![]() Let us consider a device having an apparent power of 10 kVA having a power factor of 0.8. By the relation given below, we can convert the values. We can understand the relationship between active power and apparent power in an explanation given below : Conversion of kilo volt-ampere ( kVA ) and watt ratings (W ) of AC circuit devices:Ĭonversion of kilo volt-ampere ( kVA ) to watt ( W ) is very simple. The value of the Power factor may vary from 0-1 in AC circuit devices. This is also due to different types of loads acting on it such as inductive loads and capacitive loads, etc. In AC circuit devices, the current and voltage are not in phase due to which the kilowatt ( kW ) and kilo volt-ampere ( kVA ) ratings would not be the same. So, the kilowatt (kW) rating is always equal to the kilo volt-ampere ( kVA ) rating in DC voltage devices. Power factor is always equal to unity in DC circuit devices because the current and voltage are always in phase. In an electric power system, the power factor is the ratio of power that can be utilized in the circuit to the apparent power of the electric circuit. What is the power factor and how does it differ for every device? It also depends on the factor by which the values may change known as the power factor of the electrical device. It depends upon the loads in the circuit and the phase difference of the circuit. The values of kilo volt-ampere ( kVA ) are not the same as a kilowatt (kW) for every device. ![]() It may also be calculated as the product of the current and voltage ratings of the electrical circuit. Kilo volt-ampere (kVA) – It can be said as the apparent power of the electric device. Watt (W) – In an electric device, the power which is used in the circuit is measured in terms of a watt ( W ) and is also called useful power or the actual power of the electric circuit. ![]() What is the difference between watt (W) and kilo volt-ampere (kVA)? The value may look similar but they differ according to the electric circuit. Few devices have power specifications mentioned in watt ( W ) while few are specified in kilo volt-ampere ( kVA ) ratings. In an electric device, the power rating is mentioned on the label. Relationship between kilo volt-ampere (kVA) and watt (W) ratings of electrical devices ![]()
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