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Operating Instructions for VACUTAP® VM 300
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Operating Instructions for VACUTAP® VM 300

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@ValuableSugilite

Questions and Answers

What is the manufacturer of the VACUTAP® VM 300?

Maschinenfabrik Reinhausen GmbH

Which of the following is considered inappropriate use of the product?

  • Using the product with a transformer that does not match the serial numbers (correct)
  • Operating the product in accordance with the provided technical file
  • Using the product as specified in the technical file
  • Performing necessary work by qualified personnel

    • The VACUTAP® VM 300 is designed for use with an oil filter unit.

    False

    What must the serial numbers match for the proper use of the on-load tap-changer?

    <p>On-load tap-changer and on-load tap-changer accessories</p> Signup and view all the answers

    Which of the following is a signal word indicating a hazardous situation that will result in death or serious injury?

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

    To prevent being caught in rotating parts, one should wear appropriate personal protective ___.

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

    Match the following signal words with their meanings:

    <p>DANGER = Indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING = Indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION = Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE = Indicates measures to be taken to prevent damage to property.</p> Signup and view all the answers

    What should you never do when operating the motor-drive unit with the hand crank?

    <p>All of the above</p> Signup and view all the answers

    It is safe to operate the motor-drive unit manually with the hand crank when the transformer is energized.

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

    What must be done before removing the on-load tap-changer head cover?

    <p>De-energize all auxiliary circuits</p> Signup and view all the answers

    An operation is considered an emergency when a tap-change operation is absolutely necessary while the transformer is _____ despite a fault.

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

    Match the following fault conditions with their required actions:

    <p>Tripping of protective relay = See 'Tripping the protective relay and re-commissioning the transformer' Tripping of pressure relief device = On-load tap-changer and transformer must be checked Activation of tap-change supervisory device = Check on-load tap-changer and transformer Tripping of motor protective switch = See chapter 'Fault elimination' in motor-drive unit operating instructions</p> Signup and view all the answers

    What should be checked if the on-load tap-changer is not changing tap position?

    <p>All of the above</p> Signup and view all the answers

    The protective relay should remain in the OFF position after tripping.

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

    Which of the following conditions should be ensured for a safe work area?

    <p>Work area is clean and tidy</p> Signup and view all the answers

    The product can be operated in a non-operational condition.

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

    What types of conditions must the product's operation comply with?

    <p>Applicable laws for accident prevention.</p> Signup and view all the answers

    What should you do with damaged safety markings?

    <p>Replace them</p> Signup and view all the answers

    What is the main purpose of on-load tap-changers?

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

    Unauthorized changes to the product may lead to personal injury, material damage, and operational faults. Only modify the product after consultation with __________.

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

    Which personal protective equipment is designed to protect against falling heavy objects?

    <p>Hard hat</p> Signup and view all the answers

    What are the requirements for personnel working with the product?

    <p>Personnel must be sufficiently qualified.</p> Signup and view all the answers

    What happens when impermissible pressure increases are detected by the pressure monitoring device?

    <p>The circuit breaker trips</p> Signup and view all the answers

    Only use __________ materials approved by the manufacturer to avoid malfunctions.

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

    Match the following protective equipment with their purpose:

    <p>Safety glasses = Protect eyes from flying parts Protective gloves = Protect against mechanical hazards Hard hat = Protect against falling objects Hearing protection = Protect against hearing damage</p> Signup and view all the answers

    What is the function of the rupture disk in an on-load tap-changer?

    <p>It is a pressure relief device that responds to a defined overpressure in the oil compartment.</p> Signup and view all the answers

    What is the purpose of the MPREC® pressure relief device?

    <p>It responds to a defined overpressure in the oil compartment of the on-load tap-changer.</p> Signup and view all the answers

    What does the tap-change supervisory device monitor?

    <p>It monitors both the drive shaft between on-load tap-changer(s) and motor-drive unit and the correct switching of the diverter switch.</p> Signup and view all the answers

    What is the main function of the drive shaft?

    <p>It is the mechanical connection between the drive and the on-load tap-changer.</p> Signup and view all the answers

    What must be ensured before commissioning the transformer?

    <p>Ensure that there are no ignition sources and the on-load tap-changer is not overloaded.</p> Signup and view all the answers

    The maximum permissible axial offset for the drive shaft is _ degrees.

    <p>2</p> Signup and view all the answers

    What must be checked before filling the oil compartment with insulating fluid?

    <p>The on-load tap-changer head cover has a flange for a pressure relief device</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

    What is the procedure for checking the protective relay before commissioning?

    <p>Ground the transformer on both high-voltage and low-voltage sides and ensure that it remains de-energized during testing.</p> Signup and view all the answers

    Which of the following is NOT a component of the drive shaft?

    <p>Pressure sensor</p> Signup and view all the answers

    What should be done if the pressure monitoring device tripped?

    <p>Contact Maschinenfabrik Reinhausen to check the on-load tap-changer and transformer.</p> Signup and view all the answers

    What is the first step to take after the pressure monitoring device is tripped?

    <p>Establish time of tripping</p> Signup and view all the answers

    The on-load tap-changer can be used again immediately after the pressure monitoring device has tripped.

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

    Which of the following actions should be taken if there is leakage from the on-load tap-changer head?

    <p>Close the oil conservator stop valve</p> Signup and view all the answers

    Ensure that the transformer is not started up under any circumstances when the pressure monitoring device sensor is in the ______.

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

    What should you do if the sensor is in the OPERATION position?

    <p>Check the tripping circuit</p> Signup and view all the answers

    What should you monitor annually on the motor-drive unit/control cabinet?

    <p>Check the door seal, cable bushings, and ventilation.</p> Signup and view all the answers

    Regular visual checks are sufficient for monitoring the on-load tap-changer.

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

    After every ______ switching operations, maintenance of the on-load tap-changer is necessary.

    <p>300,000</p> Signup and view all the answers

    If the MR monitoring system fails, what should you do?

    <p>Follow the maintenance plan without MR monitoring system</p> Signup and view all the answers

    What must be ensured when filling the oil compartment with fresh insulating fluid?

    <p>The new insulating fluid must be approved by the manufacturer</p> Signup and view all the answers

    What is the purpose of the VACUTAP® VM 300?

    <p>It adjusts the transmission ratio of transformers without interrupting the load flow.</p> Signup and view all the answers

    The product can be used with an oil filter unit.

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

    Which of the following are considered appropriate uses of the VACUTAP® VM 300? (Select all that apply)

    <p>Use with specified transformer/motor-drive unit</p> Signup and view all the answers

    The warnings in this technical file are designed to prevent injuries related to __________.

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

    What should be done to ensure safe operation and maintenance of the product?

    <p>Ensure compliance with safety instructions and use personal protective equipment.</p> Signup and view all the answers

    All operating conditions outside of the design data are permitted as long as measures are taken.

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

    What is a rupture disk?

    <p>A pressure relief device without signaling contact.</p> Signup and view all the answers

    What does the MPREC® pressure relief device do?

    <p>It responds to a defined overpressure in the oil compartment of the on-load tap-changer.</p> Signup and view all the answers

    What does the tap-change supervisory device monitor?

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

    Which of the following components are part of the drive shaft?

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

    The on-load tap-changer requires a pressure relief device if it has a flange for attaching a __________.

    <p>pressure relief device.</p> Signup and view all the answers

    The drive shaft can be operational without insulating fluid.

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

    Match the following drive shaft configurations with their minimum length requirements:

    <p>Without cardan joint and without insulator = 536 mm Without cardan joint and with insulator = 706 mm With cardan joints, without insulator = 798 mm With cardan joints, with insulator = 978 mm</p> Signup and view all the answers

    What must be checked to ensure proper commissioning of the transformer?

    <p>The insulating fluid fill level is above minimum</p> Signup and view all the answers

    When should the intermediate bearing be used?

    <p>When the maximum permissible axial offset of 2472 mm is exceeded.</p> Signup and view all the answers

    Untidy and poorly lit work areas can lead to accidents.

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

    What must be checked regularly to ensure the operational reliability of safety equipment?

    <p>Operational reliability</p> Signup and view all the answers

    What should be avoided when operating the product?

    <p>Performing maintenance work in areas with a risk of explosion</p> Signup and view all the answers

    Only use ___________ approved by the manufacturer.

    <p>insulating fluids</p> Signup and view all the answers

    What type of personnel is responsible for assembly and operation?

    <p>Sufficiently qualified personnel</p> Signup and view all the answers

    The electrically skilled person is not required to meet applicable statutory regulations for accident prevention.

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

    Which of the following is personal protective equipment?

    <p>All of the above</p> Signup and view all the answers

    What is the main function of the on-load tap-changer?

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

    What should be the condition of personal protective equipment before use?

    <p>Never damaged</p> Signup and view all the answers

    What does the protective relay do?

    <p>It trips the circuit breaker when specified speed of flow is exceeded.</p> Signup and view all the answers

    Match the personnel roles with their descriptions:

    <p>Electrically Skilled Person = Has technical qualification and knowledge of safety standards Electrically Trained Person = Works under the guidance of an electrically skilled person Operator = Uses and operates the product as per instructions Authorized Personnel = Trained for special maintenance</p> Signup and view all the answers

    Inrush current impulses can lead to overload the on-load tap-changer.

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

    When should you perform tap-change operations under load conditions?

    <p>Once the inrush current impulse has subsided.</p> Signup and view all the answers

    What should you do if the hand crank is difficult to move?

    <p>Stop using it.</p> Signup and view all the answers

    Who should you contact if there is doubt about the on-load tap-changer?

    <p>Technical Service department of Maschinenfabrik Reinhausen GmbH.</p> Signup and view all the answers

    An operation is considered an emergency operation if a tap-change operation is absolutely necessary when a transformer is _____ .

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

    What may cause tripping of the protective relay?

    <p>Both A and B.</p> Signup and view all the answers

    It is safe to operate the motor-drive unit electrically while the transformer is connected if a fault is suspected.

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

    What should be done if insulating fluid is leaking from the transformer?

    <p>Close the oil conservator stop valve immediately.</p> Signup and view all the answers

    What should you do if the pressure monitoring device has been tripped?

    <p>Contact Maschinenfabrik Reinhausen</p> Signup and view all the answers

    You can re-commission the transformer without determining the cause for tripping the pressure monitoring device.

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

    How often should you check the quality of the insulating fluid for on-load tap-changers installed in positions other than the neutral point of windings?

    <p>Every 2 years</p> Signup and view all the answers

    The stop-cock between the oil conservator and the on-load tap-changer should be ______ before emptying the oil compartment.

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

    What is a significant danger when working on an energized transformer?

    <p>Electric shock</p> Signup and view all the answers

    You can operate electrical devices near a transformer if there are no apparent ignition sources.

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

    What should you do if insulating fluid is leaking?

    <p>Close the oil conservator stop valve</p> Signup and view all the answers

    What is the required action upon receiving a maintenance warning from the MR monitoring system?

    <p>Contact Maschinenfabrik Reinhausen GmbH Technical Service</p> Signup and view all the answers

    The insulating fluid must comply with the limit values specified in the ______.

    <p>technical data</p> Signup and view all the answers

    Match the following intervals with the corresponding action:

    <p>Annually = Check door seal and ventilation Every 2 years = Check insulating fluid quality After every 300,000 operations = Maintenance of the on-load tap-changer After 1.2 million operations = Selector maintenance</p> Signup and view all the answers

    What does the product on-load tap-changer adjust?

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

    Which of the following pertains to inappropriate use of the on-load tap-changer? (Select all that apply)

    <p>Performing operations outside of the permitted operating conditions</p> Signup and view all the answers

    The on-load tap-changer can be used with an oil filter unit.

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

    Which personal protective equipment should be worn during operation? (Select all that apply)

    <p>Work gloves</p> Signup and view all the answers

    The appropriate use of the on-load tap-changer is limited to __________.

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

    What should be done if personal protective equipment is damaged?

    <p>It should never be worn.</p> Signup and view all the answers

    Inrush current impulses can lead to overload of the on-load tap-changer during diverter switch operation.

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

    When should tap-change operations be performed?

    <p>Once the inrush current impulse has subsided</p> Signup and view all the answers

    It is safe to operate the motor-drive unit with the hand crank if a fault is suspected in the transformer.

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

    What should you do if the hand crank is difficult to move?

    <p>Stop using it</p> Signup and view all the answers

    What is one reason for carrying out a tap-change operation with the hand crank?

    <p>During installation or for tests in the transformer plant.</p> Signup and view all the answers

    A tap-change operation is considered an emergency when it is absolutely necessary while the transformer is __________.

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

    What should be done if a protective relay or other protective devices trip?

    <p>Check the on-load tap-changer and transformer first</p> Signup and view all the answers

    What type of device must be de-energized before removing the on-load tap-changer head cover?

    <p>Auxiliary circuits</p> Signup and view all the answers

    What should be done if insulating fluid is leaking from the on-load tap-changer head cover?

    <p>Close the oil conservator stop valve immediately</p> Signup and view all the answers

    What should you do if the flap valve of the protective relay is in the OFF position?

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

    Untidy and poorly lit work areas can lead to accidents.

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

    What should not be done in areas where a risk of explosion is present?

    <p>All of the above</p> Signup and view all the answers

    What is the role of warning signs and safety information plates on the product?

    <p>They are important safety markings that must be observed.</p> Signup and view all the answers

    Who is responsible for ensuring personnel are sufficiently qualified?

    <p>The person responsible for assembly, commissioning, operation, maintenance, and inspection.</p> Signup and view all the answers

    Personal protective equipment must be worn during work to minimize risks to health. Always wear the personal protective equipment required for the job ___ hand.

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

    Match the following types of personnel with their qualifications:

    <p>Electrically skilled person = Has technical qualifications and knowledge of applicable standards and regulations. Electrically trained person = Receives instruction and guidance from an electrically skilled person. Operator = Uses and operates the product according to the technical file. Authorized personnel = Trained to carry out special maintenance.</p> Signup and view all the answers

    What type of clothing should be worn to protect against getting caught by moving machine parts?

    <p>Close-fitting work clothing</p> Signup and view all the answers

    What is the function of the protective relay in an on-load tap-changer?

    <p>It is tripped when the specified speed of flow is exceeded, contributing to safety by de-energizing the transformer.</p> Signup and view all the answers

    The on-load tap-changer is used to adjust the transmission ratio of transformers without interrupting the ___ flow.

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

    What happens if maintenance is not carried out by the Technical Service department?

    <p>Personnel must be trained and authorized by Maschinenfabrik Reinhausen GmbH.</p> Signup and view all the answers

    What should you do if the pressure monitoring device trips the circuit breaker?

    <p>Establish the time of tripping and determine the operating position of the on-load tap-changer.</p> Signup and view all the answers

    If the pressure monitoring device sensor is in the OFF position, which of the following should you NOT do?

    <p>Start the transformer immediately</p> Signup and view all the answers

    One should operate electrical devices near the transformer to check for any ignition sources.

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

    If the dielectric strength and water content do not comply with the limit values, change the insulating fluid in accordance with the '__________' section.

    <p>Changing the insulating fluid</p> Signup and view all the answers

    When can the transformer be re-commissioned?

    <p>Once the cause for tripping the monitoring device has been determined and resolved</p> Signup and view all the answers

    How often should the quality of the insulating fluid be checked for on-load tap-changers installed in positions other than the neutral point of windings?

    <p>Every 2 years.</p> Signup and view all the answers

    Match the frequency of maintenance actions to their corresponding actions:

    <p>Every 300,000 switching operations = Maintenance of the on-load tap-changer Annually = Check the door seal and cable bushings Every 1.2 million switching operations = Selector maintenance Every 7 years = Check the quality of the insulating fluid for on-load tap-changers at the neutral point</p> Signup and view all the answers

    There is no danger of explosion when working in the oil compartment of the on-load tap-changer.

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

    What should be done if the motor-drive unit has been operated without being properly coupled?

    <p>Never operate the motor-drive unit if the horizontal drive shaft has been removed.</p> Signup and view all the answers

    What is the function of the rupture disk in the on-load tap-changer?

    <p>It is a pressure relief device that responds to a defined overpressure in the oil compartment.</p> Signup and view all the answers

    What does the MPREC® pressure relief device respond to?

    <p>Defined overpressure in the oil compartment</p> Signup and view all the answers

    The temperature monitoring system checks the temperature of the air outside the on-load tap-changer.

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

    What does the drive shaft connect?

    <p>It connects the drive and the on-load tap-changer/de-energized tap-changer.</p> Signup and view all the answers

    Which part of the drive shaft changes the direction of motion?

    <p>Bevel gear</p> Signup and view all the answers

    The drive shaft with cardan joints can handle a maximum permissible axial offset of _____ degrees.

