UL 9:2020 pdf download

UL 9:2020 pdf download

1.1 These methods of fire tests are applicable to window assemblies, including glass block and other light transmitting assemblies, for use in the protection of openings in vertical fire resistive assemblies. 1.2 Assemblies classified in accordance with this standard provide only limited protection from the transmission of heat. This standard provides guidance to measure the […]

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UL 5B:2019 pdf download

UL 5B:2019 pdf download

1.1 These requirements cover strut-type channel raceways and fittings for use only in dry locations and in accordance with the National Electrical Code, NFPA 70. 1.2 Strut-type channel raceways of the following thicknesses are intended to enclose circuits operating at potentials not exceeding 600 volts between conductors: a) Strut-type channel raceways that are entirely of

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IEC 63275-1:2022 pdf download

IEC 63275-1:2022 pdf download

This part of IEC 63275 gives a test method to evaluate gate threshold voltage shift of silicon carbide (SiC) power metal-oxide-semiconductor field-effect transistors (MOSFETs) using room temperature readout after applying continuous positive gate-source voltage stress at elevated temperature. The proposed method accepts a certain amount of recovery by allowing large delay times between stress and

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