Three-phase voltage input protection device
A technology for protecting equipment and three-phase voltage, applied in emergency protection circuit devices, emergency protection devices with automatic disconnection, electrical components, etc. , high reliability and simple structure
Pending Publication Date: 2020-12-22
哈工共哲机器人再制造(安阳)有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a three-phase voltage input protection device with simple structure, low cost and high reliability, which is used to solve the problem of excessive voltage, fluctuation and phase loss of three-phase power supply. , and mistakenly connecting 220V to 380V, etc., to prolong the service life of the equipment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0025] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a three-phase voltage input protection device, which comprises a power supply circuit, a voltage comparison circuit, a three-phase power supply sampling circuit, a driving circuit and a relay circuit, wherein the input end of the power supply circuit is connected with an L1 phase and an L2 phase of a three-phase power supply, the output end of the power supply circuit is connected with the input end of the voltage comparison circuit, and the positive power supply VCC provides direct-current working voltage for a subsequent circuit; the input end of the three-phase powersupply sampling circuit is connected with three phases of a three-phase power supply, and the output ends of the voltage comparison circuit and the three-phase power supply sampling circuit are connected with the input end of the driving circuit; and the output end of the driving circuit is connected with the input end of the relay circuit, and the output end of the relay circuit is connected withthree phases of a three-phase power supply. The three-phase voltage input protection device has the advantages of the simple structure, low cost and high reliability, can solve the problems of over-high voltage, fluctuation, default phase and the like of the three-phase power supply, and prolongs the service life of the device.
Description
technical field [0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a three-phase voltage input protection circuit. Background technique [0002] In the three-phase power line, the voltage is too high, fluctuates or lacks phase faults, which will cause equipment damage. In addition, in actual use, if 220V is connected to 380V by mistake, the equipment will be damaged instantly. Most of the three-phase power protection devices currently on the market have complex structures and high costs, and cannot be well applied. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a three-phase voltage input protection device with simple structure, low cost and high reliability, which is used to solve the problem of excessive voltage, fluctuation and phase loss of three-phase power supply. , and mistakenly connecting 220V to 380V, etc., to...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/04H02H3/253
CPCH02H3/253H02H7/04
Inventor 金曾辉刘峰董永军
Owner 哈工共哲机器人再制造(安阳)有限公司