Table of Contents
Introduction
High-voltage transmission demands insulators that combine mechanical strength, electrical reliability, and long-term durability. Our 220 kV composite polymer insulator lineup—including the polymer type disc insulator, suspension composite polymer insulator, and polymer long rod insulator—is engineered to exceed expectations in the harshest environments. Discover how these advanced solutions will elevate your grid’s performance.
Why Composite Polymer Insulators Matter
- Lightweight Construction
Composite materials reduce weight by up to 60 % compared to traditional porcelain or glass. The result? Faster installation, lower transport costs, and decreased mechanical stress on towers. - Hydrophobic Silicone Housing
The silicone rubber shed profile repels water and contaminants, ensuring reliable performance under rain, fog, or pollution. This makes every suspension composite polymer insulator an ideal choice for coastal and industrial zones. - High Mechanical Strength
With a fiberglass-reinforced epoxy core, our polymer long rod insulator withstands extreme tensile and bending loads—critical for 220 kV overhead lines subject to wind galloping and icing.
Key Products & Features
| Product Model | Voltage Rating | Design Type | Core Material | Typical Use Case |
|---|---|---|---|---|
| PTD-220 | 220 kV | polymer type disc insulator | Fiberglass/Epoxy | Transmission towers and substations |
| SCI-220 | 220 kV | suspension composite polymer insulator | Silicone Rubber & Epoxy | Long-span river crossings and mountain lines |
| PLR-220 | 220 kV | polymer long rod insulator | Epoxy Rod with Sheds | Compact substations and hybrid fittings |
Polymer Type Disc Insulator: Versatile & Reliable
- Modular Stack-up
Multiple disc units can be combined to meet custom voltage requirements, making the polymer type disc insulator highly adaptable. - Ease of Maintenance
Individual discs are lightweight and simple to replace in the field, reducing downtime. - Enhanced Flashover Performance
Special shed geometry and hydrophobic material minimize leakage currents and boost pollution performance.
Suspension Composite Polymer Insulator: Engineered for Extremes
- Superior Vibration Damping
The composite core absorbs oscillations caused by conductor galloping, reducing mechanical fatigue. - Optimized Electric Field
Carefully profiled sheds ensure uniform field distribution, lowering the risk of partial discharge under lightning surges. - Custom Hardware Options
Available with galvanized or stainless-steel end fittings to match environmental and mechanical requirements.
Polymer Long Rod Insulator: Compact & Robust
- Space-Saving Design
The sleek, self-contained form factor makes the polymer long rod insulator perfect for constrained tower geometries and substations. - High Impulse Withstand
Tested to IEC and ANSI standards for surge voltages, ensuring reliability during switching and lightning events. - Integrated Shedding Profile
A continuous silicon housing eliminates junction points, providing superior aging resistance and uniform creepage distance.
Real-World Benefits
- Reduced Lifecycle Costs
Thanks to corrosion-resistant materials and hydrophobic sheds, maintenance intervals extend by 30 %–50 % compared to conventional units. - Rapid Field Deployment
Lightweight components cut installation time by nearly half, accelerating project timelines. - Environmental Resilience
From coastal salt spray to desert sandstorms, composite insulators maintain performance—proving why polymer type disc insulator, suspension composite polymer insulator, and polymer long rod insulator are trusted worldwide.
Selecting the Best Insulator for Your Network
- Assess Voltage & Mechanical Loads
Verify the line’s maximum system voltage and conductor weight to choose between disc, suspension, or long rod designs. - Evaluate Environmental Conditions
High-pollution or high-humidity areas benefit most from hydrophobic silicone housings found in all composite products. - Consider Hardware Compatibility
Ensure end fittings and mounting clamps match existing towers or substation structures. - Verify Standards Compliance
Our insulators meet IEC 61109, IEC 60815, and IEEE test protocols for global interoperability.
Installation & Maintenance Best Practices
- Handling
Always lift by the metal end fittings; avoid contact with the silicone surface to prevent contamination of hydrophobic properties. - Torque Guidelines
Use manufacturer-specified torque values for cap-and-pin assemblies to ensure secure, leak-free joints. - Routine Inspections
Conduct visual checks annually; look for surface deposits that can be rinsed off with low-pressure water. - Cleaning Schedule
In severe pollution zones, a quick rinse every 18–24 months preserves performance without the need for abrasive cleaning.
Conclusion
Upgrading to a 220 kV composite polymer insulator—whether you choose a polymer type disc insulator, suspension composite polymer insulator, or polymer long rod insulator—means embracing a lighter, more durable, and more reliable solution. Experience lower maintenance, quicker installations, and unparalleled electrical performance.
Ready to future-proof your transmission network? Contact our specialists today for detailed data sheets, mechanical drawings, and sample orders.
