Indian locomotive class WAP-5

Indian locomotive class WAP-5 is a class of electric locomotives used by Indian Railways. The first ten locomotives were imported from ABB 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
Ghaziabad based WAP-5 rest at Bhopal Jn.
Type and origin Power type Electric Builder Chittaranjan Locomotive Works (India) ABB (Switzerland) Model Lok 2000 Build date 1995–present Total produced 249 as of November 2024
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 Group 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) WAP5A: 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:- November 2024^[3]

Zone	Shed	Shed Code	Quantity			Introduction Year
			HOG	Non HOG	Total
Eastern Railway	Howrah	HWHE	37	3	40	2019
Northern Railway	Ghaziabad	GZBE	82	61	143	1997
Western Railway	Vadodara	BRCE	30	36	66	2011
Total			149	100	249

Variants

Aerodynamic Ghaziabad WAP-5 30164 with 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 upto 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.

One of the Tejas WAP-5s with Kochuveli-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 (1430t) 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

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

Average weight of an ICF coach is 55 tonnes.

See also

• Locomotives of India
• Rail transport in India

References

1. "'Make in India' speed boost for Indian Railways! Gets first 200 kmph capable aerodynamic electric locomotive". Financial Express. 6 November 2018. Retrieved 1 December 2023.
2. "200 km in 90 mins: Delhi-Agra high speed train sets new speed record". The Economic Times. 3 July 2014. Archived from the original on 7 July 2014. Retrieved 10 July 2014.
3. Loco holding (PDF) (Report). Railnet. Retrieved 16 October 2024.
4. "Train had WAP-7 engine, 'black box' may reveal cause". Indian Express. 9 August 2010. Retrieved 25 August 2012.
5. "Recent Developments". Chittaranjan Locomotive Works. Retrieved 25 August 2012.
6. Development of Electric locomotive with Head On Generation (HOG) facility (PDF) (Report). Indian Railways. Retrieved 1 December 2023.
7. "New Aerodynamic 160 kmph WAP-5 Locomotives Flagged Off At CLW". Railpost.in. 2 October 2020. Retrieved 27 December 2020.
8. Nigam, Saumya (27 December 2023). "Amrit Bharat Express to launch with Push-Pull technology and other exciting features". India TV. Retrieved 28 December 2023.
9. "Vande Sadharan train: All you need to know; How it is different from Vande Bharat train?". Business Today. 30 October 2023. Retrieved 30 December 2023.
10. "Monograph on Bo-Bo Flexi Coil Fabricated Bogie" (PDF). Indian Railways Institute of Civil Engineering. June 2017. Retrieved 20 March 2023.
11. "Simulation of mix-traffic railway networks" (PDF). Indian Railways Institute of Civil Engineering. 2017. Retrieved 20 March 2023.
12. Locomotive specifications (Report). IRFCA. Retrieved 1 December 2023.

External links

• IRFCA