公开(公告)号：US20180174719A1

公开(公告)日：2018-06-21

申请号：US15572635

申请日：2015-05-11

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： AXEL PREIDEL

IPC: H01C7/12 ,  H01C1/16 ,  H02H1/00 ,  H02H9/04 ,  G01R19/165 ,  G01K13/00

CPC classification number: H01C7/12 ,  G01K13/00 ,  G01R19/1659 ,  H01C1/16 ,  H01C7/108 ,  H02H1/0007 ,  H02H9/04 ,  H02H9/044

Abstract: An overvoltage arrester system for protecting an electrical installation from an overvoltage or impermissible amount of energy, includes a first metal oxide arrester in a first current path and a second metal oxide arrester in a second current path connected in parallel with the first current path. In order to ensure that the overvoltage arrester system is suitable for arresting especially high amounts of energy, in particular from pulsed energy inputs, while at the same time being especially fail-safe, in a current range, a characteristic voltage/current curve of the first metal oxide arrester has a lower voltage than a characteristic voltage/current curve of the second metal oxide arrester at the same current, and the first current path has a switch. An arrangement having an electrical installation and the overvoltage arrester system is also provided.