Power system fault alarm device

The utility model provides a power system fault alarm device, it is main includes a singlechip MCU and a GSM module that links to each other, singlechip MCU dispose 18 way commercial power switching values monitorings, 2 tunnel switching values input monitoring, wherein 18 way commercial power switching values monitorings insert through optoelectronic isolation through the sensor singlechip MCU, the input monitoring of 2 tunnel switching values insert through switching value acquisition circuit singlechip MCU, it has the button keyboard of supporting LED display screen and operation usefulness still to meet respectively on singlechip MCU, the GSM module supporting have at least one hand -held type mobile terminal SIM who is used for receiving the SMS, singlechip MCU adopt 16 transport record of a lorry mascerating machine MCU, dispose clock circuit and memory on it, it has the buzzer of warning usefulness to link to each other in addition, it is reasonable that it has structural grouping, and convenient to use is reliable, shortens troubleshooting total time for fault handling speed, guarantee electric power facility ann congruent characteristics.