A medium voltage switchgear

Abstract

The invention discloses a medium-voltage switch cabinet. The medium-voltage switch cabinet comprises a cabinet body and a cabinet door which are rotatably connected with each other; the cabinet door is provided with an external monitoring collector used for sensing external fire conditions; one side of the external monitoring collector is electrically connected with a spraying mechanism which is located at the top of the cabinet body and can physically cool the periphery of the switch cabinet; an internal monitoring collector and a controller are arranged in the cabinet body; a vacuum pump isarranged on one side, away from the cabinet door, of the cabinet body; the air suction opening of the vacuum pump is communicated with the interior of the cabinet body; the external monitoring collector and the internal monitoring collector are both connected with the controller through data lines; and the controller can control the spraying mechanism and the vacuum pump to be started and stoppedrespectively. The switch cabinet can be prevented from being damaged by external fire, and fire generated in the switch cabinet can be handled.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a medium-voltage switchgear. Background technique [0002] Switchgear is a device for opening and closing, controlling and protecting electricity during the process of discharging, transmitting, distributing and converting electric power in the power system. Due to the expensive electrical system components in the switchgear, the fire protection of the distribution cabinet must be considered. The fire may occur inside the switchgear or outside the switchgear. If the fire cannot be controlled in time when a fire occurs, it will cause greater economic losses. [0003] Based on the above problems, the Chinese patent with the publication number CN104409992A discloses a cooling switchgear and its monitoring system. The switchgear adopts dual remote monitoring of fan failure and temperature warning in the cabinet. When the temperature in the cabinet exceeds the set limit ...

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Problems solved by technology

[0004] However, although this kind of switchgear samples the monitoring system to monitor the use status of the switchgear, once an abnormal phenomenon occurs in the switchgear, such as a fire, it only sends a warning signal to remind the staff to deal with it. In the process of processing, often the switchgear has caused secondary damage or complete damage, so it needs to be improved

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