AC-DC EMU Maintenance Manual Quiz
81 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which component is essential for the operation of the traction control unit?

  • Battery volt meter
  • AC-DC converter (correct)
  • MCB
  • Foot operated valve

    • What is the primary function of the brake electronics control unit (BECU)?

  • To manage the traction current
  • To control the main switch
  • To regulate the brake system (correct)
  • To monitor the emergency brake

    • What does the 'Panto is Up' indication signify on the shunting desk control panel?

  • The parking brake is engaged
  • The power supply is offline
  • The pantograph is correctly positioned (correct)
  • The emergency brake is activated

    • Which of the following is NOT found in the electronic cabinet?

    <p>Shunting desk control panel</p> Signup and view all the answers

    Which function does the foot-operated valve provide?

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

    What does the 'Main Switch On / Off' control allow the operator to do?

    <p>Enable or disable the entire electrical system</p> Signup and view all the answers

    Which device is responsible for converting alternating current to direct current in the HT compartment?

    <p>AC-DC converter</p> Signup and view all the answers

    What is the operating voltage of the secondary windings connected to the IGBT based modules?

    <p>3 Ø, 415 V AC</p> Signup and view all the answers

    Which braking system is utilized in the basic unit of the vehicle?

    <p>Compressed-air brake &amp; electronic brake unit</p> Signup and view all the answers

    What happens if the key valve on the rear panel of the shunting cab is closed?

    <p>The air supply to the lifting cylinders is blocked</p> Signup and view all the answers

    What is the maximum start effort for the basic unit?

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

    Which supply is used to provide redundancy lines to adjacent units?

    <p>1Ø, 110V AC supply</p> Signup and view all the answers

    What is the primary purpose of the Earth Fault Detector in the circuit of the 4-QC module?

    <p>To protect against Earth Faults on the AC side</p> Signup and view all the answers

    How does the Line Filter function within the DC link capacitor?

    <p>It suppresses harmonics or ripples in the DC supply</p> Signup and view all the answers

    What type of output does one secondary of the Auxiliary Converter provide for the main compressor?

    <p>Three Phase 415V AC</p> Signup and view all the answers

    What is the function of the Pantograph (Type Am-1882)?

    <p>To collect H.T. Supply from the OHE contact wire</p> Signup and view all the answers

    What is the significance of the Surge Arrestor mounted on the motor coach?

    <p>It protects the coach from lightning strikes</p> Signup and view all the answers

    For what purpose is the DC 110V output from the Auxiliary Converter primarily used?

    <p>To charge batteries and for control supply</p> Signup and view all the answers

    Which statement correctly describes the function of the Line Voltage Transformer?

    <p>It provides line voltage supply to the motor coach</p> Signup and view all the answers

    What component is utilized to provide redundancy lines of supply in the motor coach?

    <p>AUX Converter Secondary for 110V AC</p> Signup and view all the answers

    Which type of output does the Auxiliary Converter provide that is specifically for powering lights and fans?

    <p>Single Phase 110V AC</p> Signup and view all the answers

    What is the primary function of the line current transformer?

    <p>To sense current and provide over current protection</p> Signup and view all the answers

    What position does the change over switch default to?

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

    Which device is designed to break the power circuit under overload conditions?

    <p>High Voltage AC Circuit Breaker</p> Signup and view all the answers

    How many traction motors are included in one motor coach?

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

    What does the AC Earthing Switch connect to during the off position of the VCB?

    <p>Earth on the primary side of the traction transformer</p> Signup and view all the answers

    Which of the following devices is specifically for DC operation?

    <p>High Speed DC Circuit Breaker</p> Signup and view all the answers

    What is the main purpose of surge arrestors on the motor coach?

    <p>To arrest voltage surges during operation</p> Signup and view all the answers

    What nominal rating is designed for the traction transformer?

    <p>1250 kVA</p> Signup and view all the answers

    Which part of the system does the DC Earthing Switch connect to during the off position of the HSCB?

    <p>Earth DC link</p> Signup and view all the answers

    How many positions does the change over switch have?

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

    What is the nominal current available on the secondary side at 855 Volt?

    <p>731 A</p> Signup and view all the answers

    Which of the following is NOT listed as under frame equipment in the non-driving trailer coach?

