Ajendra69 at 04:11, 30 May 2022

2022-05-30T04:11:23Z

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{{Use dmy dates|date=May 2019}}{{Use Indian English|date=May 2019}}
{{Infobox locomotive
| name = WDG-3A
| powertype = Diesel
| image = File:KYN WDG3A.jpg
| alt =
| caption = KYN based WDG-3A (no. 13370) rests at Kurla outer
| builder = [[Banaras Locomotive Works|BLW]], Diesel Loco Modernisation Works
| ordernumber =
| serialnumber =
| buildmodel = [[ALCO-251C|ALCO DL560C]] variant
| builddate = 1994-2015
| totalproduction = '''WDG-3A''': 1998
| rebuilder = Diesel Loco Modernisation Works, Patiala
| rebuilddate =
| numberrebuilt =
| aarwheels =
| uicclass = Co-Co
| gauge = {{track gauge|1676mm|lk=on}}
| trucks =
| bogies = High adhesion Fabricated bogies
| wheeldiameter = {{convert|1,092|mm|ftin|2|abbr=on|frac=8}}
| trailingdiameter =
| minimumcurve =
| wheelbase = {{convert|12.834|m|ftin|abbr=on|frac=8}}
| length = {{convert|17.85|m|ftin|abbr=on|frac=8}}
| width = {{convert|3.016|m|ftin|abbr=on|frac=8}}
| height = {{convert|4.162|m|ftin|abbr=on|frac=8}}
| axleload = {{convert|20500|kg|abbr=on}}
| weightondrivers =
| locoweight = {{convert|123|t|abbr=on}}
| fueltype = [[Diesel fuel|Diesel]]
| fuelcap = {{convert|6000|L|abbr=on}}
| lubecap =
| coolantcap =
| watercap =
| sandcap =
| consumption =
| watercons =
| primemover = [[ALCO 251|ALCO 251-C]]
| rpmrange = 400 - 1050 rpm
| enginetype = [[V16 engine|V16]] [[Diesel engine]]
| aspiration = [[ABB Group|ABB]] VTC304-15 or [[D. Napier & Son|Napier]] NA 295 IR [[turbocharger]]
| displacement =
| alternator =
| generator =
| tractionmotors = [[Bharat Heavy Electricals|BHEL]] TA 10102 CW (new), BHEL TG 10931 AZ(old)
| cylindercount = 16
| cylindersize = {{convert|228|x|266|mm|in|2|abbr=on}} <br />[[Bore (engine)|bore]] x [[Stroke (engine)|stroke]]
| transmission = [[Diesel electric]]
| multipleworking = 2
| maxspeed = {{convert|105|km/h|0|abbr=on}}
| poweroutput = WDG-3A: 3100 HP
| tractiveeffort = {{convert|37.90|t|0|abbr=on}} 
| factorofadhesion = 0.33
| trainheating =
| locobrakes =
| locobrakeforce =
| trainbrakes = [[Railway air brake|Air]], [[Vacuum brake|Vacuum]] and [[Vacuum brake#Dual brakes|Dual]]
| safety =
| operator = [[Indian Railways]]
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers = '''14501-14999''', Newer '''13000-13665'''
| officialname =
| nicknames = Shakti, Prabal, Jai Jawan
| axleloadclass =
| locale = throughout Indian Railways
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate =
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner =
| disposition = active
}}

The Indian locomotive class '''WDG-3A''' is a class of [[diesel-electric locomotive]] that was developed in 1994 by [[Banaras Locomotive Works]] (BLW),Varanasi for [[Indian Railways]]. The model name stands for [[5 ft 6 in gauge railway|broad-gauge (W)]], Diesel (D), Goods traffic (G) engine, 3100 Horsepower (3A) locomotive. They entered service on 18 July 1995. A total of 1164 WDG-3A units were built between 1994 and 2015 at [[Banaras Locomotive Works|BLW]], Varanasi with a few units being produced by [[Diesel-Loco Modernisation Works|Diesel Loco Modernisation Works]] (DLMW) and Parel Workshop.

It is the dedicated freight version of the hugely successful [[Indian locomotive class WDM-2|WDM-2]] and shares the same engine and horsepower rating with [[Indian locomotive class WDM-3A|WDM-3A]]. It is considered to be a successful locomotive class with high reliability and few maintenance problems. Despite the introduction of more modern types of locomotives like [[Indian locomotive class WDG-4|WDG-4]] and electrification, a significant number are still in use, both in mainline and departmental duties.

