IEC 62054-21-2004 Electricity metering (a.c.) - Tariff and load control - Part 21 Particular requirements for time switches《交流测量.费率和负荷控制.第21部分 时间开关的特殊要求》.pdf

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IEC TS 62492-1-2008 Industrial process control devices - Radiation thermometers - Part 1 Technical data for radiation thermometers《工业过程控制装置 辐射温度计 第1部分 辐射温度计的技术数.pdf

IEC TR2 61464-1998 Insulated bushings - Guide for the interpretation of dissolved gas analysis (DGA) in bushings where oil is the impregnating medium of the mai.pdf

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

IEC TR 60972-1989 Classification and interpretation of new lighting products《新型照明产品的分类和说明》.pdf

IEC TR 60943 Edition 21-2009 Guidance concerning the permissible temperature rise for parts of electrical equipment in particular for terminals《特殊终端中电气设备部件用关于允许.pdf

IEC TR 60943 AMD 1-2008 Guidance concerning the permissible temperature rise for parts of electrical equipment in particular for terminals Amendment 1《电气设备部件(特别.pdf

IEC TR 60919-2-2008 Performance of high-voltage direct current (HVDC) systems with line-communicated converters - Part 2 Faults and switching《带线性通信转换器的高压直流(HVDC.pdf

IEC TR 60870-6-505 Edition 11-2006 Telecontrol equipment and systems - Part.6-505 Telecontrol protocols compatible with ISO standards and ITU-T recommendations .pdf

IEC TR 60344 CORR1-2012 Calculation of d c resistance of plain and coated copper conductors of low-frequency cables and wires - Application guide Corrigendum 1《.pdf

IEC 62560 CORR1-2012 Self-ballasted LED-lamps for general lighting services by voltage 50 V - Safety specifications Corrigendum 1《普通照明用50 V以上自镇流LED灯 安全要求 勘误表1》.pdf

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