EN 60027-1:2006/A2:2007

Overview

EN 60027-1:2006/A2:2007 is a critical European standard published by CENELEC that specifies the letter symbols to be used in electrical technology, Part 1: General. This amendment (A2) updates and aligns the standard with the IEC 60027-1:1995/A2:2005 international publication, ensuring harmonization across European electrotechnical documentation.

This standard provides clear guidance on the use of consistent and internationally recognized letter symbols for electrical quantities and units. It supports the uniformity of technical communication in the electrical engineering field, which is essential for design, manufacturing, research, education, and documentation.

Key Topics

• Letter Symbols in Electrical Technology
  Establishes the standardized alphabetic letters used to represent electrical quantities, aiding clarity in formulas, technical drawings, and documentation.

• Decimal Sign Usage
  Defines the decimal marker as either a point or a comma on the line, following Resolution 10 of the 22nd General Conference on Weights and Measures (CGPM, 2003).

  • In International Standards, the decimal sign is preferably a comma on the line.
  • A zero must precede the decimal sign if the absolute value is less than one (e.g., 0.5 or 0,5).

• Harmonization with IEC 60027-1
  Amends the original European version to maintain consistency with the IEC standard, reflecting international consensus on electrotechnical notation.

• Official Language Versions
  Available in English, French, and German, with national translations authorized under identical terms.

Applications

EN 60027-1:2006/A2:2007 is indispensable for professionals and organizations involved in:

• Electrical Engineering Design and Development
  Ensures the correct and consistent use of symbols in electrical schematics, technical specifications, and product documentation.

• Technical Standards and Regulatory Compliance
  Forms the basis for compliance to European and international electrotechnical norms affecting product labeling and information exchange.

• Education and Training
  Used as a foundational reference for teaching correct notation practices in electrical technology courses.

• Research and Innovation
  Provides a common language for scientific papers, patents, and research documents involving electrical quantities.

Related Standards

• IEC 60027 Series
  The international family of standards on letter symbols for electrical quantities and units. Part 1 covers general principles.

• CENELEC Internal Regulations
  Governs the adoption and implementation of European Standards and amendments by national electrotechnical committees.

• International System of Units (SI)
  EN 60027-1 facilitates consistent integration with SI units and symbols used globally.

• ISO/IEC Directives, Part 2
  Provides rules on the drafting and structure of International Standards, including symbol notation guidelines.

Keywords: EN 60027-1, electrical technology standard, letter symbols, electrotechnical notation, decimal sign, IEC 60027-1 amendment, CENELEC standards, electrical engineering symbols, technical documentation, IEC TC 25.