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WhisperWatt DCA400SSI Diesel generator


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Prime Rating: 320 kW (400 kVA)
Standby Rating: 352 kW (440 kVA)
60 Hertz

WhisperWatt DCA400SSI drawing



Performance Data
Prime Rating 320 kW 400 kVA
Standby Rating 352 kW 440 kVA
Generator RPM 1800
Voltage - Three Phase 208, 220, 240, 416, 440, 460, 480V Reconnectable
Voltage - Single Phase 120, 127, 139, 240, 254, 277V Adjustable
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
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.) 74 dB(A)
Notice: Features and equipment specifications are subject to change without notice.



WhisperWatt DCA400SSI drawing



Standard Features:


Optional Generator 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 352 KW (440 KVA)
Prime Output 320 KW (400 KVA)
Generator RPM 1800
Voltage - 3Ø 208, 220, 240, 416, 440, 480V Reconnectable
Voltage - 1Ø 120, 127, 139, 240, 254, 277V Adjustable
Armature Connection Star with neutral
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) 74
Dry Weight 11,642 lbs. (5,280 kg)
Wet Weight 12,877 lbs. (5,840 kg)


Engine Specifications
Make Isuzu
Model 6WG1X
Emissions EPA Tier 3 Certified
Starting system Electric
Design 4-cycle, water cooled, Direct injection, Turbocharged, air to air intercooled
Displacement 15681cc
No. cylinders 6
Bore 147 mm
Stroke 154 mm
Gross Engine Power Output 532 hp (402.7kW)
BMEP 236 psi (1970 kPa)
Piston Speed 1819 ft./min.
Compression Ratio 16:1
Engine Speed 1800 rpm
Overspeed Limit 2040 rpm
Oil Capacity 14.4 gal (55 L)
Battery 12V 190Ah X 2 (24V Systems)


Fuel System
Fuel Tank Capacity 129 gal (490 L)
Diesel Fuel at % of Load gal/hr (L/hr)
100% 23.4 (89)
75% 18.5 (70.2)
50% 13.3 (50.6)
25% 8.2 (31.2)


Rated Voltage Max Amps
1Ø 120V 888.9 (4 wire)
1Ø 240V 444.4 (4 wire)
3Ø 240V 962.3 Amps
3Ø 480V 481.1 Amps
Main Line Circuit Breaker Rating 1000 Amps
Over Current Releay Trip Set Point 480 Amps



Isuzu Engine:
12 months from date of purchase with unlimited hours or 24 months
from date of purchase with 2000 hours (whichever comes first).
24 months from date of purchase or 2000 hours (whichever occurs first).
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 DCA400SSI Spec Sheet


DCA400SSI operators manual