Calculation for Generator sizing
The generator sizing is done based on the following conditions.
a) Load Calculate from continuous.
b) 10 % spare capacity for future loads.
A) Calculation of total load:
Total connected load as per load summary given below.
(Refer to generator sizing-load-summary details )
Minimum KW =237.22 KW
Maximum KVA =279.08
B) Calculation for Generator Capacity
Generator Capacity (In KVA) =Maximum Load X 1.1 = 306.99 KVA
(Considering 10% spare capacity for future loads)
So we select standard Emergency Generator rating of (KVA rated) =350 KVA
Rating = 350 KVA, 415V
415 volts 3 phase & Neutral, 50 HZ, 1500 rpm, PF -0.8, Solidity earthed
Note:– Rating Selected may change in case of substantial load variation.