Production Introduction
Composite Long-rod Polymer Insulator
| Rated Voltage | Height | Dry Arcing Distance | Creepage Distance | Specified Cantilever Load (SCL) |
Rod | No. od sheds | Wet Power Frequency Withstand Voltage (kV) |
Lightning Impulse Withstand Voltage (kV) |
| 110kV | 1395±15mm | 1079mm | 3215mm | 210kN | 50mm | - | - | 550 |
Parameters
| 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 |
| Flammability (Grade) | FV-0 | FV-0 |
Composite Long-rod Polymer Insulator, by supporting transmission lines on steel towers and isolating them from the tower, are essential for ensuring the safe supply of electricity.
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. |
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