DCA125USI
Ultra-Silent Series
Specifications
Cooling System
Fan Load
4.4 hp (3.3 kW)
Coolant Capacity (with radiator)
5.2 gal (19.7 L)
Coolant Flow Rate (per minute)
48 gal (180 L)
Heat Rejection to Coolant (per minute)
3500 Btu (3.7 MJ)
Heat Rejection from Engine (per minute)
1040 Btu (1.1 MJ)
Maximum Coolant Friction Head
6.5 psi (45.0 kPa)
Maximum Coolant Static Head
29.5 ft (9.0 m)
Ambient Temperature Rating
104°F (40°C)
Generator Specifications
Design
Revolving field, Self-ventilated
Drip-proof, Single bearing
No. of Poles
4-pole
Excitation
Brushless with AVR
Standby Output
110 KW (137 KVA)
Prime Output
100 KW (125 KVA)
Generator RPM
1800
Voltage — 3Ø
208, 220, 240, 416, 440, 480V Switchable
Voltage — 1Ø
120, 127, 139, 240, 254, 277V Switchable
Armature Connection
Star with neutral / Zig Zag
Voltage Regulation
(No load to full load)
±0.5%
Power Factor
0.8
Frequency
60 Hz
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 F
Sound Level dB(A)
Full load at 23 feet
65
Fuel System
Recommended Fuel
ASTM-D975-No.1 and No. 2-D
Maximum Fuel Flow (per hour)
19.0 gal (71.0 L)
Maximum Inlet Restriction (Hg)
8.9 in (225 mm)
Fuel Tank Capacity
169 gal (640 L)
Fuel Consumption
gph
lph
at full load
7.3
27.6
at 3/4 load
5.7
21.7
at 1/2 load
4.0
15.1
at 1/4 load
2.4
9.1
Amperage
Rated Voltage
Maximum Amps
1Ø 120 Volt
277.8 Amps (4 wire)
1Ø 240 Volt
138.9 Amps (4 wire)
3Ø 240 Volt
300 Amps
3Ø 480 Volt
150 Amps
Main Line Circuit Breaker Rating
300 Amps
Over Current Relay Trip Set Point
152 Amps
Engine Specifications
Make/Model
Isuzu / 4HK1X
Emissions
EPA Tier 3 Certified
Starting System
Electric
Design
4-cycle, watercooled, direct injection,
turbocharged, air to air intercooled
Displacement
5193 cc
No. cylinders
4
Bore x Stroke (mm)
115 x 125
Gross Engine Power Output
170.3 hp (127 kW)
HP at Rated Speed
152.3 hp (113.6 kW)
BMEP
212 psi (1458 kPa)
Piston Speed
1480 ft/min (7.50 m/s)
Compression Ratio
17.5 : 1
Engine Speed
1800 rpm
Overspeed Limit
2070 rpm
Oil capacity gallons (liters)
6.1 (23.4)
Battery
12V 128 Ah x 1
Air
Combustion Air
297 cfm (8.4 m
3
/min)
Maximum Air Cleaner Restriction
25.0 in H
2
O (6.25 kPa)
Alternator Cooling Air
1352 cfm (38.3 m
3
/min)
Radiator Cooling Air
2944 cfm (83 m
3
/min)
Exhaust System
Gas Flow (full load)
738 cfm (20.9 m
3
/min)
Gas Temperature
986°F (530°C)
Maximum Back Pressure
53.2 in/H
2
O (13.3 kPa)
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.
Warranty*
Isuzu Engine
12 months from date of purchase with unlimited hours or 24 months
from date of purchase with 2000 hours (whichever comes first).
Generator
24 months from date of purchase or 2000 hours (whichever occurs
first).
Trailer
12 months excluding normal wear items.
*Refer to the express written, one-year limited warranty sheet for additional
information.
DCA125USI Rev 2
