AC and/or DC-supplied electronic controlgear for discharge lamps (excluding fluorescent lamps) - Performance requirements for low frequency squarewave operation

This International Standard specifies performance requirements for electronic controlgear for
use on a.c. and/or d.c. supplies up to 1 000 V and/or a.c. supplies up to 1 000 V at 50 Hz or
60 Hz, associated with discharge lamps, as specified in IEC 61167, which have information
for low frequency square wave operation, where the frequency range of the low frequency is
from 70 Hz to 400 Hz.
Tests in this standard are type tests. Requirements for testing individual controlgear during
production are not included.
There are regional standards regarding the regulation of mains current harmonics and
immunity for end products like luminaires and independent controlgear. In a luminaire, the
controlgear is dominant in this respect. Controlgear, together with other components, should
comply with these standards.

Gleich- und/oder wechselspannungsversorgtes elektronisches Betriebsgerät für Entladungslampen (ausgenommen Leuchtstofflampen) - Anforderungen an die Arbeitsweise für Niederfrequenz-Rechteckbetrieb

Appareillage électronique alimenté en courant alternatif et/ou continu pour lampes à décharge (à l'exclusion des lampes fluorescentes) - Exigences de performance pour le fonctionnement en onde carrée de basse fréquence

L'IEC 62811:2015 spécifie les exigences de performance des appareillages électroniques destinés à être utilisés sur des alimentations en courant alternatif et/ou en courant continu allant jusqu'à 1000 V et/ou sur des alimentations en courant alternatif jusqu'à 1 000 V à 50 Hz ou 60 Hz, associés avec des lampes à décharge, comme spécifié dans l'IEC 61167, comportant des informations concernant le fonctionnement en onde carrée de basse fréquence, lorsque la plage de fréquences de la basse fréquence est comprise entre 70 Hz et 400 Hz.

Izmenično in/ali enosmerno napajana krmilja za razelektritvene sijalke (razen fluorescentnih sijalk) - Tehnične zahteve za obratovanje pri nizkofrekvenčnih pravokotnih valovanjih

Ta mednarodni standard določa tehnične zahteve za elektronsko krmilje za uporabo pri izmeničnem in/ali enosmernem napajanju do 1000 V in/ali izmeničnem napajanju do 1000 V pri 50 Hz ali 60 Hz, povezane z razelektritvenimi sijalkami, kot je določeno v standardu IEC 61167, z informacijami za obratovanje pri nizkofrekvenčnih pravokotnih valovanjih, pri čemer je frekvenčni razpon nizke frekvence od 70 Hz do 400 Hz.
Preskusi, obravnavani v tem standardu, so tipski preskusi. Zahteve za preskušanje posameznih krmilj med proizvodnjo niso vključene.
Obstajajo regionalni standardi v zvezi z upravljanjem harmonikov napajalnega toka in odpornostjo za končne izdelke, kot so svetilke in neodvisno krmilje. V svetilki je v tem smislu prevladujoče krmilje. Krmilje naj bi bilo skupaj z drugimi sestavnimi deli v skladu s temi standardi.

General Information

Status
Published
Publication Date
16-Aug-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
15-Jun-2015
Due Date
20-Aug-2015
Completion Date
17-Aug-2015

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SLOVENSKI STANDARD
SIST EN 62811:2015
01-september-2015
,]PHQLþQRLQDOLHQRVPHUQRQDSDMDQDNUPLOMD]DUD]HOHNWULWYHQHVLMDONH UD]HQ
IOXRUHVFHQWQLKVLMDON 7HKQLþQH]DKWHYH]DREUDWRYDQMHSULQL]NRIUHNYHQþQLK
SUDYRNRWQLKYDORYDQMLK

AC and/or DC-supplied electronic controlgear for discharge lamps (excluding fluorescent

lamps) - Performance requirements for low frequency squarewave operation
Gleich- und/oder wechselspannungsversorgtes elektronisches Betriebsgerät für
Entladungslampen (ausgenommen Leuchtstofflampen) - Anforderungen an die
Arbeitsweise für Niederfrequenz-Rechteckbetrieb

Appareillage électronique alimenté en courant alternatif et/ou continu pour lampes à

décharge (à l'exclusion des lampes fluorescentes) - Exigences de performance pour le

fonctionnement en onde carrée de basse fréquence
Ta slovenski standard je istoveten z: EN 62811:2015
ICS:
29.130.01 Stikalne in krmilne naprave Switchgear and controlgear
na splošno in general
29.140.30 )OXRUHVFHQþQHVLMDONH6LMDONH Fluorescent lamps.
Discharge lamps
SIST EN 62811:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62811:2015
---------------------- Page: 2 ----------------------
SIST EN 62811:2015
EUROPEAN STANDARD EN 62811
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 29.140.99
English Version
AC and/or DC-supplied electronic controlgear for discharge
lamps (excluding fluorescent lamps) - Performance requirements
for low frequency squarewave operation
(IEC 62811:2015)

