how to size a 3 phase transformer?

Tagged: answer, FAQ, power transformer, question, transformer

This topic has 1 reply, 2 voices, and was last updated 3 months, 2 weeks ago by David.

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02.04.2026 at 08:48 #8144

Floris
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how to size a 3 phase transformer?

02.04.2026 at 09:00 #8145

David
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To size a three-phase transformer, first determine the total load in kilowatts (kW) that the transformer will supply. Convert this load to kilovolt-amperes (kVA) by dividing by the power factor (typically between 0.8 and 1). Use the formula: kVA = kW / Power Factor. Consider future load growth and any applicable local codes. Finally, select a transformer with a kVA rating that meets or exceeds this calculated value to ensure reliable operation.
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