Short-circuit arc light eliminating circuit for live line

Abstract

The invention discloses a short circuit arc light eliminating circuit for a live line. The circuit comprises an MCU, an electric leakage mutual inductor, a relay A, a relay B and a detector. The electric leakage mutual inductor is installed on an AC live wire. The signal output end of the electric leakage mutual inductor is connected with the MCU. One end of the relay A is connected with the AC live wire, and the other end of the relay A is connected with a resistor R. The beneficial effects of the invention are as follows: the circuit protection and arc extinguishing functions are integratedon a circuit chip, and the circuit can make a response to possible short circuit or electric shock, thereby reducing the electric shock feel or avoiding the electric shock feel, and reducing the dangers of electric shock of a human body; 2, no arc spark is generated when the live wire is short-circuited, and the fire hazard caused by electricity utilization safety is reduced; 3, the device is an integrated product, the circuit protection function and the incoming arc function can be realized at the same time without other devices, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a live line short-circuit arc light elimination circuit. Background technique [0002] With the popularization and application of household appliances, it brings a lot of convenience to life, but it also brings a lot of safety hazards. According to authoritative data, electric shock accidents caused by sockets are on the rise year by year. According to the data in 2014, the death toll of electric shock accidents reached 8,000, and 80% of the accidents were caused by electrical short circuits. [0003] After the number of times of use of the traditional socket reaches the service life, the elasticity of the copper sheet in the socket is not enough to make it poor contact, which will cause the temperature of the socket itself to rise. When the limit temperature is exceeded, the plastic part of the socket will melt, which will easily cause the live line and zero line to be g...

AI Technical Summary

Problems solved by technology

[0008] The main disadvantages are as follows: 1. Although the leakage protection device can cut off the power supply in a short time, the general low-voltage lines have leakage currents to varying degrees. As long as the combined value of the leakage current does not reach the operating current setting value of the protector, the protector won't move

[0009] 2. The temperature protection device in the socket has no effective treatment measures for arc sparks, which are also one of the causes of fires

[0010] 3. The leakage protection device cannot be detected by general technology. At the same time, the cost of the leakage protection device is much higher than that of a single socket. Frequent inspection and maintenance are required to ensure that the leakage protection device is in working condition

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