Guardian Technologies QT048 - Manual (Page 3)

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 V6
GENERATOR OUTPUT VOLTAGE/KW - 60Hz kW - LP Amps kW - NG Amps CB Size
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