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WhisperWatt DCA150SSI Diesel generator


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Prime Rating: 120 kW (150 kVA)
Standby Rating: 132 kW (165 kVA)
60 Hertz

WhisperWatt DCA150SSI drawing



Performance Data
Prime Rating 120 kW 150 kVA
Standby Rating 132 kW 165 kVA
Generator RPM 1800
Voltage - Three Phase 208, 220, 240, 416, 440, 480V Switchable
Voltage - Single Phase 120, 127, 139, 240, 254, 277V Switchable
Generator Design Revolving field, Self-ventilated, Drip-proof, Single bearing
Voltage Regulation (No Load to Full Load) ±0.5 %
Power Factor 0.8
Armature Connection Star with Neutral/ Zig Zag
Excitation Brushless with AVR
No. Poles 4-pole
Frequency 60 Hz
Frequency Regulation (steady state load) ±0.25 %
Sound Level (Full Load at 23 ft.) 69 dB(A)
Notice: Features and equipment specifications are subject to change without notice.


WhisperWatt DCA150SSI drawing


Standard Features:


Optional Generator Features:


Optional Control Features:


Optional Fuel Cell Features:


Generator Specifications
Design Revolving field, self ventilated, drip-proof, single bearing
Number of Poles 4
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 ±0.5%
Power Factor 0.8
Frequency 60 Hz

Frequency Regulation:

No Load to Full Load

Isochronous under varying load from
no load to 100% 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) 69
Dry Weight 5,711 lbs. (2,590 kg)
Wet Weight 6,417 lbs. (2,910 kg)


Engine Specifications
Make Isuzu
Model 6HK1X
Emissions EPA Tier 3 Certified
Starting system Electric
Design 4-cycle, water cooled, Direct injection, Turbocharged, air-to-air intercooled
Displacement 7,790cc
No. cylinders 6
Bore 115 mm
Stroke 125 mm
Gross Engine Power Output 240 hp (146kW)
BMEP 173 psi (1190 kPa)
Piston Speed 1480 ft./min.
Compression Ratio 17.5:1
Engine Speed 1800 rpm
Overspeed Limit 2070 rpm
Oil Capacity 10.6 gal (40 L)
Battery 12V 100Ah x 2 (24V systems)


Fuel System
Fuel Tank Capacity 74 gal (280.0 L)
Diesel Fuel at % of Load gal/hr (L/hr)
100% 8.9 (33.6)
75% 7.5 (28.3)
50% 5.0 (19.0)
25% 3.1 (11.9)


Rated Voltage Max Amps
1Ø 120V 333.3 (4 wire)
1Ø 240V 166.7 (4 wire)
3Ø 240V 361 Amps
3Ø 480V 180 Amps
Main Line Circuit Breaker Rating 400 Amps
Over Current Releay Trip Set Point 180 Amps



Isuzu Engine:
12 months from date of purchase with unlimited hours or 24 months
from date of purchase with 2000 hours (whichever occurs first).
24 months from date of purchase or 2000 hours (whichever occurs
12 months excluding normal wear items.



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.



WhisperWatt DCA150SSI Spec Sheet


DCA150SSI operators manual