| Rated Voltage (kV) |
Section Length (mm) |
Dry Arcing Distance (mm) |
Leakage Distance (mm) |
Power Frequency Withstand Voltage(kV) |
Lightning Impulse Withstand Voltage (kV) |
| 110 | 1270±15 | 1167 | 3200 | 230 | 550 |
At present, composite cross arm insulators are widely used in power gridtransmission lines, accounting for about 50% of the line silicone rubber insulator consumption. Among them, the proportion of linear towers is higher. Almost all linear towers in heavily polluted areas use composite insulators. Composite polymeric insulators have solved the pollution flashover problem that has plagued the power grid for many years with their excellent anti-flashover performance.
This series of cross arm post insulator are composed of three parts: glass fiber epoxy resin drawing rod, silicone rubber umbrella skirt and metal fittings. The silicone rubber umbrella skirt adopts the whole injection and compression process, thus solving the key problem affecting the reliability of composite insulators -- the interface electrical breakdown.
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