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High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches. Original standard UNE-EN IEC 62271-102-2021 in PDF full version. Additional info + preview on request

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High-voltage switchgear and controlgear - Part 104- Alternating current switches for rated voltages higher than 52 kV. Original standard UNE-EN IEC 62271-104-2021 in PDF full version. Additional info + preview on request

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High-voltage switchgear and controlgear - Alternating current contactors, contactor-based controllers and motor-starters. Original standard UNE-EN IEC 62271-106-2021 in PDF full version. Additional info + preview on request

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High-voltage switchgear and controlgear - Alternating current high-speed earthing switches for secondary arc extinction on transmission lines. Original standard UNE-EN IEC 62271-112-2021 in PDF full version. Additional info + preview on request

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High-voltage switchgear and controlgear - Phase comparator used with VDIS. Original standard UNE-EN IEC 62271-215-2021 in PDF full version. Additional info + preview on request

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Determination of certain substances in electrotechnical products - Disassembly, disjointment and mechanical sample preparation. Original standard UNE-EN IEC 62321-2-2021 in PDF full version. Additional info + preview on request

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