IEC 62442-3:2022

IEC 62442-3 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Energy performance of lamp controlgear –
Part 3: Controlgear for tungsten-halogen lamps and LED light sources – Method
of measurement to determine the efficiency of controlgear
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IEC 62442-3 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Energy performance of lamp controlgear –
Part 3: Controlgear for tungsten-halogen lamps and LED light sources – Method of
measurement to determine the efficiency of controlgear
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.99 ISBN 978-2-8322-5327-4

– 2 – IEC 62442-3:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General . 10
4.1 Applicability .
4.1 General notes on tests . 10
4.2 Controllable controlgear . 10
4.3 Measurement uncertainty . 10
4.4 Sampling of controlgear for testing . 10
4.5 Size of the test sample. 11
4.6 Power supply . 11
4.7 Supply voltage waveform . 11
4.8 Substitution load . 11
4.9 Thermocouple and temperature indicator . 12
4.10 Instrument accuracy . 12
4.11 Measuring circuits . 12
4.12 Multi-rated voltage controlgear . 13
4.13 Multi-power controlgear . 13
4.14 Sensor and network connections . 13
5 Method of measurement and calculation of the efficiency of controlgear
(transformer, convertor) for tungsten-halogen lamps and for LED light sources . 13
5.1 Measurement set-up: input and output power . 13
5.2 Efficiency calculation for electromagnetic (transformer) and electronic
(convertor) controlgear. 14
5.3 Measurement set-up: input power in no-load mode . 15
5.4 Standby power measurement of convertor-electronic controlgear . 16
5.5 Networked standby power measurement . 17
5.6 Reporting of power measurements . 17
Bibliography . 18

Figure 1 – Power losses measurement set-up for electromagnetic controlgear
(transformer) and input and output power measurement set-up for convertor (electronic
controlgear) . 14
Figure 2 – Input power in no-load mode measurement setup for electromagnetic
controlgear (transformer) and for convertor (electronic controlgear) .
Figure 3 – Measurement setup of the standby power of convertor-electronic
controlgear .

Table 1 – Typical nominal electricity supply details for some regions . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENERGY PERFORMANCE OF LAMP CONTROLGEAR –

Part 3: Controlgear for tungsten-halogen lamps and LED light sources –
Method of measurement to determine the efficiency of controlgear

FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 62442-3:2018. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

– 4 – IEC 62442-3:2022 RLV © IEC 2022
IEC 62442-3 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 62442-1 and IEC 62442-2;
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/1547/FDIS 34C/1550/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.

ENERGY PERFORMANCE OF LAMP CONTROLGEAR –

Part 3: Controlgear for tungsten-halogen lamps and LED light sources –
Method of measurement to determine the efficiency of controlgear

1 Scope
This part of IEC 62442 defines a measurement method for the power losses of electromagnetic
transformers as well as the power losses and the standby power of electronic convertors for
tungsten-halogen lamps and for LED light source(s).
This part of IEC 62442 defines measurement and calculation methods for specifying the
efficiency and the standby power of controlgear for tungsten-halogen lamps and LED light
sources.
NOTE 1 This includes electromagnetic transformers and electronic convertors for tungsten-halogen lamps, as well
as electronic controlgear for LED light source(s).
NOTE 2 The term "LED light sources" includes LED modules and LED lamps.
This document is applicable for controlgear designed 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.
A calculation method of the efficiency of the mentioned controlgear for tungsten-halogen lamps
and LED light source(s) is also defined.
This document applies to electrical controlgear-lamp circuits comprised solely of the controlgear
and of the lamp(s) (LED light sources).
For multipurpose power supplies only the lighting part will be considered.
NOTE 3 Requirements for testing individual controlgear during production are not included.
This document specifies the measurement method for the total input power, the standby power
and the calculation method of the controlgear efficiency for all controlgear sold for domestic
and normal commercial purposes operating with tungsten-halogen lamps and LED light
source(s). The term "LED light sources" includes LED modules and LED lamps.
This document does not apply to:
– controlgear which form an integral part of lamps (LED light sources);
– controlgear circuits with capacitors connected in series;
– controllable electromagnetic 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)

