WAG-7A-AC electric.
G-Goods(freight carrier).
WAG-7 (pic on bottom) is an updated version of WAG-5 (pic on top).It was named 'SHANTIDAN' in honor of Mother Teresa. WAG-7 is one of the more economical option and cheapest in the world.Top speed of this locomotive is 100kmph. 1970 locomotives of this type are produced till today.This locomotive was built by Chittaranjan locomotive works and BHEL(Bharat Heavy Electricals LTD). These 5000hp locomotives are responsible for some of the fastest freight movements in Indian Railways. Featuring high adhesion bogie these locos are capable of hauling 3000tonne loads with ease.When launched these came out with a distinctive red/white/blue livery.These locos also featured broad white strips on a red background on front face.This led to railfans calling the livery as 'Tiger Face'.
WDP-4
The WDP-4 also known as EMD GT46PAC is a passenger hauling diesel-electric locomotive with ac electric transmission. It is a passenger version of previous WDG-4 freight locomotive.It is capable of hauling 24 coach trains at 110-120 kmph. It has a top speed of 160 kmph.The picture shown below is the inside view of the locomotive.The locomotive has a 16 cylinder 710G3B diesel engine with a maximum speed of 904rpm.There are 3 variants of this loco-the original WDP-4 which is a 4000hp loco,the WDP-4B which is a 4500hp loco 126tonne weighed loco with a single cab and the newest WDP-4D which is a 4500hp loco with dual cabs.This is very fuel efficient and has minimal exhaust emissions unlike ALCO based locomotives thanks to its 2-stroke high efficient diesel engine.This locomotive is housed in seven loco sheds in Indian Railways.
W-Broad Gauge.
D-Diesel.
P-Passenger.
The WDP-4 also known as EMD GT46PAC is a passenger hauling diesel-electric locomotive with ac electric transmission. It is a passenger version of previous WDG-4 freight locomotive.It is capable of hauling 24 coach trains at 110-120 kmph. It has a top speed of 160 kmph.The picture shown below is the inside view of the locomotive.The locomotive has a 16 cylinder 710G3B diesel engine with a maximum speed of 904rpm.There are 3 variants of this loco-the original WDP-4 which is a 4000hp loco,the WDP-4B which is a 4500hp loco 126tonne weighed loco with a single cab and the newest WDP-4D which is a 4500hp loco with dual cabs.This is very fuel efficient and has minimal exhaust emissions unlike ALCO based locomotives thanks to its 2-stroke high efficient diesel engine.This locomotive is housed in seven loco sheds in Indian Railways.
WDG-3AW-Broad Gauge.
D-Diesel.
G-Goods (freight carrier)
The WDG-3A was developed to overcome the shortcomings of WDM2. One of the most successful locomotives used in Indian Railways.Around 1170 locomotives of this type are produced till now.Very rugged and very reliable.It has a maximum speed of 120 kmph.Built by Diesel Locmotive Works, Varanasi in 1995.It has a power output of 3100hp and a speed of 1050rpm. A very successful class of diesel freight carriers in Indian conditions.Most of them have air braking system but some are being retrofitted with vacuum brakes to make them dual braked to handle the vacuum braked freight stock.This loco weighs upto 123tonne.ALCO high adhesion co-fabricated bogies are used.Newer units of this class are fitted with microprocessor governors.Has balancing speed of 69kmph with 58BOXN wagon load.
WAP-7
W-Broad gauge.
A-AC Electric
P-Passenger.
This one is capable of hauling trains at a speed range of 110 to 140 km/hr(68 to 87 mph).It is used in many divisions in India Railways.There are around 270 locos of this type produced.Like any other electric train it also gets its energy from the overhead line.The device which connects a loco and the overhead line is the pantograph. Its max. speed is around 93 mph.WAP-7 locomotivecan deliver 6300hp with regenerative braking being one of its salient features.The regenerative braking is deployed on down gradients conserving energy to the tune of 30-35 percent.It has an inbuilt microprocessor based fault diagnostic system to make trouble shooting easier.Another feature of this locomotive is that it eliminates the need to separate EOG sets for air-conditioning in long distance trains hence providing significant amount of savings.
A common engine seen in Indian railways.It is technically known as WAP-4.
W-Broad gauge,
A-AC electric,
P-Passengers.
It was introduced in 1994 to haul heavier trains(24-26 coaches).It is a modified version of WAP-1.I have travelled in trains which are hauled by this locomotive.Basically an electric locomotive gets its working fuel from the overhead lines(25kv).(Warning- Don't play near these lines).Here there are around 770 locos of this type. Chittaranjan locomotive works is the company which produces electric locos for Indian Railway.The loco has a streamlined twin cab carbody design with top mounted headlights.Original units weighed 120 tonnes , which was bought down to 112 tonnes through the use of lighter materials.Some of the WAP-1 and WAP-3 and all WAP-6 units were built to WAP-4 specifications after replacing the bogies and electricals. It has different underframe for handling buffing loads.Some units are fitted with speed recorders and some changes to control electricals. Some units also have data recorders for energy consumptions.415volts,3 phase,50Hz power supply is used to drive various auxiliary motors like 1)Traction motor blowers, 2)Transformer radiator blower, 3)Transformer oil pump, 4)Smoothing reactor blowers, 5)Silicon rectifier blowers, 6)Battery charges.The 3 phase, 415 volts is obtained from single phase supply by Arno converter or static converter.WAP-4 have a maximum speed of 140kmph(service) and 160kmph(test runs).The braking system used is graduated air braking system.The loco and train braking both uses air braking system.Some newly introduced WAP-4 have air conditioning for the comfort of the loco pilots.
