Generator Sizing
Generator Sizing
(OP)
Dears,
I am going to size a generator for a MCC of 350KW max demand.Can some one provide any procedure/code of practice to calculate the generator size
I am going to size a generator for a MCC of 350KW max demand.Can some one provide any procedure/code of practice to calculate the generator size





RE: Generator Sizing
One important factor will the largest motor that you will be starting and its inrush current. Also, what level of voltage drop can you live with on motor starting.
dpc
RE: Generator Sizing
RE: Generator Sizing
Mark Empson
http://www.lmphotonics.com
RE: Generator Sizing
http://www.adamselectric.com/onan/gensize.html
dpc
RE: Generator Sizing
For example, a 400 kVA genset can start a 200 kW motor. Once the motor is running, only 200 kVA is spare, so a 100 kW motor is the largest motor that can then be started. If you started the 100 kW motor, you would not be able to start the 200 kW afterwards as there is only 300 kVA spare. Rough, but it works.
What is important though is to properly sequence motor starting. Where possible, get the big motors away first.
RE: Generator Sizing
I think diversity for MCC,s is 0,6 of MAX. Demand and spare capacity is 1.2