Insulating core for high-voltage bushings that provides dielectric strength and mechanical support in electrical equipment.
A cylindrical or conical insulating component within high-voltage insulating bushings, designed to isolate conductive parts at different potentials while withstanding electrical, thermal, and mechanical stresses. It serves as the primary dielectric barrier between the high-voltage conductor and grounded flange, preventing flashover and ensuring safe operation in transformers, switchgear, and other high-voltage apparatus.
诱因 → 失效模式 → 工程缓解
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Properly maintained insulating cores can last 30-40 years, depending on operating conditions, voltage stress cycles, and environmental exposure.
High temperatures reduce dielectric strength and accelerate aging. Cores are rated by thermal class (e.g., Class H for 180°C) to ensure performance within specified temperature ranges.
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