Global Patent Index - EP 0911842 A3

EP 0911842 A3 2000-04-05 - Method for monitoring a tap changer

Title (en)

Method for monitoring a tap changer

Title (de)

Verfahren zur Funktionsüberwachung von Stufenschaltern

Title (fr)

Procédé de surveillance d'un sélecteur de prises

Publication

EP 0911842 A3 (DE)

Application

EP 98116788 A

Priority

DE 19746574 A

Abstract (en)

[origin: DE19746574C1] The method involves detecting a measurement value representing the actual state of the monitored switch at short time intervals. The position of the switch is detected during changeover and the detected values combined into a position. The overall position or time range is divided into sub regions corresp. to successive time functions during a changeover. A characteristic value of the measurement value in each sub region is determined using defined computational procedures and is compared with a data set in non-volatile memory and classified so that a classification value is associated with it as an identifier. The identifier is processed, stored and used to generate identity dependent messages.

IPC 1-7 (main, further and additional classification)

H01H 9/00

IPC 8 full level (invention and additional information)

H01F 29/04 (2006.01); G01R 31/02 (2006.01); G05F 1/147 (2006.01); H01H 9/00 (2006.01); H01H 71/04 (2006.01); H02J 3/00 (2006.01); H02J 13/00 (2006.01)

CPC (invention and additional information)

H01H 9/0005 (2013.01); H01H 2009/0061 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19746574 C1 19990204; AT 251793 T 20031015; BG 102769 A 19990430; BG 63481 B1 20020228; BR 9805104 A 19991109; BR 9805104 B1 20101214; CA 2250625 A1 19990422; CN 1109945 C 20030528; CN 1222695 A 19990714; CZ 295387 B6 20050713; CZ 9803289 A3 19990512; DK 0911842 T3 20040216; EP 0911842 A2 19990428; EP 0911842 A3 20000405; EP 0911842 B1 20031008; ES 2203862 T3 20040416; HK 1020800 A1 20040206; HU 221833 B1 20030128; HU 9802215 A2 19990528; HU 9802215 A3 20010129; HU 9802215 D0 19981228; JP H11225437 A 19990817; RU 2199809 C2 20030227; US 6100674 A 20000808

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