IG-267-EN versión 01; 07/04/2017
30
Protection functions General Instructions
ekor.rpa
The following image shows an example of calculation of the
sequences based on an imbalanced system. It is observed
that the system has a large inverse component, but no zero-
sequence (situation which can come about in lines which
are not uniformly charged in the three phases):
Line currents Direct-sequence currents
Inverse-sequence currents Zero-sequence currents
Figure 4.9. Calculation of sequences
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