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Railway applications. Fixed installations. Particular requirements for alternating current switchgear - Disconnectors, earthing switches and switches with nominal voltage above 1 kV. Original standard BS EN 50152-2-2012 in PDF full version. Additional info + preview on request

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Domestic and similar electronic equipment interconnection requirements- AV. link - General. Original standard BS EN 50157-1-1999 in PDF full version. Additional info + preview on request

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Domestic and similar electronic equipment interconnection requirements- AV. link - Signal quality matching and automatic selection of source devices. Original standard BS EN 50157-2-1-1999 in PDF full version. Additional info + preview on request

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Domestic and similar electronic equipment interconnection requirements- AV. link - Basis system oriented commands - Basic system oriented commands. Original standard BS EN 50157-2-2-1999 in PDF full version. Additional info + preview on request

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Domestic and similar electronic equipment interconnection requirements- AV. link - System oriented application - System oriented application. Original standard BS EN 50157-2-3-1999 in PDF full version. Additional info + preview on request

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Information technology. Cabling installation - Part 3- Installation planning and practices outside buildings. Original standard BS EN 50174-3-2013 + A1-2017 in PDF full version. Additional info + preview on request

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