– 6 – IEC 62442-3:2022 RLV © IEC 2022
IEC 61047:2004, DC or AC supplied electronic step-down convertors for filament lamps –
Performance requirements
IEC 61347-1:2015, Lamp controlgear – Part 1: General and safety requirements
IEC 61347-2-2, Lamp controlgear – Part 2-2: Particular requirements for DC or AC supplied
electronic step-down convertors for filament lamps
IEC 61347-2-13, Lamp controlgear – Part 2-13: Particular requirements for DC or AC supplied
electronic controlgear for LED modules
IEC 61558-1, Safety of transformers, reactors, power supply units and combinations thereof –
Part 1: General requirements and tests
IEC 61558-2-6, Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V – Part 2-6: Particular requirements and tests for safety isolating
transformers and power supply units incorporating safety isolating transformers
IEC 62301:2011, Household electrical appliances – Measurement of standby power
IEC 63103:2020, Lighting equipment – Non-active mode power measurement
IEC TS 63105:2021, Lighting systems and related equipment – Vocabulary
IEC Guide 115:20072021, Application of uncertainty of measurement to conformity assessment
activities in the electrotechnical sector
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.
[SOURCE: IEC 62442-1:20182022, 3.1]
3.2
rated value
quantity value for specified operating conditions of a component, device or equipment
Note 1 to entry: The value and conditions are specified in the relevant standard or assigned by the manufacturer
or responsible vendor.
[SOURCE: IEC 62442-1:2018, 3.3, modified – Note 2 has been deleted.]

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.
[SOURCE: IEC 60050-845:2020, 845-27-100, modified – Note 2 to entry has been deleted.]
3.3
controlgear
one or more components between supply and one or more lamps (LED light source(s)) which
may serve to transform the supply voltage, limit the current of the lamp(s) (LED light source(s))
to the required value, the correct power factor or reduce radio interference
[SOURCE: IEC 62442-1:2018, 3.4 modified – “provide starting voltage and preheating current,
prevent cold starting” has been deleted and "(LED light source(s))" has been added.]
unit inserted between the power supply and at least one light
source, which serves to supply the light source(s) with its (their) rated voltage or rated current,
and which can consist of one or more separate components
Note 1 to entry: A controlgear can include means for igniting, dimming, correcting the power factor and suppressing
radio interference, and further control functions.
Note 2 to entry: A controlgear can consist of a power supply and a control unit.
Note 3 to entry: A controlgear can be partly or totally integrated in the light source.
[SOURCE: IEC 60050-845:2020, 845-28-048, modified – Note 4 to entry has been deleted.]
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 lamp(s) (LED light source(s)) to the required value and
operates the lamp(s) at the same frequency as the supply frequency
[SOURCE: IEC 62442-1:2018, 3.5, modified – "(LED light source(s))" has been added.]
3.4
electromagnetic transformer
magnetic transformer
transformer
electromagnetic controlgear which transforms the supply voltage to operate lamp(s) (LED light
source(s)) with the same frequency as the supply frequency at the lamps (light sources) rated
voltage
3.5
electronic controlgear
AC and/or DC supplied electronic circuit including
stabilizing elements for operating one or more filament lamp(s) or one or more LED light sources
controlgear comprised of semiconductors and other electronic components
3.7
electronic step-down convertor
convertor
unit inserted between the supply and one or more tungsten-halogen or other filament lamps
which serves to supply the lamp(s) with its (their) rated voltage, generally at high frequency

– 8 – IEC 62442-3:2022 RLV © IEC 2022
Note 1 to entry: The unit may consist of one or more separate components and may include means for dimming,
correcting the power factor and suppressing radio interference.
[SOURCE: IEC 61347-2-2:2011, 3.1, modified – Additional information has been transferred
to a note to entry.]
3.8
controlgear for LED light sources
3.8.1
electronic controlgear for LED light sources
convertor
unit inserted between the supply and one or more LED light sources which serves to supply the
LED light source(s) with its (their) rated voltage or rated current
Note 1 to entry: The unit may consist of one or more separate components and may include means for dimming,
correcting the power factor and suppressing radio interference, and further control functions
Note 2 to entry: The controlgear consists of a power supply and a control unit.
Note 3 to entry: The controlgear may be partly or totally integrated in the LED module.
Note 4 to entry: When there is no risk of confusion, as in a LED standard for example, “controlgear” may also be
used. Both terms “controlgear” or “control gear” are acceptable.
[SOURCE: IEC 61347-2-13:2014, 3.1, modified – “LED modules” has been replaced with “LED
light sources” and Note 4 has been added.]
3.8.2
power supply of the controlgear
electronic device, being part of the controlgear, capable of controlling current, voltage or power
within design limits and containing no additional LED control capabilities
Note 1 to entry: For LEDsi modules, the power supply of the controlgear is separate from the LED module on a
distant location.
Note 2 to entry: The energy source of a power supply can be either a battery or the electrical supply system.
3.8.3
control unit of the controlgear
electronic device, being part of the controlgear, responsible for controlling the electrical energy
to the LED light sources as well as colour mixing, response to depreciating luminous flux and
further performance features
Note 1 to entry: In LEDsi modules, the control unit of the controlgear is on board the LED module and separate
from the power supply of the controlgear.
3.6
controlgear-light source circuit
electrical circuit, or part thereof, normally built in a luminaire, consisting of the controlgear and
light source(s)
[SOURCE: IEC 62442-1:20182022, 3.8 3.7, modified – "lamp" has been replaced with "light
source".]
3.7
standby mode
mode of the controlgear, in which the light source is switched off by a control signal, while the
controlgear remains connected to the mains supply not including failed lamp(s) or light
source(s)
Note 1 to entry: Failed light source(s) could lead to incorrect measurements.

