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DE2550915A1 - Aerial lightning protection circuit - comprises spark gap, fast fuse and surge diverter - Google Patents

Aerial lightning protection circuit - comprises spark gap, fast fuse and surge diverter

Info

Publication number
DE2550915A1
DE2550915A1 DE19752550915 DE2550915A DE2550915A1 DE 2550915 A1 DE2550915 A1 DE 2550915A1 DE 19752550915 DE19752550915 DE 19752550915 DE 2550915 A DE2550915 A DE 2550915A DE 2550915 A1 DE2550915 A1 DE 2550915A1
Authority
DE
Germany
Prior art keywords
aerial
spark gap
antenna
fuse
surge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19752550915
Other languages
German (de)
Other versions
DE2550915B2 (en
Inventor
Gerhard Dipl Ing Bodemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19752550915 priority Critical patent/DE2550915B2/en
Publication of DE2550915A1 publication Critical patent/DE2550915A1/en
Publication of DE2550915B2 publication Critical patent/DE2550915B2/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

To protect the equipment connected to the aerial (1), and anyone working thereon at the time, from the consequences of a lighting strike diverter elements and a fuse are connected to the aerial lead. Directly coupled to the antenna is a spark gap (2) one side of which is at earth potential. A fast acting fuse (3) is in series with the aerial lead, and on the side of the output terminal (5) a surge diverter (4) is provided, also connected to earth. Acting in combination, these elements serve to limit the currents and voltages resulting from a lighting strike to acceptable values, and to disconnect the aerial. A current of 100kA can be interrupted in 10 microseconds. The remaining voltage surge is of low energy content and can be suppressed by conventional diode circuits in the equipment input stage.

Description

"Schaltungsanordnung für Antennen zum Schutz gegen "Circuit arrangement for antennas to protect against

Schäden durch Blitzeinschlag" Die Erfindung betrifft eine Schaltungsanordnung für Antennen zum Schutz gegen Schäden durch Blitzeinschlag. Damage caused by lightning strike "The invention relates to a circuit arrangement for antennas to protect against damage from lightning strikes.

Es ist bereits bekannt, zum Schutz gegen Blitzschäden Antennen über eine Funkenstrecke, einen Überspannungsablelter bzw.It is already known to use antennas to protect against lightning damage a spark gap, a surge arrester or

eine Kombination aus beiden an Masse zu legen. Der Nachteil dieser bekannten Schutzschaltungen besteht darin, daß die an die Antenne angeschlossenen Geräte in diesem:Fall während der gesamten Dauer des durch einen Blitz verursachten Stromstoßes mit der Antenne verbunden sind, was in der Regel zu Defekten an den Geräten führt, Der Erfindung liegt die Aufgabe zugrunde, eine Schaltungsanordnung der eingangs genannten Art zu schaffen, mittels welcher an Antennen angeschlossene Geräte sowie an den Geräten arbeitende Personen wirkungsvoll gegen Schäden bei einem Blitzeinschlag in die oder in der Nähe der Antennen geschützt werden und mittels welcher außerdem feststellbar ist, ob ein bestimmter Antennenstrom überschritten worden ist, so daß gewisse Schaltelemente in der Antenne, wie z. B. Überbrückungsglieder, ausgewechselt werden müssen.to put a combination of both at ground. The disadvantage of this known protection circuits is that the connected to the antenna Devices in this case: during the entire duration of the caused by lightning Power surge connected to the antenna, which is usually about The object of the invention is to provide a circuit arrangement of the type mentioned above, by means of which antennas are connected Devices as well as people working on the devices are effective against damage to one Lightning strikes in or near the antennas are protected and by means of which can also be determined whether a certain antenna current is exceeded has been, so that certain switching elements in the antenna, such. B. bridging links, need to be replaced.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Antenne zum einen über eine Funkenstrecke an Masse gelegt und zum andern mit einem ersten Anschluß einer schnellen Sicherung verbunden ist und daß ein zweiter Anschluß der schnellen Sicherung einerseits an einen Geräteanschluß und andererseits über einen Überspannungsableiter an Masse angeschlossen ist.This object is achieved according to the invention in that the antenna on the one hand connected to ground via a spark gap and on the other hand with a first Connection of a fast fuse is connected and that a second connection of the fast backup on the one hand to a device connection and on the other hand via a Surge arrester is connected to ground.

Der Vorteil der erfindungsgemäßen Schaltung besteht darin, daß die an den Antennenausgang angeschlossenen Geräte bei Blitzeinwirkung auf die Antenne bereits nach einer sehr kurzen Zeit von der Antenne abgeschaltet werden. Untersuchungen haben gezeigt, daß selbst bei sehr hohen Blitzströmen bis zu 100 kA die Abschaltzeit bei weniger als 1O/U sec liegt. Der verbleibende kurze Spannungsstoß hat nur geringen Energieinhalt, so daß er geräteseitig mittels einer einfachen Diodenschaltung begrenzt werden kann.The advantage of the circuit according to the invention is that the Devices connected to the antenna output in the event of lightning strikes on the antenna after a very short time of the antenna switched off will. Studies have shown that even with very high lightning currents up to at 100 kA the switch-off time is less than 1O / U sec. The remaining short one Voltage surge has only a low energy content, so that it is on the device side by means of a simple diode circuit can be limited.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and is described in more detail below.

