Monday, 12 August 2013

India's Powerful Locomotive WAG-9

India's Powerful Locomotive WAG-9 having capacity of hauling 6000 tonne at 120 km/hr.It is referred to as the Heavy Haul freight locomotive of the Indian Railways.
It is very similar to WAP-7,the only difference being the gear ratio (WAP -7 :- 72:20 ,WAG-9 77:15) which makes it suitable for heavy freight operations.

Around 400 of these locomotives have been put to service as of early 2013.They have GTO thyristor converters and 3-phase asynchronous motors.

Newer versions of WAG-9 feature full IGBT traction control.

They have better adhesion because of the computerized slip control which in turn increase their hauling capacity and initial starting torque of about 520KN.

They have Traction motors rated at 6,350 hp (4,735 kW) each,Continuous power at wheel rims 4500kW (6000hp).

Two units can haul 4500t on gradients of 1:60 and a single unit can start a 4700t load (58 BOXN wagons Max. axle load of 20.32t) on a gradient of 1:180.

Total weight of WAG-9 is 123t.

Starting Tractive Effort(TE) 520kN.
Continuous Tractive Effort(TE) 325kN.

Rated top speed is 120km/h (75 miles/hr) for 6000 tonne load (Operational).

Technical Specifications Of WAG-9 :-
Manufacturers: ABB, CLW

Power Supply: 25kV AC Supply

Traction Motors: ABB's 6FRA 6068 (850kW, 2180V, 1283/2484 rpm, 270/310A. Weight 2100kg) Axle-hung, nose-suspended.

Gear Ratio: 77:15 / 64:18

Transformer: ABB's 4x1450kVA.

Power Drive: Power convertor from ABB, SG 3000G X H24 GTO thyristors ,14 thyristors per unit (two units). Line convertor rated at 2 x 1269V @ 50Hz, with DC link voltage of 2800V. Motor/drive convertor rated at 2180V phase to phase, 971A output current per phase, motor frequency from 0 to 132Hz.

Hauling capacity: 4250t

Tractive Effort: 460kN

Bogies: Co-Co, ABB bogies; bogie wheel base 1850mm + 1850mm

Wheel base: 15700mm
Axle load: 20.5t
Unsprung mass per axle: 3.984t

Body width: 3152mmn
Cab length: 2434mm

Pantographs: Two Secheron ES10 1Q3-2500.
Pantograph locked down height: 4525mm.
Photo: India's Powerful Locomotive WAG-9 having capacity of hauling 6000 tonne at 120 km/hr.It is referred to as the Heavy Haul freight locomotive of the Indian Railways. It is very similar to WAP-7,the only difference being the gear ratio (WAP -7 :- 72:20 ,WAG-9 77:15) which makes it suitable for heavy freight operations. Around 400 of these locomotives have been put to service as of early 2013.They have GTO thyristor converters and 3-phase asynchronous motors. Newer versions of WAG-9 feature full IGBT traction control. They have better adhesion because of the computerized slip control which in turn increase their hauling capacity and initial starting torque of about 520KN. They have Traction motors rated at 6,350 hp (4,735 kW) each,Continuous power at wheel rims 4500kW (6000hp). Two units can haul 4500t on gradients of 1:60 and a single unit can start a 4700t load (58 BOXN wagons Max. axle load of 20.32t) on a gradient of 1:180. Total weight of WAG-9 is 123t. Starting Tractive Effort(TE) 520kN. Continuous Tractive Effort(TE) 325kN. Rated top speed is 120km/h (75 miles/hr) for 6000 tonne load (Operational). Technical Specifications Of WAG-9 :- Manufacturers: ABB, CLW Power Supply: 25kV AC Supply Traction Motors: ABB's 6FRA 6068 (850kW, 2180V, 1283/2484 rpm, 270/310A. Weight 2100kg) Axle-hung, nose-suspended. Gear Ratio: 77:15 / 64:18 Transformer: ABB's 4x1450kVA. Power Drive: Power convertor from ABB, SG 3000G X H24 GTO thyristors ,14 thyristors per unit (two units). Line convertor rated at 2 x 1269V @ 50Hz, with DC link voltage of 2800V. Motor/drive convertor rated at 2180V phase to phase, 971A output current per phase, motor frequency from 0 to 132Hz. Hauling capacity: 4250t Tractive Effort: 460kN Bogies: Co-Co, ABB bogies; bogie wheel base 1850mm + 1850mm Wheel base: 15700mm Axle load: 20.5t Unsprung mass per axle: 3.984t Body width: 3152mmn Cab length: 2434mm Pantographs: Two Secheron ES10 1Q3-2500. Pantograph locked down height: 4525mm.
Posted by at No comments:

