US 12,470,059 B2
Overvoltage protection device and use of an overvoltage protection device
Peter Zahlmann, Neumarkt (DE); Ralph Brocke, Ilmenau/Oberpörlitz (DE); Helmut Hirschmann, Berg (DE); and Edmund Zäuner, Berching/Pollanten (DE)
Assigned to DEHN SE, Neumarkt i.d.OPf. (DE)
Appl. No. 18/273,861
Filed by DEHN SE, Neumarkt i.d.OPf. (DE)
PCT Filed Jan. 25, 2022, PCT No. PCT/EP2022/051577
§ 371(c)(1), (2) Date Jul. 24, 2023,
PCT Pub. No. WO2022/157378, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 102021101506.5 (DE), filed on Jan. 25, 2021.
Prior Publication US 2024/0429706 A1, Dec. 26, 2024
Int. Cl. H02H 9/06 (2006.01); H02H 9/00 (2006.01)
CPC H02H 9/06 (2013.01) [H02H 9/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A surge protection apparatus for protecting an electrical installation against transient overvoltages, having a voltage-limiting protection component (18) and additionally a voltage-switching protection component (20), the voltage-limiting protection component (18) and the voltage-switching protection component (20) being connected in series,
the voltage-switching protection component (20) being configured such that the voltage-switching protection component (20) switches to a quasi-closed switching state for each surge current or arresting process,
wherein the voltage-switching protection component (20) is configured such that a voltage applied to the voltage-switching protection component (20) drops across the voltage-switching protection component (20) in the initial state thereof such that the series-connected voltage-limiting protection component (18) remains free from leakage current,
wherein the voltage-switching protection component (20) is configured to at least limit occurring mains follow currents, wherein
the voltage-limiting protection component (18) is dimensioned such that the voltage-limiting protection component (18) satisfies the condition UB=Un/Kx, where UB is the rated voltage of the voltage-limiting protection component (18), Un is a nominal voltage applied to the voltage-limiting protection component (18), and Kx is a setting parameter the value of which is at least 2, and
wherein the voltage-limiting protection component (18) is configured to be underdimensioned so that the surge protection apparatus (10) protects the electrical installation from transient overvoltages.