View source for EMD DE30AC and DM30AC

{{Short description|Long Island Rail Road locomotive}}
{{use mdy dates|date=March 2022}}
{{Infobox locomotive
| name = EMD DE30AC/DM30AC
| powertype = {{plainlist|
* [[Diesel locomotive#Diesel-electric|Diesel-electric]] (DE30AC)
* [[Electro-diesel locomotive|Dual mode]] (DM30AC)
}}
| image = DM30AC, New Hyde Park, Dec 27 2022 (cropped).jpg
| alt = 
| caption = DM30AC 501 at New Hyde Park
| builder = [[Electro-Motive Diesel|General Motors Electro-Motive Division]] (EMD)
| ordernumber = 
| serialnumber = 
| buildmodel = DE30AC, DM30AC
| builddate = 1997–1999
| totalproduction = 46
| rebuilder = 
| rebuilddate = 
| numberrebuilt = 
| aarwheels = B-B
| Britishclass = [[Bo-Bo]]
| uicclass = Bo′Bo′
| gauge = {{track gauge|ussg|allk=on}}
| trucks = 
| bogies = 
| wheeldiameter = {{convert|44|in|mm|0|abbr=on}}
| minimumcurve = {{plainlist|
* {{convert|135|ft|m|0|abbr=on}} radius/ 43.5° (single unit)
* {{convert|240|ft|m|0|abbr=on}} radius/ 23° (coupled)
}}
| wheelbase = {{plainlist|
* '''Locomotive:''' {{convert|46|ft|2|in|abbr=on}} (between [[truck center]]s)
* '''Truck:''' {{convert|9|ft|6|in|abbr=on}}
}}
| length = {{convert|75|ft|0|in|abbr=on}}
| width = {{convert|10|ft|1|in|abbr=on}}
| height = {{convert|14|ft|4|in|abbr=on}}
| axleload = {{convert|75000|lb|kg|0|abbr=on}} Max
| weightondrivers = 100%
| locoweight = {{plainlist|
* '''DE30AC (400–403):''' {{convert|296878|lb|kg|0|abbr=on}}
* '''DE30AC (404–422):''' {{convert|291735|lb|kg|0|abbr=on}}
* '''DM30AC:''' {{convert|299844|lb|kg|0||abbr=on}}
}}
| electricsystem = {{750 V DC|conductor=third rail}} (DM only)
| collectionmethod = [[Current collector#Contact shoe|Contact shoe]] (DM only)
| fueltype = {{plainlist|
* [[Diesel fuel|Diesel]] (DE)
* Diesel and electric (DM)
}}
| fuelcap = {{plainlist|
* DE: {{convert|3000|USgal|L|abbr=on}}
* DM: {{convert|2400|USgal|L|abbr=on}}
}}
| lubecap = {{convert|215|USgal|L|abbr=on}}
| coolantcap = {{convert|210|USgal|L|abbr=on}}
| watercap = 
| sandcap = {{plainlist|
* {{convert|10|cuft|L|sp=us|abbr=on}} (Front)
* {{convert|5|cuft|L|sp=us|abbr=on}} (Rear)
}}
| consumption = 
| watercons = 
| primemover = [[Electro-Motive Diesel|EMD]] [[EMD 710|12N-710G3B-EC]]
| rpmrange = 434–904
| enginetype = 45° [[V12 engine|V12]], [[two stroke cycle]]
| aspiration = Mechanically-assisted [[Turbocharger]]
| displacement = {{convert|8520|cuin|L|abbr=on|sigfig=4}}<!-- ref not needed, just do the math! -->
| alternator = EMD TA12-QBE
| generator = 
| tractionmotors = 4 × [[Siemens Mobility|Siemens]] 1TB2624-0TA02 {{convert|720|hp|kW|abbr=on}}
| cylindercount = 12
| cylindersize = {{convert|710|cuin|L|abbr=on|sigfig=4}}<ref>{{Cite web| url=http://www.emdiesels.com/emdweb/products/pdf/EMD_710ECO_Repower_Solutions.pdf| url-status=dead| archive-url=https://web.archive.org/web/20160828000609/http://www.emdiesels.com/emdweb/products/pdf/EMD_710ECO_Repower_Solutions.pdf| archive-date=August 28, 2016| title=New 710ECO Repower Products Provide High Performance for Low and Medium Horsepower Applications| website=Electro-Motive Diesel| date=March 2008}}</ref>
| transmission = AC-DC-AC
| multipleworking = Yes
| maxspeed = {{plainlist|
* {{convert|100|mph|km/h|abbr=on}} (diesel)
* {{convert|80|mph|km/h|abbr=on}} (electric)<ref name=Siemens-TechInfo /> <small>(92:19 gear ratio)</small>
}}
| poweroutput = {{plainlist|
* '''Diesel:''' {{convert|2237|kW|abbr=on|order=flip}}<ref name=Siemens-TechInfo /><ref name="Railpace">{{cite web| url=http://www.railpace.com/stories/de30/| website=Railpace| url-status=dead| archive-url=https://web.archive.org/web/20180623061655/http://www.railpace.com/stories/de30/| archive-date=June 23, 2018| last=LaMay| first=Robert A.| title=Long Island Rail Road's DE30 and DM30 Locomotives| year=1998| access-date=2008-08-31}}</ref>
* '''Electric:''' {{convert|2150|kW|abbr=on|order=flip}} <small>(DM30AC only)</small><ref name=Siemens-TechInfo />
* '''Max @ Rail:''' {{convert|2873|hp|kW|abbr=on}}
}}
| tractiveeffort = {{plainlist|
* '''Starting''': {{convert|80000|lbf|kN|abbr=on|sigfig=3}}
* '''Continuous''': {{convert|60000|lbf|kN|abbr=on|sigfig=3}} @{{convert|20|mph|abbr=on|sigfig=3}}
}}
| factorofadhesion = ~3.7
| trainheating = Locomotive-supplied [[head-end power]]
| locobrakes = KNORR CCB1 (26C)<!--|[[Electropneumatic]]-->
| locobrakeforce = {{convert|30000|lbf|kN|abbr=on|sigfig=3}} from {{convert|40|mph|abbr=on|sigfig=3}} to {{convert|35|mph|abbr=on|sigfig=3}} (electric mode) or {{convert|15|mph|abbr=on|sigfig=3}} (diesel mode)
| trainbrakes = KNORR CCB1 (26C)
| safety = [[Cab signalling]], [[Automatic train control|ATC]]
| operator = [[Long Island Rail Road]]
| operatorclass = 
| powerclass = 
| numinclass = {{plainlist|
* 24 (DE30AC)
* 20 (DM30AC)
}}
| fleetnumbers = {{plainlist|
* 400–423 (DE30AC)
* 500–522 (DM30AC)
}}
| officialname = 
| axleloadclass = 
| locale = 
| deliverydate = 
| firstrundate = 
| lastrundate = 
| retiredate = 
| withdrawndate = 
| preservedunits = 
| restoredate = 
| scrapdate = 
| currentowner = 
| 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
| notes = <ref name=Siemens-TechInfo>{{cite web| url=http://www.siemens.cz/extra/msv/cd/TS/Vozidla/Diesel-Electric_Passenger_Loco_DE30AC_and_DM30AC_EN.pdf| archive-url=| archive-date=| title=Diesel-Electric Passenger Locomotives DE30AC and DM30AC| access-date=2011-01-14| publisher=Siemens AG}}{{dead link|date=March 2022}}</ref>
}}
The '''EMD DE30AC''' and '''DM30AC''' are a class of 46 locomotives built between 1997&ndash;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).

