PRESENTATION ON PRACTICAL TRAINING UNDERTAKEN AT NORTH WESTERN RAILWAY,JAIPUR

SUBMITTED TO:- SUBMITTED BY:-MR. VIBHOR CHAUHAN (HOD) SHUVAM ANUPAM DEPT. OF ELECTRICAL ENGG. BTECH (EE) 7TH SEM, JIT,JAIPUR

TABLE OF CONTENTS:- History of Indian railways Types of traction systems Non-electrical traction system coaches System of track electrification Power supply for Jaipur railway station Control panel Ac generators Single line diagram of AC- coaches AC system and AC coaches load Major equipment's conclusion

Indian Railways Rail was introduced in madras in 1832. first train

in Indian railways was between Mumbai to thane in 16th April 1853.

There are 17 zones in Indian railways. Jaipur junction was established in 1875 and in

2002 it was made as NWR rail division One of the India's most luxurious train the place

on wheels stops at Jaipur. Indian railway is second biggest electrified

system after Russia. In India 21,000 km of total routes are electrified. Revenue of Indian railways is approx.

Types of traction system

System of traction:-1. Non-electric traction system ex.- Direct system engine drive2. Electric traction system a. self contained locomotives b. electric vehicles fed from distribution networks

NON ELECTRIC TRACTION SYSTEM COACHES

COACHES On the self generating two tier AC Coaches, Chair car and

compressor coaches two brushless alternators of 18 KW capacities are provided.

The DC outputs from the two alternators are paralleled with the battery.

In mid-on generation coaches usually 30KV brush less alternators are used and generation are nearly 415v- three phase 5 cycles.

On end-on generation coaches power is at 750V AC or 415V AC stepped down at 110v AC

Express trains having load using EOG coaches. Both EOG and MOD coaches the light and fan are used at 110V AC

FLOW CHART

ALTERNATOR RRU&ERRU

INVERTER BATTERY BANK

POWER PANNEL EQUIPMENTS

CONTROL PANNEL AC PLANT

SYSTEM OF TRACTION ELECTRIFICATION

The traction electrification are classified into:- DC system Single phase AC system Three phase AC system Composite system Single phase-three phase system Single phase-Direct current system

POWER SUPPLY FROM JAIPUR RAILWAY STATION The electric power supplies arrangement for operation Light fan, led display and other electric equipment's To junction offices , DRM office and railway colonies The panels are:- LOCO colony panel Station panel ganpati nagar panel

CONTROL PANEL

AC GENERATOR

SCHEMATIC DIAGRAM OF Ac SYSTEM

LOAD IN AC COACHES

NAME OF MOTOR

MOTOR RATING

NO. OF MOTORS

BLOWER 1.5 HP 1

COMPRESSOR 7 HP 2

CONDENSOR 1.5 HP 2

MOTOR TYPES USED IN AC COACHES

MAJOR EQUIPMENTS BRUSHLESS ALTERNATORS:- Induction type alternators used in non AC coaches are

4.5W/37.5A/120V DC .185KW 2 Unit in parallel with RRU, battery, brushless alternators are used on AC coaches

The brushless alternators with the help of static rectifier cum regulator unit

is capable of developing voltage from minimum speed to maximum speed

RECTIFIER CUM REGULATOR Rectifier cum regulator unit:- RRU is connected just beside the alternator to rectify the output of the

generator A magnetic amplifier is connected which convert three phase input to

110v DC A safety fuse of 10amp is connected to prevent the RRU box from

abnormal conditions RRU have following functions:- To rectify the 3-phase AC output the alternator through DC full wave

rectifier Regulate the voltage generated by alternator at the set value Regulate the output current

BATTERY AND CHARGING TERMINALS The output of RRU is given to battery box to charge the battery In a Non AC-coaches the battery contains 18 cells(6v/120Ah each) In AC-coaches battery contains 56 cells(2v/1100Ah each) BCT is provided for external charging for the batteries at station or

maintenance lines Used battery in train are VRLA(Valve regulated lead acid) Advantages are:--- Topping up is not required Periodical checking of specific gravity is not required Regular maintenance to avoid sulphation of terminals and connections

are not required

ROTARY JUNCTION BOX Rotary junction box are provided inside the coaches. It is used to arrange and control the power supply to various

circuit of coaches( light ,fans etc.) with the help of rotary switches.

4 Rotary switches are connected in box.

1st switch is used to supply 70% light in coaches 2nd switch is used to supply 30% light in coaches 3rd switch is used to supply load of fans in coaches 4rth switch is known as EFT switch

FLOURACENT TUBE LIGHT

IT is a 2 feet long 18watt light provided in coach of sitting gallery and 11watt for toilet gallery's

It works on 110v DC supply It give light at 30% and 70% capacity load . EMERGENCY FEED TERMINALS:----- It is provided at the both the end of the coaches to feed the additional

supply to adjacent the coaches in case of emergency Supply from the healthy coach may be extended to dark coach of

connected wire(1.5x2mtr) for supply to positive and negative terminals of EFTS

conclusion

Practical training is most important of every student to clearify the idea about the particular subject or work

To improve the technical skills

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