Commercial Generator Set Standard Diesel SD 20 kW 60

Commercial Generator Set
TM
Standard Diesel Series
SD 20 kW 60 hz
Features and benefits
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Weight, size and sound level
Low vibration for smooth operation
Powerful 40 hp engine
User-friendly remote control option
Bottom mounted radiator for increased cooling
efficiency and smaller package size
Complete, integrated package for easy, low-cost
installation
Integrated muffler for added quietness and ease of
installation
Service and maintenance points easily accessible
(single-side)
Engine meets interim Tier IV emissions
Excellent motor starting capability
Bulkhead fuel and battery connections
Single side cooling air inlet, bottom cooling air
discharge
Field Effect Transistor (FET) control
Electronic governing for precise frequency control
Less than 4% total harmonic distortion at full load
SAE J1939 CANbus output
Engine oil cooler
Multiple fuel and battery block mounting locations
Weight: 890 lb (404 kg)
Size:
Length 48.9 in (1241 mm), width 23.6 in
(600 mm), height 27.9 in (708 mm)
Sound: 60 Hz (single phase) 81.9 dB(A) at 10 ft
(3 m) before installation, full load
Models and ratings
Model
20HDKAW-2008A
Fan
Hz
Scroll*
60
Watts
20000
Voltage
120/240
Amps
166.67/83.33
PF
1.0
Phase
1
Circuit breaker
2-pole, 85 A
- All 60 Hz models operate at 1800 r/min.
- Ratings apply up to 500 ft (152.4 m) altitude, 85 °F (29 °C) ambient with No. 2 diesel fuel.
- Maximum power capability decreases 3.5% for each 1000 ft (305 m) above 500 ft (153 m) and 1% for each 10 °F (5.5 °C) increase in
ambient temperature above 85 °F (29 °C).
*DC compartment cooling fan supplied with generator set.
©2008 Cummins Power Generation. All Rights Reserved. Cummins®, Onan®, the "C" logo, Performance you rely on.TM and Standard DieselTM
are servicemarks, trademarks and/or registered trademarks of Cummins Inc. Specifications are subject to change without notice
A-1538a (11/08)
Standard features
Engine details
• 4-cylinder diesel engine
• Brushless alternator
• Semi-focalized mounting system with 4-point vibration
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isolation
Bottom mount radiator
Drip catcher for oil filter replacement
Vertically mounted fuel filter, spin on cartridge
Replaceable element air cleaner
Multiple exhaust options
Exhaust air directional vane available
30 A battery charging DC alternator
Single point lifting bracket
Automatically timed glow plugs for easy starting
Base pan for drip control
Electric fuel pump (prime mode available)
Side air inlet, bottom air outlet
Spark arresting muffler
Bulkhead type connections for fuel and battery
Service and maintenance points easily accessible
(single-side)
Instant one-touch stop
Over voltage, low oil pressure, over temperature, over
speed and over load safeties
Vibration isolated control box
Oil drain and fill standard on service side
Model: Kubota V2403-M
Design: 4-cycle, liquid-cooled diesel engine
Cylinders: 4, inline vertical
Bore: 3.43 in (87.0 mm)
Stroke: 4.03 in (102.4 mm)
3
3
Displacement: 148.5 in (2434 cm )
Compression ratio: 24.3:1
Lube oil capacity: 2.51 gal (9.5 L)
Power (max): At 1800 r/min: 40 hp
Cooling system capacity: 1.95 Gal (7.4 L)
Starting system: Remote, 12 V
Fuel injection pump: Bosch
Combustion chamber: Spherical vortex three
combustion system
Motor starting: This genset is capable of delivering
50 kVA at rated voltage (120/240) for motor starting. To
find the kVA load requirement, multiply locked rotor
amps (LRA) x nominal voltage to get motor requirement
kVA. If this value is less than 50 kVA, this genset will
start that motor.
Typical fuel consumption
No. 2 diesel fuel, Gal/hr (L/hr)
20HDKAW
No load
Half load
Full load
0.54 (2.04)
1.12 (4.24)
1.95 (7.39)
Alternator details
Generator set details
Design: Cummins Onan brushless, revolving field, 4pole, rigidly coupled to engine and permanently aligned.
Insulation system: Class H per NEMA MG1,
Section IV, Part 32, Paragraph 32.6 and Table 32-3.
Exciter system: Brushless with 8-pole stator mounted
in endbell; rotating rectifier assembly is encapsulated for
protection from adverse environments.
Cooling: Direct drive centrifugal blower.
Control
- Unit mounted, drip-proof, vibration isolated console
- Electronic control with self diagnostics and generator
set protection and safety features included.
