In Reply to: please give me more information posted by Herbert Huber on 02/10/03 at 11:54 AM:
I am vivek,
Here some guide lines for your questions.
Suppose you think about a invertor 2000va,
va is volt amps.
by meaning of power
you have to calculate the power factor.
p=va x P.F
p.f= power factor. if the output load is inductive or capacitive or resistive loads then it will be with p.f
standard power factor is take as a example .8 pf
power= 2000 x .8
.8 only for inductive and capacitive output loads
in case of resistive loads and resisters are unity factor loads
power= 2000 x 1(only for resistive loads here the current and voltage flowing on same direction)
The voltage which can able to drive some devices is called input voltage.example
2000 va inverter is need minimum 230v ac to operate .so the inverter drawing 230v ac from the source.
the same inverter which is delevring 2000va in the outoutside when only the output voltage level of 220v ac.
if you want more doubts pls clearluy mention your doubts