IEC 62442-1:2022
(Main)Energy performance of lamp controlgear - Part 1: Controlgear for fluorescent lamps - Method of measurement to determine the total input power of controlgear circuits and the efficiency of controlgear
Energy performance of lamp controlgear - Part 1: Controlgear for fluorescent lamps - Method of measurement to determine the total input power of controlgear circuits and the efficiency of controlgear
IEC 62442-1:2022 defines a measurement and calculation method of the total input power for controlgear-lamp circuits when operating with their associated fluorescent lamp(s). The calculation method for the efficiency of the lamp controlgear is also defined. This document applies to electrical controlgear-lamp circuits consisting only of the controlgear and the lamp(s). It is intended for use on DC supplies up to 1 000 V and/or AC supplies up to 1 000 V at 50 Hz or 60 Hz. This third edition cancels and replaces the second edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- this edition has been harmonized with IEC 62442-2 and IEC 62442-3;
- the reference to and use of the measurement methods for non-active power consumption in accordance with IEC 63103 have been added.
Performance énergétique des appareillages de lampes - Partie 1 : Appareillages des lampes à fluorescence - Méthode de mesurage pour la détermination de la puissance d'entrée totale des circuits d'appareillage et du rendement des appareillages
L'IEC 62442-1:2022 définit une méthode de mesurage et de calcul de la puissance d'entrée totale pour les circuits appareillage-lampe qui fonctionnent avec la ou les lampes à fluorescence qui leur sont associées. La méthode de calcul du rendement des appareillages de lampes est également définie. Le présent document s'applique aux circuits appareillage-lampe électriques constitués exclusivement de l'appareillage et de la ou des lampes. Il s'applique aux alimentations en courant continu jusqu'à 1 000 V et/ou aux alimentations en courant alternatif jusqu'à 1 000 V à 50 Hz ou 60 Hz. Cette troisième édition annule et remplace la deuxième édition parue en 2018. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- cette édition a été harmonisée avec l'IEC 62442-2 et l'IEC 62442-3;
- des références à l'IEC 63103 ont été ajoutées afin d'appliquer les méthodes de mesurage de la consommation de puissance en mode non actif.
La version française de cette norme n'a pas été soumise au vote.
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IEC 62442-1 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
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Energy performance of lamp controlgear –
Part 1: Controlgear for fluorescent lamps – Method of measurement to determine
the total input power of controlgear circuits and the efficiency of controlgear
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IEC 62442-1 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Energy performance of lamp controlgear –
Part 1: Controlgear for fluorescent lamps – Method of measurement to determine
the total input power of controlgear circuits and the efficiency of controlgear
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.99 ISBN 978-2-8322-5322-9
– 2 – IEC 62442-1:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General . 9
4.1 Applicability .
4.1 Ballast lumen factor . 10
4.2 Dimmable controlgear . 10
4.3 Multi-power and/or multi-number-lamp controlgear . 10
4.4 General notes on tests . 11
4.5 Sampling of controlgear for testing . 11
4.6 Size of the test sample. 11
4.7 Conditioning of lamps . 11
4.8 Test voltages and frequencies . 11
4.9 Sensor and network connections . 11
5 Method of measurement and calculation of total input power of controlgear-lamp
circuits and the efficiency of controlgear . 11
5.1 Correction for ballast lumen factor . 12
5.2 Method of measurement . 12
5.3 Measurement and calculation of the total input power of magnetic
controlgear-lamp circuits . 12
5.4 Calculation of the efficiency of electromagnetic controlgear . 13
5.5 Measurement and calculation of the total input power of electronic
controlgear-lamp circuits . 13
5.6 Calculation of the efficiency of electronic controlgear . 14
5.7 Measuring the standby power . 14
5.8 Measuring the networked standby power . 14
5.9 Reporting of power measurements . 15
Annex A (normative) Energy performance measurement set-up . 16
A.1 Measurement set-up for electromagnetic controlgear . 16
A.2 Measurement set-up for electronic controlgear . 16
A.2.1 Measurement of the total input power . 16
A.2.2 Light output measurement .
A.2.2 Light output measurement . 17
A.2.3 Distance to lamp related to lamp length: explanations . 19
Annex B (informative) Application of the reference ballast when assessing lamps in
electronic operation . 21
B.1 Calculation of the reference ballast impedance . 21
B.2 Method of adjusting the lamp power . 21
Bibliography . 22
Figure A.1 – Measurement of electromagnetic controlgear-lamp circuits . 16
Figure A.2 – Measurement of AC supplied electronic controlgear-lamp circuits . 17
Figure A.3 – Test setup for measuring standby power .
Figure A.3 – Side view of light output measurement system . 18
Figure A.4 – Top view of light output measurement system . 18
Figure A.5 – Configuration of lamp and photocell sensor . 20
Table 1 – Typical nominal electricity supply details for some regions . 11
– 4 – IEC 62442-1:2022 RLV © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENERGY PERFORMANCE OF LAMP CONTROLGEAR –
Part 1: Controlgear for fluorescent lamps –
Method of measurement to determine the total input power
of controlgear circuits and the efficiency of controlgear
FOREWORD
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 62442-1:2018. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
IEC 62442-1 has been prepared by subcommittee 34C: Auxiliaries for lamps, of IEC technical
committee 34: Lighting. It is an International Standard.
This third edition cancels and replaces the second edition published in 2018. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) this edition has been harmonized with IEC 62442-2 and IEC 62442-3;
b) the reference to and use of the measurement methods for non-active power consumption in
accordance with IEC 63103 have been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
34C/1545/FDIS 34C/1548/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 62442 series, published under the general title Energy performance
of lamp controlgear, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document 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.
– 6 – IEC 62442-1:2022 RLV © IEC 2022
ENERGY PERFORMANCE OF LAMP CONTROLGEAR –
Part 1: Controlgear for fluorescent lamps –
Method of measurement to determine the total input power
of controlgear circuits and the efficiency of controlgear
1 Scope
This part of IEC 62442 defines a measurement and calculation method of the total input power
for controlgear-lamp circuits when operating with their associated fluorescent lamp(s). The
calculation method for the efficiency of the lamp controlgear is also defined. This document
applies to electrical controlgear-lamp circuits consisting only of the controlgear and the lamp(s).
It is intended for use on DC supplies up to 1 000 V and/or AC supplies up to 1 000 V at 50 Hz
or 60 Hz.
NOTE Requirements for testing individual controlgear during production are not included.
This document specifies the measurement method for the total input power and the calculation
method of the controlgear efficiency for all controlgear used for domestic and normal
commercial purposes operating with the following fluorescent lamps:
– linear double-capped fluorescent lamps (IEC 60081);
– single-ended (compact) single-capped fluorescent lamps (IEC 60901);
– other general purpose low-pressure mercury fluorescent lamps.
This document does not apply to:
– controlgear which form an integral part of the lamp;
– controllable wire-wound magnetic controlgear.
