EP2989700B1 - Circuit arrangement for surge protection in dc supply circuits - Google Patents
Circuit arrangement for surge protection in dc supply circuits Download PDFInfo
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- EP2989700B1 EP2989700B1 EP14713824.2A EP14713824A EP2989700B1 EP 2989700 B1 EP2989700 B1 EP 2989700B1 EP 14713824 A EP14713824 A EP 14713824A EP 2989700 B1 EP2989700 B1 EP 2989700B1
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- Prior art keywords
- gas discharge
- arresters
- voltage
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- spark gaps
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- 230000003213 activating effect Effects 0.000 claims 1
- 238000010295 mobile communication Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
- H01T4/20—Arrangements for improving potential distribution
Definitions
- the invention relates to a circuit arrangement for overvoltage protection in DC supply circuits of electronic components or devices, in particular devices for telecommunications, such as transmitting and receiving antennas and / or mobile systems consisting of a coarse protection series circuit of spark gaps or gas discharge between the input terminals and parallel to the spark gaps or gas discharge dischargers switched capacitors, at least one fine protection element between the output terminals and a decoupling impedance between coarse protection series circuit and fine protection element, according to the preamble of claim 1.
- the arc-burning voltage is brought by series connection of the partial spark gaps to n times the arc voltage of a partial spark gap.
- the partial spark gaps with the exception of the first partial spark gap responding in the lightning current event case are connected by impedances with the goal that a successive switching through takes place.
- the second and all other spark gaps after DE 297 24 817 U1 are directly connected to a common reference potential, in particular to the free electrode of the last spark gap as a reference electrode.
- overvoltage protection devices called "Blitzduktor" DEHN + S ⁇ HNE GmbH + Co. KG, Neu here, Germany.
- Such overvoltage arresters BVD KKS ALD 75 or BVT ALD 36 have series-connected gas discharge arresters with capacitors connected in parallel for the purpose of a successive switching through of the individual gas discharge arresters.
- the aim of the known arrester is to reduce the response voltage between the wires of a double wire.
- addition of the arc voltage is achieved by the series connection of the spark gaps or gas discharge, so that an increase in the allowable operating voltage is given. If the sum of the arc burn voltages of the individual components is above the operating voltage, erase, i. switching off the arresters independently of the current flowing in the event of the arresters being activated.
- JP 2002 010484 A discloses an overvoltage protection circuit consisting of a series arrangement of arresters, a fine protection element, a decoupling impedance and capacitors.
- the capacitors (capacitors) connected in parallel with the gas discharge arresters provide voltage division control, with the result that the gas discharge conductors are switched through sequentially. As a result, an overall response voltage of the circuit arrangement is achieved, which corresponds to the response voltage of a single gas discharge arrester.
- the design of the downstream, located on the output terminal fine protection circuit is placed on the arc voltage of the overall arrangement.
- a very low decoupling impedance for coordinating the overall arrangement of coarse protection to fine protection can be used, since it is only necessary to ensure that in the current increase before reaching the load limit of inserted diodes as a fine protection element, a sufficient voltage drop is created to switch on the gas discharge arresters.
- the required current carrying capacity of the fine protection is reduced by the intended function of the sequential switching of the coarse protection elements, i. the gas discharge tube or the spark gaps.
- the decoupling impedance can be designed for high operating currents in view of the low impedance values.
- a circuit arrangement for overvoltage protection in DC power supply circuits of electronic components or devices, in particular telecommunications equipment, such as transmitting and receiving antennas and / or mobile devices consisting of a coarse protection series connection of spark gaps or gas discharge between the input terminals and capacitors connected in parallel with the spark gaps or gas discharge conductors.
- at least one fine protection element is arranged between the output terminals and there is a decoupling impedance between the coarse protection series circuit and the fine protection element.
- the capacitance values of the capacitors are many times greater than the capacitance values of the gas discharge arresters or spark gaps.
- the inductance of the decoupling impedance is designed so that a sufficient voltage drop results in the current increase case, in order to switch the spark gaps or gas discharge arresters before the load limit of the fine protection element is reached.
