IEC 62007-1 pdf download
IEC 62007-1 pdf download Semiconductor optoelectronic devices for fibre optic system applications – Part 1: Specification template for essential ratings and characteristics 1 Scope and object This part of lEC 62007 is a specification template for essential ratings and characteristics ofthe following categories of semiconductor optoelectronic devices to be used in the field of fibreoptic systems and subsystems: semiconductor photoemitters;...
IEC 62007-2 pdf download
IEC 62007-2 pdf download Semiconductor optoelectronic devices for fibre optic system applications – Part 2: Measuring methods 1 scope This part of lEC 62007 describes the measuring methods applicable to the semiconductoroptoelectronic devices to be used in the field of fibre optic digital communication systems andsubsystems. All optical fibres and cables that are defined in IEC 60793 series,IEC 60794 series...
IEC 62058-21 pdf download
IEC 62058-21 pdf download Electricity metering equipment (AC) – Acceptance inspection – Part 21: Particular requirements for electromechanical meters for active energy (classes 0,5, 1 and 2) 1 Scope This part of IEC 62058 specifies particular requirements for acceptance inspection of newly manufactured direct connected or transformer operated electromechanical meters for active energy (classes 0,5, 1 and 2) delivered in...
IEC 62074-1 pdf download
IEC 62074-1 pdf download Fibre optic interconnecting devices and passive components – Fibre optic WDM devices – Part 1: Generic specification scope This part of lEC 62074 applies to fibre optic wavelength division multiplexing (WDM) devices.These have all of the following general features: They are passive, in that they contain no optoelectronic or other transducing elements; but they may use...
IEC 62317-14 pdf download
IEC 62317-14 pdf download Ferrite cores – Dimensions – Part 14: EFD-cores for use in power supply applications 1 scope This part of lEC 62317 specifies the dimensions that are of importance for mechanicalinterchangeability for a preferred range of EFD-cores, the essential dimensions of coil formers tobe used with them , and the effective parameter values to be used in...
IEC 62363 pdf download
IEC 62363 pdf download Radiation protection instrumentation – Portable photon contamination meters and monitors 1 Scope and object This International Standard is applicable to portable and transportable contamination metersand monitors designed for the direct measurement or the direct detection of surfacecontamination by photon radiation emitting radionuclides and which comprise at least: – a detection assembly (comprising counter tube，scintillation detector or...
IEC 62419 pdf download
IEC 62419 pdf download Control technology – Rules for the designation of measuring instruments For the purposes of this document, the following terms and definitions apply. 3.1 measuring instrument device intended to be used to make measurements,alone or in conjunction withsupplementary devices [IEv 311-03-01] [ISO/IEC Guide 99,3.1] NOTE 1 Material measures are also measuring instruments. NOTE 2 An instrument is...
IEC 62420 pdf download
IEC 62420 pdf download Concentric lay stranded overhead electrical conductors containing one or more gap(s) The surface of the conductor shall be free from all imperfections visible to the unaided eye (normal corrective lenses accepted), such as nicks, indentations, etc., not consistent with good commercial practice. 5.4 Stranding 5.4.1 General All wires of the conductor shall be concentrically stranded. Before...
IEC 62428 pdf download
IEC 62428 pdf download Electric power engineering – Modal components in three-phase a.c. systems – Quantities and transformations 1 Scope This International Standard deals with transformations from original quantities into modal quantities for the widely used three-phase a.c. systems in the field of electric power engineering. The examination of operating conditions and transient phenomena in three-phase a.c. systems becomes more...
IEC 62431 pdf download
IEC 62431 pdf download Reflectivity of electromagnetic wave absorbers in millimetre wave frequency – Measurement methods 1 Scope This lInternational Standard specifies the measurement methods for the reflectivity ofelectromagnetic wave absorbers(EMA) for the normal incident, oblique incident and eachpolarized wave in the millimetre-wave range. In addition, these methods are also equallyeffective for the reflectivity measurement of other materials: measurement frequency...