Explore our premium, field-proven isolation products designed to meet and exceed strict IEC and ANSI standardization guidelines.
Founded in December 2002 with a registered capital of 508 million Yuan, Jiangxi QOCI Electric Co. Ltd stands as a premier modern high-voltage transmission component manufacturer. Located in the renowned Luxi Industrial Park, Pingxiang, Jiangxi Province, our facility covers a footprint of over 70,000 square meters.
We combine advanced material science with industrial automation, maintaining strict quality management protocols to ensure all insulators conform to global standards of quality and electrical engineering safety.
The U240BL standard-type suspension glass insulator represents a major milestone in high-load structural reliability, boasting a rated electromechanical failing load of 240 kN.
| Parameter / Characteristic | U240BL Technical Specification | Reference Compliance Standards |
|---|---|---|
| Electromechanical Failing Load | 240 kN | IEC 60305 / GB/T 7253 |
| Shell Diameter (D) | 280 mm / 320 mm (Custom variants available) | Standard Cap & Pin Type Dimensions |
| Nominal Spacing (H) | 146 mm / 170 mm | IEC 60305 Class Layouts |
| Minimum Creepage Distance | 320 mm to 450 mm (Anti-fog configuration options) | IEC 60815 Pollution Class Match |
| Coupling Size & Type | 24 mm Ball & Socket (IEC 60120 standard) | Interoperable with global hardware |
| Thermal Shock Resistance | Proven > 100°C Temperature differential cycling | Zero-puncture glass body safety margins |
Optimizing leakage distances and profile aerodynamics based on regional pollution, humidity, and atmospheric demands.
Characterized by leakage distances higher than IEC 60305 baseline limits. Designed with shallow and well-spaced under-ribs, facilitating rapid self-cleaning by natural wind or rain cycles.
Long, deeply spaced under-ribs prevent arc bridging across adjacent surfaces. Possessing a leakage/spacing ratio near 3.2, it is optimal for coastal salt spray and heavy smog regions.
Characterized by the complete absence of under-ribs and a wider disk diameter. This configuration limits the build-up of sand, dust, and ice bridging, making it ideal for desert installations.
Features two prominent external ribs that redirect heavy water flow. The smooth underface allows self-cleaning and facilitates periodic manual cleaning in extremely polluted zones.
Features three independent umbrella discs grouped together to maximize absolute creepage distance within a compact spacing height. A top-tier choice for ultra-high voltage (UHV) lines.
Coated with Room Temperature Vulcanization (RTV) silicone. This layer increases surface hydrophobicity, suppressing leakage current while utilizing the mechanical stability of glass cores.
By leveraging smart thermal-forming furnaces, automated press machinery, and continuous high-voltage tracking test stations, our manufacturing line operates at peak efficiency. We integrate automated raw material batching mixers with intelligent kilns to guarantee glass structural homogeneity. This mitigates microscopic imperfections, preventing spontaneous shattering and enhancing the lifespan of glass insulator configurations on live strings.
Modern electrical networks demand robust, failure-proof components. The U240BL serves as a critical structural and electrical anchor in heavy-duty transmission line suspensions, tension assemblies, and substation portals. From wind-farm integration zones with high mechanical vibration to mountain corridors subject to snow loading and ice bridging, our toughened glass series provides the mechanical margin needed to keep the grid stable.
We are actively researching the integration of real-time monitoring sensors directly within string assemblies. As power networks transition toward smart infrastructure, predicting failure and measuring leakage current in real-time is crucial. Through advanced R&D in RTV chemistry and zinc-bushing formulations, we guarantee our U240BL family will continue to meet the evolving demands of HVAC and HVDC networks worldwide.
Our Luxi manufacturing plant uses state-of-the-art oxygen-combustion kilns, mechanical testing machinery, and maintains ISO-compliant quality certification.
Precision hydraulic molding ensures consistent glass disc thickness and eliminates internal mechanical stress.
Homogeneous silica raw material batching guarantees high optical and mechanical purity across all batches.
Every single disk undergoes testing under power-frequency voltage to ensure zero electrical punctures.
High-efficiency melting technology reduces micro-defects in glass structures, optimizing structural integrity.
ISO Quality System Certificate
Authorized Type Test Report
Environmental Standard Compliance
Utility Access Certification
Our line insulators undergo rigorous testing to ensure dependable performance in extreme climates and challenging terrain.
Collaborating with global power grid operators and raw material suppliers to ensure reliable energy delivery.
Keep up with our engineering conferences, upcoming global exhibitions, and insights into insulator manufacturing technology.
Join Jiangxi QOCI Electric as we discuss high-voltage insulation stability and grid resilient upgrades at Enlit Africa, exploring green energy grid developments.
Discussing the deployment of anti-pollution toughened glass insulators for overhead lines. Meet our technical specialists on-site at Booth 2026.
Highlighting the performance of standard and aerodynamic open-profile glass insulators in dry, desert, sandstorm-prone Middle Eastern regions.
Get answers to common queries regarding U240BL specifications, testing standards, and logistics.
Explore our high-performance glass isolator variants, configured for transmission, distribution, and substation applications.