As of April 2022, 1047 locomotives still retain "operational status" on the mainline as WDG-3A, with a few examples having been converted to [[Indian locomotive class WAGC3/WAG-10|WAGC3]] or WAG-10.

== History ==

The first units of this class was delivered on July 18, 1995, under the name of WDG-2.<ref>{{Cite web| publisher=Indian Railways Fan Club| url=http://irfca.org/faq/faq-history5.html| title=IR History: Part - V (1970-1995)| access-date=August 22, 2017}}</ref> The class was manufactured till end of 2015. All the older locomotives built by DLW had regular WDM-2 type square short hood profile and control stand position and the locomotives are rated at 3100 HP.

From 2009 onward they are equipped with Daulat Ram DBR, microprocessor control and an Auxiliary Power Unit (APU) in the short hood thus they bear external resemblance to the [[Indian locomotive class WDM-3D|WDM-3D]] class.<ref>{{Cite web |publisher= Indian Railways |title= Company Profile |url= http://www.dmw.indianrailways.gov.in/works/uploads/File/Company%20Profile.pdf |website= indianrailways.gov.in |access-date= March 2, 2018}}</ref><ref>{{Cite web |publisher=RDSO |title= Motive Power |date= 2018 |url= http://www.rdso.indianrailways.gov.in/works/uploads/File/motive_power.pdf |website= indianrailways.gov.in |access-date= March 2, 2018}}</ref> The WDG3A has higher Tractive Effort (7.5 t more) and Axle Load (1.7 t) compared to the WDM3A despite having the same engine and horsepower rating. Many units of this class has been named "Shakti" and can easily be recognized by their orange livery with cream stripe & lightning bolts. Besides [[Indian Railways|IR]], WDG-3A are being use by private companies for industrial uses, thermal power plants, port trusts, etc.

Production was stopped in 2015 when Advanced locomotives like the [[EMD GT46MAC|WDG-4D]] were built, thus rendering the ALCO platform obsolete. Two WDG-4s can haul more goods than three WDG-3A combined. Meanwhile, Diesel Loco Works in Varanasi rebuilt few of the existing locomotives that had reached midlife into a purely electric twin section 10,000 HP (7,457 kW) locomotive, classifying them as the WAGC3.

== Sub Classes ==

=== WDG-3B ===
They were an experimental technical variant of the WDG3A with an upgraded ALCO engine to output 3200 hp. But the experiment was unsuccessful and all units were reverted to normal WDG-3A. One of the locomotives of this class was numbered #14796.<ref>{{Cite web|url=https://24coaches.com/wdp-wdg-alco-emd-descriptions/|title=Diesel Locomotive Roster – The WDP and WDG Series!|last=Theevandi|date=2014-01-06|website=24 Coaches|language=en-US|access-date=2019-06-29}}</ref>

=== WDG-3C ===
Another experimental class, but this time rated at 3300 hp. Only one unit (#14962) was produced and was painted in a unique "Dark Rose/Cheetah" livery.<ref>{{Cite web|url=https://www.irfca.org/gallery/Locos/Diesel/wdg2_3/wdg3_cheetah.jpg.html|title=wdg3_cheetah.jpg|website=www.irfca.org|access-date=2019-06-29}}</ref><ref>{{Cite web|url=https://www.irfca.org/gallery/Trips/north/AgraTrip/agf_trip2.jpg.html|title=agf_trip2.jpg|website=www.irfca.org|access-date=2019-06-29}}</ref> This loco was derated to 2600 hp but is still with the [[Katni Junction railway station|Katni]] diesel locomotive shed. This class was unsuccessful as well.

=== WDG-3D ===
Freight version of the [[ALCO DL560C|WDM-3D]]. Only one (#13301) unit was marked with this marking. It may possibly be rated at 3400 hp.<ref>{{Cite web|url=https://www.irfca.org/gallery/Locos/Diesel/wdg2_3/WDG-3D+%2313301.jpg.html|title=WDG-3D #13301}}</ref><ref>{{Cite web|url=https://www.irfca.org/apps/locos/show/7549|title=[IRFCA] Indian Railways Locomotive Roster Vatva (VTA) WDG-3A 13301 Show|website=www.irfca.org|access-date=2019-06-29}}</ref> Now it has been derated to 2600 hp with WDG-3A class markings and homed at the Vatva Loco Shed.

