![]() Enter any two values, then click or tap "Calculate"ģ-Phase KVA = Volts x Amps x 1.732 / 1000ģ-Phase Amps = KVA / Volts / 1. Using this formula, we have prepared a calculator. Enter two and calculate the third value quickly. Essentially, you might have already figured out that Volt-Ampere is equivalent to a Watt (1 W 1 AV 1 AV). If the ratio of KVA rating to percentage impedance of two transformers. NOTE: If you need assistance with circuit protection devices such as fuses or breakers, or wire sizing, please consult a licensed electrical contractor or electrician in your area who will be familiar with state and local codes.Īll information obtained while using this calculator should be confirmed by a qualified electrical contractor or engineer.Ģ. Calculate electrical power transformer kva, current amps, and voltage. It is easy to calculate the maximum current that a transformer can deliver under. All values should be reviewed and confirmed by an electrician or electrical engineer. When the KVA rating has been calculated, divide that number by 0.8 to get the minimum KVA rating needed. * NOTE: We do not recommend loading a transformer above 80% of its KVA rating.Learn More: CVT in Electrical Capacitive Voltage Transformer CVT. To calculate the VA (Volt-Ampere) rating of a transformer, you need to calculate the product of the voltage and current ratings of the transformer. The load voltage and load amps must be known to calculate KVA rating. Also, power can be calculated from kVA and MVA as below.Transformer capacity is rated in KVA (kilo-volt-amperes).Transformers are sized by determining the total load required (in amps). ![]() Transformer calculator HOW TO SIZE A TRANSFORMER
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