    <p>20</p> Signup and view all the answers

    It is acceptable to operate the on-load tap-changer without a pressure relief device if it has a flange.

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

    What must be checked during commissioning regarding insulating fluids?

    <p>Only use insulating fluids approved by the manufacturer.</p> Signup and view all the answers

    What activates the sensor on the snap-action switch during the pressure monitoring device check?

    <p>Removing the cover cap</p> Signup and view all the answers

    During commissioning, the oil compartment of the on-load tap-changer must be completely filled with _____ fluid.

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

    Which of these practices should be followed to maintain a safe work area? (Select all that apply)

    <p>Ensure the work area is well lit.</p> Signup and view all the answers

    The product may be operated in any condition regardless of its operational reliability.

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

    What should you do if safety markings are damaged or missing?

    <p>Replace the safety markings.</p> Signup and view all the answers

    Auxiliary materials not approved by the manufacturer can lead to personal injury and _____.

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

    Who should modifications to the product be discussed with?

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

    Which types of personnel are mentioned in the document? (Select all that apply)

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

    Personal protective equipment is optional during work.

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

    What type of clothing should be worn in the workplace?

    <p>Close-fitting work clothing.</p> Signup and view all the answers

    Match the following personal protective equipment with their purpose:

    <p>Safety shoes = Protect against falling heavy objects Safety glasses = Protect the eyes from flying parts Hard hat = Protect against falling parts Hearing protection = Protect against hearing damage</p> Signup and view all the answers

    Where is the nameplate with the serial number located on the on-load tap-changer?

    <p>On the on-load tap-changer head cover.</p> Signup and view all the answers

    The protective relay responds to gas accumulation.

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

    What must the sensor on the pressure monitoring device be reset by?

    <p>Hand after tripping.</p> Signup and view all the answers

    What is the function of a rupture disk?

    <p>A rupture disk is a pressure relief device that responds to defined overpressure.</p> Signup and view all the answers

    What does the pressure relief device MPREC® respond to?

    <p>It responds to a defined overpressure in the oil compartment of the on-load tap-changer.</p> Signup and view all the answers

    What does the temperature monitoring system do?

    <p>It monitors the temperature of the insulating fluid in the oil compartment of the on-load tap-changer.</p> Signup and view all the answers

    What is the role of the drive shaft in the on-load tap-changer?

    <p>The drive shaft is the mechanical connection between the drive and the on-load tap-changer.</p> Signup and view all the answers

    The drive shaft can only be used in vertical configurations.

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

    The configuration for the drive shaft with cardan joints, without insulator is __________.

    <p>special model</p> Signup and view all the answers

    What must be checked during commissioning of the transformer?

    <p>Ensure that the transformer remains de-energized during testing and that all grounding connections are intact.</p> Signup and view all the answers

    What happens if the on-load tap-changer is overloaded?

    <p>It can lead to explosion.</p> Signup and view all the answers

    What must be done to avoid dangers related to explosive gases during commissioning?

    <p>Ensure there are no ignition sources and operate in safe conditions.</p> Signup and view all the answers

    During the commissioning process, which value must comply with technical data limits?

    <p>Dielectric strength</p> Signup and view all the answers

    When the maximum value of V1 is exceeded, it is necessary to use an __________.

    <p>intermediate bearing</p> Signup and view all the answers

    The signaling contact for the minimum insulating fluid fill level is not linked to the circuit breaker.

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

    Who is the manufacturer of the VACUTAP® VM 300?

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

    What is the main function of the on-load tap-changer?

    <p>It adjusts the transmission ratio of transformers without interrupting the load flow.</p> Signup and view all the answers

    The on-load tap-changer is intended for use only with the specified transformer/motor-drive unit.

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

    What should you check after the pressure monitoring device has been tripped?

    <p>Contact Maschinenfabrik Reinhausen to check on-load tap-changer and transformer.</p> Signup and view all the answers

    Which of the following is considered appropriate use for the on-load tap-changer? (Select all that apply)

    <p>Using it with the specified transformer</p> Signup and view all the answers

    This technical file is intended solely for __________ trained and authorized personnel.

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

    If the sensor is in the ______ position, there may be an error in the tripping circuit.

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

    What should personal protective equipment include when operating the product?

    <p>Helmet, work gloves, etc.</p> Signup and view all the answers

    What actions should you take if the pressure monitoring device tripped? (Select all that apply)

    <p>Contact Maschinenfabrik Reinhausen</p> Signup and view all the answers

    The insulating fluid needs to be changed if the dielectric strength and water content do not comply with limit values.

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

    Wearing jewelry is recommended while using the on-load tap-changer.

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

    What must you ensure before re-commissioning the transformer?

    <p>Ensure that the sensor on the snap-action switch is in the OPERATION position.</p> Signup and view all the answers

    What happens if the operating conditions exceed the permitted limits?

    <p>Both A and C</p> Signup and view all the answers

    Match the following inspection intervals with their associated actions:

    <p>Annually = Check the door seal Every 2 years = Check the quality of the insulating fluid Every 7 years = Check the quality of the insulating fluid at neutral point After every 300,000 switching operations = Maintenance of the on-load tap-changer</p> Signup and view all the answers

    Warnings in the technical file are displayed in a __________ format.

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

    What should be done if the insulating fluid does not comply with limit values? (Select all that apply)

    <p>Change the insulating fluid</p> Signup and view all the answers

    What should be visible connected to ground before working on the transformer?

    <p>All transformer terminals.</p> Signup and view all the answers

    What can inrush current impulses lead to during the diverter switch operation?

    <p>Overload the on-load tap-changer</p> Signup and view all the answers

    It is safe to operate the motor-drive unit electrically or with the hand crank before disconnecting the transformer if faulty.

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

    Always keep protective housing of the motor-drive unit tightly ______.

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

    During which operation is it permitted to use the hand crank?

    <p>Both B and C</p> Signup and view all the answers

    What should be done when tripping of protective relay occurs?

    <p>The on-load tap-changer and transformer must be checked.</p> Signup and view all the answers

    What should you do if insulating fluid is leaking?

    <p>Close the oil conservator stop valve immediately.</p> Signup and view all the answers

    You should wait 15 minutes after switching off the transformer before working on the protective relay.

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

    What action should be taken if the on-load tap-changer is not changing tap position?

    <p>Contact MR.</p> Signup and view all the answers

    What type of operation is considered an emergency operation?

    <p>A tap-change operation that is absolutely necessary when a transformer is energized, despite a fault in the motor-drive unit.</p> Signup and view all the answers

    What is the purpose of the on-load tap-changer?

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

    The product is intended for use outside electrical energy systems.

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

    Which of the following actions is considered appropriate use of the product? (Select all that apply)

    <p>Using the equipment and special tools included in the scope of delivery for their intended purpose</p> Signup and view all the answers

    The product must not be used with an ______ filter unit.

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

    What must match if the on-load tap-changer and accessories are supplied as a set for one order?

    <p>The serial numbers of the on-load tap-changer and the accessories.</p> Signup and view all the answers

    It is safe to wear jewelry while operating the product.

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

    Which signal word indicates a hazardous situation that could result in minor or moderate injury?

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

    The manufacturer of the product is Maschinenfabrik ______ GmbH.

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

    Inrush current impulses can be less than the transformer rated current.

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

    What should be ensured before performing tap-change operations?

    <p>The inrush current impulse has subsided</p> Signup and view all the answers

    It is safe to operate the motor-drive unit with the hand crank before disconnecting the transformer if a fault is suspected.

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

    What is a crucial step before using the hand crank during tap-change operation?

    <p>Make sure no fault is detected</p> Signup and view all the answers

    What must be done if the hand crank is difficult to move?

    <p>Stop using it.</p> Signup and view all the answers

    An operation is considered an emergency operation if a tap-change operation is absolutely necessary when a transformer is ______.

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

    What should be checked if the protective relay trips?

    <p>The on-load tap-changer head cover</p> Signup and view all the answers

    The transformer can be energized without being inspected first if the protective relay has tripped.

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

    What is the maximum allowable time to wait after switching off the transformer before working on the protective relay?

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

    Always keep the protective housing of the motor-drive unit tightly ______.

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

    What is a rupture disk?

    <p>A pressure relief device without signaling contact in accordance with IEC 60214-1.</p> Signup and view all the answers

    What does the tap-change supervisory device monitor?

