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Questions and Answers
What is the maximum number of equally sized crates that may be stacked on top of one another?
What protects the packaged goods from humidity during transportation?
Which of the following is NOT a mandatory symbol for the shipment of non-hazardous goods?
Why should the mounting material not be removed during transport?
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Who is allowed to select the sling gear and secure the load?
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What should be done with the packaged goods to ensure they do not touch the ground after unloading?
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What can occur due to incorrectly stacked crates?
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What is the purpose of sealing the plastic foil after the drying agent is added?
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What is the maximum allowable deviation from the vertical during installation?
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What should be the dimension of the square shaft after cutting?
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What is the prescribed tightening torque for screwing the vertical drive shaft to the drive?
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What type of grease should be used for the coupling bolts and brackets?
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What is the required unilateral axial clearance between the coupling bolt and upper coupling piece?
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What should be done to the protective covers before connecting them?
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Where should the connection cable for the monitoring system be led out?
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What should be established between the motor-drive unit housing and the transformer tank?
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What is the purpose of the shims when fitting the motor-drive unit?
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What is the correct tightening torque when securing the assembly plates to the brackets?
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What should be done prior to the assembly of the drive shaft?
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Which component connects the motor-drive unit and the on-load tap-changer?
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How many coupling brackets are used to connect each end of the drive shaft?
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What is critical to ensure before connecting the drive shaft ends?
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When positioning the motor-drive unit, which step directly follows securing the assembly plates?
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What should remain unchanged during the drive shaft assembly process?
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What is the maximum tightening torque for the nuts on the access door to the on-load tap-changer?
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Which of the following actions is necessary if the transformer is dried in an autoclave?
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What should never be present during work on the transformer due to safety concerns?
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What is advised regarding the oil compartment of the on-load tap-changer before commencing work?
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Who is allowed to perform work on the transformer according to the safety requirements?
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Which type of hoses and equipment must be used to handle flammable liquids safely?
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What risk is associated with the operation of the on-load tap-changer?
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What is the impact of drying the drive and on-load tap-changer in an autoclave?
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Which connection may be linked to the position transmitter module connections?
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What should be noted about the switchover points in relation to the motor-drive unit and the diverter switch?
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Which step is NOT part of the procedure for electrically connecting the motor-drive unit?
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What is the minimum connection cross-section required for the main grounding conductor?
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What precaution should be taken before starting the motor-drive unit?
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For external monitoring and control, which contact should be used instead of the position transmitter equipment?
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What should be done first when preparing to electrically connect the motor-drive unit?
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Which action is crucial for ensuring safety when connecting the motor-drive unit?
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The pictogram indicating a warning of dangerous electrical voltage is essential for ensuring safety around electrical equipment.
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If the product is used incorrectly, it does not pose any hazards to people or the environment.
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The technical file does not provide any information on the safe installation and connection of the product.
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Warning of a danger point pictogram is necessary for indicating high-risk areas during operation.
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All equipment supplied with the product must comply with health and safety regulations at the time of delivery.
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The product is considered safe as long as users ignore the warning notices attached to it.
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The product does not run any risks during its entire life cycle if all specified requirements are met.
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It is unnecessary to read the technical file to ensure safe operation of the product.
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All replacement parts, lubricants, and auxiliary materials must be authorized by the supplier.
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Personal protective equipment is optional during work as long as the operator is experienced.
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The installation and commissioning of the product can be done by anyone trained in general electrical work.
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Personnel must be instructed irregularly to ensure effective operational safety.
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Warning and hazard notices do not need to be prominently displayed in the workplace.
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It is acceptable to use the product only when it is in good operational condition without checking safety equipment.
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It is the operator's duty to ensure appropriate use of the product.
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Regulations for safe working must be readily available and visible in the workplace.
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The operational quality assurance system prioritizes compliance with health and safety requirements.
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Only untrained personnel are allowed to operate the product in electrical energy systems.
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Using the product in a manner different from that specified in the technical file is considered appropriate use.
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The serial numbers of the on-load tap-changer and drive must be different to ensure compatibility.
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Reinhausen Manufacturing accepts liability for damage resulting from unauthorized changes to the product.
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The use of equipment and special tools is allowed only if it is aligned with the intended purpose described in the technical file.
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Inappropriate changes to the product can potentially lead to personal injury and operational disruptions.
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All personnel can operate the equipment regardless of their training and experience.
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The monitoring system can detect a vacuum interrupter malfunction only during manual actuation of the pivot switch.
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Operating the hand crank does not provide any form of protection according to the monitoring system.
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The monitoring system allows further electrical on-load tap-change operations to continue after a fault is detected.
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An optional mechanical hand crank lock can prevent operations in case an error is indicated by the monitoring system.
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The error indication system uses a blue LED to signify errors in signal transmission.
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The on-load tap-changer is returned to its ending position when the monitoring system detects an error.
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Manual operation of the hand crank is always active even when the monitoring system is not ready for operation.
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The monitoring system evaluates previous signals only after an error occurs.
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Stored goods must be protected against moisture, pests, and unauthorized access.
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Timber beams and planks provide no advantage in storing crates.
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The ground needs to have a high carrying capacity when setting up a storage location.
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It is acceptable to leave entrance paths blocked during storage.
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Packaging foil should be kept in direct sunlight to maintain its sealing function.
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Stored goods should be checked only after a significant weather event.
