Indian locomotive class WAP-7

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WAP 7 is a high speed locomotive indigenously developed by Chittaranjan Locomotive Works. It is capable of 140 to 160 km per hour and now largely used by Northern Railways. It is actually a modified version of the WAG 9 freight locomotive with modified gear ratios, set to replace the fleet of WAP 4s, the most widely used passenger locomotive now.

With a maximum speed rating of 130 km/h, the WAP-7 boasts of the most phenomenal acceleration figures while hauling mail/express trains.The WAP7 can also haul loads of 24-26 passenger coaches (1430-1550 t) at 110+ km/h per hour. It is also known to haul 16 heavyweight Air Conditioned coaches (1120t) in 1:40 inclines single-handedly.

Contents

[edit] Technical specifications[1]

Manufacturers CLW
Traction Motors 6FRA 6068 3-phase squirrel-cage induction motors (850kW, 2180V, 1283/2484 rpm, *270/310A. Weight
Gear Ratio 72:20
Axle load 20.5t
Wheel diameter 1092mm new, 1016mm worn
Wheel base 15700mm
Bogies Co-Co, Fabricated Flexicoil Mark IV bogies; bogie wheel base 1850mm + 1850mm
Unsprung mass per axle 3.984t
Length over buffers 20562mm
Length over headstocks 19280mm
Body width 3152mmn
Cab length 2434mm
Pantograph locked down height 4525mm

[edit] Notes and references

  1. ^ Indian AC electric loco information

[edit] See also

[edit] External links



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