Transformer bushing installation is a crucial procedure that necessitates careful handling, storing, transporting, and mounting of the bushings. Inadequate installation might cause the bushings' mechanical and electrical failures, which will cause downtime and expensive repairs. The following are important actions to take when installing transformer bushings:
Handling: In order to prevent damage, transformer bushings should be handled carefully during shipment and installation. The bushings need to be kept dry, clean, and free from any sources of pollutants, dust, or moisture.
Inspection: The bushings should be carefully inspected for any evidence of damage or flaws prior to installation. Examine the flanges, mounting hardware, and other attachments for any indications of deterioration or damage.
Mounting: To avoid any mechanical stresses that could harm the bushings, they should be attached carefully and firmly. The mounting surface for the bushings needs to be smooth, level, and strong enough to support them. The manufacturer's instructions should be followed when tightening the mounting hardware.
Electrical Connection: The electrical connections between the bushings and the transformer tank or the associated electrical system should be made carefully to ensure proper electrical insulation and electrical contact. The connections should be made using the recommended materials and techniques.
Sealing: To keep moisture out, the bushings' interaction with the transformer tank needs to be adequately sealed. The bushing and transformer tank materials, as well as the sealing material, must be compatible.
Testing: After installation, the bushings should be tested to ensure their proper electrical and mechanical performance. The testing may include electrical tests, such as the power frequency voltage withstand test, and the insulation resistance test, and mechanical tests, such as the short circuit test and the mechanical strength test.
Overall, the installation of transformer bushings requires careful planning and execution to ensure their safe and reliable operation. The installation process should follow the manufacturer's recommendations and comply with the relevant safety standards and regulations.