FXB-33-70CT Composite Insulator | 33kV Anti-Pollution

In modern power transmission lines, the performance of insulators directly impacts grid operation reliability and stability, especially in harsh environments prone to heavy pollution, humidity, or coastal conditions. Weisho Electric proudly introduces its high-performance FXB-33-70CT Composite Long Rod Insulator. This product is specifically designed for 33kV and above voltage level transmission lines, offering an excellent solution to replace traditional porcelain insulators with its outstanding anti-pollution flashover, aging resistance, and mechanical strength.

The FXB-33-70CT composite insulator integrates the advantages of a fiberglass reinforced polymer (FRP) core rod, silicone rubber sheds, and metal end fittings. It possesses superior properties unmatched by traditional insulators. Not only is it lightweight and easy to install and maintain, but it also provides exceptional insulation performance in extreme environments. With Weisho Electric's 12 years of profound accumulation and stringent quality control in high-voltage insulation products, we ensure that every FXB-33-70CT provides a long-term, reliable safety barrier for your transmission lines.

FXB-33-70CT Composite Insulator Product Analysis & Performance Testing [Video]Watch this video to gain an in-depth understanding of the FXB-33-70CT composite insulator's structural features, production process, and witness its anti-pollution flashover performance testing in simulated polluted environments, intuitively experiencing its exceptional quality.

Core Advantages & Features: Surpassing Tradition, Leading Composite Insulation Technology

Weisho Electric's FXB-33-70CT Composite Long Rod Insulator brings multiple core advantages to your high-voltage transmission lines, thanks to its innovative design and superior materials:

1. Outstanding Anti-Pollution Flashover Performance:

Technical Detail: Utilizes silicone rubber shed material with excellent hydrophobicity, featuring superior self-cleaning capabilities where rainwater forms beads and rolls off the surface, preventing the formation of continuous water films. The special shed structure design (e.g., alternating large and small sheds) effectively increases the creepage distance, enhancing anti-pollution flashover capability.
Key Benefit: Significantly improves the insulator's flashover voltage in heavily polluted, salt-fog, and high-humidity environments, effectively preventing pollution flashover incidents and greatly enhancing the operational reliability of transmission lines, reducing maintenance and cleaning frequency.

2. Excellent Aging and Corrosion Resistance:

Technical Detail: The silicone rubber shed material possesses excellent resistance to UV radiation, ozone, and acid rain erosion, making it resistant to aging and cracking during long-term outdoor exposure. The FRP core rod uses corrosion-resistant epoxy resin, firmly bonded to the shed interface to effectively prevent moisture ingress into the core rod.
Key Benefit: Ensures the insulator's long-term stable operation under various complex climatic conditions, significantly extending the product's service life and reducing life-cycle costs.

3. High Strength & Lightweight Design:

Technical Detail: Internally utilizes a high-strength fiberglass reinforced polymer (FRP) core rod as the load-bearing component, with tensile strength far superior to porcelain insulators. Simultaneously, the overall weight of the composite insulator is only 1/7 to 1/10 of an equivalent porcelain insulator.
Key Benefit: Significantly reduces tower load and installation difficulty, lowering construction costs for towers and foundations. The lightweight nature makes transportation, handling, and high-altitude work safer and more efficient, shortening construction periods.

4. Excellent Anti-Seismic & Anti-Brittle Fracture Performance:

Technical Detail: Composite materials exhibit excellent elasticity and toughness, effectively absorbing and dispersing mechanical stress, making them resistant to brittle fracture during natural disasters like earthquakes and strong winds.
Key Benefit: Greatly enhances the transmission line's disaster resistance in extreme natural conditions, reducing line trip accidents caused by insulator damage, and improving the grid's resilience.

5. Diverse Specifications to Meet Various Needs:

Advantage: Weisho Electric's FXB-33-70CT offers a variety of effective connection length options, including 900mm, 1000mm, and 1200mm, among others, to adapt to different installation distances and insulation coordination requirements.
Key Benefit: Provides flexible matching solutions for transmission line design and renovation, ensuring optimal electrical clearance and mechanical connection.

Applications: Driving Safe and Efficient Power Transmission

The Weisho Electric FXB-33-70CT Composite Long Rod Insulator is widely used in various 33kV and above voltage level power transmission and distribution lines, particularly suitable for the following demanding environments:

Heavily Polluted Areas: Such as industrial zones, chemical plant vicinities, and sandy regions, where its excellent anti-pollution flashover performance effectively counters conductive contamination.
Coastal and Salt-Fog Areas: The hydrophobicity of silicone rubber material ensures excellent performance in salt-fog environments, reducing flashover caused by salt accumulation.
High Altitude and Strong UV Regions: Superior UV resistance and anti-aging properties ensure long-term operational reliability.
New Construction and Renovation of Transmission Lines: The lightweight design can reduce tower load, making it suitable for capacity upgrades of old lines and construction of new lines, shortening construction periods.
Earthquake-Prone Areas: Excellent seismic performance enhances the line's resilience and disaster resistance.

Technical Specifications & Standard Compliance

The Weisho Electric FXB-33-70CT Composite Long Rod Insulator strictly adheres to international and domestic standards, ensuring its excellent performance and reliability.

