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Independent Electrical Contractors (IEC) is a non-profit trade organization for merit shop electrical and systems contractors. It is based in Arlington, Virginia. [ 1 ] IEC is a member of the U.S. Occupational Safety and Health Administration (OSHA) Alliance program.
IEC 60461 Time and control code; IEC 60462 Nuclear instrumentation – Photomultiplier tubes for scintillation counting – Test procedures; IEC 60464 Varnishes used for electrical insulation; IEC 60465 Specification for unused insulating mineral oils for cables with oil ducts; IEC 60468 Method of measurement of resistivity of metallic materials
The IEC is made up of members, called national committees, and each NC represents its nation's electrotechnical interests in the IEC. This includes manufacturers, providers, distributors and vendors, consumers and users, all levels of governmental agencies, professional societies and trade associations as well as standards developers from ...
By 1914, the IEC had issued a first list of terms and definitions covering electrical machinery and apparatus, a list of international letter symbols for quantities and signs for names of units, a list of definitions in connection with hydraulic turbines, and a number of definitions and recommendations relating to rotating machines and ...
IEC 113 (Superseded by IEC 750, i.e. IEC 60750.) IEC 750-1983 (AS 3702 is equivalent, but provides extra information.) IEEE 315-1975 / ANSI Standard Y32.2. Annex F: "Cross reference list of Class Designation Letters" compares IEC 113-2:1971 to the IEEE/ANSI standard. * AS 1102 and IEC 60617 for "Graphical Symbols for Electrotechnology".
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Coding-independent code points (CICP) is a way to signal the properties of a video or audio stream. [1] [2] It can describe the color profile of videos (and still images) in a simpler way than the use of ICC profiles. [3] It is defined in both ITU-T H.273 and ISO/IEC 23091-2. [1]
The vector group provides a simple way of indicating how the connections of a transformer are arranged. In the system adopted by the IEC, the vector group is indicated by a code consisting of two or three letters, followed by one or two numeric digits. The letters indicate the winding configuration as follows: