Line Fittings | JZ-1 ~ JZ-6 Twin-Bundle Damping Spacer Damper for Overhead Transmission is an articulating damping spacer damper specifically engineered for twin-bundle overhead transmission line conductors (220kV to 500kV). Designed to maintain fixed sub-conductor geometric spacing while absorbing subspan oscillation and wind-induced aeolian vibration energy through heavy-duty viscoelastic elastomer damping bushings at the articulating clamp hinges.
Bundled conductor lines and substation soft busbar configurations face severe operational challenges from wind-induced aeolian vibration, wake-induced subspan oscillation, and massive electrodynamic attraction forces during short-circuit faults. Our precision-engineered spacer dampers provide optimal dynamic damping, mechanical stability, and corona suppression, ensuring maximum electrical grid security and extended conductor operational longevity.
Key Design & Performance Highlights:
- Material & Construction: High-strength corrosion-resistant cast aluminium alloy frame, fatigue-resistant articulating clamp heads, premium weather-resistant EPDM / Silicone damping rubber bushings, and Grade 8.8 hot-dip galvanized / stainless steel fastening hardware.
- Subspan Oscillation & Vibration Suppression: Engineered articulation angles and high-loss-factor elastomer damping bushings dissipate dynamic oscillation energy, reducing subspan bending strain below safe fatigue thresholds.
- High Mechanical & Short-Circuit Withstand: Robust structural design capable of enduring severe short-circuit electromagnetic compression and tension shock loads without permanent distortion.
- Corona & RIV Free: Smooth contoured profiles, radiused edges, and shielded fastening hardware eliminate corona discharge and radio interference on high-voltage and UHV circuits.
- Industry Approvals & Standards: Manufactured in strict accordance with GB/T 2338, DL/T 757, IEC 61854, IEEE 664; ISO 9001 certified with full mechanical, electrical, and dynamic fatigue test compliance.
