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2026-03-29T03:04:22Z

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2409:4041:D97:1886:0:0:2149:1401: /* Locomotive sheds */

2021-07-09T08:01:35Z

Locomotive sheds

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{{Multiple issues|
{{Original research|date=January 2021}}
{{Unreferenced|date=January 2021}}
}}
{{Use dmy dates|date=May 2019}}
{{Use Indian English|date=May 2019}}
{{Infobox locomotive
| name = WAP-4
| image = Itarsi WAP-4.jpg
| caption = Itarsi based WAP-4 with passenger train
| powertype = Electric
| builder = [[Chittaranjan Locomotive Works]], [[West Bengal]], [[India]]
| gauge = {{Track gauge|5ft6in|lk=on}}
| poweroutput = Continuous: {{convert|5050|hp|kW|0|abbr=on}}
| maxspeed = {{convert|140|km/h|mph|0|abbr=on}}
| tractiveeffort = Starting : {{convert|30800|kgf|kN lbf|abbr=on}}
| serialnumber =
| builddate = 1993 till 2 December 2015
| uicclass = Co'-Co'
| bogies = Co-Co Flexicoil Mark 90 cast bogies; primary and secondary wheel springs with bolsters
| wheeldiameter = New:{{convert|1092|mm|ftin|0|abbr=on}}<br />Half worn: {{convert|1055|mm|ftin|abbr=on|frac=2}}<br />Full worn: {{convert|1016|mm|ftin|0|abbr=on}}
| length = {{convert|18.794|m|ftin|abbr=on|frac=32}}
| height = {{convert|4.272|m|ftin|abbr=on|frac=32}}
| width = {{convert|3.179|m|ftin|abbr=on|frac=32}}
| axleload = {{convert|18800|kg|abbr=on}}
| locoweight = {{convert|112800|kg|abbr=on}}
| tractionmotors = [[Hitachi]] HS15250
| locobrakes = [[Railway air brake|Air]]
| trainbrakes = Air
| safety = Slip control, Over voltage relay, Main overload relay, Earth Fault Relay, Low Pressure Governor, Brake Cylinder Cutoff Valve, Train parting alarms and No OHE volt relay
| operator = [[Indian Railways]]
| fleetnumbers = '''22061''' and from '''22201'''-'''22399''', '''22500'''-'''22999''' & '''25000-25051'''
| totalproduction = '''778''' as of August 2016 (Production Ceased)
| aarwheels = C-C
| electricsystem = {{25 kV 50 Hz}} [[Overhead line|Overhead]]
| collectionmethod = [[pantograph (rail)|pantograph]]
| locale = All over [[India]]
| disposition = Active
}}

The Indian locomotive class '''WAP-4''' is a class of 25 [[Volt|kV]] [[Alternating current|AC]] [[electric locomotive]]s that was developed in 1993 by [[Chittaranjan Locomotive Works]] for [[Indian Railways]]. The model name stands for [[5 ft 6 in gauge railway|broad gauge (W)]], AC Current (A), Passenger traffic (P) engine, 4th generation (4). They entered service in late 1994. A total of 773 WAP-4 were built at CLW between 1993 and 2015, which made them the most numerous class of mainline electric passenger locomotive until the [[Indian locomotive class WAP-7|WAP-7]]. The locomotive was developed after its predecessor, the [[Indian locomotive class WAP-1|WAP-1]], was found inadequate to haul the longer, heavier express trains (24-26 coaches) that were becoming the mainstay of the Indian Railways network.

The WAP-4 is one of the most successful locomotives of Indian Railways serving both passenger and freight trains for over 26 years. This class provided the basic design for other locomotives like the [[Indian locomotive class WAP-6|WAP-6]] . Despite the introduction of more modern types of locomotives like WAP-7, a significant number are still in use, both in mainline duties. Production of this class was halted in December 2015 with locomotive number 25051 being the last unit to be rolled out of [[Chittaranjan Locomotive Works]]. As of January 2021, all locomotives except those lost in accidents still retain "operational status" on the mainline as WAP-4, with further examples having been converted back from WAP-6.
Recently as per directive received from Railway Board [RB] all the loco sheds holding WAP-4 type locomotive have started "Mu" [Multiple Unit] operations. This configuration of Mu WAP-4 locos are being used to haul medium tonnage faster freight trains across IR.
The different locomotive sheds of [[WAP4]] are [[Arakkonam Junction railway station|Arakkonam]], [[Santragachi]], [[Erode]], [[Mughalsarai Junction railway station|MughalSarai]], [[Howrah]] and [[Bhusaval]].