- a capacitor is connected between each connection point of the spark gaps or gas discharge conductors and the earth potential, the ratio of the capacitance values of the gas discharge conductor and the spark gap to the capacitor being substantially 1: 100.
- the gas discharge arresters have a substantially equal response voltage, so that in the event of an overvoltage, a sequential switching through of the gas discharge arresters can take place.
- the fine protection element consists in a preferred embodiment of a series circuit of diodes.
- suppressor diodes or TVS diodes are used here.
- the stand-off voltage of these diodes of the series connection is greater than the sum of the arc voltage of the gas discharge tube.
- the Fig. 1 first lets you recognize the input terminals -V DC and + V DC. Between these input terminals is a series connection of eg five gas discharge arresters A1 to A5. The series connection of these five gas discharge arresters ensures that the arc burning voltage is approximately 60 V. It is thereby achieved extinguishing the gas discharge tube independent of the operating current at operating voltages up to 60 V.
- the capacitors C1 to C4 are connected to ground potential and to the + V DC terminal, respectively.
- the capacitance values of these capacitors are, for example, 100 times the capacitance of the gas discharge arresters. This ensures that initially the pending input voltage is applied completely to the gas discharge tube A5.
- the gas discharge arrester A5 is thereforeteurgeschaitet when exceeding a specified threshold voltage.
- gas discharge arresters A1 to A5 are used with approximately the same response voltage, a sequential switching through of the gas discharge arresters A5 to A1 occurs.
- the fine protection level is realized by an opposite pole series connection of suppressor or TVS diodes V1 to V4, wherein for the dimensioning of the fine protection, consisting of the diodes V1 to V4, the selected state off-voltage of the diodes higher than the sum of the arc voltage of the arrester A1 to A5 is. As a result, the diodes V1 to V4 are relieved after response of the arrester A5 to A1.
- the inductance of the coil L1 is to be chosen so that in the current increase before reaching the load limit of the diodes V1 to V4 sufficient voltage drop occurs at L1 to turn on the gas discharge arresters A1 to A4.
- the exemplary circuit after Fig. 1 was dimensioned for a likewise exemplary operating voltage of 60 V DC.
- the gas discharge arresters A1 to A5 have a maximum response voltage of 500 V (1 kV / ⁇ s).
- the capacitance of the capacitors C1 to C4 is about 10 nF.
- the capacity of the gas discharge tube is approx. 1.5 pF.
- the TVS diodes V1 to V4 have a stand-off voltage of 30V.
- the maximum current carrying capacity is 250 A (10/350 ⁇ s).
- the maximum clamping voltage is 100 V.
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- Emergency Protection Circuit Devices (AREA)
Description
Die Erfindung betrifft eine Schaltungsanordnung zum Überspannungsschutz in Gleichstrom-Versorgungskreisen von elektronischen Komponenten oder Geräten, insbesondere Geräten zur Telekommunikation, wie Sende- und Empfangsantennen und/oder Mobilfunkanlagen, bestehend aus einer Grobschutz-Reihenschaltung von Funkenstrecken oder Gasentladungsableitern zwischen den Eingangsklemmen sowie parallel zu den Funkenstrecken oder Gasentladungsableitern geschalteten Kondensatoren, mindestens einem Feinschutzelement zwischen den Ausgangsklemmen und einer Entkopplungsimpedanz zwischen Grobschutz-Reihenschaltung und Feinschutzelement, gemäß Oberbegriff des Anspruchs 1.The invention relates to a circuit arrangement for overvoltage protection in DC supply circuits of electronic components or devices, in particular devices for telecommunications, such as transmitting and receiving antennas and / or mobile systems consisting of a coarse protection series circuit of spark gaps or gas discharge between the input terminals and parallel to the spark gaps or gas discharge dischargers switched capacitors, at least one fine protection element between the output terminals and a decoupling impedance between coarse protection series circuit and fine protection element, according to the preamble of
Aus der
Bei der blitzstromtragfähigen Funkenstrecke nach
