logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12412721 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Dec. 04, 2023

Solid-state circuit breaker and its self-test method

Applicant:

Schneider Electric (China) Co., Ltd., Beijing, CN;

Inventors:

Feng Lu, Beijing, CN;

Haijun Zhao, Beijing, CN;

Jiamin Chen, Beijing, CN;

Jialu Bai, Beijing, CN;

Assignee:

Schneider Electric (China) Co., Ltd., Beijing, CN;

Attorney:

Troutman Pepper Locke LLP

Primary Examiner:

Sean Kayes

Assistant Examiner:

Lucy M Thomas

Int. Cl.
CPC ...
H02H 3/00 (2006.01); G01R 31/327 (2006.01); H01H 83/04 (2006.01); H02H 1/00 (2006.01); H02H 3/04 (2006.01); H02H 9/08 (2006.01);
U.S. Cl.
CPC ...
H01H 83/04 (2013.01); G01R 31/3275 (2013.01); H02H 1/0007 (2013.01); H02H 3/044 (2013.01);
Abstract

According to an embodiment of the present disclosure, there is provided a solid-state circuit breaker and its self-test method. The solid-state circuit breaker comprises an input end and an output end, the input end being adapted to be connected to a mechanical switch; a first switching device connected between the input end and a first node; a second switching device connected between the first node and the output end; a third switching device and a first resistive element connected in series between the input end and the output end; an auxiliary power branch connected between the first node and a second node; an anti-reverse connection circuit connected between the second node and the input end and between the second node and the output end, and configured to allow a current to flow unidirectionally from the second node to the input end and the output end; a first current sensor configured to sense a current flowing through the second switching device and generate a first current signal; a second current sensor configured to sense a current flowing through the auxiliary power branch and generate a second current signal; and a control unit configured to determine operation states of the first switching device and the second switching device based on the first current signal and the second current signal.

Find Patent Forward Citations

Loading…