Stator Winding Insulation Paper for Large AC Generators from Japan
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.
Duty Rate — Japan → United States
28%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide OEM specifications confirming dielectric properties match 8501.64.0110 generator voltage classes (typically 3-15 kV)
• Include end-user statements from generator manufacturers verifying exclusive use in qualifying alternators
• Document thickness, thermal class (F/H), and pressboard composition to distinguish from generic electrical insulation