The invention relates to a cabinet for power supply or distribution, and especially to a dehumidifying
switchgear capable of automatic air intake and
discharge. The
switchgear comprises a cabinet, the cabinet is provided with a cabinet door, a sidewall of the cabinet door includes an inner wall and an outer wall, an enclosed cavity is formed between the inner wall and the outer wall, a heating
pipe is arranged in the enclosed cavity and comprises a
pipe body, the internal and external surfaces of the
pipe body are coated with heating films respectively, the
heating film at the external surface of the pipe body is further coated with an insulated thermal-conduction layer, two sidewalls, opposite to each other, of the cabinet are provided with ventilating fans respectively, the cabinet is internally provided with a detection
assembly, the cabinet door is provided with a touch display screen and an alarm, and the touch display screen, the alarm, the heating pipe and the detection
assembly are all connected with a controller. Thus,
moisture air in the cabinet can be exhausted out of the cabinet timely, flashover and
discharge are avoided, and it is ensured that devices in the cabinet operate safely and reliably.