Safety Standards for Operation

Questions and Answers

What is a critical duty of care for personnel responsible for operating the product?

Perform modifications without consultation

Ensure all warning and hazard notices are adhered to (correct)

Allow untrained staff to operate the product

Ignore environmental impacts during operation

Which personnel qualification is necessary for operating the product effectively?

Training in the installation and assembly of electrical energy systems (correct)

Experience in non-technical fields

General knowledge about electrical systems

Familiarity with various unrelated electrical devices

What can unauthorized modifications to the product lead to?

Personal injuries and operational faults (correct)

Enhanced product efficiency

Increased product lifespan

Improved safety standards

When should personnel be instructed about operational safety and hazard communication?

Regularly, as part of ongoing training Signup and view all the answers

What type of environments should the product be operated in?

Areas free from flammable or explosive materials Signup and view all the answers

What consequence might untrained personnel experience while operating the product?

Potential accidents or disruptions Signup and view all the answers

What is a significant risk associated with operating in areas prone to hazardous materials?

Risk of explosion or fire Signup and view all the answers

What is the primary focus of the operator's duty of care?

To prevent accidents and uphold safety standards Signup and view all the answers

What is the primary reason for using trained and appointed persons for selecting sling gear?

They mitigate the risk of injury or damage. Signup and view all the answers

What should be avoided to prevent possible damage during transportation of goods?

Dropping the crate. Signup and view all the answers

What load capacity should lifting gear and transport means have to ensure safety during operations?

More than 500 kg. Signup and view all the answers

Which of the following is NOT a precautionary measure when handling shipments?

Walk under hanging loads. Signup and view all the answers

What type of stress should be expected in addition to oscillation and shock stress during transport?

Jolt stress. Signup and view all the answers

In the event of a crate tipping over, which outcome can be expected regardless of the crate's weight?

Damage must be expected. Signup and view all the answers

What is a critical consideration before accepting a shipment?

Completeness based on the delivery slip. Signup and view all the answers

Which factor is NOT related to preventing damage during product transport?

Maintaining an appropriate temperature. Signup and view all the answers

Which pictogram indicates a warning of danger due to combustible substances?

Pictogram for combustible substances Signup and view all the answers

What is the primary purpose of signal words in warning notices?

To simplify and improve understanding of dangers Signup and view all the answers

Which of the following statements accurately reflects general safety information?

Reading the technical file helps in the proper handling and installation of the product. Signup and view all the answers

What is the function of the pictograms found in warning notices?

To communicate hazards visually and effectively Signup and view all the answers

Which action is recommended for users to ensure safety when working with the product?

Familiarize oneself with the operational procedures through careful reading Signup and view all the answers

What does the word 'warning' signify in the context of warning notices?

A specific action that must be avoided to prevent danger Signup and view all the answers

Which of the following is NOT a type of warning pictogram mentioned?

Warning of hazardous radiation Signup and view all the answers

Why is it important to pay particular attention to the safety information section in the technical file?

It provides necessary instructions for safe installation and operation. Signup and view all the answers

What is the first step to verify that the oil filter unit is functioning correctly after installing the filter cartridge?

Supply the motor-drive unit and control cabinet with voltage Signup and view all the answers

Which pressure reading indicates that a filter change is required in the oil filter unit?

3.6 bar Signup and view all the answers

How long should the oil filter unit be left running after switching the on-load tap-changer?

10 minutes Signup and view all the answers

What action should be taken if the pressure in the oil filter unit does not increase?

Check the phase sequence of the motor voltage Signup and view all the answers

What does setting rotary switch S30 to OFF accomplish in the operation of the oil filter unit?

It stops the oil filter unit from conveying insulating fluid Signup and view all the answers

What is the purpose of the stop-cock located on the return flange during oil filter unit operation?

To control the flow of oil out of the unit Signup and view all the answers

What should be checked regarding the motor voltage if the oil filter unit fails to start?

The motor phase sequence Signup and view all the answers

After completing the commissioning process, what is the final action required regarding the power supply?

Disconnect the motor-drive unit and control cabinet from the supply voltage Signup and view all the answers

What is the purpose of venting the on-load tap-changer head via the air-vent valve E1?

To relieve pressure and prevent damage Signup and view all the answers

When inspecting and changing the filter cartridge, which step is crucial to avoid danger of explosion?

Maintaining insulating fluid level between minimum and maximum marks Signup and view all the answers

Which action should be taken immediately after filling the oil filter unit with insulating fluid?

Perform a function test Signup and view all the answers

What is the required tightening torque for the bolts when attaching the cover of the oil filter unit?

30 Nm Signup and view all the answers

What is the primary function of the vent screw located on the return flange?

To allow air to escape for reducing pressure Signup and view all the answers

Which component must be affixed to the stop-cock for proper function after the filter cartridge has been replaced?