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

    What is the maximum permissible axial offset for the drive shaft configuration?

    <p>2°.</p> Signup and view all the answers

    The drive shaft is a mechanical connection between the drive and the de-energized tap-changer.

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

    What must be used to prevent damage to the on-load tap-changer?

    <p>Insulating fluids approved by the manufacturer.</p> Signup and view all the answers

    What action should be taken if the on-load tap-changer head cover has a flange for attaching a pressure relief device?

    <p>Fit a pressure relief device approved for the on-load tap-changer.</p> Signup and view all the answers

    What should be checked before commissioning the transformer?

    <p>Ensure that the transformer is grounded and de-energized.</p> Signup and view all the answers

    Which of the following is a feature of the pressure relief device MPREC®?

    <p>It is supplied only upon request.</p> Signup and view all the answers

    The drive shaft without cardan joint and without insulator is the _______ version.

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

    During the commissioning process, what should be done with the automatic fire extinguishing device?

    <p>Deactivate it.</p> Signup and view all the answers

    The insulating fluid level should fall below the minimum threshold before commissioning.

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

    What can untidy and poorly lit work areas lead to?

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

    The product may only be operated in a sound, operational condition.

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

    What must be observed to ensure safety during operation?

    <p>Applicable laws for accident prevention.</p> Signup and view all the answers

    What should be avoided in areas where a risk of explosion is present?

    <p>All of the above</p> Signup and view all the answers

    Only use insulating fluids _____ by the manufacturer.

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

    Who should modifications to the product be consulted with?

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

    What is the role of an electrically skilled person?

    <p>Identify potential dangers independently</p> Signup and view all the answers

    What must personal protective equipment be during work?

    <p>Worn at all times.</p> Signup and view all the answers

    Always wear damaged personal protective equipment.

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

    What is the purpose of safety shoes?

    <p>To protect against falling heavy objects and slipping.</p> Signup and view all the answers

    Match the following protective equipment with their main purpose:

    <p>Safety glasses = To protect the eyes from flying parts Hard hat = To protect against falling and flying objects Hearing protection = To protect against hearing damage Protective gloves = To protect against mechanical and thermal hazards</p> Signup and view all the answers

    What is the function of the protective relay in the on-load tap-changer?

    <p>To trip the circuit breaker when specified flow rates are exceeded.</p> Signup and view all the answers

    The pressure monitoring device does not respond to gas accumulation.

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

    What are the two variants of the pressure monitoring device?

    <p>DW 2000 for vertical installation and DW 2000 for horizontal installation.</p> Signup and view all the answers

    What should you do after the pressure monitoring device has been tripped?

    <p>Contact Maschinenfabrik Reinhausen to check the on-load tap-changer and transformer.</p> Signup and view all the answers

    What is the first step to take if the circuit breaker is tripped by the pressure monitoring device?

    <p>Establish the time of tripping.</p> Signup and view all the answers

    The motor drive unit should be actuated by remote control after the pressure monitoring device has tripped.

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

    What is one precaution to take if the sensor is in the OPERATION position?

    <p>Check the tripping circuit.</p> Signup and view all the answers

    If the sensor is in the OFF position, what is the first action to take?

    <p>Contact and inform Maschinenfabrik Reinhausen.</p> Signup and view all the answers

    What can result in serious injury when working on the on-load tap-changer?

    <p>Failing to de-energize auxiliary circuits.</p> Signup and view all the answers

    How often should the quality of the insulating fluid be checked for on-load tap-changers installed in positions other than the neutral point?

    <p>Every 2 years.</p> Signup and view all the answers

    The interval for maintenance of the on-load tap-changer after every __________ switching operations is mandatory.

    <p>300,000</p> Signup and view all the answers

    It is safe to operate the motor-drive unit when the horizontal drive shaft has been removed.

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

    What must be checked before filling the oil compartment with fresh insulating fluid?

    <p>Ensure that the new insulating fluid has the same chemical, mechanical, thermal, and electrical properties.</p> Signup and view all the answers

    Study Notes

    Introduction

    • Operating instructions cover operation, fault management, and maintenance of the VACUTAP® VM 300 on-load tap-changer.
    • Manufacturer: Maschinenfabrik Reinhausen GmbH, based in Regensburg, Germany.
    • Important to retain related documents such as unpacking instructions, routine test reports, and order confirmations for completeness.
    • Technical communication includes hazard warnings and detailed instructions to ensure safety in operation.

    Safety

    • Emphasizes the importance of familiarizing oneself with the product and safety instructions to avoid function-related dangers.
    • Appropriate use is limited to electrical energy systems; must match specifications in official technical documents.
    • On-load tap-changer operates without interrupting load flow, suitable only for designated transformers.
    • Inappropriate use, including operating under non-compliant electrical conditions, poses risks to safety and can damage the product.

    Personal Protective Equipment

    • Use of personal protective equipment (PPE) is mandatory to avoid accidents, including helmets and gloves.
    • Loose clothing and jewelry should not be worn to prevent entanglement; hair should be secured.

    Operational Guidelines

    • Regular checks of operational reliability and maintenance as per guidelines ensure continued safety and functionality.
    • Ensure well-lit and organized work environments to prevent accidents.
    • Do not perform operations in areas with explosion risks; adhere to explosion protection measures.

    Hazard Communication

    • Warning labels indicate potential dangers and required precautions; maintaining visibility and legibility is crucial.
    • Different signal words indicate levels of risk: DANGER (life-threatening), WARNING (serious injury), CAUTION (minor injury), and NOTICE (property damage).

    Ambient and Operational Conditions

    • Must operate within specified ambient conditions for reliable functionality.
    • Use only approved insulating fluids, lubricants, and operating materials to prevent malfunctions and enhance safety.

    Maintenance and Inspection

    • Scheduled inspections and maintenance activities as indicated in the technical file are critical for safe operation.
    • Proper maintenance practices can mitigate risks associated with wear and tear of components.

    Documentation and Communication

    • Retain access to all technical and supporting documents for reference, enhancing understanding and effective operational practices.
    • Communication of important details is structured clearly for better comprehension and adherence to procedures.### Modifications and Conversions
    • Unauthorized modifications can lead to personal injuries, material damage, or operational faults.
    • Consult Maschinenfabrik Reinhausen GmbH before making any changes.

    Spare Parts

    • Using unapproved spare parts can cause physical injury and malfunctions.
    • Only utilize spare parts that are authorized by Maschinenfabrik Reinhausen GmbH.

    Personnel Qualification

    • Assembly and maintenance responsibilities require qualified personnel.

    Electrically Skilled Person

    • Must have technical qualifications, knowledge of standards, and safety regulations.
    • Capable of identifying and avoiding potential dangers and can perform work on electrical systems.

    Electrically Trained Persons

    • Receive guidance from electrically skilled personnel regarding tasks and potential dangers.

    Operator Responsibilities

    • Operate the product according to the technical file and receive training on specific tasks and dangers.

    Technical Service

    • Maintenance and repairs should ideally be performed by the Technical Service department of Maschinenfabrik Reinhausen GmbH.

    Authorized Personnel

    • Specifically trained by the company for special maintenance tasks.

    Personal Protective Equipment (PPE)

    • Always wear the required PPE to minimize health risks.
    • Avoid using damaged PPE.
    • Types of PPE include:
      • Protective Clothing: Close-fitting to prevent entanglement.
      • Safety Shoes: Protect against heavy objects and slipping.
      • Safety Glasses: Shield eyes from debris and liquids.
      • Visor: Additional facial protection from splashes and debris.
      • Hard Hat: Protects against falling objects.
      • Hearing Protection: Safeguards against noise damage.
      • Protective Gloves: Defend against thermal, mechanical, and electrical hazards.

    Product Description of On-Load Tap-Changer

    • Used to adjust transformer transmission ratios without interrupting load flow.
    • Functions by responding to control impulses to adapt to operating conditions.

    Setup/Versions

    • Main components include:
      • Transformer tank, motor-drive unit, vertical and horizontal drive shafts, on-load tap-changer, oil conservator, and protective relays.

    Pipe Connections

    • Multiple pipe connections serve functions such as draining and pressure equalization.
      • Pipe Connection Q: Closed with a cover; used for supervisory device connections.
      • Pipe Connection S: Draining function with a vent screw.
      • Pipe Connection R: Connects protective relay and conservator.
      • Pipe Connection E2: Used for pressure equalization and Buchholz relay connection.

