| Indian locomotive class WCM-1 | |
| Powertype: | Electric |
| Designer: | Vulcan Foundry, English Electric |
| Builder: | English Electric |
| Ordernumber: | M3559/53261/51 |
| Buildmodel: | EM/1 |
| Builddate: | 1954-1955 |
| Totalproduction: | 7 |
| Rebuilder: | Electric Loco Shed, Kalyan |
| Rebuilddate: | 1968 |
| Numberrebuilt: | 7 |
| Aarwheels: | C-C |
| Uicclass: | Co′Co′ |
| Britishclass: | Co-Co |
| Bogies: | 3 Axle fabricated frame, Swing bolster with Equalizer beams |
| Wheeldiameter: | New: 12200NaN0, Half worn: 1182abbr=onNaNabbr=on and Full worn: 11140NaN0 |
| Wheelbase: | 24000NaN0 |
| Over Couplers: | 20.836abbr=onNaNabbr=on |
| Body: | 19.5abbr=onNaNabbr=on |
| Width: | 3.169abbr=onNaNabbr=on |
| Height: | 4.292abbr=onNaNabbr=on |
| Frametype: | 3 Axle fabricated frame |
| Sandcap: | 8+8 sandboxes |
| Powersupply: | 110 V DC |
| Electricsystem: | 1.5 kV DC Overhead |
| Collectionmethod: | pantograph |
| Tractionmotors: | E.E.514/2C |
| T/M Amps 1 Hr: | 700A |
| T/M Amps Cont: | 600A |
| Gear Ratio: | 16:59 |
| Multipleworking: | Not possible |
| Locobrakes: | Air/Hand, Regenerative braking |
| Trainbrakes: | Vacuum |
| Compressorcap: | 7 kg/cm |
| Safety: | Slip control, Over voltage relay, No volt relay, Earth fault relay, Low pressure governor, Train parting alarms, and Brake cylinder cutoff valve |
| Maxspeed: | 120.50NaN0 |
| Poweroutput Start: | Max:3700-1NaN-1 |
| Poweroutput 1 Hr: | Max:3700-1NaN-1 |
| Poweroutput Cont: | Max:3170-1NaN-1 |
| T/E Starting: | 31000-1NaN-1 |
| T/E 1 Hr: | 21772-1NaN-1 |
| T/E Continuous: | 17690-1NaN-1 |
| Operator: | Indian Railways |
| Operatorclass: | EM/1 |
| Fleetnumbers: | 20066-20072 |
| Locale: | Central Railways |
| Deliverydate: | 1954-1955 |
| Firstrundate: | 1955 |
| Lastrundate: | 1999 |
| Retiredate: | January 2000 |
| Withdrawndate: | April 2001 |
| Preservedunits: | 1 |
| Scrapdate: | May 2001 |
| Currentowner: | Chennai Rail Museum |
| Disposition: | One 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.
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.
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.