Inter-carriage power cabinet and train

The invention discloses an inter-carriage power cabinet and a train. A main contact point of a socket at a first carriage is electrically connected to a main joint of a plug; a DC1500V power source inan inter-carriage power supply cabinet is connected to the main contact point of a contactor; a first contact point and a second contact point of the socket at the first carriage are electrically connected to a first joint of the plug. The DC1500V power source in the inter-carriage power supply cabinet enters into the train, forming a loop; the contactor in the inter-carriage power supply cabinetis charged; the main contact point of the contactor connected to the DC1500V power source is closed. A third contact point and a fourth contact point of the socket at the first carriage are electrically connected to a second joint of the plug, and thereby a DC110V power source of a vehicle storage battery enables an interlock relay at an end carriage to be charged; an assistant closing contact point of the interlock relay