IEC 60050-904-2014 pdf free.International Electrotechnical Vocabulary – Part 904: Environmental standardization for electrical and electronic products and systems.
The 1EV (IEC 60050 series) is a general purpose multilingual vocabulary covering the field of electrotechnology. electronics and telecommunication (available at www.electropedia.org). It comprises about 20 000 terminological entries, each corresponding to a concept. These entries are distributed among about 80 parts, each part corresponding to a given field.
EXAMPLE
Part 161 (IEC 60050-161): Electromagnetic compatibility
Part 411 (lEG 60050-411): Rotating machines
The entries follow a hierarchical classification scheme Part/Section/Concept; within the sections, the concepts are organized in a systematic order.
The terms and definitions (and possibly non-verbal representations. examples, notes to entry and sources) in the entries are given in two or more of the three IEC languages. that is French, English and Russian (principal 1EV languages).
In each entry, the terms alone are also given in several of the additional 1EV languages
(Arabic (ar). Czech (Cs), German (de), Spanish (es). Finnish (fi), Italian (it), Japanese (ja).
Norwegian (no), Polish (p1), Portuguese (pt), Slovenian (sI), Serbian (sr), Swedish (sv) and
Chinese (zh)J.
Organization of a terminological entry
Each of the entries corresponds to a concept, and comprises:
– an entry number.
– possibly a letter symbol for the quantity or unit, then, for the principal 1EV languages present in the part:
– the term designating the concept, called “preferred term’, possibly accompanied by synonyms and abbreviations,
– the definition of the concept,
– possibly non-verbal representations, examples and notes to entry.
– possibly the source,
and finally, for the additional 1EV languages, the terms alone. Entry number
The entry number is comprised of three elements, separated by hyphens:
Part number: 3 digits,
Section number: 2 digits,
Letter symbols for quantities and units
These symbols, which are language independent, are given on a separate line following the entry number.
EXAM PLE 131-12-04 R resistance
Preferred term and synonyms
The preferred term is the term that heads a terminological entry in a given language; it may be followed by synonyms. It is printed in boldface.
Synonyms:
The synonyms are printed on separate lines under the preferred term: preferred synonyms are printed in boldface, and deprecated synonyms are printed in lightface. Deprecated synonyms are prefixed by the text DEPRECATED:.IEC 60050-904 pdf download.