Transformer sizing calculator | Voltformer
Estimate transformer kVA from connected load, power factor, diversity and growth reserve.
Transformer sizing calculator
Estimate transformer kVA from connected load, power factor, diversity and growth reserve.
How to use this tool
Base sizing: kVA = kW × diversity × (1 + reserve/100) / power factor. Site derating may increase the rating. Voltage and phases are required for catalog matching; cable sizing needs a separate site study.
Transformer sizing calculator
Estimate transformer kVA from connected load, power factor, diversity and growth reserve.
- Inputs
- Connected active load (kW), power factor, diversity, growth reserve (%), voltage and phases.
- Results
- Demand kW, apparent kVA, standard rating and preliminary catalog matches.
- Interpretation and limits
- Base sizing: kVA = kW × diversity × (1 + reserve/100) / power factor. Site derating may increase the rating. Voltage and phases are required for catalog matching; cable sizing needs a separate site study.