CISPR 15:2013

CISPR 15 ®
Edition 8.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Limits and methods of measurement of radio disturbance characteristics of
electrical lighting and similar equipment

Limites et méthodes de mesure des perturbations radioélectriques produites par
les appareils électriques d'éclairage et les appareils analogues

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CISPR 15 ®
Edition 8.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Limits and methods of measurement of radio disturbance characteristics of

electrical lighting and similar equipment

Limites et méthodes de mesure des perturbations radioélectriques produites

par les appareils électriques d'éclairage et les appareils analogues

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 33.100.10 ISBN 978-2-83220-798-7

CISPR/F/Publication CISPR 15 (2013), eighth edition/I-SH 01

LIMITS AND METHODS OF MEASUREMENT

OF RADIO DISTURBANCE CHARACTERISTICS

OF ELECTRICAL LIGHTING AND SIMILAR EQUIPMENT

INTERPRETATION SHEET 1
This interpretation sheet has been prepared by subcommittee CISPR F: Interference relating
to household appliances, tools, lighting equipment and similar apparatus, of IEC technical
committee CISPR: International special committee on radio interference.
The text of this interpretation sheet is based on the following documents:
ISH Report on voting
CISPR/F/583/ISH CISPR/F/591/RVD

Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
CISPR 15 interpretation sheet on the assessment of retrofit
Extra Low Voltage LED lamps
Introduction
During the CISPR meeting in Seoul 2011 the IARU reported that a number of LED lighting
products are causing interference with amateur radio reception. See item 15 of the minutes
CISPR/1218/RM.
In addition to this verbal report, the IARU submitted in January 2012 a detailed written report
which was circulated as CISPR/F/565/INF. Major sources of interference are some types of
Extra Low Voltage (e.g. 12 V) LED lamps for which the current CISPR 15 requirements are
not clear. Additional clarification of the standard was requested urgently.
In response the CISPR F management committee issued document CISPR/F/568/INF setting
out an action plan to resolve the issue at short notice.
Part of the solution is this Interpretation Sheet which details the assessment of retrofit ELV

LED lamps.
June 2013 ICS 33.100.10
Question: How are the requirements of CISPR 15 applied to retrofit Extra Low

Voltage (ELV) LED lamps?
Interpretation: When assessing retrofit ELV LED lamps against the requirements of

CISPR 15 the following procedure shall be applied.

ELV LED lamps without active switching electronic components are considered to fulfil the

requirements of CISPR 15 without test.

All other types of retrofit ELV LED lamps shall be tested in conjunction with a wire wound 50
or 60 Hz ring-core transformer. The use of such a transformer is considered to be the worst-

case condition and shall be used unless it is clearly stated in the manufacturer’s instructions

that the lamp is unsuitable for use with such a transformer. In this case measurements shall

be performed in combination with a typical compliant electronic transformer for halogen
lamps.
The combination of transformer and ELV LED lamp shall comply with the mains disturbance
voltage limits of Table 2a and the radiated disturbance limits of Tables 3a and 3b.
During the disturbance voltage measurement, the ELV LED lamp is mounted in a conical
metal housing as described in Figure 7. The ELV LED lamp is then connected to the
transformer by a flexible 3-core cable consisting of two ELV supply conductors and the earth
connection to the conical housing. The length of this cable shall be as short as possible. The
metal conical housing shall be positioned with its cable entrance close to the transformer.
The combination of transformer and conical metal housing shall be tested as a luminaire in
accordance with the requirements of 8.2.
When performing the radiated disturbance measurements in accordance with Clause 9, the
conical metal housing shall not be used.
References are to CISPR 15:2013.

_____________
June 2013 ICS 33.100.10
CISPR/F/Publication CISPR 15 (2013), eighth edition/I-SH 02

LIMITS AND METHODS OF MEASUREMENT

OF RADIO DISTURBANCE CHARACTERISTICS

OF ELECTRICAL LIGHTING AND SIMILAR EQUIPMENT

INTERPRETATION SHEET 2
This interpretation sheet has been prepared by subcommittee CISPR F: Interference relating
to household appliances, tools, lighting equipment and similar apparatus, of IEC technical
committee CISPR: International special committee on radio interference.
The text of this interpretation sheet is based on the following documents:
ISH Report on voting
CISPR/F/584/ISH CISPR/F/592/RVD

Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
CISPR 15 interpretation sheet on: Test conditions for wall dimmers
Introduction
More and more incandescent lamps are replaced by energy saving lamps (fluorescent and
LED). Some types are dimmable by phase control of the supply voltage. New wall dimmers
are developed to improve the dim performance when the dimmer is loaded with energy saving
lamps. CISPR 15 is not clear on how to test these types of wall dimmers.
This interpretation sheet has been prepared by the Joint 17B-23B-34A-77A IEC Forum on the
dimming of electronic self-ballasted lamps and was finalized during the CISPR/F/WG2
meeting in Bangkok.
Question: How to test a wall dimmer which is suitable for energy saving lamps?
Relevant text CISPR 15:
Clause 8 of CISPR 15 specifies the ‘Method of measurement of disturbance voltages’.

