Standards World

AS NZS IEC 62676.3:2020 pdf free download – Video surveillance systems for use in security applications

AS NZS IEC 62676.3:2020 pdf free download - Video surveillance systems for use in security applications 4.2.1 General The physical interfaces of video surveillance devices are used to connect devices through fiber optic or video cables etc.,...

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ISO 23599:2012 pdf free download – Assistive products for blind and vision- impaired persons一Tactile walking surface indicators

ISO 23599:2012 pdf free download - Assistive products for blind and vision- impaired persons一Tactile walking surface indicators. The purpose of this International Standard is to create requirements for tactile walking surface indicators (TWSIs) for blind or vision-impaired...

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BS IEC 60748-11:2000 pdf free download – Semiconductor devices – Sectional specification for semiconductor integrated circuits excluding hybrid circuits

BS IEC 60748-11:2000 pdf free download - Semiconductor devices - Sectional specification for semiconductor integrated circuits excluding hybrid circuits 2.4.3 Changes in manufacturing operations 1) Definition of major changes Any change in manufacturing process or technology which...

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ISO 23550:2011 pdf free download – Safety and control devices for gas burners and gas-burning appliances一 General requirements

ISO 23550:2011 pdf free download - Safety and control devices for gas burners and gas-burning appliances一 General requirements. ISO 23550 provides general requirements for controls and safety devices for gas burners and gas-burning appliances and is intended...

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AS NZS IEC 60947.7.3:2015 pdf free download – Low-voltage switchgear and controlgear

AS NZS IEC 60947.7.3:2015 pdf free download - Low-voltage switchgear and controlgear 8.5.2.7 Test procedure The dummy fuse-links provided for the test (separate arrangement and compound arrangement) shall be selected from Table 2 and inserted into the...

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ISO 23523:2021 pdf free download – Test methods for discrete polymer fibre for fibre-reinforced cementitious composites

ISO 23523:2021 pdf free download - Test methods for discrete polymer fibre for fibre-reinforced cementitious composites. Polymer fibre in this document means a fibre made with macromolecule substances as raw material such as aramid fibre, polyamide fibre,...

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BS EN IEC 62812:2019 pdf free download – Low resistance measurements – Methods and guidance

BS EN IEC 62812:2019 pdf free download - Low resistance measurements - Methods and guidance 4.4 Variation of resistance with temperature One of the reference conditions prescribed in IEC 601 1 5-1 for measuring the resistance is...

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ISO 23517:2021 pdf free download – Plastics一Soil biodegradable materials for mulch films for use in agriculture and horticulture一 Requirements and test methods regarding biodegradation, ecotoxicity and control of constituents

ISO 23517:2021 pdf free download - Plastics一Soil biodegradable materials for mulch films for use in agriculture and horticulture一 Requirements and test methods regarding biodegradation, ecotoxicity and control of constituents. Biodegradable mulch films are used worldwide in agriculture...

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BS IEC 62954:2019 pdf free download – Nuclear power plants – Control rooms – Requirements for emergency response facilities

BS IEC 62954:2019 pdf free download - Nuclear power plants - Control rooms - Requirements for emergency response facilities 9.1 General The three facilities that comprise the ERFs perform quite different roles, as described in 5.2, requiring...

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ISO 23458:2020 pdf free download – Fine ceramics (advanced ceramics, advanced technical ceramics)一Test method for determining thermal expansion coefficient and residual stress of CVD ceramic coatings

ISO 23458:2020 pdf free download - Fine ceramics (advanced ceramics, advanced technical ceramics)一Test method for determining thermal expansion coefficient and residual stress of CVD ceramic coatings. 5.5 Data recording system A system capable of measuring displacements to...

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