IEC 60050-121:1998/AMD2:2008
(Amendment)Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
Amendement 2 - Vocabulaire Electrotechnique International (IEV) - Partie 121: Electromagnétisme
General Information
- Status
- Published
- Publication Date
- 27-Aug-2008
- Technical Committee
- TC 1 - Terminology
- Drafting Committee
- MT 100 - TC 1/MT 100
- Current Stage
- PPUB - Publication issued
- Start Date
- 15-Mar-2008
- Completion Date
- 28-Aug-2008
Relations
- Amends
IEC 60050-121:1998 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism - Effective Date
- 05-Sep-2023
Overview
IEC 60050-121:1998/AMD2:2008 is the second amendment to the International Electrotechnical Vocabulary (IEV) Part 121, focusing on Electromagnetism. Published by the International Electrotechnical Commission (IEC), this amendment updates and refines terminology related to electromagnetism, ensuring precise, consistent, and internationally harmonized definitions. IEC plays a crucial role as the global leader in creating and maintaining standards for electrical, electronic, and related technologies, making this vocabulary essential for professionals in the electrotechnical sector worldwide.
The amendment enhances understanding of key electromagnetic concepts such as induced voltage, induced current, electromagnetic induction, and properties of magnetic materials-bridging theory with practical engineering applications. It ensures clarity in technical communication and supports innovation in electrical engineering by providing an authoritative reference.
Key Topics
Quasi-Infinitesimal Quantities: Defines spatial elements in electromagnetic systems whose dimensions are small relative to the system but contain a sufficient number of elementary entities. These are fundamental in differentiating extensive and intensive electromagnetic quantities, crucial for accurate modeling and analysis.
Induced Voltage and Current: Clarifies terms like induced voltage, defined as the scalar line integral of vector quantities along a path where charge carriers move, and induced current, which results from charge displacement due to induced voltage. These concepts form the basis of electromagnetic induction phenomena.
Electromagnetic Induction: Describes the process by which an induced voltage or current is generated, supporting a deeper comprehension of devices such as transformers, inductors, and electric generators.
Magnetic Material Properties:
- Curie Temperature: Specifies the temperature threshold distinguishing ferromagnetic or ferrimagnetic phases from paramagnetic states in magnetic materials. Important for designing sensors and magnetic components.
- Quantum Hall Effect: Details the integer quantum Hall effect, a macroscopic quantum phenomenon observed in two-dimensional electron systems under low temperatures and magnetic fields, crucial for advanced research and metrology.
Electric Conduction Effects:
- Proximity Effect: Explains non-uniform distribution of electric current in conductors or semiconductors due to neighboring currents, relevant for optimizing conductor layout and minimizing losses.
- Alternating-Current Josephson Effect: Covers the quantum effect where an applied voltage across a Josephson junction induces an alternating current of Cooper pairs. This principle underpins superconducting devices and voltage standards.
Applications
The updated definitions and concepts in IEC 60050-121:1998/AMD2:2008 have vast practical applications across multiple technology fields, including:
Electrical Engineering and Design: Precise vocabulary for electromagnetic parameters aids engineers in designing efficient electrical machines, transformers, and inductive components.
Material Science and Magnetic Devices: Understanding Curie temperature and electromagnetic properties supports development of magnetic sensors, actuators, and smart materials.
Quantum Technologies: Clarifications of effects like the Josephson effect and quantum Hall effect support advancement in quantum computing, superconductivity, and high-precision electrical measurements.
Power Systems: Insights into induced currents and proximity effects help optimize power transmission lines and reduce electromagnetic interference.
Standards Development and Compliance: Enables consistency in documentation, testing, and certification processes across international markets, facilitating global trade and interoperability.
Related Standards
IEC 60050: The broader International Electrotechnical Vocabulary series offering comprehensive terminological coverage across electrical, electronic, and related technologies.
IEC 60375: Describes conventions for electromagnetic quantities such as induced voltage, complementing the definitions in IEC 60050-121.
IEC 60050-112: A companion vocabulary segment under preparation focused on intensive and extensive quantities fundamental to electromagnetism.
