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.:
Date of Patent:
Feb. 11, 2020
Filed:
Sep. 28, 2017
Chengli LI, Suzhou, CN;
Chengli Li, Suzhou, CN;
Shengyun Nie, Suzhou, CN;
Chengli Ll, Suzhou, CN;
Abstract
A power cord leakage current detection and protection device, including a switch unit configured to control an electrical connection between an input end and an output end of the device; a leakage current protection unit, which includes a switch drive module and a leakage current detection module, the switch drive module configured to control the switch unit based on a leakage current signal detected by the leakage current detection module, wherein the leakage current detection module includes a leakage current detection line configured to detect whether a leakage current is present on a first power supply line and/or a second power supply line, and a signal feedback line configured to detect whether the leakage current detection line has an open circuit; and a test unit, including a test switch, coupled to the a leakage current protection unit, wherein when the test switch is closed, the switch drive module controls the switch unit based on a signal on the signal feedback line.