Electrical testing equipment — transformer kVA measurement

Engineering Tool

Transformer kVA Calculator

Estimate required transformer capacity based on your load parameters. Enter voltage, current, and power factor to get a recommended standard IEC kVA size.

Load Parameters

V
A
0%25%50%

Please enter valid voltage and current values.

Results will appear here

Enter your load parameters and click Calculate

Estimated Load

kVA

Recommended Size

kVA (standard)

Calculation Breakdown

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Results are for preliminary estimation only. Final selection should be confirmed based on project specifications and engineering review.

Three-Phase Formula

kVA = (√3 × V × I) / 1000 × (1 + margin)

Single-Phase Formula

kVA = (V × I) / 1000 × (1 + margin)

Standard Sizes

Recommended size is the next IEC standard size above your calculated load.