CODATA Values: The amendment references CODATA’s internationally accepted physical constants, underscoring the integration of precise scientific data.
Electropedia: The online resource hosting the International Electrotechnical Vocabulary, enabling easy access to up-to-date terminology across multiple languages.
Keywords: IEC 60050-121 amendment, International Electrotechnical Vocabulary, electromagnetism terminology, induced voltage definition, Curie temperature, quantum Hall effect, Josephson effect, electromagnetic induction, proximity effect, electrical conduction, IEC standards, electrotechnical vocabulary, electromagnetic properties of materials.
Frequently Asked Questions
IEC 60050-121:1998/AMD2:2008 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism". This standard covers: Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
IEC 60050-121:1998/AMD2:2008 is classified under the following ICS (International Classification for Standards) categories: 01.040.17 - Metrology and measurement. Physical phenomena (Vocabularies); 17.220.01 - Electricity. Magnetism. General aspects; 29.020 - Electrical engineering in general. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60050-121:1998/AMD2:2008 has the following relationships with other standards: It is inter standard links to IEC 60050-121:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 60050-121:1998/AMD2:2008 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
Standards Content (Sample)
IEC 60050-121
Edition 2.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
International Electrotechnical Vocabulary –
Part 121: Electromagnetism
Vocabulaire Electrotechnique International –
Partie 121: Electromagnétisme
IEC 60050-121:1998/A2:2008
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IEC 60050-121
Edition 2.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
International Electrotechnical Vocabulary –
Part 121: Electromagnetism
Vocabulaire Electrotechnique International –
Partie 121: Electromagnétisme
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
J
CODE PRIX
ICS 01.040.17; 29.020; 17.220.01 ISBN 2-8318-9994-X
– 2 – 60050-121 Amend. 2 © CEI 2008
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
1/2053/FDIS 1/2059/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.
___________
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
1/2053/FDIS 1/2059/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.
_____________
60050-121 Amend. 2 © CEI 2008 – 3 –
SECTION 121-11: NOTIONS ET GRANDEURS ELECTROMAGNETIQUES
SECTION 121-11: ELECTROMAGNETIC CONCEPTS AND QUANTITIES
Remplacer l’article 121-11-06 par le suivant:
Replace the entry 121-11-06 by the following:
121-11-06
quasi-infinitésimal, adj
pour un système d’entités élémentaires réparties dans l'espace, qualifie la longueur, l’aire ou
le volume d’un élément d’espace, dont toutes les dimensions géométriques sont petites par
rapport à celles du système considéré mais suffisamment grandes pour que l’élément
d’espace contienne un grand nombre d’entités élémentaires; qualifie aussi une grandeur
extensive définie comme une somme étendue à toutes les entités élémentaires contenues
dans un tel élément d’espace
NOTE 1 Les entités élémentaires peuvent être, par exemple, des particules élémentaires, des molécules, des
ions, des porteurs de charge, ou des entités macroscopiques telles que des particules solides ou des gouttelettes.
NOTE 2 Une grandeur extensive, telle que la masse, la charge électrique ou la résistance, est additive pour des
parties disjointes d’un système. Une grandeur intensive, telle que la masse volumique, la charge électrique
volumique ou la résistivité, peut être déterminée en tout point d’un système. Voir la CEI 60050-112 (en
préparation).
NOTE 3 Le concept peut être utilisé pour définir des grandeurs intensives par le quotient de deux grandeurs
quasi-infinitésimales relatives au même élément d’espace. Des exemples sont la charge électrique volumique
[121-11-07] et la densité de courant électrique [121-11-11].
NOTE 4 Le terme « quasi-infinitésimal » est utilisé pour distinguer cette notion de celle d’infinitésimal au sens
mathématique.
quasi-infinitesimal, adj
for a system of elementary entities distributed in space, qualifies the length, the area, or the
volume of an element of space, all the geometrical dimensions of which are small compared
with those of the system under consideration but sufficiently large for the element of space to
contain a large number of elementary entities; qualifies also an extensive quantity when
summed for all elementary entities within such an element of space
NOTE 1 The elementary entities can be, for example, elementary particles, molecules, ions, charge carriers, or
macroscopic entities such as solid particles or droplets.
