U160BSP 160kN 20R Fog Type Toughened Glass Insulator

| Company Profile

Walking through the manufacturing floor of Nanjing Rainbow Electric Co., Ltd. (NJREC), one immediately notices the steady hum of precision machinery and the rigorous attention to detail at every assembly station. As a prominent Chinese manufacturer and supplier of electrical insulators and transformer bushings, NJREC is dedicated to engineering components that form the backbone of global power infrastructure. We undertake and offer highly dependable electrical insulators designed specifically for demanding transmission lines and critical substations. Beyond individual components, we provide comprehensive, one-stop solutions for distribution and power transformers, pad-mounted transformers, and specialized wall-mounted applications. Every product leaving our facility represents our unwavering commitment to grid stability, ensuring that energy flows safely and continuously across vast distances and challenging terrains.

|  Product Introduction

✔  Superior Pollution Resistance  – Engineered with an optimized aerodynamic profile for  medium to heavily polluted areas . The extremely smooth, non-porous glass surface prevents the accumulation of industrial dust and coastal salt, significantly reducing maintenance needs compared to standard insulators.
✔  Self-Cleaning Effect  – The precisely angled sheds promote rapid rainwater runoff, actively washing away surface contaminants, minimizing dirt accumulation, and sustaining long-term electrical performance even during extended dry spells.
✔  Zero Value Self-Breaking Detection  – In the rare event of internal failure, damaged units  automatically shatter into visible fragments. This distinct visual cue allows ground crews to easily identify compromised units without climbing towers or using manual testing instruments—drastically saving inspection costs and labor hours.
✔  High Mechanical Strength  – Forged from  tempered glass with a heavy-duty steel-reinforced structure , ensuring exceptional physical durability against extreme weather events, heavy ice loading, and constant mechanical tension.
✔  Extreme Environment Adaptability  – Formulated to withstand severe temperature fluctuations from -40°C to +60°C. The glass dielectric material remains impervious to UV degradation and acidic precipitation, maintaining absolute insulation integrity in deserts, coastal zones, or heavy industrial sectors.
✔  Long Service Life & Lifecycle Economic Benefits  – Accelerated aging testing and field data demonstrate  35+ years of stable performance  with no significant aging or structural degradation, offering an essentially maintenance-free lifespan that lowers the total cost of ownership for grid operators.

Nanjing Rainbow Electric Co. is committed to delivering insulators that not only meet strict technical requirements but also actively enhance the safety, visual inspectability, and overall transmission efficiency of your power grid systems.

|  Data Sheet

| Support Custom

Every power grid project presents unique geographical and electrical demands. Our engineering team provides specialized selection guidance based on your site's specific Equivalent Salt Deposit Density (ESDD) requirements, ensuring optimal anti-pollution flashover performance. Beyond standard configurations, we offer comprehensive OEM and ODM capabilities. Whether your infrastructure requires non-standard voltage ratings, specific creepage distance adjustments, or specialized structural modifications, our technical support team collaborates closely with project managers to deliver precisely tailored insulator solutions that integrate flawlessly into your existing network architecture.

| Factory Pictures

The creation of our toughened glass insulators relies on a strictly controlled, fully automated manufacturing process. Inside our facility, the intense heat of the tempering furnaces ensures the glass achieves optimal internal stress distribution, granting it superior mechanical resilience. Following the thermal processes, precision cement assembly firmly bonds the heavy-duty metal fittings to the glass shell. The subtle smell of industrial cement curing fills the assembly zone as each unit sets perfectly into place. Before leaving the line, every single insulator undergoes 100% visual inspection and rigorous thermomechanical testing. This unwavering core manufacturing process guarantees that the Glass Insulator is a highly reliable and versatile product, suitable for a wide range of applications in the electrical power industry, providing essential insulation and mechanical support for safe and efficient power transmission and distribution.

| Product Applications

1. High - Voltage Power Transmission

Engineered for supporting heavy conductors across vast distances in high-voltage systems, ensuring absolute and reliable insulation. Our units consistently surpass competing insulators that may struggle to maintain insulation integrity during sudden voltage spikes, effectively safeguarding overall power transmission efficiency.

2. Electrical Installation

Ideal for complex driving and electrical setups, offering heavy-duty mechanical load support. These components outshine alternatives that could lack the necessary load-bearing capacity, ensuring highly stable electrical installations across diverse projects, ranging from sprawling industrial plants to dense residential network expansions.

3. Power Transmission Line Support

Ensure long-term stability and endurance against intense vertical and horizontal tension loads. Unlike some competitors’ products that are prone to structural deformation or catastrophic failure under heavy ice or wind loads, these toughened glass insulators keep power lines structurally sound, significantly minimizing emergency maintenance needs.

4. Versatile Compatibility & Hardware Adaptation

Featuring standardized cap-and-pin coupling dimensions, these units are suitable for integration with porcelain, pin-type, spool, suspension, cross-arms, rod, and tension insulators in overhead lines. They perfectly accommodate conventional ball-and-socket or clevis-and-tongue hardware fittings. This provides much more flexibility than competitors with limited compatibility, greatly simplifying rapid grid upgrade and expansion projects.

Choose Nanjing Rainbow Electric Co. for reliable, durable, and cost-effective solutions that strictly comply with international standards, perfectly meeting the complex needs of expanding modern infrastructures.

| Products Packages

Protecting heavy, structurally critical components during international transit requires industrial-grade packaging solutions. We secure each batch of our toughened glass insulators within heavily reinforced, shock-absorbing wooden crates. The distinct smell of fresh timber and protective industrial wax accompanies each shipment, signifying a custom-fitted inner lining designed specifically to isolate the glass shells from impact vibrations. This meticulous export-level packaging ensures a zero-breakage rate during turbulent long-haul sea freight and complex cross-border logistics, guaranteeing that your project materials arrive in pristine condition and strictly on schedule.

| Testing Quality

Reliability in critical grid infrastructure demands uncompromising verification. Each production batch undergoes rigorous evaluation to strictly comply with IEC, ANSI, and other major international electrotechnical standards. Our quality control protocol includes destructive mechanical failing load tests, steep-front impulse voltage tests, and intense thermal shock cycles. We provide comprehensive factory testing reports and maintain strict batch traceability for every single unit shipped. This exhaustive documentation and physical verification process ensures that our insulators face zero barriers for entry into global power grid projects, delivering proven safety and electrical stability.

| Our Customers

Earning the trust of global grid operators and utility contractors requires consistent physical performance and transparent engineering communication. Our electrical components currently support critical infrastructure projects across multiple continents, enduring diverse climates from arid deserts to humid coastal regions. By prioritizing long-term operational value, strict adherence to international standards, and responsive technical support, we have forged enduring partnerships with leading energy authorities worldwide, ensuring their networks remain powered safely and efficiently year after year.