IEC 62920:2026

IEC 62920 ®
Edition 2.0 2026-10
INTERNATIONAL
STANDARD
Photovoltaic power generating systems - EMC requirements and test methods
for power conversion equipment

ICS 27.160 ISBN 978-2-8327-1544-4

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CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 11
4 Classification of PCE . 17
4.1 Category of locations . 17
4.2 Division into classes . 17
4.3 Information for users . 18
5 Test setup . 18
5.1 General . 18
5.2 Configuration of test setups . 18
5.2.1 General. 18
5.2.2 Setups for immunity requirement test . 19
5.2.3 Setups for low frequency emission requirement tests . 20
5.2.4 Setups for high frequency emission requirement tests . 20
6 Operating conditions during testing. 21
6.1 General . 21
6.2 Operating conditions for immunity requirement test . 22
6.3 Operating conditions for low frequency emission requirement test . 22
6.4 Operating conditions for high frequency emission requirement test . 22
7 Immunity requirements . 23
7.1 Requirements . 23
7.2 Performance criteria. 28
8 Emission requirements . 29
8.1 Low frequency . 29
8.1.1 General. 29
8.1.2 Harmonics . 29
8.1.3 Voltage change . 30
8.2 High frequency . 30
8.2.1 General. 30
8.2.2 Conducted emission . 30
8.2.3 Radiated emission . 34
9 Test procedures, results and report . 37
Annex A (informative) Configuration examples of test setups . 38
A.1 General . 38
A.2 Setups for immunity requirement test . 38
A.2.1 Electrostatic discharge . 38
A.2.2 Radiated immunity . 40
A.2.3 Electrical fast transient/burst . 41
A.2.4 Surge . 43
A.2.5 Conducted disturbances, induced by radio-frequency fields . 45
A.2.6 Voltage dips and interruption . 45

A.3 Setups for high frequency emission requirement test . 46
A.3.1 Conducted disturbances . 46
A.3.2 Radiated disturbances . 49
Annex B (informative) Setups for low frequency emission requirement test . 51
B.1 General . 51
B.2 Example of a test circuit for low frequency emission requirement test . 51
B.2.1 Harmonics . 51
B.2.2 Voltage fluctuations and flicker . 53
Annex C (informative) Test setup for conducted disturbance measurement . 55
C.1 General . 55
C.2 Examples of a test setup . 55
Annex D (informative) Alternative test setups for high-power PCE . 58
D.1 General . 58
D.2 Alternative setup for immunity requirement test. 58
D.2.1 Alternative setups for EFT or burst immunity test . 58
D.2.2 Alternative setup for surge test . 59
D.2.3 Alternative test setup for conducted disturbances, induced by radio-
frequency fields . 59
D.2.4 Conducted disturbances measurement . 60
Annex E (normative) Conditional measurement methods and limits of conducted
common mode (asymmetric mode) disturbance at ports other than power ports . 62
E.1 Consideration of requirements specified in CISPR 32 and covered in this
document . 62
E.2 Configuration of EUT specified in CISPR 32 . 62
E.3 Measurement conditions specified in CISPR 32 . 63
E.4 Proposals on measurements for wired network ports cover in this document . 64
E.5 Consideration of the interface model covered in this document . 64
E.6 Applicable conducted emission limits at wired network ports in this document . 65
Bibliography . 66

Figure 1 – Example of ports . 12
Figure A.1 – Example of a test setup for direct application of discharges to PCE. 39
Figure A.2 – Example of a test setup for indirect application of discharges to PCE . 39
Figure A.3 – Example of a test setup for wall-mounted PCE . 41
Figure A.4 – Example of a test setup for direct coupling of the test voltage to AC mains
power ports . 42
Figure A.5 – Example of a test setup for application of the test voltage with a
capacitive coupling clamp . 43
Figure A.6 – Example of a test setup for AC mains power ports . 44
Figure A.7 – Example of a test setup for DC power ports . 44
Figure A.8 – Example of a setup of conducted disturbances immunity test applied for
wall-mounted PCE . 45
Figure A.9 – Example of a test setup using a generator for voltage dips and short
interruptions. 46
