Determine parameters of the equivalent circuit

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Reference no: EM13247119

A 60-kVA, 4800/2400-V single-phase transformer gave the following test results:

(i) Rated voltage is applied to the low voltage winding and the high voltage winding is open-circuited. Under this condition, the current into the low voltage winding is 2.4 A, and the power taken from the 2400 V source is 3456 W.
(ii) A reduced voltage of 1250 V is applied to the high voltage winding and the low voltage winding is short-circuited. Under this condition, the current flowing into the high voltage winding is 12.5 A, and the power taken from the 1250 V source is 4375 W.

(a) Determine parameters of the equivalent circuit referred to the high voltage side.

(b) Determine voltage regulation and efficiency when transformer is operating at full-load, 0.8 power factor lagging, and a terminal voltage of 2400 V.

(d) Determine the efficiency when transformer is operating at 3/4 full-load, 0.8 power factor lagging, and a terminal voltage of 2400 V.

(e) Verify your answers by running the trans program in MATLAB and obtain the transformer efficiency curve.

Reference no: EM13247119

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