Podcast
Questions and Answers
What is the purpose of the temperature monitoring system in the oil compartment?
What is the purpose of the temperature monitoring system in the oil compartment?
Which component is responsible for changing the direction of drive motion from vertical to horizontal?
Which component is responsible for changing the direction of drive motion from vertical to horizontal?
How is the drive shaft constructed as per the provided information?
How is the drive shaft constructed as per the provided information?
Where is the vertical drive shaft located within the system?
Where is the vertical drive shaft located within the system?
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What connects the drive shaft to the mechanical components?
What connects the drive shaft to the mechanical components?
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What is the primary function of an on-load tap-changer in a transformer?
What is the primary function of an on-load tap-changer in a transformer?
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What is the main role of the drive shaft in the system?
What is the main role of the drive shaft in the system?
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Which part is located between the bevel gear and the tap-changer?
Which part is located between the bevel gear and the tap-changer?
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Which component provides the control impulse to the motor-drive unit for changing the position of the on-load tap-changer?
Which component provides the control impulse to the motor-drive unit for changing the position of the on-load tap-changer?
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What is NOT a function of the temperature monitoring system?
What is NOT a function of the temperature monitoring system?
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In the context of the described system, what role does the upper gear unit play?
In the context of the described system, what role does the upper gear unit play?
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What is likely the consequence if an on-load tap-changer fails to operate correctly?
What is likely the consequence if an on-load tap-changer fails to operate correctly?
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Which component is directly linked to the active part of the transformer?
Which component is directly linked to the active part of the transformer?
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What does the horizontal drive shaft of the on-load tap-changer primarily do?
What does the horizontal drive shaft of the on-load tap-changer primarily do?
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What should be done if safety markings on the product are damaged or missing?
What should be done if safety markings on the product are damaged or missing?
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Which of the following is a correct action regarding auxiliary materials?
Which of the following is a correct action regarding auxiliary materials?
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In what condition can the product be safely operated?
In what condition can the product be safely operated?
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What is the primary risk of installing the product in an area with explosive gases or vapors?
What is the primary risk of installing the product in an area with explosive gases or vapors?
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Which of the following behaviors could lead to malfunctions of the product?
Which of the following behaviors could lead to malfunctions of the product?
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What is the importance of safety markings on the product?
What is the importance of safety markings on the product?
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What should be done if the product is to be used in an environment with a risk of explosion?
What should be done if the product is to be used in an environment with a risk of explosion?
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What type of hoses and pipes should be used when operating the product?
What type of hoses and pipes should be used when operating the product?
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What is the maximum permissible axial offset for the drive shaft with cardan joints without an insulator?
What is the maximum permissible axial offset for the drive shaft with cardan joints without an insulator?
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What is the minimum length required for configuration with an intermediate bearing when using a drive shaft with cardan joints without an insulator?
What is the minimum length required for configuration with an intermediate bearing when using a drive shaft with cardan joints without an insulator?
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Which configuration requires the longest minimum length for a drive shaft with cardan joints?
Which configuration requires the longest minimum length for a drive shaft with cardan joints?
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Which statement is true regarding the OF 100 oil filter unit?
Which statement is true regarding the OF 100 oil filter unit?
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What happens to the requirement for an intermediate bearing when the length of V1 exceeds 2564 mm?
What happens to the requirement for an intermediate bearing when the length of V1 exceeds 2564 mm?
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What is the minimum length required for a drive shaft configuration to have an intermediate bearing if the length of V1 is greater than 2772 mm?
What is the minimum length required for a drive shaft configuration to have an intermediate bearing if the length of V1 is greater than 2772 mm?
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Which of the following configurations has the greatest minimum length for the drive shaft with cardan joints?
Which of the following configurations has the greatest minimum length for the drive shaft with cardan joints?
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What is the purpose of the paper filter insert in the OF 100 oil filter unit?
What is the purpose of the paper filter insert in the OF 100 oil filter unit?
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What is the consequence of tap-winding connecting leads being situated too closely to the change-over selector's moving parts?
What is the consequence of tap-winding connecting leads being situated too closely to the change-over selector's moving parts?
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What is the design specification for the (+) and (-) change-over selector connection contacts?
What is the design specification for the (+) and (-) change-over selector connection contacts?
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What precaution is recommended when fastening tap-winding connecting leads to the change-over selector?
What precaution is recommended when fastening tap-winding connecting leads to the change-over selector?
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What components are not included in the scope of delivery for the change-over selector connection?
What components are not included in the scope of delivery for the change-over selector connection?
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What must be considered when installing the connection contact K for the tap selector?
What must be considered when installing the connection contact K for the tap selector?
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What type of insulation is specified at the beginning of the connection process?
What type of insulation is specified at the beginning of the connection process?
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Which of the following is true regarding the change-over selector connection?
Which of the following is true regarding the change-over selector connection?
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What type of screws are specified for fastening the connection contact to the change-over selector?
