TS 2138
Letter Symbols To Be Used In Electrical Technology Part I: General
This standard gives information about general quantities, units and their letter symbols and mathematical symbols that are to be used in electrical technology. Also gives rules for writing and printing these symbols and for the use of additional marks (subscripts, superscripts, etc.) with symbols for quantities.
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About This Item
TS 2138 is a general standard for letter symbols used in electrical technology and the rules for presenting them. It helps keep quantities, units, and related mathematical notation consistent across technical drawings, calculations, tables, and documentation, reducing ambiguity in engineering communication.
Letter symbols and notation discipline
The standard addresses general quantities together with their letter symbols and mathematical symbols, and it sets out rules for writing and printing those symbols, including the use of additional marks such as subscripts and superscripts. In general technical practice, this kind of notation framework supports clear and compact expression of electrical quantities such as current, voltage, power, and resistance, while helping different documents use the same symbol in the same way.
Why this matters in electrical engineering
In electrical technology, symbols are part of the language of design and analysis, not just a matter of style. Consistent notation improves readability in schematics, calculation sheets, specification documents, labels, and teaching material. This standard focuses on the common symbolic language used in electrical technology as a whole; it does not present a device-specific scheme, but rather a general framework for expressing electrical quantities in a controlled and familiar way.
- General letter symbols for electrical quantities
- Use of units and mathematical symbols
- Rules for writing and printing symbols
- Additional marks such as subscripts and superscripts
- Publication Date: 26.11.1975
- Standard Status: H (İptal Edilmiş Standard/Withdrawn standard)
- Publisher: TSE
- Document Language: tr
- ICS Classification: 01.080.20 Özel Ekipmanlarda Kullanılan Grafik Semboller ; 29.020 Elektrik Mühendisliği (Genel)
- Pages: 16
- Source Standard: IEC 27-1 (1971)
- International Equivalents: IEC 27-1 (1971)--; IEC 27-1:1971 EQV--
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