Fluid Dynamics Oil Filling Analysis
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Questions and Answers

What does ΔV represent in the context of oil filling quantity?

  • Change in volume per operating cycle (correct)
  • Change in dimensions due to temperature
  • The minimum allowable volume
  • Variations in oil viscosity

    • What does the term 'change-over selector' refer to in the table?

  • A device that monitors oil temperature
  • A part that regulates pressure levels
  • A mechanism for altering the flow direction of oil (correct)
  • A component that changes the voltage output

    • Which of the following temperature ranges applies to the oil specifications?

  • –15 °C to +80 °C
  • –20 °C to +90 °C
  • –30 °C to +100 °C (correct)
  • 0 °C to +50 °C

    • According to the notes, what does VDE 0111, part 1 specify?

    <p>The insulation ratings for equipment</p> Signup and view all the answers

    What must be adhered to when using the coarse tapping arrangement in the (-) position with impulse voltage?

    <p>Permissible withstand voltage 'a'</p> Signup and view all the answers

    In the context of the survey designs mentioned, which aspect is NOT incorporated in the analysis?

    <p>Type of switch mechanism</p> Signup and view all the answers

    What is the influence of the change-over selector position on the permissible voltages for delta connection tap-changers?

    <p>Permissible voltages vary depending on the position of both selectors</p> Signup and view all the answers

    What is the significance of the tap selector terminal contacts in the connection diagrams?

    <p>To ensure compliance with MR standards</p> Signup and view all the answers

    Which of the following describes the relationship of voltage between different phase contacts in the (-) position?

    <p>Voltage 'b' applies between tap selector contacts of different phases</p> Signup and view all the answers

    In what scenario is it critical to monitor the withstand voltage 'a'?

    <p>Between tap selector contacts at the end of a tapped winding</p> Signup and view all the answers

    What is one of the main purposes of observing the permissible withstand voltage 'a' in the coarse tapping arrangement?

    <p>To prevent electrical arcing and equipment damage</p> Signup and view all the answers

    Which of the following statements about the change-over selector and tap selector is true?

    <p>They have a direct correlation affecting permissible voltages</p> Signup and view all the answers

    Which installation drawing corresponds to the on-load tap-changer OILTAP® V 200?

    <p>893945</p> Signup and view all the answers

    What is the identification number for the horizontal drive shaft?

    <p>893772</p> Signup and view all the answers

    Which component features a bell-type tank?

    <p>On-load tap-changer head, bell-type tank</p> Signup and view all the answers

    Which company is responsible for the data and changes mentioned in the installation documents?

    <p>Reinhausen GmbH</p> Signup and view all the answers

    What is the purpose of the document number TD 82/03 EN?

    <p>Identification of printed documentation</p> Signup and view all the answers

    What is the correct phone number format provided in the contact information?

    <p>+49 941 40 90-0</p> Signup and view all the answers

    What defines the voltage stress experiences in tap windings?

    <p>The positioning of the change-over selector contacts</p> Signup and view all the answers

    Which arrangement is specifically mentioned for the change-over selector's coarse tapping?

    <p>Between different phases in the (+) position</p> Signup and view all the answers

    What does c21 represent according to the coarse tap selector description?

    <p>Selector contacts of different phases</p> Signup and view all the answers

    What is characteristic of the tap-changers for delta connections?

    <p>Different permissible values apply for each phase</p> Signup and view all the answers

    What voltage levels are indicated in the installation drawings for the on-load tap-changer?

    <p>40 kV and 123 kV</p> Signup and view all the answers

    What does c22 indicate with the coarse tap selector in the (-) position?

    <p>Change-over contacts of different phases</p> Signup and view all the answers

    For which device types are the identification numbers given?

    <p>On-load tap-changer OILTAP® V III 200 Y and OILTAP® V I 350</p> Signup and view all the answers

    What does the term c2 describe in the context of the coarse tap selector?

    <p>Connections between change-over selector contacts of different phases</p> Signup and view all the answers

    What is the primary focus of the provided dimension drawings?

