US 11,705,724 B2
Lightning protection spark gap assembly and method for operating a lightning protection spark gap assembly
Arnd Ehrhardt, Neumarkt (DE); and Klaus Bühler, Neumarkt (DE)
Assigned to DEHN SE, Neumarkt i.d. OPf. (DE)
Appl. No. 17/606,930
Filed by DEHN SE, Neumarkt (DE)
PCT Filed May 7, 2020, PCT No. PCT/EP2020/062652
§ 371(c)(1), (2) Date Oct. 27, 2021,
PCT Pub. No. WO2020/225340, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10 2019 206 730.1 (DE), filed on May 9, 2019; and application No. 10 2019 210 236.0 (DE), filed on Jul. 10, 2019.
Prior Publication US 2022/0208498 A1, Jun. 30, 2022
Int. Cl. H02H 9/04 (2006.01); H01H 85/02 (2006.01); H01H 85/30 (2006.01); H01H 85/38 (2006.01); H01T 1/14 (2006.01); H01H 85/00 (2006.01); H01T 1/02 (2006.01)
CPC H02H 9/041 (2013.01) [H01H 85/0039 (2013.01); H01H 85/0241 (2013.01); H01H 85/306 (2013.01); H01H 85/38 (2013.01); H01T 1/02 (2013.01); H01T 1/14 (2013.01); H01H 2085/381 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A lightning protection spark gap assembly having:
a lightning protection spark gap (1; 1′; 1″) having a first main connection (1a) and a second main connection (1b);
wherein a first voltage line (S1) of a supply network is connectable to the first main connection (1a) and a second voltage line of the supply network is connectable to the second main connection (1b);
a triggerable fusible link device (8) which is connectable between the first or second voltage line (S1, S2) and the corresponding main connection (1, 1b) of the lightning protection spark gap (1; 1′);
wherein at least one current path (TS; HS) leading via the lightning protection spark gap (1; 1′; 1″) is formable during operation between the first voltage line (S1) and the second voltage line (S2);
an indicator device (I; I′; IE) for capturing a current profile in the current path (TS; HS) or a corresponding portion of the current profile in the current path (TS; HS) and for triggering the fusible link device (8) with an electrical or mechanical delay when the captured current profile in the current path (TS; HS) or the corresponding portion of the current profile in the current path (TS; HS) satisfies a predefined criterion;
wherein the triggering of the fusible link device (8) is delayed by a predefined period which is selected in such a manner that a pulse current has substantially decayed before the fusible link device (8) is triggered;
wherein the fusible link device (8) has a bridge igniter (7) which is usable to trigger the fusible link.