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Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Leakance is an obsolete word for "leakage conductance", the inverse of insulation resistance. I've seen it mentioned in a power engineering textbook from the 1930s.
Being a conductance, it should be in mhos, or siemens, they're the same thing.
When working with conductances, the usual circuit laws apply, but series and parallel change places. So conductances in parallel add, like resistances in series. This is the main motivation for using them, to ease the maths of combining a lot of parallel resistances.
You can also get an inverse of complex impedance, which is called "Admittance", the real part being conductance as mentioned, and the imaginary part being "Susceptance". Again they are used to make it easier to calculate complex impedances in parallel.
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Leakance
