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IEC 60974-13:2021 pdf download - Arc welding equipment – Part 13: Welding current return clamp. 1 Scope This part of IEC 60974 is applicable to WELDING CURRENT RETURN CLAMPS for arc welding processes, designed to make an...

IEC 61800-1:2021 pdf download - Adjustable speed electrical power drive systems – Part 1: General requirements – Rating specifications for low voltage adjustable speed DC power drive systems. 1 Scope This part of IEC 61 800 applies...

IEC 61784-3:2021 pdf download - Industrial communication networks – Profiles – Part 3: Functional safety fieldbuses – General rules and profile definitions. 1 Scope This part of the IEC 61 784-3 series explains some common principles that...

IEC 61869-13:2021 pdf download - Instrument transformers – Part 13: Stand-alone merging unit (SAMU). 5.5 Rated output Subclause 5.5 of IEC 61 869-6:201 6 and of IEC 61 869-1 :2007 is not applicable. 5.6 Rated accuracy class...

IEC 60974-8:2021 pdf download - Arc welding equipment – Part 8: Gas consoles for welding and plasma cutting systems. 4 Environmental conditions As specified in Clause 4 of IEC 60974-1 :201 7. 5 Tests 5.1 Test conditions...

IEC 60749-39:2021 pdf download - Semiconductor devices – Mechanical and climatic test methods – Part 39: Measurement of moisture diffusivity and water solubility in organic materials used for semiconductor components. NOTE Calculating the volume by measuring the...

IEC 61800-2:2021 pdf download - Adjustable speed electrical power drive systems – Part 2: General requirements – Rating specifications for adjustable speed AC power drive systems. 2 Normative references The following documents are referred to in the...