– luminaires, which rely on additional optical performance aspects.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050-845, International Electrotechnical Vocabulary (IEV) – Part 845: Lighting (available
at http://www.electropedia.org)
IEC 60081:1997, Double-capped fluorescent lamps – Performance specifications
IEC 60081:1997/AMD4:2010
IEC 60901:1996, Single-capped fluorescent lamps – Performance specifications
IEC 60901:1996/AMD5:2011
IEC 60921:2004, Ballasts for tubular fluorescent lamps – Performance requirements
IEC 60929:2011, AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
IEC 61347-2-3, Lamp control gear – Part 2-3: Particular requirements for AC and/or DC supplied
electronic control gear for fluorescent lamps
IEC 61347-2-8, Lamp controlgear – Part 2-8: Particular requirements for ballasts for fluorescent
lamps
IEC 63103:2020, Lighting equipment – Non-active mode power measurement
IEC TS 63105, Lighting systems and related equipment – Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-845 and
IEC TS 63105 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
nominal value
suitable approximate quantity value used to designate or identify a component, device or
equipment
Note 1 to entry: To express the "nominal value" of a particular quantity, the term "value" is replaced by the quantity
name; for example, nominal power, nominal voltage, and nominal current.
3.2
limiting value
greatest or smallest admissible value of one of the quantities
3.2
rated value
quantity value for specified operating conditions of a component, device or equipment
value of a quantity, used for specification purposes, declared by the manufacturer or
responsible vendor and established under standard test conditions
Note 1 to entry: The value and conditions are specified in the relevant standard or assigned by the manufacturer or
responsible vendor. To express the "rated value" of a particular quantity, the term "value" is replaced by the quantity
name; for example, rated power, rated voltage, rated current, and rated temperature.
Note 2 to entry: For the different kinds of operation, rated electrical values are given on the lamp data sheets as:
− rated electrical values under "electrical characteristics", if the lamp is defined for 50 Hz/60 Hz operation only;
− rated electrical values under "electrical characteristics", if the lamp is defined for high frequency (≥ 20 kHz)
operation only;
− rated electrical values and typical electrical values, if the lamp is defined simultaneously for 50 Hz/60 Hz
operation and high frequency operation:
• for 50 Hz/60 Hz operation: rated electrical values under "electrical characteristics", and
• for high frequency operation: rated electrical values under "typical lamp characteristics".
[SOURCE: IEC 60050-845:2020, 845-27-100, modified – The note 2 to entry has been replaced
by a new Note 2 to entry.]
3.3
controlgear
one or more components between the supply and one or more lamps which may can serve to
transform the supply voltage, limit the current of the lamp(s) to the required value, provide
– 8 – IEC 62442-1:2022 RLV © IEC 2022
starting voltage and preheating current, prevent cold starting, correct power factor or reduce
radio interference
3.4
electromagnetic controlgear
magnetic controlgear
controlgear which by means of inductance, or a combination of inductance and capacitance,
serves mainly to limit the current of the electric lamp(s) to the required value and operates the
lamp(s) at the same frequency as the supply frequency
[SOURCE: IEC 60050-845:2020, 845-28-052, modified – The second preferred term has been
added.]
3.5
electronic controlgear
AC invertor supplied with alternating current and/or direct current and including stabilizing
elements for starting and operating one or more tubular fluorescent lamps, generally at high
frequency
3.6
fluorescent lamp
discharge lamp of the low pressure mercury type, in which most of the light is emitted by one
or several layers of phosphors excited by the ultra-violet radiation from the discharge
3.7
controlgear-lamp circuit
electrical circuit, or part thereof, normally built in a luminaire, consisting of the controlgear and
lamp(s)
3.8
reference ballast
special ballast, either inductive for lamps for operation on AC mains frequencies, or resistive
for lamps for operation on high frequency
Note 1 to entry: A reference ballast is 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.
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 IEC 60929
and IEC 60921.
Note 2 to entry: Annex B provides details for calculating the reference ballast characteristics and the method of
operation with the reference ballast.
3.9
reference lamp
lamp selected for testing controlgear which, when associated with a reference controlgear, has
electrical characteristics which are close to the rated values or typical lamp characteristics as
stated in the relevant lamp standard
Note 1 to entry: For details regarding the tolerances, see Clause B.2.
3.10
lamp rated power
P
Lrated
power of a given lamp type specified by the manufacturer or the supplier, the lamp being
operated under specified conditions
Note 1 to entry: The rated power of a lamp is expressed in W.
3.11
ballast lumen factor
BLF
ratio of the light output of the reference lamp when the ballast under test is operated at its rated
voltage, compared with the light output of the same lamp operated with the appropriate
reference ballast supplied at its rated voltage and frequency
Note 1 to entry: This note applies to the French language only.
3.12
total input power
total power consumed by the controlgear-lamp (light source) circuit measured at rated input
voltage
[SOURCE: IEC 62442-1:—, 3.13, modified — "supplied to" has been replaced with "consumed
by", "(light source)" has been added and the note has been deleted.]
3.13
controlgear efficiency
η η
controlgear CG
ratio of the output power to the lamp(s) and the total input power of the controlgear
Note 1 to entry: Detailed measurement method and conditions are given in Clause 5.
Note 2 1 to entry: Loads from sensors, network connections and other auxiliary are disconnected or, if not possible,
otherwise eliminated from the result.
3.14
multi-power-lamp controlgear
controlgear designed to operate one or more lamp(s) with different rated powers
3.15
multi-number-lamp controlgear
controlgear designed to operate simultaneously more than one similar lamp
3.16
standby mode
average power consumption of a controlgear in the standby mode
Note 1 to entry: Power supplied by controlgear to sensors, network connections and other auxiliaries is not included
in the standby power.
Note 2 to entry: Standby power is expressed in W.
mode when the equipment is connected to a supply voltage with the
illumination function off, while capable of being activated by an external trigger not being a
trigger from a network
Note 1 to entry: Examples of external triggers are sensing or timing.
[SOURCE: IEC 63103:2020, 3.10, modified – The domain "" has been
replaced with "".]
3.17
networked standby mode
mode when the equipment is connected to a supply voltage with the
illumination function off, while capable of being activated by an external trigger being a trigger
from a network
[SOURCE: IEC 63103:2020, 3.11, modified – The domain "" has been
replaced with "".]
– 10 – IEC 62442-1:2022 RLV © IEC 2022
3.18
standby power
average power consumption in the standby mode
Note 1 to entry: Power supplied by controlgear to sensors, network connections and other auxiliaries is not included
in the standby power.
Note 2 to entry: Standby power is expressed in W.
3.19
networked standby power
average power consumption in the networked standby mode
4 General
4.1 Applicability
The measurement and calculation methods in this document shall only be used for controlgear
which conforms to IEC 61347-2-3 or IEC 61347-2-8.
4.1 Ballast lumen factor
For every controlgear-lamp combination submitted for the test, the ballast lumen factor shall be
measured. The ballast lumen factor is defined in 3.11 and expressed as:
Light
test
BLF = (1)
Light
ref
Light
test
BLF =
(1)
Light
ref
where
Light is the light output of the reference lamp connected to the reference ballast measured
ref
by photocell meter reading;
Light is the light output of the reference lamp connected to the controlgear under test
test
measured by photocell meter reading.
