公开(公告)号：WO2014102445A8

公开(公告)日：2014-11-06

申请号：PCT/FI2012051308

申请日：2012-12-28

Applicant: ABB OY

Inventor： TAKALA MARKO ,  KENTALA TERO ,  MATTLAR HARRI ,  KÄHKIPURO MATTI ,  RANTANEN TOMMI

IPC: H02H9/04 ,  H01T1/12 ,  H01T1/14 ,  H02H7/24

CPC classification number: G01R31/2827 ,  G01R31/013 ,  H01C7/12 ,  H02H3/05 ,  H02H3/20

Abstract: The invention relates to a method and an arrangement for determining an end-of-life of an overvoltage protection element (2) by determining (101) a predefined voltage limit based on a nominal voltage, determining (102) a measuring voltage across switch components (5) of the switch arrangement in connection with a switch-off event, and determining (103) that the overvoltage protection element (2) has reached its end-of-life when the measuring voltage is equal to or lower than the predefined voltage limit.

Abstract translation: 本发明涉及一种用于通过基于标称电压确定（101）预定电压极限来确定过压保护元件（2）的寿命终止的方法和装置，确定（102）跨过开关部件 （5），以及当测量电压等于或低于预定电压时确定（103）过电压保护元件（2）已达到其使用寿命 限制。

公开(公告)号：EP2939343A4

公开(公告)日：2016-08-10

申请号：EP12891068

申请日：2012-12-28

Applicant: ABB OY

Inventor： TAKALA MARKO ,  KÄHKIPURO MATTI ,  RANTANEN TOMMI

IPC: H03K17/00 ,  H02H3/02 ,  H03K17/082

CPC classification number: H03K17/082 ,  H02H3/025 ,  H02H3/08