TEQ_review

TEQ_review - Transformer Equivalent Circuit - Lab Review...

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Transformer Equivalent Circuit -- Lab Review Sheet Objectives: In this lab you will develop the equivalent circuit of a single phase transformer. This will be accomplished through a short circuit and open circuit test. Transformer Model: The equivalent model of a real transformer is as follows: X1 Vo Io R1 Vs Xc + - X2 + Rc R2 - Is Open Circuit Test: The open circuit test gives Rc and Xc . This test is performed by applying rated voltage to the low voltage side and leaving the high voltage side open. Either side may be used but the voltage is applied to the low voltage side for safety reasons. With the output side left open in the previous figure and assuming that the shunt impedances ( Rc and Xc ) are much larger than the series impedances ( R1 and X1 ) the equivalent circuit model reduces to the following diagram. Vs Xc + Rc - Is The values of Rc and Xc can be calculated using the following formulas from the voltage, current and power measured in this test. OC
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TEQ_review - Transformer Equivalent Circuit - Lab Review...

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