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 62442-1:2018 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 second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision and has been harmonized with IEC 62442-2 and IEC 62442­-3.

Performance énergétique des appareillages de lampes - Partie 1: Appareillages des lampes à fluorescence - Méthode de mesure pour la détermination de la puissance d'entrée totale des circuits d'appareillage et du rendement des appareillages

IEC 62442-1:2018 définit une méthode de mesure et de calcul de la puissance d'entrée totale pour les circuits d’appareillage-lampe fonctionnant avec la ou les lampes à fluorescence qui leur sont associées. La méthode de calcul du rendement des appareillages de lampe est également définie. Le présent document s'applique aux circuits électriques d’appareillage de lampe constitués exclusivement de l'appareillage et de(s) lampe(s). Il s'applique à des alimentations en courant continu jusqu’à 1 000 V et/ou à des alimentations en courant alternatif de 1 000 V au maximum, à 50 Hz ou 60 Hz. Cette deuxième édition annule et remplace la première édition parue en 2011. Cette édition constitue une révision technique et a été harmonisée avec l’IEC 62442-2 et l’IEC 62442-3.

General Information

• Status: Published
• Publication Date: 02-May-2018
• ICS: 29.140.99 - Other standards related to lamps
• ICS: 33.160.25 - Television receivers
• Technical Committee: SC 34C - Auxiliaries for lamps
• Drafting Committee: WG 1 - TC 34/SC 34C/WG 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 09-Feb-2022
• Completion Date: 30-Oct-2020

Relations

• Revised: IEC 62442-1:2022 - 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
• Effective Date: 05-Sep-2023
• Revises: IEC 62442-1:2011 - 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 the controlgear
• Effective Date: 05-Sep-2023

Overview

IEC 62442-1:2018 - Energy performance of lamp controlgear, Part 1 - defines standardized measurement and calculation methods to determine the total input power of controlgear‑lamp circuits and to calculate the efficiency of lamp controlgear for fluorescent lamps. This second edition (2018) replaces the 2011 edition and is harmonized with IEC 62442-2 and IEC 62442-3. The standard applies to controlgear‑lamp circuits (controlgear + lamp(s) only) supplied by DC or AC up to 1 000 V at 50 Hz or 60 Hz and covers linear, compact (single‑ended) and other general‑purpose fluorescent lamps.

Key topics and technical requirements

• Scope and applicability: Measurement method applies only where the controlgear and lamp(s) are separate components (excludes controlgear integral to the lamp, controllable wire‑wound magnetic controlgear, and luminaires with additional optical requirements).
• Total input power measurement: Defines how to measure the combined input power of the controlgear‑lamp circuit under specified test conditions.
• Controlgear efficiency calculation: Provides a calculation method to derive controlgear efficiency from measured inputs and lamp operating conditions.
• Types of controlgear covered: Both magnetic (wire‑wound electromagnetic) and electronic controlgear measurement procedures are specified.
• Ancillary measurements: Procedures for measuring standby power, ballast lumen factor correction, light output measurement setup (Annex A), and guidance on lamp conditioning and sampling.
• Test conditions: Requirements for sampling, conditioning of lamps, test voltages/frequencies (50 Hz/60 Hz), and sensor/network connections to ensure repeatable results.
• Normative references: Cross‑referenced IEC standards for lamp and ballast performance (e.g., IEC 60081, IEC 60929, IEC 61347 series).

Practical applications and users

Who uses IEC 62442-1 and why:

• Controlgear and ballast manufacturers - to validate energy performance, optimize designs, and support efficiency claims.
• Test laboratories and certification bodies - to perform reproducible measurements for compliance, product certification, and reporting.
• Lighting designers, specifiers and procurement teams - to compare controlgear efficiency and estimate system energy use in projects.
• Regulators and energy program managers - to define conformity criteria, energy labeling, and efficiency incentive schemes.
• R&D teams - for benchmarking electronic vs. magnetic controlgear and for evaluating standby losses and lumen factor impacts.

Practical benefits include reliable comparison of products, better energy budgeting for installations using fluorescent lighting, and harmonized test evidence for regulatory and market access purposes.

Related standards

• IEC 62442-2 and IEC 62442-3 (harmonized parts of the series)
• IEC 60081, IEC 60901, IEC 60921, IEC 60929, IEC 61347 (normative references cited by IEC 62442-1)

Keywords: IEC 62442-1, lamp controlgear, energy performance, fluorescent lamps, total input power, controlgear efficiency, ballast, measurement method, standby power, electrical testing.

