Production Introduction
Railway Sectionalizer
| 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) |
| / | 370±0.6mm | /mm | 380mm | / | 35mm | 23 | - | - |
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 |
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Advantage
This railway polymer insulator is suitable for electrified railway tunnels with complex operating conditions. It effectively prevents flashover accidents caused by pollution and reduces cleaning and maintenance workload. Due to its small size, it is an irreplaceable product in areas with limited tunnel clearance, especially in regions with heavy pollution, where porcelain, glass, and other types of electrical insulators cannot be used.
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