The BC561 intelligent protection and control system integrates protection, control, monitoring, measurement and recording. It adopts large capacity, resource redundancy design and plug-in structure. It is suitable for protection, control, measurement and monitoring of various voltage level power systems, Can be configured for a variety of distributionrecloser or Sectionalizer controller and otherspecialprotection. Users can choose according to the needs of the scene, apply different models, applied to different objects. They can be used for different main wiring methods, such as single bus, double bus and multi-bus wiring. The protection function also supports different types of power grids, such as a neutral point suspension system, an arc suppression coil grounding system and a small resistance grounding system. In addition, BC561 can store four sets of protection settings, group switching function to quickly and easily adapt to a variety of operating methods. Time synchronization, event reporting, waveform capture, reduced troubleshooting time, and reduced maintenance costs. BC561 supports RS485 bus and Ethernet communication network form, to meet the different users, different industrial sites, different network environments, different sizes of systems on the communication and network structure requirements. And support dual-network mode, parallel or hot standby mode. Thereby further improving the reliability of the communication. You can use Modbus RTU, Modbus TCP,DNP3.0,IEC60870-5-101/104 protocol to achieve communication with the upper equipment.