The Tan Delta, Partial Discharge, and AC Leakage Current testing package is used to comprehensively assess the insulation condition of electrical equipment. Tan Delta measures insulation degradation, Partial Discharge detects localized defects in the insulation, and AC Leakage Current monitors leakage current, which indicates insulation degradation. The combination of these three tests provides a complete picture of the health of the insulation system. This package allows for early identification of potential damage, allowing for more precise maintenance planning.