IEC 60050-221:1990/AMD3:2007

Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 221: Magnetic materials and components

Amendement 3 - Vocabulaire Electrotechnique International (IEV) - Partie 221: Matériaux et composants magnétiques

General Information

• Status: Published
• Publication Date: 23-Apr-2007
• ICS: 01.040.29 - Electrical engineering (Vocabularies)
• ICS: 29.030 - Magnetic materials
• Technical Committee: TC 1 - Terminology
• Drafting Committee: MT 1 - TC 7/MT 1
• Current Stage: PPUB - Publication issued
• Start Date: 30-Apr-2006
• Completion Date: 24-Apr-2007

Relations

• Amends: IEC 60050-221:1990 - International Electrotechnical Vocabulary (IEV) - Part 221: Magnetic materials and components
• Effective Date: 05-Sep-2023

Overview

IEC 60050-221:1990/AMD3:2007 is the third amendment to the International Electrotechnical Vocabulary (IEV) Part 221, which focuses on magnetic materials and components. Published by the International Electrotechnical Commission (IEC), this standard provides essential terminology and definitions related to magnetic materials and their components, supporting consistent understanding, communication, and application across electrical and electronic engineering industries.

This amendment updates critical terms such as the temperature factor of permeability and introduces new definitions related to magnetic total harmonic distortion. These updates ensure precision and relevance with current technological trends and practices.

Key Topics

• Temperature Factor of Permeability (αF)

  • Defines the quotient of the temperature coefficient of permeability by permeability at a reference temperature.
  • Serves as a material property to calculate the coefficient of temperature-dependent effective permeability.
  • Mathematical expressions for precise evaluation using permeability values at specific temperatures.

• Magnetic Total Harmonic Distortion (THD)

  • Describes voltage waveform distortion due to the non-linear relationship between magnetic flux density and magnetic field strength in ferrite cores.
  • Expressed in decibels (dB) using harmonic amplitudes of the induced voltage waveform.
  • Relevant for assessing the performance of magnetic materials under alternating current conditions.

• Total Harmonic Distortion Factor (THDF)

  • A mathematical factor for characterizing the nonlinear distortion effects in magnetic materials.
  • Includes parameters such as amplitude permeability and circuit correction factors to ensure accuracy in practical measurements.
  • Important for evaluating the quality of magnetic cores and for optimizing electromagnetic component designs.

• Core Factor (C)

  • Revised formula for the core inductance parameter, used in the analysis of magnetic circuit properties.

Applications

IEC 60050-221 Amendment 3 plays a vital role in diverse applications involving magnetic materials and components:

• Electrical and Electronic Component Design

  • Guides engineers in selecting, specifying, and testing magnetic materials based on standardized terminology.
  • Assists in quantifying temperature effects and harmonic distortion phenomena critical to component reliability.

• Magnetic Core Manufacturing

  • Supports quality control and performance assessment via harmonic distortion metrics and permeability temperature factors.
  • Facilitates improved materials characterization and development for transformers, inductors, and magnetic sensors.

• Electromagnetic Compatibility Testing

  • Enables precise evaluation of waveform distortions caused by magnetic components, aiding in electromagnetic interference (EMI) mitigation strategies.

• Technical Communication

  • Provides an internationally harmonized vocabulary essential for collaboration, documentation, and standard compliance in electrotechnical fields.

Related Standards

• IEC 60050 Series

  • The broader International Electrotechnical Vocabulary covering various electrotechnical terminology areas.

• IEC 60404 Series

  • Standards focused on magnetic materials testing methods and specifications.

• IEC 61800 Series

  • Pertains to adjustable speed electrical power drive systems, where magnetic component performance is critical.

• IEC 61508

  • Functional safety standards that may reference magnetic component reliability.

Summary

IEC 60050-221 Amendment 3 (2007) updates the standardized terminology and definitions for magnetic materials and components, emphasizing temperature-dependent magnetic permeability and total harmonic distortion factors. These technical terms are essential for engineers and professionals engaged in designing, testing, and applying magnetic materials in electrical and electronic devices. Adherence to this internationally recognized vocabulary enhances consistency, precision, and clarity in the electrotechnical industry worldwide. For the latest information and updates, users should consult the IEC webstore and official IEC publications catalog.

