Station post insulator are used to support and fix busbars and live conductors, and to keep live conductors or wires sufficiently distanced and insulated from the earth.
Insulators should have sufficient electrical insulation strength and moisture-proof performance.
TECHNICAL DATA:
| Model | System Voltage (kV) |
Height (mm) |
Dry Arcing Distance (mm) |
Creepage Distance (mm) |
Specified Cantilever Load (SCL) |
Max. Working Cantilever Load (MDCL) |
Power Frequency Withstand Voltage (Wet/Dry) |
Lightning Impulse Withstand Voltage |
| FZSW-69/26.8 | 69 | 814±10 | 660 | 1895 | 26.8kN | 12kN | 170kV/200kV | 385kV |
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Technical characteristics:
Silicone rubber shell
Excellent hydrophobicity
Excellent hydrophobic migration properties
Excellent resistance to contamination
Excellent electrical insulation properties
Excellent ageing resistance
| 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 |
Resistance to corrosion glass fibre core
Superior resistance to high temperatures, stress corrosion and acid attack
Improved damping performance
Excellent tensile strength (>1200Mpa)
Superior creep resistance
Superior fatigue fracture resistance
PACKAGING:
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The polymer station post insulators are all packaged in a weatherproof package to safeguard the product during transport on land, in the air and by sea. Depending on the mode of transport and expected storage conditions, several different grades of packaging are available. Special packaging arrangements are available on customer requirements.
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