Susceptance

In electrical engineering, the susceptance (B) is the complex part of the admittance. In SI units, the susceptance is measured in siemens

<math>Y = G + j B \,<math>

where

Y is the admittance, measured in siemens

G is the conductance, measured in siemens

<math>j = \sqrt{-1} \, <math>

B is the susceptance, measured in siemens.

The admittance (Y) is the inverse of the impedance (Z)

<math>Y = 1/Z \,<math>

where

<math>Z = R + j X \,<math>

Z is the impedance, measured in ohms

R is resistance, measured in ohms

X is the reactance, measured in ohms.

Note: The susceptance is NOT the inverse of the reactance.

The magnitude of admittance is given by:

<math>\left | Y \right | = \sqrt {G^2 + B^2} \,<math>

SI electricity units

External links

• Conductance, Susceptance, and Admittance (http://www.geocities.com/SiliconValley/2072/eleccsa.htm)

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