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.

Date of Patent:
Sep. 04, 2018

Filed:

Mar. 24, 2016
Applicant:

Chengli LI, Suzhou, CN;

Inventors:

Chengli Li, Suzhou, CN;

Guolan Yue, Suzhou, CN;

Wei Zhang, Suzhou, CN;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/16 (2006.01); H02H 3/33 (2006.01); H02H 3/02 (2006.01);
U.S. Cl.
CPC ...
H02H 3/02 (2013.01);
Abstract

A leakage current detection device connected between a power source and a load, which includes a self-testing or leakage current detection selection trigger unit, for selecting a leakage current detection mode or a self-testing mode; a self-testing unit, for periodically generating a simulated leakage current signal in the self-testing mode; and a leakage current detection unit, for detecting a leakage current signal in the leakage current detection mode and detecting the simulated leakage current signal in the self-testing mode. The selection trigger unit further causes the power source to be disconnected from the load when a leakage current signal is detected, and sends a self-testing result to the self-testing unit depending on whether the leakage current detection unit detects the simulated leakage current signal. The self-testing unit displays an indication of the self-testing result.


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