IEC TR 61807:1999
Current
The latest, up-to-date edition.
Magnetic properties of magnetically hard materials at elevated temperatures - Methods of measurement
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English - French
20-10-1999
Foreword
1 Scope
2 Reference documents
3 Definitions
4 Symbols
5 Review of existing permanent magnet materials
6 Measuring equipment
7 Evaluation of measured data
8 Test report
Annex A - Results of an inter-comparison of measurement
on magnetically hard (permanent magnet)
material at elevated temperature
A.1 - Introduction
A.2 - Test specimens
A.3 - Method of measurement
A.4 - Results
A.5 - Conclusions
Annex B - Example calculations
B.1 - Magnetically anisotropic sintered NdFeB
magnet
B.2 - Magnetically anisotropic sintered
Sr-ferrite magnet
Provides methods for measuring magnetically hard materials, at elevated temperatures. Magnetically hard materials (permanent magnet materials) are classified in IEC 60404-1 and their properties are specified in IEC 60404-8-1. The methods of measurement of the magnetic properties of magnetically hard materials at room temperature have been specified in IEC 60404-5 for closed magnetic circuits and in IEC 60404-7 for open magnetic circuits, respectively. The applications of magnetically hard materials are now expanding to elevated temperatures and it is therefore required to specify and guarantee the magnetic properties of these materials over their working temperature range. In IEC 60404-8-1 temperature coefficients of remanence (or saturation) and J-coercivity have been specified in addition to basic properties such as maximum magnetic energy product ((BH)max), remanence (Br), B-coercivity (HcB), J-coercivity (HcJ), recoil permeability (µrec) and density.
Committee |
TC 68
|
DevelopmentNote |
Stability Date: 2015. (10/2012)
|
DocumentType |
Technical Report
|
Pages |
25
|
PublisherName |
International Electrotechnical Committee
|
Status |
Current
|
Standards | Relationship |
NEN NPR IEC/TR 61807 : 1999 | Identical |
14/30282391 DC : 0 | BS EN 60404-5 ED 3.0 - MAGNETIC MATERIALS - PART 5: PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS - METHODS OF MEASUREMENT OF MAGNETIC PROPERTIES |
IEC TR 62331:2005 | Pulsed field magnetometry |
PD IEC/TR 62331:2005 | Pulsed field magnetometry |
BS EN 60404-5:2015 | Magnetic materials Permanent magnet (magnetically hard) materials. Methods of measurement of magnetic properties |
PD IEC/TR 62518:2009 | Rare earth sintered magnets. Stability of the magnetic properties at elevated temperatures |
IEC 60404-5:2015 RLV | Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties |
I.S. EN 60404-5:2015 | MAGNETIC MATERIALS - PART 5: PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS - METHODS OF MEASUREMENT OF MAGNETIC PROPERTIES |
IEC TR 62518:2009 | Rare earth sintered magnets - Stability of the magnetic properties at elevated temperatures |
EN 60404-5:2015 | Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties |
IEC 60050-151:2001 | International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices |
IEC 60404-8-1:2015 | Magnetic materials - Part 8-1: Specifications for individual materials - Magnetically hard materials |
IEC 60050-221:1990 | International Electrotechnical Vocabulary (IEV) - Part 221: Magnetic materials and components |
IEC 60404-5:2015 RLV | Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties |
IEC 60050-121:1998 | International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism |
IEC 60404-1:2016 | Magnetic materials - Part 1: Classification |
IEC 60404-7:1982 | Magnetic materials. Part 7: Method of measurement of the coercivity of magnetic materials in an open magnetic circuit |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.