digplanet beta 1: Athena
Share digplanet:


Applied sciences






















LIRR EMD DM30AC 515 pushing Train 8054.jpg
LIRR #515, an EMD DM30AC, in Farmingdale, NY.
Power type Diesel-electric
(DE30AC and DM30AC)
Dual mode (Diesel-electric/straight electric)
(DM30AC only)
Builder General Motors Electro-Motive Division (EMD)
Model DE30AC (24)
DM30AC (21)
Build date 1997 – 1999
Total produced 46
AAR wheel arr. B-B
Gauge 4 ft 8 12 in (1,435 mm)
Length 75 feet (22.86 m)
Locomotive weight 128 t (126.0 long tons; 141.1 short tons)[1]
Electric system(s) 750 V DC Third rail (DM30AC only)
Current collection
Contact shoe (DM30AC only)
Prime mover 12N-710G3B-EC
Engine type Two-stroke diesel
Aspiration Mechanically-assisted turbocharger
Displacement 8,520 cu in (139.6 L)
Cylinders V12
Cylinder size 710 cu in (11.63 L)[2]
Transmission Alternating current[3]
Top speed 160 km/h (99 mph) diesel,
130 km/h (81 mph) electric[1]
Power output Diesel: 3,000 hp (2,200 kW)[1][3]
Electric: 2,151 kW (2,885 hp) (DM30AC only)[1]
Max at rail: 2,873 hp (2,142 kW)
Tractive effort 360 kN (81,000 lbf)[1]
Locomotive brake Blended Brake
Train brakes KNORR SA-26 air
Railroad(s) Long Island Rail Road
Number 400-423 (DE30AC)
500-506, 508-522(DM30AC)

The EMD DE30AC and EMD DM30AC are 46 locomotives built in 1997-1998 by Electro-Motive Division in the Super Steel Plant in Schenectady NY for the Long Island Rail Road of the Metropolitan Transportation Authority (MTA) in New York. Originally split evenly between DE and DM locomotives, the fleet currently consists of 24 DE30AC locomotives (engines that operate on diesel power only) and 21 DM30AC locomotives (engines that can operate on both diesel and electric power).

Details and usage[edit]

The DE30AC and DM30AC locomotives replaced aging GP38s, Alco FA1/FA2s, F7As and F9As, and MP15AC and SW1001 locomotives, with GP38s used to push and pull diesel trains and other locomotives used to provide Head End Power for the trains. The bodies of the DE30AC and the DM30AC are similar; the difference is the ability of the DM30AC to use electric third rail while the diesel engine is off, enabling the locomotive to use the East River Tunnels into New York Penn Station. DM30ACs have third rail contact shoes, permitting direct service from non-electrified lines in eastern Long Island via the western electrified main lines all the way to Penn Station. A few such trains a day run on the Port Jefferson, Oyster Bay, and Montauk Branches.

Single engines generally run with 6 cars or less and are placed on the East (Montauk) end of the train, although some single engine services run with up to 8 cars. Generally two engines are used when there are 8 or more cars. Of the original 46 locomotives, 45 are still in use: #503 (DM30AC) was damaged in an accident at Huntington on October 23, 2000, when it hit a shopping cart on the tracks, which shorted out the third rail and caused a fire.[4][5] It currently sits in the LIRR's Morris Park yard and has been stripped for spare parts to maintain the remainder of the fleet. #507 (DM30AC) suffered an electrical cabinet failure and was converted into DE30AC #423 at the Morris Park Facility.[6]


See also[edit]


  1. ^ a b c d e "Diesel-Electric Passenger Locomotives DE30AC and DM30AC". Siemens AG. Retrieved 2011-01-14. 
  2. ^ http://www.emdiesels.com/emdweb/products/pdf/EMD_710ECO_Repower_Solutions.pdf
  3. ^ a b LaMay, Robert A. (1998). "Long Island Rail Road's DE30 and DM30 Locomotives". Retrieved 2008-08-31. 
  4. ^ Demoretcky, Tom; Mason, Bill (October 24, 2000). "LIRR Fire Delays Port Jeff Branch". Newsday. p. A.28. 
  5. ^ "Whatever Happened to DM30AC #503?". The LIRR Today. Retrieved 16 November 2013. 
  6. ^ "Whatever Happened to DM30AC #507?". The LIRR Today. Retrieved 17 November 2013. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/EMD_DE30AC_and_DM30AC — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
2124 videos foundNext > 

Forest Hills [LIRR] Station, Train Action (M-7's, DE30AC's, & DM30AC)

Seen is here is some train action at the Forest Hills Station on the City Terminal Zone/Mainline of the MTA Long Island Railroad in Forest Hills Queens,NY Pl...

LIRR: DE30AC 420 and DM30AC 515 at Bethpage

same as title. Taken 8/3/13.

Forest Hills Station DM30AC DE30AC M3 & M7 Action Long Island Railroad

Forest Hills Train action Featuring the M3's M7's DM30-AC and DE30-AC also the C3 Bi Levels and Cannonball 2012 Express Service I have uploaded some of these...

Forest Hills Station DM30AC DE30AC M3 & M7 Action

Forest Hills Station- Long Island Railroad Action IN HD DE30AC DM30AC M7's and M3's and races included 2 videos have been uploaded as preview and Will be inc...

LIRR: DE30AC Locomotive #418 and DM30AC Locomotive #500 @ Sayville

LIRR: Some More DE30AC/DM30AC Action [HD]

Same as above. Enjoy and comment. Yes, I know the 3rd to last clip was bit distorted. Sometimes that happens if I start filming while zoomed in.

DE30AC Engine # 404 And DM30AC'S Engine's #'s 508 And 517, At Patchogue


LIRR:EMD DM30AC Locomotive #512 Departs Hunters Point Station/Toot-toot Hornshow

In the beginning for my first time from LIRR, a nice engineer gave me a short hornshow from his Locomotive after I nicely asked him and made departure. Sorry...

LIRR #508 @ Jamaica Station

Locomotive #508 arriving on track 8 with an Oyster Bay bound passenger train. The EMD DE30AC and EMD DM30AC are 46 locomotives built in 1997-1998 by Electro-...

LIRR Jamaica & Patchogue Bound C-3 Cab Hauling DM30AC #506 & DE30AC #420 @ Sayville

Taken on 11-5-10. Don't forget to rate comment subscribe.

2124 videos foundNext > 

We're sorry, but there's no news about "EMD DE30AC and DM30AC" right now.


Oops, we seem to be having trouble contacting Twitter

Talk About EMD DE30AC and DM30AC

You can talk about EMD DE30AC and DM30AC with people all over the world in our discussions.

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!