Figure A.10 – Example of a test setup of conducted disturbances measurement applied
for wall-mounted PCE . 47
Figure A.11 – Example of a test setup of conducted disturbances measurement applied
for wall-mounted PCE with power circulation . 48
Figure A.12 – Example of a test setup of conducted disturbances measurement applied
for wall-mounted PCE with direct connection to AC mains . 49
Figure A.13 – Example of a test setup of radiated disturbances measurement applied
for wall-mounted PCE . 50
Figure B.1 – Measurement circuit for single-phase two-wire PCE . 51
Figure B.2 – Measurement circuit for single-phase three-wire PCE . 52
Figure B.3 – Measurement circuit for three-phase three-wire PCE . 52
Figure B.4 – Measurement circuit for three-phase four-wire PCE . 52
Figure B.5 – Measurement circuit for single-phase two-wire PCE . 53
Figure B.6 – Measurement circuit for single-phase three-wire PCE . 53
Figure B.7 – Measurement circuit for three-phase three-wire PCE . 54
Figure B.8 – Measurement circuit for three-phase four-wire PCE . 54
Figure C.1 – Example of a standardized test setup for conducted disturbances
measurement with AC mains power supply. 56
Figure C.2 – Example of a standardized test setup for conducted disturbances
measurement with a laboratory AC power source . 57
Figure D.1 – Example of an alternative setup for EFT or burst immunity test . 58
Figure D.2 – Example of an alternative coupling/decoupling network for AC mains
power ports . 59
Figure D.3 – Example of a test setup applying clamp injection method to AC mains
power ports . 60
Figure D.4 – Alternative test setup of conduced disturbances measurement using
artificial networks as voltage probes . 61
Figure E.1 – Typical circuit diagram of PCE which is equipped with wired network ports
configured with a module. 63

Table 1 – Immunity requirements for class B PCE . 24
Table 2 – Immunity requirements for class B PCE (for ports besides power ports) . 25
Table 3 – Immunity requirements for class A PCE . 26
Table 4 – Immunity requirements for class A PCE (for ports besides power ports) . 27
Table 5 – Voltage dips and interruption immunity requirements for class B PCE. 27
Table 6 – Voltage dips and interruption immunity requirements for class A PCE. 28
Table 7 – Performance criteria for immunity tests . 29
Table 8 – Disturbance voltage limits at the AC mains and auxiliary AC power port for
class A PCE measured on a test site . 31
Table 9 – Disturbance voltage limits at the AC mains and auxiliary AC power port for
class B PCE measured on a test site . 31
Table 10 – Disturbance limits at the DC power port for class A PCE measured on
a test site . 32
Table 11 – Disturbance limits at the DC power port for class B PCE measured on
a test site . 32
Table 12 – Applicability of measurements at DC power ports . 33
Table 13 – Limits of conducted common mode (asymmetric mode) disturbance at ports
other than power ports for class A PCE. 34
Table 14 – Limits of conducted common mode (asymmetric mode) disturbance at ports
other than power ports for class B PCE. 34
Table 15 – Electromagnetic radiation disturbance limits up to 1 GHz for class A PCE
measured on a test site . 35
Table 16 – Electromagnetic radiation disturbance limits up to 1 GHz for class B PCE
measured on a test site . 35
Table 17 – Electromagnetic radiation disturbance limits > 1 GHz for class A PCE
measured on a test site . 36
Table 18 – Electromagnetic radiation disturbance limits > 1 GHz for class B PCE
measured on a test site . 36
Table 19 – Required highest frequency for radiated measurement . 37

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Photovoltaic power generating systems -
EMC requirements and test methods for power conversion equipment

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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shall not be held responsible for identifying any or all such patent rights.
IEC 62920 has been prepared by IEC technical committee 82: Solar photovoltaic energy
systems. It is an International Standard.
