What are the best practices for high voltage transformer bushing maintenance?

Best practices include regular visual inspections, oil level checks, and diagnostic testing like capacitance and partial discharge monitoring. Periodic insulation resistance testing and oil analysis are crucial to detect early signs of deterioration. Keeping bushings clean, monitoring for leaks, and ensuring the tightness of connections help prevent issues. Timely replacement of worn gaskets and checking for temperature fluctuations are also essential to maintain performance.