{"id":7633,"date":"2025-10-28T03:13:04","date_gmt":"2025-10-28T03:13:04","guid":{"rendered":"https:\/\/www.raxpower.com\/?page_id=7633"},"modified":"2026-08-12T04:23:05","modified_gmt":"2026-08-12T04:23:05","slug":"isolador-de-suspensao","status":"publish","type":"page","link":"https:\/\/www.raxpower.com\/pt\/overhead-line-insulator\/suspension-insulator\/","title":{"rendered":"Isolador de Suspens\u00e3o"},"content":{"rendered":"
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Suspension Insulator<\/h2>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>
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Suspension insulators support conductors on high-voltage transmission towers while electrically isolating them from the structure. They comprise insulating discs connected by metal links, forming flexible strings configurable for different voltage requirements and environmental conditions. Types include cap and pin designs and interlink (Hewlett type), available in glass, porcelain, and polymer materials, with specialized variants like fog type for contaminated areas and aerodynamic profiles for high-wind or polluted environments.<\/p>\n

Polymer suspension insulators feature silicone rubber housings bonded to fiberglass core rods, while porcelain and glass types use ceramic or toughened glass dielectric elements. End fittings utilize ductile iron or galvanized steel for corrosion resistance. Multi-layer sealing systems create water-tight barriers, stacked shed designs minimize electrical stress aging, and corona rings protect cores from flashover events.<\/p>\n

These insulators distribute electrical stress across multiple discs in series, with design features managing capacitance variations for even voltage distribution. The chain-like structure absorbs mechanical stresses from wind and movement, preventing transmission line or tower damage. Individual failed units can be replaced without disassembling entire strings, simplifying maintenance.<\/p>\n

Applications span 69 kV to over 1000 kV transmission lines, substations, and railway electrification across diverse climates. Specifications include mechanical failing loads up to 530 kN, voltage ratings from 11 kV to 230 kV and beyond, and creepage distances exceeding 5000 mm, with shed diameters typically 255-280 mm and adjustable effective lengths.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>