SIST EN 61326-1:2007
(Main)Electrical equipment for measurement, control and laboratory use - EMC requirements -- Part 1: General requirements
Electrical equipment for measurement, control and laboratory use - EMC requirements -- Part 1: General requirements
This part of IEC 61326 specifies requirements for immunity and emissions regarding electromagnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of less than 1 000 V a.c. or 1 500 V d.c. or from the circuit being measured, intended for professional, industrial-process, industrial-manufacturing and educational use, including equipment and computing devices for - measurement and test; - control; - laboratory use; - accessories intended for use with the above (such as sample handling equipment), intended to be used in industrial and non-industrial locations. Computing devices and assemblies and similar equipment within the scope of Information Technology Equipment (ITE) and complying with applicable ITE EMC standards can be used in systems within the scope of this part of IEC 61326 without additional testing, if it is suitable for the intended electromagnetic environment. This product family standard takes precedence over generic standards. The following equipment is covered in this standard. a) Electrical measurement and test equipment This is equipment, which by electrical means measures, indicates or records one or more electrical or non-electrical quantities, also non-measuring equipment such as signal generators, measurement standards, power supplies and transducers. b) Electrical control equipment This is equipment, which controls one or more output quantities to specific values, with each value determined by manual settings, by local or remote programming, or by one or more input variables. This includes Industrial Process Measurement and Control (IPMC) equipment, which consists of devices such as: - process controllers and regulators; - programmable controllers; - power supply units for equipment and systems (centralized or dedicated); - analogue/digital indicators and recorders; - process instrumentation; - transducers, positioners, intelligent actuators, etc. c) Electrical laboratory equipment This is equipment which measures, indicates monitors or analyses substances, or is used to prepare materials, and includes In Vitro Diagnostic (IVD) equipment. This equipment may also be used in areas other than laboratories, for example self-test IVD equipment may be used in the home. This standard is applicable to - equipment for use in residential, commercial and light-industrial environments, according to IEC 61000-6-1; - equipment for use in industrial locations; - equipment for use in laboratories or test and measurement areas with a controlled electromagnetic environment; - portable test and measurement equipment.
Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen -- Teil 1: Allgemeine Anforderungen
Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la CEM -- Partie 1: Exigences générales
énonce les exigences relatives à l'immunité et aux émissions concernant la compatibilité électromagnétique (CEM) pour les matériels électriques fonctionnant à partir d'une source d'alimentation inférieure à 1 000 V en courant alternatif ou 1 500 V en courant continu ou à partir du circuit mesuré, prévus pour un usage professionnel, pour les processus industriels et pour l'enseignement, comprenant les matériels et les dispositifs informatiques. Le contenu des corrigendum de février 2008 et de février 2010 a été pris en considération dans cet exemplaire.
Električna oprema za merjenje, kontrolo in laboratorijsko uporabo - Zahteve za elektromagnetno združljivost (EMC) - 1. del: Splošne zahteve (IEC 61326-1:2005)
General Information
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Standards Content (Sample)
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EUROPEAN STANDARD EN 61326-1 NORME EUROPÉENNE
EUROPÄISCHE NORM May 2006
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61326-1:2006 E
ICS 25.040.40; 33.100 Supersedes EN 61326:1997 + A1:1998 + A2:2001 + A3:2003
English version
Electrical equipment for measurement,
control and laboratory use – EMC requirements Part 1: General requirements (IEC 61326-1:2005)
Matériel électrique de mesure,
de commande et de laboratoire – Exigences relatives à la CEM Partie 1: Exigences générales (CEI 61326-1:2005)
Elektrische Mess-, Steuer-, Regel-
und Laborgeräte – EMV-Anforderungen Teil 1: Allgemeine Anforderungen (IEC 61326-1:2005)
This European Standard was approved by CENELEC on 2006-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
EN 61326-1:2006 - 2 - Foreword The text of document 65A/456/FDIS, future edition 1 of IEC 61326-1, prepared by SC 65A, System aspects, of IEC TC 65, Industrial-process measurement and control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61326-1on 2006-02-01. The EN 61326 series supersedes EN 61326:1997 + corrigendum September 1998 + A1:1998 + A2:2001 + A3:2003. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2006-12-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2009-02-01 This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive 89/336/EEC. See Annex ZZ. Annexes ZA and ZZ have been added by CENELEC. . __________ Endorsement notice The text of the International Standard IEC 61326-1:2005 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60359 NOTE
Harmonized as EN 60359:2002 (not modified). IEC 61010 series NOTE
Harmonized in the EN 61010 series (not modified). __________
- 3 - EN 61326-1:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications The following referenced documents are indispensable for the application 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. NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050-161 –1) International Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility – – IEC 61000-3-2 (mod) 2000 Electromagnetic compatibility (EMC) Part 3-2: Limits – Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
EN 61000-3-22) 2000 IEC 61000-3-3 A1 1994 2001 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.