Bekannt sind weiterhin Überspannungsschutzgeräte der Bezeichnung "Blitzduktor" der Firma DEHN + SÖHNE GmbH + Co. KG, Neumarkt, Deutschland. Derartige Überspannungsschutzgeräte Blitzduktor BVT KKS ALD 75 oder BVT ALD 36 weisen in Reihe geschaltete Gasentladungsableiter mit parallel geschalteten Kondensatoren auf zum Zweck eines sukzessiven Durchschaltens der einzelnen Gasentladungsableiter. Ziel der vorbekannten Ableiter ist es, die Ansprechspannung zwischen den Adern einer Doppelader zu reduzieren. Bei den bekannten Überspannungsschutzgeräten wird durch die Reihenschaltung der Funkenstrecken bzw. Gasentladungsableiter eine Addition der Bogenbrennspannung erreicht, so dass eine Erhöhung der zulässigen Betriebsspannung gegeben ist. Liegt die Summe der Bogenbrennspannungen der einzelnen Komponenten oberhalb der Betriebsspannung, erfolgt ein Löschen, d.h. ein Ausschalten der Ableiter unabhängig vom im Fall des Ansprechens der Ableiter fließenden Strom.Also known are overvoltage protection devices called "Blitzduktor" DEHN + SÖHNE GmbH + Co. KG, Neumarkt, Germany. Such overvoltage arresters BVD KKS ALD 75 or BVT ALD 36 have series-connected gas discharge arresters with capacitors connected in parallel for the purpose of a successive switching through of the individual gas discharge arresters. The aim of the known arrester is to reduce the response voltage between the wires of a double wire. In the known overvoltage protection devices addition of the arc voltage is achieved by the series connection of the spark gaps or gas discharge, so that an increase in the allowable operating voltage is given. If the sum of the arc burn voltages of the individual components is above the operating voltage, erase, i. switching off the arresters independently of the current flowing in the event of the arresters being activated.
Aus dem Vorgenannten ist es Aufgabe der Erfindung, eine weiterentwickelte Schaltungsanordnung zum Überspannungsschutz in Gleichstrom-Versorgungskreisen von elektronischen Komponenten oder Geräten, insbesondere Geräten der Mobilfunktechnik anzugeben, welche sicherstellt, dass der erforderliche Überspannungsschutz unabhängig vom Betriebsstrom bzw. Nennstrom gegeben ist. Diesbezüglich wird auf den an sich bekannten Gedanken der Reihenschaltung von Gasableitern zurückgegriffen und eine damit erreichte Addition der Bogenbrennspannung genutzt, so dass ein Löschen bei höheren Nennspannungen möglich ist. Die erfindungsgemäße Lösung soll einen niedrigen Schutzpegel von ≤ 100 V gewährleisten, um die Eingangsschaltung von Stromversorgungen oder aber von Antennen bzw. Verstärkern bei Mobilfunkanlagen zu sichern. Insofern soll die zu schaffende Schaltung einen Überspannungsschutz für unterschiedliche Komponenten ermöglichen, um den installationsseitigen und kostenseitigen Aufwand zu reduzieren.From the foregoing, it is an object of the invention to provide a further developed circuit arrangement for overvoltage protection in DC power supply circuits of electronic components or devices, in particular devices of mobile technology, which ensures that the required overvoltage protection is given regardless of the operating current or rated current. In this regard, recourse is had to the idea known per se of the series connection of gas discharge tubes and an addition of the arc combustion voltage achieved thereby is used, so that a quenching at higher nominal voltages is possible. The solution according to the invention is intended to ensure a low protection level of ≦ 100 V in order to secure the input circuit of power supplies or of antennas or amplifiers in mobile radio systems. In this respect, the circuit to be created should enable overvoltage protection for different components in order to reduce the installation-side and cost-side effort.
Die Lösung der Aufgabe der Erfindung erfolgt durch die Merkmalskombination nach Anspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen darstellen,The object of the invention is achieved by the feature combination according to
Durch die Reihenschaltung von Gasentladungsableitern oder Funkenstrecken und die damit erreichte Addition der einzelnen Bogenbrennspannungen wird erfindungsgemäß ein Löschen für Betriebsspannungen bis zur Summe der Bogenbrennspannung erreicht, ohne dass eine Einschränkung der Schaltungsanordnung auf einen maximalen Betriebsstrom oder Fehlerstrom vorliegt.By the series connection of gas discharge arresters or spark gaps and thus achieved addition of the individual arc combustion voltages, a deletion for operating voltages is achieved according to the invention up to the sum of the arc voltage without a limitation of the circuit arrangement to a maximum operating current or fault current.
