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eLibrary > PD IEC TR 61000-1-4:2022 Electromagnetic compatibility (EMC) - General. Historical rationale for the limitation of power-frequency conducted harmonic current emissions from equipment, in the frequency range up to 2 kHz >

PD IEC TR 61000-1-4:2022 Electromagnetic compatibility (EMC) - General. Historical rationale for the limitation of power-frequency conducted harmonic current emissions from equipment, in the frequency range up to 2 kHz, 2023

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PD IEC TR 61000-1-4:2022 Electromagnetic compatibility (EMC) - General. Historical rationale for the limitation of power-frequency conducted harmonic current emissions from equipment, in the frequency range up to 2 kHz, 2023

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CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General appraisal
5 Acceptable provisions in standards related to regulatory legislation
6 History of IEC 61000-3-2 and its predecessors [Go to Page]
6.1 History table
6.2 Before 1960
6.3 1960 to 1975
6.4 1975 to 1982
6.5 1982 to 1995
6.6 1995 to 2000
6.7 The “Millennium Amendment”
6.8 2000 to 2019
6.9 2020 to 2022 [Go to Page]
6.9.1 Impact factor approach
6.9.2 Effect of the coronavirus pandemic from 2020 to 2022
7 History of IEC 61000-3-12 and its predecessor [Go to Page]
7.1 Origin
7.2 1989 to 1998
7.3 After 1998
8 History of IEC 61000-4-7 up to 2008 [Go to Page]
8.1 First edition in 1991
8.2 Second edition in 2002
8.3 Amendment 1 to the second edition
8.4 Developments since 2008
9 Economic considerations taken into account in setting limits in IEC 6100032 before publication in 1995, and before the finalization of the text of the Millennium Amendment
Annexes [Go to Page]
Annex A (informative) Compatibility level and compensation factor [Go to Page]
A.1 Explanation of the allocation of only part of the total compatibility level to the low-voltage network
A.2 Compensation factor [Go to Page]
A.2.1 Maximum permissible current emission – original approach
Figures [Go to Page]
Figure A.1 – Harmonic voltage drops and harmonic current injections in a typical system [Go to Page]
[Go to Page]
A.2.2 Detailed consideration
Tables [Go to Page]
Table A.1 – Compensation factors kp,h considered valid in 1995 (IEC 61000-3-2:1995 [1] (first edition))
Table A.2 – Sub-factors of kp,h [Go to Page]
[Go to Page]
A.2.3 New work prompted by the preparation of this document
Table A.3 – Compensated sharing factors
Figure A.2 – Permissible number of Class A loads versus harmonic order, with an additional 10 Ω load on the feeder
Annex B (informative) Comparison of Class A limits and the harmonic spectra of phase-controlled dimmers of incandescent lamps at 90° firing angle
Figure B.1 – Comparison of Class A limits and spectra of dimmers
Annex C (informative) Comparison of Class C (IEC 61000-3-2:2018 and IEC 61000-3-2:2018/AMD1:2020, Table 2) limits and the harmonic spectrum of a discharge lamp with inductive ballast
Figure C.1 – Comparison of Class C limits and the harmonic spectrum of a discharge lamp
Annex D (informative) Comparison of Class D limits and the harmonic spectra of capacitor-filtered single-phase rectifiers with 35° and 65° conduction angles
Figure D.1 – Comparison of Class D limits and harmonic spectra of single-phase 230 W rectifiers with capacitor filters
Annex E (informative) Economic considerations taken into account in setting limits, before finalization of the text of the Millennium Amendment to IEC 61000-3-2
Figure E.1 – Illustration of the concept of total aggregate cost trade-offs for meeting compatibility levels
Annex F (Informative) Concept plan for a full revision of IEC 61000-3-2 [Go to Page]
F.2 Density
F.3 Usage factor
F.4 Contribution
F.5 Phase angle factor
F.6 System and site mitigation
F.7 Network factors
Annex G (informative) Histories of IEC 61000-3-2 and IEC 61000-3-12 and related standards
Table G.1 – Publication history of IEC 61000-3-2
Table G.2 – Publication history of IEC 61000-3-12
Table G.3 – Publication history of IEC 61000-4-7
Bibliography [Go to Page]

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PD IEC TR 61000-1-4:2022 Electromagnetic compatibility (EMC) - General. Historical rationale for the limitation of power-frequency conducted harmonic current emissions from equipment, in the frequency range up to 2 kHz, 2023

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