EN 61000-3-3 A1 1995 2001 IEC 61000-3-11 2000 Part 3-11: Limits – Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems - Equipment with rated current ≤ 75A and subject to conditional connection
EN 61000-3-11 2000 IEC 61000-3-12 2004 Part 3-12: Limits – Limits for harmonic currents produced by equipment connected to public low voltage systems with input current > 16A and ≤ 75A per phase
EN 61000-3-12 2005 IEC 61000-4-2 A1 A2 1995 1998 2000 Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test
EN 61000-4-2 A1 A2 1995 1998 2001 IEC 61000-4-3 2002 Part 4-3: Testing and measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
EN 61000-4-3 2002 IEC 61000-4-4 2004 Part 4-4: Testing and measurement techniques – Electrical fast transient/burst immunity test
EN 61000-4-4 2004 IEC 61000-4-5 A1 1995 2000 Part 4-5: Testing and measurement techniques – Surge immunity test
EN 61000-4-5 A1 1995 2001
1) Undated reference. 2) EN 61000-3-2 is superseded by EN 61000-3-2:2006, which is based on IEC 61000-3-2:2005.
EN 61326-1:2006 - 4 - Publication Year Title EN/HD Year IEC 61000-4-6 2003 Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields
– 3) – IEC 61000-4-8 A1 1993 2000 Part 4-8: Testing and measurement techniques – Power frequency magnetic field immunity test
EN 61000-4-8 A1 1993 2001 IEC 61000-4-11 2004 Part 4-11: Testing and measurement techniques – Voltage dips, short interruptions and voltage variations immunity tests
EN 61000-4-11 2004 IEC 61000-6-1 2005 Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments
– 4) – CISPR 11 2003 Industrial, scientific and medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics – Limits and methods of measurement.
– 5) –
3) IEC 61000-4-6:1996 + A1:2000 are harmonized as EN 61000-4-6:1996 +
A1:2001. 4) IEC 61000-6-1 (mod.) is harmonized as EN 61000-6-1:2001. 5) CISPR 11:1997 (mod.) + A1:1999 + A2:2002 are harmonized as EN 55011:1997 + A1:1999 + A2:2002.
- 5 - EN 61326-1:2006
Annex ZZ (informative)
Coverage of Essential Requirements of EC Directives This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and within its scope the standard covers all relevant essential requirements as given in Article 4 of the EC Directive 89/336/EEC. Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive concerned. WARNING: Other requirements and other EC Directives may be applicable to the products falling within the scope of this standard. ___________
NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 61326-1Première éditionFirst edition2005-12 Matériel électrique de mesure, de commande et de laboratoire – Exigences relatives à la CEM – Partie 1: Exigences générales
Electrical equipment for measurement, control
and laboratory use – EMC requirements – Part 1: General requirements Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2005
Droits de reproduction réservés
Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch CODE PRIX PRICE CODE R Commission Electrotechnique InternationaleInternational Electrotechnical Commission
61326-1 IEC:2005 – 3 –
CONTENTS FOREWORD.5 INTRODUCTION.9
1 Scope.11 2 Normative references.13 3 Terms and definitions.15 4 General.19 5 EMC test plan.19 5.1 General.19 5.2 Configuration of EUT during testing.21 5.2.1 General.21 5.2.2 Composition of EUT.21 5.2.3 Assembly of EUT.21 5.2.4 I/O ports.21 5.2.5 Auxiliary equipment.21 5.2.6 Cabling and earthing (grounding).21 5.3 Operation conditions of EUT during testing.21 5.3.1 Operation modes.21 5.3.2 Environmental conditions.23 5.3.3 EUT software during test.23 5.4 Specification of performance criteria.23 5.5 Test description.23 6 Immunity requirements.23 6.1 Conditions during the tests.23 6.2 Immunity test requirements.23 6.3 Random aspects.31 6.4 Performance criteria.31 6.4.1 Performance criterion A.31 6.4.2 Performance criterion B.31 6.4.3 Performance criterion C.31 7 Emission requirements.33 7.1 Conditions during measurements.33 7.2 Emission limits.33 8 Test results and test report.33 9 Instructions for use.33
Annex A (normative)
Immunity test requirements for portable test and measurement equipment.35
Bibliography.37
61326-1 IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE – EMC REQUIREMENTS –
Part 1: General requirements
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 international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
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 IEC 61326-1 has been prepared by subcommittee 65A: System aspects, of IEC technical committee 65: Industrial-process measurement and control. The IEC 61326 series cancels and replaces IEC 61326:2002 and constitutes a technical revision. The text of this standard is based on the following documents: FDIS Report on voting 65A/456/FDIS 65A/464/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.
