Multiquip DCA125USI Generator Specifications, Fuel System, Cooling System, Exhaust System

DCA125USI

Ultra-Silent Series

Specifications

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	±0.5%
(No load to full load)
Power Factor	0.8
Frequency			60 Hz
Frequency Regulation:	Isochronous under varying loads from
No Load to Full Load			no load to 100% rated load
Frequency Regulation:	±0.25% of mean value for constant loads
Steady State			from no load to full load
Insulation			Class F
Sound Level dB(A)	65
Full load at 23 feet
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
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
DCA125USI Rev 2

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)

Air

Combustion Air	297 cfm (8.4 m3/min)
Maximum Air Cleaner Restriction	25.0 in H2O (6.25 kPa)
Alternator Cooling Air	1352 cfm (38.3 m3/min)
Radiator Cooling Air	2944 cfm (83 m3/min)

Exhaust System

Gas Flow (full load)	738 cfm (20.9 m3/min)
Gas Temperature	986°F (530°C)
Maximum Back Pressure	53.2 in/H2O (13.3 kPa)

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

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.

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.