Diesel and Electric Locomotive Specifications

Locomotive Specifications

Data shown here is mainly drawn from "Diesel and Electric Locomotives of Indian Railways" by Jal E Daboo, published by the British Overseas Railways Historical Trust (BORHT), with updates and additions from the IRFCA mailing list. Permission is granted to copy this document in whole or part for any non-commercial (non-profit) uses only. Please see the disclaimer text below. This notice and the disclaimer text below must be retained in any reproduction of this document. Questions and comments may be directed to webmaster@irfca.org.

A Palm OS PDA version of this database is also available.

Class names for mainline diesels are according to the old classification scheme. See the diesel loco page for the new codes and the general loco page for an explanation of the new scheme.

Note: For some of the older loco classes (e.g., WCG-2, etc.), the power ratings in hp (horsepower) may be slightly incorrect -- locos with European designs often used 'PS' (pferdestarke, a German version of horsepower), or in some cases, other units, to quote power. These units are all close to the British horsepower, but not quite the same.

Diesel Locomotives
Class Year Maker Wheels Power
(hp)		 Speed
(km/h)		 Weight
(tonnes)		 Starting TE
(kg force)		 Quantity Serial Nos.
BG Diesels
WDM-1 1957-58 Alco Co-Co 1950
(1800 net)		 104 111.2 27900 100 17000+
WDM-2 1962+ Alco / DLW Co-Co 2600
(2400 net) 		120 112.8 30450 2700+ 16000-16887/17100-17999/
18040-079/18112-18514/
18523-18900/18903-18999.
Above list includes WDM-2A's. 17796-17895 (?) are the 'Jumbo' versions.
Many (17802+, etc.) now rebuilt as WDM-2C, new name WDM-3A.
Numbers are *not* chronological!
18040 was the first ever WDM-2, from Alco.
The first kit-built from DLW was 18233.
The first fully-built from DLW was 18299.
The last ones were in the 16000 series,
when the older number range was reused.
WDM-3A
(WDM-2C)		 1994+ DLW Co-Co 3100/3300 120 112.8 30450 115+ 14001-14079
14080-14143? 14144? (incl. WDM-2CA)
Some rebuilds of WDM-2 locos
now classed WDM-2C,WDM-3A with 18xxxR numbers.
Numbers interspersed with WDM-3C and others
WDM-3 1970 Henschel B-B 2500
(2440 net)		 80/120 ?? 22000/
25000		 8 18515-18522
WDM-3C 2002? DCW, Patiala Co-Co 3300 120 ?? ?? 2? Various 18833R, 18893R etc. (WDM-2 rebuilds), 14147 (WDM-3A rebuild)
Numbers interspersed with WDM-3A and others
WDM-3D 2003 DLW Co-Co 3300 160 117 36036 50+ 11101 - 11150+
WDM-3E 2008 DLW Co-Co 3500 120 118.2 38060 (?) ? 11263 and others
WDM-3F 2008 DLW Co-Co 3600 120 120 ? ? 11287, 11321, 11325, 11342
WDM-4 1962 GM Co-Co 2600
(2400 net)		 130 in use, 145+ trials 112.8 28200 72 18000-039 / 18080-111
WDM-6 1981-82 DLW Bo-Bo 1350 75 70 19200 2 18901, 18902
WDM-7 1987-89 DLW Co-Co 2000
(1800 net)		 105/100 96 ?? 15 11001-11015
WDP-1 1995-99 DLW Bo-Bo 2300 140 80.1 ?? 69 15001-15069
WDP-2 (WDP-3A) 1998-2002 DLW Co-Co 3100 140 117 ?? 69 15501-15569
WDP-3 (?) 1996 DLW Co-Co 2300 ?? ?? ?? ?? Prototype only, no IR number
