Indian locomotive class WDP-3A

Specifications
Specifications
Configuration:;
• AAR	Co-Co
• UIC	Co′Co′
Gauge	1,676 mm (5 ft 6 in)
Bogies	Flexicoil Mark V fabricated bogies
Wheel diameter	1,092 mm (3 ft 7 in)
Wheelbase	12.834 m (42 ft 1+1⁄4 in)
Length	18.62 m (61 ft 1+1⁄8 in)
Width	2.964 m (9 ft 8+3⁄4 in)
Height	4.185 m (13 ft 8+3⁄4 in)
Axle load	17,500 kg (38,600 lb)
Loco weight	117 t (115 long tons; 129 short tons)
Fuel type	Diesel
Fuel capacity	5,000 L (1,100 imp gal; 1,300 US gal)
Prime mover	ALCO 251-C
RPM range	400 - 1050 rpm
Engine type	V16 Diesel engine
Aspiration	ABB VTC304-15 or Napier NA 295 IR turbocharger
Traction motors	Bharat Heavy Electricals TA 10102 CW (new), BHEL TG 10931 AZ(old)
Cylinders	16
Cylinder size	228 mm × 266 mm (8.98 in × 10.47 in) ; bore x stroke
Transmission	Diesel electric
MU working	2
Train brakes	Air

Type and origin
Type and origin
Power type	Diesel Electric
Builder	Banaras Locomotive Works; Diesel-Loco Modernisation Works
Serial number	WDP-2-1 to WDP-2-44
Model	ALCO DL560C variant
Build date	October 4, 1998, to February 1, 2001
Total produced	44
Rebuilder	Diesel-Loco Modernisation Works, Patiala

WDP-3A
WDP-3A
	GOC based WDP-3A with passenger train
Power type
Type and origin
Power type	Diesel Electric
Builder	Banaras Locomotive Works; Diesel-Loco Modernisation Works
Serial number	WDP-2-1 to WDP-2-44
Model	ALCO DL560C variant
Build date	October 4, 1998, to February 1, 2001
Total produced	44
Rebuilder	Diesel-Loco Modernisation Works, Patiala
Configuration:;
Specifications
Configuration:;
• AAR	Co-Co
• UIC	Co′Co′
Gauge	1,676 mm (5 ft 6 in)
Bogies	Flexicoil Mark V fabricated bogies
Wheel diameter	1,092 mm (3 ft 7 in)
Wheelbase	12.834 m (42 ft 1+1⁄4 in)
Length	18.62 m (61 ft 1+1⁄8 in)
Width	2.964 m (9 ft 8+3⁄4 in)
Height	4.185 m (13 ft 8+3⁄4 in)
Axle load	17,500 kg (38,600 lb)
Loco weight	117 t (115 long tons; 129 short tons)
Fuel type	Diesel
Fuel capacity	5,000 L (1,100 imp gal; 1,300 US gal)
Prime mover	ALCO 251-C
RPM range	400 - 1050 rpm
Engine type	V16 Diesel engine
Aspiration	ABB VTC304-15 or Napier NA 295 IR turbocharger
Traction motors	Bharat Heavy Electricals TA 10102 CW (new), BHEL TG 10931 AZ(old)
Cylinders	16
Cylinder size	228 mm × 266 mm (8.98 in × 10.47 in) ; bore x stroke
Transmission	Diesel electric
MU working	2
Train brakes	Air
Maximum speed
Performance figures
Maximum speed	120 km/h (75 mph)
Power output	WDP-3A: 3100 HP,
Tractive effort	30.45 t (30 long tons; 34 short tons)
Operators
Career
Operators	Indian Railways
Power class	Diesel
Numbers	15501-15544
Nicknames	Toasters, Pushpak
Locale	SR (GOC), NR (TKD) and CR (KYN)
Delivered	July 31, 1998
Preserved	1 earmarked
Disposition	active (few scrapped)

The Indian locomotive class WDP-3A, colloquially nicknamed the Toaster, is a class of diesel-electric locomotive that was developed in 1998 by Banaras Locomotive Works, Varanasi for Indian Railways. The model name stands for broad gauge (W), Diesel (D), Passengers traffic (P) locomotive with 3100 horsepower (3A). The WDP-3A is a later classification of earlier WDP-2. They entered service in 1998. A total of 44 were built between 1998 and 2001.

They are the Fastest ALCo based locomotive found in India with a Top speed of 160 km/h, on par with the premier Electric Locomotives. The WDP-3A served IR for over 25 years. A significant number of these locomotives are still in use, both on mainline and departmental duties. As of June 2022, few of the locomotives still retain "operational status" on the mainline as WDP-3A, with further examples having been Scrapped.

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