    <p>Physical dimensions for installation</p> Signup and view all the answers

    What does c1 focus on regarding the connections?

    <p>Connections between selected change-over contacts and ground</p> Signup and view all the answers

    What is the maximum total operating voltage allowed for a tap-changer with 10 contacts?

    <p>13,500 V</p> Signup and view all the answers

    Which factor has the least influence on the actual contact life of an arcing tap-changer?

    <p>Type of insulation</p> Signup and view all the answers

    How many contacts are indicated to have a total rated step voltage limitation of 13,200 V?

    <p>12 contacts</p> Signup and view all the answers

    Under what condition is the rated step voltage considered constant across the entire setting range?

    <p>When the rated step voltage is constant</p> Signup and view all the answers

    Which of the following statements is true regarding the inspection regulations for tap-changers?

    <p>They must be strictly observed.</p> Signup and view all the answers

    What factor is explicitly mentioned as not applicable to constant current service?

    <p>Actual contact life estimations</p> Signup and view all the answers

    The permissible withstand voltage 'a' applies only to the connections of different phases in a coarse tapping arrangement.

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

    In the (-) position of the change-over selector, the voltage withstand between tap selector contacts of the same phase is crucial.

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

    The change-over selector position does not affect the permissible voltages for delta connection tap-changers.

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

    Impulse voltage testing is not necessary for the coarse tapping arrangement in the (+) position.

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

    The voltages between contacts of different phases must always adhere to the same standard as those within the same phase.

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

    The connections at the end of tapped windings belong to the same phase as the tap selector contact they relate to.

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

    B1 represents the withstand voltage from unselected contacts of different phases.

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

    F1 is the voltage between unselected tap selector contacts and ground.

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

    B2 indicates the voltage from the selected contact of one phase to the unselected contacts of the same phase.

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

    B3 defines the withstand voltage between selected contacts of different phases.

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

    The change-over selector does not influence the design of voltage withstand specifications.

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

    F indicates the withstand voltage to ground in designs without change-over selectors.

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

    The on-load tap-changer V III 200 Y has a maximum of 4 poles.

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

    Dimensional drawings and connection diagrams must remain unchanged regardless of the transformer specifications.

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

    The transformer manufacturer is responsible for the selection of the on-load tap-changer properties.

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

    The technical data provided can be used independently without any reference to the general section.

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

    The V III 350 D on-load tap-changer can only be applied at the neutral point of the winding.

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

    Drawings submitted during the bidding process are not binding.

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

    The number of poles for the V I 350 tap-changer configuration is 2.

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

    Connections involving leakage inductance are part of the important information referenced in the general section.

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

    The AC withstand voltage for 10 contacts at a 50 Hz frequency is 70 kV.

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

    The rated lightning impulse withstand voltage for Um = 123 kV is 620 kV.

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

    For the 14 contacts configuration, the 50 Hz AC withstand voltage is 70 kV.

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

    The highest rated withstand voltage for a 50 Hz frequency is for Um = 123 kV, and it is 180 kV.

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

    The impulse withstand voltage of 350 kV is associated with the Um of 76 kV.

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

    For Um = 40 kV, the 50 Hz AC withstand voltage is 90 kV.

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

    The rated withstand voltage for 12 contacts at a 50 Hz frequency is consistently 50 kV.

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

    Um = 123 kV, with 1.2/50 μs impulse, achieves a withstand voltage of 350 kV for all configurations.

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

    For the 50 Hz withstand voltage of Um = 76 kV, the value is 180 kV.

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

    The rated withstand voltage of 490 kV can be sustained by the Um = 76 kV configuration.

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

    The OILTAP® V can have a horizontal drive shaft in both standard and special design.

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

    The installation drawing number for the OILTAP® V 350 is 8939456E.

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

    Tie-in resistors for the OILTAP® V III 200 Y/D are attached to the bottom of the unit.

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

    All dimension drawings for OILTAP® V include details about a flange for pressure relief valves.

