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Subject: Re: please give me more information

Date: 06/14/03 at 7:59 AM
Posted by: vivekananda rajah
E-mail: vivek_raja_26@yahoo.com
Message Posted:

In Reply to: please give me more information posted by Herbert Huber on 02/10/03 at 11:54 AM:

Hi,
I am vivek,

Here some guide lines for your questions.

output power

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

power=1600.
.8 only for inductive and capacitive output loads

in case of resistive loads and resisters are unity factor loads

so
power= 2000 x 1(only for resistive loads here the current and voltage flowing on same direction)

Input voltage.

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.

output voltage.

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

vivek



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