The cable fault testerunder Wuhan UHV can help many power workers conduct various power tests more conveniently.

After locating the fault point, the steps for repairing the cable fault need to be carried out clearly and orderly to ensure the repair effect and safety. The following are the cable fault repair steps summarized based on relevant information:

1、 Preparation stage

Safety measures:

Ensure that the power has been cut off and hang warning signs such as' Do not close '.

Wear personal protective equipment such as insulated gloves, insulated boots, goggles, etc.

Prepare necessary tools and equipment, such as insulation resistance tester, cable fault locator, high-voltage adhesive tape, insulation resin, etc.

Fault point confirmation:

Based on the positioning results, confirm the location and damage of the fault point again.

2、 Repair steps

Clean up the site:

Clean up the debris and dirt around the fault point to ensure a clean working environment.

Fault handling:

Local damage: If the cable is only partially damaged and the insulation layer has not been severely damaged, local repair method can be used.

Remove loose objects, dirt, etc. from the damaged area.

Remove the insulation layer on both sides of the damaged area to expose the cable.

Treat the exposed parts as needed, such as polishing, cleaning, etc.

Wrap and bond with high-voltage adhesive tape or other insulating materials to ensure that the repaired area is close to the appearance of the original cable.

Serious damage: If the cable is damaged to a large extent or the insulation layer has been severely damaged, a comprehensive replacement method is required.

Cut off the damaged cable section and prepare new cables of the same specifications and length.

Peel off the insulation layer at both ends of the new cable to expose the metal conductor.

Connect the new cable to the metal conductor of the original cable to ensure a secure and reliable connection.

Insulate the connection, such as wrapping it with insulation sleeves or tape.

Insulation test:

After the repair is completed, use an insulation resistance tester to test the insulation resistance of the repaired area to ensure that the insulation resistance value is within a safe range.

Appearance inspection:

Perform a visual inspection on the repaired cable to ensure that there are no missing tools, materials, or other debris.

3、 Subsequent work

Record and report:

Record the entire process of troubleshooting and repair, including fault symptoms, location results, repair measures, etc.

Write a fault report to provide reference for future maintenance and handling of similar faults.

Restore power supply:

After confirming that the cable has been repaired and tested, restore power and observe the operation of the cable.

Regular testing:

Regularly inspect and maintain the repaired cables, promptly identify and address potential issues.

4、 Precautions

Safety first: Throughout the entire repair process, it is necessary to strictly follow safety operating procedures to ensure the safety of personnel and equipment.

Professional operation: Cable fault repair requires certain professional knowledge and skills, and it is recommended to have professional personnel or technical teams carry out the operation.

Environmental considerations: During the repair process, attention should be paid to the impact of environmental factors on cables, such as temperature, humidity, corrosion, etc.

By following the above steps and precautions, cable faults can be efficiently repaired and the safe and reliable operation of the cable can be ensured.