Indian locomotive
class WAG-9
WAG-9 is a type of electric locomotive
used in India. It is the most powerful
freight locomotive in Indian Railways' fleet.
It is very similar to WAP-7; the only major
difference being the gear ratio which
makes it suitable for heavy freight
operations. In November 1998,
Chittaranjan Locomotive Works (CLW)
started producing these with indigenous
components. The first one, 'Navyug'
(translated, 'New Era'), was flagged off on
November 14. Like the WAP-5 units, they
have GTO thyristor converters and 3-phase
asynchronous motors.
WAG-9[1]
An Ajni-based WAG9 hauling freight near
Warangal
Type and origin
Power type Electric
Designer ABB Group
Builder Chittaranjan Locomotive
Works
Electric Locomotive Works,
Bhusawal
Build date 1996 till present
Total produced WAG 9: 272
WAG 9H: 830 (as of Dec
2017)
Specifications
Configuration:
• UIC Co′Co′
Gauge 5 ft 6 in (1,676 mm)
Bogies Adtranz Fabricated Flexicoil IV
Wheel New:1,092 mm (3 ft 7 in),
diameter
Half worn:1,054 mm (3 ft
51⁄2 in)
Full worn:1,016 mm (3 ft 4 in)
Wheelbase 15.7 m (51 ft 6 in)
Length 20.562 m (67 ft 51⁄2 in)
Width 3.152 m (10 ft 41⁄8 in)
Height 4.525 m (14 ft 101⁄8 in)
Axle load
WAG-9 : 20.5 tonnes (20.2
long tons; 22.6 short tons)
WAG-9H/Hi/9i : 22.0 tonnes
(21.7 long tons; 24.3 short
tons)
Loco weight
WAG-9 : 123 tonnes (121 long
tons; 136 short tons)
WAG-9H/9Hi/9i : 132 tonnes
(130 long tons; 146 short
tons)
Electric 25 kV 50 Hz AC Overhead
system/s
Current dual pantographs
pickup(s)
Traction WAG-9/9H/9i : Adtranz
motors
6FRA6068
MU working 2
Loco brake Air and Regenerative
Train brakes Air
Safety Slip/slide control, Main
systems
overload relay, Over voltage
relay, No volt protection,
Vigilance Control Device, Fire
Detection Equipment, Fire
Extinguishers and Earth fault
relay
Performance figures
Maximum 120 km/h (75 mph)
speed
Power output 6,120 hp (4,564 kW)
continuous
Tractive effort Starting : 475 kN (107,000 lbf)
(WAG-9), 510 kN (110,000 lbf)
(WAG-9H/i/Hi) Continuous :
325 kN (73,000 lbf) at 50 km/h
Career
Operators Indian Railways
Numbers Starting from 31000+
Nicknames NAVYUG, NAVJYOTI,
NAVDISHA, NAVSHAKTI,
NAVODAY, NAVASHA,
NAVGHANSHAKTI, Dr. Silver,
NAVSHATAK, NAVPRAGATI,
NAVSHAKTI & NAVEEN
Locale All Over India
Disposition active
Newer versions starting from WAG-9
31248 feature full IGBT traction control.
The class is named as WAG-9i. There is a
technical variant of this class named WAG-
9H. The 'H' means Heavy. Another variant
includes WAG-9Hi which seems to be a
combination of the above two.
WAG-9H/9Hi are the second heaviest
locomotives in regular service in India.
These are the only freight dedicated three-
phase AC locomotives in India. Also, WAG-
9i/9Hi are the only electric locomotives in
India fitted with Insulated Gate Bipolar
Transistor (IGBT). They are also the freight
locomotives with highest operational
speed in India. The latest WAG 9 31086 is
based in GOMOH(GMO) and has a unique
red colored livery of red with large G-9
written in retro fonts.
Gomoh based WAG-9 loco - 31049 with BOX - type
freight rake
Indian Railways WAG-9 class AC electric locomotive
no. 31179 pauses at Agra Fort railway station (Indian
Railways station code AF), at the head of a heavily
laden eastbound coal train.
Lallaguda based WAG-9 Locomotives at Ghatkesar
WAG 9 - Navshatak
WAG 9 at Vasai Road
Introduction
This locomotive is referred to as the
"Heavy Haul" freight locomotive of the
Indian Railways (IR). This locomotive was
conceived owing to the extreme growth in
the rail freight transportation sector. The
growth in this sector is considered to be of
great importance in the growth of the
economy of India. This need had arisen
the need for more electrification and
electric locomotives in India. Around 60-
65% of the freight haulage of IR takes
place on the electrified section of the
Golden Quadrilateral (Indian Railways) &
diagonals (which account for 25% of the
route). These routes are very busy routes,
so clearance is a necessity. This power
give it a great sectional clearance ability.
