Locomotive System Overview
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Questions and Answers

What is one of the main parts of the locomotive assembly?

  • Bogie (correct)
  • Chassis
  • Wheel assembly
  • Coupler

    • Which equipment is primarily found on the roof of the locomotive?

  • Driver's seat
  • Main traction transformer
  • Pantograph for current collection (correct)
  • Air reservoirs

    • Where is the machine room located in relation to the driver's cab?

  • Between both driver's cabs (correct)
  • Above the driver's cab
  • Behind the driver's cab
  • In front of the driver's cab

    • What type of switch is included among the roof-mounted equipment?

    <p>Earthing switch</p> Signup and view all the answers

    What equipment is specifically mounted in the underframe of the locomotive?

    <p>Main traction transformer</p> Signup and view all the answers

    Which of the following is NOT mounted on the roof of the locomotive?

    <p>Air reservoirs</p> Signup and view all the answers

    Which component is not typically found in the machine room?

    <p>Primary voltage transformer</p> Signup and view all the answers

    What ensures cooling in the machine room?

    <p>Cooling blowers</p> Signup and view all the answers

    What is the purpose of the surge arrester mounted on the roof?

    <p>Voltage surge protection</p> Signup and view all the answers

    Which part of the locomotive would you find the driver's controls?

    <p>Driver's cab</p> Signup and view all the answers

    What is the starting tractive effort provided for the locomotive?

    <p>258 kN</p> Signup and view all the answers

    What is the maximum regenerative braking effort of the locomotive?

    <p>160 kN</p> Signup and view all the answers

    What is the continuous rated power at the wheel rim in the speed range of 80-160 km/h?

    <p>4000 kW</p> Signup and view all the answers

    What is the axle arrangement of the locomotive?

    <p>Bo-Bo</p> Signup and view all the answers

    What is the continuous rated speed of the locomotive?

    <p>50 km/h</p> Signup and view all the answers

    What is the total weight of the locomotive, including potential additions?

    <p>78.0± 1% tonnes</p> Signup and view all the answers

    What is the gear ratio specified for the locomotive?

    <p>3.941</p> Signup and view all the answers

    What is the unsprung mass limit per axle of the locomotive?

    <p>2.69 tonnes</p> Signup and view all the answers

    What is the wheel diameter of a newly manufactured wheel for the locomotive?

    <p>1092 mm</p> Signup and view all the answers

    What is the maximum service speed of the locomotive?

    <p>160 km/h</p> Signup and view all the answers

    What type of drive does the WAG9 locomotive utilize?

    <p>3-phase drive</p> Signup and view all the answers

    What is the starting tractive effort of the WAG9 locomotive?

    <p>460 kN</p> Signup and view all the answers

    Which component is included for coach converters in the WAG9 locomotive's design?

    <p>Hotel load winding</p> Signup and view all the answers

    What power output is the WAG9 locomotive rated at the wheel rim in the 80-160 km/h speed range?

    <p>4500 kW</p> Signup and view all the answers

    What type of axle arrangement does the WAG9 locomotive have?

    <p>Co-Co</p> Signup and view all the answers

    Which braking system is NOT part of the WAG9 locomotive's design?

    <p>Hydraulic brake</p> Signup and view all the answers

    What component in the WAG9 locomotive uses a GTO thyristor?

    <p>Drive system</p> Signup and view all the answers

    How can the service speed potential of the WAG9 locomotive be increased?

    <p>By changing the gear ratio</p> Signup and view all the answers

    What is the nominal control circuit voltage of the system?

    <p>110 Vdc</p> Signup and view all the answers

    What is the unsprung mass per axle?

    <p>3.99 tonnes</p> Signup and view all the answers

    What is the gear ratio of the system?

    <p>5.133 (77:15)</p> Signup and view all the answers

    What is the total weight of the locomotive?

    <p>123 tonnes ± 1%</p> Signup and view all the answers

    What is the nominal diameter of a new wheel?

    <p>1092 mm</p> Signup and view all the answers

    What is the length of the loco over the buffers?

    <p>20562 mm</p> Signup and view all the answers

    What is the height of the center of gravity from the rail level?

    <p>1349 mm</p> Signup and view all the answers

    What provision is mentioned for increasing the loco weight in the future?

    <p>Ballasting to increase the weight to 135 tonnes</p> Signup and view all the answers

    What is the overall width of the locomotive?

    <p>3152 mm</p> Signup and view all the answers

    What is the bogie wheel base measurement provided?

    <p>1850 mm + 1850 mm</p> Signup and view all the answers

    Which of the following components is located in the machine room of the locomotive?

    <p>Vacuum circuit breaker</p> Signup and view all the answers

    What is the primary function of the surge arrester found on the roof equipment?

