
220kV Composite Insulator | Product Rating | Highest System Voltage | Product type | Fitting Type | Mechanical Load(kN) | Min.Wet power frequency withstand voltage (kV) | Min.Dry lighting impulse withstand voltage, (kVp) | Min.Creepage Distance(mm) | 220 kV | 245 kV | Suspension | B & S Type | 70/90 | 460 | 1050 | 7595 | 220 kV | 245 kV | Suspension | T & C Type | 70/90 | 460 | 1050 | 7595 | 220 kV | 245 kV | Tension | B & S Type | 120/160 | 460 | 1050 | 7595 | 220 kV | 245 kV | Tension | T & C Type | 120/160 | 460 | 1050 | 7595 |
Advantages of Composite Insulators over Conventional Porcelain Insulators :- Light weight, Ease of Installation and less transportation charge.
- Resistance to breakage and vandalism.
- Unique self-cleaning property, reduced maintenance cost.
- Hydrophobicity and recovery of hydrophobicity make it suitable for polluted environment and salty atmosphere.
- Low leakage current in long term ageing.
- Resistance to puncher due to cutting age technology.
- Superior UV & weather resistance properties.
- Sustained hydrophobicity, resulting in lower leakage currents, reduced dry band arcing, and less risk of flashover,
- Specially formulated high tracking resistance silicone rubber used for sheathing.
- A higher mechanical strength to weight ratio which enables the construction of longer spans of towers.
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