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WhisperWatt DCA300SSK Diesel generator


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Prime Rating: 240 kW (300kVA)
Standby Rating: 264 kW (330 kVA)
60 Hertz

WhisperWatt DCA300SSX drawing



Performance Data
Prime Rating 240 kW 300 kVA
Standby Rating 264 kW 330 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 Star with Neutral
Armature Connection Brushless with AVR
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.) 72 dB(A)
Notice: Features and equipment specifications are subject to change without notice.



WhisperWatt DCA300SSX 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 264 KW (330 KVA)
Prime Output 240 KW (300 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) 72
Dry Weight 10,165 lbs. (4,610 kg)
Wet Weight 11,356 lbs. (5,150 kg)


Engine Specifications
Make Komatsu
Model SAA6D125E-5
Emissions EPA Tier 3 Certified
Starting system Electric
Design 4-cycle, water cooled, Direct injection, Turbocharged, air-to-air intercooled
Displacement 11044cc
No. cylinders 6
Bore 125 mm
Stroke 150 mm
Gross Engine Power Output 420 hp (313kW)
BMEP 238 psi (1640 kPa)
Piston Speed 1772 ft./min.
Compression Ratio 16.7:1
Engine Speed 1800 rpm
Overspeed Limit 2100 rpm
Oil Capacity 16.6gal (63 L)
Battery 150Ah X 2 (24V Systems)


Fuel System
Fuel Tank Capacity 129 gal (490 L)
Diesel Fuel at % of Load gal/hr (L/hr)
100% 16.7 (63.1)
75% 12.4 (46.8)
50% 8.8 (33.5)
25% 5.2 (19.8)


Rated Voltage Max Amps
1Ø 120V 666.7 (4 wire)
1Ø 240V 333.3 (4 wire)
3Ø 240V 722 Amps
3Ø 480V 361 Amps
Main Line Circuit Breaker Rating 800 Amps
Over Current Releay Trip Set Point 360 Amps



Komatsu Engine:
12 months from date of purchase or 1000 hours (whichever occurs 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 DCA300SSK Spec Sheet


DCA300SSK operators manual