What type of screws are specified for fastening the connection contact to the change-over selector?
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The motor-drive unit changes the transmission ratio of the transformer by adjusting the on-load tap-changer.
The motor-drive unit changes the transmission ratio of the transformer by adjusting the on-load tap-changer.
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The active part of the transformer is located within the transformer tank.
The active part of the transformer is located within the transformer tank.
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The bevel gear is situated above the upper gear unit in the configuration of the on-load tap-changer.
The bevel gear is situated above the upper gear unit in the configuration of the on-load tap-changer.
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An on-load tap-changer is always connected to the protective relay.
An on-load tap-changer is always connected to the protective relay.
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The vertical drive shaft operates independently from the horizontal drive shaft.
The vertical drive shaft operates independently from the horizontal drive shaft.
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A key component of the on-load tap-changer's functionality is the oil conservator.
A key component of the on-load tap-changer's functionality is the oil conservator.
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Pipe connection S includes a vent screw and cannot be connected to a drain valve.
Pipe connection S includes a vent screw and cannot be connected to a drain valve.
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The on-load tap-changer can be completely emptied via pipe connection Q.
The on-load tap-changer can be completely emptied via pipe connection Q.
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Pipe connection R is intended for the attachment of the protective relay.
Pipe connection R is intended for the attachment of the protective relay.
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Pipe connection E2 is sealed off with a blank cover and leads directly into the oil tank.
Pipe connection E2 is sealed off with a blank cover and leads directly into the oil tank.
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The purpose of pipe connection E2 includes equalizing pressure between the transformer tank and oil compartment.
The purpose of pipe connection E2 includes equalizing pressure between the transformer tank and oil compartment.
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The serial number of the on-load tap-changer is located on the transformer body.
The serial number of the on-load tap-changer is located on the transformer body.
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Pipe connection R can only be used with pipe connection Q in a specific configuration.
Pipe connection R can only be used with pipe connection Q in a specific configuration.
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Pressure equalization is essential for filling with insulating fluid in the oil compartment.
Pressure equalization is essential for filling with insulating fluid in the oil compartment.
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Exceeding the rated step voltage Uir by up to 10% is always prohibited regardless of the step capacity PStN.
Exceeding the rated step voltage Uir by up to 10% is always prohibited regardless of the step capacity PStN.
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Inappropriate use of the product includes operating it under specified design data conditions.
Inappropriate use of the product includes operating it under specified design data conditions.
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Prohibited operating conditions can arise from short circuits or inrush current impulses.
Prohibited operating conditions can arise from short circuits or inrush current impulses.
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Higher voltages occurring from transformer overexcitation are permissible under all circumstances.
Higher voltages occurring from transformer overexcitation are permissible under all circumstances.
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Taking suitable measures can help prevent operations outside the permitted operating conditions.
Taking suitable measures can help prevent operations outside the permitted operating conditions.
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All transformers electrically connected in series are exempt from the issues caused by inappropriate operating conditions.
All transformers electrically connected in series are exempt from the issues caused by inappropriate operating conditions.
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Inappropriately using the product can lead to injury of persons and damage to the product itself.
Inappropriately using the product can lead to injury of persons and damage to the product itself.
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The design data provided in the order confirmation can be ignored if the product appears to function correctly.
The design data provided in the order confirmation can be ignored if the product appears to function correctly.
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The selector's pitch of tap selector contact circle is 36 mm.
The selector's pitch of tap selector contact circle is 36 mm.
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The two coupling parts must be positioned according to the adjustment plans supplied.
The two coupling parts must be positioned according to the adjustment plans supplied.
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The red protective cap should remain on the 0-bar of the change-over selector until installation is complete.
The red protective cap should remain on the 0-bar of the change-over selector until installation is complete.
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Unsecured screw connections can lead to enhanced performance of the on-load tap-changer.
Unsecured screw connections can lead to enhanced performance of the on-load tap-changer.
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There are four holes in the selector base for securing the selector to prevent twisting.
There are four holes in the selector base for securing the selector to prevent twisting.
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The specified tightening torque must be ignored during installation to prevent over-tightening.
The specified tightening torque must be ignored during installation to prevent over-tightening.
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The tap-selector connecting leads must be carefully screwed to the connecting piece.
The tap-selector connecting leads must be carefully screwed to the connecting piece.
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The selector's connection can only slide axially in one particular direction.
The selector's connection can only slide axially in one particular direction.
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Clamping washers are not necessary to secure fittings and prevent them from coming loose.
Clamping washers are not necessary to secure fittings and prevent them from coming loose.
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The external appearance of the change-over selector connection contacts differs from that of the tap selector contacts in a multiple coarse tapping arrangement.
The external appearance of the change-over selector connection contacts differs from that of the tap selector contacts in a multiple coarse tapping arrangement.
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Tap-winding connecting leads should be routed closely to the change-over selector's moving parts to minimize space.