Appareillage électronique alimenté en courant alternatif Gleich- und/oder wechselspannungsversorgtes

et/ou continu pour lampes à décharge (à l'exclusion des elektronisches Betriebsgerät für Entladungslampen

lampes fluorescentes) - Exigences de performance pour le (ausgenommen Leuchtstofflampen) - Anforderungen an die

fonctionnement en onde carrée de basse fréquence Arbeitsweise für Niederfrequenz-Rechteckbetrieb

(IEC 62811:2015) (IEC 62811:2015)

This European Standard was approved by CENELEC on 2015-05-14. 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 62811:2015 E
---------------------- Page: 3 ----------------------
SIST EN 62811:2015
EN 62811:2015 - 2 -
Foreword

The text of document 34C/1132/FDIS, future edition 1 of IEC 62811, prepared by SC 34C, "Auxiliaries for

lamps", of IEC TC 34, "Lamps and related equipment", was submitted to the IEC-CENELEC parallel vote

and approved by CENELEC as EN 62811:2015.
The following dates are fixed:
(dop) 2016-02-14
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-05-14
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 62811:2015 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 61000-3-2:2000 NOTE Harmonized as EN 61000-3-2:2000.
IEC 61000-4-30:2003 NOTE Harmonized as EN 61000-4-30:2003.
IEC 61547 NOTE Harmonized as EN 61547.
---------------------- Page: 4 ----------------------
SIST EN 62811:2015
- 3 - EN 62811:2015
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 60050 series International Electrotechnical Vocabulary - series

IEC 61000-4-14 1999 Electromagnetic compatibility (EMC) -- Part EN 61000-4-14 1999

4-14: Testing and measurement techniques
- Voltage fluctuation immunity test
+A1 2001 +A1 2004
+A2 2009 +A2 2009
IEC 61167 - - -
IEC 61347-1 - Lamp controlgear - Part 1: General and EN 61347-1 -
safety requirement
IEC 61347-2-12 - Lamp controlgear - Part 2-12: Particular - -
requirements for d.c. or a.c. supplied
electronic ballasts for discharge lamps
(excluding fluorescent lamps)
IEC 62386 series Digital addressable lighting interface EN 62386 series
---------------------- Page: 5 ----------------------
SIST EN 62811:2015
---------------------- Page: 6 ----------------------
SIST EN 62811:2015
IEC 62811
Edition 1.0 2015-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AC and/or DC-supplied electronic controlgear for discharge lamps (excluding
fluorescent lamps) – Performance requirements for low frequency square wave
operation
Appareillage électronique alimenté en courant alternatif et/ou continu pour
lampes à décharge (à l'exclusion des lampes fluorescentes) – Exigences de
performance pour le fonctionnement en onde carrée de basse fréquence
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99 ISBN 978-2-8322-2600-1

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 62811:2015
– 2 – IEC 62811:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 8

4 General notes on tests .................................................................................................. 11

5 Marking ......................................................................................................................... 11

6 General statement ......................................................................................................... 12

7 Starting conditions ......................................................................................................... 12

7.1 General ................................................................................................................. 12

7.2 Breakdown ............................................................................................................ 12

7.3 Take-over ............................................................................................................. 13

7.4 Run-up .................................................................................................................. 13

7.4.1 Run-up current .............................................................................................. 13

7.4.2 Average peak current ratio (APCR) ................................................................ 13

7.4.3 D.C. current ................................................................................................... 14

8 Operating conditions ...................................................................................................... 14

8.1 General ................................................................................................................. 14

8.2 Power control ........................................................................................................ 14

8.3 Frequency range of low frequency square wave .................................................... 15

8.4 D.C. current .......................................................................................................... 15

8.5 Average lamp potential against earth (for quartz arc bulbs only) ........................... 15

8.6 Average peak current ratio .................................................................................... 15

8.7 Commutation time ................................................................................................. 15

8.8 HF ripple ............................................................................................................... 16

8.9 Control interfaces ................................................................................................. 16

8.10 Operating sustainability......................................................................................... 16

9 Displacement factor ....................................................................................................... 17

10 Supply current ............................................................................................................... 17

11 Endurance ..................................................................................................................... 17

11.1 General ................................................................................................................. 17

11.2 Temperature cycling at −20 °C and at +80 °C ....................................................... 17

11.3 Test at t +10 K ..................................................................................................... 19

Annex A (normative) Tests ................................................................................................... 20

A.1 General requirements ........................................................................................... 20

A.1.1 General ......................................................................................................... 20

A.1.2 Ambient temperature ..................................................................................... 20

