Where do I go to find the necessary formulas to calculate the voltage on the low side of a step down transformer? I have the impedance, the watt loss, turns ratio and the load. I can do the v=ir and calculate the voltage drop on an per unit basis but I would like to verify if I am doing it right.
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voltage regulation
- Thread starter bahrra
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You are basically correct. The voltage drop is the difference in source voltage magnitude and load voltage magnitude. Assume one per unit voltage at the load side and add V=I·Z vectorially to get the source voltage. You can get the transformer reactance X in pu from the impedance Z in pu and the resistance R in pu which is load loss divided by the transformer rating. X²=Z²-R²
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