Indian locomotive class WAG-9

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WAG-9
CLW made WAG-9HC #39447 at Dankuni yard.
Type and origin Power type Electric Builder Chittaranjan Locomotive Works, Bharat Heavy Electricals Limited, Banaras Locomotive Works, Patiala Locomotive Works Build date 1995-present Total produced 5641 as of November 2024
Specifications Configuration: ​  • UIC Co′Co′ Gauge 5 ft 6 in (1,676 mm) Bogies Adtranz Fabricated Flexicoil IV Wheel diameter New: 1,092 mm (3 ft 7 in), Half worn: 1,054 mm (3 ft 5+1⁄2 in) Full worn: 1,016 mm (3 ft 4 in) Wheelbase 15.7 m (51 ft 6 in) Length 20.562 m (67 ft 5+1⁄2 in) Width 3.152 m (10 ft 4+1⁄8 in) Height 4.525 m (14 ft 10+1⁄8 in) Axle load WAG-9 : 20.5 tonnes (20.2 long tons; 22.6 short tons) WAG-9H/Hi/9i : 22.0 tonnes (21.7 long tons; 24.3 short tons) Loco weight WAG-9 : 123 tonnes (121 long tons; 136 short tons) WAG-9H/9Hi/9i/9HH : 132 tonnes (130 long tons; 146 short tons) WAG-9TWIN/EF12K: 264 tonnes (260 long tons; 291 short tons) Electric system/s 25 kV 50 Hz AC Overhead Current pickup(s) dual pantographs Traction motors WAG-9/9H/9i : Adtranz 6FRA6068 MU working 2 Loco brake Air and Regenerative Train brakes Air Safety systems Slip/slide control, Main overload relay, Over voltage relay, No volt protection, Vigilance Control Device, Fire Detection Equipment, Fire Extinguishers and Earth fault relay
Performance figures Maximum speed 100 km/h (62 mph) Power output WAG-9 Original : 6,120 hp (4,564 kW) WAG-9HC : 6,120 hp (4,564 kW) WAG-9HH/EF9K : 9,000 hp (6,711 kW) WAG-9TWIN/EF12K : 12,000 hp (8,948 kW) Tractive effort WAG-9 Starting Effort : 475 kN (107,000 lbf) WAG-9H/HH Starting Effort : 510 kN (110,000 lbf) WAG-9TWIN Starting Effort:1,040 kN (230,000 lbf)
Career Operators Indian Railways Numbers Starting from 31000-31999, 32000-32999, 33000-33999, 38000+ & 51001+ CLW 34001+ BHEL 41000-41500 & 43000+ BLW 41501+ PLW Locale All Over India Disposition Active

The Indian locomotive class WAG-9 is a class of 25 kV AC electric locomotives that was developed in 1995 by ABB for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Goods traffic (G), 9th generation (9) locomotive. They entered service in 1996. A total of 5140 WAG-9 have been built at Chittaranjan Locomotive Works (CLW), with more units being built at Banaras Locomotive Works (BLW), Bharat Heavy Electricals Limited (BHEL) and Patiala Locomotive Works (PLW). It was the most powerful freight locomotive in the Indian Railways fleet until the introduction of the WAG-12.

The WAG-9 is one of the most successful locomotives of Indian Railways,^{[peacock prose]} serving freight trains since its introduction in 1995. A passenger variant of the WAG-9 was developed, namely the WAP-7 locomotive, by modifying the gear ratio to pull lighter loads at higher speeds. Nowadays,^[when?] WAG-9 locomotives are commonly used to haul freight trains.