Thus these locomotives are important for
the Indian Railways.
These locos have entered Western Railway
zone of Mumbai. First 22 units were
imported from Adtranz (ABB). Of these,
first six were fully assembled and rest
were in kit from. Again in the kit form,
seven were completely knocked down and
rest partially assembled. CLW started
producing these traction motors on
11/1/1999. The units built by ABB have
double-pan pantographs while CLW built
units have single pan pantographs which
are common in India. This class had a
capacity to MU several units but IR
restricts them to two because of dynamic
loading restriction on most bridges.
Regenerative brakes provide about 260 kN
of braking effort.
WAG-9H also has different application
software than WAG-9. The first WAG-9H
was commissioned on 30 June 2000.
#30130 homed at Gomoh (GMO) shed
was this prototype then rebuilt back to
standard WAG-9 in 2002. This unit has a
livery of twin white stripes on green
instead of yellow stripe on green of the
other WAG-9(x)s.
WAG-9i was introduced in 2010 #31215
homed at GMO shed. With IGBT, even if
one traction motor failed, other traction
motors can function with a total output of
5500 hp.
Newer units of WAG-9 have been marked
as 'CLW Glorious 50 years' on their sides.
Some WAG-9(x)s are fitted with solid
cowcatcher. Others are fitted with grilled
cowcatcher. Some have American style
flasher lamps while others have Indian
style flasher lamps. If you want additional
information about this loco try this link
http://elocos.railnet.gov.in/Study_Material/
TSD_3Ph.pdf
Technical specifications
The WAG-9 technical specifications are:[2]
ABB's 6FRA 6068 (850 kW, 2180V, 1283/2484 rpm, 270/310A. Weight
Traction Motors 2100 kg) Axle-hung, nose-suspended, Class 200 Insulation, Forced Air
Ventilation
Gear Ratio 77:15 / 64:18 / 107:21
ABB's LOT 6500, Class A Insulation, OFAF cooling, Primary (25 kV, 6531 kVA),
Transformer[3] Secondary rating(4x1269 V, 4x1450 kVA, 4x1142 A), Auxiliary (1000 V, 334
kVA, 334 A), Filter (1154 V, 400 kVA, 347 A), 9,450 kg (20,830 lb)
WAG-9/9H : Power converter from ABB, type UW-2423-2810 with SG 3000G X
H24 GTO thyristors (D 921S45 T diodes), 14 thyristors per unit (two units),
OFAF cooling. Line converter rated at 2 x 1269V @ 50 Hz (more or less 3%),
with DC link voltage of 2800V(nominal). Motor/drive converter rated at 2180 V
2 Power Drives
phase to phase, 971 A output current per phase, motor frequency from 0 to
132 Hz.
WAG-9i : IGBT
(Design later used for IORE and China Railways HXD3B; bogie wheelbase
Bogies
1,850 mm (727⁄8 in) + 1,850 mm (727⁄8 in)
Unsprung mass
3.984 t (3.921 long tons; 4.392 short tons)
per axle
123 t (121 long tons; 136 short tons) wag9 / 135 t (133 long tons; 149 short
Loco Weight
tons) wag 9h
Length over
19,280 mm (63 ft 3 in)
head-stocks
Distance
between axles 1,850 mm (727⁄8 in)
of bogie
Cab length 2,434 mm (957⁄8 in)
Pantographs Two Secheron ES10 1Q3-2500, 186 kg (410 lb) (without insulators).
Drive
Gear Pinion
Arrangement
2 HCBO-605- 4.05 m3/s (143 cu ft/s) and 416 kg (917 lb)
115 type
Traction Motor
Blowers by
Flakt and ABB
Traction Motor
Blower Motors
of 200L55- 3 phase, 415 V, 50 Hz, 2930 rpm, 25 kW (34 hp) and Class F insulation
RFXH2A-D1
type by Landert
2 Oil Cooler
Blowers by 4.05 m3/s (143 cu ft/s).
