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; locomotives were later manufactured by Chittaranjan Locomotive Works in India.

The locomotive has regenerative braking, flexible gear coupling, wheel-mounted disc brakes, and a potential for speed enhancement to . Braking systems include regenerative brakes, disc brakes, automatic train air brakes and a charged spring parking brake.

On 3 July 2014, a WAP-5 locomotive set an Indian rail speed record by hauling a passenger train between Delhi and Agra at during a trial run, completing the 200 km journey in about 90 minutes.

Locomotive sheds

+ZoneNameShed codeQuantityIntroduction yearWAP-5WAP-5ABCentral RailwayKalyanKYNE82025Eastern RailwayHowrahHWHE16152019Northern RailwayGhaziabadGZBE61461997North Eastern RailwayGorakhpurGKPL202026Southern RailwayErode EDE102025 Royapuram RPME82025South Central Railway LallagudaLGDE82026 South Western Railway KrishnarajapuramKJMD22026Western RailwayVadodaraBRCE34192011ValsadBLEE22025Total111138Total locomotives active as of October 2026249

Variants

In October 2015, a WAP-5A locomotive (No. 30086) was rolled out with a gear ratio of 59:35:19, enabling it to attain speeds of up to 200 km/h (120 mph) during trial runs. In March 2018, a WAP-5 locomotive (No. 30136) with an enhanced power output of 4,500 kilowatts (6,000 hp) was rolled out. Following successful trials, this upgraded power output was adopted as the standard specification for the class. 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 a diesel generator is provided at either end of the train rake to supply power.

In October 2020, two WAP-5 locomotives (Nos. 35012 and 35013) were unveiled with an asymmetric body design featuring an aerodynamic profile at one end and a blunt profile at the other. They were intended to be semi-permanently coupled with a train in a push-pull configuration for Tejas Express services. Both locomotives have a power output of 6,000 horsepower (4,500 kW) and a maximum speed of 160 kilometres per hour (99 mph). Two similarly modified WAP-5 locomotives (Nos. 35027 and 35028) are used to haul the Amrit Bharat Express in a comparable push-pull configuration.

Technical specifications A WAP-5 locomotive can accelerate a 24-coach passenger rake weighing 1,430 tonnes to 110 km/h in 312.1 seconds over a distance of 6 km, to 120 km/h in 402 seconds over 6.9 km, and to 130 km/h in 556 seconds over 14.2 km. Specifications are as follows:

+Technical specifications General informationGaugeBroad gauge Line voltage25000 VType of currentAlternating current (AC)Axle load AAR classificationBo-BoLength over head-stocksLength over buffersBogie wheel base Wheel baseBody widthCab lengthPantograph locked down height Bogie center distance Height over pantograph Body width Coupling Central buffer couplers (CBC) Surface Corrugated or plainTraction motorsType6FXA 7059 3-phase asynchronous motors, , 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. MakeABBTraction motors insulationClass 200Traction motor's short time overload rating1150 kW, 1540 V, 540 A, 1107 rpmTraction motor's 1 hour rating1150 kW, 2044 V, 396 A, 1485 rpmTraction motor's continuous rating1150 kW, 2180 V, 370 A, 1585 rpmNumber of traction motors4Gear ratio 67:35:17 ()59:35:19 () TransformerTypeABB 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}-filterTransformer insulationClass AMakeABB, HI VOLT, BHELWeight10000 +/-3% kg Power converterNumber of converters2SemiconductorsGTO thyristors / IGBTGTO 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. IGBTIGBT type 5SNA 1200G450300 2105 kW, individual axle control configuration, MITRAC software, water cooled. Newer locomotives have IGBT based propulsion system. Hotel load converterMakeBHEL / ABBRating2x500 kVAVoltage750 V +/- 5%, 3 phase BogieTypeBo-Bo Henschel Flexifloat bogies with quill drive. Bogie center distance ; bogie wheelbase 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 PantographTypeTwo Stone India (Calcutta) AM-92, two WBL-85, two Schunk for the imported locomotivesPantograph weight231 kg Other information2 FLAKT ABB traction motor blowers3.6 cubic meter per secLandert traction motor blower motor3 phase, 415 V, 50 Hz, 2930 rpm, 25 kW200L55-RFXH2A-01 traction motor blower motor insulationClass F2 oil cooler blowers8.8 cubic meter per secLandert oil cooler blower motor3 phase, 415 V, 50 Hz,2930 rpm, 25 kW200L55-RH2A oil cooler blower motor insulationClass F2 Howden Safanco scavenge blowers for traction motors and oil cooler blower0.664 cubic meter per secLandert scavenge blower motor for traction motors and oil cooler3 phase, 415 V, 50 Hz, 2850 rpm, 3 kW100L28-R2C scavenge motor blower motor insulationClass H2 transformer oil pumps by Plumeliaz1000 liters per minute Landert transformer oil pump motor3-phase, 415 V, 50 Hz, 2850 rpm, 4.7 kW112M-2B type transformer oil pump motor insulationClass F2 converter oil pumps by Plumeliaz960 liters per minuteConverter oil pump motor by Landert3-phase, 415 V, 50 Hz, 2860 rpm, 11 kW112M-2F type converter oil pump motor insulationClass F2 main compressors by D&M1 kg/cm2Main compressor motor by Landert3-phase, 415 V, 50 Hz, 730 rpm, 15 kW200155-RPAH8B main compressor motor insulationClass H2 machine room blowers by Flakt and ABB1 cubic meter per sec.Machine room blower motor by Landert1-phase, 415 V, 50 Hz, 2830 rpm, 2.6 kW132M-RFXHE2C type machine room blower motor insulationClass FScavenge blower for machine room blower by Howden Safanco0.1 cubic meter per sec.Scavenge blower motor for machine room blower by Landert1-phase, 415 V, 50 Hz, 2910 rpm, 0.75 kW9DL24-RE2C type scavenge blower motor for machine room blower insulationClass FAuxiliary compressor by D&M and Bristol141.6 ft per min., 7.03 kg per cm2.Auxiliary compressor motor by D&M110 VDC, 1450 rpm, 75 kWBattery by Saft Nife110 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

References

External links

IRFCA