STM PDF

Amendment 2 - Electrical installations of buildings - Part 4- Protection for safety - Chapter 44- Protection against overvoltages - Section 442- Protection of low-voltage installations against faults between high-voltage systems and earth. Original standard IEC 60364-4-442-1999 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60364-4-44-2024

Electrical installations of buildings - Part 2- Definitions - Chapter 21- Guide to general terms. Original standard IEC TR 60364-2-21-1993 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60364-1-2025

Simplified method for pressure calibration of one-inch condenser microphones by the reciprocity technique. Original standard IEC 60402-1972 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Audio frequency generators. Original standard IEC 60403-1972 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60716-1981

Safety requirements for indicating and recording electrical measuring instruments and their accessories. Original standard IEC 60414-1973 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 61010-1-2017

Safety requirements for arc welding equipment - Plugs, socket-outlets and couplers for welding cables. Original standard IEC 60501-1975 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60974-12-2022