Sunday, 11 August 2013

India's Fastest Locomotive WAP-7


India's Fastest Locomotive WAP-7

India's fastest locomotive WAP-7 speeding upto 140km/h,6125hp max. power; 6000hp continuous at wheel rim. At 123t, it is much heavier than the 78t WAP-5. Intended to haul heavier, 26-coach passenger trains and passenger/parcel mixed trains.
Initial models were rated at 6125hp total power and 33000 kgf (323kN) tractive effort. Modifications during continuing trials resulted in improved performance with the loco now yielding 6350hp total power and 36000 kgf (352.8kN) tractive effort. In the trial runs,the upgraded WAP-7 #30203 was shown able to take a 24-coach train to 110km/h in just 235 to 245 seconds (compare: 324 seconds for a WAP-5). Braking systems as in the WAP-5, with regenerative braking rated at 183kN in the first units and 260kN in the later ones.
Earlier trials with WAP-7 locos had yielded times around 390 seconds for the same test, which had cast doubts on the future of this loco class which was designed to perform better than the WAP-5. After some trials with the Prayagraj Exp. in early 2002, now the WAP-7 is being used to haul the 24-coach rake of ER's Poorva Exp. and will presumably soon be used for other trains as well. Max. tested speed is 160km/h, rated for 140km/h.

Better performing variants of the WAP-7 have been under development changes are said to include higher capacity components (including the main transformer) to allow stall-free running on 1:100 gradients, and a higher tractive effort of 42000 kgf (411kN). Some of the units starting around #30212 are also thought to have some enhancements in comparison to the very first ones. [11/04] Other plans by CLW for this loco class are said to include the provision of IGBT control, greater automation of some control tasks, and in-cab signalling. MU operation possible with a maximum of two locos.

The WAP-7 appears to have returned to the older (WAM, earlier WAP) style of pantograph with a single collector bar instead of the double collector bar used for the WAG-9.

Manufacturers: CLW
Traction Motors: 6FRA 6068 3-phase squirrel-cage induction motors (850kW, 2180V, 1283/2484 rpm, 270/310A. Weight 2100kg, forced-air ventilation, axle-hung, nose-suspended. Torque 6330/7140Nm. 95% efficiency.)
Gear Ratio: 72:20
Axle load: 20.5t
Wheel diameter: 1092mm new, 1016mm worn
Wheel base: 15700mm
Bogies: Co-Co, ABB 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
Tractive Effort: 36.0t

A 24-coach (1430t) 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).
India's fastest locomotive WAP-7 speeding upto 140km/h,6125hp max. power; 6000hp continuous at wheel rim. At 123t, it is much heavier than the 78t WAP-5. Intended to haul heavier, 26-coach passenger trains and passenger/parcel mixed trains. Initial models were rated at 6125hp total power and 33000 kgf (323kN) tractive effort. Modifications during continuing trials resulted in improved performance with the loco now yielding 6350hp total power and 36000 kgf (352.8kN) tractive effort. In the trial runs,the upgraded WAP-7 #30203 was shown able to take a 24-coach train to 110km/h in just 235 to 245 seconds (compare: 324 seconds for a WAP-5). Braking systems as in the WAP-5, with regenerative braking rated at 183kN in the first units and 260kN in the later ones. Earlier trials with WAP-7 locos had yielded times around 390 seconds for the same test, which had cast doubts on the future of this loco class which was designed to perform better than the WAP-5. After some trials with the Prayagraj Exp. in early 2002, now the WAP-7 is being used to haul the 24-coach rake of ER's Poorva Exp. and will presumably soon be used for other trains as well. Max. tested speed is 160km/h, rated for 140km/h. Better performing variants of the WAP-7 have been under development changes are said to include higher capacity components (including the main transformer) to allow stall-free running on 1:100 gradients, and a higher tractive effort of 42000 kgf (411kN). Some of the units starting around #30212 are also thought to have some enhancements in comparison to the very first ones. [11/04] Other plans by CLW for this loco class are said to include the provision of IGBT control, greater automation of some control tasks, and in-cab signalling. MU operation possible with a maximum of two locos. The WAP-7 appears to have returned to the older (WAM, earlier WAP) style of pantograph with a single collector bar instead of the double collector bar used for the WAG-9. Manufacturers: CLW Traction Motors: 6FRA 6068 3-phase squirrel-cage induction motors (850kW, 2180V, 1283/2484 rpm, 270/310A. Weight 2100kg, forced-air ventilation, axle-hung, nose-suspended. Torque 6330/7140Nm. 95% efficiency.) Gear Ratio: 72:20 Axle load: 20.5t Wheel diameter: 1092mm new, 1016mm worn Wheel base: 15700mm Bogies: Co-Co, ABB 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 Tractive Effort: 36.0t A 24-coach (1430t) 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).
Posted by at No comments:
Subscribe to: Posts (Atom)