Closed insulation connector for power distribution network rack

The invention provides a closed insulating connector for a power distribution network rack, which comprises a connecting plug, a socket and an end cover, the connecting plug is installed at a wire end of a rack of the power distribution network, the socket is installed on a high-voltage wire of the power distribution network, the connecting plug is sleeved with the end cover, the connecting plug and the socket are clamped and fixed, and the end cover and the socket are fixedly connected with each other through threads; the socket is provided with a connecting seat and a wire connecting part, the wire connecting part is connected with a high-voltage wire, the connecting seat is provided with a bolt mounting hole, and an anti-falling bolt is arranged in the bolt mounting hole; the connecting plug is provided with a mounting groove and an anti-drop groove, the anti-drop bolt is embedded into the mounting groove, and after the connecting plug is inserted into the socket, the anti-drop bolt is embedded into the an