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. 13, 2018
Filed:
Apr. 01, 2016
Solarcity Corporation, San Mateo, CA (US);
Alex Mayer, San Francisco, CA (US);
Sandeep Narla, San Jose, CA (US);
SolarCity Corporation, San Mateo, CA (US);
Abstract
An indicator device includes a housing configured to be coupled to positive and negative DC wire lines that supply power from an energy generation source to an inverter. The indicator device further includes a current sensor for measuring a current level on the positive and negative DC wire lines, and voltage sensors for measuring a first voltage across the positive and negative DC wire lines, a second voltage across the positive DC wire line and a ground terminal, and a third voltage across the negative DC wireline and the ground terminal. A circuit block compares the measured current level to one or more threshold current levels, and further compares the measured first, second and third voltages to one or more threshold voltage levels, and in response provides an output signal. A visual indicator receives the output signal from the circuit block, and in response provides a visual indication of whether voltage and current levels on the positive and negative DC wire lines are at levels that may harm humans.