    Protective Devices

    • Protective Relay: Trips when excessive flow is detected; essential for safety and de-energizing transformers.
    • Pressure Monitoring Device (DW): Protects against excessive pressure with quick response.
    • Rupture Disk: A pressure relief device responding to overpressure situations.
    • Tap-Change Supervisory Device: Monitors drive shafts and the switching of the diverter switch.
    • Temperature Monitoring: Ensures safe temperature levels of the insulating oil.

    Drive Shaft Function

    • Mechanically connects the drive and on-load tap-changer; utilizes bevel gears to redirect motion.

    Design/Versions

    • Made up of a square tube, coupling brackets, and bolts for secure connections.
    • If the maximum axial offset exceeds 2472 mm, an intermediate bearing is necessary for stability.### Drive Shaft Configurations
    • Drive shafts can either have a cardan joint or an insulator.
    • Maximum permissible axial offset for various configurations ranges from 2° to 20°.
    • Drive shafts without an intermediate bearing are for lengths (V1) less than or equal to 2472 mm.
    • Use of intermediate bearings is mandatory for lengths exceeding specified limits:
      • V1 > 2472 mm requires intermediate bearing for shafts without insulator.
      • V1 > 2564 mm for drive shafts with cardan joints without insulator.
      • V1 > 2772 mm for drive shafts with cardan joints with insulator.

    Commissioning Process

    • Ensure no ignition sources are present in the vicinity to prevent explosions.
    • Only use approved insulating fluids to avoid damage to the tap-changer.
    • Check for proper flange attachment for pressure relief device; operation without it is not permitted.
    • Establish equal pressure in oil compartments before starting evacuation process.
    • Fill the on-load tap-changer with new insulating fluid at designated pipe connections.

    Bleeding Procedures

    • Open all valves before bleeding air from the on-load tap-changer and suction pipe.
    • Ensuring complete bleeding of the suction pipe is essential for insulation capability.
    • Seal all openings securely after bleeding to maintain system integrity.

    Motor-Drive Unit Checks

    • Ensure the on-load tap-changer is immersed in insulating fluid before activation.
    • Function checks must be performed according to manufacturer's operating instructions.
    • Motor-drive unit coupling must be accurately inspected to prevent damage.

    Protective Relay Testing

    • Conduct tests before transformer commissioning to confirm protective relay functionality.
    • Ensure grounding during tests and that the transformer remains de-energized.
    • Conduct passive and active protection tests by simulating operational conditions.

    Pressure Monitoring Device Examination

    • Ground the transformer and ensure de-energization during testing.
    • Follow active and passive protection tests for the pressure monitoring device prior to commissioning.

    Handling Emergencies

    • Operation of the motor-drive unit with a hand crank should only occur under strict conditions.
    • Unauthorized operation may result in severe injury or death.
    • Avoid completion of tap-change operations electrically if initiated manually.
    • If the hand crank is difficult to operate, stop immediately to prevent damage.

    Fault Elimination Procedures

    • Removal of the on-load tap-changer head cover must be done carefully to avoid explosions.
    • De-energize all circuits prior to maintenance work to ensure safety.
    • Inspect on-load tap-changer and transformer immediately if protective relays trip to prevent further damage.

    Introduction

    • Operating instructions cover operation, fault management, and maintenance of the VACUTAP® VM 300 on-load tap-changer.
    • Manufacturer: Maschinenfabrik Reinhausen GmbH, based in Regensburg, Germany.
    • Important to retain related documents such as unpacking instructions, routine test reports, and order confirmations for completeness.
    • Technical communication includes hazard warnings and detailed instructions to ensure safety in operation.

    Safety

    • Emphasizes the importance of familiarizing oneself with the product and safety instructions to avoid function-related dangers.
    • Appropriate use is limited to electrical energy systems; must match specifications in official technical documents.
    • On-load tap-changer operates without interrupting load flow, suitable only for designated transformers.
    • Inappropriate use, including operating under non-compliant electrical conditions, poses risks to safety and can damage the product.

    Personal Protective Equipment

    • Use of personal protective equipment (PPE) is mandatory to avoid accidents, including helmets and gloves.
    • Loose clothing and jewelry should not be worn to prevent entanglement; hair should be secured.

    Operational Guidelines

    • Regular checks of operational reliability and maintenance as per guidelines ensure continued safety and functionality.
    • Ensure well-lit and organized work environments to prevent accidents.
    • Do not perform operations in areas with explosion risks; adhere to explosion protection measures.

    Hazard Communication

    • Warning labels indicate potential dangers and required precautions; maintaining visibility and legibility is crucial.
    • Different signal words indicate levels of risk: DANGER (life-threatening), WARNING (serious injury), CAUTION (minor injury), and NOTICE (property damage).

    Ambient and Operational Conditions

    • Must operate within specified ambient conditions for reliable functionality.
    • Use only approved insulating fluids, lubricants, and operating materials to prevent malfunctions and enhance safety.

    Maintenance and Inspection

    • Scheduled inspections and maintenance activities as indicated in the technical file are critical for safe operation.
    • Proper maintenance practices can mitigate risks associated with wear and tear of components.

    Documentation and Communication

    • Retain access to all technical and supporting documents for reference, enhancing understanding and effective operational practices.
    • Communication of important details is structured clearly for better comprehension and adherence to procedures.### Modifications and Conversions
    • Unauthorized modifications can lead to personal injuries, material damage, or operational faults.
    • Consult Maschinenfabrik Reinhausen GmbH before making any changes.

    Spare Parts

    • Using unapproved spare parts can cause physical injury and malfunctions.
    • Only utilize spare parts that are authorized by Maschinenfabrik Reinhausen GmbH.

    Personnel Qualification

    • Assembly and maintenance responsibilities require qualified personnel.

    Electrically Skilled Person

    • Must have technical qualifications, knowledge of standards, and safety regulations.
    • Capable of identifying and avoiding potential dangers and can perform work on electrical systems.

    Electrically Trained Persons

    • Receive guidance from electrically skilled personnel regarding tasks and potential dangers.

    Operator Responsibilities

    • Operate the product according to the technical file and receive training on specific tasks and dangers.

    Technical Service

    • Maintenance and repairs should ideally be performed by the Technical Service department of Maschinenfabrik Reinhausen GmbH.

    Authorized Personnel

    • Specifically trained by the company for special maintenance tasks.

    Personal Protective Equipment (PPE)

    • Always wear the required PPE to minimize health risks.
    • Avoid using damaged PPE.
    • Types of PPE include:
      • Protective Clothing: Close-fitting to prevent entanglement.
      • Safety Shoes: Protect against heavy objects and slipping.
      • Safety Glasses: Shield eyes from debris and liquids.
      • Visor: Additional facial protection from splashes and debris.
      • Hard Hat: Protects against falling objects.
      • Hearing Protection: Safeguards against noise damage.
      • Protective Gloves: Defend against thermal, mechanical, and electrical hazards.

    Product Description of On-Load Tap-Changer

    • Used to adjust transformer transmission ratios without interrupting load flow.
    • Functions by responding to control impulses to adapt to operating conditions.

    Setup/Versions

    • Main components include:
      • Transformer tank, motor-drive unit, vertical and horizontal drive shafts, on-load tap-changer, oil conservator, and protective relays.

    Pipe Connections

    • Multiple pipe connections serve functions such as draining and pressure equalization.
      • Pipe Connection Q: Closed with a cover; used for supervisory device connections.
      • Pipe Connection S: Draining function with a vent screw.
      • Pipe Connection R: Connects protective relay and conservator.
      • Pipe Connection E2: Used for pressure equalization and Buchholz relay connection.

    Protective Devices

    • Protective Relay: Trips when excessive flow is detected; essential for safety and de-energizing transformers.
    • Pressure Monitoring Device (DW): Protects against excessive pressure with quick response.
    • Rupture Disk: A pressure relief device responding to overpressure situations.
    • Tap-Change Supervisory Device: Monitors drive shafts and the switching of the diverter switch.
    • Temperature Monitoring: Ensures safe temperature levels of the insulating oil.

    Drive Shaft Function

    • Mechanically connects the drive and on-load tap-changer; utilizes bevel gears to redirect motion.

