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Leakage protector double test circuit and test method

A technology for leakage protectors and testing circuits, which is applied in the direction of instruments, measuring electricity, and measuring devices, and can solve problems such as hidden dangers of leakage protectors

Pending Publication Date: 2017-01-04
许良炎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a test circuit and test method for electric power safety equipped with a leakage protector state. The first and second test buttons cooperate with each other to form a double test button, so that on-site users and electricians can estimate the leakage more accurately and reliably. The working status of the protector can better solve the above two hidden problems of using leakage protectors

Method used

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  • Leakage protector double test circuit and test method
  • Leakage protector double test circuit and test method

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Embodiment Construction

[0038] The present invention will be described and explained in further detail below with reference to an embodiment and accompanying drawings. It should be understood that the specific implementation described herein is only used to explain the method of the present invention, but the embodiments of the present invention are not limited to this embodiment.

[0039] like Figures 1 to 7 As shown in the figure, a dual test circuit for a leakage protector includes a first test circuit a, a second test circuit b connected in parallel with the first test circuit a, and the second test circuit b includes a second test button SW2, a second test button SW2, a Two test operation indicator LED2 and analog current limiting resistor R2, which also has a diode D2 in anti-parallel with LED2.

[0040] The common input end of the first test circuit a and the second test circuit b is connected to the power input neutral line, and the common output end is connected to the live line of the load...

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Abstract

The invention provides a leakage protector double test circuit and a test method. The leakage protector double test circuit comprises a first test circuit and a second test circuit connected in parallel with the first test circuit. The second test circuit comprises a second test button SW2, a second test operation indicator light LED2 and an analog current limiting resistor R2 which are connected in series, and further comprises a diode D2 which is reversely connected in parallel with LED2. The invention provides a test circuit and a test method for testing the state of a leakage protector of power safety equipment. First and second test buttons match each other to constitute a double test button. Site users and electricians can speculate the working state of a leakage protector more accurately and more reliably. The potential problem of leakage protectors is solved.

Description

[0001] Technical field: [0002] The invention relates to a leakage protector equipped with electric power safety, belongs to the field of low-voltage electrical appliances, and particularly relates to a double testing circuit and a testing method for the leakage protector. Background technique [0003] In the traditional power distribution system, leakage protectors are the most effective equipment to prevent personal electric shock accidents, so it seems that every place where electricity is used is equipped with leakage protectors. However, after installation, it does not mean absolute safety or permanent safety. Like other electrical appliances, the leakage protector is also damaged, or the tripping action of the safety protection function is slow due to aging. Therefore, if it is not regularly checked, Once the leakage protector fails, its leakage tripping protection action cannot be effectively implemented, and a dangerous electric shock accident is prone to occur. see ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 许良炎
Owner 许良炎
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