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1. 发明授权

US11454653B2 Device for detecting electrical currents on or in the vicinity of electrical conductors 有权
公开(公告)号：US11454653B2
公开(公告)日：2022-09-27
申请号：US17040840
申请日：2018-05-23
申请人： DEHN SE + CO KG
发明人： Peter Zahlmann , Josef Birkl , Thomas Böhm , Klaus Bühler , Johannes Maget , Arnd Ehrhardt , Eduard Shulzhenko
IPC分类号： G01R19/165 , G01R29/08
摘要： The invention relates to a device for detecting electrical currents on or in the vicinity of electrical conductors with at least one Reed switch as a magnetically responsive switch, which is arranged in the vicinity of the electrical conductor such that, when there is a significant current flow through the conductor, the magnetic field created triggers the switch and initiates an evaluation electronics connected to the switch. For the detection of surge current variables and the differentiation between long-term pulsed currents and short-term pulsed currents, a plurality of Reed switches are arranged at a predetermined distance from the electrical conductor, wherein the evaluation electronics determines the response and the switching times of the respective Reed switches, determines die surge current variable from the allocation of the determined values to the respective Reed switch and the pulse form from the switching time, wherein, for the purpose of adjusting the response behavior, at least one of the Reed switches comprises a shielding for influencing the magnetic field acting on the respective Reed switch.

2. 发明申请

US20220208498A1 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.

3. 发明授权

US11162984B2 Device for detecting electrical currents on or near electrical conductors 有权
公开(公告)号：US11162984B2
公开(公告)日：2021-11-02
申请号：US16614430
申请日：2018-05-22
申请人： DEHN SE + CO KG
发明人： Peter Zahlmann , Josef Birkl , Thomas Böhm , Klaus Bühler , Johannes Maget , Arnd Ehrhardt , Eduard Shulzhenko
IPC分类号： G01R19/165 , G01R15/14 , G01R31/52
摘要： The invention relates to a method for detecting electrical currents on or near electrical conductors with at least one reed switch as a magnetically responsive switch, which is arranged near the electrical conductor such that when there is a significant current flow through the conductor, the magnetic field created triggers the switch and initiates evaluation electronics connected to the switch. For the detection of surge current variables and differentiation between long-term pulsed currents and short-term pulsed currents, a plurality of reed switches is arranged at pre-determined, different, increasing distances from the electrical switch, the evaluation electronics determining the response and the switching times of the respective reed switches. The surge current variables are determined from the association of the determined values with the respective reed switch and the pulse shape from the switching time.

4. 发明申请

US20210066009A1 SHORT-CIRCUITING DEVICE FOR USE IN LOW-VOLTAGE AND MEDIUM-VOLTAGE SYSTEMS FOR THE PROTECTION OF PROPERTY AND PERSONS 有权
公开(公告)号：US20210066009A1
公开(公告)日：2021-03-04
申请号：US16957825
申请日：2018-12-03
申请人： DEHN SE + CO KG
发明人： Arnd Ehrhardt , Klaus Bühler
IPC分类号： H01H37/76 , H01H39/00
摘要： The invention relates to a short-circuiting device for use in low-voltage and medium-voltage systems for the protection of property and persons, comprising: a switching element, which can be operated by the tripping signal of a fault detection device; two mutually opposite contact electrodes having power supply means, which contact electrodes can be brought into contact with an electrical circuit having connection points at different potential; furthermore, in at least one of the contact electrodes, a movable contact part, which is under mechanical preload and executes a movement to the further contact electrode with the assistance of spring force in the event of a short circuit; and a sacrificial element as a spacer between the contact electrodes, with an electrical connection between the sacrificial element and the switching element on the one hand and one of the contact electrodes on the other hand, in order to deliberately cause current-flow-induced thermal deformation or destruction of the sacrificial element. According to the invention, the movable contact part is in the form of a hollow cylinder which is closed on one side, and a spring for generating preload is inserted in the hollow cylinder. The hollow cylinder is movably guided in a complementary cutout in the first contact electrode, a sliding contact thus being formed. In the region of the base of the closed hollow cylinder, the cylinder wall of said hollow cylinder transitions into a cone at the outer circumference. Furthermore, a first pin-like extension, opposite to which a second pin-like extension insulated from the contact electrodes is situated, extends within the hollow cylinder, proceeding from the base. The sacrificial element, in the form of a bolt or screw, is arranged between the first and the second pin-like extension. A cutout, which has an internal cone and is matched to the external cone of the movable contact, is provided in the second contact electrode. The external cone and the internal cone form a bounce-free short-circuit contact region having frictional locking and interlocking connection on account of plastic deformation which occurs. Furthermore, according to the invention the switching element is designed as an auxiliary short-circuiter on the basis of an electric match.

5. 发明申请

US20210025927A1 DEVICE FOR DETECTING ELECTRICAL CURRENTS ON OR IN THE VICINITY OF ELECTRICAL CONDUCTORS 有权
公开(公告)号：US20210025927A1
公开(公告)日：2021-01-28
申请号：US17040840
申请日：2018-05-23
申请人： DEHN SE + CO KG
发明人： Peter Zahlmann , Josef Birkl , Thomas Böhm , Klaus Bühler , Johannes Maget , Arnd Ehrhardt , Eduard Shulzhenko
IPC分类号： G01R19/165 , G01R29/08
摘要： The invention relates to a device for detecting electrical currents on or in the vicinity of electrical conductors with at least one Reed switch as a magnetically responsive switch, which is arranged in the vicinity of the electrical conductor such that, when there is a significant current flow through the conductor, the magnetic field created triggers the switch and initiates an evaluation electronics connected to the switch. For the detection of surge current variables and the differentiation between long-term pulsed currents and short-term pulsed currents, a plurality of Reed switches are arranged at a predetermined distance from the electrical conductor, wherein the evaluation electronics determines the response and the switching times of the respective Reed switches, determines die surge current variable from the allocation of the determined values to the respective Reed switch and the pulse form from the switching time, wherein, for the purpose of adjusting the response behavior, at least one of the Reed switches comprises a shielding for influencing the magnetic field acting on the respective Reed switch.

