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IEC 60050-447
Edition 2.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
International Electrotechnical Vocabulary (IEV) –
Part 447: Measuring relays and protection equipment
Vocabulaire Electrotechnique International (IEV) –
Partie 447: Relais de mesure et dispositifs de protection
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IEC 60050-447
Edition 2.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
HORIZONTAL STANDARD
NORME HORIZONTALE
International Electrotechnical Vocabulary (IEV) –
Part 447: Measuring relays and protection equipment
Vocabulaire Electrotechnique International (IEV) –
Partie 447: Relais de mesure et dispositifs de protection
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 01.040.29; 29.120.70 ISBN 978-2-8322-7246-6
– II – IEC 60050-447:2020 © IEC 2020
CONTENTS
FOREWORD . IV
INTRODUCTION . VIII
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
Section 447-01 – Terms relating to types . 3
Section 447-02 – Terms relating to conditions. 25
Section 447-03 – Terms relating to energization . 71
Section 447-04 – Terms relating to output circuits . 81
Section 447-05 – Terms relating to times . 91
Section 447-06 – Terms relating to influence quantities . 107
Section 447-07 – Terms relating to characteristics . 110
Section 447-08 – Terms relating to accuracy . 125
INDEX . 133
SOMMAIRE
AVANT-PROPOS . VI
INTRODUCTION . XI
1 Domaine d'application . 2
2 Références normatives . 2
3 Termes et définitions . 2
Section 447-01 – Termes relatifs aux types . 3
Section 447-02 – Termes relatifs aux états . 25
Section 447-03 – Termes relatifs à l'alimentation . 71
Section 447-04 – Termes relatifs aux circuits de sortie . 81
Section 447-05 – Termes relatifs aux temps . 91
Section 447-06 – Termes relatifs aux grandeurs d'influence . 107
Section 447-07 – Termes relatifs aux caractéristiques . 110
Section 447-08 – Termes relatifs à la précision . 125
INDEX . 133
– IV – IEC 60050-447:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_______________
INTERNATIONAL ELECTROTECHNICAL VOCABULARY (IEV) –
Part 447: Measuring relays and protection equipment
FOREWORD
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International Standard IEC 60050-447 has been prepared by IEC technical committee 95:
Measuring relays and protection equipment, under the responsibility of IEC technical
committee 1: Terminology.
This second edition cancels and replaces the first edition published in 2010. It constitutes a
technical revision. It has the status of a horizontal standard in accordance with IEC Guide
108.
This edition includes the following significant technical changes with respect to the previous
edition:
a) clarification of some existing definitions;
b) addition of some definitions to meet the requirements of IEC 60255-1xx functional
standards, in particular, functional standards dealing with distance protection, differential
protection and frequency protection.
The text of this standard is based on the following documents:
FDIS Report on voting
1/2401/FDIS 1/2408/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this part of the IEV, the terms and definitions are provided in French and English; in
addition the terms are given in Arabic (ar), German (de), Japanese (ja), Korean (ko), Polish
(pl), Portuguese (pt) and Chinese (zh).
A list of all parts of the IEC 60050 series, published under the general title International
Electrotechnical Vocabulary,
...