Distribution Network Automation usually refers the system integrating computer system, communication system, information system and controlling system to implement detection, control and management on cable network. Current-time cable automatic equipment, based on on-pole vacuum breaker and its controlling devices- RPT-3 and power supply transformer, possesses the advantages of mature, reliability, high efficiency and simpleness in supervisory and control; and even more, it is characteristic of maintenance free and strong expanding; and it is very suitable to the characters of the present China power grid and reforming requirements of urban power grid.