Standards Content (Sample)

IEC 62442-1 ®
Edition 2.0 2018-05
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

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IEC 62442-1 ®
Edition 2.0 2018-05
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 978-2-8322-5682-4

– 2 – IEC 62442-1:2018 RLV © IEC 2018

CONTENTS
FOREWORD . 4

1 Scope . 6

2 Normative references . 6

3 Terms and definitions . 7

4 General . 9

4.1 Applicability . 9

4.2 Declaration of Ballast lumen factor . 10
4.3 Dimmable controlgear . 10
4.4 Multi-wattage power and/or multi-number-lamp controlgear. 10
Accuracy of measurement .
4.5 General notes on tests . 10
4.6 Sampling of controlgear for testing . 10
4.7 Number Size of the test samples . 11
4.8 Conditioning of lamps . 11
4.9 Test voltages and frequencies . 11
4.10 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 . 12
5.3 Measurement and calculation of the total input power of
magneticcontrolgear-lamp circuits . 12
5.4 Calculation of of the efficiency of magnetic wire wound 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
Annex A (normative) Energy performance measurement setup . 15
A.1 Measurement setup for magnetic wire wound electromagnetic controlgear . 15
A.2 Measurement setup for electronic controlgear . 15
A.2.1 Measurement of the total input power . 15
A.2.2 Measuring method of standby power . 16

A.2.3 Light output measurement . 16
A.2.4 Distance to lamp related to lamp length: explanations . 18
Annex B (informative) Application of the reference ballast when assessing lamps in
electronic operation . 20
B.1 Calculation of the reference ballast impedance . 20
B.2 Method of adjusting the lamp power . 20
Bibliography . 21

Figure A.1 – Measurement of magnetic wire wound electromagnetic controlgear-lamp
circuits . 15
Figure A.2 – Measurement of AC supplied electronic controlgear-lamp circuits . 16
Figure A.3 – Test setup for measuring standby power . 16
Figure A.4 – Side view of light output measurement system . 17

Figure A.5 – Top view of light output measurement system . 17

Figure A.6 – Configuration of lamp and photocell sensor . 19

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

– 4 – IEC 62442-1:2018 RLV © IEC 2018

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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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
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This redline version of the official IEC Standard allows the user to identify the changes
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International Standard IEC 62442-1 has been prepared by subcommittee 34C: Auxiliaries for

lamps, of IEC technical committee 34: Lamps and related equipment.

This second edition cancels and replaces the first edition published in 2011. This edition

constitutes a technical revision and has been harmonized with IEC 62442-2 and IEC 624423.

The text of this International Standard is based on the following documents:

CDV Report on voting
34C/1335A/CDV 34C/1376/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 "http://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 publication using a colour printer.

– 6 – IEC 62442-1:2018 RLV © IEC 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

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 fluorescent lamps;
– single-ended (compact) fluorescent lamps;
– other general purpose 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 60081:1997, Double-capped fluorescent lamps – Performance specifications
IEC 60081:1997/AMD4:2010
IEC 60901:1996, Single-capped fluorescent lamps – Performance requirements 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
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.2
limiting value
greatest or smallest admissible value of one of the quantities
3.3
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.
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”.
3.4
controlgear
one or more components between the supply and one or more lamps which may 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
3.5
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 lamp(s) to the required value and operates the lamp(s)
at the same frequency as the supply frequency
Frequency of the lamp operation is the same as supply frequency.

– 8 – IEC 62442-1:2018 RLV © IEC 2018

3.6
electronic controlgear
a.c. and/or d.c. supplied to 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

3.7
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

3.8
controlgear-lamp circuit
electrical circuit, or part thereof, normally built in a luminaire, consisting of the controlgear
and lamp(s)
3.9
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: It 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.
3.10
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.
3.11
rated supply voltage of a controlgear
voltage specified by the controlgear manufacturer for a given controlgear that applies to a
given operation condition
3.11
lamp rated power of a lamp
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.
3.12
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.

3.13
total input power
total power supplied to consumed by the controlgear-lamp (light source) circuit measured at

rated input voltage
The rated power specified is related to a specific ballast lumen factor (BLF).

[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.]

3.14
controlgear efficiency
η
controlgear
ratio between the summation of the rated lamp power(s) and the corrected to reference
conditions input power of the controlgear – lamp circuit with possible sensors, network
connections and other auxiliary loads disconnected
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 to entry: Loads from sensors, network connections and other auxiliary are disconnected or, if not possible,
otherwise eliminated from the result.
3.15
multi-power-lamp-power controlgear
controlgear designed for the operation of one lamp which could have different lamp power to
operate one or more lamp(s) with different rated powers
3.16
multi-number-lamp controlgear
controlgear designed for the operation of to operate simultaneously more than one similar
lamp
3.17
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, failed lamp(s) not included
Note 1 to entry: The ignition phase of lamp(s) is excluded from the standby mode.
Note 2 to entry: Failed lamp(s) could lead to incorrect measurements.
3.18
standby power
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.
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.

