In the evolving landscape of global power transmission, the P-33-Y standard and associated toughened glass insulators represent the pinnacle of reliability for high-voltage (HV) and ultra-high-voltage (UHV) lines. As nations transition toward green energy, the demand for robust grid infrastructure has skyrocketed.
From the deserts of the Middle East to the saline coasts of Southeast Asia, these components are the silent guardians of energy stability. Our factory focuses on "Information Gain" by providing not just hardware, but data-backed performance metrics that exceed IEC 60305 standards.
Jiangxi QOCI Electric Co. Ltd was founded in Dec. 2002, with a registered capital of 508 million Yuan. We are the backbone of the Chinese manufacturing advantage in the power sector.
Plant Area (m²)
Annual Output (Tons)
Engineering Technicians
Invention Patents
Serve the world-class power grid with dedication. Actively participate in the construction of green energy infrastructure through advanced material science.
Responsibility is the guarantee of quality. Our toughened glass undergoes rigorous thermal shock and mechanical load tests to ensure zero-defect delivery.
High leakage distance exceeding IEC 60305. Features shallow ribs for natural self-cleaning via wind and rain.
Widely-spaced under-ribs to prevent arc bridging. Ideal for salt-fog coastal regions and heavy industrial pollution.
Combines glass mechanical strength with silicone hydrophobicity. Drastically reduces cleaning maintenance costs.
Key component for UHV lines. Three layers of umbrella discs provide exceptional creepage distance for harsh environments.
Our "Open Profile" designs eliminate under-ribs where sand accumulates. This prevents conductive layer build-up during rare rain events in arid zones like North Africa and the Middle East.
In zones with chemical particulates, our "External Shed" profiles facilitate manual and natural cleaning, maintaining high flashover voltages despite heavy sedimentation.
Low air pressure reduces insulation effectiveness. Our high-kN suspension insulators are specifically optimized for the thin air of the Himalayas and Andes mountains.
QOCI utilizes the latest Total Oxygen Kiln technology, which ensures a more uniform melt of the glass batch. This results in higher transparency and fewer internal inclusions, which are the primary cause of spontaneous breakage in glass insulators.
Toughened glass offers several advantages: transparent inspection (cracks are visible immediately), lighter weight for easier installation, and the "spontaneous shattering" property where a failed unit retains mechanical strength but becomes visually obvious, simplifying grid maintenance.
We hold ISO 9001, 14001, and 45001 certifications. Our 53+ engineering technicians and 26+ patents prove our Expertise and Authoritativeness. With over 20 years in the industry, our Reliability is backed by millions of units in operation globally.
Yes. Our factory specializes in modifying profile geometry (Double-Shed, Triple-Shed) to meet specific creepage-to-spacing ratios required by international utilities and high-pollution zone tenders.
With an annual output of 39,000 tons, we offer some of the fastest turnaround times in China. Standard configurations like U70 and U120 typically have a 4-6 week lead time for large-scale container orders.
QOCI Electric regularly participates in global energy summits, showcasing our latest 220kV and 500kV toughened glass solutions to international grid operators.
A recent press conference highlighted China's mature portfolio in high-altitude and anti-seismic insulator designs, proving our global leadership.
Join us at upcoming expositions where we will unveil our new smart-monitoring integrated insulators for digitizing overhead lines.