8.3.1 ‘Directly operating devices’ specifies the test arrangement of independent directly
operating light regulating devices such as wall dimmers.
The second paragraph reads:
‘Unless otherwise specified by the manufacturer, the regulating device shall be measured with
the maximum allowed load consisting of incandescent lamps as specified by the
manufacturer.’
June 2013 ICS 33.100.10
Answer:
1) Independent directly operating light regulating devices (e.g. wall dimmers) which are

suitable for incandescent lamps and other types of lighting equipment (e.g. self-

ballasted lamps) shall be tested with incandescent lamps.

2) Independent directly operating light regulating devices which are only suitable for

lighting equipment other than incandescent lamps shall be tested with the appropriate

lighting equipment as provided by the manufacturer.

th
The above will be included in the full revision of CISPR 15, following the 8 edition.

_____________
June 2013 ICS 33.100.10
– 2 – CISPR 15 © IEC:2013
CONTENTS
FOREWORD . 6

1 Scope . 8

2 Normative references. 9

3 Terms and definitions . 9

4 Limits . 10

4.1 Frequency ranges . 10

4.2 Insertion loss . 10

4.3 Disturbance voltages . 10
4.3.1 Mains terminals . 10
4.3.2 Load terminals . 11
4.3.3 Control terminals . 11
4.4 Radiated electromagnetic disturbances . 11
4.4.1 Frequency range 9 kHz to 30 MHz. 11
4.4.2 Frequency range 30 MHz to 300 MHz . 12
5 Application of the limits . 12
5.1 General . 12
5.2 Indoor luminaires . 13
5.2.1 General . 13
5.2.2 Incandescent lamp luminaires . 13
5.2.3 Fluorescent lamp luminaires . 13
5.2.4 Other luminaires . 13
5.3 Independent auxiliaries exclusively for use with lighting equipment . 13
5.3.1 General . 13
5.3.2 Independent light regulating devices . 14
5.3.3 Independent transformers and convertors for incandescent lamps or
LED light sources . 14
5.3.4 Independent ballasts for fluorescent and other discharge lamps . 15
5.3.5 Semi-luminaires . 15
5.3.6 Independent starters and igniters . 15
5.4 Self-ballasted lamps . 15
5.5 Outdoor lighting appliances . 15
5.5.1 General . 15
5.5.2 Mounting system . 16

5.5.3 Integrated switching devices . 16
5.5.4 Incandescent lamp luminaires . 16
5.5.5 Fluorescent lamp luminaires . 16
5.5.6 Other luminaires . 16
5.6 UV and IR radiation appliances . 16
5.6.1 General . 16
5.6.2 IR radiation appliances . 16
5.6.3 UV fluorescent lamp appliances . 17
5.6.4 Other UV and/or IR appliances . 17
5.7 Transport lighting . 17
5.7.1 General . 17
5.7.2 External lighting and signalling . 17
5.7.3 Lighting of on-board instruments . 17
5.7.4 Lighting of interior cabins and rooms . 17

CISPR 15 © IEC:2013 – 3 –
5.8 Requirements for luminaires for cold cathode tubular discharge lamps (e.g.

