oSIST prEN IEC 55014-1:2025 (frag2)

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

Elektromagnetische Verträglichkeit - Anforderungen an Haushaltgeräte, Elektrowerkzeuge und ähnliche Elektrogeräte - Teil 1: Störaussendung

Compatibilité électromagnétique - Exigences pour les appareils électrodomestiques, les outils électriques et les appareils analogues - Partie 1: émissions

Elektromagnetna združljivost - Zahteve za (električne) gospodinjske aparate, električna ročna orodja in podobne aparate - 1. del: Oddajanje

General Information

• Status: Not Published
• Public Enquiry End Date: 25-May-2025
• ICS: 33.100.10 - Emission
• Technical Committee: EMC - Electromagnetic compatibility
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 12-Mar-2025
• Due Date: 30-Jul-2025
• Completion Date: 19-May-2025
• Ref Project: prEN IEC 55014-1:2025 {frag2} - Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus - Part 1: Emission

Overview

prEN IEC 55014-1:2025 (frag2) - also referenced as CISPR 14-1/FRAG2 - updates the electromagnetic compatibility (EMC) emission requirements for household appliances, electric tools and similar apparatus. This fragment specifically adds normative requirements for microwave ovens intended for residential use and locations directly connected to low-voltage domestic supply networks. The document defines conducted and radiated emission limits, measurement procedures and site-validation requirements for compliance testing.

Key topics and technical requirements

• Scope extension: Microwave ovens for residential environments are now included in CISPR 14-1 (with a transitional option to use CISPR 11). Industrial-class microwave applications (CISPR 11 class A) remain excluded.
• Conducted emissions: Limits are defined for mains and wired network ports in the 150 kHz to 30 MHz band (no limits specified for 9 kHz–150 kHz). Measurements use the CISPR artificial mains network (50 Ω/50 µH) or the CISPR voltage probe; separate limits apply for voltage and current on wired ports.
• Radiated emissions: Limits are given:
  • Magnetic field limits up to 30 MHz,
  • Electric field limits above 30 MHz,
  • Specific tables for 150 kHz–1 GHz and 1 GHz–18 GHz (including peak, averaged, Log‑AV weighted and APD-based limits).
• Detectors and measurement methods: Peak, Quasi‑Peak (QP), Average (AV), Log‑AV weighting and Amplitude Probability Distribution (APD) methods are referenced. APD is specified for certain 1–18 GHz checks.
• Test distances and sites: Measurements may be performed at 3 m or 10 m on OATS or SAC; FAR measurements are allowed if the EUT fits the validated volume. Test sites must be validated per CISPR 16-1-4 and measurement procedures align with CISPR 16-2-3/CISPR 32 where applicable.
• EUT load and setup for microwave ovens: Normal accessories in place and a 1 L tap‑water load (borosilicate glass cylinder, external diameter 190 mm ±5 mm, height 90 mm ±5 mm - reference: IEC 60705).
• Special workflow: Flowcharts and decision trees guide when peak, weighted and APD measurements are required (including follow-up measurements where limits are exceeded).

Applications and who should use this standard

• Appliance and microwave oven manufacturers - design and EMC compliance for products sold into residential markets.
• EMC test laboratories - to perform conducted and radiated emission testing in accordance with updated procedures and detectors.
• Product certification bodies, compliance engineers and regulators - to verify conformity and to interpret transitional arrangements with CISPR 11.
• R&D and design teams - to identify emission control needs early in product development.

Related standards

• CISPR 11 (industrial/ISM equipment)
• CISPR 16‑1‑4 / CISPR 16‑2‑3 (test site validation and measurement)
• CISPR 32 (measurement procedures and ancillary equipment)
• IEC 60705 (microwave oven water load specification)

Keywords: IEC 55014-1, CISPR 14-1, electromagnetic compatibility, EMC emission limits, microwave ovens, conducted emissions, radiated emissions, APD, quasi-peak, test site validation.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2025
Elektromagnetna združljivost - Zahteve za (električne) gospodinjske aparate,
električna ročna orodja in podobne aparate - 1. del: Oddajanje
Electromagnetic compatibility - Requirements for household appliances, electric tools
and similar apparatus - Part 1: Emission
Compatibilité électromagnétique - Exigences pour les appareils électrodomestiques, les
outils électriques et les appareils analogues - Partie 1: émissions
Ta slovenski standard je istoveten z: prEN IEC 55014-1:2025 {frag2}
ICS:
33.100.10 Emisija Emission
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CIS/F/887/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
CISPR 14-1/FRAG2 ED8
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-03-07 2025-05-30
SUPERSEDES DOCUMENTS:
CIS/F/860/CD, CIS/F/877A/CC
IEC CIS/F : INTERFERENCE RELATING TO HOUSEHOLD APPLIANCES, TOOLS, LIGHTING EQUIPMENT AND SIMILAR
APPARATUS
SECRETARIAT: SECRETARY:
Australia Ms Suba Ananth
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 61,CISPR
ASPECTS CONCERNED:
Electromagnetic Compatibility
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights
of which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