The ballast lumen factor shall be in the range of 0,925 to 1,075. A controlgear with a lower
ballast lumen factor is not suitable for testing. The upper limit of 1,075 may be exceeded, if the
value for maximum lamp operation current and maximum current in any lead to cathodes comply
with the rated value in IEC 60081 and IEC 60901.
4.2 Dimmable controlgear
A sufficient cathode temperature shall be produced by the heating circuit at any possible
dimming position within the available dimming range of the controlgear as specified in the
relevant data sheet in IEC 60081 and IEC 60901.
Dimmable controlgear shall be measured at 100 % and 25 % lumen output of the operated
lamp(s).
4.3 Multi-power and/or multi-number-lamp controlgear
Multi-power and multi-number-lamp controlgear shall be measured with all the possible lamp
power and number of lamp combinations. The manufacturer shall declare the relevant BLF for
each combination.
4.4 General notes on tests
The measurement conditions specified in IEC 60921:2004 or IEC 60929:2011, Annex A shall
be applied, unless otherwise specified in this document.
For measurement uncertainty and traceability see ISO/IEC Guide 98-3 and IEC Guide 115.
4.5 Sampling of controlgear for testing
The requirements and tolerances specified in this document are based on the testing of a type
test sample submitted by the manufacturer for that purpose. This sample should consist of units
having characteristics typical of the manufacturer's production and be as close to the production
centre point values as possible.
4.6 Size of the test sample
Tests are carried out with one test specimen.
4.7 Conditioning of lamps
Lamps shall be handled and stabilized as described in IEC 60081:1997, B.1.1 and
IEC 60081:1997/AMD4:2010, B.1.1 and in IEC 60901:1996, B.1.1 and
IEC 60901:1996/AMD5:2011, B.1.1.
4.8 Test voltages and frequencies
Where the test voltage and frequency are not defined by national or regional requirements, the
test voltage and the test frequency shall be the nominal voltage and the nominal frequency of
the country or region for which the measurement is being determined (refer to Table 1).
Table 1 – Typical nominal electricity supply details for some regions
a, c
Country or region
Rated voltage and frequency
Europe 230 V, 50 Hz
North America 120 V, 277 V, 60 Hz
b
100 V, 200 V, 50/60 Hz
Japan
China 220 V, 50 Hz
Australia and New Zealand 230 V, 50 Hz
South Africa 230 V, 50 Hz
a
Values are for single phase only. Some single phase supply voltages can be double the nominal voltage above
(centre transformer tap). The voltage between two phases of a three-phase system is 1,73 times single phase
values (e.g. 400 V for Europe).
b
50 Hz is applicable for the Eastern part and 60 Hz for the Western part.
c
If the manufacturer advises that for a marked voltage range a discrete value shall be used for measurement,
this should be observed.
The above table can require test voltages additional to those required in IEC 63103.
4.9 Sensor and network connections
For the measurement of all kinds of controlgear power (also standby) the power consumed by
all circuits (internal or external) which are not involved in power conversion for the controlgear
operation (e.g. communication devices, external sensors, auxiliary load, battery charging
circuits) shall be excluded from the measurements. If the auxiliary cannot be disconnected, its
effect shall be otherwise eliminated from the result.
– 12 – IEC 62442-1:2022 RLV © IEC 2022
NOTE Power consumed by circuits necessary for the proper operation of power conversion is considered in the
measurement (e.g. cooling fan, signalling lighting).
For the measurement of all kinds of controlgear power (also standby) the power consumed by
all circuits (internal or external) shall be considered as indicated in IEC 63103.
NOTE Although the scope of IEC 63103 is limited to non-active mode power, the principle is also suitable for other
power measurements.
5 Method of measurement and calculation of total input power of
controlgear-lamp circuits and the efficiency of controlgear
5.1 Correction for ballast lumen factor
The total input power measured is corrected to a BLF of 0,95 for wire-wound magnetic
controlgear and of 1,00 for high frequency (HF) electronic controlgear. Additionally, tolerances
of reference lamps are compensated.
5.2 Method of measurement
The measurements are carried out with the power meter connected to measure the total input
power into the controlgear-lamp circuit, using:
– for electromagnetic controlgear-lamp circuits:
the conditions specified in IEC 60921:2004, A.6.1 and the test circuit of Figure A.1;
– for AC supplied electronic controlgear-lamp circuits:
the conditions specified in IEC 60921:2004, A.6.2, as far as applicable, and the test circuit
of Figure A.2.
The value of the total input power (P ) is recorded when a steady state has been reached
tot meas
(controlgear temperature and lamp current stabilized).
The measurements with the controlgear under test in the controlgear-lamp circuit are to shall
be made with the rated supply voltage. The value P of a reference lamp, in some cases,
Lrated
may deviate from the nominal value of the lamp.
5.3 Measurement and calculation of the total input power of magnetic
controlgear-lamp circuits
The total input power (P ) of a controlgear-lamp circuit is measured with one controlgear
tot meas
and one reference lamp (or the number of reference lamps the controlgear is designed to
operate). The reference lamps shall conform to IEC 60921:2004, Annex D; in addition the lamp
current shall not deviate from by more than 1 % of the rated lamp current.
The measured total input power (P ) is corrected to a BLF of 0,95 and corresponds to
tot meas
that value that would be given by the reference lamp with rated setting in order to minimize the
error caused by the variation of the characteristics of the reference lamps used.
The corrected total input power of the ballast-lamp circuit (P ) is calculated using the
tot ref
following Equation (2):
P
Lref meas
PP 0,95−−P P
( ) (2)
Lref meas Lrated
tot ref tot meas
P
Lmeas
where
=
P is the total input power of the controlgear-lamp circuit under test corrected to
tot ref
comparable reference conditions (in W);
P is the measured total input power into the controlgear-lamp circuit under test (in W);
tot meas
P P is the measured lamp power in the circuit with the reference ballast (in W);
lref Lref meas
P is the measured lamp power in the circuit with the test controlgear (in W);
Lmeas
P is the rated lamp power of the relevant reference lamp according to the lamp data
Lrated
sheet (in W).
5.4 Calculation of the efficiency of electromagnetic controlgear
The ballast lumen factor of 0,95 for the light output of lamps operated with electromagnetic
controlgear requires the calculation of the efficiency of the magnetic controlgear using
Equation (3):
P
Lrated
η = 0,95
(3)
controlgear
P
tot ref
5.5 Measurement and calculation of the total input power of electronic
controlgear-lamp circuits
The total input power (P ) of a controlgear-lamp circuit is measured with one controlgear
tot meas
and one reference lamp (or the number of reference lamps the controlgear is designed to
operate). The reference lamps shall conform to IEC 60929:2011, Annex C; in addition the lamp
current shall not deviate from by more than 1 % of the rated lamp current. The measurement
set-up is described in Annex A.
