DFW-12 / 630A cable branch box (American cable branch box)

I. INTRODUCTION: DUW-12 cable branch box (American) is a widely used system in North America in the electricity distribution network transmission and distribution projects. It is a one-way door, horizontal multi-way busbar as the main features. With a small, flexible combination, significant advantages fully insulated, sealed and so on. The rated current is generally classified into two main circuit 630A and 200A branch circuit. 630A main circuit screw-bolt connection, 200A branch circuits using plug-in connection, and can take a load swap. Busbar type (American) cable branch box with cable connectors conform IFFF386 standards. Widely used in urban power grids, residential areas, commercial centers and other densely populated cities. Second, characteristics: 1, fully insulated, sealed, maintenance-free, reliable life security. 2, corrosion-resistant, flood water, above and below ground can be installed for a variety of harsh environments. 3, simplified urban cable network system, saving investment. 4, small footprint, high density, good looks, coordinated with the surrounding environment. 5, flexible wiring scheme, the operation is extremely easy to install. 6,200A cable connector plug can take the load, but with isolation switches. Fault indicator can be installed quickly determine the location of applause. Third, the technical parameters: Project 200A 630A branch network branch network rated voltage 12kv 12 / 24kv rated current of 630A 630A 1 minute power frequency withstand voltage (50Hz) 45Hz 45Hz 15 分钟 DC voltage 52kA 52kA short time withstand current 16kA; 2s 20kA; 2s peak withstand voltage 45kA 50kA impulse voltage 105KV 105KV partial discharge (15kA) ≤10PC ≤10PC