    <p>Ventilation fans</p> Signup and view all the answers

    What type of equipment is a transducer classified as?

    <p>Converting equipment</p> Signup and view all the answers

    What is the purpose of the potential transformer (PT) in the high tension power circuit?

    <p>To detect AC voltage</p> Signup and view all the answers

    Which sensor is used to monitor oil levels in the Siemens AC-DC EMU?

    <p>Oil level sensor</p> Signup and view all the answers

    Which of the following components would typically be found in the roof equipment of a trailer coach?

    <p>Ventilation fans</p> Signup and view all the answers

    What type of catenary voltage does the pantograph receive?

    <p>25 kV AC or 1500 V DC</p> Signup and view all the answers

    What equipment in a non-driving trailer coach is used for parking brakes?

    <p>Parking brake equipment</p> Signup and view all the answers

    Which rotary switch is associated with the passenger area of the non-driving trailer coach?

    <p>SIBAS KLIP Station (41)</p> Signup and view all the answers

    What does the detection of AC or DC voltage in the power circuit utilize?

    <p>Voltage sensing devices</p> Signup and view all the answers

    What triggers the automatic application of brakes in rescue drive mode?

    <p>Speed below 5 km/h.</p> Signup and view all the answers

    How is the auxiliary equipment powered in the EMU system?

    <p>Three-phase auxiliary inverter.</p> Signup and view all the answers

    Which coach type in the end basic unit does not support driving?

    <p>Trailer Coach (TC).</p> Signup and view all the answers

    What type of inverter voltage is supplied for the auxiliary air compressor?

    <p>110 Volt DC.</p> Signup and view all the answers

    Which component is primarily responsible for driving the EMU using driver commands?

    <p>Motor Coach (MC).</p> Signup and view all the answers

    What distinguishes the Non Driving Trailer Coach (NDTC) from the Driving Trailer Coach (DTC)?

    <p>DTC contains propulsion equipment; NDTC does not.</p> Signup and view all the answers

    What fixed frequency does the inverter for auxiliary equipment supply?

    <p>50Hz.</p> Signup and view all the answers

    What role does the Emergency OFF function serve in the auxiliary tell-tale lamps?

    <p>Signals the application of the emergency brake</p> Signup and view all the answers

    What is the nominal current at the secondary side when the secondary voltage is 855 Volt?

    <p>731 A</p> Signup and view all the answers

    Which gauge is essential in monitoring the performance of brake systems?

    <p>MR/BP/Duplex Gauge</p> Signup and view all the answers

    In the Man Machine Interface, which function does the Cursor Right control perform?

    <p>Moves the selection to the right</p> Signup and view all the answers

    Which of the following accurately describes a type of transducer used in Siemens AC-DC EMU?

    <p>Voltage transducer</p> Signup and view all the answers

    What is the primary purpose of the Tail Light On / Off control in the guard panel?

    <p>To signal other trains during night operations</p> Signup and view all the answers

    Which component is part of the under frame equipment in a non-driving trailer coach?

    <p>Combined brake unit</p> Signup and view all the answers

    What is sensed through the voltage sensing device for AC voltage detection?

    <p>Potential transformers</p> Signup and view all the answers

    Which function does the Cab emergency light provide to the driver?

    <p>Lighting during low-visibility evacuations</p> Signup and view all the answers

    Which of the following controls is directly associated with parking brake operations?

    <p>Parking Brake Apply</p> Signup and view all the answers

    Which of the following is NOT part of the roof equipment in a trailer coach?

    <p>Battery box</p> Signup and view all the answers

    What does the function of the train light at reduced intensity (50%) achieve?

    <p>Reduces energy consumption</p> Signup and view all the answers

    What does the detection of DC voltage utilize according to the provided information?

    <p>In-series resistors</p> Signup and view all the answers

    Which component in the under frame equipment provides mechanical weight transfer?

    <p>Mechanical weight transfer equipment</p> Signup and view all the answers

    What does the Cab spot light for the driver primarily provide?

    <p>Focused illumination for controls</p> Signup and view all the answers

    What does the Legends of Symbols feature in the Man Machine Interface enable?