A.1.3 Supply voltage and frequency ........................................................................ 20

A.1.4 Magnetic effects ............................................................................................ 20

A.1.5 Mounting and connection of reference lamps ................................................. 20

A.1.6 Reference lamp stability ................................................................................ 20

A.1.7 Reference ballast........................................................................................... 21

A.1.8 Instrument characteristics .............................................................................. 21

Annex B (normative) Reference ballasts .............................................................................. 22

---------------------- Page: 8 ----------------------
SIST EN 62811:2015
IEC 62811:2015 © IEC 2015 – 3 –

B.1 Marking ................................................................................................................. 22

B.2 Design characteristics ........................................................................................... 22

B.2.1 Reference ballast for frequencies of 70 Hz to 400 Hz ................................... 22

B.2.2 Protection ...................................................................................................... 22

B.3 Operating characteristics for low frequency square wave ...................................... 22

B.3.1 General ......................................................................................................... 22

B.3.2 Impedance ..................................................................................................... 22

B.3.3 Series inductance and parallel capacitance ................................................... 23

B.4 Circuit for frequencies of low frequency square wave (see Figure 5) ..................... 23

B.4.1 Power supply ................................................................................................. 23

B.4.2 Instruments ................................................................................................... 23

B.4.3 Wiring ............................................................................................................ 23

Annex C (normative) Conditions for reference lamps ........................................................... 24

Annex D (normative) Control interface for controllable controlgear ....................................... 25

D.1 Overview............................................................................................................... 25

D.2 Control by d.c. voltage .......................................................................................... 25

D.2.1 Circuit diagram – Functional specification for d.c. voltage control (see

Figure D.1) .................................................................................................... 25

D.2.2 Connection diagram ....................................................................................... 25

D.2.3 Electrical specifications ................................................................................. 26

D.3 Control by pulse width modulation (PWM) ............................................................. 27

D.3.1 Circuit diagram – Functional specification for PWM control (see Figure

D.4) ............................................................................................................... 27

D.3.2 Connection diagram ....................................................................................... 28

D.3.3 Electrical specifications ................................................................................. 28

D.4 Control by DALI .................................................................................................... 28

Annex E (normative) Spectral analysis of power ripple: calculation procedure for

amplitude spectrum ratio and guidance ................................................................................. 29

E.1 General ................................................................................................................. 29

E.2 Mathematical background ..................................................................................... 29

E.3 Description of the algorithm .................................................................................. 29

E.4 Measurement procedure ....................................................................................... 30

E.5 Test signal ............................................................................................................ 30

E.5.1 General ......................................................................................................... 30

E.5.2 Description of the test signal.......................................................................... 31

E.5.3 Outcome of the test signal ............................................................................. 31

Annex F (normative) Open circuit voltage method of measurement for pulse ignition ........... 32

Bibliography .......................................................................................................................... 33

Figure 1 – Measurement of APCR during run-up and steady state ........................................ 14

Figure 2 – Test set-up for measuring the lamp potential against earth ................................... 15

Figure 3 – Commutation time, deviating waveform ................................................................ 16

Figure 4 – Example of the cycling described under 11.2; Clause E.2..................................... 18

Figure 5 – Low frequency square wave reference circuit ....................................................... 19

Figure D.1 – Schematic representation of the interface for 1 V to 10 V ................................. 25

Figure D.2 – Control device for multiple controlgear, for 1 V to 10 V ..................................... 26

Figure D.3 – Control device is a current source..................................................................... 26

Figure D.4 – Schematic representation of the interface for PWM dimming............................. 27

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SIST EN 62811:2015
– 4 – IEC 62811:2015 © IEC 2015

Figure D.5 – Some typically PWM signals ............................................................................. 27

Figure D.6 – Control device for multiple controlgear, for PWM .............................................. 28

Table 1 – Controlgear life time information ............................................................................ 12

Table 2 – Minimum OCV ....................................................................................................... 13

Table E.1 – Settings for the analysis ..................................................................................... 30

---------------------- Page: 10 ----------------------
SIST EN 62811:2015
IEC 62811:2015 © IEC 2015 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AC AND/OR DC-SUPPLIED ELECTRONIC CONTROLGEAR
FOR DISCHARGE LAMPS (EXCLUDING FLUORESCENT LAMPS) –
PERFORMANCE REQUIREMENTS FOR
LOW FREQUENCY SQUARE WAVE OPERATION
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 62811 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/1132/FDIS 34C/1149/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.

---------------------- Page: 11 ----------------------
SIST EN 62811:2015
– 6 – IEC 62811:2015 © 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.
---------------------- Page: 12 ----------------------
SIST EN 62811:2015
IEC 62811:2015 © IEC 2015 – 7 –
INTRODUCTION

This International Standard covers performance requirements for electronic controlgear for

use on a.c., at 50 Hz or 60 Hz and/or d.c. supplies up to 1 000 V associated with discharge

lamps as specified in IEC 61167 for low frequency square wave operation.

