How much power do I need
How much power do I need
(OP)
How much power do I need to start a 600 kW motor DOL. Is there a calcuation I can use to quickly determine this. Our electrical engineers will do actual calcs for the final design, but what I would like to do is a quick calc to understand, plus or minus 10%, what a generator would see as the starting load.





RE: How much power do I need
The calculation parameters used are:
1. Motor Locked-Rotor Amperes (LRA), e.g. 6xFLA (full load current)
2. Motor Starting Power Factor, e.g. 0.2
3. Motor Efficiency
Motor nameplate data or motor specification sheet data are supposed to be used.
NEC recommends to size the motor feeder for 1.25 x FLA which is good to verify for its validity to a specific application.
RE: How much power do I need
To all repected members:
Please feel free to comment, correct and improve on the FAQ when becomes available.
Thanks
RE: How much power do I need