Amendment 1 - Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current ≤16 A per phase)

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IEC 61000-3-2:2018/AMD1:2020 - Amendment 1 - Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current ≤16 A per phase)
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IEC 61000-3-2
Edition 5.0 2020-07
Electromagnetic compatibility (EMC) –
Part 3-2: Limits – Limits for harmonic current emissions (equipment input
current ≤16 A per phase)
IEC 61000-3-2:2018-01/AMD1:2020-07(en)
---------------------- Page: 1 ----------------------
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IEC 61000-3-2
Edition 5.0 2020-07
Electromagnetic compatibility (EMC) –
Part 3-2: Limits – Limits for harmonic current emissions (equipment input
current ≤16 A per phase)
ICS 33.100.10 ISBN 978-2-8322-8585-5

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

® Registered trademark of the International Electrotechnical Commission
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– 2 – IEC 61000-3-2:2018/AMD1:2020
© IEC 2020

This amendment has been prepared by subcommittee 77A: EMC – Low frequency phenomena,

of IEC technical committee 77: Electromagnetic compatibility.
The text of this amendment is based on the following documents:
FDIS Report on voting
77A/1077/FDIS 77A/1084/RVD

Full information on the voting for the approval of this amendment can be found in the report on

voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

Replace, under “Part 2: Environment”, the first line “Description levels” with the following:

Description of the environment
1 Scope
Replace the fourth paragraph with the following:

Arc welding equipment, which is not professional equipment, with a rated input current up to

and including 16 A per phase, is included in the scope of this document. All other arc welding

equipment is excluded from the scope of this document; however, the harmonics emission can

be evaluated using IEC 61000-3-12 and relevant installation restrictions.
2 Normative references
Replace the references with the following:
IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) – Part 161:
Electromagnetic compatibility (available at
IEC 60107-1:1997, Methods of measurement on receivers for television broadcast

transmissions – Part 1: General considerations – Measurements at radio and video frequencies

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IEC 61000-3-2:2018/AMD1:2020 – 3 –
© IEC 2020
IEC 60155:1993, Glow-starters for fluorescent lamps
IEC 60268-1:1985, Sound system equipment – Part 1: General
IEC 60268-1:1985/AMD1:1988
IEC 60268-1:1985/AMD2:1988
IEC 60268-3:2018, Sound system equipment – Part 3: Amplifiers

IEC 60335-2-2:2019, Household and similar electrical appliances – Safety – Part 2-2: Particular

requirements for vacuum cleaners and water-suction cleaning appliances

IEC 60335-2-14:2016, Household and similar electrical appliances – Safety – Part 2-14:

Particular requirements for kitchen machines

IEC 60335-2-24:2010, Household and similar electrical appliances – Safety – Part 2-24:

Particular requirements for refrigerating appl iances, ice-cream appliances and ice makers

IEC 60335-2-24:2010/AMD1:2012
IEC 60335-2-24:2010/AMD2:2017

IEC 60335-2-79:2016, Household and similar electrical appliances – Safety – Part 2-79:

Particular requirements for high pressure cleaners and steam cleaners

IEC 60598-2-17:2012, Luminaires – Part 2-17: Particular requirements – Luminaires for stage

lighting, television and film studios (outdoor and indoor)
IEC 60598-2-17:2012/AMD1:2015
IEC 60974-1:2017, Arc welding equipment – Part 1: Welding power sources
IEC 61000-4-7:2002, Electromagnetic compatibility (EMC) – Part 4-7: Testing and

measurement techniques – General guide on harmonics and interharmonics measurements and

instrumentation, for power supply systems and equipment connected thereto
IEC 61000-4-7:2002/AMD1:2008

IEC 62756-1:2015, Digital load side transmission lighting control (DLT) – Part 1: Basic

3 Terms and definitions
Replace definition 3.2 including Note 1 to entry with the following:
light source provided with at least one cap

Note 1 to entry: For products that have the same physical characteristics as lamps for general lighting but that are

built to emit optical radiation mainly in the IR or UV spectrum, the term IR lamp or UV lamp is often used.

[SOURCE: IEC 60050-845:2020, 845-27-008, modified – existing notes 2 and 3 have been

removed, the term “electric” has been removed from the term and the definition]
Replace definition 3.3 with the following:
integrated lamp

electric lamp which cannot be dismantled without being permanently damaged, incorporating

lighting control gear, and all additional elements necessary for starting and stable operation of

the light source, designed for direct connection to the supply voltage
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– 4 – IEC 61000-3-2:2018/AMD1:2020
© IEC 2020
[SOURCE: IEC 60050-845:2020, 845-27-009]
Replace definition 3.4 with the following:

apparatus which distributes, filters or transforms the light transmitted from at least one source

of optical radiation and which includes, except the sources themselves, all the parts necessary

for fixing and protecting the sources (IEV 845-21-032) and, where necessary, circuit auxiliaries

together with the means for connecting them to the power supply

[SOURCE: IEC 60050-845: 845-30-001:2020, modified – existing note has been removed]

