Page 168 - Practical Power System and Protective Relays Commissioning
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168 Practical Power System and Protective Relays Commissioning
FIGURE 16.8 Autotransformer with tertiary winding sequence networks.
FIGURE 16.9 Earthing transformer sequence networks.
Negative-sequence impedance:
Z 2 5 Z 1
Zero-sequence impedance:
Z 0 . Z 1
Motor sequence impedances are described here.
