodium vapour lamps), IEC 60662 (High pressure sodium vapour lamps), IEC 61167 (Metal halide lamps) and else for general purpose lighting. Ballasts for fluorescent lamps and for lamps for special applications like for theatre and for vehicles are excluded.
Appareillages de lampes - Partie 2-12: Exigences particulières pour les ballasts électroniques alimentés en courant continu ou alternatif pour lampes à décharge (à l'exclusion des lampes fluorescentes)
La présente partie de la CEI 61347 spécifie les exigences particulières et les exigences de sécurité pour les ballasts électroniques alimentés en courant continu ou alternatif. L'alimentation comprend les tensions alternatives jusqu'à 1 000 V, de fréquence égale à 50 Hz ou 60 Hz. Le type de ballast est un inverseur qui peut inclure des moyens d'amorçage et de stabilisation pour le fonctionnement d'une lampe à décharge en courant continu ou à une fréquence qui peut différer de la fréquence du réseau d'alimentation. Les lampes associées avec le ballast sont spécifiées dans la CEI 60188 (Lampes à vapeur de mercure à haute pression), la CEI 60192 (Lampes à vapeur de sodium à basse pression), la CEI 60662 (Lampes à vapeur de sodium à haute pression), la CEI 61167 (Lampes aux halogénures métalliques), et autres pour l'éclairage général. Les ballasts pour les lampes fluorescentes et pour les lampes destinées à des applications spéciales comme pour le théâtre et les véhicules sont exclus.
General Information
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Standards Content (Sample)
NORME CEI
INTERNATIONALE
IEC
61347-2-12
INTERNATIONAL
Première édition
STANDARD
First edition
2005-06
Appareillages de lampes –
Partie 2-12:
Exigences particulières pour les ballasts
électroniques alimentés en courant continu
ou alternatif pour lampes à décharge
(à l'exclusion des lampes fluorescentes)
Lamp controlgear –
Part 2-12:
Particular requirements for d.c. or a.c. supplied
electronic ballasts for discharge lamps
(excluding fluorescent lamps)
Numéro de référence
Reference number
CEI/IEC 61347-2-12:2005
Numérotation des publications Publication numbering
Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are
sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For
devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.
Editions consolidées Consolidated editions
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CEI incorporant les amendements sont disponibles. Par publications. For example, edition numbers 1.0, 1.1
exemple, les numéros d’édition 1.0, 1.1 et 1.2 indiquent and 1.2 refer, respectively, to the base publication,
respectivement la publication de base, la publication de the base publication incorporating amendment 1 and
base incorporant l’amendement 1, et la publication de the base publication incorporating amendments 1
base incorporant les amendements 1 et 2. and 2.
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.
NORME CEI
INTERNATIONALE
IEC
61347-2-12
INTERNATIONAL
Première édition
STANDARD
First edition
2005-06
Appareillages de lampes –
Partie 2-12:
Exigences particulières pour les ballasts
électroniques alimentés en courant continu
ou alternatif pour lampes à décharge
(à l'exclusion des lampes fluorescentes)
Lamp controlgear –
Part 2-12:
Particular requirements for d.c. or a.c. supplied
electronic ballasts for discharge lamps
(excluding fluorescent lamps)
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
– 2 – 61347-2-12 CEI:2005
SOMMAIRE
AVANT-PROPOS .4
INTRODUCTION.8
1 Domaine d'application.10
2 Références normatives .10
3 Définitions .10
4 Exigences générales.12
5 Généralités sur les essais.12
6 Classification .12
7 Marquage .14
8 Bornes.14
9 Dispositions en vue de la mise à la terre .14
10 Protection contre les contacts accidentels avec les parties actives .16
11 Résistance à l'humidité et isolement .16
12 Rigidité diélectrique .16
13 Essais d'endurance thermique des enroulements .16
14 Conditions de défaut.16
15 Protection des composants associés.16
16 Tension d’amorçage .16
17 Conditions anormales .18
18 Construction .22
19 Lignes de fuite et distance dans l'air .22
20 Vis, parties transportant le courant et connexions.22
21 Résistance à la chaleur, au feu et au cheminement.22
22 Résistance à la corrosion.22
Annexe A (normative) Essai ayant pour but de déterminer si une partie conductrice est
une partie active pouvant entraîner un choc électrique.24
Annexe B (normative) Exigences particulières pour les appareillages de lampes à
protection thermique .26
Annexe C (normative) Exigences particulières pour les appareillages de lampes
électroniques avec dispositifs de protection contre la surchauffe .28
Annexe D (normative) Exigences pour les essais d'échauffement des appareillages de
lampes à protection thermique .30
Annexe E (normative) Usage de constantes S différentes de 4 500 pour les essais t .32
w
Annexe F (normative) Enceinte à l'abri des courants d'air .34
Annexe G (normative) Explications concernant le calcul des valeurs de tension
d'impulsion.36
Annexe H (normative) Essais .38
Annexe I (normative) Précautions à observer lors des mesures avec des éclateurs
sphériques .40
Bibliographie .42
61347-2-12 IEC:2005 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Definitions .11
4 General requirements .13
5 General notes on tests .13
6 Classification.13
7 Marking .15
8 Terminals .15
9 Provisions for earthing.15
10 Protection against accidental contact with live parts .17
11 Moisture resistance and insulation.17
12 Electric strength .17
13 Thermal endurance test for windings .17
14 Fault conditions .17
15 Protection of associated components .17
16 Ignition voltage.17
17 Abnormal conditions .19
18 Construction .23
19 Creepage distances and clearances .23
20 Screws, current-carrying parts and connections.23
21 Resistance to heat, fire and tracking.23
22 Resistance to corrosion .23