Die Figur zeigt eine Antenne 1 mit einem ausgangsseitigen Geräteanschluß 5 und einer zum Schutz gegen Schäden durch Blitzeinschlag zwischen Antenne und Geräteausgang eingefügten Schaltungsanordnung bestehend aus einer Funkenstrecke 2, einer schnellen Sicherung 3 und einer Überspannungsableitung 4. Übersteigt bei einem Blitzeinschlag in die Antenne oder in deren Nähe die Antennenspannung die Nennspannung der Überspannungsableitung 4, so fließt ein Kurzschlußstrom über die schnelle Sicherung 3 und die Überspannungsableitung 4 gegen Masse. Dabei löst die schnelle Sicherung 3 aus und trennt die über den Geräteanschluß 5 an die Antenne angeschlossenen Geräte von der Antenne. Bei sehr hohen Spannungen zündet außerdem die Funkenstrecke 2 und verhindert ein Uberschlagen des Blitzes von der Antenne 1 auf den Geräteausgang 5 nach Ansprechen der schnellen Sicherung 3.The figure shows an antenna 1 with a device connection on the output side 5 and one to protect against damage caused by lightning strikes between the antenna and the device outlet inserted circuit arrangement consisting of a spark gap 2, a fast Fuse 3 and a surge arrester 4. Exceeds in the event of a lightning strike in the antenna or in its vicinity the antenna voltage the nominal voltage of the surge arrester 4, a short-circuit current flows through the fast fuse 3 and the surge arrester 4 against ground. The fast fuse 3 triggers and disconnects via the device connection 5 devices connected to the antenna from the antenna. At very high voltages also ignites the spark gap 2 and prevents the flash from flashing from antenna 1 to device output 5 after the fast fuse has responded 3.

Da der Erfindung die Erkenntnis zugrunde liegt, daß Antennen bei Blitzeinwirkung möglichst schnell von den Antennenausgängen getrennt werden müssen, richtet sich das Schutzbegehren ganz allgemein auf Mittel zum Erreichen dieses Zieles und nicht nur auf die hier explizit angegebene Schaltmaßnahme. LeerseiteSince the invention is based on the knowledge that antennas when exposed to lightning must be disconnected from the antenna outputs as quickly as possible the request for protection in general on means of achieving this goal and not only to the switching measure explicitly specified here. Blank page

Claims (1)

Patentanspruch Schaltungsanordnung für Antennen zum Schutz gegen Schäden durch Blitzeinschlag, dadurch gekennzeichnet, daß die Antenne (1) zum einen über eine Funkenstrecke (2) an Masse gelegt und zum andern mit einem ersten Anschluß einer schnellen Sicherung (3) verbunden ist und daß ein zweiter Anschluß der schnellen Sicherung einerseits an einen Geräteanschluß (5) und andererseits über einen Überspannungsableiter (4) an Masse angeschlossen ist (Fig.).Circuit arrangement for antennas for protection against damage by lightning strike, characterized in that the antenna (1) on the one hand via a spark gap (2) placed on ground and on the other hand with a first connection a fast fuse (3) is connected and that a second connection of the fast Fuse on the one hand to a device connection (5) and on the other hand via a surge arrester (4) is connected to ground (Fig.).
DE19752550915 1975-11-13 1975-11-13 CIRCUIT ARRANGEMENT FOR ANTENNAS FOR PROTECTION AGAINST DAMAGE CAUSED BY LIGHTNING STRIKES Ceased DE2550915B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752550915 DE2550915B2 (en) 1975-11-13 1975-11-13 CIRCUIT ARRANGEMENT FOR ANTENNAS FOR PROTECTION AGAINST DAMAGE CAUSED BY LIGHTNING STRIKES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752550915 DE2550915B2 (en) 1975-11-13 1975-11-13 CIRCUIT ARRANGEMENT FOR ANTENNAS FOR PROTECTION AGAINST DAMAGE CAUSED BY LIGHTNING STRIKES

Publications (2)

Publication Number Publication Date
DE2550915A1 true DE2550915A1 (en) 1977-05-18
DE2550915B2 DE2550915B2 (en) 1978-02-02

Family

ID=5961618

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752550915 Ceased DE2550915B2 (en) 1975-11-13 1975-11-13 CIRCUIT ARRANGEMENT FOR ANTENNAS FOR PROTECTION AGAINST DAMAGE CAUSED BY LIGHTNING STRIKES

Country Status (1)

Country Link
DE (1) DE2550915B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152127A3 (en) * 1984-01-26 1986-12-17 Philips Patentverwaltung GmbH Overvoltage peaks supressor device
EP1548873A1 (en) * 2003-11-28 2005-06-29 Leantenne S.r.l. Antenna for a train with protective means against high voltages

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439967B4 (en) * 1994-11-09 2004-02-19 Continental Teves Ag & Co. Ohg Circuit arrangement for protection against high-energy overvoltages

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152127A3 (en) * 1984-01-26 1986-12-17 Philips Patentverwaltung GmbH Overvoltage peaks supressor device
EP1548873A1 (en) * 2003-11-28 2005-06-29 Leantenne S.r.l. Antenna for a train with protective means against high voltages

Also Published As

Publication number Publication date
DE2550915B2 (en) 1978-02-02

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Legal Events

Date Code Title Description
8220 Willingness to grant licences (paragraph 23)
8235 Patent refused