    <p>Provide a key to understanding interface indicators</p> Signup and view all the answers

    What type of switch is associated with the passenger area in the trailer coach?

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

    Which sensor is specifically mentioned for monitoring oil flow in the Siemens AC-DC EMU?

    <p>Oil flow sensor</p> Signup and view all the answers

    What is the supply voltage received by the pantograph?

    <p>1500 V DC</p> Signup and view all the answers

    What must be done before attempting to raise the pantograph?

    <p>Confirm that control voltage of 110 V DC is available</p> Signup and view all the answers

    What happens automatically when the pantograph is lowered with the valve closed?

    <p>The air supply line to the lifting cylinders is bled</p> Signup and view all the answers

    In case of a fault, how can the pantograph be lowered?

    <p>Via the control unit</p> Signup and view all the answers

    What does the rotary switch control in relation to the pantograph?

    <p>The raising and lowering of the pantograph</p> Signup and view all the answers

    What action is taken if there is not a sufficient supply of compressed air to raise the pantograph?

    <p>The auxiliary air compressor generates compressed air</p> Signup and view all the answers

    What is the purpose of the pre-charging AC contactor in the motor coach?

    <p>To reduce the initial inrush of charging current for the DC link.</p> Signup and view all the answers

    Which component is specifically used to limit the surge voltage in the motor coach?

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

    What is one function of the traction converter cubical?

    <p>To contain the traction control unit and its modules.</p> Signup and view all the answers

    Which module is part of the traction converter cubical that manages the voltage output?

    <p>Pulse Width Modulated Inverter</p> Signup and view all the answers

    What role does the pre-charging DC contactor serve in a motor coach's electrical system?

    <p>To connect equipment to the power supply under DC conditions.</p> Signup and view all the answers

    In the context of motor coach equipment, what does the Traction Transformer specifically do?

    <p>It transforms high voltage AC into usable lower voltage AC.</p> Signup and view all the answers

    Which equipment is primarily responsible for the air suspension system in a motor coach?

    <p>Air suspension equipment</p> Signup and view all the answers

    Which type of equipment is essential for ensuring the temperature control in the passenger area of a motor coach?

    <p>Ventilation fans</p> Signup and view all the answers

    What is the function of different rotary switches found in the passenger area of the motor coach?

    <p>To regulate power distribution for lights and ventilation.</p> Signup and view all the answers

    Study Notes

    General Description

    • The AC-DC EMU is a newly designed train using IGBT control technology.
    • It's designed for DC and AC territory, specifically in the Mumbai suburban area.
    • The vehicle has a driver-friendly diagnostic display (MMI) unit.
    • The maintenance manual details the maintenance and overhaul procedures for the electrical and mechanical equipment of Siemens Rake.

    Abbreviations

    • ACU: Auxiliary Control Unit
    • ADC/COS: AC/DC Changeover Switch
    • AFB: Automatic Traction/Brake Control (Cruise Control)
    • AM: Shut Off Valve (Parking Brake Circuit)
    • AWS: Auxiliary Warning System
    • BCU: Brake Control Unit
    • BW: Braking Resistor
    • CCU: Central Control Unit
    • DCS: Driver's control switch (Master key)
    • DM: Diagnostic Message
    • DTC: Driving Trailer Coach
    • EBU: End Basic Unit
    • EBL: Emergency Brake Loop
    • ES: Electronic Cabinet
    • FML: Traction Motor Fan
    • GTO: Gate Turn Off Thyristor
    • HB: Main Air Compressor
    • HBL: Main MR Pipe
    • HL: Main Brake Pipe
    • HSCB: High Speed Circuit Breaker
    • HTC: High Tension Compartment
    • IGBT: Insulated Gate Bi-Polar Transistor
    • MBU: Middle Basic Unit
    • MMI: Man Machine Interface
    • MPS: Motor protective switch
    • MS: Main Switch

    Three-Phase Technology

    • The vehicle uses three-phase asynchronous motors for smooth acceleration.
    • This design reduces weight, improves reliability, and provides good starting properties over a wider speed range.
    • Regenerative braking reduces wear and improves energy conservation.

