Moisture-isolating switch cabinet

Abstract

The invention relates to a moisture-isolating switch cabinet. The moisture-isolating switch cabinet is provided with a cabinet body, wherein the bottom plate of the cabinet body is provided with a base plate; a waterproof film is laid on the base plate; drying agent is laid on the waterproof film. Since waterproof paper for isolating moisture and the drying agent for absorbing moisture are laid on the base plate, according to practical application, the internal humidity of the switch cabinet is obviously decreased, the condensation phenomenon disappears and the drying agent keeps dry.

Description

technical field [0001] The invention relates to a moisture-proof switchgear. Background technique [0002] During the operation of the city network switchgear, because the bottom of the switchgear is in a sealed state for a long time, and the bottom plate is not properly sealed, the ground gas in the well continuously penetrates into the switchgear. At the same time, due to the large temperature difference inside and outside the switchgear, it penetrates The ground gas in the switchgear is atomized to form condensation, which adheres to the inner wall of the switchgear and gradually forms water droplets. The water droplets drop on the "T" head of the cable, resulting in insulation aging and flicker discharge, resulting in long-term operation. , There will inevitably be faults such as single-phase grounding or phase-to-phase short circuit, which will affect the normal power supply. In order to prevent the ground air from penetrating into the switchgear, the commonly used met...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the city network switchgear, because the bottom of the switchgear is in a sealed state for a long time, and the bottom plate is not properly sealed, the ground gas in the well continuously penetrates into the switchgear. At the same time, due to the large temperature difference inside and outside the switchgear, it penetrates The ground gas in the switchgear is atomized to form condensation, which adheres to the inner wall of the switchgear and gradually forms water droplets. The water droplets drop on the "T" head of the cable, resulting in insulation aging and flicker discharge, resulting in long-term operation. , there will inevitably be faults such as single-phase grounding or phase-to-phase short circuit, which will affect the normal power supply

In order to prevent the ground air from penetrating into the switchgear, the commonly used method is to seal the bottom of the switchgear with an iron plate with a thickness of 0.5mm, and then spread plastic paper and charcoal on the iron plate, and the plastic paper is used to isolate the ground air. The charcoal is used to absorb the moisture in the ground air to prevent the water from entering the switchgear and atomizing to form condensation. However, it has been proved by practice that the above method cannot effectively prevent the ground air from penetrating into the switch, and the fault frequency of the switchgear is still relatively high. High, at the same time, the maintenance cost of the iron plate is high, not insulated, and the safety factor of maintenance is low

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