1.

What Will Happen If Transformer In Parallel Connection Have Different Percentage Impedance Or X/r Ratio ?

Answer»

A difference in the ratio of the reactance value to resistance value of the per UNIT impedance results in a different phase angle of the currents carried by the TWO paralleled transformers; one TRANSFORMER will be WORKING with a higher power factor and the other with a lower power factor than that of the combined OUTPUT. Hence, the real power will not be proportionally shared by the transformers.

A difference in the ratio of the reactance value to resistance value of the per unit impedance results in a different phase angle of the currents carried by the two paralleled transformers; one transformer will be working with a higher power factor and the other with a lower power factor than that of the combined output. Hence, the real power will not be proportionally shared by the transformers.



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