CISPR 14-1:2005/AMD1:2008

Amendment 1 - Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus - Part 1: Emission

Amendement 1 - Compatibilité électromagnétique - Exigences pour les appareils électrodomestiques, outillages électriques et appareils analogues - Partie 1: Emission

General Information

• Status: Published
• Publication Date: 12-Nov-2008
• ICS: 33.100.10 - Emission
• Technical Committee: CIS/F - Interference relating to household appliances tools, lighting equipment and similar apparatus
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 10-Aug-2016

Relations

• Revised: CISPR 14-1:2016 - Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus - Part 1: Emission
• Effective Date: 05-Sep-2023

Standards Content (Sample)

CISPR 14-1



Edition 5.0 2008-11



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
AMENDMENT 1
AMENDEMENT 1
Electromagnetic compatibility – Requirements for household appliances,
electric tools and similar apparatus –
Part 1: Emission

Compatibilité électromagnétique – Exigences pour les appareils
électrodomestiques, outillages électriques et appareils analogues –
Partie 1: Emission


CISPR 14-1:2005/A1:2008

---------------------- Page: 1 ----------------------
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CISPR 14-1



Edition 5.0 2008-11



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
AMENDMENT 1
AMENDEMENT 1
Electromagnetic compatibility – Requirements for household appliances,
electric tools and similar apparatus –
Part 1: Emission

Compatibilité électromagnétique – Exigences pour les appareils
électrodomestiques, outillages électriques et appareils analogues –
Partie 1: Emission


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 33.100.10 ISBN 978-2-88910-006-4
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – CISPR 14-1 Amend. 1 © IEC:2008




FOREWORD


This amendment has been prepared by CISPR subcommittee F: Interference relating to

household appliances tools, lighting equipment and similar apparatus.


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


FDIS Report on voting

CISPR/F/491/FDIS CISPR/F/502/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 maintenance result 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.

_____________

CONTENTS
Replace the existing title of subclause 8.4 by the following:
8.4 Non-compliance
Add the titles of Clauses 9 and 10 as follows:
9 Methods of measurement of radiated emission (30 MHz to 1 000 MHz)

10 Measurement uncertainty
Add the following new Tables 4, 5, and 6 :
Table 4 – General margin to the limit for statistical evaluation
Table 5 – Factor k for the application of the non-central t-distribution
Table 6 – Application of the binomial distribution

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CISPR 14-1 Amend. 1 © IEC:2008 – 3 –


Foreword


Delete the following sentence: “This publication has been drafted in accordance with the

ISO/IEC Directives, Part 2.”





1 Scope


1.1 Add, to the second paragraph, the following sentence:

Both mains powered appliances and battery powered appliances are included.
Insert, at the end of NOTE 1, the following new item:
– arc welding equipment: CISPR 11.

2 Normative references
Add the following new references:
IEC 61000-4-20:2003, Electromagnetic compatibility (EMC) – Part 4-20: Testing and
measurement techniques – Emission and immunity testing in transverse electromagnetic
(TEM) waveguides
CISPR 16-1-4:2007, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-4: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Radiated disturbances
Amendment 1 (2007)
CISPR 16-2-3:2006, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
CISPR 16-4-2:2003, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 4-2: Uncertainties, statistics and limit modelling – Uncertainty in EMC
measurements


3 Definitions
3.13
battery box
Replace the existing definition with the following:
compartment which is separate from the toy or appliance and in which the batteries are
placed
Add the following new definitions after definition 3.23
3.24
clock frequency
the fundamental frequency of any signal used in the device excluding those
which are solely used inside integrated circuits (IC).

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– 4 – CISPR 14-1 Amend. 1 © IEC:2008


NOTE High frequencies are often generated inside of integrated circuits (IC) by phase-locked-loop (PLL) circuits

from lower clock oscillator frequencies outside the IC.

3.25

battery-operated appliance

appliance which is operated only from batteries and has no provision for performing its

intended function when connected to the mains, either directly or via a power supply.


NOTE 1 Toys are not considered to be appliances.

NOTE 2 An appliance which has provision for charging but cannot perform its intended function during charging is
considered to be a battery-operated appliance.


3.26
mains-operated appliance
all appliances which are not battery-operated appliances
NOTE Toys are not considered to be appliances.

