ISO/IEC TR 20821:2018 pdf free download – Information technology – Learning, education and training一Learning environment components for automated contents adaptation
ISO-IEC-TR-20821:2018 pdf free download – Information technology – Learning, education and training一Learning environment components for automated contents adaptation. 4.1.2 Hardware platform (HardwarePlatform) A set of hardware attributes related to the users’ devices. Devices use various hardware and support various functions. To accommodate such variety, Hardware...
ISO/IEC TR 15044:2000 pdf free download – Information technology – Terminology for the Home Electronic System (HES)
ISO/IEC TR 15044:2000 pdf free download – Information technology – Terminology for the Home Electronic System (HES). 2.20 HES device application process that part of a device application process that is accessible through the HES communication network. An HES device application process is built up...
IEC TS 63209-1:2021 pdf free download – Photovoltaic modules – Extended-stress testing – Part 1: Modules
IEC TS 63209-1:2021 pdf free download – Photovoltaic modules – Extended-stress testing – Part 1: Modules. 5.7 Wet leakage current The wet leakage current shall be measured as defined in IEC 61215-2, MQT 15. The measured leakage current shall be recorded and reported in the...
IEC TS 62098:2000 pdf free download – Evaluation methods for microprocessor- based instruments
IEC-TS-62098:2000 pdf free download – Evaluation methods for microprocessor- based instruments. 3.3 Boundary area (interfaces) In setting up an evaluation, the definition of the boundaries of an instrument is an important issue. At the periphery of a system, the boundaries need to be clearly defined....
IEC TS 62033:2000 pdf free download – Attenuation uniformity in optical fibres
IEC-TS-62033:2000 pdf free download – Attenuation uniformity in optical fibres. The attenuation coefficient of optical fibre and cable is measured over the entire length. It can vary locally within an overall length. When a length is cut into subsections, the attenuation coefficient of a subsection...
IEC TR 62914:2014 pdf free download – Secondary cells and batteries containing alkaline or other non-acid electrolytes – Experimental procedure for the forced internal short-circuit test of IEC 62133:2012
IEC-TR-62914:2014 pdf free download – Secondary cells and batteries containing alkaline or other non-acid electrolytes – Experimental procedure for the forced internal short-circuit test of IEC 62133:2012. b) Be careful not to short-circuit cells during disassembling. For example, use tools whose edges are made of...
IEC TR 62349:2014 pdf free download – Guidance of measurement methods and test procedures – Basic tests for polarization-maintaining optical fibres
IEC-TR-62349:2014 pdf free download – Guidance of measurement methods and test procedures – Basic tests for polarization-maintaining optical fibres. 5.3 Reference test method Method B is the reference test method (RTM), which is the one used to settle disputes. 6 Guidance for cut-off wavelength measurement...
IEC TR 62048:2014 pdf free download – Optical fibres – Reliability – Power law theory
IEC-TR-62048:2014 pdf free download – Optical fibres – Reliability – Power law theory. 4 General approach First, the equivalence of the growth of an individual crack and its associated weakening is shown. This is related to applied stress or strain as an arbitrary function of...
IEC TR 61010-3:2003 pdf free download – Safety requirements for electrical equipment for measurement, control, and laboratory use – Part 3: Protocol for the preparation of conformity verification reports for the IEC 61010 2nd edition series
IEC-TR-61010-3:2003 pdf free download – Safety requirements for electrical equipment for measurement, control, and laboratory use – Part 3: Protocol for the preparation of conformity verification reports for the IEC 61010 2nd edition series. e) IEC 61010-3-081 for IEC 61010-2-081 (standard in preparation) f) IEC...
IEC TR 60909-4:2021 pdf free download – Short-circuit currents in three-phase AC systems – Part 4: Examples for the calculation of short-circuit currents
IEC-TR-60909-4:2021 pdf free download – Short-circuit currents in three-phase AC systems – Part 4: Examples for the calculation of short-circuit currents. If the magnetic coupling between the three coils without or with iron core is small, the zero- sequence impedance (O) is approximately equal to...