Watchdog device for high voltage switch cabinet

The utility model relates to a watch dog device, particularly to a watchdog device for a high voltage switch cabinet. The watchdog device comprises an electrified induction device, an alarm device and an infrared signal detection device, wherein the electrified induction device and the infrared signal detection device are respectively connected with the alarm device. Because of the arrangement, the device can avoid accidents caused by mistakenly opening a 10kV high voltage electrified cabinet. The watchdog device transforms invisible high voltage electricity into visible alarming sound, so the device can remind if the switch cabinet is electrified, thereby effectively preventing a staff mistakenly entering an electrified chamber. The device provides a reliable protection net for the lives of electric power workers, and satisfies requirements of safe, reliable and stable operation of electrical network.