Harmonics What effects could be experienced as a result of harmonics within 1) star transformer systems 2) delta...

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Electrical Engineering

Harmonics

What effects could be experienced as a result of harmonics within

1) star transformer systems
2) delta transformer systems
3) a.c motors

4)Describe the term K factor

5) To imrove the power factor a capacitor bank has beeninstalled. What effects would this have on the harmonics

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4.0 Ratings (518 Votes)

The effects of the harmonic currents are 1 Additional copper losses due to harmonic currents 2 Increased core losses 3 Increased electro magnetic interference with communication circuits On the other hand the harmonic voltages of the transformer cause 1 Increased dielectric stress on insulation 2 Electro static interference with communication circuits 3 Resonance between winding reactance and feeder capacitance 1Yy connection without neutral wires With both primary and secondary connected in star no closed path exists As the triplen harmonics are always in phase by virtue of the Y connection they get canceled See Answer

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