Protection type high-low voltage power distribution cabinet and protection method thereof

Abstract

The invention discloses a protection type high-low voltage power distribution cabinet and a protection method thereof, and the device comprises a cabinet body, and the bottom of the cabinet body is provided with a dehumidifying mechanism. The dehumidifying mechanism comprises a movable bottom plate, a fixed supporting column, an electric telescopic rod, a rubber air bag, a soft air pipe, a through hole, a humidity induction switch, an elastic metal rod, a tooth groove, a linkage rod, an impact ball, an annular rubber body, an air suction channel, a suction hole, an L-shaped connecting cavity, a first spring, an iron block, an electromagnet, a movable push rod, a stop block, a contraction key switch, an extension key switch, and a limiting block. When the side plate of the cabinet body is electrified due to insulation failure and electric leakage of electrical apparatus elements in the cabinet body, an elastic rubber net is used for preventing external personnel from directly contacting the side plate of the cabinet body to cause electric shock danger, and when the elastic rubber net is extruded, an insulating plate is pushed, so that a positive and negative conducting strip group at the tail end abuts against the inner wall of a butt joint groove; as long as electric leakage occurs, a signal lamp emits light, thereby facilitating external personnel to know that the cabinet body is electrified and is dangerous.

Description

technical field [0001] The invention relates to the technical field of high and low voltage power distribution cabinets, in particular to a protective high and low voltage power distribution cabinet and a protection method thereof. Background technique [0002] As the name implies, the high and low voltage power distribution cabinet is the power distribution equipment used for power distribution, control, metering and cable connection in the power supply system. Generally, power supply bureaus and substations use high voltage power distribution cabinets, and then step down the low voltage through transformers. Side leads to the low-voltage power distribution cabinet. [0003] The shortcomings of general high and low voltage power distribution cabinets are: although the cabinet body of general high and low voltage power distribution cabinets has undergone some anti-corrosion and anti-rust treatments, it will gradually rust in the open environment for a long time, especially ...

AI Technical Summary

Problems solved by technology

[0003] The shortcomings of general high and low voltage power distribution cabinets are: although the cabinet body of general high and low voltage power distribution cabinets has undergone some anti-corrosion and anti-rust treatments, it will gradually rust in the open environment for a long time, especially The bottom of the cabinet, generally the bottom of the cabinet is close to the ground, not ventilated, and is more susceptible to erosion by rain and moisture, and the general cabinet is made of some conductive metal materials, so it will be grounded to avoid leakage of internal components As a result, the cabinet body conducts electricity, thereby causing the risk of electric shock to personnel, but only relying on grounding treatment cannot fully guarantee safety. Once the grounding device is detached, the cabinet body will conduct electricity due to leakage of internal components, and people in contact will be in danger. When the components in the cabinet burn, the relevant personnel directly use the foam fire extinguisher to flush the inside of the cabinet, which will cause all the components to be affected by the foam, and cause the unburned components to be damaged due to fire extinguishing treatment

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