    <p>To prevent over-voltage conditions</p> Signup and view all the answers

    Which of the following is a characteristic of the layout in the driver's cab?

    <p>It includes control cubicles fitted symmetrically.</p> Signup and view all the answers

    In which section of the locomotive is the internal air filter panel located?

    <p>Roof</p> Signup and view all the answers

    What is the nominal voltage of the control circuit for the locomotive?

    <p>110 Vdc</p> Signup and view all the answers

    Which of the following is an arrangement that describes components mounted in the underframe?

    <p>Air reservoirs and batteries</p> Signup and view all the answers

    What is the unsprung mass per axle specified for the locomotive?

    <p>3.99 tonnes</p> Signup and view all the answers

    What type of layout characterizes the equipment fitted in the machine room?

    <p>Symmetrically placed on either side of the central corridor</p> Signup and view all the answers

    Which dimension represents the bogie wheel base of the locomotive?

    <p>1850 mm + 1850 mm</p> Signup and view all the answers

    Which item is typically included in the roof equipment layout?

    <p>Resistance box for harmonic filter</p> Signup and view all the answers

    What is the maximum potential weight for the locomotive after ballasting?

    <p>135 tonnes</p> Signup and view all the answers

    What is found in the underframe of the locomotive aside from the main compressor?

    <p>Circuit breaker battery</p> Signup and view all the answers

    The main components of the locomotive assembly are divided into how many parts?

    <p>Five</p> Signup and view all the answers

    What is the specified gear ratio of the locomotive?

    <p>5.133 (77:15)</p> Signup and view all the answers

    Which of the following is NOT part of the layout structure in the machine room?

    <p>Bogie</p> Signup and view all the answers

    Which measurement indicates the length of the locomotive over buffers?

    <p>20562 mm</p> Signup and view all the answers

    What is the specified height of the center of gravity from the rail level?

    <p>1349 mm</p> Signup and view all the answers

    Which feature is mentioned as a future provision for the locomotive design?

    <p>Inching control</p> Signup and view all the answers

    What is the length of the loco over head stock?

    <p>19280 mm</p> Signup and view all the answers

    What is the continuous rated tractive effort in the speed range of 0-50 km/h?

    <p>220 kN</p> Signup and view all the answers

    Which brake system is specifically included for operations in this locomotive?

    <p>Regenerative and parking brakes</p> Signup and view all the answers

    What is the gear ratio of the locomotive?

    <p>3.941:1</p> Signup and view all the answers

    What is the diameter of a half worn wheel?

    <p>1054 mm</p> Signup and view all the answers

    What is the nominal control circuit voltage of the locomotive's system?

    <p>110 Vdc</p> Signup and view all the answers

    What is the axle load of the locomotive?

    <p>19.5 tonnes</p> Signup and view all the answers

    What is the maximum service speed that the WAG9 locomotive can achieve?

    <p>100 km/h</p> Signup and view all the answers

    Which type of traction motor mounting is used in the WAG9 locomotive?

    <p>Axle hung, nose suspended</p> Signup and view all the answers

    What feature allows for the potential increase in service speed for the WAG9 locomotive?

    <p>Changing the gear ratio</p> Signup and view all the answers

    What is the continuous rated tractive effort of the WAG9 locomotive in the speed range of 0-50 km/h?

    <p>325 kN</p> Signup and view all the answers

    What is the maximum regenerative braking effort for the WAG9 locomotive within the speed range of 10-62 km/h?

    <p>260 kN</p> Signup and view all the answers

    What kind of control system is utilized in the WAG9 locomotive?

    <p>GTO thyristor and MICAS-S2 microprocessor</p> Signup and view all the answers

    What type of brake system is included for the locomotive in the WAG9 design?

    <p>Air, regenerative, and parking brakes</p> Signup and view all the answers

    What is the continuous rated power at the wheel rim for the WAG9 locomotive in the speed range of 80-160 km/h?

    <p>4500 kW</p> Signup and view all the answers

    What axle arrangement does the WAG9 locomotive utilize?

    <p>Co-Co</p> Signup and view all the answers

    What is the guaranteed performance voltage of the WAG9 locomotive?

    <p>22.5 kV</p> Signup and view all the answers

    What is the nominal control circuit voltage for this locomotive?

    <p>110 Vdc</p> Signup and view all the answers

    What is the total weight of the locomotive as specified?

    <p>123.0 ± 1% tonnes</p> Signup and view all the answers

    What is the diameter of a new wheel on the locomotive?

    <p>1092 mm</p> Signup and view all the answers

    What is the unsprung mass per axle of this locomotive?

    <p>3.99 tonnes</p> Signup and view all the answers

    What is the length of the locomotive over the buffers?

    <p>20562 mm</p> Signup and view all the answers

    What is the provision made for increasing the locomotive weight in the future?