    Design/Versions

    • Made up of a square tube, coupling brackets, and bolts for secure connections.
    • If the maximum axial offset exceeds 2472 mm, an intermediate bearing is necessary for stability.### Drive Shaft Configurations
    • Drive shafts can either have a cardan joint or an insulator.
    • Maximum permissible axial offset for various configurations ranges from 2° to 20°.
    • Drive shafts without an intermediate bearing are for lengths (V1) less than or equal to 2472 mm.
    • Use of intermediate bearings is mandatory for lengths exceeding specified limits:
      • V1 > 2472 mm requires intermediate bearing for shafts without insulator.
      • V1 > 2564 mm for drive shafts with cardan joints without insulator.
      • V1 > 2772 mm for drive shafts with cardan joints with insulator.

    Commissioning Process

    • Ensure no ignition sources are present in the vicinity to prevent explosions.
    • Only use approved insulating fluids to avoid damage to the tap-changer.
    • Check for proper flange attachment for pressure relief device; operation without it is not permitted.
    • Establish equal pressure in oil compartments before starting evacuation process.
    • Fill the on-load tap-changer with new insulating fluid at designated pipe connections.

    Bleeding Procedures

    • Open all valves before bleeding air from the on-load tap-changer and suction pipe.
    • Ensuring complete bleeding of the suction pipe is essential for insulation capability.
    • Seal all openings securely after bleeding to maintain system integrity.

    Motor-Drive Unit Checks

    • Ensure the on-load tap-changer is immersed in insulating fluid before activation.
    • Function checks must be performed according to manufacturer's operating instructions.
    • Motor-drive unit coupling must be accurately inspected to prevent damage.

    Protective Relay Testing

    • Conduct tests before transformer commissioning to confirm protective relay functionality.
    • Ensure grounding during tests and that the transformer remains de-energized.
    • Conduct passive and active protection tests by simulating operational conditions.

    Pressure Monitoring Device Examination

    • Ground the transformer and ensure de-energization during testing.
    • Follow active and passive protection tests for the pressure monitoring device prior to commissioning.

    Handling Emergencies

    • Operation of the motor-drive unit with a hand crank should only occur under strict conditions.
    • Unauthorized operation may result in severe injury or death.
    • Avoid completion of tap-change operations electrically if initiated manually.
    • If the hand crank is difficult to operate, stop immediately to prevent damage.

    Fault Elimination Procedures

    • Removal of the on-load tap-changer head cover must be done carefully to avoid explosions.
    • De-energize all circuits prior to maintenance work to ensure safety.
    • Inspect on-load tap-changer and transformer immediately if protective relays trip to prevent further damage.

    Introduction

    • Operating instructions cover operation, fault management, and maintenance of the VACUTAP® VM 300 on-load tap-changer.
    • Manufacturer: Maschinenfabrik Reinhausen GmbH, based in Regensburg, Germany.
    • Important to retain related documents such as unpacking instructions, routine test reports, and order confirmations for completeness.
    • Technical communication includes hazard warnings and detailed instructions to ensure safety in operation.

    Safety

    • Emphasizes the importance of familiarizing oneself with the product and safety instructions to avoid function-related dangers.
    • Appropriate use is limited to electrical energy systems; must match specifications in official technical documents.
    • On-load tap-changer operates without interrupting load flow, suitable only for designated transformers.
    • Inappropriate use, including operating under non-compliant electrical conditions, poses risks to safety and can damage the product.

    Personal Protective Equipment

    • Use of personal protective equipment (PPE) is mandatory to avoid accidents, including helmets and gloves.
    • Loose clothing and jewelry should not be worn to prevent entanglement; hair should be secured.

    Operational Guidelines

    • Regular checks of operational reliability and maintenance as per guidelines ensure continued safety and functionality.
    • Ensure well-lit and organized work environments to prevent accidents.
    • Do not perform operations in areas with explosion risks; adhere to explosion protection measures.

    Hazard Communication

    • Warning labels indicate potential dangers and required precautions; maintaining visibility and legibility is crucial.
    • Different signal words indicate levels of risk: DANGER (life-threatening), WARNING (serious injury), CAUTION (minor injury), and NOTICE (property damage).

    Ambient and Operational Conditions

    • Must operate within specified ambient conditions for reliable functionality.
    • Use only approved insulating fluids, lubricants, and operating materials to prevent malfunctions and enhance safety.

    Maintenance and Inspection

    • Scheduled inspections and maintenance activities as indicated in the technical file are critical for safe operation.
    • Proper maintenance practices can mitigate risks associated with wear and tear of components.

    Documentation and Communication

    • Retain access to all technical and supporting documents for reference, enhancing understanding and effective operational practices.
    • Communication of important details is structured clearly for better comprehension and adherence to procedures.### Modifications and Conversions
    • Unauthorized modifications can lead to personal injuries, material damage, or operational faults.
    • Consult Maschinenfabrik Reinhausen GmbH before making any changes.

    Spare Parts

    • Using unapproved spare parts can cause physical injury and malfunctions.
    • Only utilize spare parts that are authorized by Maschinenfabrik Reinhausen GmbH.

    Personnel Qualification

    • Assembly and maintenance responsibilities require qualified personnel.

    Electrically Skilled Person

    • Must have technical qualifications, knowledge of standards, and safety regulations.
    • Capable of identifying and avoiding potential dangers and can perform work on electrical systems.

    Electrically Trained Persons

    • Receive guidance from electrically skilled personnel regarding tasks and potential dangers.

    Operator Responsibilities

    • Operate the product according to the technical file and receive training on specific tasks and dangers.

    Technical Service

    • Maintenance and repairs should ideally be performed by the Technical Service department of Maschinenfabrik Reinhausen GmbH.

    Authorized Personnel

    • Specifically trained by the company for special maintenance tasks.

    Personal Protective Equipment (PPE)

    • Always wear the required PPE to minimize health risks.
    • Avoid using damaged PPE.
    • Types of PPE include:
      • Protective Clothing: Close-fitting to prevent entanglement.
      • Safety Shoes: Protect against heavy objects and slipping.
      • Safety Glasses: Shield eyes from debris and liquids.
      • Visor: Additional facial protection from splashes and debris.
      • Hard Hat: Protects against falling objects.
      • Hearing Protection: Safeguards against noise damage.
      • Protective Gloves: Defend against thermal, mechanical, and electrical hazards.

    Product Description of On-Load Tap-Changer

    • Used to adjust transformer transmission ratios without interrupting load flow.
    • Functions by responding to control impulses to adapt to operating conditions.

    Setup/Versions

    • Main components include:
      • Transformer tank, motor-drive unit, vertical and horizontal drive shafts, on-load tap-changer, oil conservator, and protective relays.

    Pipe Connections

    • Multiple pipe connections serve functions such as draining and pressure equalization.
      • Pipe Connection Q: Closed with a cover; used for supervisory device connections.
      • Pipe Connection S: Draining function with a vent screw.
      • Pipe Connection R: Connects protective relay and conservator.
      • Pipe Connection E2: Used for pressure equalization and Buchholz relay connection.

    Protective Devices

    • Protective Relay: Trips when excessive flow is detected; essential for safety and de-energizing transformers.
    • Pressure Monitoring Device (DW): Protects against excessive pressure with quick response.
    • Rupture Disk: A pressure relief device responding to overpressure situations.
    • Tap-Change Supervisory Device: Monitors drive shafts and the switching of the diverter switch.
    • Temperature Monitoring: Ensures safe temperature levels of the insulating oil.

    Drive Shaft Function

    • Mechanically connects the drive and on-load tap-changer; utilizes bevel gears to redirect motion.

    Design/Versions

    • Made up of a square tube, coupling brackets, and bolts for secure connections.
    • If the maximum axial offset exceeds 2472 mm, an intermediate bearing is necessary for stability.### Drive Shaft Configurations
    • Drive shafts can either have a cardan joint or an insulator.
    • Maximum permissible axial offset for various configurations ranges from 2° to 20°.
    • Drive shafts without an intermediate bearing are for lengths (V1) less than or equal to 2472 mm.
    • Use of intermediate bearings is mandatory for lengths exceeding specified limits:
      • V1 > 2472 mm requires intermediate bearing for shafts without insulator.
      • V1 > 2564 mm for drive shafts with cardan joints without insulator.
      • V1 > 2772 mm for drive shafts with cardan joints with insulator.

    Commissioning Process

    • Ensure no ignition sources are present in the vicinity to prevent explosions.
    • Only use approved insulating fluids to avoid damage to the tap-changer.
    • Check for proper flange attachment for pressure relief device; operation without it is not permitted.
    • Establish equal pressure in oil compartments before starting evacuation process.
    • Fill the on-load tap-changer with new insulating fluid at designated pipe connections.

