Overvoltage-undervoltage protection switch with automatic switching-on function and protection method
An automatic closing and protection switch technology, which is applied in the direction of emergency protection device for automatic disconnection, protection for overvoltage response, protection for undervoltage or no voltage response, etc., can solve the problem of automatic closing and circuit failure The single function of the protection device and other problems can achieve good economic benefits, rich functions, and the effect of eliminating grid voltage fluctuations
Inactive Publication Date: 2012-04-11
无锡华阳科技有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide an overvoltage and undervoltage protection switch and protection method with automatic closing function, which effectively solves the defects of circuit protection devices in the prior art that have a single function and cannot be automatically closed
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[0023] In order to solve the defects of single function of circuit protection devices in the current technology and unable to close automatically, the present invention provides an overvoltage and undervoltage protection switch with automatic closing function. The core idea of the invention is: After voltage tripping, when the grid voltage returns to normal voltage, the switch will automatically close the switch, which greatly reduces the follow-up maintenance costs of the product, and this automatic closing device also largely protects personal safety , the product is rich in functions, low in cost, and has good economic benefits.
[0024] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0025] attached figure 1 It is a circuit principle block diagram of the present invention, including a...
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The invention is suitable for the technical field of switch and power supply products and provides an overvoltage-undervoltage protection switch with an automatic switching-on function and a protection method. According to the invention, an overvoltage-undervoltage detection unit detects an overvoltage or undervoltage signal, and inputs the detected overvoltage or undervoltage signal to a control unit; the control unit outputs a tripping control signal to a tripping execution unit for executing the tripping of a switch; and when a voltage is restored to be normal, the detection unit is used for detection through restoring the voltage to be normal and a normal voltage signal is input to the control unit; and the control unit judges whether restoring the voltage to be normal meets a set time parameter requirement or not, if so, a reset control signal is output to a reset execution unit for executing the switching-on of the switch. According to the invention, the switch can be switched on 3 minutes after the voltage is restored to be normal, thereby eliminating the condition of the false switching of the switch caused by voltage fluctuation of a power grid. The overvoltage-undervoltage protection switch of the invention integrates delaying function, an overvoltage-undervoltage protection device and automatic switching function, and has the advantages of multiple functions, low cost and good economic benefits.
Description
technical field [0001] The invention belongs to the technical field of power supply protection switches, and in particular relates to an overvoltage and undervoltage protection switch with an automatic closing function and a protection method. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's quality of life, electronic and electrical products have entered thousands of households, and the safety awareness of protecting people and equipment is gradually strengthening, especially the functions of electronic products used today are becoming more and more important. , the field of application of electronic products is becoming more and more important, and the protection of equipment is becoming more and more important, and the corresponding requirements for various protectors are also constantly increasing. [0003] At present, the circuit protector has been widely used. By setting the circuit protector,...
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Login to View More IPC IPC(8): H02H3/20H02H3/24H02H3/06
Inventor 朱荣惠
Owner 无锡华阳科技有限公司