4 Limits of disturbance
Replace the text immediately preceding subclause 4.1 with the following new text:
Radio disturbance measurements below 148,5 kHz and above 1 000 MHz do not need to be
carried out.
4.1 Continuous disturbance
Replace subclauses 4.1.2 and 4.1.3 by the following:
4.1.2 Frequency range 30 MHz to 1 000 MHz
4.1.2.1 Disturbance power measurement in the frequency range 30 MHz to 300 MHz
The limits of the disturbance power are given in Table 2a. Disturbance power is measured in
accordance with Clause 6, at all terminals.
Table 2a – Disturbance power limits for the frequency range 30 MHz to 300 MHz
Household and
Tools
similar appliances

1 2 3 4 5 6 7 8 9
Frequency  Rated motor power not Rated motor power Rated motor power
range exceeding 700 W above 700 W and not above 1 000 W
exceeding 1 000 W
(MHz) dB (pW) dB (pW) dB (pW) dB (pW) dB (pW) dB (pW) dB (pW) dB (pW)
a a a a
Quasi- Average Quasi- Average Quasi- Average Quasi- Average
peak peak peak peak
Increasing linearly with the frequency from:
30 to 300
45 to 55 35 to 45 45 to 55 35 to 45 49 to 59 39 to 49 55 to 65 45 to 55
a
 If the limit for the measurement with the average detector is met when using a receiver with a quasi-peak
detector, the equipment under test shall be deemed to meet both limits and the measurement using the
receiver with an average detector need not be carried out.

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CISPR 14-1 Amend. 1 © IEC:2008 – 5 –


Table 2b – Margin when performing disturbance power measurement

in the frequency range 30 MHz to 300 MHz


Household and similar
Tools
appliances

1 2 3 4 5 6 7 8 9

Frequency  Rated motor power not Rated motor power above Rated motor power

range exceeding 700 W 700 W and not exceeding above 1 000 W
1 000 W

(MHz) dB (pW) dB (pW) dB (pW) dB (pW) dB (pW) Quasi- dB (pW) dB (pW) dB (pW)
Quasi-peak Average Quasi-peak Average peak Average Quasi-peak Average


Increasing linearly with the frequency from:
200 to 300 0 to 10 dB - 0 to 10 dB - 0 to 10 dB - 0 to 10 dB -

NOTE 1 This table only applies if specified in 4.1.2.3.2.
NOTE 2 The measured result at a particular frequency shall be less than the relevant limit minus the
corresponding margin (at that frequency).

4.1.2.2 Radiated disturbances measurement in the frequency range 30 MHz to
1 000 MHz
The limits of radiated disturbances are given in Table 3. Radiated disturbances are measured
in accordance with the standards and testing methods given in Table 3.
Table 3 – Radiated disturbance limits and testing methods
for the frequency range 30 MHz to 1 000 MHz

Testing method Standard Frequency range Limit Remark
MHz
dBμV/m
Quasi-peak
30 – 230 30

Measurement

a b d
OATS or SAC
230 – 300 37
distance 10 m
CISPR 16-2-3
300 – 1 000 37
f
30 – 230 42 to 35
Measurement
e
FAR CISPR 16-2-3
distance 3 m
230 – 1 000 42
30 – 230 30
c
TEM-Waveguide IEC 61000-4-20 –

230 – 1 000 37
NOTE The lower limit is applicable at the transition frequency.
a
 OATS = open area test site
b
 SAC = semi-anechoic chamber
c
 The TEM-waveguide is limited to devices without cables attached and with a maximum size according to
subclause 6.1 of IEC 61000-4-20 (The largest dimension of the enclosure at 1 GHz measuring frequency is
one wavelength, 300 mm at 1 GHz)
d
Measurements may be made at closer distance, down to 3 m. An inverse proportionality factor of 20 dB per
decade shall be used to normalize the measured data to the specified distance for determining compliance.
e
FAR = fully anechoic room. All equipment, including floor-standing equipment, shall be measured within the
test volume as described in Figure 6 of CISPR 16-2-3.
f
Decreasing linearly with the logarithm of the frequency.
In any situation where it is necessary to verify the original measurement, the measuring
method and measuring distance originally chosen shall be used in order to ensure
consistency of the results.

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– 6 – CISPR 14-1 Amend. 1 © IEC:2008


4.1.2.3 Application of the limits


4.1.2.3.1 General

This subclause describes application of the limits for all appliances (see Figure 10).


Regulating controls which incorporate semiconductor devices, electric fence energizers,
rectifiers, battery chargers and converters, which do not contain any clock frequency higher
than 9 kHz, are not subject to the requirements in the frequency range 30 MHz to 1 000 MHz.


