




#130791  02/07/07 01:32 PM
Re: Watt/KVA

Broom Pusher and
Member
Registered: 10/19/00
Posts: 2724
Loc: Anaheim, CA. USA

Here is a simple example of the Power Triangle, which will assist with the Power Factor conclusion: (it also doubles as the Basic Impedance Triangle, and the Basic Pythagoris Theorym)
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4 Watts (True Power), 3 VARs (Reactive Power), 5 VAs (Apparent Power).
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Power Factor = 0.8 (80%) lagging 4 Watts is 80% of 5 VA. 
Some detail to these items:
*** WATTS *** Watts = True Power, KW = Kilo Watts = 1,000 Watts;
*** VA *** VA = VoltAmps = Apparent Power = Reactive Power and True Power compiled, KVA = Kilo VoltAmps = 1,000 VoltAmps = 1,000 VA;
*** VAR *** VAR = VoltAmps Reactive = Reactive Power = Scuttle Power, KVAR = Kilo VoltAmps Reactive = 1,000 VoltAmps Reactive = 1,000 VAR.
In the example values listed above, the preceeding relate to listed Trigonomic Terms:
<OL TYPE=A>
[*] 4 Watts = "Sine" (Base of the Triangle),
[*] 3 VARs = "Cosine" (Opposite side of Triangle),
[*] 5 VAs = "Tangent" (Hypotenuse) </OL>
You can use this formula to find any single unknown value, as long as you have two known values.
Scott35
_________________________
Scott " 35 " Thompson Just Say NO To Green Eggs And Ham!

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