Annex A (normative) Test to establish whether a conductive part is a live part which
may cause an electric shock .25
Annex B (normative) Particular requirements for thermally protected lamp controlgear .27
Annex C (normative) Particular requirements for electronic lamp controlgear with
means of protection against overheating.29
Annex D (normative) Information for carrying out the heating tests of thermally
protected lamp controlgear .31
Annex E (normative) The use of constants S other than 4 500 in t tests.33
w
Annex F (normative) Draught-proof enclosure.35
Annex G (normative) Explanation of the derivation of the values of pulse voltages .37
Annex H (normative) Tests .39
Annex I (normative) Precautions to be observed when measuring with spherical spark
gaps .41
Bibliography.43
– 4 – 61347-2-12 CEI:2005
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILLAGES DE LAMPES –
Partie 2-12: Exigences particulières pour les
ballasts électroniques alimentés en courant continu ou alternatif
pour lampes à décharge (à l’exclusion des lampes fluorescentes)
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des comités d'études,
aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
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travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
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intéressés sont représentés dans chaque comité d’études.
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l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
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mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
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5) La CEI n’a prévu aucune procédure de marquage valant indication d’approbation et n'engage pas sa
responsabilité pour les équipements déclarés conformes à une de ses Publications.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
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l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La Norme internationale CEI 61347-2-12 à été établie par le sous-comité 34C: Appareils
auxiliaires pour lampes, du comité d'études 34 de la CEI: Lampes et équipements associés.
Le texte de cette norme est issu des documents suivants:
FDIS Rapport de vote
34C/683/FDIS 34C/687/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
61347-2-12 IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LAMP CONTROLGEAR –
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic
ballasts for discharge lamps (excluding fluorescent lamps)
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 provides no marking procedure to indicate its approval and 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 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 61347-2-12 has been prepared by subcommittee 34C: Auxiliaries
for lamps, of IEC technical committee 34: Lamps and related equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
34C/683/FDIS 34C/687/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.
– 6 – 61347-2-12 CEI:2005
Cette norme doit être utilisée conjointement avec la CEI 61347-1. Elle a été établie sur la base
de la première édition (2000) de cette norme.
La présente partie 2 complète ou modifie les articles correspondants de la CEI 61347-1 de
façon à la transformer en norme CEI: Exigences particulières pour les ballasts électroniques
alimentés en courant continu ou alternatif pour lampes à décharge (à l’exclusion des lampes
fluorescentes.
NOTE Dans la présente norme, les caractères d’imprimerie suivants sont employés:
− exigences proprement dites: caractères romains ;
− modalités d’essais: caractères italiques;
− notes: petits caractères romains.
La CEI 61347 comprend les parties suivantes, présentées sous le titre général Appareillages de
lampes:
Partie 1: Prescriptions générales et prescriptions de sécurité
Partie 2-1: Prescriptions particulières pour les dispositifs d'amorçage (autres que starters à
lueur)
Partie 2-2: Prescriptions particulières pour les convertisseurs abaisseurs électroniques
alimentés en courant continu ou alternatif pour lampes à incandescence
Partie 2-3: Prescriptions particulières pour les ballasts électroniques alimentés en courant
alternatif pour lampes fluorescentes
Partie 2-4: Prescriptions particulières pour les ballasts électroniques alimentés en courant
continu pour l'éclairage général
Partie 2-5: Prescriptions particulières pour les ballasts électroniques alimentés en courant
continu pour l'éclairage des transports en commun
Partie 2-6: Prescriptions particulières pour les ballasts électroniques alimentés en courant
continu pour l'éclairage des aéronefs
Partie 2-7: Prescriptions particulières pour les ballasts électroniques alimentés en courant
continu pour l'éclairage de secours
Partie 2-8: Prescriptions particulières pour les ballasts pour lampes fluorescentes
Partie 2-9: Prescriptions particulières pour les ballasts pour lampes à décharge (à l'exclusion
des lampes fluorescentes)
Partie 2-10: Prescriptions particulières pour onduleurs et convertisseurs électroniques
destinés à l'alimentation en haute fréquence des lampes tubulaires à décharge à
démarrage à froid (tubes néon)
Partie 2-11: Prescriptions particulières pour circuits électroniques divers utilisés avec les
luminaires
Partie 2-12: Exigences particulières pour les ballasts électroniques alimentés en courant
continu ou alternatif pour lampes à décharge (à l’exclusion des lampes
fluorescentes)
Partie 2-13: Exigences particulières pour les appareillages électroniques alimentés en courant
1)
continu ou alternatif pour les modules de DEL
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant la date de
maintenance indiquée sur le site web de la CEI sous "http://webstore.iec.ch" dans les données
relatives à la publication recherchée. A cette date, la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
___________
1)
A publier.
