Generac QT04842KNAX Portable Generator User Manual


  Open as PDF
of 4
 
OPERATING DATA
QT048
RATING: Allthreephaseunitsareratedat0.8powerfactor.Allsinglephaseunitsareratedat1.0powerfactor.STANDBYRATING:Standbyratings
applytoinstallationsservedbyareliableutilitysource.Thestandbyratingisapplicabletovaryingloadsforthedurationofapoweroutage.Thereis
nooverloadcapabilityforthisrating.RatingsareinaccordancewithISO-3046-1,BS5514,andDIN6271.Maximumwattageandcurrentaresubject
toandlimitedbysuchfactorsasfuelBtucontent,ambienttemperature,altitude,enginepowerandcondition.Designandspecificationsaresubject
tochangewithoutnotice.
KWratingisbasedonLPGFuelandmayderatewithnaturalgas.
QT048
KW RATING
48
ENGINE SIZE
4.2Liter
GENERATOR OUTPUT VOLTAGE/KW - 60Hz kW - LP Amps kW - NG Amps CB Size
120/240V,1-phase,1.0pf 48 200 46 192 200
120/208V,3-phase,0.8pf 48 166 46 160 175
120/240V,3-phase,0.8pf 48 144 46 138 150
277/480V,3-phase,0.8pf 48 72 46 69 80
GENERATOR LOCKED ROTOR KVA
AVAILABLE @ VOLTAGE DIP OF 35%
Singlephaseor2083-phase 100
480V3-phase 110
ENGINE FUEL CONSUMPTION (Natural Gas) (Propane) Natural Gas Propane
(ft
3
/hr.) (gal/hr.) cuft/hr
Exercisecycle 88 0.94 34.4
25%ofratedload 205 2.23 81
50%ofratedload 370 4.03 147
75%ofratedload 516 5.62 204
100%ofratedload 661 7.20 261
ENGINE COOLING
Airflow
(inlet air including alternator and combustion air)
ft
3
/min. 2,460
Systemcoolantcapacity USgal. 3.0
Heatrejectiontocoolant BTU/hr. 165,000
Max.operatingairtemp.onradiator °C(°F) 60(150)
Max.ambienttemperature °C(°F) 50(140)
COMBUSTION AIR REQUIREMENTS
Flowatratedpower60Hz cfm 235
SOUND EMISSIONS IN DBA
Exercisingat7meters 60
Normaloperationat7meters 65
EXHAUST
Exhaustflowatratedoutput60Hz cfm 395
Exhausttemp.atmuffleroutlet °F 1100
ENGINE PARAMETERS
RatedsynchronousRPM 60Hz 1800
HPatratedKW 60Hz 75
POWER ADJUSTMENT FOR AMBIENT CONDITIONS
TemperatureDeration
3%forevery10°Cabove-°C 25
1.65%forevery10°Fabove-°F 77
AltitudeDeration
1%forevery100mabove-m 183
3%forevery1000ft.above-ft. 600
 previous