Safety electric power device and a safety electric power method

Abstract

The invention discloses a s afety electric power device. the device includes a power switch module, The control module controls the power switching module to isolate the neutral point of the AC circuit from the ground when the circuit parameters of the AC circuit detected by the first detection module satisfy the preset leakage protection condition. The first detection module is connected with theAC circuit and the control module is respectively connected with the power switching module and the first detection module. The neutral point grounding of three-phase power system, if the personnel touch the aging part of the line, will form a loop through the aging part of the line and the neutral point, and will be damaged by electric shock. The neutral point of the AC circuit is isolated fromthe ground by the power switching module, so that even if a person touches the aging part of the circuit, the circuit can not be formed into a loop, thereby avoiding electric shock. Similarly, if there is a direct metallic short circuit between the phase line and the ground, no electric spark will be generated due to no voltage difference, and therefore no electric fire will be caused. The invention also discloses a method for safely using electricity, which has the beneficial effects.

Description

technical field [0001] The invention relates to the technical field of leakage protection, in particular to a device for safely using electricity and a method for safely using electricity. Background technique [0002] As the service life of electrical lines increases, the insulation damage caused by line aging increases year by year, and the older the line, the more serious the damage. Once a person accidentally touches a wire with damaged insulation, it is easy to cause electric shock casualties. At the same time, the aging and short circuit of electrical lines is also one of the important reasons for electrical fire accidents. Traditional electrical protection devices such as leakage protection switches and air switches can only start protection actions when the leakage reaches the limit and short-circuit occurs, so it is impossible to avoid electric shock casualties and electrical short-circuit fires. [0003] Therefore, it is a technical problem that those skilled in ...

AI Technical Summary

Problems solved by technology

Traditional electrical protection devices such as leakage protection switches and air switches can only start protection actions when the leakage reaches the limit and short-circuit occurs, so it is impossible to avoid electric shock casualties and electrical short-circuit fires

[0003] Therefore, how to avoid situations such as electric shock and electrical short-circuit fires caused by line aging and insulation damage is a technical problem that those skilled in the art need to solve at present.

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