Design of Mining Versatile Protector of Highvoltage Switch Based on F2812

The design of versatile protector on high-voltage switch,which gathers the functions of protection,measure,kilowatt hour gauge and communication,and adopts chip F2812 as the control core,is introduced.The principle diagrams of versatile protector's hardware for A/D sampling,frequency measurement,and CAN communication interface are given.The partial software flow diagram is introduced.The method of realizing inverse time-limit protection is propounded.