The EMD DE30AC and DM30AC are a class of 46 locomotives built between 1997–1999 by Electro-Motive Division in the Super Steel Plant in Schenectady, New York, for the Long Island Rail Road of the Metropolitan Transportation Authority (MTA) in New York. Originally divided equally between the two types, the fleet currently consists of 24 DE30AC locomotives (diesel power only) and 20 DM30AC locomotives (diesel or third rail power).
Quick Facts Type and origin, Power type ...
EMD DE30AC/DM30AC |
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DM30AC 501 at New Hyde Park |
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Specifications |
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Configuration:
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• AAR | B-B |
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• UIC | Bo′Bo′ |
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• Commonwealth | Bo-Bo |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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Wheel diameter | 44 in (1,118 mm) |
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Minimum curve |
- 135 ft (41 m) radius/ 43.5° (single unit)
- 240 ft (73 m) radius/ 23° (coupled)
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Wheelbase |
- Locomotive: 46 ft 2 in (14.07 m) (between truck centers
- Truck: 9 ft 6 in (2.90 m)
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Length | 75 ft 0 in (22.86 m) |
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Width | 10 ft 1 in (3.07 m) |
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Height | 14 ft 4 in (4.37 m) |
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Axle load | 75,000 lb (34,019 kg) Max |
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Adhesive weight | 100% |
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Loco weight |
- DE30AC (400–403): 296,878 lb (134,662 kg)
- DE30AC (404–422): 291,735 lb (132,329 kg)
- DM30AC: 299,844 lb (136,007 kg)
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Fuel type |
- Diesel (DE)
- Diesel and electric (DM)
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Fuel capacity |
- DE: 3,000 US gal (11,000 L)
- DM: 2,400 US gal (9,100 L)
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Lubricant cap. | 215 US gal (810 L) |
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Coolant cap. | 210 US gal (790 L) |
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Sandbox cap. |
- 10 cu ft (280 L) (Front)
- 5 cu ft (140 L) (Rear)
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Electric system/s | Third rail, 750 V DC (DM only) |
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Current pickup(s) | Contact shoe (DM only) |
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Prime mover | EMD 12N-710G3B-EC |
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RPM range | 434–904 |
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Engine type | 45° V12, two stroke cycle |
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Aspiration | Mechanically-assisted Turbocharger |
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Displacement | 8,520 cu in (139.6 L) |
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Alternator | EMD TA12-QBE |
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Traction motors | 4 × Siemens 1TB2624-0TA02 720 hp (540 kW) |
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Cylinders | 12 |
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Cylinder size | 710 cu in (11.63 L)[1] |
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Transmission | AC-DC-AC |
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MU working | Yes |
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Train heating | Locomotive-supplied head-end power |
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Loco brake | KNORR CCB1 (26C) |
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Train brakes | KNORR CCB1 (26C) |
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Safety systems | Cab signalling, ATC |
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Performance figures |
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Maximum speed |
- 100 mph (160 km/h) (diesel)
- 80 mph (130 km/h) (electric)[2] (92:19 gear ratio)
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Power output |
- Diesel: 3,000 hp (2,237 kW)[2][3]
- Electric: 2,880 hp (2,150 kW) (DM30AC only)[2]
- Max @ Rail: 2,873 hp (2,142 kW)
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Tractive effort |
- Starting: 80,000 lbf (356 kN)
- Continuous: 60,000 lbf (267 kN) @20 mph (32.2 km/h)
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Factor of adh. | ~3.7 |
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Brakeforce | 30,000 lbf (133 kN) from 40 mph (64.4 km/h) to 35 mph (56.3 km/h) (Electric Mode) or 15 mph (24.1 km/h) (Diesel Mode) |
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Career |
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Operators | Long Island Rail Road |
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Number in class | |
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Numbers |
- 400–423 (DE30AC)
- 500–522 (DM30AC)
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Disposition | Locomotive #503 damaged in a fire in October 2000
Locomotive #507 converted to #423 after electrical cabinet failure
Locomotive #511 retired due to derailment in May 2019
Rest of fleet operational |
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