Environmental Conditions

No.	Item	Value
1	Extreme Max. Air Temperature (°C)	40
2	Extreme Min. Air Temperature (°C)	-25
3	Altitude (m)	＜1000 (Customization needed for higher altitudes)
4	Seismic Intensity (China 12-grade standard)	8
5	Basic Seismic Acceleration Value	0.2
6	Pollution Level	Class IV and above
7	Creepage Distance	≥ 25mm/kV (according to pollution level)

Main Electrical & Mechanical Parameters (FXB-33-70CT)

Parameter	Value/Description
General Parameters
Rated Voltage	33kV (for 35kV systems)
Rated Mechanical Tensile Load (RTL)	70kN
Specification Options
Effective Connection Length (mm)	900mm, 1000mm, 1200mm (or other custom lengths)
Electrical Performance
50Hz Power Freq. Withstand Voltage (Dry)	≥ 100kV
50Hz Power Freq. Withstand Voltage (Wet)	≥ 90kV
Lightning Impulse Withstand Voltage (Peak)	≥ 200kV
Mechanical Performance
Mechanical Breaking Load (MBL)	≥ 70kN
Material & Structure
Shed Material	High-performance silicone rubber
Core Rod Material	Fiberglass Reinforced Polymer (FRP)
End Fitting Material	Hot-dip galvanized steel or aluminum alloy
Structural Features	Integral injection molding/vulcanization, seamless interface bonding

Quality Assurance & Authoritative Certifications

At Weisho Electric, our commitment to product quality is our cornerstone. The FXB-33-70CT Composite Long Rod Insulator undergoes rigorous processes from raw material selection, core rod manufacturing, shed vulcanization, to end fitting crimping, strictly adhering to international quality management systems and industry standards.

ISO 9001 Quality Management System Certification: Ensures that every stage, from raw material procurement to the production process, meets the highest quality standards.
IEC 61109 Standard Compliance: Our product design, manufacturing, and testing strictly conform to the latest International Electrotechnical Commission standards for composite insulators, ensuring global compatibility and reliability.
China Compulsory Certification (CCC)
CE Certification (Conformité Européenne)

Every Weisho Electric FXB-33-70CT composite insulator undergoes stringent mechanical load tests, power frequency withstand voltage tests, lightning impulse tests, and hydrophobicity tests before leaving the factory, ensuring reliable and safe insulation under all operating conditions.

Installation & Maintenance: Simple, Efficient, Ensuring Long-Term Operation

The Weisho Electric FXB-33-70CT Composite Long Rod Insulator, with its lightweight and pre-assembled characteristics, significantly simplifies on-site installation processes. Its non-brittle nature, compared to traditional porcelain insulators, also reduces losses during transportation and installation. The excellent self-cleaning ability and aging resistance of the silicone rubber sheds greatly reduce the frequency of routine maintenance, eliminating the need for frequent cleaning and effectively minimizing line outage times and operation and maintenance costs.

Customer Testimonials: Professional, Trustworthy

Hear what our global customers have to say about Weisho Electric's FXB-33-70CT Composite Long Rod Insulator:

"We selected Weisho Electric's FXB-33-70CT composite insulators for a coastal transmission line upgrade project in Florida, USA. Its outstanding anti-salt fog performance and lightweight design significantly accelerated construction progress and greatly enhanced the line's operational reliability in harsh marine climates."

— Michael S. Green, Project Engineer, US Power Utility

"In the rural grid modernization project in Hesse, Germany, Weisho Electric's FXB-33-70CT performed exceptionally. Especially in areas with frequent thunderstorms and forest cover, its strong anti-pollution flashover capability ensured power supply continuity, reducing unexpected trips. We are highly satisfied with its quality and long lifespan."

— Anna Behrmann, Maintenance Supervisor, German Grid Company

"Weisho Electric's composite long rod insulators provided a perfect solution for our transmission line construction in the Andes Mountains of Chile at high altitudes. Its excellent UV and low-temperature resistance, along with its lightweight nature, made installation possible in high-altitude, hard-to-access areas, significantly reducing project risks and costs."

— Marco Antonio Lopez, Project Director, Chilean Energy Projects

Expert Insight: Content Authored by Industry Professional

The detailed content on this page regarding the FXB-33-70CT Composite Long Rod Insulator is proudly presented by Engineer Thor from Weisho Electric.

Mr. Thor is a key technical backbone at Weisho Electric Co., Ltd., a prominent Chinese foreign trade manufacturer dedicated to serving clients across Europe, the Americas, the Middle East, Belt and Road Initiative countries, and globally. With 12 years of invaluable industry experience, he specializes in the R&D, design, and application of high-voltage insulation products for power transmission equipment, possessing a profound understanding and practical expertise in product technology, industry standards, and customer requirements.

Should you have any inquiries about our FXB-33-70CT Composite Long Rod Insulator or require professional, customized solutions, please feel free to contact Thor:

Phone: +86-577-62788197
WhatsApp: +86 159 5777 0984
Email: [email protected]

Upgrade Your Transmission Lines Today with Weisho Electric's FXB-33-70CT Composite Long Rod Insulator!

Contact our expert team for a personalized consultation, detailed technical specifications, or to request a comprehensive quote. Let us help you build safe, efficient, and reliable power transmission lines for your project!