Production Introduction
35kV Electrical Composite Silicon Rubber Strain Insulator
| Rated Voltage | Height | Dry Arcing Distance | Creepage Distance | Specified Cantilever Load (SML) |
Rod | No. od sheds | Wet Power Frequency Withstand Voltage (kV) |
Lightning Impulse Withstand Voltage (kV) |
| 36kV | 630±15mm | 460mm | 970mm | 70kN | 16mm | - | - | 265 |
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 |
feature
Composite insulators, which utilize epoxy rods and rubber sheds for external insulation, are a type of polymer composite insulator widely used in high voltage transmission and distribution power systems. Compared to traditional ceramic and glass insulators, composite insulators are significantly lighter (weighing only about 1/4 to 1/8 as much), possess higher strength (approximately 10 times stronger than high-strength porcelain insulators), and require less maintenance due to their water-resistant properties. Moreover, they address the short lifespan issue of conventional polymer materials, boasting a life expectancy of several decades. This makes them a cutting-edge advancement in power system technology.
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