11kV-33kV Polymer Pin-Type Insulator Product Technical Specifications

Designed for the harsh operating conditions of 11kV-33kV medium-voltage distribution lines, this series of polymer pin-type insulators features a triple-reinforced structure:

Core load-bearing body: Epoxy glass fiber drawn rod (bending strength ≥1200MPa, twice that of steel)

Permanent protective layer: High-temperature, high-pressure molded silicone rubber skirt (hydrophobic HC1-HC2 grade)

Corrosion-resistant connectors: (hot-dip galvanized + crimping and flaw detection process)

This design completely addresses the three major failure risks associated with traditional ceramic insulators—explosion, zero-value detection, and pollution flashovers—and is suitable for regions covered by IEEE/IEC standards.

2. Intelligent crimping reliability system

Computer-controlled coaxial constant-pressure crimping (accuracy ±0.5 kN)

Acoustic emission flaw detection real-time monitoring (defect detection rate >99.2%)

Dynamic load verification (10^7 vibration fatigue tests)

3. Extreme Environment Adaptability

Contamination level: IV (salt density 0.35 mg/cm²)

Temperature range: -50°C to +80°C (UL 94 V-0 flame retardant)

UV-resistant design: silicone rubber with added fumed silica (annual aging rate

International compliance technical parameters

Note: The entire series has passed the KEMA 500kV·m power frequency wet withstand test and complies with the IEC 61109/61466 standard.