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    LIGHTNING-PROTECTION SPARK GAP
    1.
    发明公开
    LIGHTNING-PROTECTION SPARK GAP 审中-公开

    公开(公告)号：US20240162689A1

    公开(公告)日：2024-05-16

    申请号：US17918298

    申请日：2021-11-08

    申请人： DEHN SE

    发明人： Bernhard Krauss ,  Stephan Hierl ,  Uwe Strangfeld

    IPC分类号： H01T4/10 ,  H01T4/04

    CPC分类号： H01T4/10 ,  H01T4/04

    摘要： The present invention relates to a lightning-protection spark gap, comprising: —a housing (G); —a first electrode (3a), which has a first outer face (Aa) and a first inner face (Ia); and —a second electrode (3b), which has a second outer face (Ab) and a second inner face (Ib); wherein the first electrode (3a) and the second electrode (3b) diverge from each other; wherein a striking region (Z) and an adjoining propagation region (L) for a spark are formed between the first inner face (Ia) of the first diverging electrode (3a) and the second inner face (Ib) of the second diverging electrode (3b); wherein the housing (G) forms an arc chamber (LK) between the first electrode (3a) and the second electrode (3b), which arc chamber is delimited by a quenching chamber (4); and wherein, in the housing (G), at least one first gas circulation channel (K1) is formed, by means of which a gas flow escaping from the quenching chamber (40) in the event of a lightning strike can be returned to the arc chamber (K) via at least one first cutout (V1; V1′; V1″; V1′″) in the propagation region (L) of the first electrode (3a). The first cutout (V1; V1′; V1″; V1′″) is asymmetrical with respect to a longitudinal extent of the first cutout (V1; V1′; V1″; V1′″) in the propagation direction of the arc; the first cutout (V1; V1′; V1″; V1′″) falls in the propagation direction of the arc from a first cross-section (Q1) of the first electrode (3a) to a minimum cross-section (QM) of the first electrode (3a) over a first distance (l1; l1′; l1″; l1′″) and rises from the minimum cross-section (QM) of the first electrode (3a) to a second cross-section (Q2) of the first electrode (3a) over a second distance (l2; l2′; l2″; l2′″). The first distance (l1; l1′; l1″; l1′″) is shorter than the second distance (l2; l2′; l2″; l2′″).

    Disconnecting device for a surge arrester
    3.
    发明授权
    Disconnecting device for a surge arrester 有权

    公开(公告)号：US11476071B2

    公开(公告)日：2022-10-18

    申请号：US17251895

    申请日：2019-05-20

    申请人： DEHN SE

    发明人： Edmund Zäuner

    IPC分类号： H01H71/08 ,  H01H71/02 ,  H01H71/10 ,  H01H37/76

    摘要： The invention relates to a disconnecting device for a surge arrester which is accommodated by a support body, and wherein plug contacts which are connected to at least one arrester element of the surge arrester extend from the support body. The invention further comprises a switching tongue which is connected at a first end to the arrester element via a thermal separating point and with a second end to one of the plug contacts. Furthermore, a spring-preloaded insulating disconnecting bracket which is pivotably mounted on the support body is provided, the spring preload acting on the thermal separating point via the switching tongue. According to the invention, the switching tongue is configured as a straight-surface, elongated, metallic, resiliently elastic disconnecting strip having a rectangular cross-section.

    ASYMMETRIC OVERVOLTAGE PROTECTION APPARATUS, DC CIRCUIT ARRANGEMENT AND DC NETWORK
    4.
    发明申请
    ASYMMETRIC OVERVOLTAGE PROTECTION APPARATUS, DC CIRCUIT ARRANGEMENT AND DC NETWORK 有权

    公开(公告)号：US20220224110A1

    公开(公告)日：2022-07-14

    申请号：US17607195

    申请日：2020-05-04

    申请人： DEHN SE + CO KG

    发明人： Michael Stehle ,  Frank Schork

    IPC分类号： H02H9/06 ,  H02H7/122

    摘要： An asymmetric surge protection device for a DC circuit (16) has a negative side (32) which can be connected to a current output (28) of the DC circuit (16), a positive side (30) which can be connected to a current input (26) of the DC circuit (16), and an asymmetric neutral section (34). The asymmetric neutral section (34) has a positive protection level (Vp) for a positive voltage (V) between the positive side (30) and the negative side (32), and a negative protection level (Vn) for a negative voltage (V) between the positive side (30) and the negative side (32), the positive protection level (Vp) being different from the negative protection level (Vn).
    Furthermore, a DC circuit arrangement (14) and a DC network (10) are shown.

    LIGHTNING PROTECTION SPARK GAP ASSEMBLY AND METHOD FOR OPERATING A LIGHTNING PROTECTION SPARK GAP ASSEMBLY
    5.
    发明申请
    LIGHTNING PROTECTION SPARK GAP ASSEMBLY AND METHOD FOR OPERATING A LIGHTNING PROTECTION SPARK GAP ASSEMBLY 有权

    公开(公告)号：US20220208498A1

    公开(公告)日：2022-06-30

    申请号：US17606930

    申请日：2020-05-07

    申请人： DEHN SE + CO KG

    发明人： Arnd Ehrhardt ,  Klaus Bühler

    IPC分类号： H01H85/00 ,  H01T1/14 ,  H01T1/02

    摘要： The invention relates to a lightning protection spark gap assembly. The lightning protection spark gap assembly comprises: a lighting protection spark gap (1) having a first main connection (1a) and a second main connection (1b), wherein a first voltage line (S1) of a supply network can be connected to the first main connection (1a) and a second voltage line of the supply network can be connected to the second main connection (1b); a safety fuse device (8) which can be triggered and which can be connected between the first or second voltage line (S1, S2) and the corresponding main connection (1, 1b) of the lightning protection spark gap (1), wherein at least one current path (TS) leading via the lighting protection spark gap (1) can be formed between the first voltage line (S1) and the second voltage line (S2) during operation; an indicator device (I) for detecting a current flow in the current path (TS) or a corresponding portion of the current flow in the current path (TS) and for mechanically or electrically delayed triggering of the safety fuse device (8) if the detected current flow in the current path (TS) or the corresponding portion of the current flow in the current path (TS) fulfills a predefined criterion.

    TRIGGERED FUSE FOR LOW-VOLTAGE APPLICATIONS
    10.
    发明申请
    TRIGGERED FUSE FOR LOW-VOLTAGE APPLICATIONS 有权

    公开(公告)号：US20220013320A1

    公开(公告)日：2022-01-13

    申请号：US17485963

    申请日：2021-09-27

    申请人： DEHN SE + CO KG

    发明人： Arnd Ehrhardt ,  Peter Zahlmann ,  Sven Wolfram

    IPC分类号： H01H89/00 ,  H01H39/00 ,  H01H85/00 ,  H01H85/12 ,  H01H85/18

    摘要： The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. By way of example, an arc quenching medium-free region is formed in the housing such that the at least one fusible conductor is exposed, and a mechanical disconnection element can be introduced into the arc quenching medium-free region via an access point in the housing in order to mechanically destroy the at least one fusible conductor depending on the trigger device, and independently of its melting integral.