needs urgent help in selection of genset

[vipin]

Hi friends
i have some difficult comments for my selection of generator for one of my client..
i ll give the details here
i have a main panel at 462kw to be fed with a generator
connected load = 462kw
diversified load = 371kw (made from detailed calculation of all the feeders)
spare required= 20 % of connected load =92.4kw
total anticipated load on genset = diversified load + spare =371+92.4= 463.4kw
here all the equipments are kitchen equipments and there is no heavy motors involved in the project.....we can take almost 85 to 90% pf.

i ve selected a 725kva prime generator, but my main contractor says it is insufficient as the genset can be selected based on 70% of its capacity due to ios regulations. can some body help me to justify this, coz we ve already purchased the 725kva x 2 nos for duty standby operation..... the standby rating of the same genset is 800kva .

 

[pactrol]

Hi

Thats one big generator
are you sure you need all that power ie your 470 kw is that total load what is the
phase loading & what about diversity ie equipment not running at the same time ?

if 470kw is total load then a 600kva generator would give you
600 kva / 400v /root3 /= 866 amps per ph

 

[mechelec]

Contact one of the generator companies as they will have the experiance to size the correct one for your application.

 

[bugsy]

I suggest you contact the manufacturer of the gen set you have bought give him the loadings and ask him to calc it ,
that way any problems you may have with the M/C or client can be refered back to the manufacturer