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|image=WDM7 BioDiesel.JPG | |image=WDM7 BioDiesel.JPG | ||
|alt= | |alt= | ||
|caption=WDM-7 hauling a freight | |caption=WDM-7 #11008 hauling a freight train; this loco is fuelled by [[bio-diesel]] | ||
|powertype=diesel | |powertype=diesel | ||
|builder=[[Banaras Locomotive Works|BLW]] | |builder=[[Banaras Locomotive Works|BLW]] | ||
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|serialnumber= | |serialnumber= | ||
|buildmodel=[[ALCO DL560C|DL560C]] | |buildmodel=[[ALCO DL560C|DL560C]] | ||
|builddate=1987- 1989 | |builddate=1987-1989 | ||
|totalproduction=15 | |totalproduction=15 | ||
|Britishclass =[[Co-Co locomotives|Co-Co]] | |Britishclass =[[Co-Co locomotives|Co-Co]] | ||
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|cylindersize={{convert|228|x|266|mm|in|2|abbr=on}}<br> [[Bore (engine)|bore]]×[[Stroke (engine)|stroke]] | |cylindersize={{convert|228|x|266|mm|in|2|abbr=on}}<br> [[Bore (engine)|bore]]×[[Stroke (engine)|stroke]] | ||
|transmission=[[Diesel-electric transmission]] | |transmission=[[Diesel-electric transmission]] | ||
|multipleworking=2 units<ref>https://www.irfca.org/gallery/Locos/Diesel/wdm1_4_5_6_7/WDM7_twins.jpg.html?</ref> | |multipleworking=2 units<ref>{{cite web | url=https://www.irfca.org/gallery/Locos/Diesel/wdm1_4_5_6_7/WDM7_twins.jpg.html? | title=WDM7_twins }}</ref> | ||
|trainheating= | |trainheating= | ||
|locobrakes= | |locobrakes= | ||
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|disposition=active | |disposition=active | ||
}} | }} | ||
The | The '''WDM-7''' is a [[diesel-electric locomotive]] of [[Indian Railways]]. It has been manufactured by [[Banaras Locomotive Works]] (BLW), Varanasi. The model name stands for [[5 ft 6 in gauge railway|broad gauge (W)]], diesel (D), mixed traffic (M) engine. Today, these are found exclusively at [[Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station|Chennai Central]] and nearby area. | ||
__TOC__ | __TOC__ | ||
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== History == | == History == | ||
Fifteen of these locomotives (road numbers #11001 to #11015) were built from 1987 to 1989 as a low-powered, “lightweight” version of the original ALCO. Like the [[Indian locomotive class WDM-6|WDM-6]], maybe IR wanted a lower powered locomotive to handle small rake local and passenger services. However, all sheds declined them and they ended up at [[Diesel Loco Shed, Ernakulam|Ernakulam]] where they were used to handle local and shuttle services with good degrees of efficiency. Becoming aware of their abilities, SR moved all the WDM-7s out of Ernakulam to [[Tondiarpet railway station|Tondiarpet]], where they are housed today. These days, they are seen being used as shunters at Chennai Central or for light passenger haulage. One (#11008) has been modified to run on bio-diesel. | |||
These Co-Co diesel- | These Co-Co diesel-electric locomotives were designed primarily for branch-line duties (top speed 105 km/h). They have two 3-axle bogies. The power-pack is a 12-cylinder Alco 251B unit. They are a lower-powered variant of the [[Indian locomotive class WDM-2|WDM-2]] (the latter produces 2600 hp of usable power, as opposed to the WDM-7 which produces 2000 hp). They were formerly housed at [[Diesel Loco Shed, Erode|Erode]] and [[Diesel Loco Shed, Golden Rock|Golden Rock]] as well. They are reliable and rugged locomotives even though low-powered. They can be easily recognised by the lack of grilles on the short hood; in fact, they look exactly the same as the [[Indian locomotive class WDM-2|WDM-2]] except for the “clean” short-hood-forward nose without grilles. Two locos currently operate on a mixture of bio-diesel and diesel. As of today, all 15 built are still in service. | ||
{{clear left}} | {{clear left}} | ||
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{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! Zone !! | ! Zone !! Name !! Shed Code !! Quantity | ||
|- | |- | ||
| [[Southern Railway zone|Southern Railway]] || [[Tondiarpet railway station|Tondiarpet]] || TNP || | | [[Southern Railway zone|Southern Railway]] || [[Tondiarpet railway station|Tondiarpet]] || TNP || 14 | ||
|- | |- | ||
| colspan="3" |'''Total Locomotives Active as of | | colspan="3" |'''Total Locomotives Active as of June 2023'''<ref>{{cite web|url=https://www.irfca.org/apps/locos/list?list_type=named|title = IRFCA}}</ref> || 14 | ||
|} | |} | ||
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== See also == | == See also == | ||
* [[Indian locomotive class WDM-2]] | * [[Indian locomotive class WDM-2]] | ||
* [[List of diesel locomotives of India | * [[List of diesel locomotives of India]] | ||
* [[Rail transport in India]] | * [[Rail transport in India]] | ||
* [[ | * [[Rail transport in India#History]] | ||
== References == | == References == | ||
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== External links == | == External links == | ||
* [http://www.indianrailways.gov.in/railwayboard/view_section.jsp?lang=0&id=0,1,304,366,541,710,717 Ministry of Railways (Railway Board)] | * [http://www.indianrailways.gov.in/railwayboard/view_section.jsp?lang=0&id=0,1,304,366,541,710,717 Ministry of Railways (Railway Board)] | ||
* [https://www.irfca.org/apps/locos/changes [IRFCA] Indian Railways Locomotive Roster Changes] | * [https://www.irfca.org/apps/locos/changes [IRFCA] Indian Railways Locomotive Roster Changes] | ||
{{Broad gauge locomotives of India|state=collapsed}} | {{Broad gauge locomotives of India|state=collapsed}} | ||
{{DEFAULTSORT:WDM-7}} | {{DEFAULTSORT:WDM-7}} | ||
[[Category:Diesel-electric locomotives of India|M-7]] | [[Category:Diesel-electric locomotives of India|M-7]] | ||
[[Category:Banaras Locomotive Works locomotives]] | [[Category:Banaras Locomotive Works locomotives]] | ||