Global Patent Index - EP 2920855 A1

EP 2920855 A1 20150923 - IGNITION CIRCUIT

Title (en)

IGNITION CIRCUIT

Title (de)

ZÜNDKREIS

Title (fr)

CIRCUIT D'AMORÇAGE

Publication

EP 2920855 A1 20150923 (DE)

Application

EP 13811373 A 20131108

Priority

  • DE 102012022399 A 20121116
  • EP 2013003364 W 20131108

Abstract (en)

[origin: WO2014075782A1] The subject matter of the invention is an ignition circuit (Z) for a series circuit comprising at least two spark gaps for limiting overvoltages with medium and high power, in particular overvoltages corresponding to the pulse shapes 8/20 μs and 10/350 μs with amplitudes of approximately 10 kA to approximately 200 kA (Class I arrester), (FS1, FS2). The spark gaps (FS1, FS2) are each equipped with at least one auxiliary electrode (H1, H2). The ignition circuit (Z) has a first varistor (VAR1) and a second varistor (VAR2), wherein the ignition circuit (Z) is suitable for limiting overvoltages with a mean power, in particular overvoltages corresponding to the pulse shape 8/20 μs with amplitudes of approximately 10 to approximately 100 kA (Class II arrester). The ignition circuit (Z) is designed for connection to the auxiliary electrodes (H1, H2), wherein the ignition circuit (Z) has two ignition subcircuits (TZ1, TZ2). The first ignition subcircuit (TZ1) has the first varistor (VAR1) and is designed for igniting the first spark gap (FS1). The second ignition subcircuit (TZ2) has the second varistor (VAR2) and is designed for igniting the second spark gap (FS2). Further subjects of the invention are an overvoltage protection device comprising such an ignition circuit (Z) and the use of a multiple-contact varistor (M-VAR) for triggering a spark gap (FS1).

IPC 8 full level

H01T 1/16 (2006.01); H01C 7/10 (2006.01); H01T 2/02 (2006.01); H01T 4/16 (2006.01); H02H 9/06 (2006.01)

CPC (source: EP US)

H01C 7/10 (2013.01 - EP US); H01C 7/12 (2013.01 - EP US); H01T 1/16 (2013.01 - EP US); H01T 2/02 (2013.01 - EP US); H01T 4/16 (2013.01 - EP US); H02H 9/06 (2013.01 - US)

Citation (search report)

See references of WO 2014075782A1

Citation (examination)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

DE 102012022399 A1 20140522; CN 104769792 A 20150708; CN 104769792 B 20170606; EP 2920855 A1 20150923; US 2015288176 A1 20151008; US 9906016 B2 20180227; WO 2014075782 A1 20140522

DOCDB simple family (application)

DE 102012022399 A 20121116; CN 201380058953 A 20131108; EP 13811373 A 20131108; EP 2013003364 W 20131108; US 201314440555 A 20131108