== Locomotive sheds ==
{| class="wikitable"
|+
!Zone
!Shed Name
!Code
!Quantity
|-
|rowspan="1" |[[Central Railway zone|Central Railway]]
|[[Electric Loco Shed, Bhusawal|Bhusaval]]
|'''BSL'''
|<big>43</big>
|-
|rowspan="2" |[[Eastern Railway zone|Eastern Railway]]
|[[Electric Loco Shed, Asansol|Asansol]]
|'''ASN'''
|<big>18</big>
|-
|[[Electric Loco Shed, Howrah|Howrah]]
|'''HWH'''
|<big>73</big>
|-
|rowspan="2" |[[East Central Railway zone|East Central Railway]]
|[[Pt. Deen Dayal Upadhyay Junction|Pt. Deen Dayal Upadhyay]]
|'''DDU'''
|<big>42</big>
|-
|[[Diesel Loco Shed, Samastipur|Samastipur]]
|'''SPJ(D)'''
|<big>50</big>
|-
|rowspan="1" |[[East Coast Railway zone|East Coast Railway]]
|[[Electric Loco Shed, Visakhapatnam|Visakhapatnam]]
|'''VSKP'''
|<big>21</big>
|-
|rowspan="1" |[[Northern Railway zone|Northern Railway]]
|[[Tughlakabad railway station|Tughlakabad]]
|'''TKD(D)'''
|<big>39</big>
|-
|rowspan="1" |[[North Central Railway zone|North Central Railway]]
|[[Electric Loco Shed, Jhansi|Jhansi]]
|'''JHS'''
|38
|-
|rowspan="1" |[[North Eastern Railway zone|North Eastern Railway]]
|[[Gonda Junction railway station|Gonda]]
|'''GD(D)'''
|<big>23</big>
|-
|rowspan="3" |[[Southern Railway zone|Southern Railway]]
|[[Electric Loco Shed, Arakkonam|Arakkonam]]
|'''AJJ'''
|<big>90</big>
|-
|[[Electric Loco Shed, Erode|Erode]]
|'''ED'''
|<big>58</big>
|-
|[[Diesel Loco Shed, Erode|Erode]]
|'''ED(D)'''
|<big>3</big>
|-
|rowspan="1" |[[South Central Railway zone|South Central Railway]]
|[[Electric Loco Shed, Vijayawada|Vijayawada]]
|'''BZA'''
|<big>68</big>
|-
|rowspan="2" |[[South Eastern Railway zone|South Eastern Railway]]
|[[Santragachi Junction railway station|Santragachi]]
|'''SRC'''
|<big>35</big>
|-
|[[Kharagpur Junction railway station|Kharagpur]]
|'''KGP(D)'''
|<big>25</big>
|-
|rowspan="2" |[[Western Railway zone|Western Railway]]
|[[Electric Loco Shed, Valsad|Valsad]]
|'''BL'''
|<big>62</big>
|-
|[[Diesel Loco Shed, Vatva|Vatva]]
|'''VTA(D)'''
|<big>10</big>
|-
|rowspan="1" |[[West Central Railway zone|West Central Railway]]
|[[Electric Loco Shed, Itarsi|Itarsi]]
|'''ET'''
|<big>75</big>
|-
| colspan="3" |'''<big>Total locomotives active as of 01-07-2021<ref>{{Cite web|title=e-Locos|url=http://elocos.railnet.gov.in/Holding/holding.html}}</ref></big>'''
|<big>'''773'''</big>
|}

==See also==

*[[Indian Railways]]
*[[Locomotives of India]]
*[[Rail transport in India]]

==References==

===Notes===
{{reflist}}

===Bibliography===
{{refbegin}}
*{{Hughes-IndianLocos4}}
{{refend}}

{{commons category|Indian locomotive class WAP4}}
{{Broad gauge locomotives of India}}

[[Category:Electric locomotives of India]]
[[Category:25 kV AC locomotives]]
[[Category:Co-Co locomotives]]
[[Category:Railway locomotives introduced in 1994]]
[[Category:5 ft 6 in gauge locomotives]]

Indian locomotive class WAP-4 - Revision history

Zuko: added info

2409:4041:D97:1886:0:0:2149:1401: /* Locomotive sheds */