In the realm of high-voltage transmission, the China Glass Insulator 70suspension stands as a cornerstone for grid stability. These components, primarily the 70kN (kilo-Newton) rated toughened glass discs, are engineered to withstand extreme mechanical tension and electrical stress. Unlike traditional porcelain, toughened glass offers a unique "fail-safe" property: if the dielectric is compromised, the glass shatters into small chunks, making maintenance inspections significantly more efficient through visual confirmation from the ground.
Our 70kN series, including models like the U70BLP and U70BSP, are designed in strict accordance with IEC 60305, IEC 60383, and ANSI standards. These insulators utilize high-purity raw materials—silica sand, soda ash, and feldspar—processed through advanced melting and rapid-cooling tempering phases to ensure a compressive strength that far exceeds operational requirements.
Our factory specializes in insulators for Ultra-High Voltage (UHV) and HVDC lines. By optimizing the glass composition and cap-and-pin design, we minimize ion migration, a critical factor for DC line longevity.
For coastal and industrial environments, our RTV Silicone Coated Glass Insulators provide superior hydrophobicity, preventing leakage currents and flashovers without the need for periodic manual washing.
From Standard to Fog, Aerodynamic, and Triple-Shed profiles, our 70kN range is customizable to local wind, ice, and pollution conditions (Creepage distance up to 550mm+).
Jiangxi QOCI Electric utilizes Total Oxygen Kilns and automated forming presses. This Industry 4.0 approach ensures isotopic uniformity in every glass disc, reducing the variance in dielectric strength to nearly zero.
Every 70kN suspension insulator undergoes a sequence of tests: Thermal Shock, Mechanical Load, Puncture, and Radio Interference Voltage (RIV) testing. Our laboratories are CNAS certified, ensuring global reliability.
Located in the Industrial Park of Luxi County, Jiangxi, we leverage a robust supply chain that enables fast delivery to over 50 countries. Our "Just-in-Time" manufacturing model reduces lead times for major utility projects.
The future of transmission line hardware is evolving towards "Intelligence and Sustainability." As a leading China Glass Insulator 70suspension supplier, our roadmap includes several key innovations:
We don't just supply insulators; we provide integrated solutions for global power infrastructure.
Our Triple-Shed and Aerodynamic profiles are optimized for altitudes above 3,000 meters, where air density is low, requiring longer creepage distances to prevent corona discharge.
Compact transmission line designs require high-strength 70kN and 120kN suspension strings to reduce tower footprints in densely populated urban corridors.
Supporting wind and solar farm evacuation lines, our insulators ensure that renewable energy reaches the main grid with minimal transmission losses and maximum uptime.
Navigating international regulatory frameworks is a core competency of our export division. We provide full compliance documentation for:
| Region | Standards Complied | Certification Provided |
|---|---|---|
| Europe / Middle East | IEC 60305, IEC 60383 | Type Test Reports (KEMA, CESI) |
| North America | ANSI C29.2B | IEEE Compliance Documentation |
| South America | Local Utility Specs (e.g., Eletrobras) | ISO 9001:2015 / ISO 14001 |
| Southeast Asia | JIS / Regional Standards | Custom Third-Party Inspection (SGS/Intertek) |
Furthermore, we offer Local Field Support, including installation supervision and technical seminars for utility engineers to ensure optimal product lifespan.
A: Toughened glass provides superior mechanical stability and a "visual fault" indicator. If a glass insulator fails, the shell shatters, making the fault visible from the ground without sophisticated testing equipment.
A: We utilize a vertically integrated supply chain where all raw materials are batch-tested for mineral purity and moisture content before entering the oxygen-enriched melting furnace.
A: Yes. We offer "Fog-type" and "Anti-pollution" designs (e.g., U70BLP) with extended under-ribs that significantly increase the leakage path without increasing the total string length.
A: When manufactured according to our Quality 4.0 standards, these insulators have a service life exceeding 40 to 50 years, even in harsh UV and saline environments.
A: We offer sea-worthy palletized packaging with reinforced steel banding and moisture-proof wrapping. We provide CIF, DDP, and FOB terms to suit global procurement needs.
A: Yes, our cap-and-pin designs use standard ball-and-socket connections (e.g., 16mm or 20mm) as per IEC 60120, ensuring full compatibility with existing hardware strings.
Jiangxi QOCI Electric Co. Ltd was founded in Dec. 2002, with a registered capital of 508 million Yuan. We are dedicated to serving world-class power grids with high-strength glass insulators used in low voltage, high voltage, and UHV AC/DC transmission lines.
Forming Press Workshop
High Voltage Testing Lab
Total Oxygen Kiln Facility
