Anti electric wall circuit for leakage protection switch and application of the same

Abstract

The invention provides an anti electric wall circuit for a leakage protection switch and application of the same. The anti electric wall circuit for the leakage protection switch and the application of the same comprises a voltage division circuit, a rectifying circuit, an output circuit, a ground wire input end for connecting with a ground wire, a zero line input end for connecting with a zero line and a protection output end for connecting a leakage protection circuit; the voltage division circuit comprises a first voltage division portion and a second voltage division portion; a first end of the first voltage division portion is connected to the ground wire input end, a second end of the first voltage division portion is connected with a second end of the second voltage division portion, a first end of the second voltage division portion is connected with the zero line input end; the second end of the first voltage division portion is connected with the input end of the output circuit, the output end of the output circuit is connected with the protection output end; the rectifying circuit is connected between the ground wire input end and the input end of the output circuit in a series connection mode. According to the anti electric wall circuit for the leakage protection switch and the application of the same, a traditional leakage protection function is ensured; meanwhile, anti electric wall function is added, namely a ground wire electric protection function, a ground wire broken wire protection function, and a live line zero line reverse connection protection function, and safety in electricity use is ensured to a greater extent.

Description

technical field [0001] The invention relates to the field of electric leakage protection circuits, in particular to an electric wall circuit applied to electric leakage protection switches. Background technique [0002] The traditional leakage protection switch generally uses a leakage protection circuit to detect the current. When the leakage current is too large, the leakage protection circuit controls the operation of the circuit breaker to disconnect the live wire from the load electrical appliance. But this method only provides power-off protection for tripping when the load leaks, and there is no protection for ground faults, such as ground wires being charged, electrical equipment casings being charged, or hot water from water heaters being charged and hurting people. Because the traditional leakage protection switch does not have the function of ground wire protection, there are still relatively large potential safety hazards. On the other hand, if the ground wire i...

AI Technical Summary

Problems solved by technology

Because the traditional leakage protection switch does not have the function of ground wire protection, there are still great potential safety hazards

On the other hand, if the ground wire is disconnected and is not connected to the earth, the ground wire loses its original protective function. Once the equipment load leaks to the electrical casing or the water heater, it will cause them to be charged and hurt people. The traditional leakage protection Switches cannot remove this safety hazard

Third, if the live wire and the neutral wire are reversed, the neutral wire is turned off by the power switch, and the electrical appliance is still connected to the live wire. People think that the power is turned off, and when they go to repair the electrical appliance, they will get an electric shock and hurt people if they touch the inside of the electrical appliance. At this time, the leakage protector cannot play the role of leakage protection because there is no power supply (Note: The correct way is to unplug the power plug and repair the electrical appliance, but many ordinary users do not pay attention to this detail, or sometimes misuse)

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