The comparison between the controlgear circuit with the controlgear under test and the
controlgear-lamp circuit with reference ballast in accordance with, as far as applicable,
IEC 60921:2004, A.6.1 or A.6.2 is made with the same reference lamp using a photocell
positioned as shown in Figure A.3 and Figure A.4 for measuring the light output of the lamp.
The measurements are carried out using the test circuit specified in Figure A.1.
Measurement in the Ulbricht sphere is accepted as an alternative to the ones specified in
Figure A.3. The diameter of the sphere should be at least A + 200 mm. For parameter A, see
Figure A.4 In case of doubt, the measurement using the photocell (Figure A.2) should serve as
reference.
NOTE With electronic controlgear, measurements of power losses of the controlgear itself cannot be measured
accurately. Therefore, only the total input power method (measuring whole ballast-lamp circuits) can be carried out.
The high frequency lamp current should be obtained with a tolerance of ±1 % to that specified
for the rated current in the lamp standard. At the end of this procedure, the measured high
frequency lamp power (P P ) shall be within ±2,5 % of the rated power of the lamp
lref Lref meas
(see electrical characteristics on lamp data sheets).
After reaching stable conditions (controlgear temperature and lamp current stabilized), the
measured value with the photocell is set at 100 %.
Under the same test conditions (positioning of the lamp and photocell unchanged), the
controlgear under test is connected to the lamp circuit and operated until stable conditions again
are reached.
– 14 – IEC 62442-1:2022 RLV © IEC 2022
The ratio of the light output of the lamp measured via the photocell, when connected to the
controlgear under test, to the light output of the lamp, when connected to the reference ballast,
shall be at least 92,5 %.
The total input power (P ) at the supply input of the controlgear under test is then
tot meas
measured.
The measured total input power (P ) into the controlgear-lamp circuit under test is
tot meas
corrected to a BLF of 1,00 (Light /Light ) and to minimize the error caused by the variation
ref test
of the characteristics of the reference lamp used (P / P P /P ). The total input
lrated lref Lrated Lref meas
power corrected (P ) of the controlgear-lamp circuit is calculated using the following
tot ref
Equation (4):
P Light
Lrated ref
PP= ××
(4)
tot ref tot meas
P Light
Lref meas test
where
P is the total input power of the controlgear-lamp circuit under test corrected to
tot ref
comparable reference conditions (in W);
P is the measured total input power into the controlgear-lamp circuit under test (in W);
tot meas
P is the rated lamp or typical HF power of the relevant reference lamp according to the
Lrated
lamp data sheet (in W);
P P is the measured lamp power in the circuit with reference ballast (in W);
lref Lref meas
Light is the light output of the reference lamp connected to the reference ballast measured
ref
by photocell meter reading;
Light is the light output of the reference lamp connected to the controlgear under test
test
measured by photocell meter reading.
5.6 Calculation of the efficiency of electronic controlgear
For the calculation of the efficiency of electronic controlgear, Equation (5) should be used:
P Light
P
Lrated Lref meas test
η ×
(5)
controlgear
P P Light
tot ref
tot meas ref
5.7 Measuring the standby power
Standby power is measured for those controlgear which are permanently connected to the
mains where the lamps are switched off via a control signal. Other controlgear do not have to
be tested. The measurement setup is described in Figure A.3.
The measurement of standby power of electronic controlgear shall be performed according to
IEC 63103. For multi-number-lamp controlgear, all lamps shall be connected. The standby
power shall be measured at the rated supply voltage.
5.8 Measuring the networked standby power
The measurement of networked standby power of electronic controlgear shall be performed
according to IEC 63103. For multi-number-lamp controlgear, all lamps shall be connected. The
networked standby power shall be measured at the rated supply voltage.
==
5.9 Reporting of power measurements
Power measurements shall be reported in W with the minimum following resolution:
– ≥ 10 W: whole number;
– > 1 W and < 10 W: first decimal digit;
– ≤ 1 W: two decimal digits.
– 16 – IEC 62442-1:2022 RLV © IEC 2022
Annex A
(normative)
Energy performance measurement set-up
A.1 Measurement set-up for electromagnetic controlgear
For the measurement of the total input power of electromagnetic controlgear and the
measurement of the lamp power, the measurement set-up of Figure A.1 should be used.
Figure A.1 – Measurement of electromagnetic controlgear-lamp circuits
A.2 Measurement set-up for electronic controlgear
A.2.1 Measurement of the total input power
For the measurement of the total input power of electronic controlgear, the measurement of the
lamp power and the light output, the measurement set-up of Figure A.2 should be used.
Figure A.2 – Measurement of AC supplied electronic
controlgear-lamp circuits
A.2.2 Measuring method of standby power
The controlgear is connected as shown in Figure A.3; for multi-number-lamp controlgear, all
lamps are connected. Via the control input, a signal is given to switch the lamps off. After
visually checking whether the lamps are switched off, the input power is measured at the rated
supply voltage.
DUT
V
V
Supply
W
W
Control input
IEC
Figure A.3 – Test setup for measuring standby power
A.2.2 Light output measurement
Figure A.3 and Figure A.4 show an example for the light output measurement of fluorescent
lamps.
The sensor view angle shall be large enough to measure the total illuminance of the lamp(s)
including the cathodes.
The distance of the sensor to the lamp(s) shall be at least twice the lamp length in order to
ensure that the error, due to the different contributions of light from the centre of the lamp end,
is a maximum of 0,3 %.
Reference lamp
– 18 – IEC 62442-1:2022 RLV © IEC 2022
Dimensions in millimetres
NOTE The sensors are in a box painted matt black internally to avoid reflected light. Lamps are placed horizontally
for linear double capped fluorescent lamps. For other lamps, the test position according to the relevant lamp data
sheet applies.
Figure A.3 – Side view of light output measurement system
Dimensions in millimetres
Key
A = lamp length
B = 1/2 lamp length
C = 2 × lamp length
Figure A.4 – Top view of light output measurement system
Requirements for positioning in Figure A.3 and Figure A.4 are as follows:
a) Figure A.3 and Figure A.4 are used both for single and two-lamp controlgear.
b) The same figures are used also for multi-number-lamp controlgear (three or four lamps) with
the following provisions.
– The measuring position of the lamps is for four lamps: two lamps next to each other and
two lamps above each other.
– For three-lamp controlgear, the measuring position is in the upper position, two lamps
next to each other, and in the lower position, one lamp in the centre.
The minimum distance from the light sensor to the lamp is set at least at 1 m. However, the
sensor shall cover at least the lamp length plus 20 % of the lamp length.
For an amalgam lamp, the reference measurements and test measurements shall always be
taken in the same position.
A.2.3 Distance to lamp related to lamp length: explanations
For comparison of the light output measurement with the reference ballast and the light output
measurement with the controlgear under test, the light output measurement shall cover the
entire lamp surface. HF operation lamps may can be operated with 'hot' or with 'cold' electrodes.
This will lead to a different light contribution from the lamp ends. It is therefore important that
the light from the lamp ends and the light from the middle part of the lamp is weighed equally.