4.1.2.3.2 Mains operated appliances

The equipment under test shall be evaluated for emissions in the 30 MHz to 1 000 MHz range
by testing in accordance with either method a) or b), see also Figure 10.
a) The limits in columns 2 and 3 of Table 2a for the frequency range from 30 MHz to
300 MHz shall be met by all appliances except for electric tools. For electric tools the
particular limits given in columns 4 to 9 of Table 2a apply according to the rated power of
the motor, excluding the power of any heating device (for instance heating power in a
blower for plastic welding).
Appliances are deemed to comply in the frequency range from 300 MHz to 1 000 MHz if
both of the following conditions (1) and 2)) are fulfilled:
1) all emission readings from the equipment under test shall be lower than the applicable
limits (Table 2a) reduced by the margin (Table 2b);
2) the maximum clock frequency shall be less than 30 MHz.
If either of condition 1) or 2) is not fulfilled, radiated measurements in the frequency range
from 300 MHz to 1 000 MHz shall be conducted and the limits of Table 3 for that range
applied. In any case the limits of Table 2a in the frequency range 30 MHz to 300 MHz
shall be met.
b) The limits in Table 3 shall be met. Any of the measurement methods mentioned in Table 3
can be selected by the manufacturer except that the TEM-waveguide shall be used only
for battery powered appliances not intended to have external cables attached (see also
Note c in Table 3).
The test report shall state which method was used and which limits were applied.
4.1.2.3.3 Battery operated appliances
For all battery operated appliances the limits in Table 3 apply for the frequency range from
30 MHz to 1 000 MHz (See also Figure 11). Any of the measurement methods mentioned in
Table 3 can be selected by the manufacturer except that the TEM-waveguide shall be used
only for battery powered appliances not intended to have external cables attached.
The test report shall state which method was used and which limits were applied. Battery
operated appliances which do not contain active electronic circuits or motors shall not be
measured. These appliances are considered to comply without testing.
NOTE Examples of active electronic circuits include circuits containing transistors, thyristors and relays. A LED
connected to a battery via a manual switch is not an active electronic circuit if the current is limited only by a
resistor or a transistor operating linearly, but it is an active switching circuit if the current is pulsed using a
transistor.

4.2.1 Replace the existing text by the following:
The limits for discontinuous disturbance depend mainly on the character of the disturbance
and on the click rate N as given in detail in 4.2.2 and 4.2.3.

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CISPR 14-1 Amend. 1 © IEC:2008 – 7 –


No discontinuous disturbance limits apply in the frequency range 30 MHz to 1 000 MHz.


NOTE The level of disturbances below 30 MHz is interpreted as an indication for the level above 30 MHz.





6.2.1


Replace the text of this subclause as follows:


6.2.1 The distance between the clamp test set-up (the appliance, the lead to be measured

and the absorbing clamp) and any other conductive objects (including persons, walls and
ceiling, but excluding the floor) shall be at least 0,8 m. The appliance to be tested shall be
placed on a non-metallic support table parallel to the floor. The height of the table shall be
0,1 m ± 0,025 m for appliances primarily intended to be positioned on the floor in normal use,
and 0,8 m ± 0,05 m for other appliances.
The lead to be measured is placed in a straight line for a distance sufficient to accommodate
the absorbing clamp, and to permit the necessary measuring adjustment of position for tuning.
The clamp is placed around the lead.
7.1.5 Replace the existing second paragraph by the following:
Apparatus which incorporate electronic regulating controls shall have the controls adjusted for
maximum disturbance in accordance with the procedure outlined in 7.2.6.1, in both frequency
ranges 148,5 kHz to 30 MHz and 30 MHz to 1 000 MHz.
7.2.2 Battery operated equipment
Replace the existing title and text of this subclause with the following:
7.2.2 Battery operated appliances
The appliance shall be tested operating in each permitted mode and in accordance with the
operating conditions given in 7.3.

7.2.6 Regulating controls incorporating semiconductor devices
Delete the existing note preceding subclause 7.2.6.1.


7.3.1.3
Add to this subclause the following title:
7.3.1.3 Coffee grinders and coffee makers
Add the following new subclauses:
7.3.1.3.1 Coffee grinders
Coffee grinders with a timer shall be operated without load for the maximum duration allowed
by the timer.

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– 8 – CISPR 14-1 Amend. 1 © IEC:2008


Coffee grinders without a timer shall be operated without load for the duration taken to grind

the maximum quantity of roasted coffee beans stated in the instructions.


If it is not possible to operate the grinder without load, the grinder shall be operated using the

maximum quantity of roasted coffee beans stated in the instructions.


