IEC 60417C:1977 Withdrawn

Third supplement.


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Earth, clean (noiseless) earth, protective earth, frame or chassis, equipotentiality, omnidirectional microphone, bidirectional microphone, unidirectional or cardioid microphone, hydrophone, underwater sound projector, reversible transducer for underwater sound, transformer, clock; time switch; timer, Morse key; electric shaver outlet.

Additional information

Publication typeInternational Standard
Publication date1977-01-01
Available language(s)English/French, Russian
TC/SCTC 3 - Documentation, graphical symbols and representations of technical informationrss
ICS01.080.10 - Public information symbols
File size1081 KB

The following test report forms are related:

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