The necessary condition is that the sensor is placed at the correct distance from the lamp. This
can be achieved by placing the sensor as shown in Figure A.5.
The test position of the lamps shall be in accordance with the given position in the relevant
lamp standard IEC 60081 or IEC 60901.
The sensor signal X results from the luminosity Φx from the middle of the lamp, the sensor
signal X´ results from the luminosity Φx´ from the end of the lamp. The sensor signal resulting
from the luminosity of the lamp is proportional to the inverted square of the distance between
the sensor and the lamp:
X = Φx/R
X´ = Φx´/R´ R´ = R/cos α
The difference between X and X´ resulting from the difference between R and R´ shall be
minimized. When a lamp is operated with 'cold' electrodes the light contribution from the lamp
end will be significantly lower compared with a lamp operated with 'hot' electrodes over a
distance of about 2 cm.
This leads to the following result:
2 2
X´ = (Φx´/R ) cos α
cos α > 0,95
cos α > 0,975 α < 13º, tan α < 0,23
α is 13º (R = 2L).
For the sensor, the angle of the incident radiation has no effect on the sensor signal strength
(within the 13º), therefore no cos α correction is used for the sensor.
When R = 2L, the error due to different contribution in light from the centre of the lamp and the
lamp end is maximum 0,3 %.
Figure A.5 shows the relation between X, X´, R, R´, Φx and Φx´.
NOTE Light output measurements can be done without assistance of an accredited laboratory.
– 20 – IEC 62442-1:2022 RLV © IEC 2022
Figure A.5 – Configuration of lamp and photocell sensor
Annex B
(informative)
Application of the reference ballast when
assessing lamps in electronic operation
B.1 Calculation of the reference ballast impedance
The characteristics of the high frequency reference ballast for lamps in electronic operation are
deduced from the rated lamp voltage and rated lamp current of the relevant lamp data sheet. In
order to achieve the rated values of
...
IEC 62442-1 ®
Edition 3.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Energy performance of lamp controlgear –
Part 1: Controlgear for fluorescent lamps – Method of measurement to determine
the total input power of controlgear circuits and the efficiency of controlgear
Performance énergétique des appareillages de lampes –
Partie 1: Appareillages des lampes à fluorescence – Méthode de mesurage pour
la détermination de la puissance d'entrée totale des circuits d'appareillage et du
rendement des appareillages
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IEC 62442-1 ®
Edition 3.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Energy performance of lamp controlgear –
Part 1: Controlgear for fluorescent lamps – Method of measurement to
determine the total input power of controlgear circuits and the efficiency of
controlgear
Performance énergétique des appareillages de lampes –
Partie 1: Appareillages des lampes à fluorescence – Méthode de mesurage pour
la détermination de la puissance d'entrée totale des circuits d'appareillage et du
rendement des appareillages
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99 ISBN 978-2-8322-1077-0
– 2 – IEC 62442-1:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General . 9
4.1 Ballast lumen factor . 9
4.2 Dimmable controlgear . 10
4.3 Multi-power and/or multi-number-lamp controlgear . 10
4.4 General notes on tests . 10
4.5 Sampling of controlgear for testing . 10
4.6 Size of the test sample. 10
4.7 Conditioning of lamps . 10
4.8 Test voltages and frequencies . 10
4.9 Sensor and network connections . 11
5 Method of measurement and calculation of total input power of controlgear-lamp
circuits and the efficiency of controlgear . 11
5.1 Correction for ballast lumen factor . 11
5.2 Method of measurement . 11
5.3 Measurement and calculation of the total input power of magnetic
controlgear-lamp circuits . 12
5.4 Calculation of the efficiency of electromagnetic controlgear . 12
5.5 Measurement and calculation of the total input power of electronic
controlgear-lamp circuits . 12
5.6 Calculation of the efficiency of electronic controlgear . 14
5.7 Measuring the standby power . 14
5.8 Measuring the networked standby power . 14
5.9 Reporting of power measurements . 14
Annex A (normative) Energy performance measurement set-up . 15
A.1 Measurement set-up for electromagnetic controlgear . 15
A.2 Measurement set-up for electronic controlgear . 15
A.2.1 Measurement of the total input power . 15
A.2.2 Light output measurement . 16
A.2.3 Distance to lamp related to lamp length: explanations . 17
Annex B (informative) Application of the reference ballast when assessing lamps in
electronic operation . 19
B.1 Calculation of the reference ballast impedance . 19
B.2 Method of adjusting the lamp power . 19
Bibliography . 20
Figure A.1 – Measurement of electromagnetic controlgear-lamp circuits . 15
Figure A.2 – Measurement of AC supplied electronic controlgear-lamp circuits . 16
Figure A.3 – Side view of light output measurement system . 16
Figure A.4 – Top view of light output measurement system . 17
Figure A.5 – Configuration of lamp and photocell sensor . 18
Table 1 – Typical nominal electricity supply details for some regions . 11
– 4 – IEC 62442-1:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENERGY PERFORMANCE OF LAMP CONTROLGEAR –
Part 1: Controlgear for fluorescent lamps –
Method of measurement to determine the total input power
of controlgear circuits and the efficiency of controlgear
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,
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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
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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.
IEC 62442-1 has been prepared by subcommittee 34C: Auxiliaries for lamps, of IEC technical
committee 34: Lighting. It is an International Standard.
This third edition cancels and replaces the second edition published in 2018. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) this edition has been harmonized with IEC 62442-2 and IEC 62442-3;
b) the reference to and use of the measurement methods for non-active power consumption in
accordance with IEC 63103 have been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
34C/1545/FDIS 34C/1548/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 62442 series, published under the general title Energy performance
of lamp controlgear, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 62442-1:2022 © IEC 2022
ENERGY PERFORMANCE OF LAMP CONTROLGEAR –
Part 1: Controlgear for fluorescent lamps –
Method of measurement to determine the total input power
of controlgear circuits and the efficiency of controlgear
1 Scope
This part of IEC 62442 defines a measurement and calculation method of the total input power
for controlgear-lamp circuits when operating with their associated fluorescent lamp(s). The
calculation method for the efficiency of the lamp controlgear is also defined. This document
applies to electrical controlgear-lamp circuits consisting only of the controlgear and the lamp(s).
It is intended for use on DC supplies up to 1 000 V and/or AC supplies up to 1 000 V at 50 Hz
or 60 Hz.
NOTE Requirements for testing individual controlgear during production are not included.
This document specifies the measurement method for the total input power and the calculation
method of the controlgear efficiency for all controlgear used for domestic and normal
commercial purposes operating with the following fluorescent lamps:
– double-capped fluorescent lamps (IEC 60081);
– single-capped fluorescent lamps (IEC 60901);
– other general purpose low-pressure mercury fluorescent lamps.