Tap-winding connecting leads should be routed closely to the change-over selector's moving parts to minimize space.
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Screws used for fastening the tap-winding connecting leads should be horizontal in position.
Screws used for fastening the tap-winding connecting leads should be horizontal in position.
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The screening caps should be open while securing the fittings.
The screening caps should be open while securing the fittings.
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The distance between tap-winding connecting leads and change-over selector's moving parts is not crucial for the system's functionality.
The distance between tap-winding connecting leads and change-over selector's moving parts is not crucial for the system's functionality.
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Fastening the tap-winding connecting leads to the change-over selector can be done without referring to the connection diagram.
Fastening the tap-winding connecting leads to the change-over selector can be done without referring to the connection diagram.
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The screw head and nut must be partially covered for optimal fitting.
The screw head and nut must be partially covered for optimal fitting.
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Study Notes
Explosion Protection
- Highly flammable or explosive gases, vapors, and dusts pose significant explosion and fire hazards.
- Installation, operation, or maintenance in explosion-risk areas is prohibited.
Safety Markings
- Safety markings include warning signs and information plates, crucial for safety.
- All safety markings must be observed, remain intact, and be legible.
- Damaged or missing safety markings should be replaced immediately.
Ambient Conditions
- Reliable and safe operation requires adherence to specified ambient conditions.
- Follow technical data for operating conditions and installation requirements.
Auxiliary Materials and Operating Materials
- Non-approved auxiliary or operating materials can lead to personal injury and equipment failure.
- Only manufacturer-approved insulating fluids and grounded equipment for flammable liquids must be used.
- Manufacturer-approved lubricants and auxiliary materials are essential for safe operation.
On-load Tap-changer Functionality
- On-load tap-changers adjust the transformer’s transmission ratio using a motor-drive unit controlled by a voltage regulator.
- The device is integral to transformer operation, connecting to the active part.
Product Components Overview
- Main components include transformer tank, motor-drive unit, drive shafts, bevel gear, on-load tap-changer, protective relay, oil conservator, and more.
Temperature Monitoring
- A temperature monitoring system is in place to oversee insulating fluid conditions in the oil compartment.
Drive Shaft Functionality
- The drive shaft connects the drive to the on-load tap-changer, changing motion from vertical to horizontal via a bevel gear.
- The design includes coupling brackets and bolts to ensure secure connections.
- Configurations vary based on lengths and the need for intermediate bearings.
Drive Shaft Variants
- Drive shafts equipped with cardan joints can be designed with or without insulation.
- Specific measurements for installation (V1 min) are linked to axial offsets permitted.
OF 100 Oil Filter Unit
- The OF 100 unit cleans and dries the insulating fluid of on-load tap-changers through paper filter inserts.
Change-over Selector Connection
- Ensure tap-winding connecting leads are adequately distanced from moving change-over selector parts to prevent damage.
- Change-over selector connection contacts are designed for M10 screw connections, allowing for electrical reversibility.
Mounting Guidelines
- Tap-winding leads must be fastened according to the provided connection diagram.
- Ensure fastenings are secure to avoid loosening during operation.
Safety Considerations
- Allowance for rated step voltage Uir to exceed by up to 10% temporarily, as long as rated step capacity PStN is not surpassed.
- Inappropriate use includes operating conditions outside specified design parameters; adherence to guidelines is essential for safety.
- Prohibited conditions include those arising from short circuits or inrush current when energizing transformers, posing risks to personnel and equipment.
- Adequate measures must be implemented to prevent operations outside permitted conditions.
Product Description
- The on-load tap-changer operates connections with key components including:
- Transformer Tank
- Motor-Drive Unit
- On-load Tap-Changer
- Active Part of Transformer
- Pipe connections for oil management:
- Pipe connection S allows for complete emptying via a drain valve.
- Connection R links to the protective relay; can serve interchangeably with connection Q.
- Connection E2 is used for pressure equalization and can connect to a Buchholz relay, ensuring adequate functioning during transformer operations.
Mounting Instructions
- Proper tightening torques and securing screw connections are critical to avoid damage; follow specified guidelines.
- Care should be taken when connecting parts of the tap-selector to prevent incorrect fittings and ensure stability.
- The selector base includes holes for securing; must allow axial movement while preventing twisting.
- Each connecting lead should be fixed to avoid loosening, reflecting best practices in assembly and installation.
Change-Over Selector Connection
- Protect the change-over selector against obstructions from tap-winding connecting leads to avoid blockage and potential damage.
- Ensure that connecting leads are routed away from moving parts to maintain functionality of the tap-changer.
- Identification and correct fastening of connections are crucial for operational integrity when handling multiple coarse tapping arrangements.
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Description
This quiz focuses on the essential safety guidelines for handling highly flammable or explosive gases, vapors, and dusts. Understand the risks and safety procedures necessary to prevent potential explosions and protect life and property. Ensure you are aware of proper installation, operation, and maintenance practices in hazardous areas.
