When there is a malfunction or maintenance of the medium and low voltage distribution network section or equipment, the traditional way is to perform a switching operation to cut off the upper power supply. Then, the emergency power supply vehicle is connected to the low voltage outgoing equipment through bypass cables using copper noses. A power outage lasting more than one hour is required to achieve the transfer of low-voltage load for power supply. Not only is the power outage long, but there is also a certain degree of danger involved. Using non-stop operation method and emergency power quick connection. As a core component, the medium and low voltage quick connector has developed different forms of quick connector devices in seven different application scenarios, including low and medium voltage, indoor and outdoor, and has been coordinated with existing distribution equipment. This not only significantly reduces the preparation time and power outage range for load transfer, but also reduces the on-site workload of maintenance personnel, and provides technical guarantees for improving the reliability of medium and low voltage distribution network power supply.