SYS810 series of new generation of digital protection and control devices suitable for the protection and control 10kv below the voltage level of the unit interval, with perfect protection, measurement, control, backup power from posting communications monitoring, substation, power plants, high and low voltage distribution protection and control of electrical and auxiliary power systems provide a complete solution that can effectively protect the safety of high and low voltage grid and auxiliary power system of stable operation. All devices can be centrally installed screen group, may also be installed in low voltage switch cabinet.