FindCurrent Rating To find the phase current rating if the 50HZ load KW or KVA is known, select the known KVA or KW rating on the chart above. Scan across the row to the right until the three phase L-L (line to line) voltage being utilized column is reached. Useful Electrical Formulas KVA = Volts x Amps x 1.732 1,000 KW = KVA x Power Factor
4 How to convert kW to kVA in 3 phase? To convert kW to kVA in a three-phase electrical system, the formula slightly changes to account for the three-phase power. The formula is: kVA = kW/PF ×√3 × Line Voltage. Here, the line voltage is the voltage between any two of the three phases. 5. kW to kVA conversion for transformer .