![]() To better understand this or gain more insight, you can read the Introduction to Three Phase Electric Power post In a three phase system we have the line to line voltage (V LL) and the phase voltage (V LN), related by: Three phase system - The main difference between a three phase system and a single phase system is the voltage. To convert from VA to kVA just divide by 1000. Note: you can do these equations in either VA, V and A or kVA, kV and kA depending on the magnitude of the parameters you are dealing with. As an example, consider a load consuming 23 kW of power at 230 V and a power factor of 0.86: The current is simply the kVA divided by the voltage. Given the kW and power factor the kVA can be easily worked out. Single phase system - this is the easiest to deal with. The relationship between kVA and kW is the power factor (pf): The product of the voltage and current is the apparent power and measured in VA (or kVA). ![]() The power taken by a circuit (single or three phase) is measured in watts W (or kW).
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