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IEVref:151-15-02ID:
Language:enStatus: Standard
Term: DC, qualifier
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Definition: pertaining to time-independent electric quantities such as voltage or current, to devices operated with direct voltage and current, or to quantities associated with these devices

NOTE 1 – The notation "DC" is preferred in English to the notation "d.c." which is an abbreviation of "direct current".

NOTE 2 – French language uses also the expression "courant continu" with an appropriate preposition such as "en", "de", "" or "pour", or only the adjective "continu".

NOTE 3 – For the marking of electric equipment, either the notation DC or the appropriate graphical symbol may be used. Example: DC 500 V.

NOTE 4 – According to ISO 31-0 and IEC 60027-1, unit names and unit symbols shall not be qualified by "DC" as an attachment. Example: UDC = 500 V is correct, U = 500 VDC or U = 500 V DC are incorrect.


Publication date:2001-07
Source:see IEC 60050-131, IEC 61293, IEC 60417 item 5031
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