Electric leakage protection device

Abstract

The invention discloses an electric leakage protection device, comprising: an obtaining module, which is used for obtaining the current leakage insulation value of an electric circuit; a control module, configured to control the main switch of the electrical circuit to be turned off when the current leakage insulation value is less than or equal to the insulation safety value; and also used for controlling the main switch to be closed when the current leakage insulation value is greater than the insulation safety value; a display module for displaying a state corresponding to the current leakage insulation value. the invention displays the leakage state of the electric circuit in real time by a display module, As that leakage insulation value decrease, The display module can display the state corresponding to the current leakage insulation value in real time, so as to achieve the purpose of early warning and ensure the safe use of the electric circuit. At the same time, the leakage protection device can be automatically reset after the leakage insulation value is restored to the insulation safety value, so that the electric circuit can be turned on and the early warning of the display module can be lifted, thereby improving the reliability and safety of the leakage protection.

Description

technical field [0001] The invention relates to the field of leakage protection, in particular to a leakage protection device. Background technique [0002] Due to the long-term use of electrical lines or equipment, when they are affected by factors such as extrusion damage and animal bites, insulation damage will occur. Once the human body touches these insulation damage parts, it will form a short circuit to the ground and leakage will occur, which will cause serious damage to personal safety. threaten. In addition, for electrical lines or equipment, the cause of short circuit to ground may also be the release of energy caused by high temperature, arc, etc. If these energy is not removed in time, it may cause an electrical fire. The leakage protection device is an important protection device that disconnects the high-voltage circuit in time when the electrical circuit or equipment is short-circuited to the ground to prevent personal electric shock. [0003] It is underst...

AI Technical Summary

Problems solved by technology

[0003] It is understandable that when the insulation of electrical lines or equipment is damaged, the leakage insulation value will decrease. The existing leakage protection devices generally trigger the protection function directly when the leakage insulation value reaches or falls below the insulation safety value, cutting off the entire line. In the process of reducing the leakage insulation value of electrical lines, synchronous early warning cannot be realized, so that the staff cannot detect the reduction of line insulation value in advance and take protective measures in time, making the safety and reliability of the existing leakage protection device lower

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