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Best of Indian Railways Diesel Locomotive – The WDM ALCO Series Classic Compilation
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Best of Indian Railways Diesel Locomotive – The WDM ALCO Series Classic Compilation
WDM-3A / WDM–2C
(Old class name WDM-2C,
new class name WDM-3A.)
These 3100hp locos are more powerful versions of the WDM-2.
The first one was delivered on August 22, 1994.
A single WDM-2C could haul a 21-coach passenger train,
something that required two of the older WDM-2's.
The WDM-2C / WDM-3A also has a rated top speed of 120km/h,
and has the same power-pack as the WDG-2 and WDP-2 locos.
Early units were air-braked but lately many have been provided dual-braking capability.
Dynamic brakes are also provided.
The loco has a single cab.
Gear ratio 65:18 as with the WDM-2.
All recent units have a square profile, but a few early versions have a rounded appearance.
Starting in [11/02], even higher powered units (3300hp) have been turned out by DLW, Varanasi,
and DCW (DMW), Patiala –
-all recent WDM-3A are of 3300hp power rating.
DLW has also experimented with improvements to the Alco 251 power pack to extract 3900hp out of it,
and this is being [4/02] tested in a few locomotives.
The new class name for these is WDM-3A.
Builders: DLW
Engine:
Upgraded (by DLW) Alco 251-C (16 cylinder),
3100hp (2900hp site rating) early models,
3300hp from 2003,
1050rpm max / 400rpm idle;
direct fuel injection.
Cooling and fans as with WDM-2.
ABB VTC304-15 or
Napier NA 295 IR turbocharger.
Governor: GE 17MG8 / Woodwards 8574-650.
Transmission:
Electric with BHEL TA 10102 CW alternator, 1050rpm, 1130V, 4400A. (Earlier used BHEL TG 10931 AZ alternator.)
Axle Load: 18.8 tonnes. Wheelset: Co-Co trimount bogie.
Starting TE: 30.4t, at adhesion 27%.
Length over buffer beams: 15862m
Distance between bogies: 10516mm.
WDM-3A / WDM–2C
(Old class name WDM-2C,
new class name WDM-3A.)
These 3100hp locos are more powerful versions of the WDM-2.
The first one was delivered on August 22, 1994.
A single WDM-2C could haul a 21-coach passenger train,
something that required two of the older WDM-2's.
The WDM-2C / WDM-3A also has a rated top speed of 120km/h,
and has the same power-pack as the WDG-2 and WDP-2 locos.
Early units were air-braked but lately many have been provided dual-braking capability.
Dynamic brakes are also provided.
The loco has a single cab.
Gear ratio 65:18 as with the WDM-2.
All recent units have a square profile, but a few early versions have a rounded appearance.
Starting in [11/02], even higher powered units (3300hp) have been turned out by DLW, Varanasi,
and DCW (DMW), Patiala –
-all recent WDM-3A are of 3300hp power rating.
DLW has also experimented with improvements to the Alco 251 power pack to extract 3900hp out of it,
and this is being [4/02] tested in a few locomotives.
The new class name for these is WDM-3A.
Builders: DLW
Engine:
Upgraded (by DLW) Alco 251-C (16 cylinder),
3100hp (2900hp site rating) early models,
3300hp from 2003,
1050rpm max / 400rpm idle;
direct fuel injection.
Cooling and fans as with WDM-2.
ABB VTC304-15 or
Napier NA 295 IR turbocharger.
Governor: GE 17MG8 / Woodwards 8574-650.
Transmission:
Electric with BHEL TA 10102 CW alternator, 1050rpm, 1130V, 4400A. (Earlier used BHEL TG 10931 AZ alternator.)
Axle Load: 18.8 tonnes. Wheelset: Co-Co trimount bogie.
Starting TE: 30.4t, at adhesion 27%.
Length over buffer beams: 15862m
Distance between bogies: 10516mm.
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