220kV AC Composite Long-rod Polymeric Insulator With Ball
Electrial Insulators
Electrial Insulators are a crucial component of power transmission lines, serving as both the sole electrical insulation element and a vital structural support. The performance of insulators and their rational configuration directly impact the safe and stable operation of the line. Power supply bureaus primarily use two categories of insulators in their transmission lines: disc-type suspension insulators used in tension strings and rod-type suspension composite insulators used in suspension strings and jumper strings. Over long-term operation, these two types of insulators have exhibited different performance characteristics and performance patterns.
Advantage
| Item | Composite Suspension Insulators |
| Hydrophobicity | The hydrophobic property of silicone rubber offers excellent insulation and resistance to wetting, forming water beads without requiring washing or greasing, even in humid or polluted climates. |
| Contamination & Pollution Performance | Excellent |
| Maintenance | It can significantly reduce the operational maintenance costs of the line, power outage losses, and manual labor intensity. |
| Size and Weight | Small in size and lightweight (approximately 1/7 to 1/10 the size of equivalent porcelain insulator strings), the umbrella skirt exhibits excellent elasticity, is resistant to breakage, facilitates easy transportation and installation, and is cost-effective. |
| Mechanical Load | The fiberglass core rod has high tensile strength, which is 5 to 10 times that of ceramic materials. Due to the small cross-section of the core rod, the product has small dimensions and lightweight, high bending strength, and is easy to manufacture large tonnage products exceeding 300kN. |
| Delivery time | The manufacturing process is simple, and the delivery time is short. |
FAQ
1. What standards do your products comply with?
Our products comply with IEC, ANSI, IEEE, and GB standards, and can also be manufactured according to customer specifications.
2. Can customers visit and inspect the factory?
Yes. Factory visits, inspections, and third-party audits are warmly welcomed at any time.
3. What is your delivery time?
Standard products can usually be delivered within 1–2 weeks based on available materials. Delivery time for customized products depends on order quantity and technical requirements.
4. What packaging do you use?
We use standard export packaging, including cartons, pallets, or wooden cases for heavy cargo and long insulators.
5. Do you have type test report for polymer insulators?
Yes, we have several type test reports for polymer insulators across different voltage ratings.
All reports are issued by an independent laboratory certified by CNAS.
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