289 GIS Bushing: High-Performance Insulation Solution
for Gas Insulated Switchgear
What is a 289 GIS Bushing?
The 289 GIS Bushing is a specialized epoxy resin insulation component designed for Gas Insulated Switchgear (GIS) systems, providing reliable electrical insulation and mechanical support for high-voltage conductors. Engineered to meet the rigorous demands of medium-voltage power distribution networks, this bushing ensures seamless power transmission while maintaining exceptional dielectric strength and environmental stability.
Key Product Features & Advantages
Premium Epoxy Resin Construction
Made from high-grade epoxy resin with advanced curing technology, offering superior mechanical strength and resistance to thermal aging.
Delivers excellent insulation performance even under extreme temperature fluctuations (-40°C to +120°C) and high humidity conditions.
Optimized Creepage Distance Design
The corrugated silicone rubber outer surface extends the creepage distance to 289mm, effectively preventing surface flashover and ensuring safe operation in polluted or coastal environments.
Complies with IEC 62271 and GB/T 20840 standards for outdoor and indoor GIS applications.
Precision-engineered Dimensions & Compatibility
Standardized dimensions (total height: 325mm, core insulation height: 289mm) ensure easy integration with most 24kV/36kV GIS equipment.
Equipped with M12 threaded terminals at both ends for secure electrical connections, compatible with standard busbar and cable installations.
Bottom flange dimensions (96.77mm outer diameter, 71.5mm mounting pitch) allow for direct mounting on GIS tank flanges.
Long Service Life & Low Maintenance
Resistant to UV radiation, ozone, and chemical corrosion, eliminating the need for frequent cleaning or replacement.
Hermetic sealing design prevents moisture and gas leakage, maintaining the integrity of the GIS system's SF6 or clean air insulation.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 289 GIS Bushing |
| Rated Voltage | 24kV / 36kV |
| Insulation Material | Epoxy Resin + Silicone Rubber |
| Creepage Distance | 289 mm |
| Total Height | 325 mm |
| Threaded Terminals | M12 (both ends) |
| Mounting Flange OD | 96.77 mm |
| Operating Temperature | -40°C ~ +120°C |
| Standards | IEC 62271, GB/T 20840 |
Applications
The 289 GIS Bushing is widely used in:
Medium-voltage GIS substations (24kV/36kV)
Power distribution networks in urban areas, industrial zones, and coastal regions
Renewable energy projects (wind farms, solar power plants)
Railway electrification systems
Why Choose Our 289 GIS Bushing?
Customization Support: We offer tailored solutions for special voltage levels and mounting requirements.
Quality Assurance: 100% factory testing (partial discharge, dielectric strength, mechanical load) ensures zero defects.
Global Supply Chain: Fast delivery and after-sales service to clients in Asia, Europe, and the Americas.