This second edition cancels and replaces the first edition published in 2017 and
Amendment 1:2021. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) PCE with radio functionality is added in the scope;
b) operating conditions for tests are revised to cover wired and wireless communications;
c) immunity requirements for antenna ports are added;
d) the surge test is added in the immunity requirements for wired and wireless network ports
of class B PCE;
e) performance criteria are revised to cover wired and wireless communications;
f) current limits are added in the table of disturbance limits at the DC power port for class A
PCE to cover requirements of the measurement of common mode current when artificial
networks are used as voltage probes;
g) limits of conducted common mode disturbance at the antenna port are added;
h) conditional measurement methods and limits of conducted common mode (asymmetric
mode) disturbance at ports other than power ports are added;
i) electromagnetic radiation disturbance limits above 1 GHz are added;
j) an annex for the rational conditional measurement methods and limits of conducted common
mode (asymmetric mode) disturbance at ports other than power ports is added.
The text of this International Standard is based on the following documents:
Draft Report on voting
82/2652/FDIS 82/2702/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/publications.
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, or
– revised.
INTRODUCTION
Background
Power conversion equipment (PCE) is indispensable for solar photovoltaic power energy
systems in order to convert the DC electric power energy generated by solar photovoltaic
modules into AC or DC electric power, and to feed the AC power energy into the AC mains
network or loads. PCE consists of DC to DC, DC to AC or AC to DC converters and forms
systems with or without DC-coupled electrical energy storage devices.
Manufacturers of PCE ensure the performance and reliability of PCE. Electromagnetic
compatibility (EMC) is one aspect of performance which must be ensured wherever PCE is used
in or exposed to an electromagnetic environment.
IEC Guide 107 specifies that TC 77 and CISPR, which are called EMC committees, have
responsibility for the development of basic, product family and generic standards on EMC
requirements, and product committees must use the emission limits developed by EMC
committees and must refer to basic immunity standards for the specification of test techniques.
However, when the EMC standards which are developed by TC 77 and CISPR are not
considered suitable for a particular product or electromagnetic environment, product
committees must seek their assistance and advice for any change in either the emission limits
or measurement requirements, or both. Product committees are responsible for selecting the
appropriate immunity test items and levels for their products as well as for defining the relevant
performance criteria for the evaluation of the immunity test results. Consequently, product
committees, such as TC 22, TC 26, TC 9, and TC 69, have their own EMC standard to define
EMC requirements and test methods for their particular types of products.
TC 82 also has the responsibility to consider EMC requirements for PCE applying to the solar
photovoltaic power energy systems, and TC 82 has taken action as follows to develop its own
product EMC standards:
a) selection of the immunity test items in accordance with EMC environments for the solar
photovoltaic power energy systems;
b) supplement of generic standards with a detailed description of test conditions and test set
up;
c) development of the conditional limits and alternative test methods in terms of installation
environmental and operational conditions;
d) development of appropriate requirements and test method for high power equipment.
In 2017, TC 82 published IEC 62920 (ed.1.0) and covered the minimum EMC requirements for
PCE applying to solar photovoltaic power energy systems in consideration with the above-
mentioned items.
Following the state-of-the-art technology as well as the latest market needs, IEC 62920:2017
is amended to extend its scope by taking into account the following technical items:
– DC to DC power conversion equipment used in photovoltaic power energy systems;
– electrical energy storage devices connected to DC power ports of PCE used in photovoltaic
power energy systems;
– 5 m antenna distance of radiated disturbance measurements for the medium size PCE.
Maintenance of IEC 62920:2017 and IEC 62920:2017/AMD1:2017
For the purpose of keeping the consistency with EMC basic standards and considering market
needs, TC 82 started the maintenance of IEC 62920:2017 and IEC 62920:2017/AMD1:2017 for
the development of ed.2.0 in November 2021.
