27.5kv Polymer Composite Station Post Insulator
27.5KV composite post insulator are designed with advanced features to ensure optimal performance in high voltage stations and substations. These insulators boast a remarkable leakage distance, providing maximum resistance to contamination and a creepage distance of 1550mm. Specifically engineered for use in conjunction with switches, switchgear, break switches, and disconnecting switches, they are a crucial component in ensuring the reliability of high voltage systems.
| Item | Requirement | Measured Valued |
| Visual examination | Fuchsine, grey or white, no obvious mechanical admixture. Vulcanized silicon rubber with dense and smooth cutting surface. | Ok |
| Hardness (shore A) | ≮50 | 65~70 |
| Tensile strength (Map) | ≮4 | 4~6 |
| Failure elongation (%) | ≮150 | ≮180 |
| Tearing strength (kN/m) | ≮10 (right angle sample) | 12~15 |
| Volume resistivity (Ω.m) | 1X1012 | 3~8X1012 |
| Puncture strength (kV/mm) | Alternating current ≮22 | ≮30 |
| Tracking and erosion | TMA4.5,erosion depth≯2.5mm | TMA4.5, erosion depth <0.8mm |
- Constructed with a solid core design, these composite line post insulatorcomprise a high-quality FRP rod, silicone rubber sheds, and end fittings. The fiberglass rod, sourced from Wuhan Line Power, is crafted with precision to achieve maximum tensile strength. The alignment of strands in the rod further enhances its robustness.
- The end fittings, crucial components of these insulators, are made of either steel or ductile iron. A specialized crimping process securely attaches the end fittings directly to the rod, ensuring a durable and reliable connection.
- For protection against varying weather conditions, the station post feature weathersheds. These weathersheds are crafted using a high-pressure injection molding process, creating housings made from an HTV silicone alloy rubber. This design not only ensures resistance to weather elements but also contributes to the overall longevity and performance of the insulators.
- The 27.5KV polymer station post insulators are a reliable and robust solution for high voltage applications, offering advanced features such as high leakage and creepage distances, a solid core design, and durable materials for optimal performance and longevity in demanding environments.
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