Finally, I have found the way to considering motor start effect on sizing of my diesel generator calculations, but after that the important topic is the correct derating factorcalculations and inserting in in the right position of final conclusion formula.
Here is about 2560 m above sea as...
Waross, your mentioned points and hints are really useful and it is obvious that you have a long term experience in around diesel generators and emergency systems, thank you so much for your answers and I appreciate your care and time
About the allowed voltage drop it could be about 20% just for emergency purposes then the voltage could reduce until 80% of nominal when we apply our diesel generator as emergency power supply
Here we have 5 set of 55 KW inductive motors running DOL, I want to choose a diesel generator to feed all of them and provide their starting parameters, our derating factor here is about 20%. How much would be the right size in KW approximately?