Durch die parallel zu den Gasentladungsableitern geschalteten Kapazitäten (Kondensatoren) wird eine Steuerung der Spannungsaufteilung erreicht mit der Folge, dass die Gasentladungsableiter sequenziell durchschalten. Hierdurch wird eine Gesamtansprechspannung der Schaltungsanordnung erreicht, die der Ansprechspannung eines einzelnen Gasentladungsableiters entspricht.The capacitors (capacitors) connected in parallel with the gas discharge arresters provide voltage division control, with the result that the gas discharge conductors are switched through sequentially. As a result, an overall response voltage of the circuit arrangement is achieved, which corresponds to the response voltage of a single gas discharge arrester.
Die Auslegung der nachgeordneten, an der Ausgangsklemme befindlichen Feinschutzschaltung ist auf die Bogenbrennspannung der Gesamtanordnung abgestellt.The design of the downstream, located on the output terminal fine protection circuit is placed on the arc voltage of the overall arrangement.
Erfindungsgemäß kann eine sehr niedrige Entkopplungsimpedanz zur Koordination der Gesamtanordnung Grobschutz zu Feinschutz zur Anwendung kommen, da lediglich dafür zu sorgen ist, dass im Stromanstieg vor Erreichen der Belastungsgrenze eingesetzter Dioden als Feinschutzelement ein ausreichender Spannungsabfall entsteht, um die Gasentladungsableiter durchzuschalten. Im Übrigen reduziert sich die notwendige Stromtragfähigkeit des Feinschutzes durch die angestrebte Funktion des sequenziellen Durchschaltens der Grobschutzelemente, d.h. der Gasentladungsableiter oder der Funkenstrecken. Die Entkopplungsimpedanz kann mit Blick auf die niedrigen Impedanzwerte auf hohe Betriebsströme ausgelegt werden.According to the invention, a very low decoupling impedance for coordinating the overall arrangement of coarse protection to fine protection can be used, since it is only necessary to ensure that in the current increase before reaching the load limit of inserted diodes as a fine protection element, a sufficient voltage drop is created to switch on the gas discharge arresters. Incidentally, the required current carrying capacity of the fine protection is reduced by the intended function of the sequential switching of the coarse protection elements, i. the gas discharge tube or the spark gaps. The decoupling impedance can be designed for high operating currents in view of the low impedance values.
Es wird also demnach von einer Schaltungsanordnung zum Überspannungsschutz in Gleichstrom-Versorgungskreisen von elektronischen Komponenten oder Geräten, insbesondere Geräten zur Telekommunikation, wie Sende- und Empfangsantennen und/oder Mobilfunkanlagen ausgegangen, bestehend aus einer Grobschutz-Reihenschaltung von Funkenstrecken oder Gasentladungsableitern zwischen den Eingangsklemmen sowie parallel zu den Funkenstrecken oder Gasentladungsableitern geschalteten Kondensatoren. Weiterhin ist mindestens ein Feinschutzelement zwischen den Ausgangsklemmen angeordnet und es ist eine Entkopplungsimpedanz zwischen der Grobschutz-Reihenschaltung und dem Feinschutzelement vorhanden.Thus, it is therefore assumed that a circuit arrangement for overvoltage protection in DC power supply circuits of electronic components or devices, in particular telecommunications equipment, such as transmitting and receiving antennas and / or mobile devices consisting of a coarse protection series connection of spark gaps or gas discharge between the input terminals and capacitors connected in parallel with the spark gaps or gas discharge conductors. Furthermore, at least one fine protection element is arranged between the output terminals and there is a decoupling impedance between the coarse protection series circuit and the fine protection element.
