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Unformatted text preview: = and we found previously: Z eqhs 16.53 132.3j + ( ) = Find the voltage regulation of the transformer if it is delivering rated current at a rated voltage and a power factor of 0.8 lagging. Solution : First we must find rated current I srated S rated V srated = I srated 1.389 10 3 amp = The actual current is at a power factor of 0.8 lagging so the angle is: acos .8 ( ) = 36.87deg = and the current is: I s I srated cos ( 29 I srated sin ( 29 j -= I s 1.111 10 3 833.333j-amp = The actual secondary voltage is: V s 7200 volt =...
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- Spring '12