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INDIAN RAILWAYS MAINTENANCE MANUAL FOR DIESEL LOCOMOTIVES - PART 69

Document No:

Chapter –13 Technological Advancements

Version No: 1.0-d0

Date Issued: dd/mm/yyyy

Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES

Revised 2013

Printed: 2015/03/08

Page 268 of 303

13.1.5

2000-2010:

This decade saw many technological jumps. Some of the important ones are

described briefly in the paragraphs below.

13.1.5.1 WDP4: Three phase traction was introduced for passenger locos in the form of WDP4

locos, the salient features are:

• Year Introduced: 2001

• Bogie configuration: Bo1-1Bo

• Axle load: 19.5t

• 4000hp, 16-cylinder 2-stroke turbo super

charged diesel engine

• AC-AC transmission

• Maximum Tractive Effort: 27t

• Maximum Speed: 160 kmph

• Single cab design

13.1.5.2 WDM3B: This Loco is Upgraded, higher-power versions of the WDM-3A loco. Only 23

locos were manufactured.

• Year introduced: 2005

• Bogie configuration: Co-Co

• Axle load: 19.5 t

• 3100bhp, 16-cylinder 4-stroke turbo super

charged diesel engine

• AC-DC transmission

• Maximum Tractive Effort: 38.6 t

• Maximum Speed: 120 kmph

• Single cab design

13.1.5.3 WDM3C: This Loco is Upgraded, higher-power versions of the WDM-3A loco. Only 54

locos were manufactured.

• Year introduced: 2002

• Bogie configuration: Co-Co

• Axle load:18.8 t

• 3300bhp, 16-cylinder 4-stroke turbo super

charged diesel engine

• AC-DC transmission

• Maximum Tractive Effort: 30.5 t

• Maximum Speed: 120 kmph

• Single cab design

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Document No:

Chapter –13 Technological Advancements

Version No: 1.0-d0

Date Issued: dd/mm/yyyy

Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES

Revised 2013

Printed: 2015/03/08

Page 269 of 303

13.1.5.4 WDM3D: This Loco is Upgraded, higher-power versions of the WDM-3A loco.

Manufactured initially by DLW, then DLMW and later on both by DLMW & Parel
Workshop of C.Rly.

• Year introduced: 2003

• Bogie configuration: Co-Co

• Axle load: 19.5t

• 3300bhp, 16-cylinder 4-stroke turbo super

charged diesel engine

• AC-DC transmission

• Maximum Tractive Effort: 36.0t

• Maximum Speed: 120 kmph

• Single cab design

13.1.5.5 WDM3E: This is a 3500hp loco developed by DLW in 2008, based on the WDM-3D

design. It has a high-adhesion bogie ('HAHS'). Only 8 locos were manufactured.

WDM-3E

• Year introduced: 2008

• Bogie configuration: Co-Co

• Axle load: 19.7 t

• 3500bhp, 16-cylinder 4-stroke turbo super

charged diesel engine

• AC-DC transmission

• Maximum Tractive Effort: 38.6t

• Maximum Speed: 105 kmph

• Single cab design

13.1.5.6 WDM3F: This is a 3600hp loco developed by DLW, based on the WDM-3D design.

These are having GE MBCS and GE electrics. It has a high-adhesion bogie ('HAHS'
bogie). No longer in production.

• Year introduced: 2008

• Bogie configuration: Co-Co

• Axle load: 20t

• 3600bhp, 16-cylinder 4-stroke turbo super

charged diesel engine

• AC-DC transmission

• Maximum Tractive Effort: 38.5t

• Maximum Speed: 120 kmph

• Single cab design

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Document No:

Chapter –13 Technological Advancements

Version No: 1.0-d0

Date Issued: dd/mm/yyyy

Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES

Revised 2013

Printed: 2015/03/08

Page 270 of 303

13.1.5.7 WDP4B: To meet the growing requirements of handling longer passenger trains, the

WDP4 locos were modified into the WDP4B. The salient features are:

• Year Introduced: 2007

• Bogie configuration: Co-Co

• Axle load: 20.5t

• 4000hp, 16-cylinder 2-stroke turbo super

charged diesel engine

• AC-AC transmission

• Maximum Tractive Effort: 27t

• Maximum Speed: 160 kmph

• Single cab design

13.1.5.8 WDP4D: To improve speed potential of the passenger locos in both directions of travel

and to provide a more comfortable cab, the WDP4 platform was modified into a dual
cab design and classified as WDP4D. The salient features are:

WDP-4D

• Year Introduced: 2010

• Bogie configuration: Co-Co

• Axle load: 20.5t

• 4000hp, 16-cylinder 2-stroke turbo super

charged diesel engine

• AC-AC transmission

• Maximum Tractive Effort: 27t

• Maximum Speed: 160 kmph

• Dual cab design

13.1.6 2010- 2013

13.1.6.1 WDG5: To meet the requirements of hauling heavier freight trains at higher speeds the

WDG5 class of loco has been developed with the joint efforts of Indian Railways and
EMD. The salient features are:

WDG-5

• Year Introduced: 2012

• Bogie configuration: Co-Co

• Axle load: 22.5t

• 5500hp, 20-cylinder 2-stroke turbo super

charged diesel engine

• AC-AC transmission

• Maximum Tractive Effort: 56t

• Maximum Speed: 120 kmph

• Single cab design

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Document No:

Chapter –13 Technological Advancements

Version No: 1.0-d0

Date Issued: dd/mm/yyyy

Document Title: MANUAL MAINTENANCE FOR DIESEL LOCOMOTIVES

Revised 2013

Printed: 2015/03/08

Page 271 of 303

13.1.6.2 WDG4D: To improve speed potential of the goods locos in both directions of travel and

to provide a more comfortable cab, the WDG4 platform was modified into a dual cab
design and classified as WDG4D. The salient features are

• Year Introduced: 2013

• Bogie configuration: Co-Co

• Axle load: 21.0t

• 4500hp, 16-cylinder 2-stroke turbo super

charged diesel engine

• AC-AC transmission

• Maximum Tractive Effort: 540 KN

• Maximum Speed: 80 kmph

• Dual cab design

13.1.6.3 WDM2G (Multigenset loco): Fuel cost is the single biggest factor determining the

operation cost and to meet the requirements of hauling freight trains with low fuel
consumption the WDM2G Multigenset class of loco has been developed. First loco
manufactured by DLMW/PTA. The salient features are:

• Year Introduced: 2013

• Bogie configuration: Co-Co

• Axle load: 18.8t

• 2400hp,

3 Gen-sets of 800 hp, each with 6-

cylinder Cummins QSK-19, N-Gen II

• AC-DC transmission

• Maximum Tractive Effort: 37.20t

• Maximum Speed: 105 kmph

• Single cab design

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