7.3.1.3.2 Coffee makers and espresso makers with integrated grinder


Coffee makers and espresso makers with integrated grinder shall be tested according to 7.2.1.

The grinder function shall be tested according to 7.3.1.3.1.


If the operation time of the coffee grinder can be set by the user, it should be set to maximum
duration.
7.3.1.3.3 Fully automatic coffee makers
Fully automatic coffee makers shall be tested according to 7.2.1. The different functions shall
be tested sequentially so that all possible disturbance sources are covered.
The test conditions shall reflect the normal operation of the appliance, as stated in the
instructions for use. Where these are not specified, the following separate modes of operation
shall be tested:
• keep warm mode for fully automated coffee makers;
• pre-heating for espresso coffee makers;
• 1 cup of coffee (approximately 125 ml) per minute;
• 200 ml hot water, followed by 30 s pause;
• 20 s steam consumption per minute.

7.3.1.12
Replace the third paragraph of this subclause by the following:
Separate tumble dryers are operated with half the maximum dry weight of cotton textile
material recommended in the manufacturer's instruction for use. The material shall be soaked
with water having a temperature of 25 °C ± 5 °C and a mass of 60 % of that of the textile
material.


7.3.2.10
Delete the existing subclause.

After Subclause 7.3.4.14, add the following new subclause:
7.3.4.15 Rice cookers shall be tested with the rated capacity of tap water and with the lid
closed. If there is no indication of the rated capacity, the cooker shall be filled with 80 % water
of the maximum capacity of the inner pot.

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CISPR 14-1 Amend. 1 © IEC:2008 – 9 –


If the cooker automatically enters a “keep warm”-mode at the end of the cooking process, the

cooking mode should be ended manually and the click measurement shall be started at the

time of the first operation of the thermostat, which controls the “keep warm” temperature.




7.3.6.1 Classification


Replace, in the dashed item under Category B, the reference to “4.1.3” by “4.1.2.2”.


Replace the second paragraph under Category C, including its dashed items, by the following

sentence:

Toys of category C shall comply with the limits from 30 MHz to 1 000 MHz.
Replace, in the second dashed item under Category D, the reference to “4.1.2 (disturbance
power)” by the following:
– 4.1.2.1 (disturbance power) and 4.1.2.2 (radiated disturbances)
Replace, in the second dashed item under Category E, the reference to “4.1.3” by “4.1.2.2”.

7.3.7 Miscellaneous equipment and appliances
Replace the existing note by the following:
NOTE Limits in the frequency range 30 MHz to 1 000 MHz are not applicable to the devices quoted in 7.3.7.1 to
7.3.7.3, causing only discontinuous disturbance (see 4.2.1).

Add the following new subclause 7.4.1.6:
7.4.1.6 The radiated emission limits apply throughout the frequency range from 30 MHz to
1 000 MHz.
Renumber existing subclause 7.4.1.6 to 7.4.1.7.
Renumber existing subclause 7.4.1.7 to 7.4.1.8.

8.3 Compliance with limits for appliances in large-scale production
Replace the existing text of this subclause by the following:
Statistically assessed compliance with the limits shall be made according to one of the three
tests described below or to some other test which ensures compliance with the requirements
of 8.1.2 above.
The test according to 8.3.1 or 8.3.2 should be performed on a sample of not less than 5 items
of the type, but if, in exceptional circumstances, 5 items are not available, then a sample of 3
or 4 shall be used.
The test according to 8.3.3 should be performed on a sample of not less than 7 items.
NOTE It is recommended to start the evaluation with the method described in 8.3.1 and only in case the test has
not been passed to continue with the more extensive methods described in 8.3.2 and 8.3.3.

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– 10 – CISPR 14-1 Amend. 1 © IEC:2008


8.3.1 Test based on a general margin to the limit


Compliance is given when the measured values from all items of the sample are under the

limit and the margin to the limit is not shorter than the general margin, given in Table 4 below.


Table 4 – General margin to the limit for statistical evaluation


Sample size (n) 3 4 5 6

General margin to the limit (dB) 3,8 2,5 1,5 0,7


This method shall not be used to consider a product as non-compliant.

