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  • KVA is an abbreviation for Kilo Volt Ampere = 1000 Volt Ampere
  • MW is an abbreviation for Mega Watt = 1000 000 Watt
  • A KVA is simply 1,000 volt amps. A volt is electrical pressure while an amp is electrical current. A term called apparent power (the absolute value of complex power, is equal to the product of the volts and amps).
  • On the other hand, a Watt (W) is a measurement of real power. Real power is the amount of actual power that can be drawn from a circuit. When the voltage and current of a circuit coincide, the real power is equal to the apparent power. However, as waves of current and voltage coincide less, less real power is transferred, even though the circuit is still carrying current.
  • Differences between real and apparent power, and thus Watts and volt amps, arise because of reactance in the devices being powered. They're usually inductive, so alignment of the voltage and current is usually accomplished by adding capacitance across the supply line.
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