CSA C61000-3-11:21

(IEC 61000-3-11:2017, MOD)

National Standard of Canada Norme nationale du Canada

CSA C61000-3-11:21

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 61000-3-11:2017, MOD)

CSA C61000-3-11:21

Compatibilité électromagnétique (CEM) — Partie 3-11 : Limitation des variations de tension, des fluctuations de tension et du papillotement dans les réseaux publics d’alimentation basse

tension — Équipements ayant un courant assigné ≤ 75 A et soumis à un raccordement conditionnel

(IEC 61000-3-11:2017, MOD)

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  CSA C61000-3-11:21

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  Title: 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

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National Standard of Canada

CSA C61000-3-11:21

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 61000-3-11:2017, MOD)

Prepared by

International Electrotechnical Commission

Reviewed by

®A trademark of the Canadian Standards Association, operating as “CSA Group”

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ICS 33.100.10

ISBN 978-1-4883-3190-9

© 2021 Canadian Standards Association

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

CSA C61000-3-11:21

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

CSA C61000-3-11:21

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 61000-3-11:2017, MOD)

CSA Preface

This is the second edition of CSA C61000-3-11, 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, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 61000-3-11 (second edition, 2017-04). It supersedes the previous edition, published in 2006 as CAN/CSA-C61000-3-11 (adopted IEC 61000-3-11:2000).

For brevity, this Standard will be referred to as “CSA C61000-3-11” throughout.

This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.

This Standard was reviewed for Canadian adoption by the CSA Subcommittee on Low-Frequency Electromagnetic Compatibility, under the jurisdiction of the CSA Technical Committee on Electromagnetic Compatibility and the CSA Strategic Steering Committee on Power Engineering and Electromagnetic Compatibility, and has been formally approved by the Technical Committee.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

© 2021 Canadian Standards Association

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. IEC material is reprinted with permission. Where the words “this International Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.

April 2021 © 2021 Canadian Standards Association CSA/8

CSA C61000-3-11:21

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

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April 2021 © 2021 Canadian Standards Association CSA/9

– 2 – IEC 61000-3-11:2017 © IEC 2017

CONTENTS

FOREWORD 3

INTRODUCTION 5

1. Scope 6

2. Normative references 6

3. Terms and definitions 7

4. Requirements 7

5. Limits 8

6. Test, measurement and evaluation procedures 9

   1. Overview 9

   2. Test and measurement procedures 9

      1. Test impedance Ztest 9

      2. Test of equipment against Ztest 10

      3. Evaluation against Zref 10

   3. Evaluation and declaration by the manufacturer of the maximum permissible

      system impedance 10

      1. Comparison of calculated and measured emission values with Clause 5

         limits to enable a declaration of compliance with IEC 61000-3-3 10

      2. Calculation of the maximum permissible system impedance 10

   4. Evaluation and declaration by the manufacturer of the minimum permissible

service current capacity 11

Annex A (informative) Explanation of flicker exponents 12

1. Overview 12

2. Explanation of Clause 6 12

Annex B (informative) Flow chart showing the evaluation and test procedures leading

to the connection of equipment 17

Figure A.1 – Typical motor starting RMS voltage variation plot 12

Figure A.2 – Visualization of the relationship between items of equipment “n” and Pst 15

Figure A.3 – Impedance requirements as a function of individual Pst@Zref values and

penetration level n 16

Figure B.1 – Flow chart showing the evaluation and test procedures leading to the

connection of equipment 17

Figure B.2 – Reference network for single and three-phase supplies derived from a

three-phase, four-wire supply 18

Table 1 – Suffixes and their applications 9

CSA C61000-3-11:21

– 6 – IEC 61000-3-11:2017 © IEC 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

1. Scope

   
   

   This part of IEC 61000 is concerned with the emission of voltage changes, voltage fluctuations and flicker produced by equipment and impressed on the public low-voltage supply system.

   
   

   It specifies the limits of voltage changes produced by equipment tested under specified conditions.

   
   

   This document is primarily applicable to electrical and electronic equipment having a rated input current from 16 A up to and including 75 A, which is intended to be connected to public low-voltage distribution systems having nominal system voltages of between 220 V and 250 V, line-to-neutral at 50 Hz, and which is subject to conditional connection.

   
   

   This document is also applicable to equipment within the scope of IEC 61000-3-3 that does not meet the limits when tested or evaluated with reference impedance Zref and is therefore subject to conditional connection. Equipment which meets the requirements of IEC 61000-3-3

   is excluded from this part of IEC 61000.

   
   

   Equipment tests made in accordance with this document are type tests.

   
   

   NOTE 1 The flicker limits specified in this document, being the same as those in IEC 61000-3-3, are based on the subjective severity of the flicker imposed on the light from 230 V/60 W coiled-coil filament lamps when subjected to fluctuations of the supply voltage. For systems with nominal voltages less than 220 V, line-to-neutral and/or frequency of 60 Hz, the limits and reference circuit values are under consideration.

   
   

   NOTE 2 The limits in this document relate to the voltage changes experienced by consumers connected at the interface between the public supply low-voltage network and the equipment user’s installation. Therefore, it cannot be guaranteed that the users of equipment compliant with this standard will not experience supply disturbance within their own installation due to the operation of this equipment alone, as the impedance at the point of connection of the equipment to the supply within the installation can have an impedance greater than the maximum permissible impedance as determined by the procedures in this document.

   
   

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 60050-161, International Electrotechnical Vocabulary (IEV) – Chapter 161: Electro- magnetic compatibility (available at www.electropedia.org)

IEC TR 60725, Consideration of reference impedances and public supply network impedances for use in determining the disturbance characteristics of electrical equipment having a rated current ≤75 A per phase

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

CSA C61000-3-11:21