Industrial Grade Toughened Glass and Porcelain Insulators for High-Voltage Transmission
In the evolving landscape of global energy infrastructure, the Ctv Xk U70b Chain Isolator (often referred to within technical specifications as the U70B/U70BLP series) represents the pinnacle of mechanical endurance and dielectric stability. As a leading Wholesale Ctv Xk U70b Chain Isolator Factory, we understand that modern power grids require more than just insulation; they require a "Zero-Maintenance" philosophy. The "Xk" designation specifically refers to advanced surface treatments and specialized glass formulations designed to resist corrosive pollutants in industrial zones and saline humidity in coastal regions.
With a failing load of 70kN, our U70b series provides a high safety factor for overhead lines subject to heavy wind loading and ice accumulation.
High dielectric strength ensures that even under transient overvoltages or lightning strikes, the "Chain" remains intact, preventing catastrophic grid failure.
Optimized shed geometry facilitates natural self-cleaning by wind and rain, critical for "Anti-Pollution" type U70BLP models.
A Global Powerhouse in Electrical Insulation
Founded in December 2002 with a registered capital of 508 million Yuan, Jiangxi QOCI Electric Co. Ltd has grown into a premier destination for global utilities seeking high-performance insulators. Located in the Industrial Park of Luxi County, Pingxiang, our facility covers 70,000 m² of state-of-the-art production space.
We are dedicated to serving world-class power grids, actively participating in the construction of green energy pathways. For us, responsibility is the ultimate guarantee of quality.
Navigating the complex regulatory environments of the USA, EU, and Middle East requires a factory that speaks the language of compliance. Our Ctv Xk U70b Chain Isolators are fully compliant with IEC 60305, IEC 60383, and ANSI C29 standards. We provide localized support through technical documentation tailored to regional grid operators (such as SEC in Saudi Arabia, DEWA in Dubai, or National Grid in Europe).
Dimensional and electrical characteristics for cap and pin insulators.
North American standards for wet-process porcelain and glass insulators.
Total quality management from raw material silica selection to final shipment.
Purchasing from a Chain Isolator Factory in China offers more than just cost savings. It offers Supply Chain Resilience. At Jiangxi QOCI, we leverage our proximity to high-purity quartz mines and specialized steel hardware manufacturers in the Pingxiang industrial cluster. This "Cluster Effect" allows us to offer:
Engineered for specific environmental challenges
Leakage distance exceeds IEC 60305 values. Shallow, well-spaced ribs allow for effective self-cleaning by wind or rain.
Characterized by long, widely-spaced under-ribs to avoid arc bridging. Effective in coastal areas (Salt fog).
Absence of under-ribs prevents sand and dust accumulation. Ideal for suspension applications in arid regions.
Increases hydrophobicity, minimizing leaking currents and maintenance costs in heavily polluted industrial areas.
Key for UHV lines. Three layers of umbrella discs provide exceptional creepage distance and flashover resistance.
Two external ribs reduce pollution build-up and facilitate manual cleaning where wind self-cleaning is insufficient.
Deployment in high-altitude Andean mountains or the humid tropical forests of Southeast Asia, where glass insulators provide better visual inspection than polymer.
Our U240 and U420 series are specifically designed for the massive electrical loads of 800kV and 1100kV DC/AC lines.
The Xk series anti-corrosion coating prevents the galvanic corrosion of the cap and pin hardware in high-salinity air.
Quality control is embedded in every step. From the Production Raw Materials selection to the High Voltage Test, every U70b unit undergoes rigorous thermal shock tests and mechanical load tests before leaving the factory. Our specialized Mixer ensures the exact chemical composition of the glass to maintain consistent dielectric properties.
The industry is moving towards Smart Grids and Sustainability (ESG). Toughened glass is 100% recyclable, making it the preferred choice for green energy projects compared to composite insulators. Furthermore, the development of "Double-Shed" and "Triple-Shed" profiles (like our U70BLD) allows for shorter string lengths without compromising on creepage distance, reducing the overall height of transmission towers and lowering structural costs.
The U70b is the standard profile suitable for clean to moderately polluted areas. The U70BLP is the "Anti-Pollution" or "Fog Type" version, featuring deeper under-ribs that increase the creepage distance (leakage distance), making it suitable for coastal or industrial environments with heavy salt or dust deposits.
Toughened glass offers "spontaneous breakage" as a diagnostic feature. Unlike porcelain, which can develop internal hidden cracks (punctures) that require expensive testing to find, a failed glass insulator disc will visibly shatter, making maintenance inspections faster and more reliable.
We implement a 100% routine test policy for all structural and electrical parameters. Our annual output of 39,000 tons is backed by automated forming presses and computerized kiln monitoring to ensure batch-to-batch consistency for global utilities.
Yes, we offer Room Temperature Vulcanization (RTV) silicone coatings (the Xk series) that can be applied to any of our glass profiles. This creates a hydrophobic surface that prevents the formation of continuous conductive water films in high-humidity environments.
Depending on order volume, typical production lead times range from 15-30 days. We are located near major logistics hubs, ensuring efficient container loading and transport to Shanghai or Ningbo ports for global export.
Reliable components for every segment of the power grid
