Discover our premium Air Insulation Series for 12kV-40.5kV switchgear. Featuring Embedded Poles, Contact Boxes, and Sensors manufactured with APG technology for superior dielectric strength.
In the critical infrastructure of power transmission and distribution, insulation components are not just accessories—they are the foundation of system safety and stability. Our Air Insulation Series is engineered specifically for 12kV, 24kV, and 40.5kV Air Insulated Switchgear (AIS). Utilizing advanced APG (Automatic Pressure Gelation) technology and premium epoxy resin, we deliver components that withstand harsh electrical environments with superior dielectric strength and mechanical durability. From VS1 Insulating Cylinders to precision Sensor Insulators, every product is tested to meet strict IEC standards, ensuring low partial discharge and maximum reliability for your electrical projects.
Combined functionality of structural support and voltage detection. Our sensor insulators feature built-in high-sensitivity capacitive dividers to provide real-time feedback on live status, ensuring operator safety alongside reliable insulation.
The ultimate protection for vacuum interrupters. By embedding the vacuum bottle in epoxy resin, our poles are immune to dust, moisture, and condensation, significantly extending the maintenance-free life of circuit breakers in challenging environments.
The structural backbone for VS1 vacuum circuit breakers. Designed with optimized electric field distribution, these cylinders prevent surface flashover while providing the high mechanical strength needed to withstand frequent switching operations.
Critical junction points for busbar connections. Our contact boxes utilize field-grading shielding to minimize partial discharge and ensure stable contact pressure, facilitating safe current transfer between the static contact and the breaker truck.
Safe passage for high-voltage conductors. Our wall bushings provide robust isolation between switchgear compartments, featuring excellent anti-pollution properties and thermal stability for heavy-current busbar applications.
Completing the insulation system. From operating rods to insulating plates, our accessories are manufactured with the same rigorous standards as our core components, ensuring no weak links in your switchgear’s insulation chain.
Ready to proceed? Please fill out the inquiry form on the right to share your project requirements. Our team will respond shortly with technical datasheets, CAD drawings, or a competitive price list.👉
Our Air Insulation Series components are manufactured using the APG process to minimize internal voids. Strictly following IEC 60694 and GB/T 11022 standards, we ensure the partial discharge is ≤ 10pC (and often lower for customized premium lines) at the rated voltage, ensuring long-term reliability without insulation breakdown.
Yes. Our standard product line (including Contact Boxes, Wall Bushings, and Insulating Cylinders) is designed to perfectly fit mainstream 12kV, 24kV, and 40.5kV air-insulated switchgear cabinets (such as KYN28A-12, KYN61) and vacuum circuit breakers like VS1 (ZN63) and VD4.
Automatic Pressure Gelation (APG) is superior for mass production efficiency and quality stability. Compared to traditional vacuum casting, APG significantly increases the density of the epoxy resin and improves the mechanical strength and weather resistance, making the components more resistant to cracking under thermal stress.
Yes, we specialize in OEM/ODM solutions. If your project requires special dimensions or unique creepage distances, our engineering team can design and manufacture custom molds. Please provide us with your 2D/3D drawings, and we can deliver samples typically within 15-20 days after mold confirmation.
For standard items like VS1 cylinders and contact boxes, we maintain a stock for quick dispatch (3-5 days). For bulk orders (e.g., 500+ units) or specific resin colors, the production cycle is typically 7-14 days. Custom molded parts depend on the mold development schedule.
