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

A technology of leakage protection switch and leakage protection, which is applied in the direction of emergency protection circuit device, protection that responds to fault current, circuit device, etc., can solve the problems of inability to protect against leakage, hurt people with electricity, hurt people with electric shock, etc., and achieve protection The effect of safe electricity use, simple sampling circuit and low production cost

Inactive Publication Date: 2014-06-18
GUANGZHOU BODA ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Example Embodiment

[0018] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Such as figure 1 As shown, the power wall circuit of the leakage protection switch of the present invention includes a voltage divider circuit composed of a resistor R6 and a resistor R7, a diode D3 as a rectifier circuit, a filter capacitor C5 as an output circuit, a Zener diode D4, and a neutral line Input terminal, ground wire input terminal and protection output terminal. The resistor R6 and the resistor R7 are respectively the first voltage dividing part and the second voltage dividing part of the voltage dividing circuit. The first end of the resistor R6 is connected to the cathode of the diode D3, and the anode of the diode D3 is connected to the ground input terminal; The first terminal of R7 is connected to the neutral input terminal; the second terminal of resistor R7 is connected to the second terminal of resistor R6. The second end ...

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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...

Claims

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Application Information

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IPC IPC(8): H02H3/32H02H3/16H02H11/00
Inventor 季建丰唐锡臣
Owner GUANGZHOU BODA ELECTRONICS SCI & TECH
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