Tuesday, June 12, 2007
Tips, simple explanations, and special sale items
Have you checked out the link to 'all-battery.com' in our right-hand margin?
Besides being an A1 supplier who ticks all the right boxes, they also send out informative newsletters/e-mails with tips, simple explanations [like the one quoted below], and also have special sales.
"How to convert VA to Watts and KVA to Kilowatts?
Since watts is volts times amps, what is VA? VA (or volt-amps) is also volts times amps, the concept however has been extended to AC power. For DC current
VA = Watts (DC current).
In AC if the volts and amps are in phase (for example a resistive load) then the equation is also
VA=Watts (resistive load)
where V is the RMS voltage and A the RMS amperage.
In AC the volts and amps are not always in phase (meaning that the peak of the voltage curve is does not happen at the peak of the current curve). So in AC, if the volts and amps are not precisely in phase you have to calculate the watts by multiplying the volts times the amps at each moment in time and take the average over time. The ratio between the VA (i.e. rms volts time rms amps) is called the power factor PF.
VA·PF = Watts (any load, including inductive loads)"
P.S. Don't forget to check out what is on sale at the moment... you'll find some real bargains!
Besides being an A1 supplier who ticks all the right boxes, they also send out informative newsletters/e-mails with tips, simple explanations [like the one quoted below], and also have special sales.
"How to convert VA to Watts and KVA to Kilowatts?
Since watts is volts times amps, what is VA? VA (or volt-amps) is also volts times amps, the concept however has been extended to AC power. For DC current
VA = Watts (DC current).
In AC if the volts and amps are in phase (for example a resistive load) then the equation is also
VA=Watts (resistive load)
where V is the RMS voltage and A the RMS amperage.
In AC the volts and amps are not always in phase (meaning that the peak of the voltage curve is does not happen at the peak of the current curve). So in AC, if the volts and amps are not precisely in phase you have to calculate the watts by multiplying the volts times the amps at each moment in time and take the average over time. The ratio between the VA (i.e. rms volts time rms amps) is called the power factor PF.
VA·PF = Watts (any load, including inductive loads)"
P.S. Don't forget to check out what is on sale at the moment... you'll find some real bargains!
Labels: A1 supplier, energy saving tips, sales, simple explanations
Subscribe to Posts [Atom]
