Electric leakage protecting device with arc detection function, and electric power consumption equipment

Abstract

The invention discloses an electric leakage protecting device with an arc detection function, and electric power consumption equipment. The electric leakage protecting device is provided with a power circuit, a controller, a switching circuit, an electric leakage detecting circuit, a series arc detecting circuit and a parallel arc detecting circuit. The controller detects the electric leakage fault and the arc fault of an AC input power supply through the electric leakage detecting circuit, the series arc detecting circuit and the parallel arc detecting circuit; and furthermore when a random fault is detected, the controller makes the switching circuit switch off an AC power supply line between the AC input power supply and an AC load, thereby performing fault protection. The electric leakage protecting device can realize the following functions on the electric power consumption equipment: live detection on a housing and a ground line, reverse-direction connection detection on a live line and the ground line, and detection protection for abnormities such as series arc and parallel arc. The electric leakage protecting device has advantages of realizing comprehensive protection for electric power consumption safety of the electric power consumption equipment, settling a problem of error power-off on the electric power consumption equipment caused by malfunction of an existing electric leakage protecting product, and remarkably improving operation reliability of the electric power consumption equipment.

Description

technical field [0001] The invention belongs to the technical field of fault detection, and in particular relates to a circuit design for detecting and protecting leakage faults and arc faults of AC power supply lines. Background technique [0002] At present, the situation of my country's power grid is complex, and there are many potential safety hazards. Problems such as incorrect wiring of household electrical sockets, poor grounding, and low-quality wires will cause abnormalities in the AC power supply connected to household appliances, which in turn affects the use of household appliances. Electrical safety not only poses a fatal threat to the normal operation of home appliances, but even endangers the personal safety of users, leading to personal electric shock accidents. [0003] When household appliances are connected to the AC power grid, there are two most common power supply faults: one is arc fault; the other is leakage fault. The arc fault is usually caused by ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of single function of the existing leakage protection device, the present invention proposes a leakage protection device with arc detection function, which can implement comprehensive detection and timely protection for arc faults and leakage faults that occur in the electrical environment of household appliances

Images