== Locomotive sheds ==
{| class="wikitable"
|-
! Zone !! Name !! Shed Code !! Quantity
|-
|rowspan="3" |[[Central Railway zone|Central Railway]]|| [[Pune Junction railway station|Pune]]|| PA || 20
|-
| [[Kalyan Junction railway station|Kalyan]] || KYN || 35
|-
| [[Kurla railway station|Kurla]] || CLA || 8
|-
| [[Eastern Railway zone|Eastern Railway]] || [[Andal railway station|Andal]] || UDL || 70
|-
| rowspan="3" |[[East Central Railway zone|East Central Railway]] || [[Patratu railway station|Patratu]] || PTRU || 2
|-
| [[Mughalsarai]] || MGS || 6
|-
| [[Samastipur Junction railway station|Samastipur]] || SPJ || 75
|-
| [[East Coast Railway zone|East Coast Railway]] || [[Visakhapatnam railway station|Visakhapatnam]] || VSKP || 93
|-
| rowspan="3" |[[Northern Railway zone|Northern Railway]] || [[Ludhiana Junction railway station|Ludhiana]] || LDH || 39
|-
| [[Lucknow Charbagh railway station|Lucknow]] || LKO || 23
|-
| [[Tughlakabad railway station]] || TKD || 10
|-
| [[North Central Railway zone|North Central Railway]] || [[Jhansi Junction railway station|Jhansi]] || JHS || 35
|-
| [[North Eastern Railway zone|North Eastern Railway]] || [[Izzatnagar railway station]] || IZN || 10
|-
| rowspan="2" |[[Northeast Frontier Railway zone|Northeast Frontier Railway]] || [[Malda Town railway station|Malda Town]] || MLDT || 4
|-
| [[Guwahati railway station|Guwahati]] || NGC || 51
|-
| [[North Western Railway zone|North Western Railway]] || [[Abu Road railway station|Abu Road]] || ABR || 10
|-
| rowspan="4" |[[Southern Railway zone|Southern Railway]] || [[Erode Junction railway station|Erode]] || ED || 1
|-
| [[Ernakulam Junction railway station|Ernakulam]] || ERS || 23
|-
| [[Golden Rock railway station|Golden Rock]] || GOC || 42
|-
| [[Tondiarpet railway station|Tondiarpet]] || TNP || 4
|-
| rowspan="4" |[[South Central Railway zone|South Central Railway]] || [[Gooty Junction railway station|Gooty]] || GY || 5
|-
| [[Guntakal Junction railway station|Guntakal]] || GTL || 60
|-
| [[Vijayawada Junction railway station]] || BZA || 13
|-
| [[Moula Ali railway station|Moula Ali]] || MLY|| 51
|-
|[[South Eastern Railway zone|South Eastern Railway]] ||[[Bondamunda railway station|Bondamunda]] || BNDM || 94
|-
| [[South East Central Railway zone|South East Central Railway]] || [[Raipur Junction railway station|Raipur]] || R || 34
|-
| [[South Western Railway zone|South Western Railway]] || [[Krishnarajapuram railway station|Krishnarajapuram]] || KJM ||21
|-
| rowspan="3" |[[Western Railway zone|Western Railway]] || [[Ratlam Junction railway station|Ratlam]] || RTM || 40
|-
| [[Gandhidham Junction railway station]] || GIMB || 14
|-
| [[Vatva railway station|Vatva]] || VTA || 14
|-
| [[West Central Railway zone|West Central Railway]] || [[New Katni Junction railway station|New Katni Junction]] || NKJ || 118
|-
| colspan="3" |'''Total Locomotives Active as of 01-05-2022'''<ref>{{Cite web|title=Railway Website Mechanical Department|url=http://www.indianrailways.gov.in/railwayboard/view_section.jsp?lang=0&id=0,1,304,366,541,710,717|access-date=16 May 2020}}</ref> || 1027
|}