This document covers the following items:
– PCE with radio functionality is added in the scope;
– normative references are updated;
– some terms and definitions are updated or deleted;
– terms and definitions relevant to radio functionality are added;
– the classification of PCE is revised to introduce the location classes;
– the configurations of test setups are revised to cover the operation of the wired and wireless
functions;
– setups for high frequency emission requirement test are updated to keep the consistency
with EMC basic standards, such as CISPR 16-1-2 and CISPR 16-2-3;
– operating conditions for tests are revised to cover wired and wireless communications;
– immunity requirements for antenna ports are added;
– the surge test is added in the immunity requirements for wired and wireless network ports
of class B PCE;
– immunity requirements regarding IEC 61000-4-3 are revised to fill the gap of frequency
range;
– performance criteria are revised to cover wired and wireless communications;
– current limits are added in the table of disturbance limits at the DC power port for class A
PCE to cover requirements of the measurement of common mode current when artificial
networks are used as voltage probes;
– limits of conducted common mode disturbance at the antenna port are added;
– conditional measurement methods and limits of conducted common mode (asymmetric
mode) disturbance at ports other than power ports are added;
– electromagnetic radiation disturbance limits above 1 GHz are added;
– an annex for the rational conditional measurement methods and limits of conducted common
mode (asymmetric mode) disturbance at ports other than power ports is added.

1 Scope
This document specifies electromagnetic compatibility (EMC) requirements for power
conversion equipment (PCE) (e.g. DC to DC, DC to AC and AC to DC) for use in photovoltaic
(PV) power systems with or without electrical energy storage devices.
PCE covered by this document can be grid-interactive, which is termed as a grid connected
power converter (GCPC), or stand-alone. It can be supplied by single or multiple photovoltaic
modules grouped in various array configurations. The PCE can be intended for use in
conjunction with batteries or other forms of energy storage and therefore a uni- or bidirectional.
This document covers not only PCE connected to a public low voltage AC mains network or
other low voltage AC mains installation, but also PCE connected to a medium or high voltage
AC network with or without step-down power transformers. Requirements for the PCE
connected to a medium or high voltage AC network are specified in this document. However,
some requirements relevant to grid interconnection are addressed with other standards
specifying power quality or their own grid codes in some countries.
This document provides test methods and test conditions for PCE at a test site, but not for
photovoltaic modules and other balance of system components.
PCE which incorporates either radio transmit or receive, or both functions, as wireless
communication functions, is included in the scope of this document as PCE with radio
functionality. However, the emission requirements in this document are not intended to be
applicable to the intentional transmissions from a radio transmitter as defined by the ITU
including their spurious emissions.
When compliance with EMC requirements at the test site cannot be shown due to technical
reasons of the test site, PCE can be assessed in situ. However, only high frequency emission
requirements for in situ assessment are specified in CISPR 11.
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 60050-195:2021, International Electrotechnical Vocabulary (IEV) - Part 195: Earthing and
protection against electric shock
IEC 60050-485:2020, International Electrotechnical Vocabulary (IEV) - Part 485: Fuel cell
technologies
IEC 60050-601:1985, International Electrotechnical Vocabulary (IEV) - Part 601: Generation,
transmission and distribution of electricity - General
IEC TS 61836:2025, Solar photovoltaic energy systems - Terms, definitions and symbols
IEC 61000-3-2:2018, Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)
IEC 61000-3-2:2018/AMD1:2020
IEC 61000-3-2:2018/AMD2:2024
IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for
equipment with rated current ≤ 16 A per phase and not subject to conditional connection
IEC 61000-3-3:2013/AMD1:2017
IEC 61000-3-3:2013/AMD2:2021
IEC 61000-3-11:2017, Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems -
