Indian locomotive class WAP-5

The Indian locomotive class WAP-5 is a class of electric locomotives used by Indian Railways. The first ten locomotives were imported from Adtranz in Switzerland in 1995 and later manufactured by Chittaranjan Locomotive Works in India. On 3 July 2014, a WAP-5 set an Indian speed record by hauling a train between Delhi and Agra at a speed of 160 km/h (99 mph).^[2] The locomotive has regenerative braking, flexible gear coupling, wheel-mounted disc brakes, and a potential for speed enhancement to 200 km/h (120 mph). Braking systems include 160 kN (36,000 lbf) regenerative brakes, disc brakes, automatic train air brakes and a charged spring parking brake.

WAP-5
Vadodara based WAP-5 hauling the Gujarat Express
Type and origin Power type Electric Builder Chittaranjan Locomotive Works (India) Adtranz (Switzerland) Model Lok 2000 Build date 1995–present Total produced 249 as of June 2025
Specifications Configuration: ​  • UIC Bo'Bo' Gauge 5 ft 6 in (1,676 mm) Bogies Henschel Flexifloat 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 13,000 mm (42 ft 8 in) Length 18,162 mm (59 ft 7 in) Width 3,142 mm (10 ft 3+3⁄4 in) Height 4,237 mm (13 ft 11 in) Axle load 19.5 tonnes (19.2 long tons; 21.5 short tons) Loco weight 78 tonnes (77 long tons; 86 short tons) Electric system/s 25 kV 50 Hz AC Overhead Current pickup(s) Pantograph Traction motors 4 ABB 6FXA 7059 Gear ratio 67:35:17 (160 km/h) 59:35:19 (180 km/h) MU working 2 Loco brake Air and Regenerative Train brakes Air Safety systems TPWS (Train Protection and Warning System), Vigilance Control, Slip/Slide Control, Main Overload Relay, No Volt Relay, Over Voltage Protection and Earth Fault Relay
Performance figures Maximum speed Operational: 160 km/h (99 mph) Trials: 184 km/h (114 mph) WAP-5A: 200 km/h (124 mph)[1] Power output 6,000 hp (4,474 kW) Tractive effort Starting: 258 kN (58,000 lbf)
Career Operators Indian Railways Numbers 30000-30200 & 35001+ Delivered 1995-1996 First run 1997 Disposition Active

Locomotive sheds

Last updated:- June 2025^[3]

Zone	Shed	Shed Code	Quantity	Introduction Year
Central Railway	Kalyan	KYNE	6	2025
Eastern Railway	Howrah	HWHE	40	2019
Northern Railway	Ghaziabad	GZBE	133	1997
Southern Railway	Royapuram	RPME	4	2025
Western Railway	Vadodara	BRCE	66	2011
Total			249

Variants

Aerodynamic Ghaziabad WAP-5 30164 hauling the Rupashi Bangla Express

In October 2015, a WAP-5A locomotive (no. 30086) was rolled-out with a gear ratio of 59:35:19 capable of speeds up to 200 km/h (120 mph) for trial runs. In March 2018, a WAP-5 locomotive (no. 30136) with an enhanced power output of 4,500 kilowatts (6,000 hp) was released which was later adopted as a standard based on successful trials. Some locomotives of this class are equipped with "Head On Generation" (HOG) in which electric power from the locomotive's pantograph is transferred to the coaches instead of End Of Generation where a power car equipped with diesel generator is provided at either end of the train rake to supply power.^[4][5][6] The first WAP-5 locomotive (no. 30140) with HOG was rolled by CLW in June 2018.^{[citation needed]}

One of the Tejas WAP-5s hauling the Thiruvananthapuram North-Indore Weekly Express

In October 2020, two WAP-5 locomotives (no. 35012 and 35013) were given an asymmetric body design with an aerodynamic profile for one cab and a blunt profile for another cab at the opposite end, which is intended to be semi-permanently coupled with a train in a push-pull configuration for Tejas Express services. The two locomotives have a power output of 6,000 horsepower (4,500 kW) and will have a maximum speed of 160 kilometres per hour (99 mph).^[7] Two modified WAP-5 locomotives (35027 and 35028) are used to haul the Amrit Bharat Express in a similar push-pull configuration.^[8][9]

