Aktívna norma | Vydaná: 24.09.2014

IEC 62489-2-ed.2.0

Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 2: Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human exposure
(Electroacoustique - Systemes de boucles d´induction audiofrequences pour ameliorer l´audition - Partie 2: Methodes de calcul et de mesure des emissions de champ magnetique basse frequence a partir de la boucle pour l´evaluation de la conformite aux instructions sur les limites d´exposition humaine)

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Podrobné informácie

Označenie: IEC 62489-2-ed.2.0

Dátum vydania: 24.09.2014

Stránok: 30

Krajina: Medzinárodná technická norma

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Anotácia

IEC 62489-2:2014 applies to audio-frequency induction-loop systems for assisted hearing. It may also be applied to such systems used for other purposes, as far as it is applicable. The standard is intended for assessment of human exposure to low-frequency magnetic fields produced by the system, by calculation and by in-situ testing. This standard does not deal with other aspects of safety, for which IEC 60065 applies, or with EMC. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision which includes significant technical changes to reflect several updates to the ICNIRP Guide (Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields) to which it makes frequent reference. The most significant change is that the underlying metric in the Guide has been changed from tissue current density to induced electric field. Keywords: hearing aid, accessibility, surdity, deafness LIEC 62489-2:2014 sapplique aux systemes de boucles dinduction audiofrequences pour ameliorer laudition. Elle peut egalement etre appliquee a de tels systemes utilises a dautres fins, si ladite application est possible. La norme est destinee a levaluation de lexposition humaine a des champs magnetiques basse frequence produits par le systeme, par le calcul et par lessai in-situ. La presente norme ne traite pas dautres aspects de la securite, pour laquelle lIEC 60065 sapplique, ni de la CEM. Cette deuxieme edition annule et remplace la premiere edition parue en 2011. Cette edition constitue une revision technique qui inclut les modifications techniques majeures afin de refleter plusieurs mises a jour du Guide ICNIRP (Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields) auquel il est fait frequemment reference. Le changement le plus significatif est que la grandeur de base dans le guide est passee dune densite de courant dans les tissus a un champ electrique induit. Mots cle: accessibilite, sonotone, surdite

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