The return flange Signup and view all the answers

What potential issue should be watched for when managing insulating fluid in the oil conservator?

Insufficient fluid can lead to overheating Signup and view all the answers

Which of the following steps must be performed last during the oil filter unit maintenance?

Commission the transformer Signup and view all the answers

What is the first step in the operation of the on-load tap-changer maintenance procedure?

Switch the on-load tap-changer via the motor-drive unit Signup and view all the answers

How long should the oil filter unit be allowed to run after startup?

30 or 60 minutes Signup and view all the answers

What should be done 30 minutes after switching off the oil filter unit?

Remove the securing element and screw cap from the drain valve Signup and view all the answers

What is a crucial warning to be mindful of when handling the insulating fluid in the oil compartment?

Insufficient insulating fluid can cause damage to the on-load tap-changer Signup and view all the answers

What check should be performed after draining the insulating fluid?

Test the dielectric strength and water content of the insulating fluid Signup and view all the answers

What must be done after opening the drain valve to prevent damage?

Affix a warning sign to the drain valve Signup and view all the answers

Which aspect is monitored during the inspection of the oil filter unit?

Seal tightness and insulating fluid condition Signup and view all the answers

What is the purpose of commissioning the transformer as outlined in the maintenance process?

To verify the installation and functionality of the tap-changer Signup and view all the answers

Study Notes

Shipping and Handling Precautions

Protect against moisture during transport to prevent damage.
Attach lifting gear securely at the designated center of mass for safe handling.

Transportation Safeguards

Risk of severe injury or death from improper handling and tipping loads.
Only trained personnel should select sling gear and secure loads.
Means of transport should have a carrying capacity greater than 500 kg to ensure safety.

Damage Prevention During Transport

Expect oscillation, shock stress, and jolts that can lead to damage.
Avoid dropping, tipping, or colliding with products during transit.
Check all shipments for completeness and external damage before acceptance.

Warning Signals and Pictograms

Various pictograms indicate dangers associated with the equipment, such as tipping hazards and electrical voltage risks.

Safety Guidelines

Detailed instructions for safe installation, connection, commissioning, and monitoring are provided in the technical file.
Specific focus required on explosive risks; do not use in potentially explosive atmospheres.
Unauthorized modifications to the product can result in personal injury and equipment failure.

Personnel Qualifications

Intended for use by qualified personnel familiar with electrical energy systems.
Personnel must be adequately trained in installation, assembly, commissioning, and operation of the product.

Operator Responsibilities

Ensure compliance with all safety and hazard warnings.
Regularly instruct personnel on operational safety and safety instructions to prevent accidents and environmental harm.

Commissioning of the Oil Filter Unit

Ensure voltage supply to the motor-drive unit and control cabinet before starting.
Use miniature circuit breakers and the motor protective switch to activate the system.
Set rotary switch S30 to ON to initiate the oil filter unit startup.
Close the stop-cock on the return flange to build pressure, which should rise.
Verify motor phase sequence (U-V-W, clockwise) for proper startup; a deviation will prevent motor activation.
A pressure reading of 3.6 bar/0.36 MPa signals a filter change; close rotary switch S30 once maximum pressure of 4.2 bar/0.42 MPa is reached.
Open the stop-cock at the return flange and switch the on-load tap-changer via the motor-drive unit.
Run the oil filter unit for a 10-minute interval.
Disconnect power supply before maintenance procedures.

Filter Cartridge Installation

Securely attach a new filter cartridge with a new O-ring into the oil filter unit.
Automatically center the filter cartridge when closing the cover.
Fill the oil filter unit with insulating fluid.
Fasten the cover with new O-ring using 6 M10 bolts (30 Nm torque) and 2 lifting eye bolts (30 Nm torque).
Connect the return flange to the stop-cock and open stop-cocks on both feed and return flanges.

Inspection and Maintenance Procedures

Vent the oil filter unit using the vent screw on the return flange.
Release air from the on-load tap-changer head via air-vent valve E1.
Vent the feed pipe connection on the on-load tap-changer head.
Function test is essential post-maintenance to ensure proper operation.
Maintain insulating fluid levels within the "Minimum" and "Maximum" marks to prevent explosion hazards.
Commission the transformer and switch the on-load tap-changer through the motor-drive unit.
Operate the oil filter unit for a minimum of 30 or 60 minutes, depending on pump settings.
After 30 minutes of shutdown, drain insulating fluid by carefully opening the drain valve.
Close the drain valve after fluid removal, securing it with appropriate warnings.
Regularly check dielectric strength and water content of the insulating fluid to ensure safe operations.

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Description

This quiz focuses on the critical safety protocols for operating products that may pose a risk of explosion or fire due to flammable substances. It emphasizes the importance of adhering strictly to manufacturer guidelines and avoiding unauthorized modifications to ensure personal and material safety.