NOTE The newly introduced method in this subclause is based on CISPR 16-4-3.
Compliance is given, when
x + k σ < L
max E max
where
x is the highest (worse) value of all items in the sample;
max
k is the coefficient from the Table below, depending on the sample size;
E
σ is a conservative value for the standard deviation in a product group;
max
L is the limit.
Sample size (n) 3 4 5 6
Coefficient k 0,63 0,41 0,24 0,12
E

CISPR 16-4-3 recommends a value σ = 6,0 dB for both the terminal voltage and the disturbance power. For
max
radiated disturbances, measured on appliances in the scope of this standard, the same value for σ has been
max
assumed. The values for the general margin to the limit in the Table 4 above are a simple multiplication of this
6,0 dB with the coefficient k . In Table 4 values are given only for a sample size up to n = 6 because for n = 7 or
E
higher the method given in 8.3.3 can be applied, where the binomial distribution without an additional margin is
used.
8.3.2 Test based on the non-central t-distribution
Compliance is judged from the following relationship:
x + kS ≤ 0
n
where
x is the arithmetic mean of the values x of n items in the sample;

n
k is the factor, derived from tables of the non-central t-distribution which ensures with
80 % confidence that 80 % or more of the type is below the limit;
the value of k depends on the sample size n and is stated in Table 5 below.
Table 5 – Factor k for the application of the non-central t-distribution
n 3 4 5 6 7 8 9 10 11 12
k 2,04 1,69 1,52 1,42 1,35 1,3 1,27 1,24 1,21 1,2

where
2 2
S is equals to Σ( x - x ) / (n -1);

n n
S is the standard deviation of the sample;
n

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CISPR 14-1 Amend. 1 © IEC:2008 – 11 –


x is determined as follows: for each of the defined frequency ranges, the differences
n

between the measured values and the limit are defined. The difference is negative

where the measured value is below the limit and positive where it is higher than the
th

limit. For the n individual sample, x is the difference value at the frequency where
n

the difference curve shows its maximum.

NOTE If all measured values are below the limit, x = the shortest distance to the limit. If some of the measured
n

values are above the limit, x = highest value by which the limit is exceeded.
n


The statistical evaluation shall be carried out separately for the following frequency ranges:

Terminal voltage: a) 150 kHz - 500 kHz


  b) 500 kHz - 5 MHz
  c) 5 MHz - 30 MHz

Disturbance power: a) 30 MHz - 100 MHz
  b) 100 MHz - 200 MHz
  c) 200 MHz - 300 MHz

Radiated disturbances: a) 30 MHz - 230 MHz
  b) 230 MHz - 500 MHz
  c) 500 MHz - 1 000 MHz
The quantities x , x , and S are expressed logarithmically (dB(μV) or dB(pW) or dB(μV/m)).
n n
If all measured values are under the limit and the test is failed only due to a high standard
deviation, it shall be investigated whether this high standard deviation has been unjustifiably
caused by a maximum of x at the borderline between two frequency subranges. In this case
n
the evaluation has to be done according to 8.3.3.
NOTE The figure at the end of this note illustrates the possible difficulties if a maximum of the measured
disturbances occurs near the borderline between two frequency sub-ranges. "U" is the measured disturbance
voltage; "f" is the frequency. Here two units with different characteristics out of a sample are shown. For broadband
disturbances the value of the maximum as well as the frequency of the maximum can change from unit to unit,
differences as between unit 1 and unit 2 in a sample are typical. An average value and standard deviation is
calculated for all units (of which two are shown) for each subrange. In this example the calculated standard
deviation is much higher for subrange 1 than subrange 2 (e.g. consider how different the values of x and x are at
1 2
the borderline). Even though the average for subrange 1 is much lower than subrange 2, after taking into
consideration the high value of S multiplied by the factor out of Table 5, in rare cases this could lead to the
n
sample set failing the given criteria. Since this is simply a consequence of the way in which the frequency sub-
ranges have been defined, no statistically meaningful conclusion can be drawn regarding compliance.
Frequency
Frequency
subrange
subrange

U
2
1
Limit
x
1
Unit 2
Unit 1
x
2
f
IEC  1904/08

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– 12 – CISPR 14-1 Amend. 1 © IEC:2008


8.3.3 Test based on the binomial distribution


Compliance is judged from the condition that the number of appliances with an interference

level above the appropriate limit may not exceed c in a sample of size n, see Table 6.


Table 6 – Application of the binomial distribution


n 7 14 20 26 32

c 0 1 2 3 4




8.3.4 Larger sample size
Should the test on the sample result in non-compliance with the requirements, then a second
sample may be tested and the result combined with those from the first sample and
compliance checked for the larger sample size.
NOTE For general information see CISPR 16-4-3.

8.4 The banning of sales
Replace the existing title and text of this subclause by the following:
8.4 Non-compliance
A type shall be considered non-compliant with the require
...