Amrit Bharat WAP-5

Technical specifications

A 24 coach (1430 t) passenger rake can be accelerated to 110 km/h in 312.1 seconds (over 6 Km), to 120 km/h in 402sec (6.9km); and to 130km/h in 556 sec (14.2km) by a WAP5.^[10][11] Specifications are as follows:^[12]

Technical specifications

General Information
Gauge	Broad gauge 1,676 mm (5 ft 6 in)
Line voltage	25000 V
Type of current	Alternating Current (AC)
Axle load	19.5 tonnes (19.2 long tons; 21.5 short tons)
AAR classification	Bo-Bo
Length over head-stocks	16,880 mm (55 ft 4+5⁄8 in)
Length over buffers	18,162 mm (59 ft 7 in)
Bogie wheel base	2,800 mm (9 ft 2+1⁄4 in)
Wheel base	13,000 mm (42 ft 7+3⁄4 in)
Body width	3,142 mm (10 ft 3+3⁄4 in)
Cab length	2,434 mm (7 ft 11+7⁄8 in)
Pantograph locked down height	4,237 mm (13 ft 10+3⁄4 in)
Bogie center distance	10,200 mm (33 ft 5+5⁄8 in)
Height over pantograph	4,237 mm (13 ft 10+3⁄4 in)
Body width	3,142 mm (10 ft 3+3⁄4 in)
Coupling	Central Buffer Couplers (CBC)
Surface	corrugated or plain
Traction motors
Type	6FXA 7059 3-phase asynchronous motors, 1,166 kW (1,563 hp), 2180 V, 370 A continuous, 396 A for 1 hr, 540 A max, 1585 rpm continuous, 3174 rpm max, Weight 1990 kg. Forced-air ventilation, partly suspended. Torque 6930/10000 N-m. 96% efficiency.
Make	ABB
Traction motors insulation	Class 200
Traction Motor's Short Time Overload Rating	1150 kW, 1540 V, 540 A, 1107 rpm
Traction Motor's 1 hour rating	1150 kW, 2044 V, 396 A, 1485 rpm
Traction Motor's Continuous Rating	1150 kW, 2180 V, 370 A, 1585 rpm
Number of Traction Motors	4
Gear Ratio	67:35:17 (160 km/h or 99 mph) 59:35:19 (200 km/h or 120 mph)
Transformer
Type	ABB LOT-7500/LOT-7775: {7475 kVA/7775 kVA, 25 kV, 299A-primary/311A}-primary, {4x1269 V, 4x1450 kVA, 4x1142 A}-secondary, {1000 V, 334 kVA, 334 A}-Auxiliary, {960 V, 2x622.5 kVA, 2x648 A}- Hotel Load and {1154 V, 400 kVA, 347 A}-Filter
Transformer Insulation	Class A
Make	ABB, HI VOLT, BHEL
Weight	10000 +/-3% kg
Power Converter
Number of converters	2
Semiconductors	GTO thyristors / IGBT
GTO	Type : UW-2423-2810 SG 3000G X H24 GTO thyristors (D 921S45 T diodes), 14 thyristors per unit (two units). Line converter rated at 2 x 1269 V @ 50 Hz, with DC link voltage of 2800 V. Drive converter rated at 2180 V phase to phase, 953 A output current *per phase, motor frequency from 0 to 160.3 Hz.
IGBT	IGBT type 5SNA 1200G450300 2105 kW, individual axle control configuration, MITRAC software, water cooled. Newer locomotives have IGBT based propulsion system.
Hotel Load Converter
Make	BHEL / ABB
Rating	2x500 kVA
Voltage	750 V +/- 5%, 3 phase
Bogie
Type	Bo-Bo Henschel Flexifloat bogies with quill drive. Bogie center distance 10,200 mm (33.5 ft); bogie wheelbase 2,800 mm (9.2 ft) Unsprung mass per axle: 2.691 t This Locomotive has a Fully Suspended Drive.
Drive Arrangement	Gear coupling and 3-stage gears
