Indian locomotive class WAP-6

WAP-6[1]
Type and origin
Power type Electric
Builder CLW
Build date 1997
Total produced 17
Rebuild date August, 2012
Number rebuilt 22400-22415
Specifications
UIC class Co'-Co'
Gauge 1,676 mm (5 ft 6 in)
Bogies originally Flexicoil Mark IV Fabricated;converted to Co'-Co' Flexicoil Mark 1 cast bogies; primary and secondary wheel springs with bolsters
Wheel diameter New: 1,092 mm (3 ft 7 in)
Half worn: 1,055 mm (3 ft 5 1⁄2 in)
Full worn: 1,016 mm (3 ft 4 in)
Length 18.79 m (61 ft 7 3⁄4 in)
Height 4.235 m (13 ft 10 3⁄4 in)
Axle load 18,800 kg (41,400 lb)
Loco weight 113,200 kg (249,600 lb)
Electric system(s) 25 kV 50 Hz AC, AC Overhead
Current collection pantograph
Traction motors Hitachi HS15250
Loco brake Air/Hand
Train brakes Air
Safety systems Slip control, Over voltage relay and No volt relay
Performance figures
Maximum speed Intended at 140 km/h (87 mph); Restricted:105 km/h (65 mph)
Power output Max: 5,350 hp (3,990 kW)
Continuous: 5,000 hp (3,700 kW)
Tractive effort Starting:30.8 t (30 long tons; 34 short tons)
Continuous:19 t (19 long tons; 21 short tons)
Career
Operators Indian Railways
Numbers 22400-22416
Locale Eastern Railway
Withdrawn August, 2012
Disposition One scrapped remainder rebuilt

The 6th class of Wide Gauge (W), Alternating Current powered (A), Passenger-dedicated (P) series.

This class was actually variant of the WAP-4 design where Co-Co Flexicoil Mark 1 cast bogies of the usual WAP4 was replaced by Fabricated Flexicoil Mark IV bogies. All other specifications were same as WAP4. WAP-1 unit no. 22212 was the first to be rebuilt into a WAP-6. It was provided with Flexicoil bogies and other upgrades. Then it was rebuilt into WAP-4. Later, more WAP-1 units were re-geared and provided with high-adhesion fabricated bogies (Flexicoil Mark IV) which are somewhat similar to ALCO hi-adhesion bogies. They were intended to reach 140 km/h (87 mph) but failed to do so in trials and were restricted at 105 km/h (65 mph). Two units,i.e., 22406 and 22408 are upgraded with better wheel-sets. This class was an unsuccessful one. All have been converted back as WAP-4. All were homed at Asansol(ASN) shed but after conversion reallocated to Howrah (HWH)shed.[2]

Technical specifications

Technical specification[3]
Traction motors Axle-hung, nose-suspended, force-ventilated, 3,485 kg (7,683 lb), 630 kW (840 hp), 750 V, 900 A, 895 RPM, parallel grouping, C class armature and field, temperature rise (Armature 60, filed 70 and commutator 85) in °C, coil resistance (armature 0.01284 ohms+10%, field 0.01184 ohms+10% and commutator 0.00907 ohms+10%, air gap main pole 6.35 kVA, air gap inter-pole 10 mm (0.3937 in)
Gear ratio 58:23
Transformer CCL make, aluminium coil, 3400 kVA, 32 taps
Rectifier 2 silicon rectifier cubicle 2700 A, 1050 V
Number of sandboxes 4
2 Headlights 250 W, 32 V
Lead acid Battery 50 cells, 110 V (rated 5 hr)
Arno Converter 216 kVA
2 FLAKT smoothing reactor blower PHMX-40
2 Silicon Rectifier Blower 60 kg (132 lb)
Oil cooler blower S.F. India Ltd.
Smoothing reactor for traction motor SL-30 type, 1350 A, 1270 V, 2 Coils, 0.00535 ohms resistance at 110 °C (230 °F)

Hauling capacity

If the average weight of ICF coaches is 55 tonnes then:

Grades/km/h Start 20 40 60 70 80 90 100 110 120 130 140 150 160
Level 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1155 805 570
1 in 500 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1105 805 565 400
1 in 200 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1320 1230 1035 730 535 375 260
1 in 150 1500+ 1500+ 1500+ 1500+ 1500+ 1500+ 1405 1090 1020 860 610 445 310 215
1 in 100 1500+ 1570 1490 1405 1365 1195 1020 795 750 635 445 320 220 145
1 in 50 1160 770 750 720 710 625 530 410 390 325 220 150 90 45

Trains hauled by WAP-6

See also

References

  1. ↑ "IRFCAspecs".
  2. ↑ "WAP6".
  3. ↑ "Trainweb".
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