Standards World

AS NZS IEC 60947.5.2:2015 pdf free download – Low-voltage switchgear and controlgear

AS NZS IEC 60947.5.2:2015 pdf free download - Low-voltage switchgear and controlgear 8.3.3.2.4 Independent (snap) action Independent (snap) action shall be checked at maximum and minimum operating load currents at both maximum and minimum rated operating voltages....

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ISO 23239-1:2021 pdf free download – Road vehicles一Vehicle domain service (VDS)一 Part 1: General information and use case definitions

ISO 23239-1:2021 pdf free download - Road vehicles一Vehicle domain service (VDS)一 Part 1: General information and use case definitions. The connected vehicles are expected to expand and become even more popular in the markets of different countries....

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BS EN IEC 62919:2018 pdf free download – Content management – Monitoring and management of personal digital content

BS EN IEC 62919:2018 pdf free download - Content management - Monitoring and management of personal digital content After the content preservation information is stored in the content information server, family ID can be settled on the...

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ISO 23157:2021 pdf free download – Determination of the silanol group content on the surface of fumed silica – – Reaction gas chromatographic method

ISO 23157:2021 pdf free download - Determination of the silanol group content on the surface of fumed silica - - Reaction gas chromatographic method. Fumed silica (pyrogenic silicon dioxide) has a relatively high concentration of silanol groups...

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AS NZS IEC 60812:2020 pdf free download – Failure modes and efects analysis (FMEA and FMECA)

AS NZS IEC 60812:2020 pdf free download - Failure modes and efects analysis (FMEA and FMECA) For large or complex systems (e.g. a railway), it might be necessary to sub-divide the system into subsystems (e.g. rolling stock,...

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ISO 23190:2021 pdf free download – Traditional Chinese medicine一 Determination of aristolochic acids in natural products by high-performance liquid chromatography (HPLC)

ISO 23190:2021 pdf free download - Traditional Chinese medicine一 Determination of aristolochic acids in natural products by high-performance liquid chromatography (HPLC). Aristolochic acids, a class of chemical compounds with renal toxicity, carcinogenic and mutagenic toxicity, are widely...

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ISO 23216:2021 pdf free download – Carbon based films一Determination of optical properties of amorphous carbon films by spectroscopic ellipsometry

ISO 23216:2021 pdf free download - Carbon based films一Determination of optical properties of amorphous carbon films by spectroscopic ellipsometry. This document provides a determination method and a classification for optical properties of amorphous carbon films by spectroscopic...

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AS NZS IEC 60947.4.2:2015 pdf free download – Low-voltage switchgear and controlgear

AS NZS IEC 60947.4.2:2015 pdf free download - Low-voltage switchgear and controlgear 5.3.5.3.1 Starting characteristics of squirrel cage and hermetic refrigeration motors a) One direction of rotation with the inclusion of phase-control capability to provide any combination...

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BS IEC 62830-6:2019 pdf free download – Semiconductor devices – Semiconductor devices for energy harvesting and generation

BS IEC 62830-6:2019 pdf free download - Semiconductor devices – Semiconductor devices for energy harvesting and generation 4.2 Limiting values and operating conditions The characteristic parameters should be listed as shown in Table 1 . The manufacturer...

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ISO 23103:2020 pdf free download – Space link extension一Cross support transfer service一Specification framework

ISO 23103:2020 pdf free download - Space link extension一Cross support transfer service一Specification framework. 4.1 OVERVIEW This section specifies the procedures defined in this Recommended Standard. Subsection 4.2 specifies behaviors that are generally applicable to all procedures. Subsections...

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