This document does not apply to:
– controlgear which form an integral part of the lamp;
– controllable wire-wound magnetic controlgear.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050-845, International Electrotechnical Vocabulary (IEV) – Part 845: Lighting (available
at http://www.electropedia.org)
IEC 60081:1997, Double-capped fluorescent lamps – Performance specifications
IEC 60081:1997/AMD4:2010
IEC 60901:1996, Single-capped fluorescent lamps – Performance specifications
IEC 60901:1996/AMD5:2011
IEC 60921:2004, Ballasts for tubular fluorescent lamps – Performance requirements
IEC 60929:2011, AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
IEC 63103:2020, Lighting equipment – Non-active mode power measurement
IEC TS 63105, Lighting systems and related equipment – Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-845 and
IEC TS 63105 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
nominal value
suitable approximate quantity value used to designate or identify a component, device or
equipment
Note 1 to entry: To express the "nominal value" of a particular quantity, the term "value" is replaced by the quantity
name; for example, nominal power, nominal voltage, and nominal current.
3.2
rated value
value of a quantity, used for specification purposes, declared by the manufacturer or
responsible vendor and established under standard test conditions
Note 1 to entry: To express the "rated value" of a particular quantity, the term "value" is replaced by the quantity
name; for example, rated power, rated voltage, rated current, and rated temperature.
Note 2 to entry: For the different kinds of operation, rated electrical values are given on the lamp data sheets as:
− rated electrical values under "electrical characteristics", if the lamp is defined for 50 Hz/60 Hz operation only;
− rated electrical values under "electrical characteristics", if the lamp is defined for high frequency (≥ 20 kHz)
operation only;
− rated electrical values and typical electrical values, if the lamp is defined simultaneously for 50 Hz/60 Hz
operation and high frequency operation:
• for 50 Hz/60 Hz operation: rated electrical values under "electrical characteristics", and
• for high frequency operation: rated electrical values under "typical lamp characteristics".
[SOURCE: IEC 60050-845:2020, 845-27-100, modified – The note 2 to entry has been replaced
by a new Note 2 to entry.]
3.3
controlgear
one or more components between the supply and one or more lamps which can serve to
transform the supply voltage, limit the current of the lamp(s) to the required value, provide
starting voltage and preheating current, prevent cold starting, correct power factor or reduce
radio interference
3.4
electromagnetic controlgear
magnetic controlgear
controlgear which by means of inductance, or a combination of inductance and capacitance,
serves mainly to limit the current of the electric lamp(s)
[SOURCE: IEC 60050-845:2020, 845-28-052, modified – The second preferred term has been
added.]
– 8 – IEC 62442-1:2022 © IEC 2022
3.5
electronic controlgear
AC invertor supplied with alternating current and/or direct current and including stabilizing
elements for starting and operating one or more tubular fluorescent lamps, generally at high
frequency
3.6
fluorescent lamp
discharge lamp of the low pressure mercury type, in which most of the light is emitted by one
or several layers of phosphors excited by the ultra-violet radiation from the discharge
3.7
controlgear-lamp circuit
electrical circuit, or part thereof, normally built in a luminaire, consisting of the controlgear and
lamp(s)
3.8
reference ballast
special ballast, either inductive for lamps for operation on AC mains frequencies, or resistive
for lamps for operation on high frequency
Note 1 to entry: A reference ballast is 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.
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 IEC 60929
and IEC 60921.
Note 2 to entry: Annex B provides details for calculating the reference ballast characteristics and the method of
operation with the reference ballast.
3.9
reference lamp
lamp selected for testing controlgear which, when associated with a reference controlgear, has
electrical characteristics which are close to the rated values or typical lamp characteristics as
stated in the relevant lamp standard
Note 1 to entry: For details regarding the tolerances, see Clause B.2.
3.10
lamp rated power
P
Lrated
power of a given lamp type specified by the manufacturer or the supplier, the lamp being
operated under specified conditions
Note 1 to entry: The rated power of a lamp is expressed in W.
3.11
ballast lumen factor
BLF
ratio of the light output of the reference lamp when the ballast under test is operated at its rated
voltage, compared with the light output of the same lamp operated with the appropriate
reference ballast supplied at its rated voltage and frequency
3.12
total input power
total power consumed by the controlgear-light source circuit measured at rated input voltage
3.13
controlgear efficiency
η
CG
ratio of the output power to the lamp(s) and the total input power of the controlgear
Note 1 to entry: Loads from sensors, network connections and other auxiliary are disconnected or, if not possible,
otherwise eliminated from the result.
3.14
multi-power-lamp controlgear
controlgear designed to operate one or more lamp(s) with different rated powers
3.15
multi-number-lamp controlgear
controlgear designed to operate simultaneously more than one similar lamp
3.16
standby mode
mode when the equipment is connected to a supply voltage with the
illumination function off, while capable of being activated by an external trigger not being a
trigger from a network
Note 1 to entry: Examples of external triggers are sensing or timing.
[SOURCE: IEC 63103:2020, 3.10, modified – The domain "" has been
replaced with "".]
3.17
networked standby mode
mode when the equipment is connected to a supply voltage with the
illumination function off, while capable of being activated by an external trigger being a trigger
from a network
[SOURCE: IEC 63103:2020, 3.11, modified – The domain "" has been
replaced with "".]
3.18
standby power
average power consumption in the standby mode
3.19
networked standby power
average power consumption in the networked standby mode
4 General
4.1 Ballast lumen factor
For every controlgear-lamp combination submitted for the test, the ballast lumen factor shall be
measured. The ballast lumen factor is defined in 3.11 and expressed as:
Light
test
BLF=
(1)
Light
ref
– 10 – IEC 62442-1:2022 © IEC 2022
where
Light is the light output of the reference lamp connected to the reference ballast measured
ref
by photocell meter reading;
Light is the light output of the reference lamp connected to the controlgear under test
test
measured by photocell meter reading.
The ballast lumen factor shall be in the range of 0,925 to 1,075. A controlgear with a lower
ballast lumen factor is not suitable for testing. The upper limit of 1,075 may be exceeded, if the
value for maximum lamp operation current and maximum current in any lead to cathodes comply
with the rated value in IEC 60081 and IEC 60901.
4.2 Dimmable controlgear
A sufficient cathode temperature shall be produced by the heating circuit at any possible
dimming position within the available dimming range of the controlgear as specified in the
relevant data sheet in IEC 60081 and IEC 60901.
Dimmable controlgear shall be measured at 100 % and 25 % lumen output of the operated
lamp(s).
4.3 Multi-power and/or multi-number-lamp controlgear
Multi-power and multi-number-lamp controlgear shall be measured with all the possible lamp
power and number of lamp combinations. The manufacturer shall declare the relevant BLF for
each combination.
4.4 General notes on tests
The measurement conditions specified in IEC 60921:2004 or IEC 60929:2011, Annex A shall
be applied, unless otherwise specified in this document.
For measurement uncertainty and traceability see ISO/IEC Guide 98-3 and IEC Guide 115.
4.5 Sampling of controlgear for testing
The requirements and tolerances specified in this document are based on the testing of a type
test sample submitted by the manufacturer for that purpose. This sample should consist of units
having characteristics typical of the manufacturer's production and be as close to the production
centre point values as possible.
4.6 Size of the test sample
Tests are carried out with one test specimen.
