 |
18kV Overhead Transmission Line Post Composite Insulator is a critical component designed to provide reliable mechanical support and electrical isolation for overhead power lines, distribution networks and substations. As a leading manufacturer of high-voltage insulation solutions, HAIVO exclusively uses premium silicone rubber as the primary insulation material for all our composite insulators, delivering superior performance compared to traditional porcelain and glass alternatives.
Our post composite insulators are manufactured in strict compliance with IEC 62217:2005, IEC 62231:2006, ANSI and GB international standards. In addition to the 18kV line post insulator featured here, we offer a comprehensive range of composite insulators with voltage ratings up to 252kV, including pin insulators, strain insulators, suspension insulators, long rod insulators and railway insulators to meet diverse power system requirements.
Our insulators utilize a modified ECR fiberglass reinforced epoxy resin core rod with a tensile strength exceeding 1200MPa. This advanced material provides exceptional resistance to high temperatures, stress corrosion and acid attack, as well as excellent damping properties. The result is a product that can withstand strong winds, ice loads and mechanical vibrations, significantly reducing the risk of catastrophic failures and unplanned outages.
The silicone rubber housing is formed through a whole injection molding process, creating a seamless surface with excellent hydrophobicity, hydrophobicity migration and soil resistance. These properties prevent water from forming continuous films on the insulator surface, effectively eliminating pollution flashover accidents even in heavily contaminated industrial and coastal areas. This translates to fewer power interruptions and lower maintenance costs for utility companies.
Composite insulators weigh approximately 60% less than equivalent porcelain insulators. This significant weight reduction simplifies transportation, reduces installation time and labor costs, and minimizes stress on supporting structures. Contractors can complete projects faster and with fewer resources, improving overall project efficiency.
Our high-temperature vulcanized silicone rubber material offers outstanding resistance to UV radiation, ozone and weathering. This ensures long-term performance stability even in harsh environmental conditions, making our insulators ideal for high-altitude installations up to 3000m above sea level. HAIVO composite insulators have a proven service life of over 30 years.
The self-cleaning properties of silicone rubber eliminate the need for regular washing and maintenance. Unlike porcelain insulators that require periodic cleaning to prevent flashovers, our composite insulators maintain their insulation performance throughout their service life with minimal intervention, resulting in substantial long-term operational savings.
Model | Rated Voltage (kV) | Specified Mechanical Load (kN) | Spacing H (mm) | Arcing Distance (≥mm) | Minimum Creepage Distance (≥mm) | Lightning Impulse Residual Voltage (≤kVp) | Wet Power Frequency Withstand Voltage (≥kVr.m.s.) |
|---|---|---|---|---|---|---|---|
FZSW-18/6 | 18 | 6 | 260 | 235 | 615 | 115 | 52 |
FZSW-12/6 | 12 | 6 | 215 | 210 | 450 | 100 | 45 |
FZSW-24/8 | 24 | 8 | 305 | 265 | 780 | 130 | 60 |
FZSW-36/6 | 36 | 6 | 445 | 435 | 1015 | 190 | 90 |
FZSW-72.5/10 | 72.5 | 10 | 770 | 675 | 1820 | 350 | 150 |
The entire silicone rubber housing is molded in a single operation, creating a seamless, one-piece structure that maximizes insulation performance and eliminates potential failure points at shed interfaces.
Our proprietary core rod formulation undergoes a high-temperature curing process to achieve superior mechanical properties and long-term stability, ensuring reliable internal insulation and structural integrity.
End fittings are crimped onto the fiberglass rod using precision voice-operated displacement crimpers. This advanced technique ensures consistent crimp quality with minimal mechanical strength dispersion.
The connection between end fittings and the core rod is fully encapsulated in high-temperature vulcanized silicone rubber, creating a seamless bond that eliminates interface defects and prevents moisture ingress.
A multi-layer radial sealing system is implemented at all end fitting connections, providing long-term protection against moisture and environmental contaminants. This design has been validated through 1000 hours of accelerated damp heat cycling tests.
Ambient air temperature: -50℃ to +50℃
Altitude: ≤3000m
Power frequency: ≤100Hz
Pollution level: Class IV (heavy industrial pollution)
HAIVO 18kV post composite insulators are suitable for a wide range of power system applications:
18kV overhead power transmission lines
Urban and rural distribution networks
Substation busbar support systems
High-altitude power generation and transmission projects
Industrial power distribution systems
Coastal and heavily polluted industrial areas
We understand that every power project has unique requirements. HAIVO offers comprehensive customization services to meet your specific needs:
Standard colors: Red, gray and white
Compliance with IEC, ANSI, GB or customer-specified standards
Customized spacing and creepage distances
Various end fitting connection types
Special packaging and marking requirements
Composite insulators offer superior pollution flashover resistance, lighter weight, better mechanical performance and lower maintenance requirements compared to porcelain insulators. They are also less prone to breakage during transportation and installation.
Our composite insulators have a proven service life of over 30 years under normal operating conditions. The high-quality silicone rubber material provides excellent aging resistance and long-term performance stability.
Yes, all our products undergo rigorous testing and are certified by independent third-party laboratories. We can provide comprehensive test reports upon request.
Absolutely. Our engineering team can design and manufacture custom insulators based on your specific drawings and technical requirements.
The minimum order quantity for custom models varies depending on the complexity of the design. Please contact our sales team for detailed information.
HAIVO is committed to providing high-quality, reliable insulation solutions for power system operators and contractors worldwide. Our 18kV post composite insulators deliver exceptional performance, long-term durability and significant cost savings over the product lifecycle.
Contact us today to request a free technical consultation or a customized quote for your project. You can also download our complete product datasheet for detailed technical information.