61347-2-12 IEC:2005 – 7 –
This standard shall be used in conjunction with IEC 61347-1. It was established on the basis
of the first (2000) edition of that standard.
This part 2 supplements or modifies the corresponding clauses in IEC 61347-1, so as to
convert that publication into the IEC Standard: Particular requirements for d.c. or a.c. supplied
electronic ballasts for discharge lamps (excluding fluorescent lamps).
NOTE In this standard, the following print types are used:
− requirements: in roman type;
− test specifications: in italic type;
− notes: in small roman type.
IEC 61347-2 consists of the following parts, under the general title Lamp controlgear:
Part 1: General and safety requirements
Part 2-1: Particular requirements for starting devices (other than glow starters)
Part 2-2: Particular requirements for d.c. or a.c. supplied electronic step-down convertors
for filament lamps
Part 2-3: Particular requirements for a.c. supplied electronic ballasts for fluorescent lamps
Part 2-4: Particular requirements for d.c. supplied electronic ballasts for general lighting
Part 2-5: Particular requirements for d.c. supplied electronic ballasts for public transport
lighting
Part 2-6: Particular requirements for d.c. supplied electronic ballasts for aircraft lighting
Part 2-7: Particular requirements for d.c. supplied electronic ballasts for emergency lighting
Part 2-8: Particular requirements for ballasts for fluorescent lamps
Part 2-9: Particular requirements for ballasts for discharge lamps (excluding fluorescent
lamps)
Part 2-10: Particular requirements for electronic invertors and convertors for high-frequency
operation of cold start tubular discharge lamps (neon tubes)
Part 2-11: Particular requirements for miscellaneous electronic circuits used with luminaires
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for discharge
lamps (excluding fluorescent lamps)
Part 2-13: Particular requirements for d.c. or a.c. supplied electronic controlgear for LED
1)
modules
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
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
———————
1)
To be published.
– 8 – 61347-2-12 CEI:2005
INTRODUCTION
La présente norme, et les autres parties qui composent la CEI 61347-2, en faisant référence à
un quelconque des articles de la CEI 61347-1, spécifient le domaine dans lequel cet article est
applicable et l'ordre dans lequel il convient d’effectuer les essais; elles incluent aussi des
exigences supplémentaires, si nécessaire. Toutes les parties composant la CEI 61347-2 sont
autonomes et, par conséquent, ne contiennent pas de références les unes aux autres.
Quand les exigences de l'un quelconque des articles de la CEI 61347-1 sont citées en réfé-
rence dans la présente partie par la phrase «Les exigences de l'article n de la CEI 61347-1
s'appliquent», cette phrase s'interprète comme signifiant que toutes les exigences de cet
article de la partie 1 s'appliquent, excepté celles qui d'évidence ne s'appliquent pas au type
particulier d'appareillage de lampe considéré dans cette partie spécifique de la CEI 61347-2.
61347-2-12 IEC:2005 – 9 –
INTRODUCTION
This standard, and the parts which make up IEC 61347-1, in referring to any of the clauses of
IEC 61347-1 specify the extent to which such a clause is applicable and the order in which the
tests are to be performed; they also include additional requirements as necessary. All parts
which make up IEC 61347-2 are self-contained and therefore do not include references to
each other.
Where the requirements of any of the clauses of IEC 61347-1 are referred to in this standard
by the phrase “The requirements of Clause n of IEC 61347-1 apply, this phrase is interpreted
as meaning that all requirements of the clause in question of Part 1 apply, except any which
are clearly inapplicable to the specific type of lamp controlgear covered by this particular part
of IEC 61347-2.
– 10 – 61347-2-12 CEI:2005
APPAREILLAGES DE LAMPES –
Partie 2-12: Exigences particulières pour les
ballasts électroniques alimentés en courant continu ou alternatif
pour lampes à décharge (à l’exclusion des lampes fluorescentes)
1 Domaine d'application
La présente partie de la CEI 61347 spécifie les exigences particulières et les exigences de
sécurité pour les ballasts électroniques alimentés en courant continu ou alternatif.
L’alimentation comprend les tensions alternatives jusqu'à 1 000 V, de fréquence égale à 50 Hz
ou 60 Hz. Le type de ballast est un inverseur qui peut inclure des moyens d’amorçage et de
stabilisation pour le fonctionnement d’une lampe à décharge en courant continu ou à une
fréquence qui peut différer de la fréquence du réseau d'alimentation. Les lampes associées
avec le ballast sont spécifiées dans la CEI 60188 (Lampes à vapeur de mercure à haute
pression), la CEI 60192 (Lampes à vapeur de sodium à basse pression), la CEI 60662
(Lampes à vapeur de sodium à haute pression), la CEI 61167 (Lampes aux halogénures
métalliques), et autres pour l’éc
...