    <p>Addition of ballast</p> Signup and view all the answers

    Which braking system is included in the WAG9 locomotive's design?

    <p>Air and regenerative braking</p> Signup and view all the answers

    What feature is provided to support multiple locomotives operating together?

    <p>Multiple unit operation</p> Signup and view all the answers

    What is the nominal voltage for the traction power used by the WAG9 locomotive?

    <p>22.5 kV</p> Signup and view all the answers

    Which equipment is primarily located in the machine room?

    <p>Main Converters</p> Signup and view all the answers

    Where are the main traction transformers mounted in the locomotive?

    <p>In the underframe</p> Signup and view all the answers

    Which component is NOT typically found in the driver's cab?

    <p>Surge Arrester</p> Signup and view all the answers

    What type of equipment is NOT mounted on the roof?

    <p>Main Compressor</p> Signup and view all the answers

    What is located symmetrically on both sides of the central corridor in the machine room?

    <p>Cooling Blowers</p> Signup and view all the answers

    Which of the following components is included in the underframe layout?

    <p>Air Reservoirs</p> Signup and view all the answers

    What is the function of the internal air filter panel installed on the roof?

    <p>Oil Cooling</p> Signup and view all the answers

    Which of these components provides current collection in the locomotive?

    <p>Pantograph</p> Signup and view all the answers

    What type of layout is characteristic of the equipment in the machine room?

    <p>Symmetrical Layout</p> Signup and view all the answers

    What is the total weight of the locomotive including additional components?

    <p>78.0± 1% tonnes</p> Signup and view all the answers

    What is the radius of the new wheel diameter for the locomotive?

    <p>546 mm</p> Signup and view all the answers

    What type of brake system does the locomotive feature?

    <p>Air brake system</p> Signup and view all the answers

    What is the mounting arrangement for the traction motor?

    <p>Fully suspended on bogie frame</p> Signup and view all the answers

    Study Notes

    Locomotive System Information

    • The locomotive is modular, with five main components: roof, driver's cab, machine room, bogie, and frame.
    • Roof equipment, such as pantograph for current collection, internal air filter, 25 KV bushing, surge arrester, earthing switch, vacuum circuit breaker, primary voltage transformer, and harmonic filter resistance box, are mounted on the primary side of the transformer.

    Locomotive Layout

    • Figure 2.1 shows the overall layout of the locomotive, including the roof, driver's cab, machine room, and bogies/frames.
    • Figure 2.2 shows a detailed layout of the roof equipment.
    • Figure 2.3 provides a detailed layout of the machine room components.
    • Figure 2.4 shows an overview of the driver's cab, including controls and indicators.

    Underframe Equipment

    • Compressors, air dryers, air reservoirs, and batteries are mounted in the underframe of the locomotive.
    • Figure 2.5 displays the underframe layout.

    Locomotive Performance Specifications

    • Starting Tractive Effort: 258 kN
    • Continuous Rated Tractive Effort (0–50 km/h): 220 kN
    • Continuous Rated Speed: 50 km/h
    • Continuous Rated Power (80–160 km/h): 4000 kW
    • Maximum Regenerative Braking Effort (10–90 km/h): 160 kN
    • Maximum Service Speed: 160 km/h
    • Total weight: 78.0± 1% tones plus max. 800 kg including harmonic filter and side buffers
    • Axle load: 19.5± 2% tones
    • Wheel Diameter: (New, half-worn, full-worn) 1092, 1054, 1016 mm
    • Gear Ratio: 3.941 (67:35:17)
    • Length of Locomotive over buffers: 18162 mm
    • Length of Locomotive over headstock: 16880 mm
    • Other dimensions including axle arrangements, brake types, and control circuits voltage are also provided.

    Other Features

    • The locomotive uses a 3-phase drive with GTO thyristors and MICAS-S2 microprocessor-based control system.
    • Future upgrades may include increasing service speed to 200 km/h by adjusting the gear ratio and additional hotel load winding.
    • The locomotive design accommodates multiple-unit operation

    Tractive and Braking Curves

    • Figures 2.6 and 4.7 display tractive effort and braking effort versus speed curves for the WAP5 locomotive. These provide visual representations of the locomotive's performance capabilities, useful for design and operation analysis.
    • Corresponding data for WAG9 locomotives are included as well, showing similar curves for tractive and braking effort at various speeds.

    Haulage Capacity Table

    • Several tables (Figure 2.8, and similar) present haulage capacity data for different locomotive types (passenger trains, express trains, and others) at various speeds and service grades. These data illustrate the maximum load capacity the locomotive can handle at different operating conditions.

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    Description

    Test your knowledge on locomotive system components and layouts. This quiz covers the modular structure of locomotives, including the roof, driver's cab, and underframe equipment. Additionally, familiarize yourself with key performance specifications and equipment types used in locomotives.

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