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 "".]
3.8
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 "".]
3.9
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.
3.10
networked standby power
average power consumption in the networked standby mode
3.11
no-load mode
mode relevant for those controlgear which are permanently connected to the mains, where the
lamp(s) or light source(s) are switched off via a switch on the output circuit of the controlgear
mode when the equipment is connected to a supply voltage where all loads
are disconnected from the controlgear
3.12
total input power
total power consumed by the controlgear-lamp (light source) controlgear-light source circuit
measured at rated input voltage
[SOURCE: IEC 62442-1:2018, 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
CG
ratio of the output power to lamp(s) (light source) and
the 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 or other auxiliaries are disconnected or, if not possible,
otherwise, eliminated from the result.

– 10 – IEC 62442-3:2022 RLV © IEC 2022
3.14
controllable controlgear
controlgear whose light sources operating characteristics can be changed by means of a signal
via mains or extra control input(s)
Note 1 to entry: Signal control is either wired or wireless.
4 General
4.1 Applicability
The measurement and calculation methods in this document shall only be used for magnetic
transformers which conform to IEC 61558-1 and IEC 61558-2-6 or for electronic convertors
which conform to IEC 61347-2-2 or for electronic controlgear for LED modules which conforms
to IEC 61347-2-13.
4.1 General notes on tests
The measurement conditions specified in IEC 61347-1:2015, Clauses H.1, H.2, H.4, H.8 and
H.11 shall be applied unless otherwise specified in this document. The device under test (DUT)
shall be placed according to IEC 61347-1:2015, Figure H.1.
An AC or DC voltage source shall be used to provide input voltage to the DUT. During the tests,
the supply voltage and the frequency shall be maintained constant within ±0,5 % during the
warm-up period. However, during the actual measurement, the voltage shall be adjusted to
within ±0,2 % of the specified testing value.
The input voltage source should be capable of delivering at least three times the input power
of the DUT.
Unless otherwise specified in IEC 63103, stability of the measurement values (V, A or W) is
given if the data does not deviate by more than 1 % in a time frame of 15 min. However, if any
of these values vary with time, the power is determined as the arithmetic mean value over a
sufficient period.
4.2 Controllable controlgear
In the case of controllable controlgear the test shall be carried out with the maximum output
power.
In case a controlgear has multiple channels, each channel shall be set at the same power level.
The sum of the power per channel shall be equal to the maximum allowed output power of the
controlgear.
Requirements relevant for the efficiency during the dimming condition of controllable
controlgear are under consideration.
4.3 Measurement uncertainty
Measurement uncertainty shall be managed in accordance with the accuracy method in
IEC Guide 115:20072021, 4.4.3.
4.4 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.

4.5 Size of the test sample
Tests are carried out with one test specimen.
4.6 Power supply
Test voltage(s) and test frequency(ies) 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).
Where the test voltage and frequency are not defined by national or regional requirements, the
controlgear manufacturer shall declare the nominal voltage(s) at which the given efficiency is
valid.
Table 1 – Typical nominal electricity supply details for some regions
a
Country or region Nominal 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.

The above table can require test voltages additional to those required in IEC 63103.
4.7 Supply voltage waveform
The total harmonic content of the supply voltage when supplying the DUT shall not exceed 3 %;
harmonic content is defined as the root-mean-square (RMS) summation of the individual
th
components up to the 40 harmonic using the fundamental as 100 %.
The ratio of peak value to RMS value of the test voltage (i.e. crest factor) shall be between 1,34
and 1,49.
4.8 Substitution load
To give reproducible measurement results, a resistor R shall be used as a replacement for
load
the lamp(s) (light source(s)). R is determined from the rated output power and the rated
load
output voltage or rated output current of the controlgear.
During the test, R shall be within 1% of the calculated resistance.
load
For electronic controlgear for LED light sources, a pure resistive load may cause malfunction
of the DUT. In these cases a combination of diodes and variable resistor equivalent to the LED
light source shall be used, to ensure the maximum rated output current at the rated output
voltage.
NOTE When a special starting procedure is used to allow the constant current controlgear to function properly, the
method with the equivalent resistor can be used.
For the specification of substitution loads, IEC 63103:2020, 5.3.2 applies.

