electrical question

[ANSARI]

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.

[admin]

Capacity of the generator should be greater than total peak hour powerconsumption.

[عبده همد]

when we connected agenerator with the network that must be the same as  with 3phase event no that is not connected with

u must connected alone and I will put attension for this information to designe it with coming later thank u

[admin]

The capacity of generator must be the peak load current multiplied by its power factor and operating voltage then multiplied by square root of 3..The unit is watts.

[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.

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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.

 

Regards.

[Author]

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