Behr
Oil Cooler
Blower Motors
of 200L55- 3 phase, 415 V, 50 Hz, 2930 rpm, 25 kW (34 hp) and Class F insulation
RH2A type by
Landert
2 TAO8-
2174/15 type
Transformer Oil 1,000 L/min (220 imp gal/min; 260 US gal/min)
Pumps by
Fumettaz
Transformer Oil
Pump Motors
3 phase, 415 V, 50 Hz, 2930 rpm, 4.7 kW (6.3 hp) and Class F insulation
by Landert of
112M-2B type
2 TC10-
2185/29 type
Converter Oil 960 L/min (210 imp gal/min; 250 US gal/min)
Pumps by
Plumettaz
112M-2F type
Converter Oil 3 phase, 415 V, 50 Hz, 2860 rpm, 11 kW (15 hp)., 95 kg (209 lb) and Class F
Pump Motors insulation
by Landert
2 2A3200 C13- 1,745 L/min (384 imp gal/min; 461 US gal/min), 10 kg/cm (2,000 lb/yd),
T32 type Main 600 kg (1,300 lb), and 15 kW (20 hp),
Compressors
by D&M
Main
Compressor
Motors of 3 phase, 415 V, 50 Hz, 730 rpm, 15 kW (20 hp), and Class H insulation
200l55-RPAH8B
type by Landert
2 HCBO-415-60
type Machine
1 m3/s (35 cu ft/s), 140 kg (310 lb), 415 VAC and maximum temperature rise
Room Blowers
of 80 degrees Celsius (176 degrees Fahrenheit)
by Flakt and
ABB
132M-RFXHE2C
type Machine
Room Blower 1 phase, 415 V, 50 Hz, 2830 rpm, 28 kW (38 hp) and Class F insulation
Motors by
Landert
FF 3145 type
Auxiliary
Compressor by 7.03 kg/cm2 (100.0 psi) and 50 kg (110 lb)
D&M and
Bristol
Auxiliary
Compressor 110 V DC, 50 Hz, 1450 rpm and 0.75 kW (1.01 hp) (Air Dryer provided)
Motor by D&M
Ni-Cd(SAF-39
SBL 199) type
Battery by Saft 110 V DC + 20% / -30%, 5 hrs discharging and 78 cells
Groupe S.A.
and Nife
BUR 10 A 100 3 phase, 415 V and 100 kVA
LVPS type
Auxiliary
Converter by
ABB
Nominal supply
22.5 kV
voltage
Normal
variation in 19-27.5 kV
supply voltage
Occasional
maximum 31 kV (15 min)
voltage
Occasional
minimum 16.5 kV (15 min)
voltage
Variation in
supply More or less 8% (46–54 Hz)
frequency
Distance
between neutral 25–50 km (16–31 mi)
section
41 m (135 ft), insulated overlap on both ends and neutral wire which is not
earthed OR
Types of neutral
section 4.61–9.6 m (15.1–31.5 ft), insulated portion of Polytetrafluoroethylene on
both sides and middle portion of neutral section which is solidly earthed
Pantograph
<45 m (148 ft)
bounce
Devices on the Tracks should have DC track circuits. Devices such as axle counters, block
track instruments and point machines may be employed
Communication Control circuits, teleprinter circuits, VHF/UHF and micro-wave circuits may be
network employed
Temperature of
−10 to 50 degrees Celsius (14 to 122 degrees Fahrenheit)
atmosphere
Temperature of 75 degrees Celsius (167 degrees Fahrenheit)
atmosphere in
direct sunlight
Temperature of
atmosphere in 55 degrees Celsius (131 degrees Fahrenheit)
shade
Temperature
inside dead
locomotive
70 degrees Celsius (158 degrees Fahrenheit)
while exposed
to direct
sunlight
Dust
concentration Up to 0.0016 mg/L (5.8 × 10−11 lb/cu in)
in terrain
Operation in
At 10 km/h (6.2 mph) with water of 102 mm (4 in) above rail level
flood
pH value in
8.5
atmosphere
Sulphate in
7 mg/L (2.5 × 10−7 lb/cu in)
atmosphere
Chlorine in
6 mg/L (2.2 × 10−7 lb/cu in)
atmosphere
Conductivity in
130 micro Siemens/cm
atmosphere
Altitude of
Between 160 m (520 ft) above sea level and sea level
operation
Vibration in
300 g (worn gear-pinion)
traction motors
Starting 4 kg/ton
resistance of
BOXN wagons
excluding
locomotive on
level track
Starting
resistance of
6 kg/ton
locomotive on
level track
Rate of change
of tractive 20 kN/sec
effort
Rate of change
of braking 100 kN/sec
effort