WCAM-3
W-Broad Gauge.
CA-Both AC and DC.
M-Both Goods and Passengers.
WCAM-3 is the third in the series of WCAM locomotives. These are specifically designed for use in central railways in the ghat section towards Pune. The dual-voltage WCAM series locomotive haul intercity trains out of Mumbai DC suburban region on central railways which is on a 1500V DC overhead system as opposed to other parts of India which have 25000V DC overhead. These upgraded dual-traction models deliver 4600hp in DC mode and 5000hp in AC mode and were jointly developed by RDSO and BHEL in 1997. Maximum speed of this is 105kmph(65mph) in DC mode and 120kmph(75mph) in AC mode. A total of 53 locomotives of this kind are produced till date. WCAM-3 is used for hauling the trains Deccan Queen, Tapovan Express, Panchavati Express, Mahalaxmi Express, Pune-Nagpur Express. 
WAM-4
W- Broad Gauge
A- AC Electric
M- Mixed (Freight and Passengers)
WAM-4 is a very successful class of 25Kv ac electric locomotives used in India . They use the same power bogies as the successful WDM-2 class of diesel-electric locomotives. The WAM-4 locomotive is still among the most heavily used electric locomotive of Indian Railways. A single WAM-4 can generally haul upto 24 coach passenger rake. This locomotive class has been seen in many variations, as a lot of workshops and sheds have carried out modifications of their own.WAM-4 was built by Chittaranjan Locomotive Works (CLW) during the years 1970-1983. This locomotive has the following nicknames- Ananth, Rajatabha, Surubhi, Navchetna. WAM-4 has maximum speeds of 110kmph(68mph) and 135kmph(84mph). The variations in speed is due to the difference in settings of the traction motors used in this locomotive. Some of the sheds holding this loco are Arakkonam, Bhilai, Tatanagar, Visakhapatnam, Vijayawada, Vadodara.
WDM-3A
W- Broad gauge
D- Diesel
M-Mixed(For both freight and passenger)
The class WDM-3A is Indian Railways work horse diesel locomotive. Since 1993, it has been manufactured in India by Diesel Locomotive Works (DLW), Varanasi. The WDM-3A is a variant of the original WDM-2C. These units have been retrofitted with dual brakes, in addition to air and vacuum brakes. The WDM-3A locos have a maximum speed of 120kmph (75mph). This loco is now widely used across India for long distance passenger trains due to its ruggedness and high tractive loads and acceleration. The first one of its kind was delivered on 22nd August, 1994, it was then WDM-2C. More than 150 locos were produced until 1998. It uses a 16 cylinder 4 stroke turbo diesel engine which can give a power output of 3100hp. The WDM-3A also laid the foundation for the remaining WDM-3x series. All the dimensions of WDM-3A are identical to that of WDM-2 except for the baldies.
WDM 1 W- Broad gauge
D- Diesel
M- Mixed(For both freight and passenger)
The first class of WDM locomotives were used for hauling both freight and passenger trains. These are the first mainline diesel engines imported after Independence. They were even the fastest diesel locomotives till the advent of WDM 2 and WDM 4. They used to haul ore/freight trains on SER. In the end they were relegated to shunting/piloting duty or hauling sugarcane freight trains. One unit is preserved at National Rail Museum, Delhi. These locomotives were made by ALCO during the years 1957-59. A total of 100 locomotives of this kind were produced during this period. These locomotives used 12 cylinder four stroke engines. It had a maximum speed of 104kmph (65mph) and its rated speed was about 100kmph (62mph).
W-Broad Gauge
D- Diesel
M- Mixed(For both freight and passenger)
The class WDM-2 is another work horse of the Indian Railways. It was first produced by ALCO in 1962. Later it was manufactured in India by DLW, Varanasi in the year 1964. This is the most common diesel locomotive of Indian Railways. WDM-2A is a variant of the original WDM-2, these units were retrofitted with air brakes, in addition to the original vacuum brakes. WDM-2B is a more recent locomotive, built with air brakes as original equipment. The WDM-2 locos have a maximum speed of 120kmph (75mph) restricted to 100kmph (62mph) when run long hood forward. Eight WDM-2 locomotives were purchased by the Sri Lanka Railways in 1996. They were the longest and most powerful locomotives owned by Sri Lanka Railways at that time.
WDG-4
W- Broad Gauge
D - Diesel
G -Freight
The WDG-4 is a freight hauling diesel electric locomotive with AC electric transmission built by General Motors Electromotive division in 1997-98 for Indian Railways. These locomotives entered into service in the year 1999. With six traction motors this locomotive has the capability of touching 105kmph (65mph) with a fully loaded freight train of 58 wagons. The locomotive has been praised for its ability to work smoothly in regions with massive gradient, especially in the Braganza ghats and the Subrahmany ghats having gradient of 1:37 and 1:50 respectively. It uses a 2 stroke V16 diesel engine with turbocharging. The locomotive and train brakes are air brakes.The power output of this locomotive is 4000hp (2980kW) / 4500hp (3360kW).
No comments:
Post a Comment