IEC 60404-7-ed.2.0

Annotation of standard text IEC 60404-7-ed.2.0 :

IEC 60404-7:2019 specifies a method of measurement of the coercivity of magnetic materials in an open magnetic circuit. This document is applicable to all magnetic materials with coercivities from 0,2 A/m to 160 kA/m. This edition includes the following significant technical changes with respect to the previous edition: Clause 1: The scope includes a more detailed description of the magnetic materials which applies to this standard; Clause 4: Figure 2 – circuit diagram for methods A and B was simplified and the fluxgate probes inside the solenoid have been added; Clause 7: Compensation for the earth’s magnetic field and for static and dynamic magnetic noise fields has been added; Clause 8: Magnetic shielding of the measuring region has been added; 9.2.2: The measuring methods for local and integral measurement of the flux in the test specimen have been separated and the limitations in size and shape of the test specimen have been considered. 9:3: The method C with a VSM (Vibrating Sample Magnetometer) has been moved from 9.3 to the Annex B. The term "complex shaped test specimen" has been replaced in several clauses by "test specimen different from ellipsoids". The character of Annex A has been changed from “informative” to “normative”. LIEC 60404-7:2019 specifie une methode de mesure de la coercitivite des materiaux magnetiques en circuit magnetique ouvert. Le present document est applicable a lensemble des materiaux magnetiques dont les valeurs de coercitivite sont comprises entre 0,2 A/m et 160 kA/m. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: Article 1: le domaine dapplication inclut une description plus complete des materiaux magnetiques qui sapplique a la presente norme; Article 4 – Figure 2: le schema du circuit pour les Methodes A et B a ete simplifie et les sondes de flux a seuil a linterieur du solenoide ont ete ajoutees; Article 7: la compensation du champ magnetique terrestre et des champs magnetiques parasites statiques et dynamiques a ete ajoutee; Article 8: le blindage magnetique de la zone de mesure a ete ajoute; 9.2.2: les methodes de mesure pour le mesurage local et integral du flux dans leprouvette ont ete separees, et les limites de taille et de forme de leprouvette ont ete prises en compte; 9.3: la Methode C avec un VSM (magnetometre a echantillon vibrant) a ete deplacee du 9.3 a lAnnexe B; le terme "eprouvette de forme complexe" a ete remplace dans plusieurs articles par le terme "eprouvette differente des ellipsoides"; le statut de lAnnexe A a ete modifie; cette annexe nest plus "informative" mais "normative".