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WhisperWatt DCA70SSI Diesel generator

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Prime Rating — 56 kW (70 kVA)
Standby Rating — 62 kW (77 kVA)
Three-Phase, 60 Hertz, 0.8 PF

WhisperWatt DCA70SSI drawing

Performance Data
Prime Rating	56 kW	70 kVA
Standby Rating	62 kW	77 kVA
Generator RPM	1800
Voltage - Three Phase	208, 220, 240, 416, 440, 460, 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.)	68 dB(A)

Notice: Features and equipment specifications are subject to change without notice.

WhisperWatt DCA70SSI drawing

Standard Features:

Heavy duty, 4-cycle, direct injection, diesel engine provides
maximum reliability.
Brushless alternator reduces service and maintenance
requirements and meets temperature rise standards for Class
H insulation systems.
Open delta excitation design provides virtually unlimited
excitation for maximum motor starting capability.
Automatic voltage regulator (AVR) provides precise regulation.
Electronic Governor Control (Crystal Sync) — maintains
frequency to within ±0.25% from no load to full load.
Full load acceptance of standby nameplate rating in one step
(NFPA 110, para 5-13.2.6).
Sound attenuated, weather resistant, steel housing provides
operation at 65 dB(A) at 23 feet. Fully lockable enclosure
allows safe unattended operation.
Internal fuel tank with direct reading of fuel gauge.
Seven stage powder coat paint system provides durability
and weather protection.
Fuel/water separator removes condensation from fuel for
extended engine life. Panel mounted alarm light included.
Complete engine analog instrumentation includes DC
ammeter, oil pressure gauge, water temp. gauge, fuel level
gauge, tachometer/hour meter, preheat indicator, emergency
shutdown monitors.
Automatic start/stop control — automatically starts the
generator set during a commercial power failure when used
in conjunction with a transfer switch.
Complete generator analog instrumentation includes voltage
regulator control, ammeter phase selector switch, voltmeter
phase selector switch, AC voltmeter, AC ammeter, frequency
meter, panel light, and circuit breaker.
Automatic safety shutdown system monitors the water
temperature, engine oil pressure, overspeed and overcrank.
Warning lights indicate abnormal conditions.
Complete power panel. Fully covered; three-phase terminals
and single phase receptacles allow fast and convenient
hookup for most applications including temporary power
boxes, tools and lighting equipment. The GFCI receptacles
are NEMA 5-20, and the auxilillary outputs use CS6369 twistlock
receptacles.
Simultaneous single and three phase power.
Voltage selector switch offers the operator a wide range of
voltages that are manually selectable. Fine tuning of the
output voltage can be accomplished by adjusting the voltage
regulator control knob to obtain the desired voltage.
EPA emissions certified - Interim Tier 3 emissions compliant.

Optional Generator Features:

Battery Charger — provides fully automatic and selfadjusting
charging to the generator's battery system.
Jacket Water Heater — for easy starting in cold weather
climates.
Special Batteries — long life batteries provide extra engine
cranking power.
Low Coolant Level Shutdown — provides protection
from critically low coolant levels. Includes control panel
warning light.
Spring Isolaters — provides extra vibration protection for
standby applications.
Trailer Mounted Package — meets National Highway
Traffic Safety Administration (NHTSA) regulations. Trailer is
equipped with electronic or surge brakes with double or triple
axle confi guration.

Optional Control Features:

Emergency Stop Switch.
Audible Alarm — alerts operator of abnormal conditions.

Optional Fuel Cell Features:

Trailer fuel tank — a second fuel cell located in the trailer
allows for extended run time.
Subbase fuel cells (single wall) — Additional fuel cell for
extended runtime operation.
❑ 12 hours of minimum run time.
❑ 24 hours of minimum run time.
Subbase fuel cells (double wall) — Additional fuel cell for
extended runtime operation. Contains a leak sensor, low
fuel level switch, and a secondary containment tank. UL142
listed.
❑ 12 hours of minimum run time.
❑ 24 hours of minimum run time.

Generator Specifications
Design	Revolving field, self-ventilated, drip-proof, single bearing
Armature Connection	Star w/ Neutral	Zig Zag
Phase	3	Single
Standby Output	62 KW (77 KVA)	44 KW
Prime Output	56 KW (70 KVA)	40 KW
3Ø Voltage Voltage Selector Switch at 3Ø 240/139	208Y/120, 220Y/127, 240Y/139	N/A
3Ø Voltage Voltage Selector Switch at 3Ø 480/277	416Y/240, 440Y/254, 480Y/277	N/A
1Ø Voltage Voltage Selector Switch at 1Ø 240/120	N/A	240/120
Power Factor	0.8	1.0
Voltage Regulation	±0.5%
Generator RPM	1800
Frequency	60 Hz
No. of Poles	4
Excitation	Brushless with AVR
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 H
Sound Level dB(A)	68

Engine Specifications
Make	Isuzu
Model	BJ-4JJ1X
Emissions	EPA Interim Tier 3 Certified
Starting system	Electric
Design	4-cycle, water cooled, Direct injection, turbocharged
Displacement	2,999cc
No. cylinders	4
Bore	95.4 mm
Stroke	104.9 mm
Gross Engine Power Output	97.9 hp (50kW)
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	39.6 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)

Amperage
Rated Voltage	Max Amps
1Ø 120V	155.4 (4 wire) 168Ax2 (Zigzag)
1Ø 240V	77.8 (4 wire) 168A (Zigzag)
3Ø 240V	168 Amps
3Ø 480V	84 Amps
Main Line Circuit Breaker Rating	175 Amps
Over Current Releay Trip Set Point	84 Amps

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.

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 DCA70SSI Spec Sheet

DCA70SSI Operators manual

Hardy Diesel Generators

For questions or to order please call: 1-800-341-7027

WhisperWatt DCA70SSI Diesel generator

Warranty