DCA70SSI
WhisperWatt Series
WhisperWatt™ 70
Prime Rating: 56 kW (70 kVA)
Standby Rating: 59 kW (74 kVA)
60 Hertz
WhisperWatt™ Standard Features
■ Heavy duty, 4-cycle, direct injection, turbocharged
diesel engine provides maximum reliability.
■ Brushless alternator reduces service and maintenance
requirements and meets temperature rise standards for
Class F insulation systems.
■ Open delta alternator 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 ultra-silent operation at 65 dB(A) at 23 feet. Fully
lockable enclosure allows safe unattended operation.
■ Integrated fuel tank with direct reading fuel gauges are
standard.
■ Seven-stage powder coat paint provides durability and
weather protection.
■ EPA-MOH emissions certified - Tier 2 emissions compliant.
■ Complete engine analog instrumentation includes DC
ammeter, oil pressure gauge, water temp. gauge, fuel level
gauge, tachometer/hour meter, preheat indicator, and
emergency shutdown monitors.
■ 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.
■ Automatic start / stop control — automatically starts the
generator set during a commercial power failure when used
in conjunction with a transfer switch.
■ 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. All are NEMA
standard.
■ Simultaneous single and three phase power.
■ Voltage selector switch allows easy to change voltages as
your applications require.
DCA70SSI
WhisperWatt Series
Specifications
Cooling
Generator
Design
No. of Poles
Excitation
Standby Output
Prime Output
Generator RPM
Voltage — 3Ø
Voltage — 1Ø
Armature Connection
Voltage Regulation
(No load to full load)
Power Factor
Frequency
Frequency Regulation:
No Load to Full Load
Frequency Regulation:
Steady State
Insulation
Sound Level dB(A)
Full load at 23 feet
Revolving field, self-ventilated,
drip-proof, single bearing
4-pole
Brushless with AVR
59 KW (74 KVA)
56 KW (70 KVA)
1800
208, 220, 240, 416, 440, 480V Switchable
120, 127, 139, 240, 254, 277V Switchable
Star with neutral / Zig Zag
Fan Load
Coolant Capacity (with radiator)
Coolant Flow Rate (per minute)
Heat Rejection to Coolant (per minute)
Heat Radiated to Room (per minute)
Maximum Coolant Friction Head
Maximum Coolant Static Head
Ambient Temperature Rating
Air
±1.0%
0.8
60 Hz
Isochronous under varying loads from no
load to 100% rated load
±0.25% of mean value for constant loads
from no load to full load
Class F
3.0 HP (2.2 KW)
3.43 gallons (13.0 liters)
44 gallons (168 liters)
2502 Btu (2.64 MJ)
389 Btu (0.41 MJ)
7.6 psi (52.3 kPa)
17 feet (5.3 meters)
104°F (40°C)
Combustion Air
194 cfm (5.5m3/min)
Maximum Air cleaner Restriction
29.5 in. H20 (7.36 kPa)
Alternator Cooling Air
911 cfm (25.8m3/min)
Radiator Cooling Air
3707 cfm (105m3/min)
Minimum Air Opening to Room
6.61 sq.ft (0.614 sq.m)
Minimum Discharge Opening
2.32 sq.ft (0.22 sq.m)
65
Exhaust
Make / Model
Emissions
Starting System
Isuzu/FF-4BG1T
EPA Tier 2 Certified
Electric
4-cycle Water Cooled
Direct injection Turbocharged
264.2 in3 (4329 cc)
4
105mm x 125mm
98.6 bhp (73.5 KW)
149 psi (1029 kPa)
1476 ft/min (7.5 m/s)
18.0:1
1800 rpm
2100 rpm
3.49 gal. (13.2L)
12V 80Ah x 1
Design
Displacement
No. cylinders
Bore x Stroke
Gross Engine Power Output
BMEP
Piston Speed
Compression Ratio
Engine Speed
Overspeed Limit
Oil capacity
Battery
Fuel
Maximum Fuel Flow (per hour)
Maximum Inlet Restriction (Hg)
Fuel Tank Capacity
Fuel Consumption
At full load gph (lph)
At 3/4 load gph (lph)
At 1/2 load gph (lph)
At 1/4 load gph (lph)
607 cfm (17.2 m3/min)
Gas Flow (full load)
Engine
30.4 gallons (115 liters)
2.39 in. (60.8 mm)
39.6 gallons (150 liters)
gph
lph
4.5
17.0
3.8
14.3
2.4
9.0
1.5
5.6
Gas Temperature
993°F (534°C)
Maximum Back Pressure
53.5 in. H2O (13.3 kPa)
Maximum Amps
Rated Voltage
1Ø 120 Volt
1Ø 240 Volt
3Ø 240 Volt
3Ø 480 Volt
Maximum Amps
155.5 amps (4 wire)
77.8 amps (4 wire)
168 amps
84 amps
Warranty*
Isuzu Engine
12 months from date of purchase or 1800 hours (whichever occurs first).
Generator
12 months from date of purchase or 1000 hours (whichever occurs first).
*Refer to the express written, one-year limited warranty sheet for additional information.
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.
DCA70SSI
WhisperWatt Series
Optional Control Features
❑ Emergency Stop Switch.
❑ Audible Alarm — alerts operator of abnormal conditions.
Optional Fuel Cell Features
Optional Generator Features
❑ Battery charger — provides fully automatic and selfadjusting charging to the generator's battery system.
❑ Low coolant level shutdown — provides protection from
critically low coolant levels. Includes control panel warning
light.
❑ Jacket water heater — for easy starting in cold weather
climates.
❑ Special batteries — long life batteries provide extra engine
cranking power.
❑ Spring Isolaters — provides extra vibration protection for
standby applications.
❑ Trailer mounted package — highway legal trailer with
electric or surge brakes with tandem axle configuration. Extra
capacity fuel tanks are also available.
❑ 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.
Optional Distribution Devices
❑ CamLok™ connectors
❑ Pin & sleeve connectors — Appleton, Crouse-Hinds
❑ AC output cable — Type G, Type W
DCA70SSI
WhisperWatt Series
Dimensions
Weight
Dry Weight
3087 lbs. / 1400 kg
Wet Weight
3425 lbs. / 1553 kg
Units mfg. by Denyo Mfg. Corp.
Your MQ Power dealer is:
MQ POWER
POST OFFICE BOX 6254
CARSON, CA 90749
310-537-3700 • 800-421-1244
FAX: 310-632-2656
E-MAIL: mq@multiquip.com
WWW: www.mqpower.com
© COPYRIGHT 2006, MULTIQUIP INC.
Rev. 4 (1-06)
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