IEC 61347-2-12 ®
Edition 1.1 2010-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Lamp controlgear –
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for
discharge lamps (excluding fluorescent lamps)
Appareillages de lampes –
Partie 2-12: Exigences particulières pour les ballasts électroniques alimentés en
courant continu ou alternatif pour lampes à décharge (à l'exclusion des lampes
fluorescentes)
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IEC 61347-2-12 ®
Edition 1.1 2010-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Lamp controlgear –
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for
discharge lamps (excluding fluorescent lamps)
Appareillages de lampes –
Partie 2-12: Exigences particulières pour les ballasts électroniques alimentés en
courant continu ou alternatif pour lampes à décharge (à l'exclusion des lampes
fluorescentes)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99 ISBN 978-2-8891-2233-2
– 2 – 61347-2-12 Ó IEC:2005+A1:2010
CONTENTS
FOREW ORD . 3
INTRODUCTION . 6
1 Sc o pe . 7
2 Normative references . 7
3 Definitions . 7
4 General requirements . 8
5 General notes on tests . 8
6 Classification . 8
7 Marking . 9
8 Terminals . 9
9 Provisions for earthing . 9
10 Protection against accidental contact with live parts . 10
11 Moisture resistance and insulation. 10
12 Electric strength . 10
13 Thermal endurance test for windings . 10
14 Fault conditions . 10
15 Protection of associated components . 10
16 Ignition voltage . 10
17 Abnormal conditions . 11
18 Construction . 15
19 Creepage distances and clearances . 15
20 Screws, current-carrying parts and connections . 15
21 Resistance to heat, fire and tracking . 15
22 Resistance to corrosion . 15
Annex A (normative) Test to establish whether a conductive part is a live part which
may cause an electric shock . 16
Annex B (normative) Particular requirements for thermally protected lamp controlgear . 17
Annex C (normative) Particular requirements for electronic lamp controlgear with
means of protection against overheating . 18
Annex D (normative) Information for carrying out the heating tests of thermally
protected lamp controlgear . 19
Annex E (normative) The use of constants S other than 4 500 in t tests. 20
w
Annex F (normative) Draught-proof enclosure. 21
Annex G (normative) Explanation of the derivation of the values of pulse voltages . 22
Annex H (normative) Tests . 23
Annex I (normative) Precautions to be observed when measuring with spherical spark
gaps. 24
Bibliography . 25
61347-2-12 Ó IEC:2005+A1:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LAMP CONTROLGEAR –
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic
ballasts for discharge lamps (excluding fluorescent lamps)
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.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61347-2-12 edition 1.1 contains the first edition (2005) [documents 34C/683/FDIS and
34C/687/RVD] and its amendment 1 (2010) [documents 34C/898/CDV and 34C/933/RVC].
A vertical line in the margin shows where the base publication has been modified by
amendment 1. Additions and deletions are displayed in red, with deletions being struck
through.
– 4 – 61347-2-12 Ó IEC:2005+A1:2010
International Standard IEC 61347-2-12 has been prepared by subcommittee 34C: Auxiliaries
for lamps, of IEC technical committee 34: Lamps and related equipment.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This standard shall be used in conjunction with IEC 61347-1. It was established on the basis
of the first (2000) edition of that standard.
This part 2 supplements or modifies the corresponding clauses in IEC 61347-1, so as to
convert that publication into the IEC Standard: Particular requirements for d.c. or a.c. supplied
electronic ballasts for discharge lamps (excluding fluorescent lamps).
NOTE In this standard, the following print types are used:
- requirements: in roman type;
- test specifications: in italic type;
- notes: in small roman type.
IEC 61347-2 consists of the following parts, under the general title Lamp controlgear:
Part 1: General and safety requirements
Part 2-1: Particular requirements for starting devices (other than glow starters)
Part 2-2: Particular requirements for d.c. or a.c. supplied electronic step-down convertors
for filament lamps
Part 2-3: Particular requirements for a.c. supplied electronic ballasts for fluorescent lamps
Part 2-4: Particular requirements for d.c. supplied electronic ballasts for general lighting
Part 2-5: Particular requirements for d.c. supplied electronic ballasts for public transport
lighting
Part 2-6: Particular requirements for d.c. supplied electronic ballasts for aircraft lighting
Part 2-7: Particular requirements for d.c. supplied electronic ballasts for emergency lighting
Part 2-8: Particular requirements for ballasts for fluorescent lamps
Part 2-9: Particular requirements for ballasts for discharge lamps (excluding fluorescent
lamps)
Part 2-10: Particular requirements for electronic invertors and convertors for high-frequency
operation of cold start tubular discharge lamps (neon tubes)
Part 2-11: Particular requirements for miscellaneous electronic circuits used with luminaires
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic ballasts for discharge
lamps (excluding fluorescent lamps)
Part 2-13: Particular requirements for d.c. or a.c. supplied electronic controlgear for LED
1)
modules
———————
1)
To be published.
61347-2-12 Ó IEC:2005+A1:2010 – 5 –
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability 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
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 publication using a colour printer.