61326-1 IEC:2005 – 7 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 61326-1 consists of the following parts, under the general title Electrical equipment for measurement, control and laboratory use – EMC requirements: Part 1:
General requirements – (Annexes A and B of IEC 61326: 2002 are integrated in the main body of IEC 61326-1) Part 2-1:
Sensitive test and measurement equipment for EMC unprotected applications (Annex D of IEC 61326: 2002) Part 2-2:
Portable test, measuring and monitoring equipment used in low-voltage distribution systems (Annex E of IEC 61326:2002) Part 2-3:
Transducers with integrated or remote signal conditioning (includes Annex F of IEC 61326: 2002) Part 2-4:
Insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9 (new)
Part 2-5:
Test configurations, operational conditions and performance criteria for field devices with interfaces according to communication profile Family 3 Profile 3/2 (new) Part 2-6: In vitro diagnostic (IVD) medical equipment (new) Part 3-1:
Immunity requirements for equipment performing or intended to perform safety related functions (functional safety) – Part 3.1: General industrial applications (The matter of functional safety in Table 2 of IEC 61326:2002 is incorporated into IEC 61326-3-1). The committee has decided that the contents of this 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.
61326-1 IEC:2005 – 9 –
INTRODUCTION Instruments and equipment within the scope of this standard may often be geographically widespread and may have to operate under a wide range of environmental conditions. The limitation of undesired electromagnetic emissions ensures that no other equipment, installed nearby, is unduly influenced by the equipment under consideration. The limits are more or less specified by, and therefore taken from, IEC and International Special Committee on Radio Interference (CISPR) publications. However, the equipment has to function without undue degradation in a typical electromagnetic environment. The limit values for immunity specified in this standard have been chosen under this assumption. Special risks, involving for example nearby or direct lightning strikes, circuit-breaking, or exceptionally high electromagnetic radiation in close proximity, are not covered. Complex electric and/or electronic systems require EMC planning in all phases of their design and installation, taking into consideration the electromagnetic environment, any special requirements, and the severity of failures. This part of IEC 61326 specifies the EMC requirements that are generally applicable to all equipment within its scope. For certain types of equipment, these requirements will be supplemented or modified by the special requirements of one, or more than one, particular part within IEC 61326-2. These should be read in conjunction with the IEC 61326-1 requirements.
61326-1 IEC:2005 – 11 –
ELECTRICAL EQUIPMENT FOR MEASUREMENT,
CONTROL AND LABORATORY USE – EMC REQUIREMENTS –
Part 1: General requirements
1 Scope This part of IEC 61326 specifies requirements for immunity and emissions regarding electro-magnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of less than 1 000 V a.c. or 1 500 V d.c. or from the circuit being measured, intended for professional, industrial-process, industrial-manufacturing and educational use, including equipment and computing devices for – measurement and test; – control; – laboratory use; – accessories intended for use with the above (such as sample handling equipment),
intended to be used in industrial and non-industrial locations. Computing devices and assemblies and similar equipment within the scope of Information Technology Equipment (ITE) and complying with applicable ITE EMC standards can be used in systems within the scope of this part of IEC 61326 without additional testing, if it is suitable for the intended electromagnetic environment. This product family standard takes precedence over generic standards. The following equipment is covered in this standard. a) Electrical measurement and test equipment
This is equipment, which by electrical means measures, indicates or records one or more electrical or non-electrical quantities, also non-measuring equipment such as signal generators, measurement standards, power supplies and transducers. b) Electrical control equipment
This is equipment, which controls one or more output quantities to specific values, with each value determined by manual settings, by local or remote programming, or by one or more input variables. This includes Industrial Process Measurement and Control (IPMC) equipment, which consists of devices such as: – process controllers and regulators; – programmable controllers;
– power supply units for equipment and systems (centralized or dedicated); – analogue/digital indicators and recorders; – process instrumentation; – transducers, positioners, intelligent actuators, etc.
61326-1 IEC:2005 – 13 –
c) Electrical laboratory equipment
This is equipment which measures, indicates monitors or analyses substances, or is used to prepare materials, and includes In Vitro Diagnostic (IVD) equipment. This equipment may also be used in areas other than laboratories, for example self-test IVD equipment may be used in the home. This standard is applicable to – equipment for use in residential, commercial and light-industrial environments, according to IEC 61000-6-1; – equipment for use in industrial locations; – equipment for use in laboratories or test and measurement areas with a controlled electromagnetic environment; – portable test and measurement equipment.