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If a product is installed more than a year after delivery, it does not require any additional measures.
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Unpacking should occur immediately upon arrival for all goods.
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Study Notes
Suitability of Packaging
- Stacking limitations: Only stack up to 2 equally sized crates to prevent property damage.
- Packaging must comply with local transportation laws and regulations.
- Crates provide stable protection for packaged goods during transport, ensuring no contact with ground or loading surfaces.
- Packaged goods are stabilized within crates to avoid movement during transit.
- Sealed plastic foil surrounds goods, alongside a desiccant to protect against humidity.
Markings and Symbols
- Packaging includes safety transport and storage instructions.
- Mandatory symbols for non-hazardous goods protection include:
- Protect against moisture
- Handle with care (Fragile)
- Attach lifting gear in designated areas
- Indicate the Center of Mass for balanced handling
Transportation and Handling Precautions
- Closed transport crates must always be used; never open during transit.
- Installation of mounting materials in transport crates is crucial for safety.
- Only certified personnel should select and secure sling gear.
- Avoid walking under hanging loads to prevent accidents.
Assembly Process for Motor-Drive Unit
- Secure assembly plates to brackets below the on-load tap-changer using a tightening torque of 60 ft·lb (80 Nm).
- Align the motor-drive unit and insert shims for optimum drive shaft positioning.
- Drive shaft connects the motor-drive unit and the on-load tap-changer through coupling brackets and bolts.
- Pre-assembly greasing of coupling components recommended to facilitate connection.
Drive Shaft Assembly
- Keep the drive shaft ends aligned throughout the assembly process, maintaining vertical position within 2° deviation.
- Dimension A between shaft ends must be determined and the square shaft cut accordingly, minus 0.35".
- Coupling bolts are to be secured with a torque of 7 ft·lb (9 Nm), creating a 0.12" (3 mm) axial clearance.
Electrical Connections
- Establish grounding connections between the motor-drive unit housing and the transformer tank.
- Follow strict electrical safety protocols: switch off, lock, ground, and cover energized parts before connections.
- Confirm connections align with supplied connection diagrams and voltage specifications.
Post-Assembly Checks
- Tighten access door nuts on the on-load tap-changer to a maximum torque of 11 ft·lb (15 Nm).
Drying Procedures
- Avoid autoclave drying of the drive and on-load tap-changer to prevent damage.
- If transformer drying in an autoclave, the drive should be removed before the process.
Commissioning Procedures
- Ensure only trained technicians work near the transformer to mitigate risks of explosive gases and injuries.
- Use appropriate personal protective equipment and ensure the area is free from ignition sources.
- Confirm that the oil compartment for the on-load tap-changer is filled per instructions, and all safety equipment is operational.
Operator's Duty of Care
- Operators must prevent accidents, disruptions, and environmental harm by adhering to safety protocols.
- Compliance with all warning and hazard notices is mandatory.
- Regular training on operational safety, operating instructions, and safety guidelines must be provided to personnel.
- Safety regulations and procedures for accidents and fires should be readily accessible and visible in the workplace.
- Equipment must be maintained in sound operational condition, with regular checks on safety equipment.
- Only authorized replacement parts, lubricants, and auxiliary materials should be utilized for repairs or maintenance.
- Operating conditions and installation site requirements specified by the manufacturer must be strictly followed.
- Essential devices and personal protective equipment must be available for all applicable activities.
- Maintenance intervals and regulations should be diligently adhered to.
- Installation and commissioning must only be performed by qualified personnel in accordance with technical documentation.
Personal Protective Equipment (PPE)
- PPE must be worn during work to minimize health risks.
- Personnel must always use the required PPE specific to their tasks.
- Information about PPE should be clearly displayed in the work area.
Warning Notices
- Warning pictograms are essential for communicating hazards:
- General danger point
- Danger from electrical voltage
- Warning regarding combustible substances
- Risk of tipping
General Safety Considerations
- Thorough reading of the technical file is crucial to ensure safe installation, commissioning, and monitoring.
- Proper use according to guidelines mitigates hazards throughout the product lifecycle.
- High-quality assurance systems are in place to uphold health and safety standards.
Inappropriate Use
- Using the product against described guidelines is considered inappropriate and voids manufacturer liability.
- Unauthorized modifications can lead to personal injuries and damage.
Personnel Qualification
- Only trained staff familiar with the product's operation should be involved in handling and monitoring.
- Monitoring systems are designed to detect failures, especially during specific operational protocols.
Monitoring System Actions
- In case of malfunction, the monitoring system triggers procedures to stop operation and display error signals.
- Visual alerts include yellow LEDs for signal errors and red LEDs for vacuum interrupter errors.
Storage and Protection Measures
- Stored products must be protected from moisture, dirt, pests, and unauthorized access.
- Store on elevated structures to prevent moisture damage and facilitate ventilation.
- Regular inspections of stored items are essential to ensure condition and integrity.
Installation and Handling After Delivery
- Products not installed within six months post-delivery require immediate corrective measures.
- Regenerate drying agents and restore packaging integrity prior to installation.
- Package handling must be careful to prevent damage and ensure safety during unpacking.
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Description
This quiz covers essential guidelines for the suitability of packaging in transportation, emphasizing stacking limitations, compliance with laws, and the importance of securing goods in crates. It also highlights necessary markings and symbols for safe handling of goods to prevent damage during transit.
