The document outlines the establishment and functioning of the Electric Loco Shed in Ghaziabad, set up in 1976 for the maintenance of various electric locomotives. It details the workforce structure, inspection schedules, and maintenance procedures for different types of engines, including electric and freight locomotives. The document also highlights the advantages and disadvantages of electric traction compared to steam engines.

1. Industrial training
Electrical Loco Shed, Ghaziabad
Name : ABC
ME-4th YEAR (Roll No.)

2. INTRODUCTION
ESTABLISHMENT
> Electric Loco Shed was set in 1976 by Railway
Electrification Organisation (8910 SQ. MTRS).
> It’s main purpose is of maintenance of
WAP1,WAP4,WAP5,WAP7 ,WAG5, WAM4 engines.
INITIAL COST
Rs. 1.5 (IN CRORES)
PRESENT LOCO HOLDING
184

3. INTRODUCTION
Work Force
SHED OFFICERS
• Sr.DEE - 1
• DEE - 1
• ADEE - 2
SHED STORES DEPOT
• SMM – 1
SUPERVISORS, ANCILLARY AND OTHER STAFF
• ELS/GZB:- SS-992, OR-871
• RSO:- SS-166, OR-172

4. SYNTAX USED IN LOCOS
• The first letter (gauge)
• W – Indian broad gauge (the "W" Stands for Wide Gauge - 5 ft 6 in)
• Y – metre gauge (the "Y" stands for Yard Gauge - 3 ft or 1000mm)
• Z – narrow gauge(2 ft 6 in)
• N – narrow gauge (toy gauge) (2 ft)
• The second letter (motive power)
• D – diesel
• C – DC electric (can run under DC overhead line only)
• A – AC electric (can run under AC overhead line only)
• CA – both DC and AC (can run under both AC and DC overhead
line); 'CA' is considered a single letter
• B – Battery electric locomotive (rare)
• The third letter (job type)
• G – goods

5. • P – passenger
• M – mixed; both goods and passenger
• S – shunting (also known as switching engines or switchers in
the USA and some other countries)
• U – electric multiple unit (used to carry commuters in city
suburbs)
• R – Railcars
• For example, in "WDM 3A":
• "W" means broad gauge
• "D" means diesel motive power
• "M" means suitable for both goods and passenger service
• "3A" means the locomotive's power is 3,100 hp ('3' stands for
3000 hp, 'A' denotes 100 hp more)
• Or, in "WAP 5":
• "W" means broad gauge
• "A" mean AC electric traction motive power
• "P" means suitable for Passenger service
• "5" denotes that this locomotive is chronologically the fifth
electric locomotive model used by the railways for passenger
service.

6. SCHDULED INSPECTIONS
Nature of
Inspection/overhaul Place where to be carried out
i) Trip Inspection, IT
Outstation shed or homing loco
shed as convenient.
ii) Monthly Inspection, IA + 5 days
Homing or nominated Electric
Loco Shed
iii) Two-monthly Inspection, IB + 5days. Homing Electric Loco Shed
iv) Four monthly Inspection, IC + 10 days Homing Electric Loco Shed
v) Annual overhaul, AOH + 15 days. Homing Electric Loco shed
vi) Intermediate overhaul, IOH 300,000
Homing Electric Loco Shed
km after POH or first commissioning or 3
or Nominated Workshop.
years whichever is earlier ε 1 month.
vii) Periodical overhaul (POH) 600,000
km after commissioning or last POH or 6
years whichever is earlier ε 3 month.
Workshop nominated for the
purpose

7. LOCOS AND THERE MAINTAINCE
Coaching locos -WAP-1/WAM-4/WCAM-1, 2, 3/WCAG-1/WCG-
2/WCM-6
Maintenance Schedule Periodicity Duration
Trip inspection (TI) After 3000 kms or one trip whichever is later. 2 hrs
IA 40 + 3 days 4 hrs
IB 80 + 3 days 6 hrs
IC 120 + 3 days 8 hrs
AOH 12 months + 15 days
6 working
days
IOH
36 months + 1 month or 4 lakh kms (6 lakh for
WAP-1 loco) whichever is earlier.
9 working
days
POH
6 years + 3 months or 8 lakh kms (12 lakh for
WAP-1 loco) whichever is earlier.
24
working
days