Design	2-axle fabricated
Primary suspension	coil
Secondary suspension	coil
Pantograph
Type	Two Stone India (Calcutta) AM-92, Two WBL-85, Two Schunk for the imported locomotives.
Pantograph Weight	231 kg
Other information
2 FLAKT ABB Traction Motor Blowers	3.6 cubic meter per sec
Landert Traction Motor Blower Motor	3 phase, 415 V, 50 Hz, 2930 rpm, 25 kW
200L55-RFXH2A-01 Traction Motor Blower Motor Insulation	Class F
2 Oil Cooler Blowers	8.8 cubic meter per sec
Landert Oil Cooler Blower Motor	3 phase, 415 V, 50 Hz,2930 rpm, 25 kW
200L55-RH2A Oil Cooler Blower Motor Insulation	Class F
2 Howden Safanco Scavenge Blowers for Traction Motors and Oil Cooler Blower	0.664 cubic meter per sec
Landert Scavenge Blower Motor for Traction Motors and Oil Cooler	3 phase, 415 V, 50 Hz, 2850 rpm, 3 kW
100L28-R2C Scavenge Motor Blower Motor Insulation	Class H
2 Transformer Oil Pumps by Plumeliaz	1000 liters per minute
Landert Transformer Oil Pump Motor	3-phase, 415 V, 50 Hz, 2850 rpm, 4.7 kW
112M-2B type Transformer Oil Pump Motor Insulation	Class F
2 Converter Oil Pumps by Plumeliaz	960 liters per minute
Converter Oil Pump Motor by Landert	3-phase, 415 V, 50 Hz, 2860 rpm, 11 kW
112M-2F type Converter Oil Pump Motor Insulation	Class F
2 Main Compressors by D&M	1 kg/cm2
Main Compressor Motor by Landert	3-phase, 415 V, 50 Hz, 730 rpm, 15 kW
200155-RPAH8B Main Compressor Motor Insulation	Class H
2 Machine Room Blower by Flakt and ABB	1 cubic meter per sec.
Machine Room Blower Motor by Landert	1-phase, 415 V, 50 Hz, 2830 rpm, 2.6 kW
132M-RFXHE2C type Machine Room Blower Motor Insulation	Class F
Scavenge Blower for Machine Room Blower by Howden Safanco	0.1 cubic meter per sec.
Scavenge Blower Motor for Machine Room Blower by Landert	1-phase, 415 V, 50 Hz, 2910 rpm, 0.75 kW
9DL24-RE2C type Scavenge Blower Motor for Machine Room Blower Insulation	Class F
Auxiliary Compressor by D&M and Bristol	141.6 ft per min., 7.03 kg per cm2.
Auxiliary Compressor Motor by D&M	110 VDC, 1450 rpm, 75 kW
Battery by Saft Nife	110 V, 199 AH, NiCd (SAF-39 SBL199)

Performance

The WAP-5 (5440 HP) has the following capacity for ICF coaches in tonnes:

Gradient	Start	40 km/h	50 km/h	60 km/h	70 km/h	80 km/h	90 km/h	100 km/h	110 km/h	120 km/h	130 km/h	140 km/h	150 km/h	160 km/h
Level	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1470	1230
1 in 500	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1470	1250	1065	910
1 in 200	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1350	1160	995	860	745	645
1 in 150	1500+	1500+	1500+	1500+	1500+	1500+	1500+	1310	1125	970	840	730	635	550
1 in 100	1500+	1500+	1500+	1500+	1460	1325	1125	970	840	730	635	555	480	420
1 in 50	1010	955	940	865	780	710	610	525	455	400	345	305	265	230

The average weight of an ICF coach is 55 tonnes.

See also

• Locomotives of India
• Rail transport in India