Circuit breaker and its opening and closing control method and control device
A control method and circuit breaker technology, applied to circuits, electrical components, electrical switches, etc., can solve problems such as contact ablation, large arc, and contact wear, and achieve the effect of improving safety
Active Publication Date: 2022-02-11
SHENZHEN MANTUNSCI TECH CO LTD
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Problems solved by technology
At this time, sparks or peak currents will be generated when the switch is closed, and contact wear will occur. In addition, when the circuit breaker is opened with load, at this time, because the AC current is a sine wave, the timing of opening is just near the current peak value. A relatively large arc will be generated, which will ablate the contacts, and the generated arc will also affect the life of the arc extinguishing element
Method used
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[0039] 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 of the embodiments of the present invention, not all of them. 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.
[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0041] In the present in...
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The invention discloses a circuit breaker and its opening and closing control method and control device. The circuit breaker opening and closing control method includes the following steps: when receiving the opening and closing operation instruction of the circuit breaker, obtaining the last opening and closing operation of the circuit breaker The travel time of the opening and closing action, the opening and closing action command includes the opening and closing command or the closing command; according to the travel time of the last opening and closing action of the circuit breaker, the current opening and closing action time of the circuit breaker is estimated; The zero time of the current nearest power supply, and according to the zero time of the current nearest power supply and the current opening and closing action time of the circuit breaker, determine the opening and closing start time, and at the beginning of the opening and closing The opening and closing action is carried out at all times, so that the opening and closing action of the circuit breaker is completed at the zero point when the power supply is connected. Thereby, the safety when the circuit breaker performs opening and closing actions is improved.
Description
technical field [0001] The invention relates to the technical field of circuit breaker control, in particular to a circuit breaker and its opening and closing control method and control device. Background technique [0002] At present, during the opening and closing process of the AC circuit breaker, because the closing and opening times are random, the AC voltage is a sine wave, and the timing of closing may be just when the voltage is near the voltage peak value. At this time, sparks or peak currents will be generated when the switch is closed, and contact wear will occur. In addition, when the circuit breaker is opened with load, at this time, because the AC current is a sine wave, the timing of opening is just near the current peak value. A relatively large arc will be generated, which will ablate the contacts, and the generated arc will also affect the life of the arc extinguishing element. Contents of the invention [0003] The main purpose of the present invention ...
Claims
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IPC IPC(8): H01H9/56
CPCH01H9/56
Inventor 魏首勋
Owner SHENZHEN MANTUNSCI TECH CO LTD