EN 60027-1:2006

Letter symbols to be used in electrical technology - Part 1: General

The contents of the corrigendum of April 1993 have been included in this copy.

Formelzeichen für die Elektrotechnik - Teil 1: Allgemeines

Symboles littéraux à utiliser en électrotechnique - Partie 1: Généralités

Le contenu du corrigendum d'avril 1993 a été pris en considération dans cet exemplaire.

Črkovni simboli za električno tehnologijo - 1. del: Splošno (IEC 60027-1:1995 (Reprint) + A1:1997)

General Information

• Status: Published
• Publication Date: 11-Oct-2006
• ICS: 01.060 - Quantities and units
• Technical Committee: CLC/SR 25 - Quantities and units, and their letter symbols
• Drafting Committee: IEC/TC 25 - IEC_TC_25
• Parallel Committee: IEC/TC 25 - IEC_TC_25
• Current Stage: 6060 - Document made available - Publishing
• Due Date: 12-Oct-2006
• Completion Date: 12-Oct-2006
• Ref Project: SIST EN 60027-1:2007 - Letter symbols to be used in electrical technology -- Part 1: General

Relations

• Replaces: HD 60027-1:2004 - Letter symbols to be used in electrical technology - Part 1: General
• Effective Date: 06-May-2014

Overview

EN 60027-1:2006 (identical to IEC 60027-1:1995 + A1:1997) is the European standard that defines the letter symbols to be used in electrical technology - Part 1: General. Published by CENELEC and incorporating the April 1993 corrigendum, this document harmonizes symbols, quantity names and associated SI units for use in technical documents, drawings, specifications and standards across Europe.

Key topics

• Standardized letter symbols for electrical quantities (e.g., form factor F, phase ϑ, initial phase).
• Quantities and SI units: tables mapping quantities to SI units and other commonly used unit designations.
• Amendments and table updates (Amendment 1) introducing and clarifying items such as:
  • Lineic (electric) charge (τλ, Q/s)
  • Displacement current and total current (I, ID, Itot)
  • Current density and total current density (J, JD, Jtot)
  • Magnetic field strength H, scalar magnetic induction ϕm (B-related), scalar magnetic potential Vm
  • Coercivity-related quantities (cB, cM, cJ)
• Notation rules and remarks, for example the use (and removal in some items) of subscripts such as “N” for rated values and a note on subscript usage in rotating machinery.
• Scope and harmonization: confirms the European adoption without modification and the obligation for CENELEC members to implement the standard nationally.

Practical applications

EN 60027-1 provides a consistent reference for:

• Creating clear technical documentation, schematics, datasheets and engineering reports.
• Ensuring uniform symbol usage in standards, test procedures, academic publications and regulatory documents.
• Assisting measurement, simulation and design workflows where consistent naming of electrical quantities and units is critical.
• Supporting interdisciplinary communication among electrical engineers, metrologists, technical writers and standards committees.

Who uses this standard

• Electrical and electronic engineers
• Standards committees (CENELEC/IEC) and national standards bodies
• Technical authors and editors preparing specifications, manuals and datasheets
• Test laboratories, certification bodies and educators

Related standards

• IEC 60027 series (other parts covering specific fields and additional symbol rules)
• National adoptions and related CENELEC documents (e.g., HD 60027 series)

Keywords: EN 60027-1, IEC 60027-1, letter symbols, electrical technology, SI units, electrical quantities, CENELEC, symbol standard, technical documentation, electrical engineers.

Standards Content (Sample)

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/HWWHUV\PEROVWREHXVHGLQHOHFWULFDOWHFKQRORJ\3DUW*HQHUDO,(&
5HSULQW$
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EUROPEAN STANDARD
EN 60027-1
NORME EUROPÉENNE
October 2006
EUROPÄISCHE NORM
ICS 01.060 Supersedes HD 60027-1:2004

English version
Letter symbols to be used in electrical technology
Part 1: General
(IEC 60027-1:1995 (Reprint) + A1:1997)

Symboles littéraux à utiliser en Formelzeichen für die Elektrotechnik
électrotechnique Teil 1: Allgemeines
Partie 1: Généralités (IEC 60027-1:1995 (Reprint) + A1:1997)
(CEI 60027-1:1995 (Reprint) + A1:1997)

This European Standard was approved by CENELEC on 2006-10-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60027-1:2006 E
Foreword
The text of the International Standard IEC 60027-1:1995 (Reprint) + A1:1997, prepared by IEC TC 25,
Quantities and units, and their letter symbols, was approved by CENELEC as HD 60027-1:2004 on
2003-12-01.
Following BT Decision D125/089, this Harmonization Document was submitted to the formal vote for
conversion into a European Standard and was approved by CENELEC as EN 60027-1 on 2006-10-01.
The following date was fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-10-01
__________
Endorsement notice
The text of the International Standard IEC 60027-1:1995 (Reprint) + A1:1997 was approved by
CENELEC as a European Standard without any modification.
__________
NORME
CEI
INTERNATIONALE
IEC
60027-1
INTERNATIO
...