Efficiency of
line converter
at continuous 97%
speed for full
load
Buffing load 400 tonnes (390 long tons; 440 short tons)
Ground
clearance
above rail with 102 mm (4.016 in)
full load and full
worn wheels
Traveling
distance 200,000 km (120,000 mi)
annually
Life 35 years
Sandboxes 50 kg (110 lb) each
Max difference
in diameter of
0.5 mm (0.020 in)
wheels on the
same axle
Max difference 4 mm (0.157 in)
in wheels of the
same bogie
Overall max
difference of
20 mm (0.787 in)
diameter of
wheels
Train brakes 242 kN (54,000 lbf), 35% adhesion
Parking brake
37 kN (8,300 lbf)
force
Auxiliary
135 kg (298 lb)
reservoir
Scavenge
blower to
42 kg (93 lb)
traction motor
blower
Oil cooling unit 930 kg (2,050 lb)
Scavenge
blower to
37 kg (82 lb) and 415 V AC
machine room
blower
Cubicle
auxiliary 220 kg (490 lb)
circuits 1
Cubicle control
160 kg (350 lb)
circuits 1
Central
32.34 kg (71.3 lb)
electronics 1
Main reservoir 330 kg (730 lb)
Central
31.34 kg (69.1 lb)
Electronics 2
Cubicle control
170 kg (370 lb)
circuits 2
Cubicle 105 kg (231 lb)
auxiliary
circuits 2
Filter cubicle 400 kg (880 lb)
Cab heater and
110 VAC
crew fans
Fire alarm 1170 Hz
Dials
illumination 10-90%
level
Heater capacity 2.2 kW (3.0 hp)
Sheds Holding WAG-9
Gomoh (GMO)
Ajni (AQ)
Kazipet (KZJ)
Lallaguda (LGD)
Bhilai (BIA)
Tata Nagar (TATA)
Tughlakabad (TKD)
Kalyan (KYN)
Visakhapatnam (VSKP)
Vadodara (BRC)
Ludhiana (LDH)
Kanpur (CNB)
New Katni(NKJ)
Named Locos
1. WAG-9 31022 Pavan
2. WAG-9 31023 Navjyoti
3. WAG-9 31024 Navdisha
4. WAG-9 31030 Navshakti
5. WAG-9 31033 Navoday
6. WAG-9 31058 Nav Ghanshakti
7. WAG-9 31086 Dr Silver
8. WAG-9 31100 Navshatak
9. WAG-9 31112,31121 Navpragati
10. WAG-9 31162 Nav Shakti
11. WAG-9 31215,31255 Naveen
12. WAG-9 31475 Ashok
Performance
Two units of WAG-9 class can haul 4,500
tonnes (4,400 long tons; 5,000 short tons)
of load on grades of 1 in 60 (1.67%). WAG-
9H was expected to haul 58 BOXN
wagons, i.e.,4,700 tonnes (4,600 long tons;
5,200 short tons) without multiple units on
grades of 1 in 150 (0.67%). The locomotive
can run even in 100% humidity and even in
deserts where there is high saturation of
conductive particles. For shunting up to
15 km/h (9.3 mph), it can haul 7,500
tonnes (7,400 long tons; 8,300 short tons)
on grades of 1 in 1000 (0.1%) or less. The
atmosphere may be humid and salty.
Regenerative braking will provide not less
than braking force of 260 kN (58,000 lbf)
at 10–62 km/h (6.2–38.5 mph) speeds
and closer to 260 kN (58,000 lbf) at higher
speeds. Following is the capacity of WAG-
9 while hauling BOX wagons (in tonnes}):[4]
Grade\km/h Start 20 30 40 50 60 70 80 90 100
Level 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 6000+
1 in 500 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 6000+ 4985 4150 3500
1 in 200 5060 5060 5060 5060 5060 4045 3325 2780 2365 2040
1 in 150 4250 4250 4165 4080 3985 3200 2640 2220 1895 1640
1 in 100 3205 2910 2870 2825 2775 2240 1855 1565 1345 1165
1 in 50 1820 1455 1445 1435 1420 1440 945 795 680 590
See also
History of rail transport in India
Indian Railways
Locomotives of India
Rail transport in India
References
1. "IRFCA loco database" .
2. Indian AC electric loco information
3. "Driver's Manual" (PDF).
4. "Trainweb" .
External links
Wikimedia Commons has media related
to Indian locomotive class WAG9.
Specifications
India railway fan club
IR WAG-9 @ Trainspo
IT Locomotive Numbers
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