    Bleeding Procedures

    • Open all valves before bleeding air from the on-load tap-changer and suction pipe.
    • Ensuring complete bleeding of the suction pipe is essential for insulation capability.
    • Seal all openings securely after bleeding to maintain system integrity.

    Motor-Drive Unit Checks

    • Ensure the on-load tap-changer is immersed in insulating fluid before activation.
    • Function checks must be performed according to manufacturer's operating instructions.
    • Motor-drive unit coupling must be accurately inspected to prevent damage.

    Protective Relay Testing

    • Conduct tests before transformer commissioning to confirm protective relay functionality.
    • Ensure grounding during tests and that the transformer remains de-energized.
    • Conduct passive and active protection tests by simulating operational conditions.

    Pressure Monitoring Device Examination

    • Ground the transformer and ensure de-energization during testing.
    • Follow active and passive protection tests for the pressure monitoring device prior to commissioning.

    Handling Emergencies

    • Operation of the motor-drive unit with a hand crank should only occur under strict conditions.
    • Unauthorized operation may result in severe injury or death.
    • Avoid completion of tap-change operations electrically if initiated manually.
    • If the hand crank is difficult to operate, stop immediately to prevent damage.

    Fault Elimination Procedures

    • Removal of the on-load tap-changer head cover must be done carefully to avoid explosions.
    • De-energize all circuits prior to maintenance work to ensure safety.
    • Inspect on-load tap-changer and transformer immediately if protective relays trip to prevent further damage.

    Introduction

    • Operating instructions cover operation, fault management, and maintenance of the VACUTAP® VM 300 on-load tap-changer.
    • Manufacturer: Maschinenfabrik Reinhausen GmbH, based in Regensburg, Germany.
    • Important to retain related documents such as unpacking instructions, routine test reports, and order confirmations for completeness.
    • Technical communication includes hazard warnings and detailed instructions to ensure safety in operation.

    Safety

    • Emphasizes the importance of familiarizing oneself with the product and safety instructions to avoid function-related dangers.
    • Appropriate use is limited to electrical energy systems; must match specifications in official technical documents.
    • On-load tap-changer operates without interrupting load flow, suitable only for designated transformers.
    • Inappropriate use, including operating under non-compliant electrical conditions, poses risks to safety and can damage the product.

    Personal Protective Equipment

    • Use of personal protective equipment (PPE) is mandatory to avoid accidents, including helmets and gloves.
    • Loose clothing and jewelry should not be worn to prevent entanglement; hair should be secured.

    Operational Guidelines

    • Regular checks of operational reliability and maintenance as per guidelines ensure continued safety and functionality.
    • Ensure well-lit and organized work environments to prevent accidents.
    • Do not perform operations in areas with explosion risks; adhere to explosion protection measures.

    Hazard Communication

    • Warning labels indicate potential dangers and required precautions; maintaining visibility and legibility is crucial.
    • Different signal words indicate levels of risk: DANGER (life-threatening), WARNING (serious injury), CAUTION (minor injury), and NOTICE (property damage).

    Ambient and Operational Conditions

    • Must operate within specified ambient conditions for reliable functionality.
    • Use only approved insulating fluids, lubricants, and operating materials to prevent malfunctions and enhance safety.

    Maintenance and Inspection

    • Scheduled inspections and maintenance activities as indicated in the technical file are critical for safe operation.
    • Proper maintenance practices can mitigate risks associated with wear and tear of components.

    Documentation and Communication

    • Retain access to all technical and supporting documents for reference, enhancing understanding and effective operational practices.
    • Communication of important details is structured clearly for better comprehension and adherence to procedures.### Modifications and Conversions
    • Unauthorized modifications can lead to personal injuries, material damage, or operational faults.
    • Consult Maschinenfabrik Reinhausen GmbH before making any changes.

    Spare Parts

    • Using unapproved spare parts can cause physical injury and malfunctions.
    • Only utilize spare parts that are authorized by Maschinenfabrik Reinhausen GmbH.

    Personnel Qualification

    • Assembly and maintenance responsibilities require qualified personnel.

    Electrically Skilled Person

    • Must have technical qualifications, knowledge of standards, and safety regulations.
    • Capable of identifying and avoiding potential dangers and can perform work on electrical systems.

    Electrically Trained Persons

    • Receive guidance from electrically skilled personnel regarding tasks and potential dangers.

    Operator Responsibilities

    • Operate the product according to the technical file and receive training on specific tasks and dangers.

    Technical Service

    • Maintenance and repairs should ideally be performed by the Technical Service department of Maschinenfabrik Reinhausen GmbH.

    Authorized Personnel

    • Specifically trained by the company for special maintenance tasks.

    Personal Protective Equipment (PPE)

    • Always wear the required PPE to minimize health risks.
    • Avoid using damaged PPE.
    • Types of PPE include:
      • Protective Clothing: Close-fitting to prevent entanglement.
      • Safety Shoes: Protect against heavy objects and slipping.
      • Safety Glasses: Shield eyes from debris and liquids.
      • Visor: Additional facial protection from splashes and debris.
      • Hard Hat: Protects against falling objects.
      • Hearing Protection: Safeguards against noise damage.
      • Protective Gloves: Defend against thermal, mechanical, and electrical hazards.

    Product Description of On-Load Tap-Changer

    • Used to adjust transformer transmission ratios without interrupting load flow.
    • Functions by responding to control impulses to adapt to operating conditions.

    Setup/Versions

    • Main components include:
      • Transformer tank, motor-drive unit, vertical and horizontal drive shafts, on-load tap-changer, oil conservator, and protective relays.

    Pipe Connections

    • Multiple pipe connections serve functions such as draining and pressure equalization.
      • Pipe Connection Q: Closed with a cover; used for supervisory device connections.
      • Pipe Connection S: Draining function with a vent screw.
      • Pipe Connection R: Connects protective relay and conservator.
      • Pipe Connection E2: Used for pressure equalization and Buchholz relay connection.

    Protective Devices

    • Protective Relay: Trips when excessive flow is detected; essential for safety and de-energizing transformers.
    • Pressure Monitoring Device (DW): Protects against excessive pressure with quick response.
    • Rupture Disk: A pressure relief device responding to overpressure situations.
    • Tap-Change Supervisory Device: Monitors drive shafts and the switching of the diverter switch.
    • Temperature Monitoring: Ensures safe temperature levels of the insulating oil.

    Drive Shaft Function

    • Mechanically connects the drive and on-load tap-changer; utilizes bevel gears to redirect motion.

    Design/Versions

    • Made up of a square tube, coupling brackets, and bolts for secure connections.
    • If the maximum axial offset exceeds 2472 mm, an intermediate bearing is necessary for stability.### Drive Shaft Configurations
    • Drive shafts can either have a cardan joint or an insulator.
    • Maximum permissible axial offset for various configurations ranges from 2° to 20°.
    • Drive shafts without an intermediate bearing are for lengths (V1) less than or equal to 2472 mm.
    • Use of intermediate bearings is mandatory for lengths exceeding specified limits:
      • V1 > 2472 mm requires intermediate bearing for shafts without insulator.
      • V1 > 2564 mm for drive shafts with cardan joints without insulator.
      • V1 > 2772 mm for drive shafts with cardan joints with insulator.

    Commissioning Process

    • Ensure no ignition sources are present in the vicinity to prevent explosions.
    • Only use approved insulating fluids to avoid damage to the tap-changer.
    • Check for proper flange attachment for pressure relief device; operation without it is not permitted.
    • Establish equal pressure in oil compartments before starting evacuation process.
    • Fill the on-load tap-changer with new insulating fluid at designated pipe connections.

    Bleeding Procedures

    • Open all valves before bleeding air from the on-load tap-changer and suction pipe.
    • Ensuring complete bleeding of the suction pipe is essential for insulation capability.
    • Seal all openings securely after bleeding to maintain system integrity.

    Motor-Drive Unit Checks

    • Ensure the on-load tap-changer is immersed in insulating fluid before activation.
    • Function checks must be performed according to manufacturer's operating instructions.
    • Motor-drive unit coupling must be accurately inspected to prevent damage.

    Protective Relay Testing

    • Conduct tests before transformer commissioning to confirm protective relay functionality.
    • Ensure grounding during tests and that the transformer remains de-energized.
    • Conduct passive and active protection tests by simulating operational conditions.

    Pressure Monitoring Device Examination

    • Ground the transformer and ensure de-energization during testing.
    • Follow active and passive protection tests for the pressure monitoring device prior to commissioning.