neon tubes) used, for example, for advertising purposes . 17

5.9 Self-contained emergency lighting luminaires . 18

5.9.1 General . 18

5.9.2 Measurement in the mains on mode, i.e. operating condition prior to

the disruption of the mains supply . 18

5.9.3 Measurement in emergency mode, i.e. operating condition after

disruption of the mains supply . 18

5.10 Replaceable starters for fluorescent lamps . 18

5.11 LED light sources and associated luminaires . 19

6 Operating conditions for lighting equipment . 19
6.1 General . 19
6.2 Lighting equipment . 19
6.3 Supply voltage and frequency . 19
6.4 Ambient conditions . 19
6.5 Lamps . 19
6.5.1 Type of lamp used . 19
6.5.2 Ageing time of lamps . 19
6.5.3 Stabilization time of lamps . 19
6.6 Replaceable starters . 20
7 Method of insertion loss measurement . 20
7.1 Circuits for the measurement of insertion loss . 20
7.2 Measuring arrangement and procedure . 20
7.2.1 Radiofrequency generator . 20
7.2.2 Balance-to-unbalance transformer . 21
7.2.3 Measuring receiver and network . 21
7.2.4 Dummy lamps . 21
7.2.5 Measuring arrangements . 21
7.3 Luminaire . 21
7.4 Measurement procedure . 22
7.4.1 General . 22
7.4.2 Voltage U . 22
7.4.3 Voltage U . 22
7.4.4 Calculation of insertion loss . 22
7.4.5 Orientation of dummy lamps. 22
8 Method of measurement of disturbance voltages . 22

8.1 Measuring arrangement and procedure . 22
8.1.1 Mains terminal voltage measurement . 22
8.1.2 Load terminal voltage measurement . 22
8.1.3 Control terminal voltage measurement . 23
8.1.4 Light regulation . 23
8.1.5 Measurements with an average detector . 23
8.2 Indoor and outdoor luminaires . 23
8.3 Independent light regulating devices . 24
8.3.1 Directly operating devices . 24
8.3.2 Devices having a remote control function . 25
8.4 Independent transformers and convertors for incandescent lamps or LED light
sources . 25
8.5 Independent ballasts for fluorescent and other discharge lamps . 25
8.6 Self-ballasted lamps and semi-luminaires . 25

– 4 – CISPR 15 © IEC:2013
8.7 UV and IR radiation appliances . 26

8.8 Self-contained emergency lighting luminaires . 26

8.9 Independent starters and igniters for fluorescent and other discharge lamps . 26

9 Method of measurement of radiated electromagnetic disturbances . 27

9.1 Measuring arrangement and procedure related to Subclause 4.4.1 . 27

9.1.1 Measuring equipment . 27

9.1.2 Measurements in three directions . 27

9.1.3 Wiring instructions . 27

9.1.4 Light regulation . 27

9.2 Measuring arrangement and procedure related to Subclause 4.4.2 . 27
9.3 Indoor and outdoor luminaires . 27
9.4 Independent convertors for incandescent lamps or LED light sources . 27
9.5 Independent ballasts for fluorescent and other discharge lamps . 27
9.6 Self-ballasted lamps and semi-luminaires . 27
9.7 UV and IR radiation appliances . 27
9.8 Self-contained emergency lighting luminaires . 28
10 Interpretation of CISPR radio disturbance limits . 28
10.1 Significance of a CISPR limit . 28
10.2 Tests . 28
10.3 Statistical method of evaluation. 28
10.4 Non-compliance . 29
11 Measurement uncertainty . 29
Annex A (normative) Electrical and constructional requirements for the low-capacitance
balance-to-unbalance transformer . 42
Annex B (normative) Independent method of measurement of radiated disturbances . 47
Annex C (normative) Example test arrangements during CISPR 32 radiated disturbance

measurement . 50
Annex D (informative) Applicability of methods and limits for different types of
equipment . 52
Bibliography . 58

Figure 1 – Insertion loss measurement on linear and U-type fluorescent lamp
luminaires . 30
Figure 2 – Insertion loss measurement on circular fluorescent lamp luminaires . 31
Figure 3 – Insertion loss measurement on luminaires for single-capped fluorescent

lamps with integrated starter . 32
Figure 4a – Configuration of linear and U-type dummy lamps . 33
Figure 4b – Configuration of circular dummy lamps . 34
Figure 4c – Dummy lamp for 15 mm fluorescent lamps . 35
Figure 4d – Dummy lamp for 15 mm single-capped fluorescent lamps . 36
Figure 4e – Dummy lamp for single-capped fluorescent lamps, linear-shaped, twin tube,
tube diameter 12 mm . 37
Figure 4f – Dummy lamp for single-capped fluorescent lamps, linear-shaped, quad tube,
diameter 12 mm . 38
Figure 5 – Measuring arrangements for an independent light regulating device,
transformer or convertor . 39
Figure 6 – Measuring arrangements for measuring a luminaire (Figure 6a), an
independent ballast (Figure 6b) and a self-ballasted lamp (Figure 6c) . 40

CISPR 15 © IEC:2013 – 5 –
Figure 7 – Conical metal housing for self-ballasted lamps . 41