– 10 – IEC 62442-1:2018 RLV © IEC 2018

4.2 Declaration of Ballast lumen factor

For every controlgear-lamp combination submitted for the test, the controlgear manufacturer

shall declare the measured ballast lumen factor shall be measured. The ballast lumen factor

is defined in 3.12.
Light
test
BLF = (1)
Light
ref
where
Light is the light output of the reference lamp connected to the reference ballast
ref
measured 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 declared 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.
4.3 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 datasheet in IEC 60081 and IEC 60901.
Dimmable controlgear shall be measured at 100 % and 25 % lumen output of the operated
lamp(s).
4.4 Multi-wattage power and/or multi-number-lamp controlgear
If a controlgear is designed for the operation of one lamp with different lamp power then the
test shall be carried out for each lamp type, the manufacturer shall declare for every lamp the
relevant BLF. The test for multi-lamp controlgear shall be carried out with all possible
combinations.
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.
4.5 Accuracy of measurement
The accuracy of the measurements shall be in accordance with A.1.2 and A.1.7 of IEC 60929.
The total accuracy of the measurement arrangement shall be within ± 1,5 % for magnetic
wire-wound controlgear – lamp circuits and ± 2,5 %, for electronic controlgear – lamp circuits,
including the accuracy of the photometric measurement.
4.5 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.
4.6 Sampling of controlgear for testing
Tests in this standard are type tests. 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.

4.7 Number Size of the test samples

One specimen shall be tested. Tests are carried out with one test specimen.

4.8 Conditioning of lamps
Lamps shall be handled and stabilized as described in IEC 60081:1997 and
IEC 60081:1997/AMD4:2010, B.1.1 and in IEC 60901:1996 and IEC 60901:1996/AMD5:2011,
B.1.1.
4.9 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 ± 2 %
(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
Japan 100 V, 200 V, 50/60 Hz
China 220 V, 50 Hz
Australia and New Zealand 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, respectively.
c
If the manufacturer advises that for a marked voltage range a discrete value shall be used for measurement,
this should be observed.
4.10 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).
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.

– 12 – IEC 62442-1:2018 RLV © IEC 2018

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 magnetic wire wound 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
tot meas
reached (controlgear temperature and lamp current stabilized).
The measurements with the controlgear under test in the controlgear-lamp circuit are to be
made with the rated supply voltage. P of a reference lamp, in some cases, may deviate
Lrated
from the nominal value of the lamp.
5.3 Measurement and calculation of the total input power of magnetic wire wound
controlgear-lamp circuits
The measured total input power (P ) of a controlgear-lamp circuit is measured with one
tot meas
controlgear 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 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

tot meas.
W);
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 magnetic wire wound electromagnetic controlgear

The ballast lumen factor of 0,95 for the light output of lamps operated with magnetic wire

wound electromagnetic controlgear requires the calculation of the efficiency of the magnetic

controlgear using Equation (3):

P
Lrated
(3)
η = 0,95
controlgear
P
tot ref
5.5 Measurement and calculation of the total input power of electronic

controlgear-lamp circuits
The measured total input power (P ) of a controlgear-lamp circuit is measured with one
tot meas
controlgear 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 more than 1 % of the rated lamp current. The
measurement setup 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.4 and Figure A.5 for measuring the light output of the lamp.
The measurements are carried out using the test circuit specified in Figure A.1.
NOTE Measurement in the Ulbricht sphere is accepted as an alternative to the ones specified
in Figure A.3 and Figure A.4. The diameter of the sphere should be at least A + 200 mm. For
parameter A, see Figure A.4 A.5. In case of doubt, the measurement using the photocell
(Figure A.3 and Figure A.4 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
lref meas
the lamp (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.
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
tot ref
Equation (4):
– 14 – IEC 62442-1:2018 RLV © IEC 2018

P Light
Lrated ref
(4)
PP= ××
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

tot meas
W);
P is the rated lamp or typical HF power of the relevant reference lamp according to
Lrated
the 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
ref
measured 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.

==
Annex A
(normative)
Energy performance measurement setup

A.1 Measurement setup for magnetic wire wound electromagnetic controlgear

For the measurement of the total input power of electromagnetic controlgear and the

measurement of the lamp power, the measurement setup of Figure A.1 should be used.

