IEVref: 151-15-01 ID: Language: en Status: Standard Term: AC, qualifier Synonym1: Synonym2: Synonym3: Symbol: Definition: pertaining to alternating electric quantities such as voltage or current, to devices operated with these, or to quantities associated with these devices NOTE 1 – The notation "AC" is preferred in English to the notation "a.c." which is an abbreviation of "alternating current" (see IEC 60050-131). NOTE 2 – French language uses also the expression "courant alternatif" with an appropriate preposition such as "en", "de", "à" or "pour", or only the adjective "alternatif". NOTE 3 – For the marking of electric equipment, either the notation AC (see IEC 61293) or the graphical symbol ~ (see IEC 60417 item 5032) may be used. Example: AC 500 V or ~ 500 V. NOTE 4 – According to ISO 31-0 and IEC 60027-1, unit names and unit symbols shall not be qualified by "AC" as an attachment. Example: UAC = 500 V is correct, U = 500 VAC or U = 500 V AC are incorrect. Publication date: 2001-07 Source: Replaces: Internal notes: 2011-09-16: Corrected by. JGO CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: