I. Overview DFW series high-voltage cable branch box is widely used for node connection of 10KV cable system. It is the main electrical equipment for collecting and tapping cables after they exit the switch cabinet. The cable connector of the branch box is tightly insulated with imported rubber of high-grade insulation, and there is no charged body; the switches of the branch box with switches are all SF6 insulated load switches. The DFW branch box is designed for outdoor maintenance-free operation, which is safe and reliable. Its protection grade is IP33 ～ IP66. The underground tap can withstand flooding. This product is widely used in urban industrial districts, residential districts, commercial centers, mining areas, and large-scale enterprises such as steel, automobiles, petroleum, chemicals, cement and other occasions. It is especially suitable for urban power grid reconstruction projects, which can greatly save electrical equipment and Cable investment to improve power supply reliability. 2. Model meaning 3. Normal use conditions 1. Ambient temperature: maximum temperature + 40 ° C, minimum temperature -30 ° C; 2. Altitude: ≤2000m; 3. Wind speed: equivalent to 34m / s (not more than 700 Pa); 4 Humidity: The average daily relative humidity is not more than 95%; the average monthly relative humidity is not more than 90%; 5. Anti-vibration: horizontal acceleration is not more than 0.4m / s2, and vertical acceleration is not more than 0.15m / s2 6. The slope of the installation site : Not more than 3 °; 7. Installation environment: The surrounding air should not be significantly polluted by corrosive, flammable gases, water vapor, etc., and there should be no severe vibration at the installation site; Note: When ordering this product beyond the above conditions, it can be used with this Company negotiation.