Circuit protected by vacuum circuit breaker using over-current sectional voltage protector
A vacuum circuit breaker and protection circuit technology, which is applied to emergency protection circuit devices, emergency protection circuit devices, circuit devices and other directions for limiting overcurrent/overvoltage, so as to reduce the overvoltage between phases, improve the service life, and ensure reliable protection. Sex-enhancing effect
Active Publication Date: 2017-11-24
ANHUI SANHE ELECTRIC POWER TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide an overcurrent segmented voltage protector protection circuit for a vacuum circuit breaker, which solves the existing problems
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0018] see figure 1 As shown, the present invention is an overcurrent segmented voltage protector protection circuit for a vacuum circuit breaker, including a first discharge branch 3, a third discharge branch 5, a second discharge branch 6, and a backup discharge circuit 2 ,
[0019] The first discharge branch 3, the second discharge branch 6 and the third discharge branch 5 are connected in parallel at the output end of the power supply main circuit 1;
[0020]...
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The invention discloses a circuit protected by a vacuum circuit breaker using an over-current sectional voltage protector, and belongs to the technical field of appliance protection. The circuit includes a first discharge branch line, a third discharge branch line, a second discharge branch line and a discharge spare line, wherein the first discharge branch line, the second discharge branch line and the third discharge branch line are connected in parallel to an output end of a power supply main line, and a second current monitoring comparator and a non-linear resistance are disposed at a current input end and a current output end of the first discharge branch line separately; the discharge spare line is connected with the first discharge branch line in parallel, and two end of the discharge spare line is electrically connected to the power supply main line and a grounding line separately; a first current monitoring comparator is arranged on the power supply main line, and a starting line is arranged between a third support foot of the first current monitoring comparator and the grounding line. According to the circuit protected by the vacuum circuit breaker using the over-current sectional voltage protector, mutual protection can be achieved through a discharge gap and the non-linear resistance, and the clockwise current generated by an instantaneous overload voltage is discharged through the arranged spared line, so that the circuit and an appliance are protected.
Description
technical field [0001] The invention belongs to the technical field, in particular to an overcurrent segmented voltage protector protection circuit for a vacuum circuit breaker. Background technique [0002] The overvoltage protection device is a new type of overvoltage protector, which is mainly used in power generation, power supply and enterprise power consumption systems. In addition to voltage protection, it can also limit the operating overvoltage of the power system, and can reliably limit the overvoltage between phases and phases. The overvoltage protection device product has the protection function between phases and phases, which successfully solves the problem of equipment insulation damage caused by the operation overvoltage caused by the vacuum switch breaking. It has made great contributions to my country's electric power industry. Contents of the invention [0003] The purpose of the present invention is to provide an overcurrent segmented voltage protecto...
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IPC IPC(8): H02H9/04H02H9/06
CPCH02H9/04H02H9/06
Inventor 肖飒
Owner ANHUI SANHE ELECTRIC POWER TECH