– 6 – 61347-2-12 Ó IEC:2005+A1:2010
INTRODUCTION
This standard, and the parts which make up IEC 61347-1, in referring to any of the clauses of
IEC 61347-1 specify the extent to which such a clause is applicable and the order in which the
tests are to be performed; they also include additional requirements as necessary. All parts
which make up IEC 61347-2 are self-contained and therefore do not include references to
each other.
Where the requirements of any of the clauses of IEC 61347-1 are referred to in this standard
by the phrase “The requirements of Clause n of IEC 61347-1 apply, this phrase is interpreted
as meaning that all requirements of the clause in question of Part 1 apply, except any which
are clearly inapplicable to the specific type of lamp controlgear covered by this particular part
of IEC 61347-2.
61347-2-12 Ó IEC:2005+A1:2010 – 7 –
LAMP CONTROLGEAR –
Part 2-12: Particular requirements for d.c. or a.c. supplied electronic
ballasts for discharge lamps (excluding fluorescent lamps)
1 Scope
This part of IEC 61347 specifies particular general and safety requirements for d.c. or a.c.
supplied electronic ballasts. The supply comprises a.c. voltages up to 1000 V at 50 Hz/60 Hz.
The type of ballast is an convertor that may contain igniting and stabilising elements for
operation of a discharge lamp at d.c. or at a frequency that can deviate from the supply
frequency. The lamps associated with the ballast are specified in IEC 60188 (High pressure
mercury vapour lamps), IEC 60192 (Low pressure sodium vapour lamps), IEC 60662 (High
pressure sodium vapour lamps), IEC 61167 (Metal halide lamps) and else for general purpose
lighting. Ballasts for fluorescent lamps and for lamps for special applications like for theatre
and for vehicles are excluded.
2 Normative references
For the purpose of this part of IEC 61347, the normative references given in Clause 2 of
IEC 61347-1 apply together with the following:
IEC 60052:2002, Voltage measurement by means of standard air gaps
2)
IEC 60417-DB , Graphical symbols for use on equipment
IEC 61347-1, Lamp controlgear – Part 1: General and safety requirements
3 Definitions
For the purpose of this part of IEC 61347, the definitions given in Cause 3 of IEC 61347-1
apply together with the following:
3.1
output power
value of the mean power intended to be provided by an electronic ballast
3.2
output terminals
ballast terminals, intended to be connected to the HID lamp
NOTE This terminal is not understood as a terminal allowing for intermediate operation of e.g. tungsten halogen
lamps.
———————
2)
“DB” refers to the IEC on-line database.
– 8 – 61347-2-12 Ó IEC:2005+A1:2010
3.3
ignition voltage
U
p
highest value of the voltage generated between the output terminals
NOTE 1 Basically, the following types of pulses are comprised:
a) continuous r.m.s. working voltage with superimposed non-sinusoidal single pulse;
b) continuous sinusoidal pulse voltage;
c) continuous sinusoidal pulse voltage with superimposed non-sinusoidal single pulse;
d) continuous square wave voltage with ringing sinusoidal voltage at each transition.
NOTE 2 The term ‘pulse’ is to be distinguished from the term ‘surge’ which refers to transients occurring in
electrical equipment or networks in service.
3.4
spherical spark gap
two metal spheres of the same nominal diameter arranged at a specified distance and used
under specified conditions for the measurement of peak voltages in excess of 15 kV
4 General requirements
The requirements of Clause 4 of IEC 61347-1 apply.
5 General notes on tests
The requirements of Clause 5 of IEC 61347-1 apply together with the following additional
requirements:
5.1 Number of specimens
The following number of specimens shall be submitted for testing:
- one unit for the tests of Clauses 6 to 12 and 15 to 22;
- one unit for the tests of Clause 14: fault conditions (additional units or components, where
necessary, may be required in consultation with the manufacturer).
5.2 Void.
6 Classification
The requirements of Clause 6 of IEC 61347-1 apply together with the following additional
requirement:
6.1 Ignition voltage
Ballasts are classified according to ignition voltage:
- up to and including 5 kV;
- greater than 5 kV, and up to and including 10 kV;
- greater than 10 kV, and up to and including 100 kV.
6.2 Void.
61347-2-12 Ó IEC:2005+A1:2010 – 9 –
7 Marking
Ballasts which form an integral part of the luminaire need not be marked. The requirements of
7.2 of IEC 61347-1 apply.
7.1 Mandatory markings
Ballasts, other than integral ballasts, shall be clearly and durably marked, in accordance with
the requirements of 7.1 of IEC 61347-1, with the following mandatory markings:
– Items a), b), c), d), e), f), k) and l) of 7.1 of IEC 61347-1;
– for controllable ballasts, the control terminals shall be identified;
– output terminals shall be identified as such;
– the value of the ignition voltage (16), if it exceeds 1 500 V. Connections having this
voltage shall be marked; for ballasts with an ignition voltage over 5 kV, this marking shall
be a flash symbol, see IEC 60417-5036 (DB:2002-10);
– a declaration of the maximum working voltage (r.m.s.) according to 15.1 between
· output terminals;
· any output terminal and earth, if applicable.
