Steatite Ceramic Strain Insulator
Steatite-based ceramic insulator for dead-end strain applications in low-frequency distribution lines up to 69 kV, with high mechanical tensile strength. Its low-loss tangent suits transformer bushings too. HTS 8546.20.00.60 covers this as other high-voltage ceramic insulators.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily functioning as a bushing rather than strain support
Electrical bushings of ceramics are separately classified in 8548, focusing on conductor insulation through enclosures.
If made from composite materials like polymer-ceramic hybrids
Non-ceramic or synthetic insulators go to 8546.90 for other materials in high-voltage applications.
If for laboratory or non-electrical high-temp uses
Other ceramic laboratory ware without voltage specifications falls under Chapter 69.
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Import Tips & Compliance
• Ensure supplier provides tan delta test results under 0.006; label with ANSI C29.6 class for customs; watch for reclassification if used in medium-voltage only
Related Products under HTS 8546.20.00.60
Porcelain High-Voltage Post Insulator
A ceramic post insulator made from high-alumina porcelain, designed for supporting high-voltage conductors in substations operating at low frequencies (50-60 Hz). It features a glazed surface for weather resistance and mechanical strength exceeding 10 kN. Classified under 8546.20.00.60 as a ceramic insulator for high-voltage, low-frequency electrical systems, not specified elsewhere.
Alumina Ceramic Suspension Insulator
High-purity alumina ceramic insulator used in strings for overhead power transmission lines at 132 kV and above, low-frequency AC systems. It provides superior puncture resistance and is capped with forged steel fittings. Falls under HTS 8546.20.00.60 for other ceramic high-voltage, low-frequency insulators.
Cordierite Ceramic Hollow Insulator
Hollow core cordierite ceramic insulator for GIS switchgear in high-voltage substations, low-frequency operations with excellent thermal shock resistance. Used for bushing cores in SF6 environments. Classified in 8546.20.00.60 as other ceramic high-voltage insulators.
Zirconia-Toughened Alumina Insulator
Advanced ZTA ceramic insulator for high-voltage circuit breakers in low-frequency power grids, offering fracture toughness over 5 MPa·m½. Designed for seismic-prone areas. HTS 8546.20.00.60 for other high-voltage low-freq ceramic insulators.
Porcelain Transformer Bushing Insulator
C-130 class porcelain bushing for oil-immersed power transformers rated 115 kV, low-frequency 60 Hz service. Features alternating petticoat sheds for contamination resistance. Under 8546.20.00.60 as other ceramic high-voltage insulators.
High-Alumina Ceramic Spool Insulator
Spool-shaped high-alumina ceramic insulator for guy wire strain relief in low-frequency transmission structures up to 230 kV. High tracking resistance per IEC 60273. HTS 8546.20.00.60 classification for other types.