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Railway applications. Fixed installations. Process, protective measures and demonstration of safety for electric traction systems. Original standard UNE-EN 50562-2019 in PDF full version. Additional info + preview on request

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Amendment 1 - Electrical and electronic household and office equipment Measurement of networked standby power consumption of edge equipment. Original standard UNE-EN 50643-2019 A1-2021 in PDF full version. Additional info + preview on request

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Plug-in type bushings for 72,5 kV with 630 A and 1 250 A for electrical equipment. Original standard UNE-EN 50673-2019 in PDF full version. Additional info + preview on request

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Fire detection and fire alarm system Part 28: Non-resettable line-type heat detectors. Original standard UNE-EN 54-28-2019 in PDF full version. Additional info + preview on request

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Amendment 1 - Fire detection and fire alarm systems Part 3: Fire alarm devices - Sounders. Original standard UNE-EN 54-3-2016 + A1-2019 in PDF full version. Additional info + preview on request

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Amendment 1 - Fire detection and fire alarm systems Part 5: Heat detectors Point heat detectors. Original standard UNE-EN 54-5-2017 + A1-2019 in PDF full version. Additional info + preview on request

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