Equipment with rated current ≤ 75 A and subject to conditional connection
IEC 61000-3-12:2011, Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for
harmonic currents produced by equipment connected to public low-voltage systems with input
current > 16 A and ≤ 75 A per phase
IEC 61000-3-12:2011/AMD1:2021
IEC 61000-4-2, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test
IEC 61000-4-3, Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-5:2014/AMD1:2017
IEC 61000-4-6:2023, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
techniques - Immunity to conducted disturbances, induced by radio-frequency fields
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 61000-4-11:2020, Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity
tests for equipment with input current up to 16 A per phase
IEC 61000-4-15, Electromagnetic compatibility (EMC) - Part 4-15: Testing and measurement
techniques - Flickermeter - Functional and design specifications
IEC 61000-4-34:2005, Electromagnetic compatibility (EMC) - Part 4-34: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity
tests for equipment with input current more than 16 A per phase
IEC 61000-4-34:2005/AMD1:2009
IEC 61000-4-34:2005/AMD2:2025
IEC 61000-6-3:2026, Electromagnetic compatibility (EMC) - Part 6-3: Generic standards -
Emission standard for equipment in residential locations
IEC 61000-6-4:2018, Electromagnetic compatibility (EMC) - Part 6-4: Generic standards -
Emission standard for industrial environments
IEC 61000-6-8:2020, Electromagnetic compatibility (EMC) - Part 6-8: Generic standards -
Emission standard for professional equipment in commercial and light-industrial locations
IEC 62109-1:2010, Safety of power converters for use in photovoltaic power systems - Part 1:
General requirements
CISPR 11:2024, Industrial, scientific and medical equipment - Radio-frequency disturbance
characteristics - Limits and methods of measurement
CISPR 16-1-1:2019, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring
apparatus
CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-2: Radio disturbance and immunity measuring apparatus - Coupling devices
for conducted disturbance measurements
CISPR 16-1-2:2014/AMD1:2017
CISPR 16-1-4:2025, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test
sites for radiated disturbance measurements
CISPR 16-1-6:2014, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-6: Radio disturbance and immunity measuring apparatus - EMC antenna
calibration
CISPR 16-1-6 2014/AMD1:2017
CISPR 16-1-6 2014/AMD2:2022
CISPR 16-2-1:2014, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted
disturbance measurements
CISPR 16-2-1:2014/AMD1:2017
CISPR 16-2-3:2016, Specification for radio disturbance and immunity measuring apparatus and
methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated
disturbance measurements
CISPR 16-2-3:2016/AMD1:2019
CISPR 16-2-3:2016/AMD2:2023
CISPR 32:2015, Electromagnetic compatibility of multimedia equipment - Emission
requirements
CISPR 32:2015/AMD1:2019
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-195, IEC
60050-485, IEC 60050-601, IEC 60050-713, IEC 61000-6-3, IEC 61000-6-4, IEC TS 61836, IEC
62109-1 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1
photovoltaic power generating system
PV system
electric power generating system which uses the photovoltaic effect to convert solar power into
electricity
3.2
power conversion equipment
PCE
electrical device converting one form of electrical power to another form of electrical power with
respect to voltage, current, frequency, phase and the number of phases
[SOURCE: IEC 62109-1:2010, 3.66, modified – "one kind of electrical power from a voltage or
current source into another kind of electrical power" has been replaced with "one form of
electrical power to another form of electrical power", "with respect to voltage, current and
frequency" has been replaced by "with respect to voltage, current, frequency, phase and the
number of phases". The note has been deleted.]
3.3
photovoltaic module
PV module
basic DC power unit consisting of interconnected photovoltaic cells protected from the
environment
[SOURCE: IEC TS 61836:2025, 3.1.44, modified – The notes to entry have been deleted.]
3.4
electrical energy storage device
device that is able to absorb electrical energy, to store it for a certain amount of time and to
release electrical energy during which energy conversion processes can be included
3.5
port
physical interface of the PCE with the external electromagnetic environment
Note 1 to entry: See Figure 1 for examples of ports.