Ballast
under test
Starter
Supply
V
Reference
ballast
V
Supply
V
A
W
IEC
Figure A.1 – Measurement of magnetic wire wound
electromagnetic controlgear-lamp circuits
A.2 Measurement setup 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 setup of Figure A.2 should be used.

Reference lamp
– 16 – IEC 62442-1:2018 RLV © IEC 2018

Ballast
Supply V
under test Photocell
W
µ
A
W
V
Supply V Reference
ballast
IEC
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.
DU
V
Supply V
W
W
Control input
IEC
Figure A.3 – Test setup for measuring standby power
A.2.3 Light output measurement
Figure A.4 and Figure A.5 show an example for the light output measurement of fluorescent
lamps.
NOTE The sensor view angle should shall be large enough to measure the total illuminance of
the lamp(s) including the cathodes.
NOTE The distance of the sensor to the lamp(s) should 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
Reference lamp
la m ps
370 Lamps
100-200
Sensor
o
v
l er
a
m f
p u 5 00
ll 500
Over full l
e
n
g
t
h
lamp length
Anti-draught shield
IEC
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.4 – Side view of light output measurement system
Lamp holder
Sensor
C
IEC
Dimensions in millimetres
Key
A = lamp length
B = 1/2 lamp length
C = 2x lamp length
Figure A.5 – Top view of light output measurement system
Requirements for positioning in Figure A.4 and Figure A.5 are as follows:
a) Figure A.4 and Figure A.5 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.
B
A
A + 200
– 18 – IEC 62442-1:2018 RLV © IEC 2018

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, care shall be taken that the reference measurements and test

measurements are shall always be taken in the same position.

A.2.4 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 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.6.
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.6 shows the relation between X, X´, R, R´, Φx and Φx´.
NOTE Light output measurements can be done without assistance of an accredited laboratory.

R
Φx
X, X'
α
R'
Φx'
IEC
Figure A.6 – Configuration of lamp and photocell sensor

0,5 L
– 20 – IEC 62442-1:2018 RLV © IEC 2018

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 3.3 should be regarded 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 3.3.
After stabilization, the HF supply voltage is a
...

IEC 62442-1 ®
Edition 2.0 2018-05
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 mesure 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 2.0 2018-05
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 mesure 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 978-2-8322-5641-1

– 2 – IEC 62442-1:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General . 9
4.1 Applicability . 9
4.2 Ballast lumen factor . 9
4.3 Dimmable controlgear . 10
4.4 Multi-power and/or multi-number-lamp controlgear . 10
4.5 General notes on tests . 10
4.6 Sampling of controlgear for testing . 10
4.7 Size of the test sample. 10
4.8 Conditioning of lamps . 10
4.9 Test voltages and frequencies . 10
4.10 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 . 13
5.7 Measuring the standby power . 13
Annex A (normative) Energy performance measurement setup . 14
A.1 Measurement setup for electromagnetic controlgear . 14
A.2 Measurement setup for electronic controlgear . 14
A.2.1 Measurement of the total input power . 14
A.2.2 Measuring method of standby power . 15
A.2.3 Light output measurement . 15
A.2.4 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 . 14
Figure A.2 – Measurement of AC supplied electronic controlgear-lamp circuits . 15
Figure A.3 – Test setup for measuring standby power . 15
Figure A.4 – Side view of light output measurement system . 16
Figure A.5 – Top view of light output measurement system . 16
Figure A.6 – Configuration of lamp and photocell sensor . 18

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

– 4 – IEC 62442-1:2018 © IEC 2018
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, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62442-1 has been prepared by subcommittee 34C: Auxiliaries for
lamps, of IEC technical committee 34: Lamps and related equipment.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision and has been harmonized with IEC 62442-2 and IEC 62442-3.
The text of this International Standard is based on the following documents:
CDV Report on voting
34C/1335A/CDV 34C/1376/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 "http://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 62442-1:2018 © IEC 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

