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Suspended insulator 220 kV
220 kV, suitable for high-voltage 50 Hz three-phase AC transmission systems, ensuring long-term outdoor operation. The core is made of epoxy fiberglass and the protective shell is made of high temperature vulcanized silicone rubber, reducing weight by 45-50% compared to porcelain.
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Product Details
220 kV, suitable for high-voltage 50 Hz three-phase AC transmission systems, ensuring long-term outdoor operation. The core is made of epoxy fiberglass and the protective shell is made of high temperature vulcanized silicone rubber, reducing weight by 45-50% compared to porcelain.
Crimped ends + double sealing with connection strength ≥ 8 MPa between rod and sheath to prevent breakdown.
Typical applications:
– Transmission line: suspension and insulation of 220 kV overhead line wires with 13–15 series-connected straight supports and 18 tension supports (the number increases to 20 in areas with heavy ice).
– Substation Maintenance: Using live cleaning technology (leakage current ≤ 0.4 mA) to clean contaminated insulators on site.
– Connection to new grids: In the case of protection against salt fog corrosion of wind/photovoltaic substation power lines, composite insulators are the preferred solution to replace traditional porcelain series connections.
220kV suspension insulators, due to their high mechanical strength, modular design and environmental adaptability, have become the main components of ultra-high voltage power transmission networks, playing a key role in the expansion of ultra-high voltage lines and the consumption of new energy.
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