4.7 Conditioning of lamps
Lamps shall be handled and stabilized as described in IEC 60081:1997, B.1.1 and
IEC 60081:1997/AMD4:2010, B.1.1 and in IEC 60901:1996, B.1.1 and
IEC 60901:1996/AMD5:2011, B.1.1.
4.8 Test voltages and frequencies
Where the test voltage and frequency are not defined by national or regional requirements, the
test voltage and the test frequency shall be the nominal voltage and the nominal frequency of
the country or region for which the measurement is being determined (refer to Table 1).
Table 1 – Typical nominal electricity supply details for some regions
a, c
Country or region Rated voltage and frequency
Europe 230 V, 50 Hz
North America 120 V, 277 V, 60 Hz
b
100 V, 200 V, 50/60 Hz
Japan
China 220 V, 50 Hz
Australia and New Zealand 230 V, 50 Hz
South Africa 230 V, 50 Hz
a
Values are for single phase only. Some single phase supply voltages can be double the nominal voltage above
(centre transformer tap). The voltage between two phases of a three-phase system is 1,73 times single phase
values (e.g. 400 V for Europe).
b
50 Hz is applicable for the Eastern part and 60 Hz for the Western part.
c
If the manufacturer advises that for a marked voltage range a discrete value shall be used for measurement,
this should be observed.
The above table can require test voltages additional to those required in IEC 63103.
4.9 Sensor and network connections
For the measurement of all kinds of controlgear power (also standby) the power consumed by
all circuits (internal or external) shall be considered as indicated in IEC 63103.
NOTE Although the scope of IEC 63103 is limited to non-active mode power, the principle is also suitable for other
power measurements.
5 Method of measurement and calculation of total input power of
controlgear-lamp circuits and the efficiency of controlgear
5.1 Correction for ballast lumen factor
The total input power measured is corrected to a BLF of 0,95 for wire-wound magnetic
controlgear and of 1,00 for high frequency (HF) electronic controlgear. Additionally, tolerances
of reference lamps are compensated.
5.2 Method of measurement
The measurements are carried out with the power meter connected to measure the total input
power into the controlgear-lamp circuit, using:
– for electromagnetic controlgear-lamp circuits:
the conditions specified in IEC 60921:2004, A.6.1 and the test circuit of Figure A.1;
– for AC supplied electronic controlgear-lamp circuits:
the conditions specified in IEC 60921:2004, A.6.2, as far as applicable, and the test circuit
of Figure A.2.
The value of the total input power (P ) is recorded when a steady state has been reached
tot meas
(controlgear temperature and lamp current stabilized).
The measurements with the controlgear under test in the controlgear-lamp circuit shall be made
with the rated supply voltage. The value P of a reference lamp, in some cases, may deviate
Lrated
from the nominal value of the lamp.
– 12 – IEC 62442-1:2022 © IEC 2022
5.3 Measurement and calculation of the total input power of magnetic
controlgear-lamp circuits
The total input power (P ) of a controlgear-lamp circuit is measured with one controlgear
tot meas
and one reference lamp (or the number of reference lamps the controlgear is designed to
operate). The reference lamps shall conform to IEC 60921:2004, Annex D; in addition the lamp
current shall not deviate by more than 1 % of the rated lamp current.
The measured total input power (P ) is corrected to a BLF of 0,95 and corresponds to
tot meas
that value that would be given by the reference lamp with rated setting in order to minimize the
error caused by the variation of the characteristics of the reference lamps used.
The corrected total input power of the ballast-lamp circuit (P ) is calculated using the
tot ref
following Equation (2):
P
Lref meas
PP 0,95−−P P
( ) (2)
Lref meas Lrated
tot ref tot meas
P
Lmeas
where
P is the total input power of the controlgear-lamp circuit under test corrected to
tot ref
comparable reference conditions (in W);
P is the measured total input power into the controlgear-lamp circuit under test (in W);
tot meas
P is the measured lamp power in the circuit with the reference ballast (in W);
Lref meas
P is the measured lamp power in the circuit with the test controlgear (in W);
Lmeas
P is the rated lamp power of the relevant reference lamp according to the lamp data
Lrated
sheet (in W).
5.4 Calculation of the efficiency of electromagnetic controlgear
The ballast lumen factor of 0,95 for the light output of lamps operated with electromagnetic
controlgear requires the calculation of the efficiency of the magnetic controlgear using
Equation (3):
P
Lrated
η = 0,95
(3)
controlgear
P
tot ref
5.5 Measurement and calculation of the total input power of electronic
controlgear-lamp circuits
The total input power (P ) of a controlgear-lamp circuit is measured with one controlgear
tot meas
and one reference lamp (or the number of reference lamps the controlgear is designed to
operate). The reference lamps shall conform to IEC 60929:2011, Annex C; in addition the lamp
current shall not deviate by more than 1 % of the rated lamp current. The measurement set-up
is described in Annex A.
The comparison between the controlgear circuit with the controlgear under test and the
controlgear-lamp circuit with reference ballast in accordance with, as far as applicable,
IEC 60921:2004, A.6.1 or A.6.2 is made with the same reference lamp using a photocell
positioned as shown in Figure A.3 and Figure A.4 for measuring the light output of the lamp.
The measurements are carried out using the test circuit specified in Figure A.1.
=
Measurement in the Ulbricht sphere is accepted as an alternative to the ones specified in
Figure A.3. The diameter of the sphere should be at least A + 200 mm. For parameter A, see
Figure A.4 In case of doubt, the measurement using the photocell (Figure A.2) should serve as
reference.
NOTE With electronic controlgear, measurements of power losses of the controlgear itself cannot be measured
accurately. Therefore, only the total input power method (measuring whole ballast-lamp circuits) can be carried out.
The high frequency lamp current should be obtained with a tolerance of ±1 % to that specified
for the rated current in the lamp standard. At the end of this procedure, the measured high
frequency lamp power (P ) shall be within ±2,5 % of the rated power of the lamp (see
Lref meas
electrical characteristics on lamp data sheets).
After reaching stable conditions (controlgear temperature and lamp current stabilized), the
measured value with the photocell is set at 100 %.
Under the same test conditions (positioning of the lamp and photocell unchanged), the
controlgear under test is connected to the lamp circuit and operated until stable conditions again
are reached.
The ratio of the light output of the lamp measured via the photocell, when connected to the
controlgear under test, to the light output of the lamp, when connected to the reference ballast,
shall be at least 92,5 %.
The total input power (P ) at the supply input of the controlgear under test is then
tot meas
measured.
The measured total input power (P ) into the controlgear-lamp circuit under test is
tot meas
corrected to a BLF of 1,00 (Light /Light ) and to minimize the error caused by the variation
ref test
of the characteristics of the reference lamp used (P /P ). The total input power
Lrated Lref meas
corrected (P ) of the controlgear-lamp circuit is calculated using the following Equation (4):
tot ref
P Light
Lrated ref
PP= ××
(4)
tot ref tot meas
P Light
Lref meas test
where
P is the total input power of the controlgear-lamp circuit under test corrected to
tot ref
comparable reference conditions (in W);
P is the measured total input power into the controlgear-lamp circuit under test (in W);
tot meas
P is the rated lamp or typical HF power of the relevant reference lamp according to the
Lrated
lamp data sheet (in W);
P is the measured lamp power in the circuit with reference ballast (in W);
Lref meas
Light is the light output of the reference lamp connected to the reference ballast measured
ref
by photocell meter reading;
Light is the light output of the reference lamp connected to the controlgear under test
test
measured by photocell meter reading.
