Hey all,
I've got 2 questions:
1. How do you calculate Wattage?
2. What does this mean on a UPS: 1000VA
Thanx!
2006-10-03 00:45:54 · 3 answers · asked by strebbor 1 in Science & Mathematics ➔ Engineering
Wattage = Volts (V) times Amps (A)
On a UPS that is rated for 1000VA, you will have 1000w.
The important thing, however, is how long you will have 1000 watts at your disposal. If it is one of those UPS's for a computer, I wouldnt be suprised if you would have at least 15 minutes of battery backup power.
2006-10-03 04:11:09 · answer #1 · answered by designer_brian 2 · 0⤊ 0⤋
Wattage= Voltage x Current x Power factor
=VA xPower factor
for a1000VA UPS if the load Power factor is.8 wattage is 800W
2006-10-03 08:12:21 · answer #2 · answered by nambu_fact 2 · 0⤊ 0⤋
1. Power in d.c. circuits is calculated by multiplying voltage by current, and is called watts, abbreviated to W.
In a.c. circuits the phase difference, if any, between the voltage and current must be taken into account in order to calculate the actual power in watts.
Simply multiplying voltage by current will give the "apparent power", expressed in volt-amperes (VA)
2. 1000VA means 1000 volt-amps.
Do a Google search for "volt-amperes" and "power factor."
2006-10-03 08:13:50 · answer #3 · answered by dmb06851 7 · 0⤊ 0⤋