In order to obtain satisfactory performance of discharge lamps and electronic controlgears, it

is necessary that certain features of their design be properly coordinated. It is essential,

therefore, that specifications for them be written in terms of measurement made against some

common baseline of reference, permanent and reproducible.

These conditions may be fulfilled by reference ballasts. Moreover, the testing of controlgear

for discharge lamps will, in general, be made with reference lamps and, in particular, by

comparing the results obtained using these lamps on the controlgear to be tested and on the

reference ballast. Whereas the reference ballast for frequencies of 50 Hz or 60 Hz is a self-

inductive coil, the low frequency square wave reference ballast is a resistor because of its

independence of frequency and the lack of influence of parasitic capacitance.
---------------------- Page: 13 ----------------------
SIST EN 62811:2015
– 8 – IEC 62811:2015 © IEC 2015
AC AND/OR DC-SUPPLIED ELECTRONIC CONTROLGEAR
FOR DISCHARGE LAMPS (EXCLUDING FLUORESCENT LAMPS) –
PERFORMANCE REQUIREMENTS FOR
LOW FREQUENCY SQUARE WAVE OPERATION
1 Scope

This International Standard specifies performance requirements for electronic controlgear for

use on a.c. and/or d.c. supplies up to 1 000 V and/or a.c. supplies up to 1 000 V at 50 Hz or

60 Hz, associated with discharge lamps, as specified in IEC 61167, which have information

for low frequency square wave operation, where the frequency range of the low frequency is

from 70 Hz to 400 Hz.

Tests in this standard are type tests. Requirements for testing individual controlgear during

production are not included.

There are regional standards regarding the regulation of mains current harmonics and

immunity for end products like luminaires and independent controlgear. In a luminaire, the

controlgear is dominant in this respect. Controlgear, together with other components, should

comply with these standards.
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 60050 (all parts), International Electrotechnical Vocabulary

IEC 61000-4-14:1999, Electromagnetic compatibility (EMC) – Part 4-14: Testing and

measurement techniques – Voltage fluctuation immunity test
IEC 61000-4-14:1999/AMD1:2001
IEC 61000-4-14:1999/AMD2:2009
IEC 61167, Metal Halide lamps – Performance specifications
IEC 61347-1, Lamp controlgear – Part 1: General and safety requirements

IEC 61347-2-12, Lamp controlgear – Part 2-12: Particular requirements for d.c. or a.c.

supplied electronic ballasts for discharge lamps (excluding fluorescent lamps)
IEC 62386 (all parts), Digital addressable lighting interface
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-845 as well

as the following apply.
---------------------- Page: 14 ----------------------
SIST EN 62811:2015
IEC 62811:2015 © IEC 2015 – 9 –
3.1
reference ballast

special resistive ballast for lamps, for operation on low frequency square wave designed for

the purpose of providing comparison standards for use in testing ballasts, for the selection of

reference lamps and for testing regular production lamps under standardized conditions

Note 1 to entry: It is essentially characterized by the fact that, at its rated frequency, it has a stable

voltage/current ratio which is relatively uninfluenced by variations in current, temperature and magnetic

surroundings, as outlined in this standard.

[SOURCE: IEC 60050:1987, 845-08-36, modified – Adapted for electronic operation of lamps.]

3.2
reference lamp

discharge lamp selected for the purpose of testing ballasts and which, when associated with a

reference ballast under specified conditions, has electrical values which are close to the

objective values given in a relevant specification
[SOURCE: IEC 60050:1987, 845-07-55]
3.3
calibration current of a reference ballast

value of the current on which are based the calibration and control of the reference ballast

Note 1 to entry: Such a current should preferably be approximately equal to the rated or typical current of the

lamps for which the reference ballast is suitable.

[SOURCE: IEC 61347-1:2007, 3.4, modified — In the note to entry the words "rated running"

are replaced by "rated or typical"]
3.4
total circuit power

total power dissipated by controlgear and lamp in combination, at rated voltage and frequency

of the controlgear
[SOURCE: IEC 60929:2011, 3.5]
3.5
displacement factor
cosφ

cosine of the phase difference between the fundamental of the mains voltage and the

fundamental of the mains current
3.6
run-up current

lamp current after take-over phase until the lower limit of the lamp voltage is reached

Note 1 to entry: Lower limit is given in Annex G of IEC 61167.
3.7
take-over

time between lamp being able to conduct current until electrodes are at thermionic emission

Note 1 to entry: At the end of the take-over phase, the lamp power factor is above 0,9 and the lamp voltage

stabi
...

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