The U70BS represents the pinnacle of 70kN suspension-type toughened glass insulation technology. Designed strictly according to IEC 60305, IEC 60383, and IEC 60120 standards, these units are the backbone of medium to high voltage transmission lines (typically 10kV to 220kV). As the global energy demand shifts towards renewable integration and ultra-high voltage (UHV) infrastructure, the U70BS serves as a critical component in ensuring grid reliability and minimizing line losses.
Unlike traditional porcelain insulators, toughened glass offers a "Self-Breaking" property. When an internal defect or external mechanical trauma exceeds the safety margin, the glass component shatters into small, non-cutting fragments. This "Zero-Value" characteristic allows maintenance crews to identify faulty units through simple visual inspections without the need for complex climbing tests or electronic monitoring. Our U70BS factory utilizes advanced total-oxygen kilns to ensure the purity of the glass melt, significantly reducing the spontaneous breakage rate to under 0.01%.
Superior puncture resistance compared to porcelain, ensuring safety under extreme over-voltage conditions.
The smooth, hydrophobic surface of our U70BS units allows wind and rain to naturally wash away dust and pollutants.
Forged steel pins and high-strength malleable cast iron caps provide a safety factor exceeding standard IEC requirements.
Founded in December 2002 with a registered capital of 508 million Yuan, Jiangxi QOCI Electric is a premier Chinese manufacturer specializing in high-voltage power components. Located in the Industrial Park of Luxi County, Pingxiang—a global hub for electrical ceramic and glass—our facility covers 100 mu (70,000 m²).
We serve the world-class power grid with dedication, actively participating in the construction of green energy pathways. Our core philosophy is: Innovation, Quality, and Service. Responsibility is the guarantee of our quality, ensuring the safety of the global electric power industry.
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Designed with shallow and well-spaced small ribs, optimizing self-cleaning by wind or rain. Leakage distances exceed IEC 60305 values for superior performance.
Features long, widely-spaced under-ribs to avoid arc bridging. Effective in coastal (salt fog) and industrial areas requiring high specific leakage distance.
Room Temperature Vulcanization (RTV) coating enhances hydrophobicity. Minimizes leakage currents and maintenance costs in extreme pollution zones.
Three layers of discs provide maximum creepage distance. Ideal for Ultra-High Voltage (UHV) lines in high-altitude and humid environments.
China's insulator industry, specifically centered in Jiangxi Province, has matured into a global powerhouse. As a U70BS manufacturer, we leverage a vertical supply chain—from high-grade silica sand sourcing to automated forging of metal fittings. This allows us to provide the "Best Price" without compromising the "World-Class Service" required by state-owned grids and international EPC contractors.
| Specification | U70BS Standard Value | QOCI Advantage |
|---|---|---|
| Mechanical Failing Load | 70 kN | Tested up to 75-80 kN safety margin |
| Glass Component Diameter | 255 mm | High-precision mold consistency |
| Standard Spacing | 146 / 127 mm | Optimized for tower clearance |
| Creepage Distance | 295 - 450 mm | Customizable based on pollution profile |
Engineered for high-altitude thin air and sub-zero temperatures.
Crucial for AC/DC transmission networks from 10kV to UHV levels.
Ensures zero-puncture performance for aging line refurbishment.
Heavy pollution and saline soil resistant designs for coastal refineries.
Having withstood extreme environmental conditions including icing, high altitude, pollution, earthquakes and typhoons, China’s insulator industry has become a global standard bearer.
QOCI Electric showcased the latest UHV glass insulation units at the powerhouse energy expo, highlighting new aerodynamic profiles for desert regions.
With proper installation and within rated load limits, our toughened glass insulators are designed for a service life of over 40-50 years, often outlasting the transmission towers themselves.
Every unit undergoes a series of routine tests: 100% mechanical routine test, thermal shock test, and a power frequency voltage test. We also perform sample puncture and steep-front wave tests per batch.
Yes, we can apply silicone coatings with specific thicknesses (standard is 0.5mm) to meet the pollution severity (SPS) of your specific region.
We are situated in the center of China's electrical ceramic cluster, meaning we have immediate access to specialized logistics partners who understand the handling of fragile, high-value glass components, ensuring zero damage during transit.
