Line Fittings | MRJ Series Substation Flexible Busbar Spacer (Twin & Quad Soft Busbar) is a specialized rigid/semi-flexible busbar spacer engineered for high-voltage substation switchyard flexible stranded busbars (twin, triple, and quad flexible soft bus conductors). Designed to maintain precise conductor geometry, prevent sub-busbar attraction and flashover during high short-circuit fault currents, and eliminate wind whipping in substation open terminal fields.
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: Lightweight anti-magnetic corrosion-resistant cast aluminium alloy frame (Al 99.5% min) with Grade 8.8 hot-dip galvanized steel / stainless steel clamping bolts.
- 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 2314, DL/T 758, IEC 61284, DL/T 757; ISO 9001 certified with full mechanical, electrical, and dynamic fatigue test compliance.