NOTE 2 An extensive quantity, such as mass, electric charge, or resistance, is additive for disjointed parts of a
system. An intensive quantity, such as mass density, electric charge density, or resistivity, is determinable at any
point of a system. See IEC 60050-112 (in preparation).
NOTE 3 The concept can be used to define intensive quantities by the quotient of two quasi-infinitesimal
quantities related to the same element of space. Examples are volumic electric charge [121-11-07] and electric
current density [121-11-11].
NOTE 4 The term "quasi-infinitesimal" is used to distinguish this concept from that of infinitesimal in the
mathematical sense.
de quasi-infinitesimal, adj.
es cuasi-infinitesimal
ja 擬似無限小
pl kwazi infinitezymalny
pt quase-infinitesimal
sv .
– 4 – 60050-121 Amend. 2 © CEI 2008
Remplacer les articles 121-11-28 à 121-11-30 par les suivants:
Replace the entries 121-11-28 to 121-11-30 by the following:
121-11-28
symb.: U
i
tension induite, f
grandeur scalaire égale à la circulation d’une grandeur vectorielle le long d’un chemin C
reliant le point a au point b, dans lequel des porteurs de charge peuvent se déplacer:
r
b
⎛ ∂A ⎞
U = ⎜ − +v ×B⎟ ⋅ dr
i
⎜ ⎟
∫
∂t
⎝ ⎠
r (C)
a
où A et B sont respectivement un potentiel vecteur magnétique et l’induction magnétique en
un point du chemin, v est la vitesse de déplacement de ce point, r est le vecteur de position
et t est le temps
NOTE La tension induite est égale à la dérivée par rapport au temps du flux totalisé correspondant au chemin,
avec les signes positif ou négatif selon la convention exposée dans la CEI 60375.
induced voltage
induced tension
scalar quantity equal to the line integral of a vector quantity along a path C from point a to
point b in which charge carriers can be displaced:
r
b
⎛ ∂A ⎞
U = ⎜ − +v ×B⎟ ⋅ dr
i
⎜
∫ ⎟
∂t
⎝ ⎠
r (C)
a
where A and B are respectively a magnetic vector potential and the magnetic flux density at a
point of the path, v is the velocity with which that point is moving, r is position vector, and t is
time
NOTE The induced voltage is equal to the time derivative of the linked flux corresponding to the path, with the
positive or negative signs according to the convention in IEC 60375.
de induzierte Spannung, f
es tensión inducida
ja 誘導電圧
pl napięcie indukowane
pt tensão induzida
sv .
121-11-29
courant induit, m
courant électrique dû au déplacement de porteurs de charge sous l’effet d’une tension induite
induced current
electric current resulting from the displacement of charge carriers due to an induced voltage
de induzierter Strom, m
es corriente inducida
ja 誘導電流
pl prąd indukowany
corrente induzida
pt
sv .
60050-121 Amend. 2 © CEI 2008 – 5 –
121-11-30
induction électromagnétique, f
phénomène selon lequel une tension induite ou un courant induit est produit
electromagnetic induction
phenomenon in which an induced voltage or an induced current is produced
de elektromagnetische Induktion, f
es inducción electromagnética
ja 電磁誘導
pl indukcja elektromagnetyczna
pt indução electromagnética
sv .
– 6 – 60050-121 Amend. 2 © CEI 2008
SECTION 121-12: PROPRIETES ELECTROMAGNETIQUES DES MATERIAUX
SECTION 121-12: ELECTROMAGNETIC PROPERTIES OF MATERIALS
Remplacer l’article 121-12-51 par le suivant:
Replace the entry 121-12-51 by the following:
121-12-51
température de Curie (pour un matériau magnétique), f
point de Curie, m (terme déconseillé)
température au-dessous de laquelle une substance magnétique est ferromagnétique ou
ferrimagnétique et au-dessus de laquelle elle est paramagnétique
NOTE Le terme « température
...










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