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220kv Silicone Polymer Post Insulator
Material Composition: Robust & Weather-Resistant
• Cylindrical Insulated Core: Engineered fromECR glass fiber reinforced epoxy resin, this core withstands extreme mechanical loads—including cantilever, tensile, and compressive forces—while maintaining dielectric integrity. The ECR glass fiber ensures3× acid resistancecompared to standard fiberglass, critical for longevity in polluted environments.
• Outer Sheath: Molded fromhigh-temperature vulcanized (HTV) silicone rubberwith a thickness of 4-6mm, the sheath deliversHC1-class hydrophobicity, minimizing surface contamination and leakage current. Its self-cleaning properties reduce maintenance frequency by up to 70% in desert and coastal regions.
• End Fittings & Conductor Clamps: Manufactured fromductile ironfor strength, with all ferrous components—excluding stainless steel and aluminum—treated viahot-dip galvanizing(86μm zinc layer) to resist salt-corrosion. The conductor top clamp, integral to connecting the insulator to transmission towers, adheres to identical material and treatment standards, ensuring structural consistency.
Performance Advantages: Safety & Efficiency
• Mechanical Superiority: Rated to withstand160kN mechanical loads(4× safety margin), it exceeds IEC 60120 standards for 220kV systems. The design mitigates stress concentration through vacuum pressure impregnation (VPI) of the core, eliminating internal voids.
• Electrical Reliability: Boasts apollution flashover voltage 2.8× higher than porcelain insulatorsunder IEC 60815-2 e4-class contamination (ESDD 0.25mg/cm²). UV-resistant silicone sheaths maintain HC2 hydrophobicity after 2000-hour accelerated aging tests.
• Climate Adaptability: Operates from-40°C to +80°C, with thermal cycling resistance validated in Sahara (55°C surface temperature) and Siberian winters. The lightweight design (25kg vs. 90kg porcelain equivalent) reduces transportation costs by 65% and enables single-person installation.
Model |
Rated voltage | Rated Mecha rical load(KN) | Structure height H(mm) | Insulating distance Li(mm) |
Min creepage distance(mm) | Lightning impulse withstand voltage(peak)KV |
PF wet withstand voltage(peak)KV |
FZSW4-220/10 | 220 | 10KN | 2440 | 2200 | 7060 | 1000 | 395 |
Composite Long Rod Suspension Insulator with Hydrophobic Surface (CE Certified)
LONG ROD INSULATOR（220KV）
No. | Parameter | Unit | Data |
1 | System voltage | KV | 220 |
2 | Maximum system voltage | kV | 245 |
3 | Frequency | Hz | 50 |
4 | Nominal Polymer Length | Inches | 48 |
5 | Section Length | mm | 2700±20 |
6 | Creepage Distance | mm | 6700 |
7 | Number of sheds | pcs | 51 |
8 | Power frequency flush over voltage (Dry) | kV | 650 |
9 | Material of rod and diameter | fiberglass,18mm | |
10 | Material of weather | Silicon rubber | |
11 | Materials of end fittings | Cast Iron | |
12 | Thickness of galvanizing of steel parts | um | >86µm |
13 | Outside diameter of insulator shed | mm | 142 |
14 | Specified Mechanical Tensile Load | KN | 120 |
15 | Color of insulator | Grey | |
16 | Standard | IEC61109 |
Certifications & Global Compliance
Fully certified toIEC 61109,IEC 60120, andIEC 60815-2standards, this insulator meets stringent requirements for 220kV transmission lines worldwide. It complies with regional grid specifications, including Algeria’s SONELGAZ standards and European CENELEC norms.