The specification of each of these values shall be given in the manufacturer’s description in
steps of 10 V when the working voltage is equal to or less than 500 V, and in steps of 50 V
when the working voltage is higher than 500 V.
The highest of the specified voltage values shall be marked on the ballast as “output working
voltage = xx V” (or “U-OUT = xx V).
7.2 Information to be provided, if applicable
In addition to the above mandatory markings, the following information, if applicable, shall be
given either on the ballast, if declared below, or be made available in the manufacturer’s
catalogue or the like.
Items h),i), j), m) and n) of 7.1 of IEC 61347-1 together with:
– in the case of a ballast consisting of more than one separate unit, all parts have to be
marked such that the matching components can be identified clearly;
– warning to the installer to prevent overheating of ballasts and associated components in a
multi ballast installation mounted in poles, boxes etc.;
– an indication of the time limitation of ignition voltage;
– If the control terminal is not basic insulated from the mains, this shall be indicated on the
ballast.
8 Terminals
The requirements of Clause 8 of IEC 61347-1 apply.
9 Provisions for earthing
The requirements of Clause 9 of IEC 61347-1 apply.
– 10 – 61347-2-12 Ó IEC:2005+A1:2010
10 Protection against accidental contact with live parts
The requirements of Clause 10 of IEC 61347-1 apply.
11 Moisture resistance and insulation
The requirements of Clause 11 of IEC 61347-1 apply.
12 Electric strength
The requirements of Clause 12 of IEC 61347-1 apply.
13 Thermal endurance test for windings
The requirements of Clause 13 of IEC 61347-1 do not apply.
14 Fault conditions
The requirements of Clause 14 of IEC 61347-1 apply.
15 Protection of associated components
Output voltages measured shall be those between all output terminals and any output terminal
and earth.
15.1 Under normal and abnormal operating conditions none of these output voltages shall
exceed the working voltage as declared by the manufacturer. The ignition phase being
defined by switch on or beginning of the ignition process up to the time limit as given in
Clause 16 is exempted.
15.2 Under normal and abnormal (see Clause 17) conditions, if a time limitation is declared
for ignition, it shall not be exceeded.
15.3 For controllable electronic ballasts, the control terminal shall be isolated from the mains
circuit by an insulation at least equal to basic insulation unless otherwise indicated, see 7.2.
16 Ignition voltage
16.1 Instruments
Measurements are made by oscilloscope or electrostatic voltmeters for ignition voltages up to
100 kV.
NOTE A typical electrostatic voltmeter is prescribed in Figure 1 of IEC 61347-2-1.
Many electronic ballasts cannot have grounded outputs. In case a differential probe has to be used, it may have an
impedance greater than 1 MΩ at up to 10 kHz. For higher frequencies f the probe must have an impedance Z
greater than a 15 pF capacitor (C) based on the equation
Z = 1/(2π f C)
The cut-off frequency should be ≥30 MHz at –3dB.
61347-2-12 Ó IEC:2005+A1:2010 – 11 –
Above 15 kV a spherical spark gap can be used, using the procedure based on that given in
IEC 60052, and taking note of Annex I.
In case of doubt, the measurement with the electrostatic voltmeter shall be the reference
method.
16.2 Ignition voltage limits
The maximum value of the ignition voltage shall not exceed 5 kV when operated at the rated
voltage and with a load capacitance of 20 pF (including the capacitance of the probe), or
using the circuit shown in Figure 1 of IEC 61347-2-1 for either positive or negative pulses,
taking into account however, the maximum ignition voltage specified in the relevant lamp data
sheets.
If not otherwise stated on the relevant lamp data sheets, for electronic ballasts with ignition
voltages over 5 kV, the maximum value shall not exceed 1,3 x U declared by the
p
manufacturer when operated at the rated supply voltage and with a load capacitance of 20 pF.
NOTE In some countries, the ignition voltage is restricted to 4 kV.
16.3 Ignition time cut-out
Electronic ballasts equipped with cut-outs shall be of such a construction that, in the case of
non-igniting lamps, the cut-out interrupts at least the production of the ignition voltage.
After the cut-out has interrupted the circuit, the generation of the ignition voltage is allowed
either after disconnecting and reconnecting the ballast to the supply or by control signal.
Electronic ballasts with ignition voltages over 5 kV shall be provided with a cut-out for igniting.
Time to cut-out is limited:
– for ignition voltages 5 to 10 kV to 60 s,
– for ignition voltages > 10 kV a) to 3 s, or
b) to 30 s, if declared in the manufacturer’s literature.
The cut-out time of 60 s for ignition voltage from 5 kV to 10 kV can be extended, depending
on the lamp type, up to a period of 20 min within which the combined intervals of ignition
attempts add up to 60 s, provided it is evident for the maintenance service staff that the
controlgear is still trying to ignite.
17 Abnormal conditions
The ballast shall not impair safety when operated under abnormal conditions at any voltage
between 90 % and 110 % of rated supply voltage. The range of rated supply voltage may be
declared differently by the manufacturer.
Compliance is checked by the following test.
