CLW ranks amongst the biggest main line electric locomotive manufacturing units in the world. It is currently manufacturing three types of locomotives viz. WAG-7, WAP-5 and WAG-9. The fabrication and major items such as shell, bogie, traction motor and switchgear equipments are being done in CLW itself.

It also manufactures traction motors type HS 15250 A. It has recently started manufacturing first 3 phase state of art 1000 HP traction motor type 6 FRA 6068 based on the technology from M/s Adtranz Switzerland.

The production of Electric Locomotives,commenced in 1961. The first 1500 Volt  D.C. Locomotive named 'LOKMANYA' was commissioned by Pandit Jawaharlal Nehru, the first Prime Minister of India, on the 14th October, 1961. The production of 25 KV A.C. LOCO commenced as 'Bidhan'. Subsequently CLW upgraded the horsepower of Electric Loco from 3400 HP to 5000 HP. CLW also built 25 KV/AC/1500 V.D.C. AC/DC Locos. The first loco 'Vallabh ' was commissioned on 30th January'75. Presently, CLW manufacturers only 25 KV/A.C. mainline Electric Locomotives of 5000 HP designated as WAG-7 and WAP-4.

CLW has augmented its production capacity in phases i.e. from 60 to 80 locomotives (Phase-I), 80 to 100 locos (Phase-II) and 100 to 130 locos (Phase-III). Work of augmentation of capacity from 130 to 150 locos (Phase-IV) and 150 to 170 locos (Phase-V) are in progress including facilities for manufacture of 3-phase GTO controlled locomotives 

Starting production of electric locomotives in 1961, CLW has so far produced 14 classes of electric locomotives till 1996-97.The table below gives an account.

Type 

 Class Supply Voltage Horse Power Nos.
DC Mixed Traffic WCM5 1500 V DC 3170 21
DC Mixed Traffic WCM6 1500 V DC 4600 2
DC Freight Traffic WCG2 1500 V DC 4200 57
DC Freight Traffic WCG3 1500 V DC 4600 2
AC/DC Mixed Traffic WCAM4 25 KV AC 3640AC 53
1500 V AC 2930 DC
AC Mixed Traffic WAM4 25 KV AC 3640 500
AC Freight Traffic WAG1 25 KV AC 2900 82
AC Freight Traffic WAG4 25 KV AC 3150 186
AC Freight Traffic WAG5 25 KV AC 3850 930
AC Freight Traffic WAG7 25 KV AC 5000 226
AC Passenger Service WAP1 25 KV AC 3900 106
AC Passenger Service WAP3 25 KV AC 3900 6
AC Passenger Service WAP4 25 KV AC 5000 12
AC Passenger Service WAP6 25 KV AC 5000 16
Apart from these CLW is manufacturing WAG-7 and WAP4 classes of locomotives each rated at 5000 HP and service speed of 100 and 140 kmph respectively. Keeping in view the requirement of more speedy, powerful , and sophisticated locomotives in near future CLW has switched over to 3-phase traction technology and had succesfully serialised production of WAG-9 and other variants WAG-9H , WAP-7 developed in-house are also being produced. 

What is there in these Locomotives ?

WAG7         WAG5        WAG9H         WAP4           WAP7             WAP5 

The WAP-7 and WAG-9H locomotives are recent models turned out by Chittaranjan Loco Works. Both are derivatives of the WAG-9 loco. The photographs and information have been supplied by Sujeet Mishra, of the Traction Software Development Lab at CLW's Centre for Design and Development. 


WAP-7 (photo, 92KB) The WAP-7 is a high-speed passenger version of the WAG-9, with a service speed of 130km/h. Undergoing trials on the Faridabad-Mathura section.


WAG-9H (photo, 75KB) The WAG-9H is a heavier version (by 12 tonnes) of the WAG-9; the higher adhesive weight makes it suitable for hauling heavier freight rakes: 58-wagon BOXN rake, - 4,700 tonnes, on a 1:150 grade. Undergooing trials on the Ujjain-Nagda section. 

A few pictures of early electric locomotives in Europe

                                                                                

Click to enlarge( Source : Internet)

Please visit other pages

 STEAM       DIESEL        ELECTRIC      MILESTONES       Strategy        INNOVATION    3 Phase Technology         

  WAG-5    WAG-7    WAG9h     WAP4        WAP5       WAP7   

 

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