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WhisperWatt DCA56SPX Diesel generator


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Prime Rating: 56 kW (56 kVA)
Standby Rating: 62 kW (62 kVA)
60 Hertz

WhisperWatt DCA56SPX drawing



Performance Data
Prime Rating 56 kW
Standby Rating 62 kW
Generator RPM 1800
Voltage - Single Phase 120/240 V
Generator Design Revolving field, Self-ventilated, Drip-proof, Single bearing
Voltage Regulation (No Load to Full Load) ±0.5%
Power Factor 1.0
Armature Connection Series
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.) 65 dB(A)
Notice: Features and equipment specifications are subject to change without notice.


WhisperWatt DCA56SPX drawing


Standard Features:


Optional Generator Features:


Optional Control Features:


Optional Fuel Cell Features:


Generator Specifications
Design Revolving field, self ventilated, drip-proof, single bearing
Excitation Brushless with AVR
Standby Output 62 KW
Prime Output 56 KW
Rated Voltage 120/240V
Power Factor 1.0
Voltage Regulation ±0.5%
Generator RPM 1800
Frequency 60 Hz
Number of Poles 4

Frequency Regulation:

Steady State

±0.25% of mean value for constant loads from no load to full load.
Insulation Class H
Sound Level dB(A) 68
Dry Weight 3,109 lbs. (1,410 kg)
Wet Weight 3,418 lbs. (1,550 kg)


Engine Specifications
Make Isuzu
Model BJ-4JJ1X
Emissions EPA Tier 3 Certified
Starting system Electric
Design 4-cycle, water cooled, Direct injection, Turbocharged, Charge air cooled
Displacement 2,999cc
No. cylinders 4
Bore 95.4 mm
Stroke 104.9 mm
Gross Engine Power Output 97.9 hp (73kW)
BMEP 204 psi (1409 kPa)
Piston Speed 1237 ft./min.
Compression Ratio 17.5:1
Engine Speed 1800 rpm
Overspeed Limit 2100 rpm
Oil Capacity 3.96 gal (15 L)
Battery 12V 72Ah x 1


Fuel System
Fuel Tank Capacity 40 gal (150.0 L)
Diesel Fuel at % of Load gal/hr (L/hr)
100% 4.1 (15.4)
75% 3.1 (11.9)
50% 2.2 (8.4)
25% 1.4 (5.2)


Rated Voltage Max Amps
120V 233 X 2
240V 233
Main Line Circuit Breaker Rating 250 Amps



Isuzu Engine:
12 months from date of purchase or 1800 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 DCA56SPX Spec Sheet


DCA56SPX operators manual