Publication 801-3 COMMISSION ELECTROTECHNIQUE INTERNATIONALE NORME DELA CEI INTERNATIONAL ELECTROTECHNICALCOMMISSION IEC STANDARD Publication 801-3 Premiere edition -First edition 1984 TROISIEMEIMPRESSION 1991 THIRDIMPRESSION1991 Compatibilite électromagnetique pour les materiels de mesure et de commande dans les processus industriels Troisieme partie: Prescriptions relatives aux champs de rayonnements électromagnetiques Electromagnetic compatibility for industrial-process measurement and control equipment Part 3: Radiated electromagnetic field requirements ENGINEERING DOCUMENTS With The Permission Of IEC Under Royalty Agreement CCEI1984 Droits-de reproduction'reseves - Copyright - l ights reserved Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembe Geneve, Suisse Revision de la presente publication Revision of this publication Le contenu technique des publications de la CEIest constam- The technical content ofIEC publications is kept under con- mentrevu parla Commission afind'assurerqu'ilreflete bien I'etat stant review by the IEC, thus ensuring that the content reflects actuel de la technique. current technology. Information on the work of revision,the issue ofrevised edi- Les renseignements relatifs a ce travail de revision,a r'etablis- sement des editions revisees et aux mises a jour peuvent etre tions and amendment sheets maybe obtained fromIEC National obtenus aupres des Comites nationaux de la CEIeten consultant Committees and from the followingIEC sources: les documents ci-dessous: Bulletin de la CEI IEC Bulletin IEC Yearbook Annuaire de la CEI . Catalogue des publications de la CEI Catalogue of IEC Publications ? Publie annuellement Published yearly Terminologie Terminology En ce quiconcermela terminologie generale,le lecteur se repor For general terminology, readers are referred to IEC Publi- tera a la Publication 50 de la CEI:Vocabulaire Electrotechnique cation 50: Intemational Electrotechnical Vocabulary (IEV),which International(VEI),quiestetabliesousformedechapitressepares is issued in the form of separate chapters each dealing with a specific field, the General Index being published as a separate traitant chacun d'un sujetdefini.f'lndex general etant publie sepa- rement. Des details complets sur le VEl peuvent etre obtenus sur booklet. Full details of the IEV will be supplied on request. demande. Les termes et definitions figurant dans la presente'publication Theterms and definitions contained in thepresentpublication ont ete soit repris du VEl,soit specifiquement approuves aux fins have either been taken from the IEV or have been specifically de cetle publication. approved for the purpose of this publication. Symboles graphiques et litteraux Graphical and letter symbols Pour les symboles graphiques, symboles litteraux et signes For graphical symbols, and letter symbols and signs approved d'usage general approuves par la CEI, le lecteur consultera: by the IEC for general use, readers are referred to: la Publication 27de la CEI:Symboles litueraux a utiliser en -IEC Publication 27: Letter symbols to be used in electrical technology; eiectrotechnique: la Publication 617 de la CEI: Symboles graphiques pour IEC Publication 617:Graphical symbols for diagrams. schemas. Les symbolesetsignescontenusdansla presente publication ont The symbols and signs contained in the present publication ete soit repris desPublications 27ou 617 de la CEI,soit specifi- have either been taken fromIEC Publications 27or 617,or have been specifically approved for the purpose of this publication. quement approuves aux fins de cette publication. Publications de la CEI etablies par le meme IEC publications prepared by the same Comite d'Etudes Technical Committee L'attention du lecteur est attiree sur le deuxieme feuillet de la The attention of readers is drawn to theback cover,which lists 1EC publications issued by the Technical Committee which has couverture,quienumerelespublicationsdelaCEIprepareespar le Comite d'