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 fluorescent lamps;
– single-ended (compact) fluorescent lamps;
– other general purpose 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 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
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.2
limiting value
greatest or smallest admissible value of one of the quantities
3.3
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.
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”.
3.4
controlgear
one or more components between the supply and one or more lamps which may 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
3.5
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 lamp(s) to the required value and operates the lamp(s)
at the same frequency as the supply frequency
3.6
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
– 8 – IEC 62442-1:2018 © IEC 2018
3.7
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
3.8
controlgear-lamp circuit
electrical circuit, or part thereof, normally built in a luminaire, consisting of the controlgear
and lamp(s)
3.9
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: It 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.
3.10
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.
3.11
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.
3.12
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.
3.13
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.]
3.14
controlgear efficiency
η
controlgear
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 to entry: Loads from sensors, network connections and other auxiliary are disconnected or, if not possible,
otherwise eliminated from the result.
3.15
multi-power-lamp controlgear
controlgear designed to operate one or more lamp(s) with different rated powers
3.16
multi-number-lamp controlgear
controlgear designed to operate simultaneously more than one similar lamp
3.17
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, failed lamp(s) not included
Note 1 to entry: The ignition phase of lamp(s) is excluded from the standby mode.
Note 2 to entry: Failed lamp(s) could lead to incorrect measurements.
3.18
standby power
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.
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.
4.2 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 3.12.
Light
test
BLF= (1)
Light
ref
where
Light is the light output of the reference lamp connected to the reference ballast
ref
measured 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.

– 10 – IEC 62442-1:2018 © IEC 2018
4.3 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 datasheet in IEC 60081 and IEC 60901.
Dimmable controlgear shall be measured at 100 % and 25 % lumen output of the operated
lamp(s).
4.4 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.
4.5 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.
4.6 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.
4.7 Size of the test sample
Tests are carried out with one test specimen.
4.8 Conditioning of lamps
Lamps shall be handled and stabilized as described in IEC 60081:1997 and
IEC 60081:1997/AMD4:2010, B.1.1 and in IEC 60901:1996 and IEC 60901:1996/AMD5:2011,
B.1.1.
4.9 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
Japan 100 V, 200 V, 50/60 Hz
China 220 V, 50 Hz
Australia and New Zealand 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.
4.10 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).
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
tot meas
reached (controlgear temperature and lamp current stabilized).
The measurements with the controlgear under test in the controlgear-lamp circuit are to be
made with the rated supply voltage. P of a reference lamp, in some cases, may deviate
Lrated
from the nominal value of the lamp.

– 12 – IEC 62442-1:2018 © IEC 2018
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
tot meas
controlgear 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 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
tot meas.
W);
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
tot meas
controlgear 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 more than 1 % of the rated lamp current. The
measurement setup 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.4 and Figure A.5 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 and Figure A.4. The diameter of the sphere should be at least A + 200 mm. For
parameter A, see Figure A.5 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
lref meas
the lamp (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.
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
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
tot meas
W);
P is the rated lamp or typical HF power of the relevant reference lamp according to
Lrated
the 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
ref
measured 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
 (5)
η ×

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.
==
– 14 – IEC 62442-1:2018 © IEC 2018
Annex A
(normative)
Energy performance measurement setup
A.1 Measurement setup for electromagnetic controlgear
For the measurement of the total input power of electromagnetic controlgear and the
measurement of the lamp power, the measurement setup of Figure A.1 should be used.
Ballast
under test
Starter
Supply
V
Reference
ballast
V
Supply
V
A
W
IEC
Figure A.1 – Measurement of electromagnetic controlgear-lamp circuits
A.2 Measurement setup 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 setup of Figure A.2 should be used.
Reference lamp
Ballast
Supply V
under test Photocell
W
µ
A
W
V
Supply V Reference
ballast
IEC
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.
DU
V
Supply V
W
W
Control input
IEC
Figure A.3 – Test setup for measuring standby power
A.2.3 Light output measurement
Figure A.4 and Figure A.5 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
Reference lamp
– 16 – IEC 62442-1:2018 © IEC 2018
la m ps
370 Lamps
100-200
Sensor
o
v
l er
a
m f
p u 5 00
ll 500
Over full l
e
n
g
t
h
lamp length
Anti-draught shield
IEC
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.4 – Side view of light output measurement system
Lamp holder
Sensor
C
IEC
Dimensions in millimetres
Key
A = lamp length
B = 1/2 lamp length
C = 2x lamp length
Figure A.5 – Top view of light output measurement system
Requirements for positioning in Figure A.4 and Figure A.5 are as follows:
a) Figure A.4 and Figure A.5 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.
B
A
A + 200
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.2.4 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 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.6.
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.6 shows the relation between X, X´, R, R´, Φx and Φx´.
NOTE Light output measurements can be done without assistance of an accredited laboratory.

– 18 – IEC 62442-1:2018 © IEC 2018
R
Φx
X, X'
α
R'
Φx'
IEC
Figure A.6 – Configuration of lamp and photocell sensor

0,5 L
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 3.3 should be regarded 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 3.3.
After stabilization, the HF supply voltage is a
...