Liquid level circuit breaker

Abstract

The invention provides a liquid level circuit breaker. According to the liquid level circuit breaker, the circuit breaker of the terminal equipment automatically trips after the terminal equipment is immersed in water, and meanwhile, an action signal can be sent, so that the previous-stage circuit breaker and the next-stage circuit breaker can be helped to realize tripping power failure, and tripping of the circuit breaker of the terminal equipment is avoided; and under the condition that the incoming line end of the circuit breaker of the terminal equipment is still electrified, the power utilization safety of the current distribution box is ensured, and personal electric shock and potential safety hazards during maintenance of the equipment are avoided.

Description

technical field [0001] The invention relates to a controller, in particular to a liquid level circuit breaker. Background technique [0002] There are usually three direct reasons for the leakage of public electrical equipment such as street lights, traffic lights, and bus stop billboards: [0003] (1) The aging of the line not only causes the loss of electric energy, but also endangers the safety of pedestrians; [0004] (2) The insulation treatment of the cable joints is not careful enough, and leakage occurs due to rainwater soaking in low-lying road sections: [0005] (3) Excavation of the road surface may easily cause damage to the power supply cable of the street lamp and cause leakage of electricity. [0006] And the root cause of causing casualties is that the residual current protection circuit breaker (ie leakage switch) cannot be used temporarily in the power distribution system of most public electrical equipment at present. As a leakage protection device, the...

AI Technical Summary

Problems solved by technology

[0003] (1) The aging of the line not only causes the loss of electric energy, but also endangers the safety of pedestrians;

[0004] (2) The insulation treatment of the cable joints is not careful enough, and leakage occurs due to rainwater soaking in low-lying road sections:

[0005] (3) Excavation of the road surface may easily cause damage to the power supply cable of the street lamp and cause leakage

However, it is precisely because of the sensitive action of the leakage switch that frequent misoperations may occur in complex external environments after installation, resulting in the inability of public electrical equipment such as street lamps and traffic lights to achieve normal functions.

[0007] In the prior art, leakage switches with low sensitivity are installed for the terminal distribution lines of public electrical equipment, so that after the terminal distribution lines of low-lying roads are soaked by rainwater, even if the leakage switches of the terminal distribution lines trip immediately, but for The upper-level distribution circuit breaker powered by the terminal distribution line is still charged. When the water level keeps rising, it will be soaked to the terminal of the terminal distribution line connected to the upper-level distribution circuit breaker, which will still cause safety hazards to passers-by or maintenance personnel.

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