Standards World

IEC 60238:2020 pdf free download - Edison screw lampholders 1 Scope This International Standard applies to lampholders with Edison thread E14,E27 and E40,designed for connection to the supply of lamps and semi-luminaires1 only. lt also applies to...

IEC 60172:2020 pdf free download - Test procedure for the determination of the temperature index of enamelled andtape wrapped winding wires 4 summary of procedure A set of specimens in accordance with Clause 5 is subjected to...

IEC 60112:2020 pdf free download - Method for the determination of the proof and the comparative tracking indicesof solid insulating materials 4 Principle The upper surface of the test specimen is supported in a horizontal plane and...

IEC 60099-5:2000 pdf free download - Surge arresters For range l systems containing overhead lines，the main risk to equipment arises frominduced and direct lightning strokes to the connected overhead lines. in cable systems notconnected to overhead lines，overvoltages...

IEC 60092-354:2020 pdf free download - Electrical installations in ships 1 Scope This part of lEC 60092 is applicable to shipboard and offshore power cables with extrudedsolid insulation, conductor and core screening, having a voltage rating of...

IEC 60079-26:2021 pdf free download - Explosive atmospheres 5.2.2Basic requirements The following basic requirements apply for separation elements: a) a separation element shall provide a boundary between different areas or parts of the equipment complying with different...

IEC 60754-2:2011 pdf free download - Test on gases evolved during combustion of materials from cables 7.3 Heating procedure The air flow shall be adjusted by means of a needle valve to the value specified in 5.6...

IEC 60754-1:2011 pdf free download - Test on gases evolved during combustion of materials from cables 1 Scope This part of lEC 60754 specifies the apparatus and procedure for the determination of theamount of halogen acid gas,other...

IEC 60749-41:2020 pdf free download - Semiconductor devices - Mechanical and climatic test methods 3.4 data pattern mix of several 1s and 0s in the memory and their physical or logical positions Note 1 to entry: A...

IEC 60749-20:2020 pdf free download - Semiconductor devices - Mechanical and climatic test methods 4 General description Package cracking and electrical failure in plastic encapsulated SMDs can result whensoldering heat raises the vapour pressure of moisture which...