High-dielectric toughened glass and porcelain suspension disk assemblies certified to international standards.
Founded in December 2002 with a registered capital of 508 million Yuan, Jiangxi QOCI Electric Co. Ltd stands as a premier Chinese manufacturer specializing in high-performance electrical insulators. Nestled in the Industrial Park of Luxi County, Pingxiang, Jiangxi Province, our state-of-the-art facility covers an expansive area of 100 mu.
We dedicate ourselves to serving the world-class power grid by actively participating in green energy transmission system construction. Our core philosophy integrates Innovation, Quality, and Service to guarantee absolute power grid reliability and safety.
Analysis of technology upgrades, material science innovations, and structural demands for high-voltage transmission networks.
Transmission lines operating at 800kV DC and 1000kV AC demand insulation components with unprecedented mechanical rating thresholds (up to 550kN) and extended creepage performance. These systems rely on toughened glass due to its high dielectric strength and zero-value self-shattering nature which simplifies maintenance.
Standard toughened glass offers superior mechanical stability, but heavy coastal fog or industrial pollutants can trigger flashovers. Factory-applied Room Temperature Vulcanizing (RTV) silicone coatings on glass combine the lifetime reliability of glass with the excellent hydrophobicity of composite materials.
With shifting climate patterns, windstorms, heavy snowfall, and dust storms present significant mechanical challenges. Structural shapes such as open-profile (desert type) and triple-shed insulators prevent ice-bridging and minimize solid pollution accumulation.
A deep breakdown of the various suspension insulator designs manufactured at our facility to meet diverse environmental demands.
Engineered with leakage distances exceeding IEC 60305 baselines, our standard profile insulators feature shallow, well-spaced ribs. This shape promotes highly efficient self-cleaning via natural wind and rainfall, making it ideal for mild to moderate environmental zones.
Featuring deeply grooved, widely-spaced under-ribs that prevent electrical arc bridging between ribs. With a high leakage distance-to-spacing ratio of approximately 3.2, it is highly effective in coastal areas exposed to conductive salt fog, as well as heavily industrial environments.
Characterized by an flat under-surface completely free of ribs, paired with an extended disc diameter. This design prevents wind-borne sand, dust, and particulate matter from settling on the bottom. It also mitigates ice-bridging issues in sub-zero regions.
Engineered with two pronounced external sheds and no under-ribs. This structure reduces solid pollution accumulation and simplifies manual cleaning if needed. It matches the creepage distance of anti-pollution units and is optimized for industrial and high-saline soils.
A high-voltage and UHV solution utilizing three distinct insulating discs on a single body. This open, multi-shed profile provides maximum creepage distance in compact spaces, delivering exceptional flashover resistance in high-altitude, highly contaminated environments.
Specifically designed to connect internal or external metal hardware with grounding conductors. By safely grounding lightning current, this profile minimizes direct surge damage to transmission lines and protects connected substation components.
Our toughened glass discs are coated in-factory with a Room Temperature Vulcanizing (RTV) silicone compound loaded with mineral fillers. This treatment increases surface hydrophobicity to suppress leakage currents, eliminating the need for periodic manual washing.
Understanding the technical specifications, mechanical testing protocols, and supply chain logistics required by international utilities.
How our customized suspension insulator strings solve regional infrastructure challenges worldwide.
Our suspension insulators are designed for high-strength application in low, high, ultra-high, and extra-high voltage AC and DC transmission systems.
From high-altitude networks exposed to sub-zero temperatures and heavy icing to desert lines subject to severe sandstorms, our specialized designs maintain grid stability. They are engineered to handle high-vibration spans, seismic conditions, and typhoon-force winds.
Inside the production plant: advanced manufacturing technology and quality-testing machinery.
Our products conform to major international standards (IEC, ANSI, BS). Our facilities maintain ISO certifications to ensure consistent quality.
We coordinate with leading infrastructure developers and energy bureaus. We also support concrete formwork projects with an annual output of 160,000 cubic meters of high-grade construction plywood.
Our operational plan for high-voltage insulation technology breakthroughs.
Deploying next-generation superhydrophobic coatings to reduce line maintenance in highly polluted coastal and industrial environments.
Scaling production of 550kN+ toughened glass units engineered for long-span river crossings and mountainous transmission routes.
R&D program focused on embedding leakage-current telemetry chips directly into the cap structure for real-time asset health mapping.
Stay updated on our global presence and recent industry reports.
As the global energy transition accelerates, the importance of electricity, renewable energy, and energy storage technologies is becoming increasingly critical. QOCI Electric showcases the latest UHV glass technology.
Read Press Release →Having withstood extreme environmental conditions including icing, high altitude, pollution, earthquakes and typhoons, China’s insulator industry offers a mature, battle-tested solution portfolio.
Read Article →On behalf of our team at Jiangxi QOCI Electric Co., Ltd, we encourage you to join us at IEEE PES T&D Conference & Exposition 2026, the powerhouse industry event showcasing grid innovation.
Register to Meet Us →Pingxiang, China - QOCI Electric, a leading global supplier of high-voltage insulation systems, officially confirmed attendance to showcase grid reconstruction solutions in Iraq.
Event Details →Technical answers to key inquiries regarding toughened glass suspension insulators.
Additional premium toughened glass insulators, double-shed profiles, and UHV accessories from our factory.
