Exciter Field Winding Assembly

Copper winding assembly for the exciter section of brushless AC generators under 8501.64.0110. Provides rotating DC field excitation for main generator rotor. Classified in 8503.00.95.46 as principal part of these specific high-capacity alternators.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3%+35.0%38%
🇲🇽Mexico3%+10.0%13%
🇨🇦Canada3%+10.0%13%
🇩🇪Germany3%+10.0%13%
🇯🇵Japan3%+10.0%13%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8503.00.95Same rate: 38%

If parts of DC generators

DC exciter components use separate statistical reporting numbers.

8544.11.00Higher: 38.5% vs 38%

If imported as insulated wire without winding form

Linear insulated wire classifies under 8544 before winding fabrication.

8501.64.01Lower: 37.4% vs 38%

If complete exciter subassembly with housing

Fully assembled exciters may classify as complete generators if functional.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Provide winding diagrams showing turns/gauges matching exciter voltage/current specs

Include insulation class certification (typically Class H, 180°C) for MW generator duty

Document PMG (permanent magnet generator) integration if brushless excitation system

Related Products under HTS 8503.00.95.46

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This capacitor assembly is a critical power electronics component used in the inverter systems of AC generators classified under 8501.64.0110, such as those in wind turbines. It smooths voltage fluctuations in the DC link between the generator rectifier and inverter. It falls under HTS 8503.00.95.46 as a part solely for these specific high-capacity AC alternators.

Stator Winding Insulation Paper for Large AC Generators

High-voltage insulation paper specifically engineered for stator windings in AC generators rated ≥5 MVA under 8501.64.0110. It provides dielectric strength for high-temperature operation in wind power alternators. Classified in 8503.00.95.46 due to its principal, sole use in these specific machines.

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Rotor Retaining Ring for High-Speed Alternators

High-strength alloy steel retaining ring that secures rotor windings against centrifugal forces in AC generators spinning at 1500+ RPM under 8501.64.0110. Forged specifically for wind turbine alternator rotor assemblies. Falls under 8503.00.95.46 as a principal part of these machines.

Cooling Fan Impeller for Generator Housings

Precision-cast aluminum impeller for forced-air cooling systems in enclosed AC generators classified in 8501.64.0110. Designed for high airflow at generator operating temperatures up to 155°C. HTS 8503.00.95.46 as a part solely principally for these large alternators.

Bearing Sleeve for Generator Main Shaft

High-tin Babbitt-lined steel sleeve bearing for main rotor shafts in AC generators of 8501.64.0110. Designed for continuous duty at 3000 kW+ power levels. HTS 8503.00.95.46 as part principally used with these alternators.