IEC 61837-3 pdf download
IEC 61837-3 pdf download Surface mounted piezoelectric devices for frequency control and selection – Standard outlines and terminal lead connections – Part 3: Metal enclosures 1 Scope This part of IEC 61 837 deals with standard outlines and terminal lead connections as they apply to SMDs for frequency control and selection in metal enclosures and is based on IEC 61...
IEC 61839 pdf download
IEC 61839 pdf download Nuclear power plants – Design of control rooms – Functional analysis and assignment 1 Scope and object This International Standard specifies functional analysis and assignment procedures (FAand A, sometimes called allocation of functions) for the design of the control-room system fornuclear power plants and gives rules for developing criteria for the assignment of functions. This standard...
IEC 61860 pdf download
IEC 61860 pdf download Dimensions of low-profile cores made of magnetic oxides 1Scope This International Standard specifies the dimensions that are of importance for mechanicalinterchangeability of a preferred range of low-profile cores made of magnetic oxides and theeffective parameter values to be used in calculations involving these cores. The general considerations upon which the design of this range of cores...
IEC 61865 pdf download
IEC 61865 pdf download Overhead lines – Calculation of the electrical component of distance between live parts and obstacles – Method of calculation 1 Scope This International Standard provides guidance for the calculation of electrical distances between live and earthed parts required to prevent air-gap breakdown which may endanger members of the public who legitimately come close to live parts....
IEC 61883-7 pdf download
IEC 61883-7 pdf download Consumer audio/video equipment – Digital interface – Part 7: Transmission of ITU-R BO.1294 System B 1 scope This specification defines packetization and transmission for transport streams of lTU-R B0.1294system B (DirecTV system/Dss) over the lEEE 1394 Serial Bus. 2Normative references The following referenced documents are indispensable for the application of this document.For dated references, only the...
IEC 61921 pdf download
IEC 61921 pdf download Power capacitors – Low-voltage power factor correction banks 1 Scope This International Standard is applicable to low-voltage a.c. capacitor banks intended to beused for power factor correction purposes, equipped with a built-in switchgear and controlgearapparatus capable of connecting to or disconnecting from the mains part(s) of the bank withthe aim to correct its power factor. Low-voltage...
IEC 61937-4 pdf download
IEC 61937-4 pdf download Digital audio – Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 4: Non-linear PCM bitstreams according to the MPEG audio format 1 Scope This part of IEC 61 937 specifies the method for the digital audio interface specified in IEC 60958 to convey non-linear PCM bitstreams encoded in accordance with the MPEG audio....
IEC 61947-2 pdf download
IEC 61947-2 pdf download Electronic projection – Measurement and documentation of key performance criteria – Part 2: Variable resolution projectors 1 Scope This part of lEC 61947 specifies requirements for measuring and documenting keyperformance parameters for CRT and laser-based projectors and other variable resolutionprojectors that are capable of multiple variable resolutions and in which the image is raster-scanned. The provisions...
IEC 61958 pdf download
IEC 61958 pdf download High-voltage prefabricated switchgear and controlgear assemblies – Voltage presence indicating systems This International Standard is applicable to voltage presence indicating systems (VPIS) incor-porated in a.c. switchgear and controlgear covered by lEC 60298 or lEC 60466. Voltage presence indicating systems are devices used to provide information to operatorsabout the voltage condition of the main circuit of the...
IEC 61966-3 pdf download
IEC 61966-3 pdf download Multimedia systems and equipment – Colour measurement and management – Part 3: Equipment using cathode ray tubes This part of lEC 61966 deals with equipment using cathode ray tubes (CRT) to display colourimages for use in multimedia applications. A series of methods and parameters for colour measurements and management for use inmultimedia systems and equipment is...