Re: electrical question

Spir Georges GHALI

ANSARI said:

I Have total load current 20amps in each phase i have 3phase cunnection i want to instal a generator so will u advise me what should be the capicty of generator.

Dear Mr. ANSARI ;


to be able to calculate the Generator's power, we should know :

– Rhe Voltage's value between 2 phases.

once knowing, we apply the following formula :

S = 1.73 x U x I

where :

     – S : generator's Power in ” VA “

     – U : voltage between 2 phases

     – I : line's current

but after calculation we should add at least 20-25 %, because the bigest effeicency for a generator done at 75-80% of his power.