STB PDF

Corrigendum - Insulation co-ordination - Part 11: Definitions, principles and rules for HVDC system. Original standard UNE-EN IEC 60071-11-2022 AC-2023 in PDF full version. Additional info + preview on request

Document status: Active

Power transformers, Part 11- Dry-type transformers. Original standard UNE-EN IEC 60076-11-2021 in PDF full version. Additional info + preview on request

Document status: Active

Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires. Original standard UNE-EN IEC 60172-2021 in PDF full version. Additional info + preview on request

Document status: Active

Amendment 11 - Edison screw lampholders. Original standard UNE-EN IEC 60238-2018 A11-2021 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Measuring relays and protection equipment - Part 1- Common requirements. Original standard UNE-EN IEC 60255-1-2024 in PDF full version. Additional info + preview on request

Document status: Active

Sound system equipment - Headphones and earphones. Active acoustic noise cancelling characteristics. Original standard UNE-EN IEC 60268-24-2024 in PDF full version. Additional info + preview on request

Document status: Active