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:
Nov. 05, 2019
Filed:
May. 24, 2017
Siemens Aktiengesellschaft, Munich, DE;
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
An arc fault detection unit is disclosed for a low-voltage electrical circuit. The arc fault detection unit includes at least one voltage sensor, for periodically determining electrical voltage values of the electrical circuit, connected to an evaluation unit. The evaluation unit is designed such that a first half of a first number of voltage values is continuously summed to form a first partial sum and the second half of the voltage values is continuously summed to form a second partial sum and a difference of the two partial sums is calculated. Either as one alternative the difference or the amplitude of the difference is compared with a first threshold value and if the value is exceeded, an arc fault detection signal is output; or as a second alternative the difference is compared with a second threshold value and if the value is undershot, an arc fault detection signal is output.