Global Patent Index - EP 3041004 A1

EP 3041004 A1 20160706 - SURGE ARRESTER FOR THE PROTECTION OF ELECTRIC PLANTS FROM TRANSIENT SURGES

Title (en)

SURGE ARRESTER FOR THE PROTECTION OF ELECTRIC PLANTS FROM TRANSIENT SURGES

Title (de)

ÜBERSPANNUNGSSCHUTZ ELEKTRISCHER ANLAGEN VOR TRANSIENTEN ÜBERSPANNUNGEN

Title (fr)

COUPE-CIRCUIT DE SURTENSION POUR LA PROTECTION DES INSTALLATIONS ELECTRIQUES CONTRE LES SURTENSIONS TRANSITOIRES

Publication

EP 3041004 A1 20160706 (EN)

Application

EP 15197440 A 20140320

Priority

  • IT MI20130538 A 20130408
  • EP 14160969 A 20140320

Abstract (en)

A surge arrester is disclosed comprising a first and a second electric terminal (1, 2) for connecting to the active leads of an electric plant, between which a protection element (3) is inserted provided with a pair of electrodes (4) electrically wired to said electric terminals, between said first electric terminal (1) and an electrode (4) of the protection element (3) a disconnector being provided comprising a conductive, resilient, flexible lamina (5) having a base end (5a) electrically wired to said first electric terminal (1) and a distal end (5d) maintained electrically connected to said electrode (4), in a state of elastic preload, by a welding with low-melt material. Lamina (5) is mounted elastically biased according to a direction so as to push said distal end (5d) away from said electrode (4) and it is made with a thickness below 0.5 mm and of a conductive material with a conductivity much lower than that of copper (IACS<60) such as to melt/sublimate following heating by Joule effect upon the passing of a short-circuit current. Between said base end (5a) of the lamina (5) and said electrode (4) of the protection element (3) a sliding guide (6) for an intercepting cursor (7) is provided, biased in a longitudinal direction of said sliding guide (6) by preloaded elastic means (8), and at least an inclined portion (5c) of said lamina (5) runs through said sliding guide (6) at a certain angle to the longitudinal sliding axis thereof, said inclined portion (5c) of the lamina acting as abutment and holding element for a head end (7b) of said cursor (7).

IPC 8 full level

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 1/14 (2013.01)

Citation (applicant)

Citation (search report)

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 2790192 A1 20141015; EP 2790192 B1 20160427; EP 2790192 B9 20160921; EP 3041004 A1 20160706; EP 3041004 B1 20170830; ES 2582703 T3 20160914; ES 2649749 T3 20180115; IT MI20130538 A1 20141009; PL 2790192 T3 20170731; PL 3041004 T3 20180131; SI 2790192 T1 20160930; SI 3041004 T1 20171229

DOCDB simple family (application)

EP 14160969 A 20140320; EP 15197440 A 20140320; ES 14160969 T 20140320; ES 15197440 T 20140320; IT MI20130538 A 20130408; PL 14160969 T 20140320; PL 15197440 T 20140320; SI 201430039 A 20140320; SI 201430482 T 20140320