– 12 – IEC 62442-3:2022 RLV © IEC 2022
NOTE Although the scope of IEC 63103 is limited to non-active mode power, the principle is also suitable for other
power measurements.
In the case of controlgear with an output frequency higher than 70 Hz for tungsten-halogen
lamps, the load shall always be a lamp as indicated in IEC 61047:2004, 4.2.
The measurement setup circuit for constant power controlgear shall also be used in a suitable
way with the current defined in the data sheets of the lamp(s) (LED light source(s)).
4.9 Thermocouple and temperature indicator
The resolution of the temperature indicator shall be at least 0,1 °C, when used with the
appropriate thermocouple.
4.10 Instrument accuracy
For electromagnetic transformers, calibrated and traceable AC power meters, power analysers
or digital power meters shall be used. For measurement uncertainty and traceability see
ISO/IEC Guide 98-3:2008 and IEC Guide 115.
For electronic step-down convertors, all output power measurements shall be made with a
calibrated and traceable wideband power analyser or digital power meter.
The power measuring instrument shall be capable of measuring DC and AC 10 Hz to 2 000 Hz
th
components from 10 Hz to a frequency that is at least equal to the 40 harmonic of the test
supply frequency.
For measurements made under the scope of this document, measurement instruments with the
following minimum accuracies shall be used.
a) For frequencies up to and including 1 kHz:
– voltage: 0,5 %
– current: 0,5 %
– power: 1,0 %
– frequency: 0,1 %
b) For frequencies above 1 kHz:
– voltage: 1,0 %
– current: 1,0 %
– power: 2,0 %
The power consumption shall be measured by applying the procedure of IEC 62301:2011, 5.3
excluding 5.3.4.
Stability of the measurement values (V, A or W) is given if the data does not deviate from more
than 1 % in a time frame of 15 min. If any of these values vary with time, the power is determined
as the arithmetic mean value over a sufficient period.
Measurement shall be done in such a way that the line losses are limited (for example with a
four-wire measurement system).
4.11 Measuring circuits
When the controlgear has supplementary connections to the output circuit or sensors (e.g. to
detect fault or temperatures for example to ensure a safe function of the controlgear), all these
sensors and circuits shall be connected as in normal use; sensors or networks which are not
involved in power conversion shall be disconnected (see 4.15).

4.12 Multi-rated voltage controlgear
If a controlgear is designed for more than one rated voltage, the controlgear manufacturer shall
declare the rated voltage(s) at which the given efficiency and the standby power are valid.
4.13 Multi-power controlgear
If a controlgear is designed for more than one output power, the test shall be carried out with
the maximum output power.
4.14 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.
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 63103:2020 is limited to non-active mode power, the principle is also suitable for
other power measurements.
5 Method of measurement and calculation of the efficiency of controlgear
(transformer, convertor) for tungsten-halogen lamps and for LED light
sources
5.1 Measurement set-up: input and output power
Figure 1 shows the set-up for the measurement of the power losses of electromagnetic
controlgear and the input and output power of convertor-electronic controlgear.
U, I, P
U, I, P
DUT
Supply
R
load
voltage
IEC
– 14 – IEC 62442-3:2022 RLV © IEC 2022

