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Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 3- Examples of calculations. Original standard IEC TR 61660-3-2000 in PDF full version. Additional info + preview on request

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Assessment of the risk of damage due to lightning. Original standard IEC TR 61662-1995 in PDF full version. Additional info + preview on request

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Application of symbols for binary logic and analogue elements. Original standard IEC TR 61734-2006 in PDF full version. Additional info + preview on request

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Surface mounting technology - Part 3-1- Standard method for the specification of components for through hole reflow (THR) soldering - Guidelines for through hole diameter design with solder paste surface printing method. IEC TR 61760-3-1:2022-06(en). Original standard IEC TR 61760-3-1-2022 in PDF full version. Additional info + preview on request

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Surface mounting technology - Part 5-1- Surface strain on circuit boards - Strain gauge measurement applied to chip components. IEC TR 61760-5-1:2024-01(en). Original standard IEC TR 61760-5-1-2024 in PDF full version. Additional info + preview on request

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Overhead lines - Meteorological data for assessing climatic loads. IEC 61774:1997. Original standard IEC TR 61774-1997 in PDF full version. Additional info + preview on request

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