    Control Technology

    • Two Central Control Units (CCUs) are in the driver's cab, controlling the entire train and the display.
    • Vehicles are connected via a redundant MVB bus.
    • In rescue drive mode, the display is off, and the auxiliary tell-tale lamps are on.
    • All switches, buttons, and devices are connected to a KLIP station.

    Display Support

    • The MMI (Man-Machine Interface) displays important train functions with colored icons for error detection.
    • The display guides the driver with remedies for error messages.
    • Automatic vigilance is implemented ensuring the automatic application of brakes if the driver disengages the vigilance monitoring button while driving above 5km/h.

    Auxiliary Equipment

    • Three-phase auxiliary equipment are supplied by an auxiliary inverter with voltages for:
      • Fans and main air compressor
      • Passenger compartment fans and lighting
      • Auxiliary air compressors, plugs, and emergency lighting.
    • Auxiliary equipment operates at a fixed frequency (50 Hz) and voltage.

    Unit & Rake Formation of EMU

    • The EMU has two basic units: end basic unit and middle basic unit.
    • End basic unit consists of a Motor Coach, Driving Trailer Coach, and Trailer Coach.
    • Middle basic unit consists of a Motor Coach, Non Driving Trailer Coach, and Trailer Coach.
    • Various train formations are possible, including 9, 12, and 15 car rakes.

    Major Equipment of DTC (Driving Trailer Coach)

    • The Driving Cab includes various controls, such as speedometers, signal lights, pressure panels, switches, and controllers for functions like brakes and master controllers.

    Driving Desk

    • The Driving Desk includes a brake controller, master controller, various push buttons, rotary switches, and indicators.
    • Important components include TMS (Train Management System), foot-operated hooter valves, and AWS indication panel.

    Guard's Desk

    • The Guard's Desk includes important components such as a brake pipe pressure gauge and panels for push buttons.

    Electronics Cabinet DTC

    • The Electronics Cabinet DTC levels 1 and 2 contain various isolating units, battery, brake release loops, and indicating systems.

    Major Equipment of Motor Coach

    • The Shunting Cab includes a brake controller, master controller, shunting desk, and various controls.
    • Electronics/Cabinet components relate to the Brake, Electronics Control Unit (BECU)

    HT Compartment

    • The HT compartment contains traction converters and associated components, such as AC-DC converters, PWM inverter modules, and control units.

    Transducers and Sensors

    • Various transducers like voltage, current, pressure, speed, and oil flow sensors convert physical quantities to electrical signals.
    • These signals aid in control system functions.

    Electrical Equipment in Motor Coach

    • Pre-charging AC and DC contactors, regulating current and voltage for better machine function for both AC and DC systems.
    • The DC link capacitor is initially charged through a pre-charging resistor (during AC catenary operation).

    Pantograph Control

    • The pantograph is raised and lowered using a compressed-air system and a rotary switch in the driver's cab
    • The system raises/lowers the pantograph automatically or manually.

    Main Circuit-Breaker Control

    • The AC and DC main circuit breakers are located on the roof, controlled electronically by the TCU, ensuring voltage and safety functions.

    Earthing

    • The procedure for connecting basic units to earth, personal protection instructions for entering and exiting the HTC (High Tension Compartment), keys that manage each process, and the process steps are listed.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Maintenance Manual AC DC EMU (Siemens) PDF

    Description

    Test your knowledge on the maintenance and operational procedures of the newly designed AC-DC EMU trains, specifically tailored for the Mumbai suburban area. This quiz covers IGBT control technology and various essential abbreviations related to the train's systems. Perfect for anyone involved in railway engineering or maintenance!

    More Like This

    AC vs DC Electricity Basics
    10 questions

    AC vs DC Electricity Basics

    HumbleApostrophe avatar
    HumbleApostrophe
    Bridge Rectifier and AC-DC Conversion
    10 questions

    Bridge Rectifier and AC-DC Conversion

    MesmerizedWalrus avatar
    MesmerizedWalrus
    Hybrid AC/DC Microgrids Overview
    10 questions

    Hybrid AC/DC Microgrids Overview

    PreciseWilliamsite3546 avatar
    PreciseWilliamsite3546
    AC vs DC: Understanding Current Types
    16 questions

    AC vs DC: Understanding Current Types

    TranquilKansasCity avatar
    TranquilKansasCity
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser