Safety Regulations and Best Practices Quiz
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Questions and Answers

What is a critical requirement for the operational safety of the product?

  • Operating the product only during business hours.
  • Using auxiliary materials from any reputable supplier.
  • Ensuring the product is operated in well-lit areas. (correct)
  • Regularly checking the operational reliability of all equipment. (correct)

    • Which condition should be strictly avoided during the use of the product?

  • Regular inspections and maintenance.
  • Using unapproved auxiliary materials. (correct)
  • Maintaining intact safety markings.
  • Operation in a sound and operational condition.

    • Why is it important to maintain intact safety markings on the product?

  • To comply with aesthetic guidelines.
  • To ensure compliance with warranty terms.
  • To reduce operational noise levels.
  • They are essential for the safety concept of the product. (correct)

    • What should be done if safety markings on the product are damaged?

    <p>Immediately replace the damaged or missing markings.</p> Signup and view all the answers

    What is a potential consequence of operating the product in areas with highly flammable materials?

    <p>Potential for serious explosions and fire hazards.</p> Signup and view all the answers

    What is one of the stated operational requirements for the product?

    <p>Following the specified maintenance intervals.</p> Signup and view all the answers

    Under which circumstances is the operation of the product prohibited?

    <p>In areas where a risk of explosion is present.</p> Signup and view all the answers

    What type of auxiliary materials should be used with the product?

    <p>Auxiliary materials that have been approved by the manufacturer.</p> Signup and view all the answers

    What triggers the protective relay to trip in the on-load tap-changer system?

    <p>Excessive flow of insulating fluid</p> Signup and view all the answers

    Which component is looped into the circuit breaker tripping circuit to provide protection?

    <p>Protective relay</p> Signup and view all the answers

    What happens to the flap valve when the protective relay is activated?

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

    What is stated regarding the divergence of switch operations and the protective relay?

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

    Which statement correctly describes the response of the protective relay?

    <p>It responds to fluid flow rather than gas accumulation</p> Signup and view all the answers

    What standard does the protective relay conform to?

    <p>IEC publication 60214-1</p> Signup and view all the answers

    What is the normal state of gas accumulation in the protective relay?

    <p>It is a normal condition and does not require action</p> Signup and view all the answers

    What action is NOT necessary when filling the transformer with insulating fluid?

    <p>Bleeding the protective relay</p> Signup and view all the answers

    What is the first step to take when external transport damage is identified upon receipt of a shipment?

    <p>Record the damage in the shipping documents and get it countersigned by the carrier.</p> Signup and view all the answers

    In case of severe damage or total loss of goods, whom should you notify first?

    <p>The manufacturer and the relevant insurance company.</p> Signup and view all the answers

    What should you do with the packaging material after identifying the damage?

    <p>Retain it until an inspection decision has been made.</p> Signup and view all the answers

    What should be documented regarding any visible shipping damage?

    <p>Details of the damage and photographs.</p> Signup and view all the answers

    If the sealed packaging of the product is damaged, what should you NOT do?

    <p>Install or commission the packaged goods.</p> Signup and view all the answers

    What approach should be taken for damages that are discovered only after unpacking?

    <p>Prepare a damage report and make the responsible party liable.</p> Signup and view all the answers

    What is crucial if signs of corrosion are found on packaging due to moisture?

    <p>Document the corrosion and contact the manufacturer.</p> Signup and view all the answers

    Which of the following is NOT a recommended step after observing transport damage?

    <p>Modify the damaged shipment to prevent further issues.</p> Signup and view all the answers

    What is a critical safety warning regarding the transport of the crate?

    <p>Only trained individuals are allowed to secure the load.</p> Signup and view all the answers

    What precaution should be taken to prevent damage during transport?

    <p>Avoid dropping, tipping, knocking over, and colliding with the product.</p> Signup and view all the answers

    What aspects should the recipient check before accepting a delivered shipment?

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

    Which factor must be considered regarding transportation equipment?

    <p>The carrying capacity should match the weight stated on the delivery slip.</p> Signup and view all the answers

    What could potentially happen if a crate tips over during transport?

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

    What is a recommended handling procedure before transporting the crate?

    <p>Ensure that the crate is fully closed before transport.</p> Signup and view all the answers

    What should be done if there is an unexpected oscillation during transport?

    <p>Prepare for potential jolts and take appropriate measures.</p> Signup and view all the answers

    Which of the following is NOT a recommended practice during the shipment process?

    <p>Allow unsupervised personnel to handle the load.</p> Signup and view all the answers

    What must be done immediately after operating the diverter switch to complete the tap-change operation?

    <p>Crank the drive shaft of the upper gear unit for 2.5 revolutions.</p> Signup and view all the answers

    Which is the correct maximum deviation allowed from the vertical when inserting the on-load tap-changer?

    <p>1°</p> Signup and view all the answers

    What should be used to prevent damage while inserting the on-load tap-changer?

    <p>Spacers for vertical insertion</p> Signup and view all the answers

    After completing the installation, which action should be taken regarding the on-load tap-changer?

    <p>Temporarily fasten it to the supporting structure.</p> Signup and view all the answers

    Which step in installing the on-load tap-changer follows the removal of packaging material?

    <p>Insert the tap-changer into the supporting structure.</p> Signup and view all the answers

    What is a potential consequence of an incomplete tap-change operation?

    <p>It could damage the on-load tap-changer.</p> Signup and view all the answers

    What is the recommended height adjustment after fitting the bell-type tank?

    <p>Max 20 mm.</p> Signup and view all the answers

    What should be conducted in all operating positions of the transformer?

    <p>Transformer ratio test.</p> Signup and view all the answers

    A hard hat is intended to protect against flying and falling parts.

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

    An electrically trained person independently performs work on electrical systems without supervision.

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

    The operator must provide their own instruction and training related to specific tasks.

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

    Protective gloves are designed only for thermal hazards.

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

    An electrically skilled person has no requirement to be proficient in identifying potential dangers.

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

    Hearing protection is necessary to prevent damage from exposure to loud noises.

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

    The qualifications of personnel responsible for assembly and operation are mandatory for safety compliance.

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

    The visor is used to protect only from splashing liquids.

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

    Prohibited operating conditions can arise due to short circuits and transformer overexcitation.

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

    Wearing loose or unsuitable clothing decreases the risk of accidents while working with the product.

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

    It is safe to operate transformers in poorly lit work areas without any precautions.

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

    Using appropriate personal protective equipment is essential for ensuring safety during operations.

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

    Higher voltages may occur following load shedding due to inadequate transformer management.

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

    Only the transformer itself is affected by prohibited operating conditions; other connected electrical machines are not impacted.

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

    Wearing jewelry such as rings and necklaces is acceptable when operating the product.

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

    Safety measures must be taken to prevent operations outside of permitted operating conditions.

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

    Only conductors and insulated pipes are approved for use with flammable liquids.

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

    Any type of spare parts may be used without consulting Maschinenfabrik Reinhausen GmbH.

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

    Wearing damaged personal protective equipment is acceptable in certain low-risk situations.

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

    Close-fitting work clothing with a high tearing strength is recommended for safety.

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

    Safety glasses should be worn only when operating heavy machinery.

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

    Safety shoes are necessary to prevent injuries from slipping on slippery surfaces and falling heavy objects.

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

    Modifications to the product can be performed without prior consultation with Maschinenfabrik Reinhausen GmbH.

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

    Lubricants that are not approved by the manufacturer can be safely used without consequences.

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

    Reaching into the selector during tap-change operations may lead to serious injuries.

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

    A mounting flange is necessary for fitting the on-load tap-changer head on the transformer cover.

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

    It is safe to switch the on-load tap-changer during work on the selector.

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

    Stud bolts must be fitted on the mounting flange without the use of a tracing template.

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

    The sealing face of the mounting flange must not be damaged for proper installation.

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

    The tracing template for fitting stud bolts can be obtained free of charge for the first installation.

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

    The potential connection unit can be safely accessed during tap-change operations.

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

    Fit mounting flanges made by the customer must adhere to installation drawings.

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

    Mechanical strain on the on-load tap-changer can have no adverse effects.

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

    It is acceptable to lift the on-load tap-changer using the fixing bolts.

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

    The tightening torque required for securing the on-load tap-changer head is dependent on the screw connection elements used.

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

    Connections between the tap winding and on-load tap-changer should always involve twisting connection contacts.

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

    The oil suction pipe needs to be checked for leaks after installation.

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

    Securing the on-load tap-changer head cover is an optional step after mounting.

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

    Ropes used to lift the on-load tap-changer should be of equal length and at least 1.5 m long.

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

    Expansion loops are unnecessary for connecting leads to the on-load tap-changer.

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

    What is the first action that should be taken when tripping the protective relay?

    <p>Inspect the flap valve position.</p> Signup and view all the answers

    Which condition indicates that the sensor is in the OFF position?

    <p>Pressure monitoring alerts are not triggered.</p> Signup and view all the answers

    What must be ensured before re-commissioning the transformer?

    <p>All operating positions are checked and verified.</p> Signup and view all the answers

    What does the flap valve position signify when the relay trips?

    <p>Operational adjustments may be necessary.</p> Signup and view all the answers

    Which action is inappropriate during the operation of the transformer?

    <p>Ignoring pressure monitoring alerts.</p> Signup and view all the answers

    What is a potential issue if the flap valve is left in the OFF position?

    <p>Reduced transformer efficiency.</p> Signup and view all the answers

    Which of the following best describes the response when the sensor shows no pressure?

    <p>The transformer is considered at risk.</p> Signup and view all the answers

    What operational aspect should be reviewed if severe corrosion is detected during inspection?

    <p>The environmental conditions during storage.</p> Signup and view all the answers

    What is the primary function of the tap-change supervisory device?

    <p>It monitors the drive shaft and switching of the diverter switch.</p> Signup and view all the answers

    Which component connects the motor-drive unit to the on-load tap-changer?

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

    How does the bevel gear influence the operation of the drive shaft?

    <p>It alters the direction from vertical to horizontal.</p> Signup and view all the answers

    What materials make up the drive shaft's structure?

    <p>Square tube and coupling brackets</p> Signup and view all the answers

    What does the temperature monitoring system specifically track?

    <p>The temperature of the insulating fluid in the oil compartment.</p> Signup and view all the answers

    How is the alignment of the drive shaft important for its function?

    <p>It ensures smooth operation between the drive and the tap-changer.</p> Signup and view all the answers

    What safety measure should be taken regarding ignition sources before working on the protective relay?

    <p>Ensure there are no ignition sources like naked flames or hot surfaces.</p> Signup and view all the answers

    What is the potential risk when the protective relay has tripped?

    <p>There may be hidden damage to the on-load tap-changer or transformer.</p> Signup and view all the answers

    How long should one wait after switching off the transformer before starting work on the protective relay?

    <p>15 minutes.</p> Signup and view all the answers

    Which of the following actions should NOT be performed during the work on the protective relay?

    <p>Operating electrical devices.</p> Signup and view all the answers

    What should you do if the protective relay has tripped due to an overload?

    <p>Contact Maschinenfabrik Reinhausen for a check.</p> Signup and view all the answers

    What warning is associated with the explosive gases present in the protective relay?

    <p>They can deflagrate or explode, causing severe injury or death.</p> Signup and view all the answers

    Which statement correctly describes a necessary precaution when addressing the insulating fluid change?

    <p>The oil conservator breather must be checked before changing the insulating fluid.</p> Signup and view all the answers

    What should be ensured before operating any electronic devices during work on the transformer?

    <p>There are no ignition sources nearby.</p> Signup and view all the answers

    What is the initial step required before re-commissioning a transformer?

    <p>Determine and resolve the cause of the pressure monitoring device tripping.</p> Signup and view all the answers

    Which of the following precautions is critical when working on the transformer?

    <p>Keep ignition sources away from the transformer.</p> Signup and view all the answers

    Which step is necessary before working on the on-load tap-changer?

    <p>De-energize all auxiliary circuits including the tap-change supervisory device.</p> Signup and view all the answers

    What must be achieved before commissioning the transformer after fixing issues?

    <p>The sensor on the snap-action switch should be set to OPERATION position.</p> Signup and view all the answers

    What is a significant risk associated with the on-load tap-changer during maintenance?

    <p>Explosion due to ignition of explosive gases.</p> Signup and view all the answers

    Which of the following actions should NOT be taken when servicing an energized transformer?

    <p>Use tools that may create sparks in the vicinity.</p> Signup and view all the answers

    Which immediate safety measure should be enacted when addressing issues surrounding the transformer?

    <p>Guarantee that all transformer-linked circuits are de-energized.</p> Signup and view all the answers

    What type of precautions should be taken regarding ambient safety when servicing a transformer?

    <p>Keep the work area free of flammable materials and ignition sources.</p> Signup and view all the answers

    What is the primary function of the DW 2000 pressure monitoring device?

    <p>To protect the on-load tap-changer from excess pressure</p> Signup and view all the answers

    How does the pressure monitoring device signal the need to de-energize the transformer?

    <p>By tripping the snap-action switch when pressure exceeds a threshold</p> Signup and view all the answers

    What ensures the reliability of the tripping pressure setting in the pressure monitoring device?

    <p>Prevention from being changed at the factory</p> Signup and view all the answers

    Which component responds more quickly to large pressure increases compared to the protective relay?

    <p>The pressure monitoring device</p> Signup and view all the answers

    What happens to the sensor on the snap-action switch when it is activated?

    <p>It flips into the OFF position, triggering the circuit breaker</p> Signup and view all the answers

    Which of the following accurately describes the design mechanism of the pressure monitoring device?

    <p>It combines a corrugated tube and spring to function as a barometer</p> Signup and view all the answers

    What requirement is essential for the additional use of a pressure monitoring device alongside the protective relay?

    <p>Installation of the provided protective relay</p> Signup and view all the answers

    Why does low-energy interference not trigger the pressure monitoring device?

    <p>Because the required tripping pressure is not met</p> Signup and view all the answers

    Safety markings on the product are unnecessary for safe operation.

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

    Only auxiliary materials approved by the manufacturer should be used to prevent operational malfunctions.

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

    Personal protective equipment must never be worn if it is damaged.

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

    Modifications to the product can be made without consulting Maschinenfabrik Reinhausen GmbH.

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

    Spare parts approved by Maschinenfabrik Reinhausen GmbH are crucial for maintaining product safety and performance.

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

    Ambient conditions specified in the technical data are irrelevant for the operation of the product.

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

    Only flammable liquids should be handled using conductive and grounded hoses, pipes, and pump equipment.

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

    Wearing loose or unsuitable clothing significantly increases the risk of accidents while working with the product.

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

    Operating the motor-drive unit is safe even when the horizontal drive shaft is removed.

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

    The first step in emptying the oil compartment involves closing the stop-cock between the oil conservator and the on-load tap-changer.

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

    It is necessary to ensure sufficient ventilation when gas escapes during the operation of the air-vent valve.

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

    Coupling bolts can be discarded when removing the horizontal drive shaft.

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

    The gas under the on-load tap-changer head cover can remain trapped during maintenance.

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

    The correct procedure for starting the motor-drive unit includes ensuring the motor protective switch is actuated.

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

    It is optional to close the air-vent valve after the insulating fluid has flowed out.

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

    The hand crank must be turned in both directions to complete the tap-change operation.

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

    Loosening the screws on the coupling brackets is the first step in removing the horizontal drive shaft.

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

    The motor circuit is interrupted by the hand crank interlock switch during operation.

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

    It is essential to keep the protective housing door open while operating the hand crank.

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

    Switching on motor protective switch Q1 is the final step in the tap-change operation.

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

    Removing the hand crank is unnecessary before closing the protective housing door.

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

    Ignition sources should be eliminated in the surroundings of the on-load tap-changer head cover to prevent a risk of explosion.

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

    The control circuit is interrupted by the hand crank interlock switch during operation.

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

    Damage to the on-load tap-changer can occur if the tap-change operation is not completed correctly.

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

    Unsuitable insulating fluids can cause damage to the on-load tap-changer.

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

    It is acceptable to use any insulating fluid when filling the oil compartment of the on-load tap-changer.

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

    The oil conservator's stop-cock must be closed after extracting insulating fluid to prevent backflow.

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

    Before sealing the tap-changer head cover, the new o-ring should be inserted twisted.

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

    The insulating fluid in the oil compartment should be filled up to the lower edge of the coupling shaft.

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

    The air-vent valve E1 is used to vent the on-load tap-changer head after filling it with fresh insulating fluid.

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

    Extracting approximately 5–10 liters of insulating fluid is not necessary when removing the on-load tap-changer head cover.

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

    After maintenance, the on-load tap-changer should be checked for correct operation before being put back into service.

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

    Dielectric strength must be measured at a temperature of 25°C ±5°C.

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

    Changing the insulating fluid is necessary only if the limit values for water content are exceeded.

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

    Maintenance of the on-load tap-changer is mandated after every 200,000 switching operations.

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

    Operating the on-load tap-changer without an MR monitoring system requires adherence to specific maintenance intervals.

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

    Failure to perform pending maintenance may lead to minimal risk of damage.

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

    Switching elements of the divider switch insert should be replaced after 800,000 switching operations.

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

    Insulating fluid temperature is irrelevant for determining dielectric strength and water content.

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

    The warning regarding danger of explosion highlights the potential risk of not adhering to maintenance schedules.

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

    Study Notes

    Safety Precautions

    • Ensure the work area is adequately illuminated.
    • Follow local laws and regulations for accident prevention.
    • Operate equipment in sound, operational condition to prevent hazards.
    • Regularly verify the operational reliability of safety equipment.
    • Adhere to specified inspection, maintenance schedules outlined in manuals.

    Explosion Protection

    • Highly flammable materials can lead to serious explosions; avoid using the product in explosive environments.
    • Do not install or maintain equipment in areas susceptible to explosions.

    Safety Markings

    • Safety markings serve as critical components of safety protocols.
    • Maintain all safety markings on the equipment; ensure they are intact and legible.
    • Replace any missing or damaged safety markings promptly.

    Ambient Conditions

    • Equipment must be operated within specified environmental parameters for reliable performance.
    • Follow installation condition requirements strictly to ensure safety and functionality.

    Operating Materials

    • Use only manufacturer-approved insulating fluids to prevent personal injury and equipment damage.
    • Non-approved materials can cause malfunctions and unsafe conditions.

    Protective Devices - Protective Relay

    • The protective relay integrates into the circuit breaker tripping circuit, activating under specific flow conditions.
    • Tripping occurs when insulating fluid flow from the tap-changer head exceeds designated limits.
    • Normal gas accumulation in the relay is acceptable and does not require bleeding during transformer filling.
    • The protective relay must comply with IEC publication 60214-1 regulations.

    Transportation and Handling

    • Always transport the crate in a closed state to avoid tipping hazards.
    • Only trained personnel should secure and select lifting equipment for transport.
    • Check all shipments for completeness and visible damage before acceptance.
    • In case of damage, document and report to the carrier, preserving original packaging for inspection.

    Hidden Damage

    • If damage is discovered post-unpacking, inform responsible parties immediately and document findings.
    • Photograph any damages and follow up with a formal damage report.

    Installation of On-Load Tap-Changer

    • Remove protective packaging and transport materials before installation.
    • Carefully insert the tap-changer vertically into its supporting structure to avoid tensile damage.
    • Use spacers to ensure proper alignment with a maximum deviation of 1° from vertical.
    • Temporarily fasten the tap-changer during installation for stability.

    Inappropriate Use

    • Inappropriate use occurs when the product is not employed as defined in the appropriate use section.
    • Operating conditions that deviate from design data, as outlined in order confirmation, are prohibited.
    • Short circuits and inrush current impulses can create hazardous operating conditions for transformers and other electrical machines.
    • Transformers may experience higher voltages due to overexcitation after load shedding.
    • Engaging in operations outside permitted conditions poses risks of personal injury and damage to the product.

    Fundamental Safety Instructions

    • Individuals involved in transport, installation, operation, maintenance, and disposal must follow key safety measures.
    • Appropriate personal protective equipment (PPE) is essential to prevent injuries; this includes helmets, gloves, and proper footwear.
    • Loose or inappropriate clothing increases the risk of entrapment in moving parts.
    • Work areas should remain clean, well-lit, and organized to reduce accidents.

    Personal Protective Equipment (PPE)

    • Special attention to clothing: close-fitting and low-tear strength materials are recommended to prevent snagging.
    • Safety shoes are crucial to protect against falling objects and slips.
    • Safety glasses and face visors safeguard against flying debris and liquids.
    • Hearing protection is necessary in noisy environments.
    • Protective gloves should be worn to mitigate mechanical, thermal, and electrical hazards.

    Personnel Qualification

    • Qualified personnel are essential for the assembly, commissioning, and operation of the equipment.
    • An electrically skilled person must be technically qualified and knowledgeable about applicable standards and regulations.
    • Electrically trained persons receive instruction from skilled professionals and work under supervision to identify dangers and implement safety measures.
    • Operators must be trained by the operating company and instructed on potential hazards related to improper use.

    Tap-Change Operations Safety

    • Keep a safe distance of at least 1 meter during tap-change operations to avoid serious injury.
    • Do not reach into selector or other components during active tap-change operations.
    • Ensure that the on-load tap-changer is not operated while performing work on the selector or related units.

    Preparation for Installation

    • A mounting flange is required for installing the on-load tap-changer and must be pressure-tight with proper sealing.
    • Use a tracing template to align stud bolts accurately with the mounting flange for proper installation.
    • Incorrect lifting of the on-load tap-changer can lead to damage; lift it using securely attached ropes.
    • Connections must be established carefully to avoid mechanical strain, warping, or deformation of leads during installation.

    Operation of Motor-Drive Unit

    • Hand crank operation allows for manual control of the motor-drive unit, enhancing accessibility.
    • Specific sections detail procedures from operating to fault elimination.

    Fault Elimination

    • Tripping protective relay and re-commissioning processes are critical for safe operation.
    • Protective relay must be checked after tripping events to ensure transformer integrity.
    • Step-by-step procedures guide operators on managing faults and safely recommissioning equipment.

    Pressure Monitoring Device

    • The DW 2000 device prevents dangerous pressure increases in the on-load tap-changer.
    • Activated by static and dynamic pressures within the oil compartment, triggering the snap-action switch.
    • Requires manual reset post-trip; designed to avoid tripping from low-energy interference.
    • Adheres to IEC publication 60214-1 standards for operational safety.

    Tap-Change Supervisory Device

    • Monitors drive shaft's operation and switch functionality between on-load tap-changer and motor-drive unit.
    • Ensures accurate and safe switching operations in transformers.

    Temperature Monitoring System

    • Monitors insulating fluid temperatures to prevent overheating and ensure safe transformer operation.

    Drive Shaft Functionality

    • Connects mechanical components between the drive and tap-changer, facilitating energy transfer.
    • Bevel gears change shaft direction from vertical to horizontal for efficient operation.

    Maintenance Guidelines

    • Emphasizes the importance of de-energizing the transformer before maintenance to prevent electric shock.
    • Urges locking and grounding protocols prior to work to ensure safety.
    • Awareness of explosive gases is crucial; operators must avoid ignition sources during maintenance.

    Safety Warnings

    • Warnings emphasize the risks of electric shock and explosions, highlighting proper safety measures.
    • Importance of waiting post-switch-off to allow for gas dissipation before performing maintenance tasks.

    Safety Markings

    • Warning signs and safety information plates are critical safety markings on products.
    • Always observe and ensure safety markings are intact and legible.
    • Replace any damaged or missing safety markings promptly.

    Ambient Conditions

    • Operate the product only under specified ambient conditions outlined in technical data.
    • Adhere to operating conditions and installation location requirements.

    Auxiliary and Operating Materials

    • Use only manufacturer-approved insulating fluids to prevent personal injury and product malfunction.
    • Ensure hoses, pipes, and pump equipment are conductive, grounded, and suitable for flammable liquids.
    • Utilize lubricants and auxiliary materials approved by the manufacturer.

    Modifications and Conversions

    • Unauthorized modifications can result in personal injury, material damage, and operational failings.
    • Consult Maschinenfabrik Reinhausen GmbH before making any modifications.

    Spare Parts

    • Use only spare parts that are approved by Maschinenfabrik Reinhausen GmbH to avoid injuries and malfunctions.

    Personal Protective Equipment (PPE)

    • Always wear appropriate PPE during work to minimize health risks.
    • Inspect PPE for damage and do not use damaged equipment.

    Operating the Motor-Drive Unit with Hand Crank

    • Open the protective housing door and switch off motor protective switch Q1 before operation.
    • Insert the hand crank into the designated aperture and ensure it completes a full rotation as indicated.
    • Remove the hand crank after use, close the protective housing door, and switch on the motor protective switch Q1.

    Fault Elimination and Maintenance

    • Prevent explosion risks by ensuring no ignition sources are present when working on the on-load tap-changer.
    • De-energize auxiliary circuits before removing covers, and refrain from using electrical devices during maintenance.

    Maintenance Intervals

    • Mandatory maintenance after every 300,000 switching operations, contact technical service for assistance.
    • Replace switching elements after 600,000 operations to prevent potential damage.

    Oil Management

    • Before emptying the oil compartment, ensure the stop-cock is open and ventilate to release gas safely.
    • Remove insulating fluid via the air-vent valve, ensuring proper ventilation and safety measures.

    Filling and Using Insulating Fluid

    • Only use insulating fluids approved by the manufacturer to avoid damaging the on-load tap-changer.
    • Fill the oil compartment with fresh insulating fluid to the specified level while ensuring the new o-ring is correctly placed.

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    Related Documents

    VACUTAP® VV® On-load Tap-changer Installation and Commissioning Instructions PDF
    VACUTAP® VV® On-load Tap-changer Installation & Commissioning Instructions PDF
    VACUTAP® VV® On-load tap-changer Operating Instructions PDF
    VACUTAP® VV® On-load tap-changer Operating Instructions PDF

    Description

    Test your knowledge on important safety regulations and best practices for maintaining operational equipment. This quiz covers key aspects such as inspection intervals, maintenance, and accident prevention laws. Ensure you understand how to operate safely and effectively in your work environment.

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