Erfindungsgemäß sind die Kapazitätswerte der Kondensatoren um ein Vielfaches größer als die Kapazitätswerte der Gasentladungsableiter oder Funkenstrecken. Wie bereits erwähnt, ist die Induktivität der Entkopplungsimpedanz so ausgelegt, dass im Stromanstiegsfall ein ausreichender Spannungsabfall resultiert, um die Funkenstrecken oder Gasentladungsableiter durchzuschalten, bevor die Belastungsgrenze des Feinschutzelements erreicht ist.According to the invention, the capacitance values of the capacitors are many times greater than the capacitance values of the gas discharge arresters or spark gaps. As already mentioned, the inductance of the decoupling impedance is designed so that a sufficient voltage drop results in the current increase case, in order to switch the spark gaps or gas discharge arresters before the load limit of the fine protection element is reached.
Ausgestaltend ist zwischen jedem Verbindungspunkt der Funkenstrecken oder Gasentladungsableiter und dem Erdpotential ein Kondensator geschaltet, wobei das Verhältnis der Kapazitätswerte Gasentladungsableiter bzw. Funkenstrecke zu Kondensator bei im Wesentlichen 1:100 liegt.According to the invention, a capacitor is connected between each connection point of the spark gaps or gas discharge conductors and the earth potential, the ratio of the capacitance values of the gas discharge conductor and the spark gap to the capacitor being substantially 1: 100.
Die Gasentladungsableiter besitzen eine im Wesentlichen gleiche Ansprechspannung, so dass im Überspannungsfall ein sequenzielles Durchschalten der Gasentladungsableiter erfolgen kann.The gas discharge arresters have a substantially equal response voltage, so that in the event of an overvoltage, a sequential switching through of the gas discharge arresters can take place.
Das Feinschutzelement besteht bei einer bevorzugten Ausführungsform aus einer Reihenschaltung von Dioden. Hier kommen insbesondere Suppressordioden bzw. TVS-Dioden zum Einsatz. Die Stand Off-Spannung dieser Dioden der Reihenschaltung ist dabei größer als die Summe der Bogenbrennspannungen der Gasentladungsableiter.The fine protection element consists in a preferred embodiment of a series circuit of diodes. In particular, suppressor diodes or TVS diodes are used here. The stand-off voltage of these diodes of the series connection is greater than the sum of the arc voltage of the gas discharge tube.
Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie von Figuren näher erläutert werden.The invention will be explained below with reference to an embodiment and figures.
Hierbei zeigen:
- Fig. 1
- eine beispielhafte Schaltungsanordnung für eine Betriebsspannung bis 60 V DC und
- Fig. 2
- ein Diagramm des sequenziellen Durchschaltens der Gasentladungsableiter A1 bis A5 nach
Fig. 1 sowie den diesbezüglichen Stromverlauf über der Zeit.
- Fig. 1
- an exemplary circuit arrangement for an operating voltage up to 60 V DC and
- Fig. 2
- a diagram of the sequential switching of the gas discharge arresters A1 to A5 after
Fig. 1 and the related current over time.
Die
An den Verbindungspunkten der Gasentladungsableiter A1 bis A5 sind die Kondensatoren C1 bis C4 gegen Erdpotential bzw. gegen die +V DC-Klemme geschaltet. Die Kapazitätswerte dieser Kondensatoren liegen beispielsweise bei dem 100-fachen der Kapazität der Gasentladungsableiter. Hierdurch wird erreicht, dass zunächst die anstehende Eingangsspannung vollständig am Gasentladungsableiter A5 anliegt. Der Gasentladungsableiter A5 wird daher beim Überschreiten eines spezifizierten Ansprechspannung durchgeschaitet.At the connection points of the gas discharge arresters A1 to A5, the capacitors C1 to C4 are connected to ground potential and to the + V DC terminal, respectively. The capacitance values of these capacitors are, for example, 100 times the capacitance of the gas discharge arresters. This ensures that initially the pending input voltage is applied completely to the gas discharge tube A5. The gas discharge arrester A5 is therefore durchgeschaitet when exceeding a specified threshold voltage.