== Details ==
The DE30AC and DM30AC locomotives replaced aging [[EMD GP38|GP38]] locomotives, with GP38s used to [[push–pull train|push and pull]] diesel trains and other locomotives converted into [[control car|power packs (cab control)]] used to provide [[head-end power]] for the trains. The bodies of the DE30AC and the DM30AC are extremely 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 [[Pennsylvania Station (New York City)|New York Penn Station]]. This permits 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 Branch|Port Jefferson]], [[Montauk Branch|Montauk]], and [[Oyster Bay Branch|Oyster Bay]] branches, usually during peak times. Due to their height, the DE30AC and DM30AC locomotives, as well as the [[C3 (railcar)|C3 bilevel railcars]] that they typically haul, cannot fit through the [[63rd Street Tunnel]], and are thus unable to serve [[Grand Central Madison station]].<ref name=":2">{{Cite book |url=http://web.mta.info/capital/esa_docs/feisfiles/28_comments_and_responses.pdf |title=East Side Access Environmental Impact Statement |date=March 2001 |publisher=[[MTA Capital Construction]] |chapter=Chapter 28: Comments and Responses on the Draft Environmental Impact Statement |access-date=February 2, 2018 |archive-url=https://web.archive.org/web/20180315133853/http://web.mta.info/capital/esa_docs/feisfiles/28_comments_and_responses.pdf |archive-date=March 15, 2018 |url-status=live}}</ref>

Single engines run with six cars or fewer, in which case the engine is on the east end of the train and a C3 cab car is on the west (Manhattan-facing) end. Generally, two engines are used when there are seven or more cars. Running in electric mode requires two DM30ACs per train regardless of train length.

