The YC200 series microcomputer protection and measurement device is a set The new generation of substation automation products, which integrates electronic technology, computer technology, power automation technology, and communication technology, adopts a systematic design concept. The functions of protection, measurement, control, monitoring, communication display, etc. are designed as a whole, and the distributed substation and distribution station microcomputer protection and automation devices are developed uniformly. This series features a large screen LCD Chinese display, a fully enclosed shockproof aluminum alloy chassis, a back plug mechanism, independent protection and signal outlets, and standardized hardware modules. It highlights the long-term reliable operation and routine control of protection and measurement devices in harsh environments such as high cold, multiple lightning strikes, low temperature, humidity, strong electromagnetic interference, harmful gases, and dust. It can be applied to various switchgear and wiring systems, such as single busbar, double busbar, bypass busbar, and dual power supply systems. It can be installed dispersedly on the switchgear or centrally assembled into screens, and connected to the backend system through bus communication to form a power automation system. Suitable for 10kV