== WDG-3A Converted into Electric Locomotive WAGC-3 ==

In 2018, [[Chittaranjan Locomotive Works]], [[Banaras Locomotive Works]] and [[Research Design and Standards Organisation]] converted a WDG-3A into a purely electric, twin-section 10,000 HP (7,457 kW) locomotive, classified as the [[Indian locomotive class WAGC3/WAG-10|WAGC3]].<ref>{{Cite news|url=https://www.financialexpress.com/infrastructure/railways/indian-railways-creates-history-converts-diesel-loco-to-make-in-india-10000-hp-electric-locomotive/1086123/|title=Indian Railways creates history! Converts diesel loco to 'Make in India' electric locomotive; watch video|date=2018-03-03|work=The Financial Express|access-date=2018-10-01|language=en-US}}</ref> This locomotive was the result of the initiative taken up by the Railway Board in November 2017, asking RDSO to work out details of conversion of diesel locos to electric locos. RDSO had suggested that such conversion would be possible with retaining the Motorized Truck assembly (which includes traction motors and drive side traction converters), computer controlled brakes (CCBs) and other relevant parts, suitably redesigning the under-frame and superstructure and adding the conversion kit. It was done in a record time of 69 days.<ref>{{Cite web|url=http://www.railnews.in/dlw-varanasi-converts-wagc3-class-diesel-locomotive-from-diesel-to-electric-traction/|title=DLW/Varanasi converts WAGC3-class Diesel Locomotive from Diesel to Electric Traction – RailNews Media India Ltd|language=en-US|access-date=2019-06-29}}</ref><ref>{{Cite web|url=https://timesofindia.indiatimes.com/city/varanasi/indian-railways-creates-history-by-converting-diesel-locomotive-into-electric/articleshow/63148718.cms|title=Diesel Locomotive Works (DLW): Indian Railways creates history by converting diesel locomotive into electric India|date=March 3, 2018|first=Binay |last=Singh |website=The Times of India|language=en|access-date=2019-06-29}}</ref> Both units will together be considered as one asset and one locomotive by Indian Railways. Only a single unit has been produced so far{{when|When is "now"|date=December 2020}} and it is in service. It has been given to Bondamumda Shed of SER.

==Technical specifications==
Technical details are as follows:<ref>{{Cite web| url=http://www.irfca.org/faq/faq-loco2d.html#wdm-2| title=Diesel Locomotive Classes – Broad Gauge| publisher=Indian Railways Fan Club}}</ref><ref>https://www.dlw.indianrailways.gov.in/works/uploads/File/WDG3A.pdf {{Dead link|date=March 2022}}</ref>
{| class="wikitable"
|-
|Manufacturers
| DLW
|-
| Engine
| Alco 251-C, 16 [[cylinder (engine)|cylinder]], {{convert|3,100|hp|kW|abbr=on|lk=on}}, ({{convert|3007|hp|kW|abbr=on|disp=or}} site rating, earlier {{convert|2,900|hp|kW|abbr=on|lk=on}}) with Napier NA2951R/ ABB VTC-304-VG15/ GE 7s 1716 turbo supercharged engine. 1,050 rpm max, 400 rpm idle; {{convert|228.6|x|266.7|mm|in|2|abbr=on}} bore x stroke; compression ratio 12.5:1. Direct fuel injection, centrifugal pump cooling system ({{convert|2,457|L/min|abbr=on}} at 1,050 rpm), fan driven by [[eddy current]] clutch ({{convert|90|hp|kW|abbr=on|disp=or}} at 1,050 rpm)
|-
| Governor
| [[Eddy Current|EDC]] / Woodward 8574-650
|-
|Transmission
|Electric, with [[Bharat Heavy Electricals Limited|BHEL]] TA 10102 CW [[Alternator#Diesel electric locomotive alternators|alternator]] (1,050 rpm, 1100 V, 4,400 [[ampere]]s) (Earlier used BHEL TG 10931 AZ alternator)
|-
|[[Traction motor]]s
|BHEL TM 4906 AZ/ 4907 BZ ({{convert|435|hp|abbr=on|disp=or}}) (with [[roller bearing]]s)
|-
|[[Axle load]]
|{{convert|18.8|t}}, total weight {{convert|112.8|t|abbr=on}}
|-
|[[Bogie]]s
|[[Alco]] High Adhesion Fabricated Bogies
|-
|Starting TE
|{{convert|40|t|abbr=on}} at adhesion 30.8%, continuous {{convert|37.05|t|abbr=on}}
|-
|Length over [[buffer beam]]s
|{{convert|17850|mm|ftin|abbr=on|frac=8}}
|-
|Distance between bogies
|{{convert|11500|mm|ftin|abbr=on|frac=8}}
|}

==See also==
*[[Indian locomotive class WDM-3A]]
*[[Indian locomotive class WDM-2]]
*[[List of diesel locomotives of India]]
*[[Indian Railways]]
*[[Rail transport in India]]

==References==
{{reflist}}

{{Broad gauge locomotives of India |state=open}}

{{DEFAULTSORT:WDG-2/3A}}
[[Category:Diesel-electric locomotives of India|G-2 3A]]
[[Category:Co-Co locomotives]]
[[Category:Banaras Locomotive Works locomotives]]
[[Category:5 ft 6 in gauge locomotives]]
[[Category:Railway locomotives introduced in 1994]]

Indian locomotive class WDG-3A - Revision history

Ajendra69 at 04:11, 30 May 2022