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD CEI
60050-221
NORME
INTERNATIONALE
AMENDEMENT 3
AMENDMENT 3
2007-04
Amendment 3
International Electrotechnical Vocabulary –
Part 221:
Magnetic materials and components

Amendement 3
Vocabulaire Electrotechnique International –
Partie 221:
Matériaux et composants magnétiques
Reference number
Numéro de référence
IEC/CEI 60050-221 Amend. 3:2007

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INTERNATIONAL IEC
STANDARD CEI
60050-221
NORME
INTERNATIONALE
AMENDEMENT 3
AMENDMENT 3
2007-04
Amendment 3
International Electrotechnical Vocabulary –
Part 221:
Magnetic materials and components

Amendement 3
Vocabulaire Electrotechnique International –
Partie 221:
Matériaux et composants magnétiques

PRICE CODE
Commission Electrotechnique Internationale CODE PRIX J
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur

– II – 60050-221 Amend. 3  IEC:2007

AVANT-PROPOS
Le présent amendement a été établi par le comité d'études 1 de la CEI: Terminologie
Le texte de cet amendement est issu des documents suivants:
FDIS Rapport de vote
1/1966/FDIS 1/1973/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
Le comité a décidé que le contenu de cet amendement et de la publication de base ne sera
pas modifié avant la date de maintenance indiquée sur le site web de la CEI sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,
la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
60050-221 Amend. 3  IEC:2007 – III –

FOREWORD
This amendment has been prepared by IEC technical committee 1: Terminology
The text of this amendment is based on the following documents:
FDIS Report on voting
1/1966/FDIS 1/1973/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base 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.
60050-221 Amend. 3  IEC:2007 – 1 –

PARTIE 221: MATÉRIAUX ET COMPOSANTS MAGNÉTIQUES
PART 221: MAGNETIC MATERIALS AND COMPONENTS

Remplacer l’article 221-02-49 par le suivant:
Replace the entry 221-02-49 by the following:
221-02-49
symb.: α
F
facteur de température de la perméabilité
Quotient du coefficient de température de la perméabilité par la perméabilité à la température
θ.
α
µ − µ
µ
θ ref
α = =
F
µ µ µ()θ − θ
θ θ ref ref
ou
α
µ − µ
µ
θ ref
α = =
F
µ
()
ref µ θ − θ
ref
ref
si µ et µ diffèrent de manière insignifiante.
θ ref
NOTE Le facteur de température de la perméabilité est une propriété du matériau qui permet de
calculer le coefficient de température de la perméabilité effective α en multipliant µ par µ :
µe F e
α = α ⋅ µ .
µe F e
temperature factor of permeability
quotient of the temperature coefficient of permeability by the permeability at temperature Θ.
α µ − µ
µ θ ref
α = =
F
µ µ µ()θ −θ
θ θ ref ref
or
α µ − µ
µ θ ref
α = =
F
µ µ()θ −θ
ref ref ref
when µ and µ differ insignificantly.
θ ref
NOTE The temperature factor of permeability is a material property which enables to calculate the
temperature coefficient of effective permeability α by multiplying µ by µ :

µe F e
α = α ⋅ µ .
µe F e
ar ﺔﻴﺴﻴﻃﺎﻨﻐﻤﻟا ﺔﻴﻌﻧﺎﻤﻤﻠﻟ ىراﺮﺤﻟا ﻞﻣﺎﻌﻤﻟا
de Temperaturfaktor der Permeabilität, m
es factor de temperatura de la permeabilidad
it .
ja 透磁率の相対温度係数
pl współczynnik temperaturowy przenikalności magnetycznej
pt factor de temperatura da permeabilidade
sv .
zh 磁导率的温度因数
– 2 – 60050-221 Amend. 3  IEC:2007

Remplacer la formule de l’article 221-02-51 par la suivante:
Replace the formula of entry 221-02-51 by the following:
()µµ−( )
eeθ ref
α =
µe
()µθ( −θ )
eref ref
Ajouter les articles suivants (à placer après 221-03-40)
Add the following entries (to be placed after 221-03-40)
221-03-41
symb.: THD
distorsion harmonique totale (magnétique)
distorsion de la forme d'onde de la tension causée par une relation non linéaire entre
l'induction magnétique et le champ électrique dans un noyau en ferrite et exprimée en
décibels par:
()
THD = 20lg V /V dB
m f
où
∞
V = V
m ∑ n
n=1
V est l'amplitude du n-ième harmonique de la forme d'onde et V est l'amplitude du
n f
fondamental.
(magnetic) total harmonic distortion
distortion of voltage waveform caused by non-linear relation between the magnetic flux
density and the magnetic field strength in the magnetic core and expressed in decibels by:
THD = 20lg()V /V dB
m f
where
∞
V = V
∑
m n
n=1
V is the amplitude of the n-th harmonic component of the waveform and V is the amplitude of
n f
its fundamental compo
...