WDP-4 2001 GM + DLW Bo1-1Bo 4000 160 119 27500 100+ 20000-09 (GM)
20010, 20011 (GM kits)
20012-20102 (DLW)
Except: 20042, 20047, 20075 (WDP-4B prototypes)
WDP-4B 2010 DLW Co-Co 4500 130 121.2 39180 70+ 20042, 20047, 20075 (prototypes)
40001-40070+
Except: 40014, 40026 (WDP-4D)
WDP-4D 2011 DLW Co-Co 4500? 130? ? ? 2+ 40014, 40026
WDG-3A
(WDG-2)		 1995+ DLW Co-Co 3100 100 123 ?? 550+ 14501-14999
14962 WDG-3C
New 13000-13156+
WDG-3C 2002 DLW Co-Co 3300 100 123 ??   14962, others?
WDG-3D 2004 DLW Co-Co 3400 100 123 ?? ?? ??
WDG-4 1999+ GM + DLW Co-Co 4000 100/120 126 55100 400+ 12001-12013(GM)
12014-12021(GM kits)
12022-12451+ (DLW, some 1203x are GM kits)
WDS-1 1944-45 GE Bo-Bo 2x193 56 41-46 10570 /
11500		 16? 19000-014
WDS-2 1954-55 Kraus
Maffei 		C 440 (400 net) 54 / 28 (ML / S) 51.4 9200/
15420		 30 19016-045
WDS-3 1961 Maschi-
nenbau Kiel		 C 618 65 / 27 (ML / S) 57 10400 /
17100 		7 19046-
WDS-4 1968-1969 CLW C 600 65 / 27 (ML / S) 60 9500 /
18000 		27 19062-19086/19108-19109
(Some to PS)
WDS-4A 1968 CLW C 660 65 / 38 (ML / S) 60 16700 /
18000 		5 19057-061
WDS-4B 1969+ CLW C 700 65 / 27 (ML / S) 60 11500 /
18000 		450+ 19110-19541
19660-19732 (includes WDS-4D)
(Some to PS.)
WDS-4C 1976-78 CLW (??) C 700 65 / 27 (ML / S) 60 11500 /
18000 		7 19046-19052
WDS-4D 1984-97 CLW C 700 60 / 25 (ML / S) 60 18000 120+ 19542-19659
19660-19732 (includes WDS-4B)
WDS-5 1967 Alco Co-Co 1065 /
(994 net) 		109 126 31500 21 19087-19107
WDS-6 1975+ DLW Co-Co 1400 (1328 net)
1350 / 1120 std for WDS-6AD 		71
/ 63 		120-129 34000 260+ 36000-36254 (includes WDS-6R)
36254-36265, 36501-36503+ WDS-6AD.
Some units originally 19459-19468, transferred to public sector units, renumbered).
WCDS-6 2009 Golden Rock ? ?
WDS-8 1979-82 CLW Bo-Bo 700 35 ?? 22000 5 PS only, no IR numbers
DLW Works Shunters 1966-67 DLW 0-B-0 250 ?? ?? ?? 4 19053-19055
19056 ex-MG No. 1007
MG Diesels
YDM-1 1955-56 North British B-B 700
(625 net) 		88 44 10920 20 6000-6019
YDM-2 1986-90 CLW B-B 700 75 48 14400 41 2001-41
YDM-3 1961-62 GM 1-B-B-1 1390
(1260 net) 		80 59 14300 30 6050+
YDM-4 1961-90 Alco / DLW Co-Co 1400
(1300 net) 		96 72 18935 572 6020-6049/6105-6129 (Alco)
6199-6258/6289-6769+ (DLW)
YDM-4A 1964-69 MLW Co-Co 1400
(1300 net) 		96 72 18935 99 6130-198/6259-288
YDM-5 1964 GM C-C 1390
(1260 net) 		80 69 21790 25 6080-6184
DLW Works Shunters (MG) 1967+ DLW 0-B-0 250 ?? ?? ?? 2 (3?) 1009
1007 converted to BG No. 10956
1008 unknown
NG Diesels
ZDM-1 1955 Arn. Jung B+B 2x145 33 29 8790 5 543-547
(543-546 rebuilt as NDM-1)
ZDM-2 1964-65 Maschi-
nenbau Kiel		 B-B 700 (650 net) 50 32 10560 25 123-147
ZDM-3 1970-82 CLW B-B 700 50 down / 32 up 35 10500 40 148-167/178-187
168-177 (ex-ZDM-4)
ZDM-4 1975-77 CLW 1-B-B-1 700 50 39 7800 10 168-177
(later rebuilt as ZDM-3)
ZDM-4A 1982-90 CLW 1-B-B-1 700 50 39 7800 39 198-236
ZDM-5 1989+ CLW B-B 450 50 23 ?? 41+ 501+
NDM-1 1955 Arn. Jung B+B 2x145 33/16 29 8790 7 500-506
(500, 504-506 ex-ZDM-1)
NDM-5 1987-89 CLW B-B 450 50 22 ?? 11 801-811
NDM-6 1997 BHEL B 335 ?? ?? ?? 6? 600-605?