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

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

IEC CISPR 14-1/FRAG2/Ed8 © IEC:2025 -2- CIS/F/887/CDV

1 INTRODUCTION
3 The CISPR F Plenary in November 2023 has decided to start maintenance of CISPR 14-1
4 (see decision 23/02 in CIS/F/846/DL) following the positive response detailed in
5 CIS/F/831/RQ.
6 The topics for maintenance have been further developed by WG1 and arranged in a series of
7 fragments named as follows:
8 Frag 1 – General technical and editorial changes
9 Frag 2 – Inclusion of requirements for microwave ovens from CISPR 11
10 Frag 3 – Magnetic field test method with small loop antenna
11 Frag 4 – Testing of products with radio functions
12 Frag 5 – Deletion of Annex D on statistical evaluation
13 Frag 6 – EUT height and height scan during radiated emission measurements
14 Frag 7 – Introduction of the APD measuring function in CISPR 14-1
16 This document is the CDV for fragment 2. It is based on CIS/F/860/CD, CIS/F/877A/CC and
17 the discussions in CIS/F/WG1 during its meetings Nov. 2024.
CISPR 14-1/FRAG2 ED8 © CISPR 2024 3
19 ELECTROMAGNETIC COMPATIBILITY –
20 REQUIREMENTS FOR HOUSEHOLD APPLIANCES,
21 ELECTRIC TOOLS AND SIMILAR APPARATUS –
23 Part 1: Emission
25 1 Scope
26 Add a new bullet item after Note 3:
27 • microwave ovens suitable for use in locations in residential environments and in
28 establishments directly connected to a low voltage power supply network which supplies
29 buildings used for domestic purposes (see Annex X)
30 Note X: Microwave ovens intended for use in all locations other than those allocated in residential environments and
31 those directly connected to a low voltage power supply network which supplies buildings used for domestic purposes
32 are in the scope of CISPR 11.
33 Note Y: During a transitional period, microwave ovens suitable for use in locations in residential environments and
34 in establishments directly connected to a low voltage power supply network which supplies buildings used for
35 domestic purposes, either CISPR 11 or CISPR 14-1 can be chosen for compliance.”
37 Add the following new bullet item at the end of the list “Excluded from the scope of this
38 document are:”
39 - Microwave applications for use in industrial environments, respectively classified in CISPR
40 11 as class A equipment, are covered by CISPR 11.
41 3.10 Abbreviated Terms
42 Add the following new abbreviations and sort them alphabetically into the existing list:
44 APD Amplitude Probability Distribution
45 QP Quasi-Peak
46 AV Average
IEC CISPR 14-1/FRAG2/Ed8 © IEC:2025 -4- CIS/F/887/CDV

48 Add the following Annex X:
49 Annex X
50 (normative)
51 Requirements for microwave ovens
52 X.1 General
53 This annex applies to microwave ovens suitable for use in locations in residential environments
54 and in establishments directly connected to a low voltage power supply network which supplies
55 buildings used for domestic purposes.
56 Note: Microwave applications for use in industrial environments, respectively classified in CISPR 11 as class A
57 equipment, are covered by CISPR 11.
58 All disturbances have to be measured on a test site.
59 X.2 Limits for conducted disturbances
60 X.2.1 Frequency range 9 kHz to 150 kHz
61 In the frequency range 9 kHz to 150 kHz limits are not specified.
62 X.2.2 Frequency range 150 kHz to 30 MHz
63 Limits for the disturbance voltage at low voltage AC mains power ports in the frequency range
64 150 kHz to 30 MHz for equipment measured on a test site using the 50 Ω/50 µH CISPR artificial
65 mains network (V-AMN) or the CISPR voltage probe are given in Table X.1.
66 Limits for conducted disturbances at wired network ports in the frequency range 150 kHz to
67 30 MHz for equipment measured on a test site are given in Table X.2.
68 Table X.1 – Disturbance voltage limits (a.c. mains power port)
Frequency range Quasi-peak Average
MHz dBµV dBµV
66 56
Decreasing linearly with logarithm Decreasing linearly with logarithm
0,15 to 0,50
of frequency to of frequency to
56 46
0,50 to 5 56 46
5 to 30 60 50
At the transition frequency, the more stringent limit shall apply.
CISPR 14-1/FRAG2 ED8 © CISPR 2024 5
71 Table X.2 – Limits for conducted disturbances (wired network port)
Voltage Current
Frequency range
QP AV QP AV
MHz
dBµV dBµV dBµA dBµA
0,15 to 0,5 84 to 74 74 to 64 40 to 30 30 to 20
0,5 to 30 74 64 30 20
In the frequency range from 0,15 MHz to 0,5 MHz the limits in this table decrease linearly with the logarithm of
frequency.
Excluding measurement uncertainty, all other elements within CISPR 32 shall be applied, including but not
limited to the selection of measurement procedures, test configuration, cable characteristics and ancillary
equipment (current probe, capacitive voltage probe and/or artificial network).
NOTE 1   The voltage and current disturbance limits are based on a common mode impedance of 150 Ω for
the wired network port under test.
NOTE 2   The application of the voltage and/or current disturbance limits is dependent on the port type and
on the measurement procedure used; see Table C.1 of CISPR 32:2015/AMD1:2019.
73 X.3 Limits for electromagnetic radiation disturbances
74 X.3.1 General
75 The equipment under test shall meet the limits when using a measuring instrument with a peak,
76 quasi-peak, average or Log-AV detector or the APD measuring function as indicated in the
77 appropriate table.
78 Up to 30 MHz the limits refer to the magnetic component of the electromagnetic radiation
79 disturbance. Above 30 MHz the limits refer to the electric field strength component of the
80 electromagnetic radiation disturbance.
81 X.3.2 Frequency range 9 kHz to 150 kHz
82 In the frequency range 9 kHz to 150 kHz limits are not specified.
83 X.3.3 Frequency range 150 kHz to 1 GHz
84 Except for the designated frequency range listed in CISPR 11, Table 1, the electromagnetic
85 radiation disturbance limits for the frequency range 150 kHz to 1 GHz are specified in Table X.3.
86 The limits in Table X.3 apply to all electromagnetic disturbances at all frequencies not
87 exempted according to CISPR 11, Table 1 Footnote b).
88 On an open-area test site (OATS) or in a semi-anechoic chamber (SAC), the equipment may
89 be measured at a nominal distance of 3 m or 10 m (see Table X.3).
90 In a fully-anechoic room (FAR) the equipment may be measured at a nominal distance of 3 m,
91 provided that the EUT fits into the validated test volume of the given FAR.
IEC CISPR 14-1/FRAG2/Ed8 © IEC:2025 -6- CIS/F/887/CDV

