IEC 61803-1999 Determination of power losses in high-voltage direct current (HVDC) converter stations《高压直流(HVDC)变流站功率损失的测定》.pdf

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IEC TR 61241-2-2-1993 Electrical apparatus for use in the presence of combustible dust part 2 test methods section 2 method for determining the electrical resis.pdf

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