Safety Guidelines for Technical Products
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Safety Guidelines for Technical Products

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Questions and Answers

What triggers the protective relay to trip the circuit breakers?

  • Insufficient speed of flow from the tap-changer
  • Specified speed of flow being exceeded (correct)
  • Excess gas accumulation in the relay
  • Rated switching capacity of the diverter switch

    • Which of the following statements is true regarding the protective relay?

  • It needs to be bled after filling the transformer
  • It can cause the transformer to remain energized
  • It trips when gas accumulation reaches a threshold
  • It responds only to fluid flow, not to gas (correct)

    • In which document does the protective relay conform to its properties?

  • IEC publication 60214-1 (correct)
  • IEC publication 60364
  • ISO standard 9001
  • IEC publication 60214-2

    • What happens to the flap valve when the protective relay is triggered?

    <p>It tips over into position OFF</p> Signup and view all the answers

    What effect does the diverter switch's rated switching capacity have on the protective relay?

    <p>It does not cause the protective relay to trip</p> Signup and view all the answers

    Which component is responsible for de-energizing the transformer when the protective relay is activated?

    <p>Dry-reed magnetic switch</p> Signup and view all the answers

    What is the maximum time frame within which the oil compartment should be sealed after drying the on-load tap-changer?

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

    Which drying method is NOT mentioned as an option for the on-load tap-changer?

    <p>Heat gun drying</p> Signup and view all the answers

    What measure should be taken to prevent accidents when removing the on-load tap-changer head cover?

    <p>Check for ignition sources</p> Signup and view all the answers

    If a transformer ratio test is to be performed after drying, which section should be referenced?

    <p>Section 5.2.8</p> Signup and view all the answers

    Which of the following is an alternative method for drying the on-load tap-changer?

    <p>Drying in the transformer enclosure</p> Signup and view all the answers

    What risk is associated with explosive gases under the on-load tap-changer head cover?

    <p>Deflagration or explosion</p> Signup and view all the answers

    Which instruction is necessary before moving the on-load tap-changer into the adjustment position?

    <p>Review the provided connection diagram</p> Signup and view all the answers

    What is a key consideration when deciding between vacuum drying and vapor-phase drying for the on-load tap-changer?

    <p>Impact on dielectric values</p> Signup and view all the answers

    What is the primary function of the OILTAP® V product?

    <p>To adjust the transmission ratio of transformers without interrupting load flow</p> Signup and view all the answers

    In which type of systems is the product intended to be used?

    <p>Electrical energy systems and facilities</p> Signup and view all the answers

    What must be adhered to in order to ensure that the product does not pose any danger?

    <p>The safety instructions and warning notices in the technical file</p> Signup and view all the answers

    What is stated about the technology used in the product?

    <p>It is manufactured on the basis of state-of-the-art technology</p> Signup and view all the answers

    What may occur if the product is not used properly?

    <p>Risks to life and limb or damage to the product and other assets</p> Signup and view all the answers

    What aspect of the product's lifecycle does the technical file cover?

    <p>The product's lifecycle from installation to disposal</p> Signup and view all the answers

    Which of the following is NOT a focus of the safety instructions?

    <p>Reducing electricity bills for users</p> Signup and view all the answers

    What is the consequence of using the product against the specified requirements?

    <p>Possible danger to people and property</p> Signup and view all the answers

    What is the purpose of restricting the DC current to 10% of the rated current during measurement?

    <p>To prevent the winding from overheating</p> Signup and view all the answers

    When measuring DC resistance with the oil compartment empty, what is the maximum permitted current without interruption?

    <p>Maximum 10 A DC</p> Signup and view all the answers

    What occurs if moisture is present in the oil compartment of the on-load tap-changer?

    <p>It may lead to damage of the tap-changer</p> Signup and view all the answers

    Which statement is true regarding the measurement of DC resistance with interruptions when the oil compartment is filled with insulating fluid?

    <p>Maximum 50 A DC is permitted</p> Signup and view all the answers

    In what scenario is a maximum of 50 A DC permissible during a DC resistance measurement?