DC controls, 12 V system
- Start/stop/preheat/prime switch
- Remote connector for start/stop/preheat switch and
gauge package
- Hour meter
AC controls
- Electronic voltage regulator
Rotor: Dynamically balanced assembly; directly
coupled to engine by flexible drive disc; supported by
pre-lubricated, maintenance-free ball bearing.
Stator: Skewed stator and 2/3 pitch windings minimize
field heating and voltage harmonics; resin coated for
corrosion protection.
No load/full load
Voltage regulation:
Frequency regulation:
±1%
±0.5%
©2008 Cummins Power Generation. All Rights Reserved. Cummins®, Onan®, the "C" logo, Performance you rely on.TM and Standard DieselTM
are servicemarks, trademarks and/or registered trademarks of Cummins Inc. Specifications are subject to change without notice
A-1538a (11/08)
Constant load
±0.6%
±0.5%
Basic dimensions
Note: This outline drawing is provided for general reference only and is not intended for design or installation. For more information see
Operation and Installation manuals or obtain drawing A026K862 and wiring diagram from your distributor/dealer.
©2008 Cummins Power Generation. All Rights Reserved. Cummins®, Onan®, the "C" logo, Performance you rely on.TM and Standard DieselTM
are servicemarks, trademarks and/or registered trademarks of Cummins Inc. Specifications are subject to change without notice
A-1538a (11/08)
Options and accessories
• Remote control panel, switch only (P/N 300-4942)
• Remote control panel, switch and hour meter
(P/N 300-4943)
• Remote control panel, switch and DC voltmeter
Standards and testing
After sale support
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- Tested at extremes of temperature -20 F (-29 C) to
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120 F (49 C) for starting and operation
- Tested with commercial loads
- Tested in high humidity conditions
- Tested in salt spray conditions
- Tested in heavy airborne dust conditions
- Field test program
- This product meets U.S. interim EPA Tier IV and EU
Stage 3A for emissions
- This generator set was designed and manufactured in
facilities certified to ISO 9001
Warranty policy
The Cummins Onan limited warranty covers virtually
everything except routine maintenance for the first two
years you own your generator set, or the first 2,000 hours
of operation, whichever comes first. In addition, it
includes a free 90-day adjustment policy, which provides
that Cummins Inc. will make minor adjustments to your
new generator set during the first three months you own
it - free of charge!
!
WARNING:
(P/N 338-3490-01), 30 ft (P/N 338-3490-02)
• Remote harness pigtail at set (P/N 338-2102)
• Remote harness pigtail at panel (P/N 338-3573)
(P/N 300-4944)
• Exhaust down tube (P/N 0155-4976)
• Exhaust up tube (P/N A026D359)
Do not use this generator set on a boat.
Such use may violate U.S. Coast Guard
regulations, and can result in severe
personal injury or death from fire,
explosion, electrocution, or carbon
monoxide poisoning.
• Exhaust side tube (P/N A028W811)
• Cooling air outlet vane (P/N A028V210)
• Remote harness (for use with above panels), 10 ft
!
Largest distributor/dealer support network
Cummins Onan generator sets are supported by the
largest and best trained worldwide certified
distributor/dealer network in the industry. This network
of knowledgeable Cummins Onan distributor/dealers will
help you select and install the right generator set and
accessories to meet the requirements of your specific
application. This same network offers a complete
selection of commonly used generator set maintenance
parts, accessories and products plus manuals and
specification sheets. Plus, they can answer your
questions regarding proper operation, maintenance
schedules and more.
Manuals: Operation and installation manuals ship with
the generator set. To obtain additional copies or other
manuals for this model, see your Cummins Onan
distributor/dealer and request the following manual
numbers: Operation (A026M828), Installation
(A026M829), Parts (A026H757), Service (A028W414).
To easily locate the nearest Cummins Onan
distributor/dealer in your area, or for more information,
contact us at 1-800-888-6626 (or 763-574-5000), or visit
www.cumminsonan.com.
WARNING:
Back feed to a utility system can cause
electrocution and/or property damage.
Do not connect to any building electrical
except through an approved device or
after building main breaker is open.
Contact your distributor/dealer for more information
Cummins Power Generation
1400 73rd Ave. NE
Minneapolis, MN 55432 USA
Phone 1 763 574 5000
Toll-free 1 800 888 6626
Fax 1 763 574 5298
Email www.cumminsonan.com/contact
www.cumminsonan.com
©2008 Cummins Power Generation. All Rights Reserved. Cummins®, Onan®, the "C" logo, Performance you rely on.TM and Standard DieselTM
are servicemarks, trademarks and/or registered trademarks of Cummins Inc. Specifications are subject to change without notice
A-1538a (11/08)
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