Explore our highly engineered glass and porcelain solutions designed to withstand extreme mechanical stress and environmental contamination.
Jiangxi QOCI Electric Co. Ltd was founded in Dec. 2002, with registered capital of 508 million Yuan. The Corporation is located at Industrial Park, Luxi County, Pingxiang, Jiangxi Province, covering an area of 100 mu. As a modern, technology-driven enterprise, QOCI Electric specializes in high-strength glass and porcelain insulation technology to guarantee grid reliability.
Active participation in green energy grid construction.
Strict QA responsibility is the guarantee of our products.
A Technical Deep Dive into Modern Grid Insulation, Mechanical Load Optimization, and Pollution Performance.
Station and post porcelain insulators must handle high mechanical loads. In sub-station systems, cantilever strength is vital. The core design uses high-density aluminous porcelain body (C-120 or C-130 grade according to IEC 60672) to resist bending stress, wind loads, and short-circuit dynamics. Solid-core designs eliminate internal voids, avoiding electrical puncture risks under high-stress fields.
The design of the insulator profile directly affects its reliability under contaminated conditions. Standard profiles work well in normal environments, while aerodynamic and double-shed configurations prevent conductive layer formation in salty air or industrial dust. Standardizing to IEC 60305, our profiles offer higher leak distances per unit height, reducing leakage currents and risks of flashovers.
For high-pollution environments, Room Temperature Vulcanization (RTV) silicone coatings on tempered glass and porcelain offer a long-term solution. The coating is hydrophobic, preventing continuous water films. Even when dust accumulates, the silicone fluid transfers its hydrophobicity to the pollutant layer, maintaining electrical resistance and reducing maintenance costs.
Ensuring system safety and reliable operation through international standards conformity and certifications.
Our insulators support substations, distribution grids, and long-range transmission lines (AC & DC). Their high mechanical strength and thermal stability make them reliable for renewable energy integration, connecting high-latitude wind farms or desert solar projects to national grids.
Production follows ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 management systems. Products meet global standards, including ANSI C29.9, IEC 60273, and IEC 60383. Type test approvals from accredited laboratories confirm our products withstand high voltage, mechanical shear, and thermal shock.
From coastal saline areas to dusty industrial zones, QOCI insulators perform well globally. Our range features custom metal fittings (e.g., cast iron, hot-dip galvanized steel) to withstand localized seismic loads and extreme cold down to -40°C.
Inside QOCI Electric's automated manufacturing facility, where material science meets engineering precision.
Meeting the demands of next-generation grids with smart insulation and high-performance materials.
We are researching clean, lead-free glazes and energy-efficient firing systems to reduce carbon emissions during production, aligning with global green energy transition targets.
Future grids require active monitoring. We are developing insulators integrated with IoT temperature and leakage current sensors to report structural health and contamination levels in real time, supporting predictive maintenance.
With global demand for long-distance power transmission rising, QOCI is developing insulators designed for voltages above 1000kV, featuring high mechanical strength and electrical insulation properties.
Expert answers to common engineering, selection, and maintenance questions.
Browse our full range of distribution and transmission line components, compliant with international standards.
