Safety Standards for Operation
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Questions and Answers

What is a critical duty of care for personnel responsible for operating the product?

  • Perform modifications without consultation
  • Ensure all warning and hazard notices are adhered to (correct)
  • Allow untrained staff to operate the product
  • Ignore environmental impacts during operation
  • Which personnel qualification is necessary for operating the product effectively?

  • Training in the installation and assembly of electrical energy systems (correct)
  • Experience in non-technical fields
  • General knowledge about electrical systems
  • Familiarity with various unrelated electrical devices
  • What can unauthorized modifications to the product lead to?

  • Personal injuries and operational faults (correct)
  • Enhanced product efficiency
  • Increased product lifespan
  • Improved safety standards
  • When should personnel be instructed about operational safety and hazard communication?

    <p>Regularly, as part of ongoing training</p> Signup and view all the answers

    What type of environments should the product be operated in?

    <p>Areas free from flammable or explosive materials</p> Signup and view all the answers

    What consequence might untrained personnel experience while operating the product?

    <p>Potential accidents or disruptions</p> Signup and view all the answers

    What is a significant risk associated with operating in areas prone to hazardous materials?

    <p>Risk of explosion or fire</p> Signup and view all the answers

    What is the primary focus of the operator's duty of care?

    <p>To prevent accidents and uphold safety standards</p> Signup and view all the answers

    What is the primary reason for using trained and appointed persons for selecting sling gear?

    <p>They mitigate the risk of injury or damage.</p> Signup and view all the answers

    What should be avoided to prevent possible damage during transportation of goods?

    <p>Dropping the crate.</p> Signup and view all the answers

    What load capacity should lifting gear and transport means have to ensure safety during operations?

    <p>More than 500 kg.</p> Signup and view all the answers

    Which of the following is NOT a precautionary measure when handling shipments?

    <p>Walk under hanging loads.</p> Signup and view all the answers

    What type of stress should be expected in addition to oscillation and shock stress during transport?

    <p>Jolt stress.</p> Signup and view all the answers

    In the event of a crate tipping over, which outcome can be expected regardless of the crate's weight?

    <p>Damage must be expected.</p> Signup and view all the answers

    What is a critical consideration before accepting a shipment?

    <p>Completeness based on the delivery slip.</p> Signup and view all the answers

    Which factor is NOT related to preventing damage during product transport?

    <p>Maintaining an appropriate temperature.</p> Signup and view all the answers

    Which pictogram indicates a warning of danger due to combustible substances?

    <p>Pictogram for combustible substances</p> Signup and view all the answers

    What is the primary purpose of signal words in warning notices?

    <p>To simplify and improve understanding of dangers</p> Signup and view all the answers

    Which of the following statements accurately reflects general safety information?

    <p>Reading the technical file helps in the proper handling and installation of the product.</p> Signup and view all the answers

    What is the function of the pictograms found in warning notices?

    <p>To communicate hazards visually and effectively</p> Signup and view all the answers

    Which action is recommended for users to ensure safety when working with the product?

    <p>Familiarize oneself with the operational procedures through careful reading</p> Signup and view all the answers

    What does the word 'warning' signify in the context of warning notices?

    <p>A specific action that must be avoided to prevent danger</p> Signup and view all the answers

    Which of the following is NOT a type of warning pictogram mentioned?

    <p>Warning of hazardous radiation</p> Signup and view all the answers

    Why is it important to pay particular attention to the safety information section in the technical file?

    <p>It provides necessary instructions for safe installation and operation.</p> Signup and view all the answers

    What is the first step to verify that the oil filter unit is functioning correctly after installing the filter cartridge?

    <p>Supply the motor-drive unit and control cabinet with voltage</p> Signup and view all the answers

    Which pressure reading indicates that a filter change is required in the oil filter unit?

    <p>3.6 bar</p> Signup and view all the answers

    How long should the oil filter unit be left running after switching the on-load tap-changer?

    <p>10 minutes</p> Signup and view all the answers

    What action should be taken if the pressure in the oil filter unit does not increase?

    <p>Check the phase sequence of the motor voltage</p> Signup and view all the answers

    What does setting rotary switch S30 to OFF accomplish in the operation of the oil filter unit?

    <p>It stops the oil filter unit from conveying insulating fluid</p> Signup and view all the answers

    What is the purpose of the stop-cock located on the return flange during oil filter unit operation?

    <p>To control the flow of oil out of the unit</p> Signup and view all the answers

    What should be checked regarding the motor voltage if the oil filter unit fails to start?

    <p>The motor phase sequence</p> Signup and view all the answers

    After completing the commissioning process, what is the final action required regarding the power supply?

    <p>Disconnect the motor-drive unit and control cabinet from the supply voltage</p> Signup and view all the answers

    What is the purpose of venting the on-load tap-changer head via the air-vent valve E1?

    <p>To relieve pressure and prevent damage</p> Signup and view all the answers

    When inspecting and changing the filter cartridge, which step is crucial to avoid danger of explosion?

    <p>Maintaining insulating fluid level between minimum and maximum marks</p> Signup and view all the answers

    Which action should be taken immediately after filling the oil filter unit with insulating fluid?

    <p>Perform a function test</p> Signup and view all the answers

    What is the required tightening torque for the bolts when attaching the cover of the oil filter unit?

    <p>30 Nm</p> Signup and view all the answers

    What is the primary function of the vent screw located on the return flange?

