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Transformer kVA Requirement Calculator

Convert a diversified real-power load to an apparent-power transformer requirement, expose the growth increment and apply an explicit project allowance.

Inputs

Design load

Range: 0.001–1,000,000 kW

Enter the diversified real-power demand from the load schedule, not connected load before diversity.

Range: 0.01–1

Use the operating displacement PF for the design load. Distortion, harmonics and future PF changes are not modeled.

Range: 0–500 %

Enter a project-supported allowance. No universal growth factor is assumed.

Result

Apparent load before growth (kVA)
200.00
Additional kVA from entered growth allowance
40.00
Estimated transformer capacity requirement (kVA)
240.00

Formula

Calculation logic

Formula definitions and substituted values.

Before relying on the result

  • Convert a kW demand into kVA
  • Include a project-specific future-load allowance
  • Estimate the apparent-power capacity required before checking an available transformer rating and project conditions.

Related calculators

Estimate the apparent-power capacity required before checking an available transformer rating and project conditions.