Electric leakage switch having FSK communication function
A technology of leakage switch and function, which is applied in the direction of electrical components, circuit devices, emergency protection circuit devices, etc., can solve the problems that leakage switches cannot communicate, and cannot realize leakage value networking and early warning, etc., and achieve simple circuits and improve detection accuracy Effect
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[0028] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
[0029] As shown in the figure, the present invention provides a leakage switch with FSK communication function, which is installed in the power grid to protect users and users from leakage, including current transformer T, amplifier circuit, trip circuit, FSK circuit and control Circuit; current transformer T includes a hollow magnetic ring and a secondary coil wound on the hollow magnetic ring. The power line of the power grid passes through the hollow magnetic ring and is connected to the user end, and the secondary coil is connected to the amplifying circuit. Output the leakage current signal of the power grid; it also includes a test switch S and a correction resist...
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