US 12,292,474 B2
Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances
Chengli Li, Suzhou (CN); and Long Chen, Suzhou (CN)
Assigned to Chengli Li, Suzhou (CN)
Filed by Chengli Li, Suzhou (CN)
Filed on Jul. 5, 2023, as Appl. No. 18/347,012.
Claims priority of application No. 202310790448.7 (CN), filed on Jun. 30, 2023; and application No. 202321691997.0 (CN), filed on Jun. 30, 2023.
Prior Publication US 2025/0004052 A1, Jan. 2, 2025
Int. Cl. G01R 31/327 (2006.01); G01R 31/52 (2020.01); H02H 1/04 (2006.01)
CPC G01R 31/3278 (2013.01) [G01R 31/52 (2020.01); H02H 1/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A leakage current detection and interruption device, comprising:
power supply lines including a first current-carrying line and a second current-carrying line, having an input end and an output end; and
a leakage current detection module, including a first leakage current detection line, a second leakage current detection line, and at least one resistive element and/or at least one semiconductor element, configured to detect a leakage current signal on the first current-carrying line or the second current-carrying line and to generate a leakage fault signal in response to detecting the leakage current signal,
wherein the first leakage current detection line and second leakage current detection line are electrically insulated from each other, and respectively cover one of the first current-carrying line and the second current-carrying line, and wherein the at least one resistive element and/or the at least one semiconductor element is coupled in series between the first leakage current detection line and the second leakage current detection line to form a current path, for detecting an open circuit fault in the leakage current detection module.