Indian locomotive class WCM-1

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Indian locomotive class WCM-1
An-Rail-Engine-display-in-ICF-Rail-Museum-Chennai.JPG
A WCM-1 preserved at ICF Rail Museum, Chennai
Type and origin
Power typeElectric
Designer Vulcan Foundry, English Electric
Builder English Electric
Order numberM3559/53261/51
ModelEM/1
Build date1954-1955
Total produced7
Rebuilder Electric Loco Shed, Kalyan
Rebuild date1968
Number rebuilt7
Specifications
Configuration:
​
 •  AAR C-C
 •  UIC Co′Co′
 • Commonwealth Co-Co
Gauge 5 ft 6 in (1,676 mm)
Bogies 3 Axle fabricated frame, Swing bolster with Equalizer beams
Wheel diameterNew: 1,220 mm (4 ft 0 in),
Half worn: 1,182 mm (3 ft 10+1⁄2 in) and
Full worn: 1,114 mm (3 ft 8 in)
Wheelbase 2,400 mm (7 ft 10 in)
Length:
​
 • Over couplers20.836 m (68 ft 4+5⁄16 in)
 • Body19.5 m (63 ft 11+11⁄16 in)
Width3.169 m (10 ft 4+3⁄4 in)
Height4.292 m (14 ft 1 in)
Frame type 3 Axle fabricated frame
Axle load 20.83 tonnes (20.50 long tons; 22.96 short tons)
Loco weight123.98 tonnes (122.02 long tons; 136.66 short tons)
Sandbox cap.8+8 sandboxes
Power supply 110 V DC
Electric system/s 1.5 kV DC Overhead
Current pickup(s) pantograph
Traction motors E.E.514/2C
 • Rating 1 hour700A
 • Continuous600A
Gear ratio16:59
MU working Not possible
Loco brake Air/Hand, Regenerative braking
Train brakes Vacuum
Compressor7 kg/cm
Safety systemsSlip control, Over voltage relay, No volt relay, Earth fault relay, Low pressure governor, Train parting alarms, and Brake cylinder cutoff valve
Performance figures
Maximum speed120.5 km/h (75 mph)
Power output:
​
 • StartingMax:3,700 hp (2,760 kW)
 • 1 hourMax:3,700 hp (2,760 kW)
 • ContinuousMax:3,170 hp (2,360 kW)
Tractive effort:
​
 • Starting31,000 kgf (300 kN)
 • 1 hour21,772 kgf (210 kN)
 • Continuous17,690 kgf (170 kN)
Career
Operators Indian Railways
Class EM/1
Numbers20066-20072
LocaleCentral Railways
Delivered1954-1955
First run1955
Last run1999
RetiredJanuary 2000
WithdrawnApril 2001
Preserved1
ScrappedMay 2001
Current owner Chennai Rail Museum
DispositionOne is preserved, rest all have been scrapped.

The Indian locomotive class WCM-1 is a class of 1.5 kV DC electric locomotives that was developed in 1954 by Vulcan Foundry and English Electric for Indian Railways. The model name stands for broad gauge (W), Direct Current (C), Mixed traffic (M) engine, 1st generation (1). They entered service in 1955. A total of 7 WCM-1 locomotives were built in England between 1954 and 1955.

Contents

The WCM-1 served both passenger and freight trains for over 45 years. With the introduction of more modern types of locomotives and 25 KV AC electrification, all were withdrawn by the early 2000s after repeated failures. Today only one locomotive has been preserved; all others were scrapped.

History

The WCM-1 were designed in the mid 1950s with the intent for the Indian Railways (IR) to remove the aging fleet of WCP-1, WCP-2, WCP-3 and WCP-4 class locomotives working on the Central Railway (CR) . [1] Thus IR purchased seven 1500 V DC electric locomotives from English Electric and Vulcan Foundry, the latter having previously supplied steam locomotives to India. They were manufactured in England and shipped to India in 1954-1955.

These locomotives were the first mixed class electric locomotive to roam India as well as the first electric locomotive with now common Co-Co wheel arrangement. [2] They were also the longest serving non steam locomotives in India until the arrival of the WCG-2, WCAM-1, WCAM-2, WCM-6, WCAM-3 and WCAG-1 class. Initially the WCM-1 class were known as EM/1 class. They had a distinct appearance, with their large size and round noses. They had their cab doors placed in the middle of the body instead of being near the cab.

The WCM-1 locomotives were used on many express trains such as the Deccan Queen, Indrayani Express and as well as on freight duties. In 1968, the placement of the entry doors were moved to near the cab for better practicality. The Deccan Queen had WCM-1 with a matching livery until the 1990s. In the mid 1990s the aging WCM-1s began to fail regularly, causing disruption on train services. Thus Central Railways decided to withdraw these locomotives from service and by 2000, all units were withdrawn with only one being preserved.

Preserved Examples

ClassManufacturerLoco NumberPrevious shedNameLiveryLocationref
WCM-1 Vulcan Foundry and English Electric 20068Kalyan (KYN)White/blue with red liningPreserved at Chennai Rail Museum [3]

Former sheds

See also

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References

  1. ↑ Gudgin, D.S.E. (1976). Vulcan Foundry Locomotives 1832–1956. Truro: Bradford Barton. ISBN   978-0-85153-215-8.
  2. ↑ "Refer pg 252" (PDF).
  3. ↑ "Railway Museum Chennai". erail.in. Retrieved May 21, 2020.
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