Belarus standards PDF

Corrigendum - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-53- Examinations and measurements - Encircled angular flux (EAF) measurement method based on two-dimensional far field data from multimode waveguide (including fibre). Original standard UNE-EN IEC 61300-3-53-2021 AC-2023 in PDF full version. Additional info + preview on request

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Amendment 1 - Wind energy generation systems - Part 6- Tower and foundation design requirements (IEC 61400-6-2020/AMD1-2025). Original standard UNE-EN IEC 61400-6-2020 A1-2025 in PDF full version. Additional info + preview on request

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Corrigendum - Low-voltage switchgear and controlgear assemblies Part 1- General rules. Original standard UNE-EN IEC 61439-1-2021 AC-2022 in PDF full version. Additional info + preview on request

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Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC. Equipment for testing, measuring or monitoring of protective measures - Non-contact AC voltage indicators (IEC 61557-17-2021). Original standard UNE-EN IEC 61557-17-2021 in PDF full version. Additional info + preview on request

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Amendment 11 - Low-voltage surge protective devices - Part 41- Surge protective devices connected to DC low-voltage power systems - Requirements and test methods. Original standard UNE-EN IEC 61643-41-2025 A11-2025 in PDF full version. Additional info + preview on request

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Corrigendum - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 13- Type fc-PC connector family. Original standard UNE-EN IEC 61754-13-2024 AC-2025 in PDF full version. Additional info + preview on request

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