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. 02, 2021
Filed:
Dec. 09, 2016
Abb Power Grids Switzerland Ag, Baden, CH;
Håkan Westerlund, Svärdsjö, SE;
Lennart Stenström, Ludvika, SE;
ABB POWER GRIDS SWITZERLAND AG, Baden, CH;
Abstract
A monitoring arrangement for monitoring a surge arrester which is connected to a live wire of a power network at a connection point in order to protect an electrical apparatus against incoming surges, the monitoring arrangement including: an analogue measuring circuit for sensing a current impulse through the surge arrester caused by an incoming surge in the live wire and producing a corresponding analogue measuring signal; an analog-to-digital converter for converting the measuring signal into digital signals; and an electronic processing device configured: to establish, based on the digital signals, a voltage peak value representing the highest voltage at the connection point during the incoming surge; and to establish, based on the voltage peak value and by means of a calculation model or look-up table, a maximum-voltage value representing an estimated maximum voltage across the electrical apparatus during the incoming surge.