Standards World

IEC 62059-32-1:2011 pdf free download - Electricity metering equipment - Dependability The MUT shall be mounted as for normal operation，with all covers and terminal covers inplace. The ability of the MUT to transfer heat by thermal radiation...

IEC 62053-41:2021 pdf free download - Electricity metering equipment - Particular requirements 1 Scope This part of lEC 62053 applies only to static watt-hour meters of accuracy classes 0,5 and 1 forthe measurement of DC electrical energy...

IEC 62053-23:2020 pdf free download - Electricity metering equipment - Particular requirements 1 scope This part of lEC 62053 applies only to static var-hour meters of accuracy classes 2 and 3 forthe measurement of alternating current electrical...

IEC 62053-22:2020 pdf free download - Electricity metering equipment - Particular requirements 1 scope This part of lEC 62053 applies only to transformer operated static watt-hour meters of accuracyclasses 0,1 S,0,2 s and 0,5 s for the...

IEC 62047-38:2021 pdf free download - Semiconductor devices - Micro-electromechanical devices 4.3Measurement of dimensions To analyze the test results, the dimensions of the contact area shall be accurately measuredbecause the dimensions are used to determine the adhesion...

IEC 62047-37:2020 pdf free download - Semiconductor devices - Micro-electromechanical devices 1 Scope This part of IEC 62047 specifies test methods for evaluating the durability of MEMSpiezoelectric thin film materials under the environmental stress of temperature and...

IEC 62037-5:2021 pdf free download - Passive RF and microwave devices, intermodulation level measurement 4.1sources of error: back-to-back filters Testing filter assemblies for PlM can be error prone if certain precautionary guidelines are notfollowed.Since PlM can be...

IEC 61753-2-1:2000 pdf free download - Fibre optic interconnecting devices andpassive components performance standard 1Scope This part of lEC 61753 contains the minimum requirements and severities which a single-modeconnector/cable assembly must satisfy in order to be considered...

IEC 61558-2-19:2000 pdf free download - Safety of power transformers, power supply unitsand similar devices 19.1.2 For transformers with intermediate metal parts (e.g. the iron core) not connected to thebody and located between the input and output...

IEC 61468:2021 pdf free download - Nuclear power plants - Instrumentation systems important to safety SPNDs are available in a variety of designs with sensitive lengths ranging from a fewcentimetres to full core height.The design of an...