8504.21.00.80 - Having a power handling capacity exceeding 500 kVA but not exceeding 650 kVA

This classification covers liquid dielectric transformers specifically designed to handle a power output exceeding 500 kVA but not exceeding 650 kVA. Liquid dielectric transformers utilize insulating liquids, such as mineral oil or synthetic esters, to cool and insulate their windings. This particular range signifies a mid-to-high capacity for power transformation within the liquid dielectric category.

The key differentiator for this HTS code lies in its defined power handling capacity. It is distinct from its sibling categories which cover transformers with lower capacity thresholds: 8504.21.00.20 (not exceeding 50 kVA), 8504.21.00.40 (exceeding 50 kVA but not exceeding 100 kVA), and 8504.21.00.60 (exceeding 100 kVA but not exceeding 500 kVA). Conversely, it also precedes higher capacity liquid dielectric transformers not falling within this specific range.

As this HTS code represents a leaf node, there are no further subcategories within this specific classification. Therefore, the classification of a liquid dielectric transformer hinges precisely on its measured power handling capacity falling within the stated 500 kVA to 650 kVA range. Precise measurement and verification of this specification are crucial for accurate customs declarations.