Figure A.1 – Isolation test configuration . 43

Figure A.2a – Balance-to-unbalance transformer circuit . 44

Figure A.2b – Details of transformer core construction . 45

Figure A.2c – Details of transformer core construction . 45

Figure A.2d – Construction of transformer . 46

Figure B.1 – Test set-up for CDN method . 48

Figure B.2 – Calibration set-up for determining CDN voltage division factor . 49

Table 1 – Minimum values of insertion loss . 10
Table 2a – Disturbance voltage limits at mains terminals . 10
Table 2b – Disturbance voltage limits at load terminals . 11
Table 2c – Disturbance voltage limits at control terminals . 11
Table 3a – Radiated disturbance limits in the frequency range 9 kHz to 30 MHz . 12
Table 3b – Radiated disturbance limits in the frequency range 30 MHz to 300 MHz at a
measuring distance of 10 m . 12
Table 4 – Sample size and corresponding k factor in a non-central t-distribution . 28
Table B.1 – Common mode terminal voltage limits, CDN method . 48
Table C.1 – Arrangement of typical luminaires during the CISPR 32 radiated
disturbance measurement . 50
Table D.1 – Application of measurement methods and limits to lamps (references to
Tables or Subclauses) . 52
Table D.2 – Application of measurement methods and limits to luminaires (references to
Tables or Subclauses) . 53
Table D.3 – Application of measurement methods and limits to independent auxiliaries
exclusively for use with lighting equipment (references to Tables or Subclauses) . 56

– 6 – CISPR 15 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
LIMITS AND METHODS OF MEASUREMENT OF

RADIO DISTURBANCE CHARACTERISTICS

OF ELECTRICAL LIGHTING AND SIMILAR EQUIPMENT

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

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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 CISPR 15 has been prepared by subcommittee CIS/F: Interference
relating to household appliances tools, lighting equipment and similar apparatus, of IEC

technical committee CISPR: International special committee on radio interference.
This eighth edition cancels and replaces the seventh edition published in 2005, its
Amendment 1 (2006) and Amendment 2 (2008). It is a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• inclusion of LED light sources and luminaires, clarification of test supply voltage and
frequency, and improvements to clause 5 relating to the application of limits to the various
types of lighting equipment covered under the scope of CISPR 15;
• notes relating to Japan in Tables 2a and 3a have been removed;
• introduction of requirements for flashing type emergency lighting luminaires utilizing xenon
lamps;
• introduction of requirements for neon and other advertising signs;

CISPR 15 © IEC:2013 – 7 –
• clarification of the requirement for radiated disturbances between 30 MHz and 300 MHz in

case the operating frequency of the light source is below 100 Hz.

The text of this standard is based on the following documents:

FDIS Report on voting
CIS/F/598/FDIS CIS/F/602/RVD
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 8 – CISPR 15 © IEC:2013
LIMITS AND METHODS OF MEASUREMENT OF

RADIO DISTURBANCE CHARACTERISTICS

OF ELECTRICAL LIGHTING AND SIMILAR EQUIPMENT

1 Scope
This standard applies to the emission (radiated and conducted) of radiofrequency disturbances

from:
– all lighting equipment with a primary function of generating and/or distributing light intended
for illumination purposes, and intended either for connection to the low voltage electricity
supply or for battery operation;
– the lighting part of multi-function equipment where one of the primary functions of this is
illumination;
– independent auxiliaries exclusively for use with lighting equipment;
– UV and IR radiation equipment;
– neon advertising signs;
– street/flood lighting intended for outdoor use;
– transport lighting (installed in buses and trains).
Excluded from the scope of this standard are:
– lighting equipment operating in the ISM frequency bands (as defined in Resolution 63
(1979) of the ITU Radio Regulation);
– lighting equipment for aircraft and airports;
– apparatus for which the electromagnetic compatibility requirements in the radio-frequency
range are explicitly formulated in other CISPR standards.
NOTE Examples are:
– built-in lighting devices in other equipment, for example scale illumination or neon devices;
– photocopiers;
– slide projectors;
– lighting equipment for road vehicles.
The frequency range covered is 9 kHz to 400 GHz.

Multi-function equipment which is subjected simultaneously to different clauses of this standard
and/or other standards shall meet the provisions of each clause/standard with the relevant
functions in operation.
The limits in this standard have been determined on a probabilistic basis to keep the
suppression of disturbances within economically reasonable limits while still achieving an
adequate level of radio protection and electromagnetic compatibility. In exceptional cases,
additional provisions may be required.

