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DCA150SSI
WhisperWatt
TM
Generator
Specifications
Cooling System
Fan Load 5.6 hp (4.2 kW)
Coolant Capacity (with radiator) 7.8 gal (29.5 L)
Coolant Flow Rate (per minute) 46 gal (173 L)
Heat Rejection to Coolant (per minute) 4248 Btu (4.48 MJ)
Heat Rejection from Engine (per minute) 1271 Btu (1.34 MJ)
Maximum Coolant Friction Head 9.7 psi (67 kPa)
Maximum Coolant Static Head 29.5 ft (9.0 m)
Ambient Temperature Rating 104°F (40°C)
Generator Specifications
Design
Revolving field, Self-ventilated
Drip-proof, Single bearing
No. of Poles 4-pole
Excitation Brushless with AVR
Standby Output 132 kW (165 kVA)
Prime Output 120 kW (150 kVA)
Generator RPM 1800
Voltage — 3Ø 208, 220, 240, 416, 440, 480V Switchable
Voltage — 1Ø 120, 127, 139, 240, 254, 277V Switchable
Armature Connection Star with neutral / Zig Zag
Voltage Regulation
(No load to full load)
±0.5%
Power Factor 0.8
Frequency 60 Hz
Frequency Regulation:
No Load to Full Load
Isochronous under varying loads from
no load to 100% rated load
Frequency Regulation:
Steady State
±0.25% of mean value for constant loads
from no load to full load
Insulation Class F
Sound Level dB(A)
Full load at 23 feet
69
Fuel System
Recommended Fuel ASTM-D975-No.1 and No. 2-D
Maximum Fuel Flow (per hour) 31.7 gal (120 L)
Maximum Inlet Restriction (Hg) 8.9 in. (225 mm)
Fuel Tank Capacity 74 gal (280 L)
Fuel Consumption
full load gph (lph) 8.9 (33.6)
75% load gph (lph) 7.5 (28.3)
50% load gph (lph) 5.0 (19.0)
25% load gph (lph) 3.1 (11.9)
Amperage
Rated Voltage Maximum Amps
1Ø 120 Volt 333.3 Amps (4 wire)
1Ø 240 Volt 166.7 Amps (4 wire)
3Ø 240 Volt 361 Amps
3Ø 480 Volt 180 Amps
Main Line Circuit Breaker Rating 400 Amps
Over Current Relay Trip Set Point 180 Amps
Engine Specifications
Make/Model Isuzu / 6HK1X
Emissions EPA Tier 3 Certified
Starting System Electric
Design
4-cycle, watercooled, direct injection,
turbocharged, air to air intercooled
Displacement 7790 cc
No. cylinders 6
Bore x Stroke 115 x 125 mm
Gross Engine Power Output 240 hp (179 kW)
BMEP 173 psi (1190 kPa)
Piston Speed 1480 ft ft/min (7.5 m/s)
Compression Ratio 17.5 : 1
Engine Speed 1800 rpm
Overspeed Limit 2070 rpm
Oil capacity 10.6 gal (40.0 L)
Battery 12V 100 Ah x 2 (24V systems)
Air
Combustion Air 364 cfm (10.3 m
3
/min)
Maximum Air Cleaner Restriction 25.0 in. H
2
O (6.25 kPa)
Alternator Cooling Air 1352 cfm (38.3 m
3
/min)
Radiator Cooling Air 7416 cfm (210 m
3
/min)
Exhaust System
Gas Flow (full load) 844 cfm (23.9 m3/min)
Gas Temperature 887°F (475°C)
Maximum Back Pressure 53.2 in H
2
O (13.3 kPa)
Generator is not intended for use in enclosed areas or where free flow of air is restricted.
Backfeed to a utility system can cause electrocution and/or property damage. Do not
connect to any building’s electrical system except through an approved device.
Specifications are subject to change without notice.
DCA150SSI Rev 0
Warranty*
Isuzu Engine
12 months from date of purchase with unlimited hours or 24 months
from date of purchase with 2000 hours (whichever occurs first).
Generator
24 months from date of purchase or 2000 hours (whichever occurs
first).
Trailer
12 months excluding normal wear items.
*Refer to the express written, one-year limited warranty sheet for additional
information.