The hollow core type comprises aluminum alloy flanges, a glass fiber-reinforced resin tube, and a silicone rubber housing with sheds. It is compatible with high-voltage equipment such as GIS switchgear, transformers, and surge arresters.
Both variants feature a material composition with strong hydrophobicity, ensuring low leakage current and minimal maintenance requirements. Manufactured using a proprietary HTV silicone rubber formula and a patented integral molding injection/sealing process, they comply with ANSI/IEC standards and are available for customization.
Used in power plants and substations for insulation and mechanical fixation of busbars and electrical equipment. Solid core type is suitable for reactors, busbars, isolation switches, etc.; hollow core type is commonly used in high-voltage equipment such as GIS combination switches, transformers, surge arresters.
HTV silicone rubber has patented formula and production process, strong hydrophobicity, low leakage current, low maintenance cost, stable mechanical strength and insulation performance.
Core Type | Parameter Category | Key Indicators | Range/Description |
Solid Core | Voltage Class | 17.8kV - 750kV | |
Mechanical Performance | Specified Mechanical Load | 0.7kN - 95kN | |
Electrical Performance | Lightning Impulse Withstand Voltage | 95kV - 1800kV | |
Minimum Creepage Distance | 267mm - 6706mm | ||
Structural Dimensions | Height | 254mm - 3861mm | |
Hollow Core | Voltage Class | 126kV - 550kV | |
Mechanical Performance | Rated Bending Load (MML) | 4kN - 98kN | |
Electrical Performance | Lightning Impulse Withstand Voltage | 450kV - 1050kV | |
Structural Dimensions | Height | 1180mm - 5635mm | |
Pipe Inner Diameter | Φ100mm - Φ510mm | ||
Pipe Outer Diameter | Φ113mm - Φ510mm | ||
Material Composition | Solid Core | Core rod + silicone rubber sheds and sheath | |
Hollow Core | Aluminum alloy flange + glass fiber reinforced resin sleeve + silicone rubber sheds |
