Industrial training Electrical Loco Shed, Ghaziabad Name : ABC ME-4 th YEAR (Roll No.)
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Industrial training Electrical Loco Shed, Ghaziabad
Name : ABC
ME-4th YEAR (Roll No.)
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
INTRODUCTION
Work ForceSHED OFFICERS• Sr.DEE - 1• DEE - 1• ADEE - 2SHED STORES DEPOT• SMM – 1SUPERVISORS, ANCILLARY AND OTHER STAFF• ELS/GZB:- SS-992, OR-871• RSO:- SS-166, OR-172
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
• 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.
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 km after POH or first commissioning or 3 years whichever is earlier � 1 month.
Homing Electric Loco Shed or Nominated Workshop.
vii) Periodical overhaul (POH) 600,000 km after commissioning or last POH or 6 years whichever is earlier � 3 month.
Workshop nominated for the purpose
LOCOS AND THERE MAINTAINCECoaching locos - WAP-1/WAM-4/WCAM-1, 2, 3/WCAG-1/WCG-2/WCM-6
Maintenance Schedule Periodicity DurationTrip inspection (TI) After 3000 kms or one trip whichever is later. 2 hrs
IA 40 + 3 days 4 hrsIB 80 + 3 days 6 hrsIC 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
LOCOS AND THERE MAINTAINCECoaching locos - WAP-4
Maintenance Schedule Periodicity DurationTrip inspection (TI) After 3000 kms or one trip whichever is later. 2 hrs
IA 40 + 3 days 4 hrsIB 80 + 3 days 6 hrsIC 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
LOCOS AND THERE MAINTAINCE
3-Phase LocoCoaching 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 hrsIB 180 days 6 hrsIC 270 days 8 hrs
MOH 18 months 6 working days
IOH 4.5 years + 6 months or 12 lakh kms. whichever is earlier.
WAP-7 - 11 working daysWAP-5 - 20 working days
POH 9 years + 6 months or 24 lakh kms. whichever is earlier. 28 working days
LOCOS AND THERE MAINTAINCE
Freight locos - WAG-5 locos
Maintenance Schedule Periodicity DurationTrip inspection (TI) 15 days 2 hrs
IA 45 + 3 days 4 hrsIB 90 + 3 days 6 hrsIC 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
ELECTRIC LOCOMOTIVE PARTS• Diagram shows an AC electric locomotive, i.e a locomotive collecting AC power
from an overhead line.
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.
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
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
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
.
High power-to weight ratio.Fewer LocomotiveFast AccelerationHigher limit of speedHigher hauling capabilityNo carbon emissionLess noise pollutionMaintenance 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.
ADVANTAGE OF ELECRICAL LOCO
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.
DISADVANTAGES
Thank You!!
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