Each of the following conditions shall be applied with the ballast operating to the
manufacturer’s instructions (including a heat sink, if specified) for 1 h:
– 12 – 61347-2-12 Ó IEC:2005+A1:2010
a) lamp is not inserted or does not ignite;
b) burner leaks;
c) the lamp operates, but rectifies.
Condition a) is tested with open output.
Condition b) is tested with circuit in Figure 1 (see below).
D.U.T.
D
n
Key
D.U.T.: Device under test
D : circuit of some diodes in series, and anti-parallel to them, the same number of diodes in series which
n
yields a voltage of 10 V to 15 V across them.
Figure 1 – Circuit to test whether a ballast can withstand a leaking burner
Condition c) is tested with circuit in Figure 2 (see below).
Both current directions have to be checked: ballast terminal 1 with circuit wire 1 and ballast
terminal 1 with circuit wire 2.
D.U.T.
R
Key
D.U.T.: Device under test
D: 100 A, 600 V
R1: 0…200 Ω (wattage rating of the resistor to be at least ½ lamp wattage)
Figure 2 – Circuit to test whether a ballast can withstand rectification
61347-2-12 Ó IEC:2005+A1:2010 – 13 –
During and at the end of the tests specified under items a) to c), the ballast shall show no
defect impairing safety nor shall any flame, molten material, flammable gases or smoke be
produced.
The ballast shall not impair safety when operated under abnormal conditions at any voltage
between 90 % and 110 % of rated supply voltage or range of rated supply voltage declared by
the manufacturer.
Compliance is checked by the following test.
Each of the following conditions shall be applied with the ballast operating to the
manufacturer’s instructions (including a heat sink, if specified) for 1 h:
a) lamp is not inserted or does not ignite;
b) burner leaks;
c) the lamp operates, but rectifies.
Condition a) is tested with open output.
Condition b) is tested with circuit in Figure 1 (see below).
DUT
a
D
n
IEC 1255/10
Key
a supply
DUT device under test
D circuit of some diodes in series, and anti-parallel to them, the same number of diodes in series which
n
yields a voltage of 10 V to 15 V across them.
Figure 1 – Circuit to test whether ballast can withstand a leaking burner
Condition c) is tested with circuit in Figure 2 (see below).
The lamp in the circuit is replaced by test circuit as shown in Figure 2.
Both current directions have to be checked: ballast terminal 1 with circuit wire 1 and ballast
terminal 1 with circuit wire 2.
The control gear is stabilised at the ambient temperature of the draught-proof enclosure
between 10 °C and 30 °C.
The resistor R has to be chosen such that the electrical operating conditions are the same as
with the lamp. An appropriate resistance value can be found by calculation:
R = U / P
.
1 lamp magn lamp magn
– 14 – 61347-2-12 Ó IEC:2005+A1:2010
where
U is the lamp voltage in magnetic ballast operation;
.
lamp magn
P . is the lamp wattage in magnetic ballast operation;
lamp magn
U and P are taken from the relevant lamp standard sheet as long as
. .
lamp magn lamp magn
electronic lamp operation data are not available from the lamp manufacturer.
NOTE R changes as a function of lamp type for the same lamp wattage.
The test is commenced by varying the resistor R to adjust the current to a value equal to
twice the normal lamp current; when this is reached, no further adjustment of R is made.
If after 1 h the internal protection of the control gear has not operated, the resistor R shall be
adjusted to increase the current up to three times maximum the normal lamp current.
If the internal protection of the control gear operates before the current reaches a value equal
to twice the normal lamp current, the control gear is loaded, varying the resistance R , by a
current equal to 0,95 times the value of the lowest current which causes the protective device
to operate. The lowest current causing the protective device to operate is determined by
initially operating the control gear at the normal lamp current and gradually increasing the
output current in steps of 2 % (each step is maintained until steady condition is achieved) until
the protective device operates. However, the current shall not be adjusted above a value of 3
times the normal lamp current.
The steady state condition is considered to have been reached when the difference between
two consecutive readings of temperature rise over the ambient taken at half hour interval has
not exceeded 1 K.
D
a DUT
R
R
IEC 1256/10
Key
a supply
DUT device under test
D 100 A, 600 V
R 0…200 W (wattage rating of the resistor shall be at least ½ lamp wattage)
R U / P
lamp magn lamp.magn
The above wattage rating of the resistor shall be at least ½ lamp wattage.
Figure 2 – Circuit to test whether ballast can withstand rectification
During and at the end of the tests specified under items a) to c), the ballast shall show no
defect impairing safety nor shall any flame, molten material, flammable gases or smoke be
produced.
61347-2-12 Ó IEC:2005+A1:2010 – 15 –
18 Construction
The requirements given in Clause 15 of IEC 61347-1 apply.
19 Creepage distances and clearances
The requirements given in Clause 16 of IEC 61347-1 apply.
20 Screws, current-carrying parts and connections
The requirements given in Clause 17 of IEC 61347-1 apply.
21 Resistance to heat, fire and tracking
The requirements given in Clause 18 of IEC 61347-1 apply.
22 Resistance to corrosion
The requirements given in Clause 19 of IEC 61347-1 apply.