 

Electric Locomotives
Class Year Maker Wheels Power
(hp)		 Speed
(km/h)		 Weight
(tonnes)		 Starting TE
(kg force)		 Quantity Serial Nos.
Broad-gauge DC Electrics
WCP-1 1928-30 SLM /
MetroVick 		2-Bo-A1 2160
(1860 cont.) 		120 102-105 15240 22 20002-023
WCP-2 1938 SLM /
MetroVick 		2-Bo-A1 2160
(1860 cont.) 		120 102-105 15240 1 20024
WCP-3 1928 HL / GEC 2-Co-2 2250
(2130 cont.) 		120 113 10890 (1 hr) 1 20000
WCP-4 1928 HL / BB 2-Co-2 2390 120 111 11300 (1 hr) 1 20001
WCM-1 1954-55 VF / EE Co-Co 3700
(3170 cont.) 		105-120 124 31300 7 20066-072
WCM-2 1956-57 VF / EE Co-Co 3120
(2810 cont.) 		105-120 113 31300 12 20175-186
WCM-3 1958 Hitachi Co-Co 3600
(2460 cont.) 		105-120 113 28200 3 20073-075
WCM-4 1960 Hitachi Co-Co 4000
(3290 cont.) 		105-120 125 31300 7 20076-082
WCM-5 1961-63 CLW Co-Co 3700 105-120 124 31300 21 20083-103
WCM-6 1995 CLW Co-Co 5000 cont. 105 123 ?? 2 20187, 20188
WCG-1 1928-29 SLM / VF /
MetroVick 		C+C 2600-2890 (2230 cont.) 72-80 125 30480 41 20025-065
WCG-2 1970-76 CLW Co-Co 4200 (1640 1hr cont. in series mode) 80 132 35600 57 20104-160
Broad-gauge AC Electrics
WAM-1 1959-60 K-M / Krupp /
Alst / Niv./
SFAC 		B-B 3010 (2870 cont.) 112 74 25000 100 20200-20299
WAM-2 1960-64 Mitsubishi Bo-Bo 2910 (2790 cont.) 112 76 25240 36 20300+
WAM-3 1964 Mitsubishi Bo-Bo 2910 (2790 cont.) 112 76 25240 2 20336 & 20337
WAM-4 1970-1983 CLW Co-Co 3850 (3640 cont.) 110-120 113 33840 500+ (incl. WAM-4A) 20338 (renumbered 20400)
20400-20699/
21200-21399
21100-21138 WAM-4B -> WAG-5/5B
WAM-4A 1979-?? CLW Co-Co 3850 (3640 cont.) 80 120 ?? (see WAM-4) (see WAM-4)
WAP-1 1980-?? CLW Co-Co 3900 (3760 cont.) 130 112 22400 77+ 22000-22076
Many being converted to WAP-4.
22061 first converted to WAP-4
WAP-3 1987-?? CLW Co-Co 3900 (3760 cont.) 140 112 22400 5? 22005-22009
Now reverted back to WAP-1.
WAP-4 1994+ CLW Co-Co 5350 (5000 cont.) 140 113 30800 600+ 22061
22200-22399, 22500-22908
WAP-5 1995+ ABB / CLW Bo-Bo 6000 (5440 cont.) 160 79 26300 45+ 30000-30044+
30008 not in use.
WAP-6 1997 CLW Co-Co 5350 (5000 cont.) 160 design
105(restricted)
170(upgrade) 		113 30800 16? 22400??, 22401-22416+
WAP-7 2000 CLW Co-Co 6350 140 123 36000 50+ 30201-30250+
WAG-1 1963-66 Niv./SFAC/
CLW 		B-B 2930 (2900 cont.) 80 85 30000 112 20700-20709 (Niv. / SFAC)
20710-20791 (CLW)
20849-20868 (Niv. / SFAC)
WAG-2 1964-65 Hitachi /
Toshiba /
Mitsubishi 		B-B 3450 (3180 cont.) 80 86 30000 45 20804-848
WAG-3 1965 Henschel B-B 3590 (3180 cont.) 80 87 30000 10 20869-878
WAG-4 1966-71 CLW B-B 3590 (3180 cont.) 80 88 30000 186+ 20900-21085
WAG-5 1988-98 CLW / BHEL Co-Co 4360 (3850 cont.) 80-100 119 33500 1100+ (incl. variants) 23275-23355 (incl. WAG-5A)
23356-23800+ incl. variants
WAG-5HB 24001-24075+
WAG-5A 1983-88 CLW Co-Co 4360 (3850 cont.) 80 (100?) 119 33500 (see WAG-5) 23000-23275
23275-23355
(incl. WAG-5)
WAG-5B 1978-83 CLW Co-Co 4360 (3850 cont.) 80 119 33500 54 21100-21138 (ex-WAM-4B)
21139-21153
WAG-6A 1988-89 ASEA Bo-Bo-Bo 6110 (6000 cont.) 100 123 44900 6 26000-26005
WAG-6B 1988 Hitachi Bo-Bo-Bo 6110 (6000 cont.) 100 123 44950 6 26010-26015
WAG-6C 1988 Hitachi Co-Co 6110 (6000 cont.) 100 123 44950 6 26020-26025
WAG-7 1992+ CLW Co-Co 5350 (5000 cont.) 100 123 (WAG-7H 132) 41000 (WAG-7H 45000) 200+ 27001-27699+
except 27061 converted to WAG-7H
27002 tried as WAG-7H
WAG-8 1996 BHEL Co-Co 5000 cont. 100 ?? ?? 1 or 2? Prototype;
no IR numbers?
WAG-9 1996+ ABB / CLW Co-Co 6125 (6000 cont.) 100 123 (135 WAG-9H) 46900 (52000 WAG-9H)
36000 cont. 		300+ ABB 31000-31021
CLW 31022-31315+
31030 : WAG-9H
Broad-gauge AC-DC Electrics
WCAM-1 1975-79 CLW Co-Co 3850 AC (1 hr)
2930 DC / 3640 AC cont.) 		80-100 DC / 120 AC 113 28200 DC / 33840 AC 53 21800-21852
WCAM-2 1995-96 BHEL Co-Co 3780? DC / 4720 AC cont.
4950 starting 		105 DC / 120 AC 113 26000 DC / 33400 AC 20 21861-21880
WCAM-3 1997+ BHEL Co-Co 4600 (4700?) DC / 5000 AC 105 113 26000 DC / 33400 AC 50 21881-21900 /
21931-21960
WCAG-1 1999-2000 BHEL Co-Co 2930 DC / 4720 AC cont. (?) 100 128 29600 DC / 43500 AC 12 21970-21981
Meter-gauge Electrics
YCG-1 1930 HL / EE Bo+Bo 640 (4x160) 64 43 ?? 4 21900-903
YAM-1 1964-66 Mitsubishi B-B 1740 80 52 19500 20 21904-21923
Battery Electrics
BBCI
shunters 		1927 WBC, English Electric Bo-Bo 240 ?? 58 9530 2 -
NBM-1 1987 BHEL Bo-Bo 80 ?? ?? ?? 3 21951+
Additional comparative specifications of electric locomotives can be found here.

