Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units (IEC 60027-3:2002); German version EN 60027-3:2007
Edition 2007-11

Environmental testing - Part 5: Guide to drafting of test methods; terms and definitions (IEC 60068-5-2:1990); German version EN 60068-5-2:1999
Edition 2000-08

Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; diversity, twin-path and hot stand-by equipment; identical with IEC 60487-2-6:1984
Edition 1992-05

Classification of environmental conditions - Part 1: Environmental parameters and their severities (IEC 60721-1:1990 + A1:1992 + A2:1995); German version EN 60721-1:1995 + A2:1995
Edition 1997-02

Operating conditions for industrial-process measurement and control equipment - Part 2: Power (IEC 60654-2:1979 + A1:1992); German version EN 60654-2:1997
Edition 1998-08

Operating conditions for industrial-process measurement and control equipment - Part 3: Mechanical influences (IEC 60654-3:1983); German version EN 60654-3:1997
Edition 1998-08

Standardization - Part 4: Working procedure
Edition 2021-02

Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; stand-by channel switching equipment; identical with IEC 60487-2-2, edition 1981
Edition 1987-03

Sensitive switches for communication technology; dimensions, ratings, requirements, tests; type F
Edition 1984-11

Non-broadcast video tape recorders - Methods of measurement - Part 1: General video (NTSC/PAL) and audio (longitudinal) characteristics (IEC 61041-1:1990); German version EN 61041-1:1995
Edition 1996-06