Moldova standards PDF

Components for low-voltage surge protective devices - Part 351- Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT). IEC 61643-351:2016-10(en-fr). Original standard IEC 61643-351-2016 in PDF full version. Additional info + preview on request

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Components for low-voltage surge protection - Part 352- Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs). IEC 61643-352:2018-01(en-fr). Original standard IEC 61643-352-2018 in PDF full version. Additional info + preview on request

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Low-voltage surge protective devices - Part 41- Surge protective devices connected to DC low-voltage power systems - Requirements and test methods. IEC 61643-41:2025-05. Original standard IEC 61643-41-2025 in PDF full version. Additional info + preview on request

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Weibull analysis. IEC 61649:2008. Original standard IEC 61649-2008 in PDF full version. Additional info + preview on request

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Reliability data analysis techniques - Procedures for comparison of two constant failure rates and two constant failure (event) intensities. IEC 61650:1997. Original standard IEC 61650-1997 in PDF full version. Additional info + preview on request

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Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 1- Calculation of short-circuit currents. IEC 61660-1:1997. Original standard IEC 61660-1-1997 in PDF full version. Additional info + preview on request

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