Answer / Mandeep Singh

When installing power transformers, circuit breakers, current transformers, and potential transformers, several precautions should be taken:n
1. Always follow the manufacturer's instructions.
2. Ensure that the site is prepared correctly before installation.
3. Use proper safety equipment, such as gloves, safety glasses, and non-conductive tools.
4. Disconnect all power sources before starting work.
5. Ground all equipment to prevent static electricity.
6. Inspect the equipment for damage before and after installation.
7. Ensure that the transformer is leveled properly.
8. Fill the transformer with oil according to the manufacturer's instructions.
9. Perform a vacuum pressure test to check for leaks.n10. Connect the CT, CB, and PT according to the manufacturer's instructions.n11. Perform final tests after installation to ensure everything is working correctly.

i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

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