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Power transformers Additional European requirements Part 2-6- Medium power transformers Non-conventional magnetic steel technology. Original standard UNE-EN 50708-2-6-2023 in PDF full version. Additional info + preview on request

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Power transformers Additional European requirements Part 3 4- Large power transformer Special tests for corrugated tank and radiators. Original standard UNE-EN 50708-3-4-2023 in PDF full version. Additional info + preview on request

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Roofing and cladding products from metal sheet Specification for self-supporting products of steel, aluminium or stainless steel sheet Part 1- Steel. Original standard UNE-EN 508-1-2022 in PDF full version. Additional info + preview on request

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Fire detection and fire alarm systems Part 1- Introduction. Original standard UNE-EN 54-1-2022 in PDF full version. Additional info + preview on request

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Amendment 31 - Lamp caps and holders together with gauges for the control of interchangeability and safety Part 2- Lampholders. Original standard UNE-EN 60061-2-1996 A31-2006 in PDF full version. Additional info + preview on request

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Amendment 32 - Lamp caps and holders together with gauges for the control of interchangeability and safety Part 2- Lampholders. Original standard UNE-EN 60061-2-1996 A32-2006 in PDF full version. Additional info + preview on request

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