Replace definition 3.6 with the following:
Replace definition 3.7 with the following and delete Note 1 to entry:
active input power

mean value of the instantaneous power, taken over 10 (50 Hz systems) or 12 (60 Hz systems)

fundamental periods and measured in accordance with IEC 61000-4-7:2002 and IEC 61000-4-

7:2002/AMD1:2008 at the input supply terminals of the equipment under test
partial odd harmonic current
Add the following new note to entry:
Note 1 to entry: Details for the calculation of the POHC are given in Annex C.
Renumber the existing Note 1 to entry as Note 2 to entry.
Replace definition 3.13 including note 1 to entry with the following:
lighting equipment

equipment with a primary function of generating and/or regulating and/or distributing the

radiation emitted by a light source
Note 1 to entry: See also 5.2.
Replace definition 3.19 including all notes to entry with the following:
lighting control gear

unit inserted between the power supply and at least one light source, which serves to supply

the light source(s) with the voltage and/or current required for its (their) intended operation, and

which can consist of one or more separate components.

Note 1 to entry: The lighting control gear can include means for igniting, dimming, correcting the power factor and

suppressing radio interference, and further control functions.

Note 2 to entry: The lighting control gear can be partly or totally integrated in the light source.

Note 3 to entry: For the purposes of this document, independent phase control dimmers as defined in 3.23 and 3.24

are not considered to be lighting control gear.
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IEC 61000-3-2:2018/AMD1:2020 – 5 –
© IEC 2020
Replace definition 3.20 with the following.
digital load side transmission lighting control device
DLT control device

device to control lighting parameters of electronic lighting equipment, such as light level and

light colour, using data transmission over its load side mains wiring in accordance with

IEC 62756-1:2015

Note 1 to entry: A DLT control device is wired like a phase control dimmer, but does not directly make the supply

power delivered to the connected dedicated lighting equipment vary. It transmits digital signals over the power cable

on the load side to the dedicated lighting equipment, which contains means for receiving and interpreting control

signals as well as built-in means for dimming, colour variation and other operating features.

Note 2 to entry: This note applies to the French language only.
Replace definition 3.21 with the following:
device for varying the luminous flux from light sources

[SOURCE: IEC 60050-845: 845-28-063:2020, modified – the existing note has been removed]

Replace definition 3.26 with the following:
professional luminaire for stage lighting and studios

luminaire (outdoor or indoor) for stage lighting or for television, film or photographic studios

within the scope of IEC 60598-2-17:2012 and IEC 60598-2-17:2012/AMD1:2015 and which is

professional equipment
Add the following new terms:
light source
surface or object emitting light

[SOURCE: IEC 60050-845:2020, 845-27-001, modified – the existing notes have been removed]

instructions for use

information that is provided by manufacturers or distributors for users of the product

external power supply

equipment which converts power supplied by the mains into power at a different voltage, which

has its own physical enclosure, and which is intended for use with separate equipment that

constitutes the load
Note 1 to entry: The output voltage of the EPS can be either AC or DC.

Note 2 to entry: The output of the EPS can be either detachable from, or permanently connected to, the separate

equipment being powered.
Note 3 to entry: See also 5.3.
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– 6 – IEC 61000-3-2:2018/AMD1:2020
© IEC 2020
5 Classification of equipment
5.1 General
Replace the first sentence under Class D with the following:

Equipment having a specified power less than or equal to 600 W according to 6.3.2, of the

following types:
5.2 Description of lighting equipment
Replace the existing text with the following:
In this document, lighting equipment as defined in 3.13 includes:
– light sources, lamps, integrated lamps and luminaires;

– the lighting part of multi-function equipment where one of the primary functions of this is

– independent lighting control gear;
– ultraviolet (UV) and infrared (IR) radiation equipment;
– illuminated advertising signs;
– independent dimmers, other than phase control types, for lighting equipment;
– DLT control devices.
In this document, lighting equipment as defined in 3.13 excludes:

– lighting devices built in equipment with another primary purpose, such as photocopiers,

overhead projectors and slide projectors, or employed for scale illumination or indication


– household appliances whose primary function is not for generating and/or regulating and/or

distributing optical radiation, but which contain one or more light sources with or without a

separate switch (e.g. a range hood with a built-in light source);
– independent phase control dimmers;
– professional luminaires for stage lighting and studios;
– emergency luminaires that emit light only during emergency mode;

– professional appliances whose primary function is to present lighting devices for exhibition


– mechanical switches and relays, and other simple devices providing on/off control only, that

do not produce distorted currents.
Add, after 5.2, the following new subclause:
5.3 External power supplies

EPS shall be classified according to the types of equipment they are designated for, as specified

in the instructions for use.
NOTE See also Clause B.17.
6.2 Control methods
Replace the existing text with the following:
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IEC 61000-3-2:2018/AMD1:2020 – 7 –
© IEC 2020

Asymmetrical controls according to IEC 60050-161:1990, 161-07-12, and half-wave rectification

directly on the mains supply may only be used where:

a) they are the only practical solution permitting the detection of unsafe conditions, or

b) they control an active input power less than or equal to 100 W, or

c) they are operated in a portable equipment fitted with a two-core flexible cord which is

intended for use for a short period of time, i.e. for a few minutes only.

