| Feature | Polymer Insulators | Porcelain Insulators |
|---|---|---|
| Weight | Lightweight, 30-50% lighter than porcelain. | Heavy, requiring specialized equipment for handling. |
| Mechanical Strength | High tensile strength with a fiberglass core. | Brittle and prone to cracking under mechanical stress. |
| Electrical Performance | Excellent insulation with lower leakage current. | Good insulation but less effective in polluted areas. |
| Pollution Resistance | Hydrophobic silicone rubber repels water and dirt. | Attracts pollution and moisture, requiring frequent cleaning. |
| Maintenance | Minimal maintenance due to self-cleaning surface. | Requires regular cleaning in polluted areas. |
| Durability in Harsh Weather | Flexible and resistant to seismic activity. | Brittle under stress, more prone to cracking. |
| Cost Efficiency | Lower shipping and installation costs. | Higher transportation and handling costs. |
| Longevity | Long-lasting but can degrade under extreme UV exposure. | Extremely durable but prone to mechanical fractures. |
| Best Use Cases | High-voltage transmission lines, polluted zones, coastal areas. | Stable climates, historical infrastructure, extreme heat zones. |
Table of Contents
Why Choose Polymer Insulators?
- ✅ Lightweight & Easier Installation: Reduces labor and shipping costs.
- ✅ Pollution Resistant: Hydrophobic surface minimizes cleaning needs.
- ✅ High Mechanical Strength: Resistant to cracking and mechanical stress.
Why Choose Porcelain Insulators?
- ✅ Long-Term UV Stability: Ideal for extreme heat and UV exposure.
- ✅ Durability in Stable Climates: Performs well in low-pollution environments.
Conclusion:
For modern electrical transmission lines, polymer insulators are often the superior choice due to their lightweight design, pollution resistance, and cost efficiency. However, porcelain insulators remain suitable for low-maintenance areas with stable climates.