93 Table X.3 – Electromagnetic radiation disturbance limits for microwave ovens
OATS or SAC FAR
Limits for a measuring distance D in m
b
D = 10 m D = 3 m D = 3 m
D = 3 m
Frequency range
Electric field Magnetic
Electric field
MHz
field
a a a
Quasi- Quasi- Quasi-peak Quasi-
Average Average Average
peak peak peak
dB(µV/m) dB(µV/m) dB(µA/m) dB(µV/m)
Decreasing
linearly with
0,15 to 30 – – – –
the logarithm
of frequency to
30 to 80,872 30 25 40 35 – 42 to 39 37 to 34
80,872 to 81,848 50 45 60 55 – 59 54
81,848 to 134,786 30 25 40 35 – 39 to 37 34 to 32
134,786 to 136,414 50 45 60 55 – 57 52
136,414 to 230 30 25 40 35 – 37 to 35 32 to 30
230 to 1 000 37 32 47 42 – 42 37
On an OATS or in a SAC, class B equipment may be measured at a nominal distance of 3 m or 10 m.
At the transition frequency, the more stringent limit shall apply. In certain frequency ranges, the limit for
measurements in the FAR decrease linearly with the logarithm of frequency.
a
If microwave ovens exceed the quasi-peak limit at certain frequencies, then the measurement shall be repeated
at these frequencies with the average detector and the average limits specified in this table apply.
b
The microwave oven shall fit into the validated test volume of the FAR. In the range below 30 MHz, the
microwave ovens shall be measured at an OATS or in a SAC (see limits in the respective magnetic field column
in this table).
95 X.3.4 Frequency range 1 GHz to 18 GHz
96 The limits specified in the Tables X.4 to X.6 apply only to RF disturbances appearing outside
97 designated ISM bands as listed in CISPR 11, Table 1.
98 The electromagnetic radiation disturbance limits for the frequency range 1 GHz to 18 GHz are
99 specified in Tables X.4 to X.6. The equipment shall meet either the limits of Table X.4, or at
100 least the limits of Table X.5 or Table X.6 (see decision tree in Figure X.1).
CISPR 14-1/FRAG2 ED8 © CISPR 2024 7
102 Table X.4 – Electromagnetic radiation disturbance peak limits
Limits for a measurement distance of 3 m
Frequency range
Peak
GHz dB(µV/m)
1 to 18
Within harmonic frequency bands 70
Outside harmonic frequency bands 70
Peak measurements with a resolution bandwidth of 1 MHz and a video signal bandwidth
(VBW) higher than or equal to 1 MHz. The recommended VBW is 3 MHz.
NOTE In this table, “harmonic frequency bands” means the frequency bands which are
multiples of the ISM bands allocated above 1 GHz.
104 Table X.5 – Electromagnetic radiation disturbance weighted limits (Log-AV weighting)
Frequency range Limits for a measuring distance of 3 m
weighted
GHz dB(µV/m)
1 to 2,4 60
2,5 to 5,725 60
5,875 to 18 60
Weighted measurements shall be performed with a resolution bandwidth of 1 MHz and a video bandwidth of 10 Hz.
To check conformance with the limits of this table, weighted measurements shall be performed in all the following
frequency ranges, in which the limit of Table X.4 was exceeded during the peak measurement:
a
a) 1,0 GHz to 2,4 GHz ;
a
b) 2,5 GHz to 6,125 GHz (outside the band 5,72 GHz to 5,88 GHz) ;
c) 6,125 GHz to 8,575 GHz;
d) 8,575 GHz to 11,025 GHz;
b
e) 11,025 GHz to 13,475
...