Genset load calc check please
Genset load calc check please
(OP)
I've got some resistive load bank (PF =1?) test results and am trying to estimate the flywheel engine horsepower, assuming a 90% efficiency for this old syncronous generator.
Gen specs: 600 kW, 750 kVA, 3 phase, 600 VAC
Test results: 537/537/538 A, 600.0 VAC
My calcs:
kVA = 1.732*600V*573.3A*1/1000 = 558 kVA
ekW = 558 ekW
eHP = 558*1.341 = 749 eHP
BHP = 749/0.9 = 832 BHP @ flywheel.
Does this sound right? I'm confusing myself on this one mostly due to power factors.
Brian Bobyk - Hoerbiger Canada
Gen specs: 600 kW, 750 kVA, 3 phase, 600 VAC
Test results: 537/537/538 A, 600.0 VAC
My calcs:
kVA = 1.732*600V*573.3A*1/1000 = 558 kVA
ekW = 558 ekW
eHP = 558*1.341 = 749 eHP
BHP = 749/0.9 = 832 BHP @ flywheel.
Does this sound right? I'm confusing myself on this one mostly due to power factors.
Brian Bobyk - Hoerbiger Canada





RE: Genset load calc check please
RE: Genset load calc check please
Alan
----
"It's always fun to do the impossible." - Walt Disney
RE: Genset load calc check please
KW = Sqrt(3) x Voltage X Current X PF/1000
KVA = Sqrt (3) x Voltage X Current/1000
Since PF = 1 for pure resistive load, KW = KVA (only in this purely resistive case)
90% efficiency for generator is reasonable.
RE: Genset load calc check please
Brian Bobyk - Hoerbiger Canada