Relation Between KVA And KW

KVA and KW are the units measuring power under the international system of units. Kilovolt-Amps in short KVA is the unit measuring apparent power and Kilo Watt in short KW is the unit measuring real power. The relation between KVA and KW are proportional.

KVA And KW

The relation between KVA and KW is mathematically given as-

KW = KVA × PF

Where,

  • KW is the unit measuring real power.
  • KVA is the unit measuring apparent power.
  • PF is the Power Factor.

KW is directly proportional to KVA, which means that-

  • When KW increases, proportionately KVA will also increase.
  • When KW decrease, proportionately KVA will also decrease.
  • When KVA decrease, KW will also decrease.
  • When KVA increase, KW will also increase.

Relation Between KVA And KW for AC and DC circuits

Power of AC and Power of DC varies as the relation between KVA and KW varies from alternating current circuits to Direct Current circuit. It can be mathematically written as follows-

Condition

Formula

AC Circuit

Power Factor > 1

KW = KVA × PF

DC Circuit

Power Factor =1

KW=KVA

KVA to KW Calculations

Conversion KVA to KW; two units of power is important in physics to solve many problems. The conversion is given by-

  • \(KVA=\frac{KW}{PF}\)
  • Example: If the Power Factor is 0.5, and KW is 120 then \(KVA=\frac{120}{0.5}\) = 240KVA

KW to KVA Calculations

Conversion from KW to KVA; units of power is important in physics to solve many problems. The conversion is given by-

  • \(KW=KVA\times PF\)
  • Example: If the Power Factor is 0.5, and KVA is 120 then \(KW=120KVA\times 0.5\) = 60KW

Hope you understood the relation between KW and KVA of electric current for alternating current(AC)circuits and Direct Current(DC) circuit.

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