POWER UNITS

Discussion in 'Physics' started by skarthikeyan94, Jan 16, 2006.

  1. skarthikeyan94

    Thread Starter New Member

    Jan 16, 2006
    1
    0
    Why the capacities of stabilizers and UPS are quoted in VA and kVA?
    What is the relation between VA and watt?
     
  2. alim

    Senior Member

    Dec 27, 2005
    113
    1
    Stabilisers UPS Transformers, are all rated in VA or KVA,to state how much current times its voltage should be consumed.What it means is while a device(non-resistive) is connected and draws 1 amp at 100volts the WATTAGE is 100 ,but being non-resistive there is some reactive current, which is wasted-the amount depends on the power factor of the cct.Wattage =VxA xpf. If pf= 0.9 VA=100/0.9=111 VA.
     
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