Key
DUT device under test
U voltage
I current
P power
substitution load (see 4.9)
R
load
Figure 1 – Power losses measurement set-up for electromagnetic controlgear
(transformer) and input and output power measurement set-up
for convertor (electronic controlgear)
The information regarding the substitution load is given under 4.8. The measurements are
carried out with power meters connected to measure the total input power into and the output
power (lamp (light source) power) (light source power) of the DUT.
The value of the total input power P is recorded when a steady state has been reached
tot meas
(temperature of the DUT).
The supply voltage for the measurement according to Figure 1 is defined in 4.6 and 4.12.
The measurement sequence is as follows:
1) Connect the DUT according to Figure 1.
2) Switch on the mains voltage.
3) Await the thermal equilibrium.
4) Measure the input and the output power.
The total input power P of a DUT is measured on one DUT.
tot meas
P is the measured total input power into the DUT (in W);
tot meas
P is the measured output power of the DUT (lamp (light source) power-power on the
Lamp
substitution resistor) in the test circuit (in W).
In the case of multi output controlgear, P P is the sum of all the power measured
Lamp light source
in each channel.
5.2 Efficiency calculation for electromagnetic (transformer) and electronic
(convertor) controlgear
For the calculation of the efficiency of a DUT (η ), Equation (1) should be used:
CG
P
light source
η = (1)
CG
P
tot meas
For the calculation of the efficiency of a DUT (η ), Equation (1) should be used:
CG
P
light source
η =
(1)
CG
P
tot meas
where
P is the measured total input power into the DUT (in W);
tot meas
P is the measured output power of the DUT
light source
(light source power or substitution resistor power) in the test circuit (in W).
5.3 Measurement set-up: input power in no-load mode
Figure 2 shows the setup for the measurement of the input power losses in no-load mode for
electromagnetic controlgear and for a convertor (electronic controlgear).
U, I, P
DUT
Supply
voltage
IEC
Key
DUT device under test
U voltage
I current
P power
Figure 2 – Input power in no-load mode measurement setup for electromagnetic
controlgear (transformer) and for convertor (electronic controlgear)
The substitution load is disconnected from the DUT-open output circuit (see Figure 2). The
measurements are carried out with a power meter connected to measure the total input power
into the DUT. Measurement of power shall be current correct (i.e. measurement in the DUT
path).
The value of the total input power in no-load mode P is recorded when a steady
tot meas no-load
state has been reached (temperature of the DUT).
The supply voltage for the measurement according to Figure 2 is defined in 4.7 and 4.13.
The measurement sequence is as follows:
1) Connect the DUT according to Figure 2.
2) Switch on the mains voltage.
3) Await the thermal equilibrium.
4) Measure the input power.
The measured total input power in no-load mode P of a DUT is measured on one
tot meas no-load
DUT.
– 16 – IEC 62442-3:2022 RLV © IEC 2022
P is the measured total input power into the DUT (in W) in no-load mode.
tot meas no-load
The measurement of no-load power of electronic controlgear is performed according to
IEC 63103.
NOTE By the definition of "no-load" it is given that loads of any sort are disconnected from the controlgear.
5.4 Standby power measurement of convertor-electronic controlgear
Figure 3 shows the measurement setup of the standby power of convertor-electronic
controlgear.
Interface port
U, I, P
DUT
Supply
voltage
R
load
IEC
Key
DUT device under test
U voltage
I current
P power
R substitution load
load
Figure 3 – Measurement setup of the standby power
of convertor-electronic controlgear
Information regarding the substitution load is given under 4.9.
The measurements are carried out with a power meter connected to measure the total input
power into the convertor-electronic controlgear. Measurement of power shall be current correct
(i.e. measurement in the DUT path).
The value of the standby power P (total input power) is recorded when a steady state
CGstandby
has been reached (temperature of the convertor-electronic controlgear).
The supply voltage for the measurement according to Figure 3 is defined in 4.7 and 4.13.
The measurement sequence is as follows:
1) Connect the DUT according to Figure 3.
2) Switch on the mains voltage.
3) Set the controlgear via the interface port (for example “digital addressable lighting
interface”) to the standby mode.
4) Await the thermal equilibrium.
5) Measure the standby power (total input power).
The standby power P (total input power) of a convertor-controlgear is measured with
CGstandby
one electronic lamp controlgear.

The measurement of standby power of electronic controlgear shall be performed according to
IEC 63103.
5.5 Networked standby power measurement
The measurement of networked standby power of electronic controlgear shall be performed
according to IEC 63103.
5.6 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.
– 18 – IEC 62442-3:2022 RLV © IEC 2022
Bibliography
IEC 60357, Tungsten halogen lamps (non-vehicle) – Performance specifications
IEC 62384, DC or AC supplied electronic controlgear for LED modules – Performance
requirements
IEC 62442-1:2018, 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 62442-2, Energy performance of lamp controlgear – Part 2: Controlgear for high intensity
discharge lamps (excluding low-pressure mercury fluorescent lamps) – Method of measurement
to determine the efficiency of controlgear
ISO/IEC Guide 98-3:2008, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)

___________
IEC 62442-3 ®
Edition 3.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Energy performance of lamp controlgear –
Part 3: Controlgear for tungsten-halogen lamps and LED light sources – Method
of measurement to determine the efficiency of controlgear

Performance énergétique des appareillages de lampes –
Partie 3: Appareillages des lampes tungstène-halogène et des sources
lumineuses à LED – Méthode de mesurage pour la détermination du rendement
des appareillages
– 2 – IEC 62442-3:2022 © IEC 2022
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General . 8
4.1 General notes on tests . 8
4.2 Controllable controlgear . 8
4.3 Measurement uncertainty . 8
4.4 Sampling of controlgear for testing . 8
4.5 Size of the test sample. 8
4.6 Power supply . 8
4.7 S
...