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

    The OILTAP® V models presented range between 40 to 123 and 40 to 76.

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

    The drawing number 8946793E represents a design without a flange for any purpose.

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

    OILTAP® V's overhead driving components are always positioned on the left side.

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

    The directory of additional drawings features the OILTAP® V 200 model details.

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

    The lifting device referenced in the OILTAP® V is only suitable for the V I 350 configuration.

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

    The drawing number 8937773E is associated with the OILTAP® V III 350 D model.

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

    Study Notes

    General Information

    • The average volume of oil filling in various configurations is provided, measuring in dm³.
    • Temperature range for oil temperature is specified from -30 °C to +100 °C.

    Technical Data

    • The rated step voltage is restricted based on dielectric strength of tap-changer contacts.
    • Total operating voltages for tap-changer configurations:
      • 10 contacts: Total Ui = 13,500 V
      • 12 contacts: Total Ui = 13,200 V
      • 14 contacts: Total Ui = 13,000 V
    • Mean expected contact life of arcing tap-changer contacts depends on the relative load (Iu/Ium) but varies due to multiple influencing factors.

    Dimensional and Connection Diagrams

    • Basic connection diagrams illustrate tap selector terminal contacts as per MR standards.
    • Dimension drawings are available upon request, reflecting precise configurations.

    Voltage Stress and Insulation

    • Insulation properties must meet specific standards when stressed with impulse voltage.
    • Various permissible voltage limits (designated as 'a', 'b', 'c') apply depending on the configuration and phase connections.

    OILTAP® Models

    • On-load tap-changer models include OILTAP® V III in various capacities (200 Y, 200 D, 350 Y, 350 D) with and without change-over selectors.
    • Specific installation drawings are available for different models and configurations.

    Additional Notes

    • Data may differ from actual delivered devices; changes can occur without notice.

    Technical Data Overview

    • Technical data intended for transformer designers and calculators; specific to on-load tap-changers.
    • Key to verify data with general section (TD 61) containing essential information on connections, inductance, and current division.
    • Dimensional drawings and connection diagrams not guaranteed to remain unchanged; drawings presented during bidding and ordering are definitive.

    On-load Tap-changer Specifications

    • Models include:
      • V III 200 Y
      • V III 200 D
      • V III 350 Y
      • V III 350 D
      • V I 350
    • Each model features 3 poles except V I 350, which has 1 pole; application varies with winding configurations.

    Insulation Distances and Voltage Ratings

    • Rated insulation distances and withstand voltages detailed for various configurations and voltages:
      • Um = 40 kV, 76 kV, 123 kV/76
    • Key voltage withstand ratings include:
      • kV 1.2|50 µs ratings varying from 200 to 620 depending on configuration.
      • kV 50 Hz 1 min ratings range between 70 and 180.

    Contact Configurations

    • Different configurations of contacts affect voltage withstand:
      • 10, 12, and 14 contacts each with specific rated withstand voltages.
      • Current division and leakage considerations are critical based on mounts and specifications.

    Summary of Voltage Ratings

    • Table outlines rated withstand voltages for insulation gaps:
      • Example:
        • 230 kV for b1 contacts at Um = 40 kV.
        • 350 kV for various configurations at Um = 123 kV.

    Change-over Selector Guidelines

    • Change-over selector impact on permissible voltages between contacts clarifies binding requirements.
    • Details include transition stress considerations for coarse and fine tap windings.

    Design Notes

    • Product customization includes horizontal drive shafts, tie-in resistors, and pressure relief valve options.
    • Installation drawings provided for various models highlight the design flexibility intended for specific transformer configurations.

    Additional Documentation

    • Comprehensive directory of additional drawings supports installation and application specifics for on-load tap-changers.
    • Emphasis on technical consistency and validation for reliability in utility applications and design integrations.

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    Description

    This quiz examines fluid dynamics related to oil filling quantities and volume changes in a diverter switch system. Participants will analyze various scenarios involving different volume changes represented in dm3. Prepare to understand the relationships between flow, volume, and system efficiencies.

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