    <p>With the oil compartment filled and current interrupted</p> Signup and view all the answers

    Why is it important to monitor the status of the oil compartment during measurements?

    <p>To avoid dielectric strength reduction</p> Signup and view all the answers

    How does the maximum measured current differ when the oil compartment is empty compared to when it is filled with insulating fluid?

    <p>Higher for filled compartment</p> Signup and view all the answers

    What is the consequence of changing the operating position while measuring DC resistance?

    <p>It may lead to inaccurate resistance readings</p> Signup and view all the answers

    What is the maximum height for stacking crates to prevent damage?

    <p>1.5 m</p> Signup and view all the answers

    Which materials are mentioned as part of the packaging process?

    <p>Plastic foil and desiccant</p> Signup and view all the answers

    When should crates be stacked upright?

    <p>When the marking indicates it</p> Signup and view all the answers

    What should be avoided to keep packaged goods functional?

    <p>Having parts touch the ground</p> Signup and view all the answers

    What guarantees the stability of packaged goods during transport?

    <p>The sturdy crate design</p> Signup and view all the answers

    Which aspect of packing is specifically aimed to prevent humidity damage?

    <p>Inserting desiccants</p> Signup and view all the answers

    What symbols are necessary to follow for the shipment of non-hazardous goods?

    <p>Signature for safe transport and storage</p> Signup and view all the answers

    Which is NOT a guideline for the stacking of crates?

    <p>Stack crates in any position</p> Signup and view all the answers

    Protective clothing should have loose sleeves to prevent getting caught in machinery.

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

    Safety glasses are designed to protect the eyes from thermal hazards only.

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

    Hearing protection is necessary when exposed to environments that can lead to hearing damage.

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

    Safety shoes can help prevent injuries from falling heavy objects and slipping on wet surfaces.

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

    Hard hats provide protection primarily against respiratory hazards.

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

    Protective gloves are only useful for protecting against thermal hazards.

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

    The standard version of the drive shaft includes a cardan joint and an insulator.

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

    The maximum permissible axial offset for the drive shaft configuration is 4°.

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

    An intermediate bearing is required when the maximum value of 2472 mm is exceeded.

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

    The drive shaft does not utilize any coupling components or protective features.

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

    The protective tube is one of the eight main components listed for the drive shaft.

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

    The middle of the hand crank to the middle of the bevel gear measures 536 mm.

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

    The on-load tap-changer is designed in a spherical form which serves only as a tap selector.

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

    The insulating fluid in the on-load tap-changer is separated from the transformer oil by a cylindrical pressure-proof oil compartment.

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

    The motor-drive unit is responsible for adjusting the operational position of the on-load tap-changer upon receiving a control impulse from a humidity regulator.

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

    The on-load tap-changer head secures the tap-changer to the transformer cover.

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

    The crate must remain open during transport to ensure proper ventilation.

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

    The delivery position of the on-load tap-changer and motor-drive unit is always in the operational mode.

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

    The system overview of the on-load tap-changer transformer includes a horizontal drive shaft and an oil conservator.

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

    Only trained and authorized persons are allowed to select the sling gear and secure the load.

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

    The primary purpose of the diverter switch is to change the transformer's transmission ratio directly.

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

    Dropping, tipping, or colliding with the product can lead to expected damage regardless of weight.

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

    It is safe to walk under a suspended load while it is being lifted.

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

    The active part of the transformer is labeled as the component number 10 in the system overview.

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

    Using means of transport and lifting gear with a carrying capacity less than that stated on the delivery slip is acceptable.

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

    Oscillation stress is not a concern during transport of the product.

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

    It is essential to damage the connection contacts when lowering the on-load tap-changer into the transformer.

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

    A suitable gasket must be placed on the mounting flange to ensure compatibility with the insulating fluid.

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

    Connecting leads should be twisted to secure a stable connection.

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

    The tightening torque for the on-load tap-changer head is standardized across all screw connection elements.

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

    An expansion loop can be used if the connecting leads cause excessive mechanical strain on the on-load tap-changer.