    Handling Emergencies

    • Operation of the motor-drive unit with a hand crank should only occur under strict conditions.
    • Unauthorized operation may result in severe injury or death.
    • Avoid completion of tap-change operations electrically if initiated manually.
    • If the hand crank is difficult to operate, stop immediately to prevent damage.

    Fault Elimination Procedures

    • Removal of the on-load tap-changer head cover must be done carefully to avoid explosions.
    • De-energize all circuits prior to maintenance work to ensure safety.
    • Inspect on-load tap-changer and transformer immediately if protective relays trip to prevent further damage.

    Introduction

    • Operating instructions cover operation, fault management, and maintenance of the VACUTAP® VM 300 on-load tap-changer.
    • Manufacturer: Maschinenfabrik Reinhausen GmbH, based in Regensburg, Germany.
    • Important to retain related documents such as unpacking instructions, routine test reports, and order confirmations for completeness.
    • Technical communication includes hazard warnings and detailed instructions to ensure safety in operation.

    Safety

    • Emphasizes the importance of familiarizing oneself with the product and safety instructions to avoid function-related dangers.
    • Appropriate use is limited to electrical energy systems; must match specifications in official technical documents.
    • On-load tap-changer operates without interrupting load flow, suitable only for designated transformers.
    • Inappropriate use, including operating under non-compliant electrical conditions, poses risks to safety and can damage the product.

    Personal Protective Equipment

    • Use of personal protective equipment (PPE) is mandatory to avoid accidents, including helmets and gloves.
    • Loose clothing and jewelry should not be worn to prevent entanglement; hair should be secured.

    Operational Guidelines

    • Regular checks of operational reliability and maintenance as per guidelines ensure continued safety and functionality.
    • Ensure well-lit and organized work environments to prevent accidents.
    • Do not perform operations in areas with explosion risks; adhere to explosion protection measures.

    Hazard Communication

    • Warning labels indicate potential dangers and required precautions; maintaining visibility and legibility is crucial.
    • Different signal words indicate levels of risk: DANGER (life-threatening), WARNING (serious injury), CAUTION (minor injury), and NOTICE (property damage).

    Ambient and Operational Conditions

    • Must operate within specified ambient conditions for reliable functionality.
    • Use only approved insulating fluids, lubricants, and operating materials to prevent malfunctions and enhance safety.

    Maintenance and Inspection

    • Scheduled inspections and maintenance activities as indicated in the technical file are critical for safe operation.
    • Proper maintenance practices can mitigate risks associated with wear and tear of components.

    Documentation and Communication

    • Retain access to all technical and supporting documents for reference, enhancing understanding and effective operational practices.
    • Communication of important details is structured clearly for better comprehension and adherence to procedures.### Modifications and Conversions
    • Unauthorized modifications can lead to personal injuries, material damage, or operational faults.
    • Consult Maschinenfabrik Reinhausen GmbH before making any changes.

    Spare Parts

    • Using unapproved spare parts can cause physical injury and malfunctions.
    • Only utilize spare parts that are authorized by Maschinenfabrik Reinhausen GmbH.

    Personnel Qualification

    • Assembly and maintenance responsibilities require qualified personnel.

    Electrically Skilled Person

    • Must have technical qualifications, knowledge of standards, and safety regulations.
    • Capable of identifying and avoiding potential dangers and can perform work on electrical systems.

    Electrically Trained Persons

    • Receive guidance from electrically skilled personnel regarding tasks and potential dangers.

    Operator Responsibilities

    • Operate the product according to the technical file and receive training on specific tasks and dangers.

    Technical Service

    • Maintenance and repairs should ideally be performed by the Technical Service department of Maschinenfabrik Reinhausen GmbH.

    Authorized Personnel

    • Specifically trained by the company for special maintenance tasks.

    Personal Protective Equipment (PPE)

    • Always wear the required PPE to minimize health risks.
    • Avoid using damaged PPE.
    • Types of PPE include:
      • Protective Clothing: Close-fitting to prevent entanglement.
      • Safety Shoes: Protect against heavy objects and slipping.
      • Safety Glasses: Shield eyes from debris and liquids.
      • Visor: Additional facial protection from splashes and debris.
      • Hard Hat: Protects against falling objects.
      • Hearing Protection: Safeguards against noise damage.
      • Protective Gloves: Defend against thermal, mechanical, and electrical hazards.

    Product Description of On-Load Tap-Changer

    • Used to adjust transformer transmission ratios without interrupting load flow.
    • Functions by responding to control impulses to adapt to operating conditions.

    Setup/Versions

    • Main components include:
      • Transformer tank, motor-drive unit, vertical and horizontal drive shafts, on-load tap-changer, oil conservator, and protective relays.

    Pipe Connections

    • Multiple pipe connections serve functions such as draining and pressure equalization.
      • Pipe Connection Q: Closed with a cover; used for supervisory device connections.
      • Pipe Connection S: Draining function with a vent screw.
      • Pipe Connection R: Connects protective relay and conservator.
      • Pipe Connection E2: Used for pressure equalization and Buchholz relay connection.

    Protective Devices

    • Protective Relay: Trips when excessive flow is detected; essential for safety and de-energizing transformers.
    • Pressure Monitoring Device (DW): Protects against excessive pressure with quick response.
    • Rupture Disk: A pressure relief device responding to overpressure situations.
    • Tap-Change Supervisory Device: Monitors drive shafts and the switching of the diverter switch.
    • Temperature Monitoring: Ensures safe temperature levels of the insulating oil.

    Drive Shaft Function

    • Mechanically connects the drive and on-load tap-changer; utilizes bevel gears to redirect motion.

    Design/Versions

    • Made up of a square tube, coupling brackets, and bolts for secure connections.
    • If the maximum axial offset exceeds 2472 mm, an intermediate bearing is necessary for stability.### Drive Shaft Configurations
    • Drive shafts can either have a cardan joint or an insulator.
    • Maximum permissible axial offset for various configurations ranges from 2° to 20°.
    • Drive shafts without an intermediate bearing are for lengths (V1) less than or equal to 2472 mm.
    • Use of intermediate bearings is mandatory for lengths exceeding specified limits:
      • V1 > 2472 mm requires intermediate bearing for shafts without insulator.
      • V1 > 2564 mm for drive shafts with cardan joints without insulator.
      • V1 > 2772 mm for drive shafts with cardan joints with insulator.

    Commissioning Process

    • Ensure no ignition sources are present in the vicinity to prevent explosions.
    • Only use approved insulating fluids to avoid damage to the tap-changer.
    • Check for proper flange attachment for pressure relief device; operation without it is not permitted.
    • Establish equal pressure in oil compartments before starting evacuation process.
    • Fill the on-load tap-changer with new insulating fluid at designated pipe connections.

    Bleeding Procedures

    • Open all valves before bleeding air from the on-load tap-changer and suction pipe.
    • Ensuring complete bleeding of the suction pipe is essential for insulation capability.
    • Seal all openings securely after bleeding to maintain system integrity.

    Motor-Drive Unit Checks

    • Ensure the on-load tap-changer is immersed in insulating fluid before activation.
    • Function checks must be performed according to manufacturer's operating instructions.
    • Motor-drive unit coupling must be accurately inspected to prevent damage.

    Protective Relay Testing

    • Conduct tests before transformer commissioning to confirm protective relay functionality.
    • Ensure grounding during tests and that the transformer remains de-energized.
    • Conduct passive and active protection tests by simulating operational conditions.

    Pressure Monitoring Device Examination

    • Ground the transformer and ensure de-energization during testing.
    • Follow active and passive protection tests for the pressure monitoring device prior to commissioning.

    Handling Emergencies

    • Operation of the motor-drive unit with a hand crank should only occur under strict conditions.
    • Unauthorized operation may result in severe injury or death.
    • Avoid completion of tap-change operations electrically if initiated manually.
    • If the hand crank is difficult to operate, stop immediately to prevent damage.

    Fault Elimination Procedures

    • Removal of the on-load tap-changer head cover must be done carefully to avoid explosions.
    • De-energize all circuits prior to maintenance work to ensure safety.
    • Inspect on-load tap-changer and transformer immediately if protective relays trip to prevent further damage.

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    Description

    This quiz covers the operating instructions for the VACUTAP® VM 300 on-load tap-changer. It focuses on understanding the components, functionality, and maintenance of the device. Participants will learn the essential details that ensure safe and effective operation.

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