– 16 – 61347-2-12 Ó IEC:2005+A1:2010
Annex A
(normative)
Test to establish whether a conductive part is a live part
which may cause an electric shock
The requirements of Annex A of IEC 61347-1 apply.
61347-2-12 Ó IEC:2005+A1:2010 – 17 –
Annex B
(normative)
Particular requirements for thermally protected lamp controlgear
The requirements of Annex B of IEC 61347-1 do not apply.
– 18 – 61347-2-12 Ó IEC:2005+A1:2010
Annex C
(normative)
Particular requirements for electronic lamp controlgear
with means of protection against overheating
The requirements of Annex C of IEC 61347-1 apply.
61347-2-12 Ó IEC:2005+A1:2010 – 19 –
Annex D
(normative)
Information for carrying out the heating tests
of thermally protected lamp controlgear
The requirements of Annex D of IEC 61347-1 apply.
– 20 – 61347-2-12 Ó IEC:2005+A1:2010
Annex E
(normative)
The use of constants S other than 4 500 in t tests
w
The requirements of Annex E of IEC 61347-1 do not apply.
61347-2-12 Ó IEC:2005+A1:2010 – 21 –
Annex F
(normative)
Draught-proof enclosure
The requirements of Annex F of IEC 61347-1 apply.
– 22 – 61347-2-12 Ó IEC:2005+A1:2010
Annex G
(normative)
Explanation of the derivation of the values of pulse voltages
The requirements of Annex G of IEC 61347-1 do not apply.
61347-2-12 Ó IEC:2005+A1:2010 – 23 –
Annex H
(normative)
Tests
The requirements of Annex H of IEC 61347-1 do not apply
– 24 – 61347-2-12 Ó IEC:2005+A1:2010
Annex I
(normative)
Precautions to be observed when measuring
with spherical spark gaps
Because many electronic ballasts do not have outputs where one pole is at earth potential,
the direct application of IEC 60052 cannot apply.
In all cases the following clauses shall be observed together with those requirements of
IEC 60052 which are applicable.
I.1 Spherical spark gap
The sphere-gap (spherical spark gap) shall be greater than the anticipated breakdown
distance and shall be progressively reduced until breakdown occurs (i.e. too small a gap
opening up to non-sparking distance is not a valid method of determining the correct voltage
value).
I.2 Breakdown gap distance
The breakdown gap distance shall be recorded and the 50 % peak voltage value determined
from Table 2 in IEC 60052.
I.3 Duty cycle of the electronic ballast
The duty cycle of the electronic ballast shall be observed to ensure that overheating/failure of
the components is not induced.
I.4 End of test
All safety precautions shall be observed and all voltages shall be discharged at the end of the
test.
61347-2-12 Ó IEC:2005+A1:2010 – 25 –
Bibliography
IEC 60188, High pressure mercury vapour lamps – Performance specifications
IEC 60192, Low pressure sodium vapour lamps – Performance specifications
IEC 60662, High pressure sodium vapour lamps
IEC 61167, Metal halide lamps
___________
– 26 – 61347-2-12 ã CEI:2005+A1:2010
SOMMAIRE
AVANT-PROPOS . 28
INTRODUCTION . 31
1 Domaine d'application . 32
2 Références normativ es . 32
3 Déf initions . 32
4 Exigences générales . 33
5 Généralités sur les essais . 33
6 Classif ication . 33
7 Marquage . 34
8 Bornes . 34
9 Dispositions en vue de la mise à la terre. 34
10 Protection contre les contacts accidentels avec les parties actives . 35
11 Résistance à l'humidité et isolement . 35
12 Rigidité diélectrique . 35
13 Essais d'endurance thermique des enroulements . 35
14 Conditions de défaut . 35
15 Protection des composants associés. 35
16 Tension d’amorçage . 35
17 Conditions anormales . 36
18 Construction . 41
19 Lignes de fuite et distance dans l'air . 41
20 Vis, parties transportant le courant et connexions . 41
21 Résistance à la chaleur, au feu et au cheminement . 41
22 Résistance à la corrosion . 41
Annexe A (normative) Essai ayant pour but de déterminer si une partie conductrice
est une partie active pouvant entraîner un choc électrique . 42
Annexe B (normative) Exigences particulières pour les appareillages de lampes à
protection thermique . 43
Annexe C (normative) Exigences particulières pour les appareillages de lampes
électroniques avec dispositifs de protection contre la surchauffe . 44
Annexe D (normative) Exigences pour les essais d'échauffement des appareillages
de lampes à protection thermique . 45
Annexe E (normative) Usage de constantes S différentes de 4 500 pour les essais
t . 46
w
Annexe F (normative) Enceinte à l'abri des courants d'air . 47
Annexe G (normative) Explications concernant le calcul des valeurs de tension
d'impulsion . 48
Annexe H (normative) Essais . 49
Annexe I (normative) Précautions à observer lors des mesures avec des éclateurs
sphériques . 50
61347-2-12 ã CEI:2005+A1:2010 – 27 –
Bibliographie . 51
– 28 – 61347-2-12 ã CEI:2005+A1:2010
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
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