Standards World

IEC 60947-4-2:2011 pdf free download - Low-voltage switchgear and controlgear 1 Scope This standard applies to a.c. semiconductor motor controllers and starters,which may includea series mechanical switching device, intended to be connected to circuits, the rated voltageof...

IEC 60947-3:2020 pdf free download - Switches, disconnectors, switch-disconnectors and fuse-combination units 1 Scope This part of lEC 60947 applies to switches,disconnectors，switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motorcircuits...

IEC 60904-1:2020 pdf free download - Photovoltaic devices 1Scope This part of lEC 60904 describes procedures for the measurement of current-voltagecharacteristics (-V curves) of photovoltaic(PV) devices in natural or simulated sunlight.Theseprocedures are applicable to a single PV...

IEC 60840:2020 pdf free download - Power cables with extruded insulation and their accessories for rated voltagesabove 30 kV(Um = 36 kV) up to 150 kV(Um= 170 kV)-Test methods and requirements 10.2 Frequency of tests The sample...

IEC 60809:2021 pdf free download - Lamps and light sources for road vehicles - Dimensional, electrical andluminous requirements The requirements for miniature light sources for supplementary purposes,not subject tolegislation,are specified in lEC 60983. NOTE 1 The terms...

IEC 62107:2000 pdf free download - super video compact disc - Disc-interchange system-specification 1Scope This International Standard defines the basic specification of the Super Video Compact Disc,(SuperVCD), characterized by high resolution and high picture quality, which matches...

IEC 61131-7:2000 pdf free download - Programmable controllers 1 Scope and object This part of lEC 61131 defines a language for the programming of Fuzzy Control applicationsused by programmable controllers. The object of this part of lEC...

IEC 60934:2000 pdf free download - Circuit-breakers for equipment (CBE) 1 Scope and object This International Standard is applicable to mechanical switching devices designed as "circuit-breakers for equipment"(CBE) intended to provide protection to circuits within electricalequipment. NOTE...

IEC 60580:2000 pdf free download - Medical electrical equipment 3.17 INTRINSIC ERROR deviation of the MEASURED VALUE(i.e. the INDICATED VALUE,corrected to REFERENCECONDITIONs) from the cONVENTIONAL TRUE VALuE under STANDARD TEST CONDITIONS (IEC 60731) 3.18 IONIZATION CHAMBER detector...

IEC 60204-11:2000 pdf free download - Safety of machinery 1 Scope IEC 60204 applies to the electrical and electronic equipment and systems of machines,including a group of machines working together in a coordinated manner, but excluding higherlevel...