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Electric fans and regulators for use in ships. Original standard IEC 60307-1969 in PDF full version. Additional info + preview on request

Document status: Replaced by St IEC 60879-2025

Amendment 1 - Temperature control devices for quartz crystal units. Original standard IEC 60314-1970 amd1-1979 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Temperature control devices for quartz crystal units. Original standard IEC 60314-1970 in PDF full version. Additional info + preview on request

Document status: Withdrawn

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Document status: Withdrawn