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

    Cleaning the sealing surfaces on the mounting flange is not necessary before installation.

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

    The installation of the on-load tap-changer should not consider the design specifications.

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

    The tap winding and on-load tap-changer take-off lead must follow the connection diagram provided with the delivery.

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

    Study Notes

    Safety

    • Familiarizing with the technical file is crucial for safe product use.
    • The on-load tap-changer adjusts transformer transmission ratios without interrupting load flow.
    • Designated solely for electrical energy systems, the product poses no danger if used correctly.
    • Safety applies from delivery to disposal, protecting users, property, and the environment.

    Protective Devices

    • Protective relay integrated into the circuit breaker tripping circuit.
    • Triggers when the flow speed from the tap-changer to oil conservator exceeds limits.
    • Flap valve actuated by insulating fluid flow turns off the circuit breakers, de-energizing the transformer.
    • Complies with IEC publication 60214-1 standards and does not react to gas accumulation.

    Packaging and Transport

    • Proper crate stacking is essential to avoid product damage; do not stack above 1.5 m or pair crates exceeding 2.
    • Packaged in sturdy crates with plastic foil and desiccant for humidity control.
    • Packaging includes clear markings for safe transport and storage.

    Mounting Procedures

    • DC resistance measurement limited to 10% of rated current to prevent winding overheating.
    • Oil compartment states dictate measured current limits during resistance measurement.
    • Maximum permitted currents distinguish between empty and filled oil compartments.

    Drying Procedures

    • Moisture in the oil compartment negatively affects insulation, increasing risk of damage.
    • Seal oil compartment within 10 hours post-drying for optimal dielectric strength.
    • Drying methods include vacuum and vapor-phase in an autoclave, or within transformer tank.

    Safety Warnings

    • Ensure no ignition sources are present when removing the tap-changer head cover to avoid explosive hazards.

    Protective Clothing and Equipment

    • Close-fitting work clothing prevents getting caught in moving machinery.
    • Safety shoes protect against falling objects and provide slip resistance.
    • Safety glasses shield eyes from flying debris and hazardous liquids.
    • Visors guard the face from flying objects and dangerous substances.
    • Hard hats offer protection from falling and flying materials.
    • Hearing protection prevents noise-induced hearing damage.
    • Protective gloves protect hands from mechanical, thermal, and electrical risks.

    Product Description of Motor-Drive Unit

    • Motor-drive unit adjusts the transformer’s transmission ratio based on control impulses.
    • Components include transformer tank, motor-drive unit, on-load tap-changer, and protective relays.
    • On-load tap-changer functions as a diverter switch and tap selector within a tubular design.
    • Insulating fluid is separated from transformer oil using a cylindrical pressure-proof compartment.

    Drive Shaft Configuration

    • Standard drive shaft does not include a cardan joint or insulator.
    • Maximum axial offset allowed is 2°; failure to comply requires an intermediate bearing.
    • Measurements specify 536 mm at the middle of the hand crank to the middle of the bevel gear.

    Transportation, Receipt, and Handling

    • Closed crates must be transported to avoid injury from falling loads.
    • Securing materials must remain intact during transport.
    • Load capacity of lifting gear must match the weight specified in delivery documentation.
    • Avoid dropping, tipping, or colliding with products to prevent damage.

    Mounting Procedure

    • Lift on-load tap-changer by its head, ensuring no damage occurs to connection contacts.
    • Verify on-load tap-changer head is positioned according to design specifications.
    • Secure the on-load tap-changer head to the mounting flange with appropriate tightening torque.
    • Care must be taken to avoid mechanical strain when connecting tap windings and leads.
    • Utilize expansion loops as necessary to prevent twisting or warping of connecting leads.

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    Related Documents

    BAL_4427491_02_001_EN.pdf
    BAL_4427491_02_001_EN.pdf

    Description

    This quiz covers essential safety instructions and guidelines related to technical files for products like OILTAP® V. Understanding these safety protocols is crucial for ensuring safe handling and operation of technical machinery. Familiarize yourself with the safety measures to prevent accidents and ensure compliance.

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