==Accidents==
* DM30AC 503 was damaged in an accident at [[Huntington station (LIRR)|Huntington]] on October 23, 2000, when a defective shoe beam caused a 750-volt [[short circuit]] with the locomotive's [[third rail]] contact shoe, which in turn caused the locomotive to catch fire.<ref>{{cite news |last1=Demoretcky |first1=Tom |last2=Mason |first2=Bill |title=LIRR Fire Delays Port Jeff Branch |newspaper=Newsday |date=October 24, 2000 |page=A.28 }}</ref> It sat in the LIRR's [[Morris Park Facility]] and had been stripped for spare parts to maintain the remainder of the fleet until July 2018, when it was scrapped.
* DM30AC 511 was damaged in an accident on May 25, 2019. It hit a 14-unit long train stopped at the siding east of [[Speonk station]], which is 13 units long; this caused the locomotive to lose a third rail shoe and sustain frame damage.<ref name=SK-newsday-1030>{{cite news |url=https://www.newsday.com/long-island/transportation/federal-railroad-administration-speonk-s60179# |title=Track circuit failure caused LIRR train derailment in Speonk, report states |last=Castillo |first=Alfonso A. |work=Newsday |date=October 30, 2019 |access-date=August 4, 2023}}</ref> It is now sitting in the [[Morris Park Facility]], most likely to be used for parts before being scrapped.<ref>{{cite web| title=Long Island Railroad Wrecks| date=2006| url=http://www.trainsarefun.com/lirr/lirrwrecks/lirrwrecks.htm| website=TrainsAreFun}}</ref>

In addition, DM30AC 507 suffered an electrical cabinet failure. Unlike 503 and 511, it was salvaged by being converted into a DE30AC locomotive, renumbered to 423, and returned to service.

== Planned replacement ==
In December 2020, the [[Metropolitan Transportation Authority]] of New York board approved a [[Federal Transit Administration]]-funded $335 million contract for 27 dual-mode locomotives, based on the [[Siemens Charger]] design. The order also includes additional options for up to 144 more locomotives, of which 66 could go to the LIRR.<ref>{{Cite web |url=https://new.mta.info/document/25251 |pages=128–132 |title=Joint Metro-North and Long Island Committees Meeting |publisher=Metropolitan Transportation Authority |date=December 2020}}</ref><ref>{{Cite news |date=December 14, 2020 |title=Metro-North set to buy dual-mode locomotives from Siemens |url=https://trn.trains.com/news/news-wire/2020/12/14-digest-metro-north-set-to-buy-dual-mode-locomotives-from-siemens |newspaper=Trains Magazine |access-date=February 1, 2021 |archive-date=January 31, 2021 |archive-url=https://web.archive.org/web/20210131115818/https://trn.trains.com/news/news-wire/2020/12/14-digest-metro-north-set-to-buy-dual-mode-locomotives-from-siemens |url-status=dead }}</ref> As a part of the Long Island Railroad's Capital Program, the railroad is exercising Option 3 of the previously awarded contract to order up to 44 new dual-mode locomotives, which would likely replace the older DE30AC and DM30AC locomotives.<ref>{{Cite web |date=2024-12-17 |title=MTA considers $788 million deal for new locomotives |url=https://www.newsday.com/long-island/transportation/mta-dual-mode-locomotives-gunit2p0 |access-date=2025-01-03 |website=Newsday |language=en}}</ref><ref>{{Cite web |title=MTA Set for Record-Breaking Progress in 2025 after Board Approves Transformational Capital Projects |url=https://new.mta.info/press-release/mta-set-record-breaking-progress-2025-after-board-approves-transformational-capital |access-date=2025-01-03 |website=MTA |language=en}}</ref>

== Gallery ==
<gallery>
Image:Eastbound train leaving Hunterspoint Avenue station, September 2018.JPG|DE30AC #401
Image:LIRR EMD DM30AC 515 pushing Train 8054.jpg|DM30AC #515
Image:LIRR513Cab.jpg|The cab of engine #513
Image:The_Third_Rail_conductor_shoe_on_DM30AC_-514._(June_2024).jpg|Third rail conductor shoe on DM30AC #514.
Image:LIRR503August2011.jpg|The remnants of engine #503
Image:LIRR503StrippedCab.jpg|The cab of engine #503
</gallery>

== See also ==
* [[C3 (railcar)]]

== References ==
{{reflist}}

== External links ==
*{{commons category inline|EMD DE30AC locomotives}}
*{{commons category inline|EMD DM30AC locomotives}}
*[https://web.archive.org/web/20140128184929/http://i.ebayimg.com/00/s/MTYwMFgxMDQ0/z/AFAAAOxyOMdS5v~c/%24_57.JPG EMD DE30AC/DM30AC Sell Sheet] ''via Archive.org''

{{EMD cab and cowl}}
{{Long Island Rail Road}}
{{NA Electro-diesel}}

{{DEFAULTSORT:Emd De30ac And Dm30ac}}
[[Category:Electro-diesel locomotives]]
[[Category:Electro-Motive Division locomotives|DE30AC]]
[[Category:Long Island Rail Road]]
[[Category:B-B locomotives]]
[[Category:600 V DC locomotives]]
[[Category:Passenger locomotives]]
[[Category:Diesel–electric locomotives of the United States]]
[[Category:Railway locomotives introduced in 1997]]
[[Category:Standard-gauge locomotives of the United States]]
[[Category:American Passenger Locomotives]]