8. LOCOS AND THERE MAINTAINCE
Coaching locos -WAP-4
Maintenance Schedule Periodicity Duration
Trip inspection (TI) After 3000 kms or one trip whichever is later. 2 hrs
IA 40 + 3 days 4 hrs
IB 80 + 3 days 6 hrs
IC 120 + 3 days 8 hrs
AOH 18 months + 15 days *
6 working
days
IOH 36 months + 1 month or 6 lakh for whichever is earlier.
9 working
days
POH 6 years + 3 months or 12 lakh kms whichever is earlier.
24 working
days
*On trial basis for 2 years

9. LOCOS AND THERE MAINTAINCE
3-Phase Loco
Coaching Locos - WAP5/WAP7 locos
Maintenance
Schedule
Periodicity Duration
Trip inspection (TI) 3000 kms or one trip, whichever is later 2 hrs
IA 90 days 4 hrs
IB 180 days 6 hrs
IC 270 days 8 hrs
MOH 18 months 6 working days
4.5 years + 6 months or 12 lakh kms.
IOH
whichever is earlier.
WAP-7 - 11 working days
WAP-5 - 20 working days
POH
9 years + 6 months or 24 lakh kms.
whichever is earlier.
28 working days

10. LOCOS AND THERE MAINTAINCE
Freight locos -WAG-5 locos
Maintenance Schedule Periodicity Duration
Trip inspection (TI) 15 days 2 hrs
IA 45 + 3 days 4 hrs
IB 90 + 3 days 6 hrs
IC 135 + 3 days 8 hrs
AOH 18 months + 10 days
6 working
days
IOH 54 months + 1 month or 6 lakh kms whichever is earlier.
9 working
days
POH 9 years + 3 months or 12 lakh kms whichever is earlier.
28 working
days

11. ELECTRIC LOCOMOTIVE PARTS
• Diagram shows an AC electric locomotive, i.e a locomotive collecting AC power
from an overhead line.

12. ELECTRIC LOCOMOTIVE PARTS
• Red Lines- 1-phase A.C. circuit
• Green Lines- D.C. circuit
• Purple Lines- 3-phase A.C. circuit
• The current passes directly from the
pantograph (or shoe) to the main and auxiliary
inverters.

13. ELECTRIC LOCOMOTIVE PARTS
• Axle Brush-The means by which the power supply circuit is
completed.
• Battery-To provide start up current and for supplying essential
circuits
• Circuit Breaker-To isolate the power supply when there is a
fault, or for maintenance
• Converter-For converting alternating current to direct current
or vice versa
• Cooling Fans-To keep the thyristors and other electronic
power systems cool
• AIR BRAKE-Uses compressed air to apply the brake block (or
pad) to the wheel and to control the operation of the brake
along the train

14. ELECTRIC LOCOMOTIVE PARTS
• VACCUM BRAKE-The automatic braking system. The brake
pipe- is normally evacuated by a motor driven exhauster to
create a vacuum and release the train brakes.
• Rectifier-Converter consisting of thyristors and diodes which
is used to convert AC to DC
• Tap Changer-Camshaft operated set of switches used on AC
electric locomotives to control the voltage taken off the main
transformer for traction motor power
• AMO CONVERTER-For conversion of single phase in-coming
supply into 3 phase out- put supply
• Traction Motor-To provide the final drive to a locomotive or
train axle

15. ELECTRIC LOCOMOTIVE PARTS
• TRANSFORMER-To step down the voltage as well as to control
the same for feeding to the traction motors
• RECIPROCATING AIR COMPRESSOR-three cylinders, two
stages, and air-cooled compressor driven by an induction
motor
• Pantograph-The current collection system used by
locomotives and trains on routes electrified with overhead
lines
.

18. ADVANTAGE OF ELECRICAL LOCO
High power-to weight ratio.
Fewer Locomotive
Fast Acceleration
Higher limit of speed
Higher hauling capability
No carbon emission
Less noise pollution
Maintenance cost is 50% of that for steam engine.
Steam engine requires two hours for heat up whereas
electric engine start within moment.
High torque motor are used in electric traction.

19. DISADVANTAGES
Significant capital cost of electrification.
Maintenance cost is high.
Overhead wires further limit the clearance in tunnel.
Railway traction need immune power, with no cuts.

20. Thank You!!