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HS Code 8504 encompasses electrical transformers, static converters (rectifiers, inductors), and inductors. The classification includes detailed subcategories for ballasts for discharge lamps (8504.10), liquid dielectric transformers (8504.21-8504.23), other transformers (8504.31-8504.34), static converters (8504.40), other inductors (8504.50), and parts (8504.90). This power conditioning equipment category includes devices that modify electrical characteristics including voltage, current type, and frequency. Products range from small electronic power supplies to massive utility-scale transformers. Technical specifications focus on power handling capacity, conversion efficiency, regulation precision, thermal management, and reliability. Applications span all sectors using electrical power, from consumer electronics to industrial processes and utility power distribution. This division represents critical equipment enabling the conditioning and adaptation of electrical power to match specific application requirements, providing the fundamental capability to step voltage up or down, convert between AC and DC, stabilize power output, and control electrical parameters for compatible operation of diverse electrical and electronic equipment.