Indian locomotive class WCM-5

Indian locomotive class WCM-5
A WCM-5 hauling the Deccan Queen
Type and origin Power type Electric Designer CLW Builder CLW Build date 1961-1963 Total produced 21
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 diameter New: 1,220 mm (4 ft 0 in), Half worn: 1,182 mm (3 ft 10+1⁄2 in) Full worn: 1,144 mm (3 ft 9 in) Wheelbase 2,337 mm (7 ft 8 in) Length: ​  • Over couplers 20.168 m (66 ft 2 in)  • Over body 18.898 m (62 ft 0 in) Width 3.200 m (10 ft 6 in) Height 4.293 m (14 ft 1 in) Frame type 3 Axle fabricated frame Axle load 20.30 tonnes (19.98 long tons; 22.38 short tons) Loco weight 124.00 tonnes (122.04 long tons; 136.69 short tons) Sandbox cap. 16 sandboxes each Power supply 110 V DC Electric system/s 1.5 kV DC Overhead Current pickup(s) Pantograph Traction motors HS-373-BR ​  • Rating 1 hour 765A  • Continuous 620A Gear ratio 16:59 Loco brake Air/Hand, Regenerative braking Train brakes Vacuum Compressor 7kg/cm² Safety systems Slip control, Over voltage relay, No volt relay, Low pressure governor, Vacuum governor Train parting alarms, and Brake cylinder cutoff valve
Performance figures Maximum speed 120 km/h (75 mph) Power output: ​  • Starting Max: 3,700 hp (2,760 kW)  • 1 hour Max: 3,700 hp (2,760 kW)  • Continuous Max: 3,170 hp (2,360 kW) Tractive effort: ​  • Starting 31,000 kgf (300 kN)  • 1 hour 21,772 kgf (210 kN)  • Continuous 17,690 kgf (170 kN) Factor of adh. 0.25
Career Operators Indian Railways Numbers 20083-20103 Official name Lokmanya (for first locomotive) Locale Central Railways Delivered 1960 First run 1961 Last run January 2000 Retired Early 2000s Preserved 1 Disposition One preserved, remainder scrapped

The Indian locomotive class WCM-5 is a class of 1.5 kV DC electric locomotives that was developed in 1961 by Chittaranjan Locomotive Works (CLW) for Indian Railways. The model name stands for broad gauge (W), Direct Current (C), Mixed traffic (M) engine, 5th generation (5). The WCM-5 was the first locomotive of any type to be fully developed and built in India, entering service in 1961.^{[citation needed]} A total of 21 WCM-5 locomotives were built at CLW between 1961 and 1963.

The WCM-5 served both passenger and freight trains for nearly 40 years. In 1998, the last WCM-5 locomotive ran with the Indrayani Express. With the introduction of more modern locomotives and 25 KV AC electrification, all were withdrawn in the early 2000s after repeated failures. After withdrawal, one locomotive was put on display at the Kolkata Rail Museum, while the rest of the locomotives have been scrapped.^{[citation needed]}