CISPR 15 © IEC:2013 – 9 –
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.
IEC 60050-161, International Electrotechnical Vocabulary (IEV) – Chapter 161:

Electromagnetic compatibility
IEC 60155, Glow-starters for fluorescent lamps
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
CISPR 11, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
Amendment 1:2010
CISPR 16-1-1:2010, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Amendment 1:2010
CISPR 16-1-2:2003, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Conducted disturbances
Amendment 1:2004
Amendment 2:2006
CISPR 16-1-4:2010, 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
Amendment 1:2012
CISPR 16-4-2:2011, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 4-2: Uncertainties, statistics and limit modelling – Uncertainty in EMC
measurements
CISPR 32:2012, Electromagnetic compatibility of multimedia equipment – Emission
requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-161, as well
as the following apply.
3.1
LED light source
device containing an LED or collection of LEDs used for the purpose of illumination

– 10 – CISPR 15 © IEC:2013
4 Limits
4.1 Frequency ranges
In 4.2, 4.3 and 4.4, limits are given as a function of frequency range. No measurements need

to be performed at frequencies where no limits are specified.

NOTE In 1979, the World Administrative Radio Conference (WARC-79) reduced the lower frequency limit in region
1 to 148,5 kHz; for applications falling within the scope of this standard, tests at 150 kHz are considered adequate,

since 148,5 kHz falls within the receiver bandwidth.

4.2 Insertion loss
The minimum values of the insertion loss for the frequency range 150 kHz to 1 605 kHz are
given in Table 1.
Table 1 – Minimum values of insertion loss
Frequency range Minimum values
kHz dB
150 to 160 28
a
160 to 1 400 28 to 20
1 400 to 1 605 20
a
Decreasing linearly with the logarithm of frequency.

4.3 Disturbance voltages
4.3.1 Mains terminals
The limits of the mains terminal disturbance voltages for the frequency range 9 kHz to 30 MHz
are given in Table 2a.
Table 2a – Disturbance voltage limits at mains terminals
Limits
a
Frequency range
dB(µV)
Quasi-peak Average
9 kHz to  50 kHz 110 –
b
50 kHz to 150 kHz 90 to 80 –
b b
150 kHz to 0,5 MHz 66 to 56 56 to 46

c c
0,5 MHz to 5,0 MHz 56 46
5 MHz to 30 MHz 60 50
a
At the transition frequency, the lower limit applies.
b
The limit decreases linearly with the logarithm of the frequency in the ranges 50 kHz to 150 kHz and 150 kHz to
0,5 MHz.
c
For electrodeless lamps and luminaires, the limit in the frequency range of 2,51 MHz to 3,0 MHz is 73 dB(µV)
quasi-peak and 63 dB(µV) average.

CISPR 15 © IEC:2013 – 11 –
4.3.2 Load terminals
The limits of the load terminal disturbance voltage for the frequency range 150 kHz to 30 MHz

are given in Table 2b.
Table 2b – Disturbance voltage limits at load terminals

Limits
a
Frequency range
dB(µV)
MHz Quasi-peak Average
0,15 to 0,50 80 70
0,50 to 30 74 64
a
At the transition frequency, the lower limit applies.

4.3.3 Control terminals
The limits of the control terminal disturbance voltage for the frequency range 150 kHz to
30 MHz are given in Table 2c.
Table 2c – Disturbance voltage limits at control terminals
Limits
Frequency range
dB(µV)
MHz
Quasi-peak Average
0,15 to 0,50 84 to 74 74 to 64
0,50 to 30 74 64
NOTE 1 The limits decrease linearly with the logarithm of the frequency in the range 0,15 MHz to 0,5 MHz.
NOTE 2 The voltage disturbance limits are derived for use with an Asymmetric Artificial Network (AAN) which
presents a common mode (asymmetric mode) impedance of 150 Ω to the control terminal.

4.4 Radiated electromagnetic disturbances
4.4.1 Frequency range 9 kHz to 30 MHz
The quasi-peak limits of the magnetic component of the radiated disturbance field strength in
the frequency range 9 kHz to 30 MHz, measured as a current in 2 m, 3 m or 4 m loop antennas

around the lighting equipment, are given in Table 3a.
The limits for the 2 m loop diameter apply to equipment not exceeding a length of 1,6 m,
those for the 3 m loop diameter for equipment having a length in between 1,6 m and 2,6 m and
those for the 4 m loop diameter for equipment havi
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