DC 75 kV dust filter terminal

The DC 75 kV dust filter cable terminal is a specialized cable accessory used in high-voltage direct current transmission systems. Its technical characteristics and structural design are as follows:
1. Core structure and materials
Ceramic sleeve design: Adopting a high-strength ceramic umbrella skirt stacked structure, with a length of 500mm and an umbrella skirt crawling distance greater than 1260mm, to ensure insulation performance under high voltage
Stress cone component: an integral silicone rubber molded part that forms a tight fit with the cable insulation layer, optimizing the electric field distribution
Sealing system: All interfaces use silicone rubber sealing rings, with a cross-sectional area to embedded U-shaped groove ratio of 1.2-1.3:1, achieving long-term waterproof and moisture-proof
2. Performance advantages
Mechanical strength: Elastic sealing is achieved through cold shrinkage and pre expansion technology, with quick installation and tight fit
Environmental adaptability: It has excellent corrosion resistance, high temperature aging resistance, and is suitable for harsh outdoor environments
Maintenance cost: Long overall lifespan, low maintenance frequency, significantly reducing operation and maintenance costs
3. Typical applications
Medium and low voltage transmission system: suitable for DC 75kV voltage level, commonly used in substations, cable terminal connections and other scenarios
Supporting equipment: It can be used in conjunction with GIS combination appliances or transformer interfaces, and attention should be paid to the standardized matching of installation flanges