Circuit breaker and power supply method thereof
A power supply method and circuit breaker technology, applied in the direction of electrical components, circuit devices, emergency power supply protection, etc., can solve problems affecting protection function units, circuit latent danger, instability, etc.
Pending Publication Date: 2021-01-22
柯能(江苏)物联科技有限公司
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Problems solved by technology
However, the current converted by the transformer will fluctuate and be unstable; if the current converted by the transformer is too small, it cannot meet the working current requirements of the protection function unit for calculation and communication, which will affect the timely response of the protection function unit to the abnormal circuit , bringing potential danger to the circuit
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[0029] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.
[0030] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
[0031] I...
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The invention discloses a circuit breaker and a power supply method thereof. The circuit breaker comprises an open circuit control part and an auxiliary part, wherein the open circuit control part comprises a metering function unit and a protection function unit, the auxiliary part comprises an auxiliary part power supply, the metering function unit is connected with a three-phase metering currenttransformer, a three-phase wire is connected with the auxiliary part power supply, and passes through the three-phase metering current transformer, when the auxiliary part power supply works normally, the auxiliary part power supply can provide stable working current for the metering function unit and the protection function unit to ensure that the metering function unit and the protection function unit are in an optimal working state, and when the auxiliary part power supply is abnormal, the current converted by the three-phase protection current transformer provides a working current for the protection function unit to enable the protection function unit to work.
Description
technical field [0001] The invention relates to a circuit breaker, in particular to a circuit breaker and a power supply method thereof. Background technique [0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers typically rely on small currents converted by transformers that are bypassed by three-phase wires to provide power. However, the current converted by the transformer will fluctuate and be unstable; if the current converted by the transformer is too small, it cannot meet the working current requirements of the protection function unit for calculation and communication, which will affect the timely response of the protection function unit to the abnormal circuit , bringing potential danger to the circuit. Contents of the invention [0003] The purpose of the present invention is to solv...
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Login to View More IPC IPC(8): H02H1/06H02H3/08H02H1/00
CPCH02H1/06H02H3/083H02H1/0061
Inventor 李华嵩曾宪文
Owner 柯能(江苏)物联科技有限公司