6. 发明申请

US20220209530A1 LIGHTNING PROTECTION SPARK GAP ASSEMBLY AND METHOD FOR OPERATING A LIGHTNING PROTECTION SPARK GAP ASSEMBLY 有权
公开(公告)号：US20220209530A1
公开(公告)日：2022-06-30
申请号：US17606866
申请日：2020-05-07
申请人： DEHN SE + CO KG
发明人： Arnd Ehrhardt , Klaus Bühler
IPC分类号： H02H9/04 , H01T1/14 , H01H85/02 , H01H85/38 , H01H85/30
摘要： The invention relates to a lightning protection spark gap assembly. The lightning protection spark gap assembly comprises: a lightning protection spark gap (1); a safety fuse device (8) which can be triggered by a bridge initiator (7) and which is connected between a first or second voltage line (S1, S2) and a corresponding main connection (1, 1b) of the lighting protection spark gap (1); and an indicator device (4′) for detecting a secondary current flow connecting to a pulse current flow or a corresponding portion of the secondary current flow, and for triggering the safety fuse device (8) by activating the bridge initiator (7) when the detected secondary current flow or the corresponding portion of the secondary current flow fulfills a first predefined criterion, wherein the lightning protection spark gap (1) has a first and a second divergent electrode (21a, 21b) and an arcing chamber (25), and wherein the indicator device (4′) is electrically connected to the first or second divergent electrode (21a, 21b) and/or the arcing chamber (25) in such a way that it detects the secondary current flow or the corresponding portion of the secondary current flow in the area (L) in which the secondary current arc flows.

7. 发明授权

US11145477B2 Short-circuiting device for use in low-voltage and medium-voltage systems for the protection of property and persons 有权
公开(公告)号：US11145477B2
公开(公告)日：2021-10-12
申请号：US16957825
申请日：2018-12-03
申请人： DEHN SE + CO KG
发明人： Arnd Ehrhardt , Klaus Bühler
IPC分类号： H01H39/00 , H01H37/76
摘要： The invention relates to a short-circuiting device for use in low-voltage and medium-voltage systems for the protection of property and persons, comprising: a switching element, which can be operated by the tripping signal of a fault detection device; two mutually opposite contact electrodes having power supply means, which contact electrodes can be brought into contact with an electrical circuit having connection points at different potential; furthermore, in at least one of the contact electrodes, a movable contact part, which is under mechanical preload and executes a movement to the further contact electrode with the assistance of spring force in the event of a short circuit; and a sacrificial element as a spacer between the contact electrodes, with an electrical connection between the sacrificial element and the switching element on the one hand and one of the contact electrodes on the other hand, in order to deliberately cause current-flow-induced thermal deformation or destruction of the sacrificial element. According to the invention, the movable contact part is in the form of a hollow cylinder which is closed on one side, and a spring for generating preload is inserted in the hollow cylinder. The hollow cylinder is movably guided in a complementary cutout in the first contact electrode, a sliding contact thus being formed. In the region of the base of the closed hollow cylinder, the cylinder wall of said hollow cylinder transitions into a cone at the outer circumference. Furthermore, a first pin-like extension, opposite to which a second pin-like extension insulated from the contact electrodes is situated, extends within the hollow cylinder, proceeding from the base. The sacrificial element, in the form of a bolt or screw, is arranged between the first and the second pin-like extension. A cutout, which has an internal cone and is matched to the external cone of the movable contact, is provided in the second contact electrode. The external cone and the internal cone form a bounce-free short-circuit contact region having frictional locking and interlocking connection on account of plastic deformation which occurs. Furthermore, according to the invention the switching element is designed as an auxiliary short-circuiter on the basis of an electric match.

8. 发明申请

US20200182915A1 DEVICE FOR DETECTING ELECTRICAL CURRENTS ON OR NEAR ELECTRICAL CONDUCTORS 审中-公开
公开(公告)号：US20200182915A1
公开(公告)日：2020-06-11
申请号：US16614430
申请日：2018-05-22
申请人： DEHN SE + CO KG
发明人： Peter Zahlmann , Josef Birkl , Thomas Böhm , Klaus Bühler , Johannes Maget , Arnd Ehrhardt , Eduard Shulzhenko
IPC分类号： G01R19/165 , G01R15/14
摘要： The invention relates to a method for detecting electrical currents on or near electrical conductors with at least one reed switch as a magnetically responsive switch, which is arranged near the electrical conductor such that when there is a significant current flow through the conductor, the magnetic field created triggers the switch and initiates evaluation electronics connected to the switch. For the detection of surge current variables and differentiation between long-term pulsed currents and short-term pulsed currents, a plurality of reed switches is arranged at pre-determined, different, increasing distances from the electrical switch, the evaluation electronics determining the response and the switching times of the respective reed switches. The surge current variables are determined from the association of the determined values with the respective reed switch and the pulse shape from the switching time.

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