    <p>To allow air to escape for reducing pressure</p> Signup and view all the answers

    Which component must be affixed to the stop-cock for proper function after the filter cartridge has been replaced?

    <p>The return flange</p> Signup and view all the answers

    What potential issue should be watched for when managing insulating fluid in the oil conservator?

    <p>Insufficient fluid can lead to overheating</p> Signup and view all the answers

    Which of the following steps must be performed last during the oil filter unit maintenance?

    <p>Commission the transformer</p> Signup and view all the answers

    What is the first step in the operation of the on-load tap-changer maintenance procedure?

    <p>Switch the on-load tap-changer via the motor-drive unit</p> Signup and view all the answers

    How long should the oil filter unit be allowed to run after startup?

    <p>30 or 60 minutes</p> Signup and view all the answers

    What should be done 30 minutes after switching off the oil filter unit?

    <p>Remove the securing element and screw cap from the drain valve</p> Signup and view all the answers

    What is a crucial warning to be mindful of when handling the insulating fluid in the oil compartment?

    <p>Insufficient insulating fluid can cause damage to the on-load tap-changer</p> Signup and view all the answers

    What check should be performed after draining the insulating fluid?

    <p>Test the dielectric strength and water content of the insulating fluid</p> Signup and view all the answers

    What must be done after opening the drain valve to prevent damage?

    <p>Affix a warning sign to the drain valve</p> Signup and view all the answers

    Which aspect is monitored during the inspection of the oil filter unit?

    <p>Seal tightness and insulating fluid condition</p> Signup and view all the answers

    What is the purpose of commissioning the transformer as outlined in the maintenance process?

    <p>To verify the installation and functionality of the tap-changer</p> Signup and view all the answers

    Study Notes

    Shipping and Handling Precautions

    • Protect against moisture during transport to prevent damage.
    • Attach lifting gear securely at the designated center of mass for safe handling.

    Transportation Safeguards

    • Risk of severe injury or death from improper handling and tipping loads.
    • Only trained personnel should select sling gear and secure loads.
    • Means of transport should have a carrying capacity greater than 500 kg to ensure safety.

    Damage Prevention During Transport

    • Expect oscillation, shock stress, and jolts that can lead to damage.
    • Avoid dropping, tipping, or colliding with products during transit.
    • Check all shipments for completeness and external damage before acceptance.

    Warning Signals and Pictograms

    • Various pictograms indicate dangers associated with the equipment, such as tipping hazards and electrical voltage risks.

    Safety Guidelines

    • Detailed instructions for safe installation, connection, commissioning, and monitoring are provided in the technical file.
    • Specific focus required on explosive risks; do not use in potentially explosive atmospheres.
    • Unauthorized modifications to the product can result in personal injury and equipment failure.

    Personnel Qualifications

    • Intended for use by qualified personnel familiar with electrical energy systems.
    • Personnel must be adequately trained in installation, assembly, commissioning, and operation of the product.

    Operator Responsibilities

    • Ensure compliance with all safety and hazard warnings.
    • Regularly instruct personnel on operational safety and safety instructions to prevent accidents and environmental harm.

    Commissioning of the Oil Filter Unit

    • Ensure voltage supply to the motor-drive unit and control cabinet before starting.
    • Use miniature circuit breakers and the motor protective switch to activate the system.
    • Set rotary switch S30 to ON to initiate the oil filter unit startup.
    • Close the stop-cock on the return flange to build pressure, which should rise.
    • Verify motor phase sequence (U-V-W, clockwise) for proper startup; a deviation will prevent motor activation.
    • A pressure reading of 3.6 bar/0.36 MPa signals a filter change; close rotary switch S30 once maximum pressure of 4.2 bar/0.42 MPa is reached.
    • Open the stop-cock at the return flange and switch the on-load tap-changer via the motor-drive unit.
    • Run the oil filter unit for a 10-minute interval.
    • Disconnect power supply before maintenance procedures.

    Filter Cartridge Installation

    • Securely attach a new filter cartridge with a new O-ring into the oil filter unit.
    • Automatically center the filter cartridge when closing the cover.
    • Fill the oil filter unit with insulating fluid.
    • Fasten the cover with new O-ring using 6 M10 bolts (30 Nm torque) and 2 lifting eye bolts (30 Nm torque).
    • Connect the return flange to the stop-cock and open stop-cocks on both feed and return flanges.

    Inspection and Maintenance Procedures

    • Vent the oil filter unit using the vent screw on the return flange.
    • Release air from the on-load tap-changer head via air-vent valve E1.
    • Vent the feed pipe connection on the on-load tap-changer head.
    • Function test is essential post-maintenance to ensure proper operation.
    • Maintain insulating fluid levels within the "Minimum" and "Maximum" marks to prevent explosion hazards.
    • Commission the transformer and switch the on-load tap-changer through the motor-drive unit.
    • Operate the oil filter unit for a minimum of 30 or 60 minutes, depending on pump settings.
    • After 30 minutes of shutdown, drain insulating fluid by carefully opening the drain valve.
    • Close the drain valve after fluid removal, securing it with appropriate warnings.
    • Regularly check dielectric strength and water content of the insulating fluid to ensure safe operations.

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    Description

    This quiz focuses on the critical safety protocols for operating products that may pose a risk of explosion or fire due to flammable substances. It emphasizes the importance of adhering strictly to manufacturer guidelines and avoiding unauthorized modifications to ensure personal and material safety.

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