Notes:

  1. Power quoted for diesels is gross power. For some entries net power has also been mentioned.
  2. Power quoted for electrics is the 1-hour rating. For some entries the continuous power is quoted.
  3. Speed is rated maximum speed.
  4. TE = Tractive Effort. Figures quoted are starting TE unless otherwise noted.
  5. ML / S = Mainline / Shunting max. speed

Abbreviations

  1. CLW = Chittaranjan Locomotive Works; DLW = Diesel Locomotive Works (Varanasi)
  2. BHEL = Bharat Heavy Electricals Ltd.; ABB = Asea Brown-Boveri; GE = General Electric
  3. GM = General Motors; Alco = American Locomotive Co.;BB = Brown Boveri; HL = Hawthorn Leslie
  4. Niv = La Brugeoise & Nivelles (Belgium); SFAC = Soc. des Forges et Ateliers (Belgium)
  5. EE = English Electric; K-M = Kraus-Maffei; Alst. = Alsthom; SLM = Schweizerische Lokomotiv Fabrik (Switzerland)

Disclaimer: The information in this document is provided "as-is", without any warranty, express or implied, regarding its accuracy or suitability for any purpose. Neither BORHT nor IRFCA members are liable for any loss or damages, direct, indirect, incidental, or consequential, arising out of the use of the information in this document.

Acknowledgements: BORHT has been very generous in permitting the use of data from its book, "Diesel and Electric Locomotives of Indian Railways". (Click here for bibliographic and ordering information.) An enormous debt is owed the late Mr Jal Daboo, the author of the book, who very painstakingly gathered the data from many sources. Corrections to Mr Daboo's data, information on recent IR locomotive models, suggestions and help in collating and formatting the data, and other assistance were provided by members of the IRFCA mailing list, including John Lacey, I S Anand, Roderick Smith, Prakash Tendulkar, and Mark Bristow.

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