How do you add oil to a transformer?

To add oil to a transformer, first ensure the transformer is de-energized and fully isolated from the power supply for safety. Next, check the oil level using the gauge provided; if it’s below the recommended level, find the oil filling cap, usually located at the top or on the side of the transformer tank. Remove the cap and use a suitable pumping device to add the transformer oil slowly to avoid air entrapment. Continuously monitor the oil level until it reaches the desired fill line, then securely replace the filling cap to prevent contamination. Finally, conduct a thorough inspection for any leaks and ensure the area around the transformer is clean before re-energizing the system. Always refer to the manufacturer’s guidelines and safety protocols when handling industrial oils like transformer oil.