Indian locomotive class YCG-1

The YCG-1 was a class of electric locomotives built in the 1930s for use on the metre-gauge electrified lines in the Chennai area. The name stands for (Y)metre gauge, (C)DC electric, (G)goods. With the conversion of the lines to 25 kv AC, all were withdrawn. One is preserved at National Rail Museum in New Delhi.

Indian locomotive class YCG-1
A YCG-1 preserved at NRM, New Delhi
Type and origin Power type Electric Designer Vulcan Foundry, English Electric Builder English Electric Order number M3559/53261/51 Model EM/1 Build date 1930 Total produced 7 Rebuilder Electric Loco Shed, Chennai Rebuild date 1968 Number rebuilt 7
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) and Full worn:1,114 mm (3 ft 8 in) Wheelbase 2,400 mm (7 ft 10 in) Length: ​  • Over couplers 20.836 m (68 ft 4 ^5⁄16 in)  • Body 19.5 m (63 ft 11 ^11⁄16 in) Width 3.169 m (10 ft 4 ^3⁄4 in) Height 4.292 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 weight 123.98 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 hour 700A  • Continuous 600A Gear ratio 16:59 MU working Not possible Loco brake Air/Hand, Regenerative braking Train brakes Vacuum Compressor 7 kg/cm Safety systems Slip control, Over voltage relay, No volt relay, Earth fault relay, Low pressure governor, Train parting alarms, and Brake cylinder cutoff valve
Performance figures Maximum speed 120.5 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)
Career Operators Indian Railways Class EM/1 Numbers 20066-20072 Locale Central Railways Delivered 1930-193x First run 1930 Last run 1965 Withdrawn 1965 Preserved 1 Scrapped 1965 Current owner National Rail Museum Disposition One is preserved, rest all have been scrapped.

History

These were used in Chennai with 1,5 kV DC overhead wires. Goods locos used on the early DC electrified network of SR, and later withdrawn when SR switched to AC traction. They had a provision for coupling to 'ET' class 4-wheeled battery tenders to allow operating on unelectrified sidings, loop lines, etc. These locos had a roughly rectangular, box-like body with a cab at either end, with a short platform extending from each cab. The cabs each had a door opening on to the platform, and a window (on the right) at the ends. The two bogies had interconnecting linkages to allow easier negotiation of sharp curves. Two 'diamond' style pantographs for current collection. There were only seven of these locos; one is now preserved at the NRM (#21900).

Locomotive shed

• All the locomotives of this class has been withdrawn from service.

See also

• Locomotives of India