How to calculator k.w,power factor,Cos sine,load?
Answer:
for easy calculation:
draw a right triangle on the first quadrant, whereby;
KW= true power , line of arrow going to the right horizontally.
KVAR= reactive power, from the tip of your KW arrow, draw a vertical line, 90° going up(if inductive load) or going down( if capacitive load), then
KVA= apparent power is your hypoteneuse,
formulae for computation:
you have an angle between horizontal side and hypoteneuse that we call theta,
sin theta= KVAR(line going up or going down)/KVA(hypoteneuse)
cos theta=PF(power factor)= KW(line horizontal)/KVA(hypoteneuse)
tan theta = sin theta/cos theta = KVAR/KW
note:
for inductive load- your KVAR will point up on the first quadrant.
for capacitive load your KVAR will point down on the fourth quadrant.(this is how we correct the power factor for adding a capacitive KVAR)
Power factor = P / S
1 kilowatt-hour is 3,600,000 joules or 3.6 megajoules.
Cos = 1/sec
there are 3 types of power,
1. Apparent power, KVA
2. true Power , KW
3. reactive power , KVAR
true power = apparent power x cosine(theta)
where theta is the ange difference between the voltage and current.
power factor = cosine(theta)
reactive power = apparent power x sine (theta)
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