ASZ-413 Digital Input Reserve Power from the cast device disconnect of main power failure or other reasons, automatic backup power to work to achieve mutual investment function of line supply, and the main source of re-charged case, off open the standby power into the main power supply, the self-recovery function in order to achieve a working power. Main functions: a) into the line standby power automatically invested functionality; b) composite voltage start over-current protection; c) overload protection; d) PT wire-break monitoring function; e) event logging, fault recording function; f) CAN data communication functions