This part of IEC 60027 gives general information about logarithmic and related quantities, and
their units. Names and symbols for logarithmic quantities are given in other parts of
IEC 60027, mainly in part 2, in the context where they belong.
CENELEC EN 60027-3-2007 history
2007CENELEC EN 60027-3-2007 Letter symbols to be used in electrical technology — Part 3: Logarithmic and related quantities, and their units