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Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems. IEC 61557-9:2014-12(en-fr). Original standard IEC 61557-9-2014 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61557-9-2023

Safety of power transformers, power supplies, reactors and similar products - Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications. CEI/IEC 61558-2-1:2007. Original standard IEC 61558-2-1-2007 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61558-2-1-2021

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-10: Particular requirements and tests for separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V. IEC 61558-2-10:2014-04(en-fr). Original standard IEC 61558-2-10-2014 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61558-2-10-2024

Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage. IEC 61558-2-12:2011. Original standard IEC 61558-2-12-2011 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61558-2-12-2024

Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers. IEC 61558-2-13:2009. Original standard IEC 61558-2-13-2009 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61558-2-13-2022

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-14: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers. IEC 61558-2-14:2012. Original standard IEC 61558-2-14-2012 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61558-2-14-2022