Figure 1 – Example of ports
3.6
enclosure port
physical boundary of the PCE product which electromagnetic fields can radiate through or
impinge on
3.7
AC mains power port
port used to connect to a public low voltage AC mains power distribution network or other low
voltage AC mains installation
3.8
auxiliary AC power port
additional low voltage AC power port for purposes other than feeding in AC power
3.9
DC power port
port used to connect a local low voltage DC power generating system or electrical energy
storage devices
3.10
auxiliary DC power port
additional low voltage DC power port for purposes other than supplying DC power for the DC
to AC conversion or electrical energy storage devices
3.11
signal and control port
port intended for the interconnection of components of PCE, or between PCE and local auxiliary
equipment, and used in accordance with relevant functional specifications
Note 1 to entry: Examples include RS-232, Universal Serial Bus (USB), High-Definition Multimedia Interface (HDMI),
IEEE standard 1394 ("Fire Wire") and control pilot.
[SOURCE: CISPR 32:2015 and CISPR 32:2015/AMD1:2019, 3.1.30, modified – The slash has
been replaced with "and" in the term; "an EUT" has been replaced with "PCE"; "EUT and local
AE" has been replaced by "PCE and local auxiliary equipment"; "(for example for the maximum
length of cable connected to it)" has been deleted; "waveguide ports used for interconnecting
MME" has been replaced with “control pilot” in the note to entry.]
3.12
wired network port
point to connection for voice, data and signalling transfers intended to interconnect widely
dispersed systems by direct connection to a single-user or multi-user communication network
Note 1 to entry: Examples include CATV, PSTN, ISDN, xDSL, LAN and similar networks. These ports can support
screened or unscreened cables and can also carry AC or DC power where this is an integral part of the
telecommunication specification.
3.13
antenna port
port for connection of an antenna used for intentional transmission and/or reception of radiated
RF energy
[SOURCE: CISPR 32:2015, 3.1.3, modified – "other than a broadcast receiver tuner port" has
been deleted.]
3.14
HPE
high power electronic equipment and system
one or more power conversion equipment with a combined rated power greater than 75 kVA, or
a system containing such equipment
3.15
low voltage
LV
voltage not exceeding a conventionally adopted limit
Note 1 to entry: For AC, the conventionally adopted limit is 1 000 V.
Note 2 to entry: For DC, the conventionally adopted limit is 1 500 V.
[SOURCE: IEC 60050-195:2021, 195-05-25]
3.16
high voltage
HV
voltage exceeding the conventionally adopted limit for low voltage
[SOURCE: IEC 60050-195:2021, 195-05-26]
3.17
medium voltage
MV
any set of voltage levels lying between low and high voltage
[SOURCE: IEC 60050-601:1985, 601-01-28, modified – The note has been deleted.]
3.18
small equipment under test
small EUT
equipment under test, either positioned on a table top or standing on the floor, which, including
its cables, fits in a cylindrical volume of 1,5 m in diameter and 1,5 m height (as measured from
the floor)
Note 1 to entry: At an OATS or in a SAC, the radiated emission measurement distance of 3 m shall only be used
for small EUT.
[SOURCE: CISPR 16-2-3:2016/AMD1:2019, 3.1.35, modified – "including its cables," has been
moved to follow "which"; "(2,0 m)" after "1,5 m" in both diameter and height has been deleted;
"measured from the floor with a measurement distance of 3 m (5 m) at an OATS/SAC" has been
replaced with "(as measured from the floor)"; the note to entry has been added.]
3.19
medium equipment under test
medium EUT
equipment under test, either positioned on a table top or standing on the floor, which, including
its cables, fits in a cylindrical volume of 2,0 m in diameter and 2,0 m height (as measured from
the floor)
Note 1 to entry: At an OATS or in a SAC, the radiated emission measurement distance of 5 m shall only be used
for medium EUT.
3.20
residential location
area of land designated for domestic dwellings where the mains power within these locations is
directly connected to the low-voltage public mains network
Note 1 to entry: Examples of residential locations are: houses, apartments, farm buildings housing people.
Note 2 to entry: A dwelling can be a single building, separate building or a separate section of a larger building.
Note 3 to entry: Within th
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