– 14 – IEC 62442-1:2022 © IEC 2022
5.6 Calculation of the efficiency of electronic controlgear
For the calculation of the efficiency of electronic controlgear, Equation (5) should be used:
P Light
P
Lrated Lref meas test
η ×
(5)
controlgear
P P Light
tot ref
tot meas ref
5.7 Measuring the standby power
The measurement of standby power of electronic controlgear shall be performed according to
IEC 63103. For multi-number-lamp controlgear, all lamps shall be connected. The standby
power shall be measured at the rated supply voltage.
5.8 Measuring the networked standby power
The measurement of networked standby power of electronic controlgear shall be performed
according to IEC 63103. For multi-number-lamp controlgear, all lamps shall be connected. The
networked standby power shall be measured at the rated supply voltage.
5.9 Reporting of power measurements
Power measurements shall be reported in W with the minimum following resolution:
– ≥ 10 W: whole number;
– > 1 W and < 10 W: first decimal digit;
– ≤ 1 W: two decimal digits.
==
Annex A
(normative)
Energy performance measurement set-up
A.1 Measurement set-up for electromagnetic controlgear
For the measurement of the total input power of electromagnetic controlgear and the
measurement of the lamp power, the measurement set-up of Figure A.1 should be used.
Figure A.1 – Measurement of electromagnetic controlgear-lamp circuits
A.2 Measurement set-up for electronic controlgear
A.2.1 Measurement of the total input power
For the measurement of the total input power of electronic controlgear, the measurement of the
lamp power and the light output, the measurement set-up of Figure A.2 should be used.
– 16 – IEC 62442-1:2022 © IEC 2022
Figure A.2 – Measurement of AC supplied electronic
controlgear-lamp circuits
A.2.2 Light output measurement
Figure A.3 and Figure A.4 show an example for the light output measurement of fluorescent
lamps.
The sensor view angle shall be large enough to measure the total illuminance of the lamp(s)
including the cathodes.
The distance of the sensor to the lamp(s) shall be at least twice the lamp length in order to
ensure that the error, due to the different contributions of light from the centre of the lamp end,
is a maximum of 0,3 %.
Dimensions in millimetres
NOTE The sensors are in a box painted matt black internally to avoid reflected light. Lamps are placed horizontally
for linear double capped fluorescent lamps. For other lamps, the test position according to the relevant lamp data
sheet applies.
Figure A.3 – Side view of light output measurement system
Dimensions in millimetres
Key
A = lamp length
B = 1/2 lamp length
C = 2 × lamp length
Figure A.4 – Top view of light output measurement system
Requirements for positioning in Figure A.3 and Figure A.4 are as follows:
a) Figure A.3 and Figure A.4 are used both for single and two-lamp controlgear.
b) The same figures are used also for multi-number-lamp controlgear (three or four lamps) with
the following provisions.
– The measuring position of the lamps is for four lamps: two lamps next to each other and
two lamps above each other.
– For three-lamp controlgear, the measuring position is in the upper position, two lamps
next to each other, and in the lower position, one lamp in the centre.
The minimum distance from the light sensor to the lamp is set at least at 1 m. However, the
sensor shall cover at least the lamp length plus 20 % of the lamp length.
For an amalgam lamp, the reference measurements and test measurements shall always be
taken in the same position.
A.2.3 Distance to lamp related to lamp length: explanations
For comparison of the light output measurement with the reference ballast and the light output
measurement with the controlgear under test, the light output measurement shall cover the
entire lamp surface. HF operation lamps can be operated with 'hot' or with 'cold' electrodes.
This will lead to a different light contribution from the lamp ends. It is therefore important that
the light from the lamp ends and the light from the middle part of the lamp is weighed equally.
The necessary condition is that the sensor is placed at the correct distance from the lamp. This
can be achieved by placing the sensor as shown in Figure A.5.
The test position of the lamps shall be in accordance with the given position in the relevant
lamp standard IEC 60081 or IEC 60901.
– 18 – IEC 62442-1:2022 © IEC 2022
The sensor signal X results from the luminosity Φx from the middle of the lamp, the sensor
signal X´ results from the luminosity Φx´ from the end of the lamp. The sensor signal resulting
from the luminosity of the lamp is proportional to the inverted square of the distance between
the sensor and the lamp:
X = Φx/R
X´ = Φx´/R´ R´ = R/cos α
The difference between X and X´ resulting from the difference between R and R´ shall be
minimized. When a lamp is operated with 'cold' electrodes the light contribution from the lamp
end will be significantly lower compared with a lamp operated with 'hot' electrodes over a
distance of about 2 cm.
This leads to the following result:
2 2
X´ = (Φx´/R ) cos α
cos α > 0,95
cos α > 0,975 α < 13º, tan α < 0,23
α is 13º (R = 2L).
For the sensor, the angle of the incident radiation has no effect on the sensor signal strength
(within the 13º), therefore no cos α correction is used for the sensor.
When R = 2L, the error due to different contribution in light from the centre of the lamp and the
lamp end is maximum 0,3 %.
Figure A.5 shows the relation between X, X´, R, R´, Φx and Φx´.
NOTE Light output measurements can be done without assistance of an accredited laboratory.
Figure A.5 – Configuration of lamp and photocell sensor
Annex B
(informative)
Application of the reference ballast when
assessing lamps in electronic operation
B.1 Calculation of the reference ballast impedance
The characteristics of the high frequency reference ballast for lamps in electronic operation are
deduced from the rated lamp voltage and rated lamp current of the relevant lamp data sheet. In
order to achieve the rated values of the reference ballast, twice the rated lamp voltage is
adjusted to the high frequency power supply. The rated current value, if not given on the lamp
data sheet, should be provided by the lamp manufacturer. The value of the low inductance serial
resistor is calculated from the rated lamp voltage and the rated lamp current. Definition 3.2
should be taken into consideration in this respect.
B.2 Method of adjusting the lamp power
The reference ballast is represented with a low inductive resistor, which is calculated according
to Clause B.1 by taking into consideration definition 3.2.
After stabilization, the HF supply voltage is adjusted until the high frequency lamp current is
within a tolerance of ±1 % to that specified in the lamp standard. At the end of this procedure,
the measured high frequency lamp power (P ) shall be within ±2,5 % of the rated or
Lref meas
typical value.
– 20 – IEC 62442-1:2022 © IEC 2022
Bibliography
IEC 62442-2, Energy performance of lamp controlgear ‒ Part 2: Controlgear for discharge
lamps (excluding low-pressure mercury fluorescent lamps) ‒ Method of meas
...
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