Single Phase Transformer

  3,000 pts awarded

For a single-phase, 60-Hz transformer rated at 500kVA, 2400:480 V, and the load connected across the low-voltage terminals draws rated current at 0.8 lagging power factor with rated voltage at the terminals.

\(R_{1} = 0.06\Omega\) \(X_{l1}=0.3\Omega\)

\(R_{2}=0.003 \Omega\) \(X_{l2}=0.012 \Omega\)

\(R_{c}=2k\Omega\) \(X_{m}=.5k\Omega\)

a. Calculate the high voltage winding terminal voltage, current, and power factor.

b. Compute the transformer efficiency for the given condition of load.

c. Determine the transformer series equivalent impedance for the high voltage and low voltage side.

useful equations:

\(V_{1} = E_{1} + I_{1}(R_{1}+jX_{l1})\) \(E_{2}=V_{2}+I_{2}(R_{2}+jX_{l2})\) \(E_{1}/E_{2} = N_{1}/N_{2} = a\)

Answers (3)

  • 3mma298002
    Rating:4 stars

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