Danach liegt die Eingangsspannung an der verbleibenden Anordnung A1 bis A4. Die weitere Spannungsaufteilung ergibt sich durch die Kapazität von A4 und C3, wobei das gleiche Verhältnis gilt wie bei A5 zu C4.Thereafter, the input voltage is applied to the remaining arrangement A1 to A4. The further voltage distribution results from the capacitance of A4 and C3, the same ratio applies as in A5 to C4.
Werden Gasentladungsableiter A1 bis A5 mit annähernd gleicher Ansprechspannung verwendet, stellt sich ein sequenzielles Durchschalten der Gasentladungsableiter A5 bis A1 ein.If gas discharge arresters A1 to A5 are used with approximately the same response voltage, a sequential switching through of the gas discharge arresters A5 to A1 occurs.
Die Feinschutzstufe wird durch eine gegenpolige Reihenschaltung von Suppressor- oder TVS-Dioden V1 bis V4 realisiert, wobei für die Dimensionierung des Feinschutzes, bestehend aus den Dioden V1 bis V4, die gewählte Stand Off-Spannung der Dioden höher als die Summe der Bogenbrennspannungen der Ableiter A1 bis A5 ist. Hierdurch werden die Dioden V1 bis V4 nach Ansprechen der Ableiter A5 bis A1 entlastet.The fine protection level is realized by an opposite pole series connection of suppressor or TVS diodes V1 to V4, wherein for the dimensioning of the fine protection, consisting of the diodes V1 to V4, the selected state off-voltage of the diodes higher than the sum of the arc voltage of the arrester A1 to A5 is. As a result, the diodes V1 to V4 are relieved after response of the arrester A5 to A1.
Zwischen der Eingangsklemme -V DC und der Ausgangsklemme -V DC (mit internal gekennzeichnet) befindet sich noch eine Entkopplungsimpedanz L1.Between the input terminal -V DC and the output terminal -V DC (marked with internal) is still a decoupling impedance L1.
Die Induktivität der Spule L1 ist dabei so zu wählen, dass im Stromanstieg vor Erreichen der Belastungsgrenze der Dioden V1 bis V4 ein ausreichender Spannungsabfall an L1 entsteht, um die Gasentladungsableiter A1 bis A4 durchzuschalten.The inductance of the coil L1 is to be chosen so that in the current increase before reaching the load limit of the diodes V1 to V4 sufficient voltage drop occurs at L1 to turn on the gas discharge arresters A1 to A4.
Hier gilt folgender Zusammenhang:
Die beispielhafte Schaltung nach
Dabei ergibt sich folgende beispielhafte Auslegung.This results in the following exemplary interpretation.
Die Gasentladungsableiter A1 bis A5 weisen eine maximale Ansprechspannung von 500 V (1 kV/µs) auf. Die Kapazität der Kondensatoren C1 bis C4 liegt bei ca. 10 nF. Die Kapazität der Gasentladungsableiter liegt bei ca. 1,5 pF.The gas discharge arresters A1 to A5 have a maximum response voltage of 500 V (1 kV / μs). The capacitance of the capacitors C1 to C4 is about 10 nF. The capacity of the gas discharge tube is approx. 1.5 pF.
Die TVS-Dioden V1 bis V4 weisen eine Stand Off-Spannung von 30 V auf. Die maximale Strombelastbarkeit beträgt 250 A (10/350 µs). Die maximale Clamping Voltage liegt bei 100 V.The TVS diodes V1 to V4 have a stand-off voltage of 30V. The maximum current carrying capacity is 250 A (10/350 μs). The maximum clamping voltage is 100 V.
Die Induktivität L1 ergibt sich bei einer anzunehmenden Stromsteilheit dI/dt = 250 A/10 µs : 25 A/µs. Der notwendige Spannungsabfall über L1 liegt bei 500 V - 100 V = 400 V. Damit ergibt sich
Selbstverständlich ist eine adäquate Auslegung für andere Betriebsspannungen und andere Basiswerte der Kapazität von Gasentladungsableitern möglich, ohne den Erfindungsgedanken zu verlassen.Of course, an adequate design for other operating voltages and other basic values of the capacity of gas discharge arresters is possible without departing from the spirit of the invention.
