Three-pole leakage protector and working method thereof
A technology of leakage protector and leakage current, which is applied in the direction of emergency protection circuit devices, automatic disconnection emergency protection devices, electrical components, etc., can solve problems such as cumbersome operations, and achieve the effect of reducing the difficulty of operation
Inactive Publication Date: 2016-08-24
YUYAO JIARONG ELECTRONICS & ELECTRIC APPLIANCE CO LTD
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Problems solved by technology
When it is necessary to change the type conversion under different power consumption environments, it needs the professional operation of professionals to re-convert the settings, and the work is cumbersome
Method used
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[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0028] Such as figure 1 As shown, the embodiment of the present invention provides a three-pole leakage protector, including:
[0029] The ground wire leakage detection part 11 is used to detect the ground wire leakage current, and / or the voltage between the neutral wire and the ground wire;
[0030] The logic analysis unit 12 is connected to the ground wire leakage detection unit 11, and is used to determine whether the ground wire leakage current is greater than a preset current threshold, and whether the voltage between the neutral wire and the ground wire is greater than a preset voltage threshold;
[0031] The tripping control part 13 is connected with the logic ana...
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The invention discloses a three-pole leakage protector and a working method thereof, relates to the field of electrical technologies. The three-pole leakage protector and the working method thereof can be automatically adapted to various power utilization environments, complicated debugging of a professional is not needed, and the operation difficulty is greatly reduced. The three-pole leakage protector comprises a ground wire electric leakage detection part, a logic analysis part and a release control part, wherein the ground wire electric leakage detection part is used for detecting a leakage current of a ground wire and / or a voltage between a null line and the ground wire, the logic analysis part is connected with the ground wire electric leakage detection part and is used for determining whether the leakage current of the ground wire is greater than a preset current threshold value or not and whether the voltage between the null line and the ground wire is greater than a preset voltage threshold value or not, and the release control part is connected with the logic analysis part and is used for controlling a load corresponding to the three-pole leakage protector to be powered off under the condition that the leakage current of the ground wire is determined to be greater than the preset current threshold value and / or the voltage between the null line and the ground wire is determined to be greater than the preset voltage threshold value by the logic analysis part.
Description
technical field [0001] The invention relates to an electrical safety device, in particular to a three-pole earth leakage protector and its working method. Background technique [0002] The protection function of the three-pole leakage protector means that under the premise of normal power supply, when the ground line is abnormally charged or the load leaks, it can cut off the load power supply circuit. [0003] Existing three-pole leakage protectors are divided into voltage type and current type, which can perform leakage protection through voltage detection and current detection respectively. When it is necessary to change the type conversion under different power consumption environments, it needs the professional operation of professionals to re-convert the settings, and the work is cumbersome. Contents of the invention [0004] The purpose of the present invention is to overcome the above disadvantages, aiming to provide a three-pole earth leakage protector and its wo...
Claims
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IPC IPC(8): H02H3/32H02H5/04
CPCF24H9/2014H02H3/325H02H5/00H02H5/04
Inventor 钱加灿
Owner YUYAO JIARONG ELECTRONICS & ELECTRIC APPLIANCE CO LTD