Ajendra69 at 04:51, 28 May 2022

2022-05-28T04:51:59Z

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{{Use dmy dates|date=May 2019}}
{{Use Indian English|date=May 2019}}
{{Infobox locomotive
| name = WCAG–1
| image = File:KYN WCAG1 twins.jpg
| caption = Kalyan based WCAG-1 twins roaming light near Wardha Jn.
| alt =
| builder = [[Bharat Heavy Electricals Limited]]
| serialnumber =
| builddate = 1999–2000
| uicclass = Co'Co'
| gauge = {{RailGauge|5ft6in|lk=on}}
| bogies = Alco High-Adhesion bogies
| wheeldiameter = New: {{convert|1029|mm|ftin|0|abbr=on}} Half-worn: {{convert|1055|mm|ftin|abbr=on|frac=2}} Full-worn:
{{convert|1016|mm|ftin|0|abbr=on}}
| wheelbase = {{convert|13380|mm|ftin|abbr=on}}
| length = {{convert|19880|mm|ftin|0|abbr=on}}
| width = {{convert|3000|mm|ftin|abbr=on|frac=4}}
| height = {{convert|4100|mm|ftin|0|abbr=on}}
| axleload = {{convert|21.33|t}}
| locoweight = {{convert|128|t}}
| gear ratio = 16:65
| tractionmotors = 6 Hitachi HS15250A
| multipleworking = 3
 
| tractiveeffort = Starting : {{convert|300|kN|abbr=on}}
| locobrakes = [[Railway air brake|Air]] and [[Regenerative brake|Regenerative]]
| trainbrakes = Air
| safety = TPWS (Train Protection and Warning System), Vacuum Control, Slip/Slide Control, Main Overload Relay, Motor Over Load Relay, No Volt Relay, Over Voltage Protection and Earth Fault Relay, Oil Pressure Governor
| deliverydate = 1999-2000
| firstrundate = 1999
| disposition = Active
| powertype = Electric
| poweroutput = {{convert|4600|hp|abbr=on}} DC {{convert|5000|hp|abbr=on}} AC
| operator = Central Railways
| fleetnumbers = '''21970 - 21981'''
| totalproduction = '''12'''
| electricsystem = {{25 kV 50 Hz}} 1.5 [[Volt|kV]] [[Direct current|DC]] (past)
| maxspeed = {{convert|100|km/h|abbr=on}} DC, {{convert|100|km/h|abbr=on}} AC
| collectionmethod = [[Pantograph (rail)|Pantographs]] one each for AC and DC(past) (both now used for AC)
| locale = Central Railways ([[Kalyan Junction railway station|Kalyan]])
}}

The Indian locomotive class '''WCAG–1''' is a class of dual-power AC/DC series [[locomotive]]s used in the [[Indian Railways]] system. They are the only class of the WCAG locomotives. They were specifically designed for use by [[Central Railway zone|Central Railways]] in the Ghat section towards [[Nashik]] and [[Pune Junction railway station|Pune]].

== History ==

The WCAG-1 locomotives were developed after Central Railways faced a massive locomotive crisis in the 1990s. During this period, many of the WCM locomotives, which began to show their age, suffered several failures. As a result, CR had a tough time in maintaining train schedules, which led to the demand for a locomotive similar to the [[Indian locomotive class WCAM 2/2P|WCAM-2/2P]], which was already successful in the [[Western Railway zone|Western Railways]]. Thus the WCAG-1 was introduced along with the WCAM-3, with more power and traction.

The locomotive class was jointly developed by RDSO and BHEL in 1997. Components were shared with the WCAM-3 locos (see below). Co-Co fabricated bogies (High-Adhesion—shwered with WCAM-3, WAG-7, WDG-2, etc.) with secondary suspension. Monocoque underframe. Air brakes were original equipment. They were originally manufactured under a BOLT (build-own-lease-transfer) contract with BHEL, and were probably still owned by BHEL rather than by IR. Axle-hung, nose-suspended, force ventilated, taper roller bearings Speed control by tap changers in AC mode and resistance notching in DC mode. Motors can be placed in different series-parallel combinations. Auxiliaries from Elgi, S F India, Best, Gresham & Craven, etc.