If at least one of these three conditions is fulfilled, half-wave rectification may be used for any

purpose, whereas asymmetrical controls may only be used for the control of motors.

NOTE 1 Equipment which can fulfil condition c) includes, but is not limited to, hair dryers, electrical kitchen

appliances and portable tools.

NOTE 2 When using asymmetrical controls or half-wave rectification under the above circumstances, the input

current has a DC component that can disturb certain types of protection devices in case of an earth fault. See

IEC TR 60755.

Even though asymmetrical controls and half-wave rectification are permitted under the

conditions given above, equipment shall still comply with the harmonic requirements of this


In general, symmetrical controls may be used for any application and without particular

restrictions. However, symmetrical control methods which can produce integer harmonics of the

order in the mains input current may be used to control the
mains frequency up to the 40

power supplied to heating elements only if at least one of the following restrictions is met:

• the full sine-wave active input power of these heating elements is lower than or equal to

200 W, or

• the limits of Table 3 are not exceeded when testing with these heating elements active.

Such symmetrical control methods are also allowed for professional equipment provided that

either one of the above conditions is fulfilled, or the relevant emission limits according to

Clause 7 are not exceeded when tested at the supply input terminals and in addition both the

following conditions are fulfilled:

– it is necessary to control precisely the temperature of a heater whose thermal time constant

is less than 2 s, and
– there is no other technique economically available.

Professional equipment whose primary purpose, considered as a whole, is not for heating, shall

be tested against the relevant emission limits according to Clause 7.

NOTE 3 An example of a product whose primary purpose, considered as a whole, is not for heating is a photocopier,

whereas a cooker is considered to have heating as its primary purpose.

For domestic equipment used for a short time (e.g. hair dryers) the above restrictions for

symmetrical control of heating elements shall not apply and the limits for Class A shall apply


For the application of this document diode rectification is not considered to be a form of control.

6.3.2 Measurement procedure
In the second paragraph replace the first dash with the following:

– for each harmonic order, measure the 1,5 s smoothed RMS harmonic current in each

discrete Fourier transform (DFT) time window as defined in IEC 61000-4-7:2002 and

IEC 61000-4-7:2002 /AMD1:2008;
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– 8 – IEC 61000-3-2:2018/AMD1:2020
© IEC 2020
Replace the third paragraph with the following and delete the Note:

The value of the active input power to be used for the calculation of limits shall be determined

as follows:
– measure the 1,5 s smoothed active input power in each DFT time window;

– determine the maximum of the measured values of active input power from the DFT time

windows over the entire duration of the test.
Replace the last paragraph with the following:

For Class C equipment, the fundamental current specified by the manufacturer shall be used

for the calculation of limits. The fundamental component of the current is measured and

specified by the manufacturer in the same way as the power is measured and specified for the

calculation of Class D limits. Repeatability
Replace the text with the following:

The repeatability (see 3.15) of the average value for the individual harmonic currents over the

entire test observation period should be better than ±5 % of the applicable limit, when the

following conditions are met:

– the same equipment under test (EUT) (not another of the same type, but the exact same

– the same test system;
– the same location;
– identical test conditions;
– identical climatic conditions, if relevant.

This repeatability recommendation serves the purpose of defining the necessary observation

period (see 6.3.4), but not as a pass/fail criterion for the assessment of compliance with the

requirements of this document. Application of limits
Replace the first paragraph with the following:

The average values for the individual harmonic currents, taken over the entire test observation

period, shall be less than or equal to the applicable limits.
Replace all occurrences of the term “partial odd harmonic current” with “POHC”.
Add at the end of the following sentence:
Details for the calculation of the POHC are defined in Annex C. Test report
Delete, at the end of the existing text, the words “and power factor”.
Add, after 6.4, the following new subclause:
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IEC 61000-3-2:2018/AMD1:2020 – 9 –
© IEC 2020
6.5 Multifunction equipment

If not otherwise specified in this document, multifunction equipment which has more than one

independent function shall be tested according to the following provisions.
NOTE 1 Independent functions do not intentionally interact with each other.

Multifunction equipment may be tested with each function operated alone if this can be achieved

with reasonable effort. The equipment thus tested complies with the requirements of this

document when each function has satisfied the requirements for the relevant class of equipment

belonging to the function.

For equipment for which it is not obvious how to operate each function alone, the manufacturer

may provide instructions for testing purposes explaining how the function can be operated

alone. These instructions may specify internal changes in the equipment. The equipment shall

be tested accordingly.

If no instruction for testing purposes is provided or if it is not possible to test the equipment with

each function operated alone, the equipment complies with this document,

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