EP 2811492 B1 20160525 - Surge arrester provided with a device signalling the degraded condition thereof
Title (en)
Surge arrester provided with a device signalling the degraded condition thereof
Title (de)
Überspannungsableiter mit Vorrichtungssignalisierung seines degradierten Zustands
Title (fr)
Limiteur de surtension pourvu d'un dispositif de signalisation de l'état dégradé de celui-ci
Publication
Application
Priority
IT MI20130915 A 20130604
Abstract (en)
[origin: EP2811492A1] A surge arrester is disclosed, comprising a first and a second terminal (1, 2) for connection to the active leads of an electric plant, between which a protection element (3) is inserted, provided with a pair of electrodes (4) electrically connected to said connection terminals, said protection element (3) being temperature-degradable depending on time, and between said first terminal (1) and an electrode (4) of the protection element (3) a disconnector being provided, the arrester further comprising a signalling device (30-39) of the state of degradation of said protection element (3), comprising at least movable means (30, 33), having a pressure element (30a) being biased by elastic means (35) against a cushion (H) made of temperature-variable viscosity material, signalling means (36) being connected with said movable means, which signalling means (36) make evident the level of degradation depending on their displacement caused by the sinking of said pressure element (30a) of said movable means (30) into said cushion (H).
IPC 8 full level
H01T 1/12 (2006.01); H01C 7/12 (2006.01); H01H 37/76 (2006.01); H01T 1/14 (2006.01)
CPC (source: EP)
H01C 7/126 (2013.01); H01H 37/761 (2013.01); H01H 2037/762 (2013.01); H01T 1/12 (2013.01); H01T 1/14 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2811492 A1 20141210; EP 2811492 B1 20160525; ES 2580042 T3 20160818; IT MI20130915 A1 20141205; PL 2811492 T3 20161130; SI 2811492 T1 20161028
DOCDB simple family (application)
EP 14165431 A 20140422; ES 14165431 T 20140422; IT MI20130915 A 20130604; PL 14165431 T 20140422; SI 201430056 A 20140422