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Determination of phase and linear currents

Lecture




The currents in the phases are determined by Ohm’s law:

  Determination of phase and linear currents

or

  Determination of phase and linear currents

Line currents are determined by phase currents according to the first Kirchhoff law:

  Determination of phase and linear currents

The line currents are equal to the vector difference of the phase currents of the phases that are connected to this line wire.
  Determination of phase and linear currents
Regardless of the nature of the load, the sum of linear currents is always 0.
When one of the phases changes, the operation mode of the other phases remains unchanged, since generator linear voltage remains constant. The delta connection is used for asymmetric loading.

Vector current chart:

  Determination of phase and linear currents
created: 2014-09-27
updated: 2021-03-13
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Electrical Engineering, Circuit design

Terms: Electrical Engineering, Circuit design