by
Sr.EDSE / RDSO
RESEARCH DESIGNS AND STANDARDS ORGANISATION
Indigenous Development
during 1970-1990
WCG2
Import during 1960s
1970
4200 HP DC
WAG5
1980
WAG1/WAG2
3850 HP AC
WAG7
2900 HP AC
1990
5000 HP AC
Indigenous Development during 1970-1990
WAM4: Year 1970
3400 HP ,AC
110 Kmph
Import during 1960s
WCAM2: Year 1990
5000 HP,AC-DC
120 Kmph
WAP3 : Year1987
3900 HP ,AC
160 Kmph
WAM1/WAM2/WAM3
2800 HP AC , 110 kmph
WAP4:Year 1990
5000 HP, AC ,
140 Kmph
Up-gradation of Technology : RDSO’s Efforts
Design and development of
Silicon Diode Rectifiers in place of
Mercury Arc Rectifier
Co-Co , High Adhesion Bogies in lieu of
B-B/Bo-Bo Bogies
Roller Bearings to replace Plain sleeve
bearings for Axle Boxes and Motor
Suspension
Dual brake conversion
Work Horses of Indian Railways
Freight : 5000 HP 100 kmph WAG7
Passenger : 5000 HP 140 kmph WAP4
Fabricated high adhesion Bogie
CO-CO Flexi coil Mark 1 Cast Bogies
Static Converters
Roof Mounted DBRs
Microprocessor based Control
and Fault Diagnostics System
Static Converters
Microprocessor based Control and
Fault Diagnostics System
Cable head
termination
in place of
condenser
bushings
6P Conversion
of locomotives
Condition Monitoring of
Transformers and tap changers
with DGA , traction motors
Smoothing
reactor(SL30) in place of
earlier SL-42
Vacuum
Circuit
Breaker in place of
Air Blast CB
Electron Beam irradiated
Cross Linked Cables-low
toxicity , halogen free
and fire retardant
Rockwell
Technology for
casting of CoCo Bogie
Improved insulation
schemes for Traction
Motors and
Transformers
Metallised carbon strips in
pantograph
Microprocessor
based control &
fault diagnostic
system
Tri-plate Panel
mounted
pneumatic brake
equipments
Low maintenance batteries :
avoiding toping up of water
High sump
capacity
compressors
Roof
Mounted
DBR
180
KVA
Static
Inverter in place of
rotary ARNO converter
Air
dryersimproved
reliability of valves
Twin beam head light with DCDC converter and LED based
Flasher and Marker Lights
Vigilance Control Device
USFD of Axles and
Shafts
SAFETY
Roller bearings in place of plain
sleeve suspension bearings for
traction motors and axle boxes
Microprocessor based
speed cum Energy
Monitoring System
NDT for Critical Bogie
Items
Reliability
Measures
Mean Km between
Failures : 50K to 0.5 m
Km
Availability of Locos
increased from 79% to
91%
Maintainability
Measures
Major Overhauls after
1.2 m Km as against 0.6
m Km early
On-time performance of
Passenger Trains:
improved by 25%
Safety
Measures
Enhanced Safety Record
Acquisition of Thryristorised Locos : 1980
WAG6A : 6280HP , 100 kmph
6 Locomotives from M/s ASEA,
Sweden
Bo-Bo-Bo Bogie
Type L3 M 450-2 Traction Motor
fully suspended
WAG6B&C : 6050HP , 100 kmph
6 Locomotives each from M/s Sumitomo
Corp, Japan
Bo-Bo-Bo & Co-C0 bogie
Type HS 15556-OIR & HS 15256-UIR
Hitachi Traction Motor
Not pursued further due to availability of better three phase
technology and obsolescence of thryristorised technology
Indigenous Design and Development in 2000
WAP7
Import during 1996
2000
Passenger :6000 hp Co-Co Bogie
WAG9H
Freight : WAG9 , 6000 hp
2001
Freight :6000 hp Max Tractive Effort: 52 t
Passenger : WAP5 , 6000 hp
High Torque
Traction
Motors
RDSO’s Efforts
Indigenisation of Loco Equipments :75 %
Import substitution
Up-gradation of Software
Design and development of Speed Sensors
for better Slip Slide Control
Measures to improve the Reliability of
Traction Motors
Design and development of High Torque
Traction motors : Max Torque- 10,300 Nm in
place of existing 9200 Nm to haul 5200 t
loads at 1: 150 gradient
Area of Co-operation
Traffic Projection in 2011-12
Freight Traffic : 1100 million tonnes (MT) from existing
726 MT
Passenger Traffic : 880 billion passenger Km (BPK)
from existing 700 BPK.
Requirement to increase Average speed of freight trains
High Horse power ,energy efficient,individual axle
control, high adhesion freight locos for Higher Through
put and optimisation of line Capacity .
High Speed ,energy efficient, individual axle control
passenger locos for 225 kmph /300 kmph
Area of Co-operation
IGBT Technology for Power and Auxiliary
Converters
High speed and High Adhesion Bogies
High Reach Pantographs for Double Stack
Containers
Individual Axle Drive with better Adhesion
Control
Reliable Three phase Traction Motors