2 Normative references The following referenced documents are indispensable for the application 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 IEC 61000-3-2:2000, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic current emissions (equipment input current ≤ 16A per phase) IEC 61000-3-3:2002, 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. IEC 61000-3-11:2000, 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 ≤ 75A and subject to conditional connection IEC 61000-3-12:2004, Electromagnetic compatibility (EMC) – Part 3-12: Limits – Limits for harmonic currents produced by equipment connected to public low voltage systems with input current > 16A and ≤ 75A per phase IEC 61000-4-2:2001, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measure-ment techniques – Electrostatic discharge immunity test IEC 61000-4-3:2002, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measure-ment techniques – Radiated, radio-frequency, electromagnetic field immunity test IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measure-ment techniques – Electrical fast transient/burst immunity test
61326-1 IEC:2005 – 15 –
IEC 61000-4-5:2001, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measure-ment techniques – Surge immunity test IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measure-ment techniques – Immunity to conducted disturbances, induced by radio-frequency fields IEC 61000-4-8:1993, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measure-ment techniques – Power frequency magnetic field immunity test
Amendment 1 (2000) IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measure-ment techniques – Voltage dips, short interruptions and voltage variations immunity tests IEC 61000-6-1:2005, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards –Immunity for residential, commercial and light-industrial environments CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics – Limits and methods of measurement. 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. Other definitions, not included in IEC 60050-161 and this standard, but nevertheless necessary for the application of the different tests, are given in the EMC basic publications of the IEC 61000 series. 3.1 type test conformity test made on one or more items representative of the production
[IEV 151-16-16] 3.2 port any particular interface of the specific device or system with the external electromagnetic environment within the scope of this part of IEC 61326 (see Figure 1 for an example of Equipment Under Test (EUT)) NOTE I/O ports are input, output or bi-directional, measurement, control, or data ports.
EUTEnclosure port
Functional earth port I/O port AC power port DC power port IEC
1119/98
Figure 1 – Examples of ports
61326-1 IEC:2005 – 17 –
3.3 enclosure port physical boundary of equipment through which electromagnetic fields may radiate or impinge 3.4 class A equipment equipment suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network which supplies buildings used for domestic purposes [CISPR 11, 4.2] 3.5 class B equipment equipment suitable for use in domestic establishments and in establishments directly connected to a low-voltage power supply network which supplies buildings used for domestic purposes [CISPR 11, 4.2] 3.6 long-distance lines lines within a building which are longer than 30 m, or which leave the building (including lines of outdoor installations) 3.7 industrial locations locations characterized by a separate power network, in most cases supplied from a high- or medium-voltage transformer, dedicated for the supply of installations feeding manufacturing or similar plants with one or more of the following conditions: – frequent switching of heavy inductive or capacitive loads; – high currents and associated magnetic fields; – presence of Industrial, Scientific and Medical (ISM) apparatus (for example, welding machines) 3.8 laboratory or test and measurement area area that is specifically used for analysis, testing and servicing and where equipment is operated by trained personnel 3.9 controlled electromagnetic environment environment usually characterized by recognition and control of EMC threats by users of the equipment or design of the installation 3.10 functional earthing earthing a point or points in a system or in an installation or in equipment, for purposes other than electrical safety [IEV 195-01-13, modified] NOTE The EUT port used for functional earthing is called functional earth port.
61326-1 IEC:2005 – 19 –
4 General Equipment and systems within the scope of this standard can be subjected to various kinds of electromagnetic disturbances, conducted by power, measurement or control lines, or radiated from the environment. The types and levels of disturbances depend on the particular conditions in which the systems, subsystems or equipment are installed and operate. Equipment such as generators, analysers or frequency meters shall fulfil the requirements under the conditions defined by the manufacturer (that is without a test object connected, or connecting a 50 Ω termination to the output of a signal generator). The manufacturer shall give information that emissions, which exceed the levels required by this standard, may occur when equipment is connected to a test object. Equipment and individual devices of a system within the scope of this standard may also be a source of electromagnetic disturbances over a wide frequency range. These disturbances may be conducted through power and signal lines, or be directly radiated, and may affect the performance of other equipment, or influence the external electromagnetic environment. For emissions, the objective of these requirements is to ensure that the disturbances generated by the equipment and systems, when operated normally, do not exceed a level which could prevent other systems from operating as intended.
The emission limits are considered in 7.2 To comply with this standard, no additional EMC tests are required beyond those stated here. NOTE 1 Higher immunity levels than those specif
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