What are the applications of various types of three-phase transformers?
A plant consists of two 10 MVA generators of reactance 18% each and two 5 MVA generators of 12% each. All are connected to bus bar to supply a load through three step up transformers of 8 MVA each having reactance of 8%. Determine fault MVA on HV side of any one transformer.
What are the types of transformers used in SMPS?
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Are the two types of transformers?
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What is the significance of phase shift in three-phase transformers?
List the conditions for parallel operation of three-phase transformers.
A three-phase transformer having a line voltage ratio of 0.4 kV/11kV is connected Star/Delta and protective transformers on the 0.4 kV side have a current ratio of 500/5. Calculate the ratio of ... on the 11 kV side. Draw a neat circuit diagram and indicate the given values at appropriate places.
A 220V/22kV three-phase transformer is connected in star/delta. The protective transformers on the 220V side have a current ratio of 400/5. Calculate the CT ratio on the 22kV side.
Write any two differences between single-phase and three-phase transformers.
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