12-pulse rectifier for box-type substation

The utility model belongs to the technical field of power supply systems of box-type substations, and relates to a 12-pulse rectifier for a box-type substation, which comprises a cabinet body and three-phase six-pulse rectifier bridges A and B. The three-phase six-pulse rectifier bridges A and B are connected in parallel, the three-phase six-pulse rectifier bridge A is installed at the upper partin the cabinet body, and the three-phase six-pulse rectifier bridge B is installed at the lower part in the cabinet body. The three-phase six-pulse rectifier bridge A and the three-phase six-pulse rectifier bridge B respectively comprise twelve diodes, twelve block-shaped radiators and six groups of long-strip-shaped radiators. AC confluence busbars L1, L2, L3, L4, L5 and L6 of the rectifier are concentrated at a lower incoming line of the cabinet body, and DC output busbars L + and L-are concentrated at a side outgoing line of the cabinet body. According to the rectifier, the direct-current output copper bar is direc