We can now solve series, parallel or bridge type resistive networks using Kirchoff´s Circuit Laws, mesh analysis or nodal analysis techniques but in a balanced three-phase circuit. we now can reduce by mathematical solutions.
The networks star and delta are obtained from resolving the T and PI resistor networks respectively.If we consider some different examples of T and PI they are shown aa below.
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| PI to DELTA |
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| T to STAR |
Star-delta & Delta-star transformations are used in DC Circuit Theory for analysis of Complex Circuits.Star-Delta Transformer Connection is now commonly used for power supply transformers.
