CENTRAL RAILWAY

PRESS RELEASE

WAP 7 An Energy Efficient Loco Now in Dakshin Express

WAP 7 is a high speed locomotive indigenously developed by Chittaranjan Locomotive Works. It is capable of hauling trains at speeds ranging between 140 and 160km per hour.With the last 4 months effort by division, CR HQ has chased with Railway Board resulted introduction of WAP7 loco in Dakshin Express on 2 feb 2012, further Sampark kranti express is also expected to get WAP 7 in next one month. Nagpur division also planning to switch over to WAP 7 locos in Indore Trishatabdi express and Nagpur-Indore weekly express.

The requirement of banker engine in ghat section is eliminated, resulted in saving of 10 minutes time in the critical ghat section as well as saving of electrical energy about 700 units per train while descending the ghat with same loco. It will also save the banker engine use and energy. Due to high acceleration the punctuality is maintained in division.Performance:With a maximum speed rating of 180km/h (IR restricts it to 145km/hr), the WAP-7 boasts of the most phenomenal acceleration figures while hauling mail/express trains. The WAP-7 can also haul loads of 24-26 passenger coaches (1430-1550t) at 110+ km per hour. It is also known to haul 16 heavyweight Air Conditioned coaches (1120t) in 1:40 inclines single-handedly. At a trial conducted by Indian Railways, it clocked a speed of 177km/h. It is the most successful passenger locomotive in the Indian Railways portfolio after the WAP-4. It is used to haul premium trains like the Rajdhani Express and the Shatabdi Express apart from other regular mail/express trains.

Currently a 6000hp version with IGBT traction is developed by Chittaranjan Locomotive Works.

A 24-coach (1500t) passenger rake can be accelerated to 110km/h in 240 seconds (over 4.7km) by a WAP-7; to 120km/h in 304 sec. (6.7km); and to 130km/h in 394 sec. (9.9km).

Energy Saving:Figures available prove that on level sections, the loco generates around 10% of energy consumed and on graded sections up to 30%. As of now, 300 WAG 9, WAP 7 and WAP 5 locos running on the network annually save about 100 million units of energy, saving 105 tons of CO2 per annum.

Comparison with Rail road:

The SEC of WAP7 is around 12.28 units per 1000 gross ton KM (GTKM), where as for WAG 9 it is calculated as 6.63 units per 1000 GTKM which is 15 to 25% less than conventional locos. A 12 T motor vehicle consumes 1 liter for 3 Km. equivalent to 27.7 liter per 1000 GTKM. Which means saving of Rs 1200 per 1000GTKM in WAG 9 loco hauled trains. Even if compared with diesel traction it saves Rs 100 per 1000GTKM.--- --- ---- ---- ---- ---- ---- --- ---- --

Date:- 08/02/2012

This news comes to you from Public Relations Department, Central Railway, Nagpur Division.