Static converter from ACEC for auxiliary supply. In DC mode, rheostatic braking by self-excitation of traction motors available until 17 km/h. Elgi compressor, other auxiliaries from S F India. Rated for 105 km/h in DC mode (AC mode rated speed was quoted at 120 km/h although it can figuratively go up to 125 km/h). But these locomotives' maximum speeds have been restricted to 100 km/h. Traction motor configurations as in the WCAM-1/2 and WAM-4 (all 6 in series, 2S 3P, or all parallel—the latter was the only one used under AC traction, enforced now by modifications to the locos).

=== Current usage ===

The class are in active service in the [[Central Railway zone]]. CR uses WCAG-1 locos on Mumbai-Pune and Mumbai-Igatpuri sections which had ghat portions as well as speed restrictions of about 80 km/h.[http://www.irfca.org/gallery/Events/cracdcjan13/] WCAG-1 locomotives now also serve in routes in and around [[Nagpur railway station|Nagpur]], [[Bhusaval Junction railway station|Bhusaval]]. Due to exclusivity in operation/maintenance of these locomotives, they do not go beyond the Central Railway's zone limits. These dual-traction models deliver 4600 hp in DC mode and 5000 hp in AC mode, and post 25 kV transformation, WCAG-1s were fully transformed into pure AC locomotives, and the performance was even more improved.

Freight rakes double-headed by WCAG-1 (upgraded models) are a common sight on the ghat sections. MU operation possible with 3 (4?) units.

== Locomotive shed ==
{| class="wikitable"
|-
! Zone !! Name !! Shed Code !! Quantity
|-
| [[Central Railway zone|Central Railway]] || [[Electric Loco Shed, Kalyan|Kalyan]] || KYN || 12
|-
| colspan="3" |'''Total locomotives active as of 01-07-2020'''<ref>{{Cite web|title=e-Locos|url=http://elocos.railnet.gov.in/Holding/holding.html}}</ref>|| 12
|}


==Technical specifications<ref name=IRFCA>[http://www.irfca.org/faq/faq-loco-electric-dc.html#WCAM-2 WCAM-2] at Indian Railways Fan Club</ref>==

{| class="wikitable" style="text-align:center; width:98%;"
|-
!width=16%| '''Class'''
!width=21%| '''WCAG–1'''
|-
|style="text-align:centre;"|'''Year'''
|1999-2000
|-
|style="text-align:centre;"|'''Maker'''
| [[Bharat Heavy Electricals|BHEL]]
|-
|style="text-align:centre;"|'''Traction Motors'''
||Hitachi HS15250A. Axle-hung, nose-suspended, force-ventilated.
|-
|style="text-align:centre;"|'''Transformer'''
| BHEL 5400 kVA. 32 taps
|-
|style="text-align:centre;"|'''Power(hp)'''
|4600 DC / 5000 AC Max., 5000 AC cont.
|-
|style="text-align:centre;"|'''Rectifiers'''
| Two silicon rectifier units D1800N44 (Siemens), 16 cells per bridge. 1000 V / 3600 A.
|-
|style="text-align:centre;"|'''Speed'''
|100 DC / 100 AC
|-
|style="text-align:centre;"|'''Weight(tonnes)'''
|128
|}

==See also==

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

==References==
{{reflist}}

== External links ==
* http://www.irfca.org/gallery/Events/cracdcjan13/
* http://www.irfca.org/faq/faq-loco-electric-dc.html#acdc

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

[[Category:Electric locomotives of India]]
[[Category:1500 V DC locomotives]]
[[Category:25 kV AC locomotives]]
[[Category:5 ft 6 in gauge locomotives]]
[[Category:Multi-system locomotives]]
[[Category:BHEL locomotives]]

Indian locomotive class WCAG-1 - Revision history

Ajendra69 at 04:51, 28 May 2022