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A new leakage protection method and device with fire and zero line identification function

A technology for identifying devices and protective devices, which is applied in the direction of automatic disconnection emergency protection devices, circuit devices, emergency protection circuit devices, etc., which can solve the problem of no power, fire and neutral wire connection error prompts or corrections, etc., to improve anti-interference ability and reliability, ensuring normal operation, and eliminating hidden dangers of accidents

Active Publication Date: 2018-04-24
吴伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing leakage protector does not have the function of prompting or correcting the wrong connection of the power supply and neutral wire

Method used

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  • A new leakage protection method and device with fire and zero line identification function
  • A new leakage protection method and device with fire and zero line identification function
  • A new leakage protection method and device with fire and zero line identification function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] image 3 It is embodiment 1 of the method and device of the present invention. image 3 structure and figure 2 Similar to the function and effect of figure 2 The description is the same. The difference is that the output of the live and neutral line identification device 1 includes a switch or contact with one pole and two throws, one pole is connected to the surface leakage signal pickup device 2, and the two throws are respectively connected to the electrical live wire L' and the electrical neutral wire N'. When the input terminal of the fire-neutral line identification device 1 is connected to the neutral wire N' of the electrical appliance and the live wire L' of the electrical appliance is connected to the neutral wire N of the power supply or the neutral wire N' of the electrical appliance is connected to the live wire L of the power supply due to the reverse connection of the live neutral wire of the power supply, the live neutral line When the identificatio...

Embodiment 2

[0060] Figure 4 It is embodiment 2 of the method and device of the present invention. Figure 4 structure and figure 2 Similar to the function and effect of figure 2 The description is the same. The difference is that the input terminal of the fire-neutral line identification device 1 is connected to the electrical zero line N', and the output includes a fire-neutral line changeover switch 4 composed of a two-knife two-throw switch or contacts connected in series in the main circuit. When the live and neutral wires of the power supply are reversed so that the live wire L' of the electrical appliance is connected to the neutral wire N of the power supply or the neutral wire N' of the electrical appliance is connected to the live wire L of the power supply, the fire and neutral wire identification device 1 operates, and the fire and neutral wire conversion composed of two poles and two throw switches The action of the switch 4 makes the live wire L' of the electrical appli...

Embodiment 3

[0063] figure 2 together with Figure 5 and Image 6 (a) Embodiment 3 constituting the method and apparatus of the present invention. like figure 2 The shown leakage protection device of the present invention with fire and zero line identification function, wherein the structure of the fire and zero line identification device 1 is as follows Figure 5 As shown: the current limiting element Z and the light emitting element B1 (neon tube) are connected in series, one end is connected to the electrical live wire L' or the electrical neutral wire N', and the other end is connected to the touch electrode A. The touch electrode A is a conductor embedded in the surface of the toggle handle of the toggle reset switch K, or a waterproof jacket made of conductive rubber that is sleeved on the push button reset switch K button, such as Image 6 As shown in (a), the user must toggle or press the reset switch K when using the leakage protection device, so as to touch the touch electr...

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Abstract

A leakage protection method and device with a fire-neutral identification function, the fire-neutral identification device 1 is used to identify the live wire and the neutral wire of the input power supply, and once it is found that the hot-neutral wire of the power supply is wrongly connected, immediately or indirectly adjust the electrical live wire L The wiring of the neutral wire N of the electrical appliance and the live wire L of the power supply and the neutral wire N of the power supply; or adjust the wiring of the surface leakage signal pickup device 2; or make the main circuit switch K unable to close or disconnect immediately after closing, thus forcing the user Correct the wiring of the power supply neutral line; make the surface leakage signal pickup device 2 always connect the power supply neutral line N and the electrical appliance surface F, and monitor the potential of the electrical appliance surface F to the power supply neutral line N at any time. Once the surface of the electrical appliance leaks, the leakage signal pickup device 2 immediately pushes the electromagnetic tripping device 3 to disconnect the main circuit switch K and disconnect the electrical appliance from the power source. By applying the method and the device of the present invention, the electric appliance can be effectively protected from electric leakage without grounding the electric appliance, and the hidden danger of electric shock accident can be eliminated.

Description

technical field [0001] The invention relates to an electric leakage protection method and device, in particular to an electric leakage protection method and device with the function of identifying fire and neutral wires. Background technique [0002] Compared with the "Residual Current Device" (RCD) based on the monitoring of residual current, the "Surface Leakage Protection Device" (SLPD) based on the protection of electrical surface leakage can cut off the connection between the electrical appliance and the power supply before the human body touches the leakage object. Change passive "electric shock protection" to active "leakage protection". Patent document 201120482689.8 "Detection and protection system for electric leakage on the surface of electrical appliances" provides a specific implementation plan for "surface leakage protection device". The surface leakage protection device detects the potential difference between the surface of the electrical appliance and the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/32
CPCH02H11/002H02H3/14H02H3/16H02H3/162
Inventor 吴伟
Owner 吴伟
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