Variable Transformer Calculator Automatically match recommended transformer models based on your provided single-phase and three-phase specification tables. Phase Type Single PhaseThree Phase Voltage (V) Current (A) Safety Margin No Margin20%25%30% Calculate Transformer Single Phase Formula P = V × I Three Phase Formula P = 1.732 × V × I Calculated Load 0 VA Required Capacity 0 kVA Recommended Model – Rated Current – Dimensions (mm) – Net Weight – Choosing the right variable transformer is not simply about matching voltage ratings. Selecting the wrong size or configuration can lead to overheating, unstable output voltage, equipment failure, or unnecessary operating costs. Whether you need a variable transformer for industrial equipment,