Multiquip EGC500DD Application Data, Engine Specifications, Engine Electrical System, Derating

500kW Containerized Diesel Generator Set

APPLICATION DATA

Alternator Specifications
Make	Marathon Magna Max
Type	4-Pole, Rotating Field
Number of Leads	10 or 12
Generator Type	Rotating Field; PMG
Voltage Regulator	Solid State, Digital, Model DVR2000
Insulation	NEMA MG1-1.66
Material	Class H
Temperature Rise	Standby Rating: 125o C
	Prime Rating: 105o C
Bearing: Number, Type	Single, Sealed
Coupling	Flexible Disk
Amortisseur Windings	Full
Voltage Regulation (no load to full load)	2% Maximum
One Step Load Acceptance % of rating per	100
NFPA-110
Peak Motor Starting HP	250
Generator Efficiency at Full Load	93%
Phase Sequence	ABC (L1, L2, L3)
L-L Harmonic Max Total	3.5%
L-L Harmonic Max Single	2.5%
Voltage Dip Upon Full Load Application (1 Step)	20% for 1.6 seconds
Voltage Rise Upon Full Load Rejection (1 Step)	14% for 0.6 of a second

The EGC500DD Sound Attenuated Generator is configured for standard 60 Hz, 208V and 480V output. Special voltage outputs are available (special order).

Alternator Features

■All ratings tested per MIL-STD-705 as applicable.

■Generator protection for overload and short circuit.

■Generator is designed and built within NEMA, IEEE and ANSI standards for temperature rise.

■PMG exciter for superior regulation and response.

■Three phase sensing on regulator with EMI protection.

■Skewed rotor for smooth voltage wave form.

■Vacuum impregnated epoxy varnish - Fungus resistant per MIL-I-24092.

■Sustain short circuit current at 300% of rated current up to 10 seconds.

Engine Specifications
Manufacturer/Model	Detroit Diesel 8V2000-G81
Engine Type	4-cycle, Turbocharged,
	Air to Water Aftercooled
Cylinder Arrangement	V-8
Displacement	972 in3 (16 liter)
Bore	5.12 in. (130 mm)
Stroke	5.91 in. (150 mm)
Compression Ratio	14.5:1
Piston Speed (60Hz)	29.5 ft./sec. (9.0 m/sec)
Bearing Main: Number	5
Bearing Main: Type	Replaceable, Precision
Cylinder Block	Cast iron
Cylinder Head Material	Cast iron
Crankshaft Material	Forged steel
Valves	Dual, Poppet Type
Brake Mean Effective Pressure (BMEP)	346 psi (2385 Kpa)
Rated RPM (60 Hz)	1800
Max. Power At Rated RPM (with fan)	765 hp (570.5 kW)
Governor: Type	Electronic
Frequency Regulation: No load to full load	+0.10 Hz
Frequency Regulation: Steady State	+0.05 Hz
Air Cleaner Type - All Models	Dry, Dual Element

Amperage

Voltage	Phase	Power	Continuous Amperes
		Factor	Standby	Prime
120/208	3	0.8	1734	1561
277/480	3	0.8	752	677

Engine Electrical System

Battery Charging Alternator Ground Type	Negative
Volts	24 VDC
Ampere Rating	70A
Starter Motor Rated Voltage	24 VDC
Minimum Recommended Battery for	800 Ah
0 °C / Cold Cranking Performance

Derating
Derating Factors (60 Hz)	Altitude	Ambient
		Temperature
The engine may be operated up to 2000 ft.
altitude and 40oC ambient temperature at the		>40 oC =
Standby rating, without derating. For	>2000 m =
operation at higher altitudes and ambient	4% per 500 m	1.5% per 5 oC
temperatures, the power should be derated
according to the following factors:

EGC500DD Rev 2