Claims (4)
- A circuit arrangement for surge protection in DC supply circuits of electronic components or devices, in particular devices for telecommunication such as transmitting and receiving antennas and/or mobile communication systems, comprised of a coarse protection series connection of spark gaps or gas discharge arresters (A1 - A5) between the input terminals as well as capacitors (C1 - C4) connected in parallel to the spark gaps or gas discharge arresters (A1 - A5), at least one fine protection element (V1 - V4) between the output terminals and a decoupling impedance (L1) between the coarse protection series connection and the fine protection element,
wherein the capacitance values of the capacitors (C1 - C4) are many times greater than the capacitance values of the gas discharge arresters or spark gaps (A1 - A5), and a capacitor (C1 - C4) is connected between each point of connection of the spark gaps or gas discharge arresters (A1 - A5) and the ground potential, wherein the ratio of the gas discharge arrester or spark gap capacitance values to the capacitor is essentially 1:100, and the inductance of the decoupling impedance (L1) is dimensioned such that when the current rises, there will be a large enough drop in voltage in order to activate the spark gaps or gas discharge arresters (A1 - A5) before the load limit of the fine protection element (V1 - V4) is reached, wherein the dimensioning of the decoupling impedance (L1) is performed according to the relationship - The circuit arrangement according to claim 1,
characterized in that
the gas discharge arresters (A1 - A5) have substantially the same response voltage so that in the event of overload, sequential activating of the gas discharge arresters is performed. - The circuit arrangement according to any one of the preceding claims,
characterized in that
the fine protection element consists of a series connection of diodes (V1 - V4). - The circuit arrangement according to claim 3,
characterized in that
the diodes (V1 - V4) are formed as suppressor diodes or TVS diodes and the stand-off voltage of the diodes of the series connection is greater than the sum of the arc voltages of the arresters (A1 - A5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE202013101705U DE202013101705U1 (en) | 2013-04-22 | 2013-04-22 | Circuit arrangement for overvoltage protection in DC power supply circuits |
PCT/EP2014/056168 WO2014173613A1 (en) | 2013-04-22 | 2014-03-27 | Circuit arrangement for surge protection in dc supply circuits |
Publications (2)
Publication Number | Publication Date |
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EP2989700A1 EP2989700A1 (en) | 2016-03-02 |
EP2989700B1 true EP2989700B1 (en) | 2019-02-20 |
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EP14713824.2A Not-in-force EP2989700B1 (en) | 2013-04-22 | 2014-03-27 | Circuit arrangement for surge protection in dc supply circuits |
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US (1) | US20160094018A1 (en) |
EP (1) | EP2989700B1 (en) |
CN (1) | CN105122562A (en) |
DE (1) | DE202013101705U1 (en) |
WO (1) | WO2014173613A1 (en) |
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CN104300521A (en) * | 2013-07-16 | 2015-01-21 | 中国电信股份有限公司 | Power supply lightning protection device with follow current interruption function |
DE102015200186A1 (en) * | 2015-01-09 | 2016-07-14 | Osram Gmbh | Overvoltage protection device and lamp with such a surge protection device |
CN110971115B (en) * | 2018-09-29 | 2023-08-29 | 中兴通讯股份有限公司 | Lightning surge protection circuit, method, system, storage medium and electronic device |
CN111524536B (en) * | 2019-02-01 | 2023-09-08 | 富士通株式会社 | Signal processing method and information processing apparatus |
CN110071494A (en) * | 2019-06-04 | 2019-07-30 | 深圳市槟城电子有限公司 | A kind of protection circuit and electronic equipment |
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US3934175A (en) * | 1973-12-03 | 1976-01-20 | General Semiconductor Industries, Inc. | Power surge protection system |
DE2547604B2 (en) | 1975-10-24 | 1980-07-31 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Control arrangement for the spark gaps of a surge arrester |
DE29724817U1 (en) | 1997-12-11 | 2004-04-29 | Obo Bettermann Gmbh & Co. Kg | Spark gap capable of carrying the current of lightning strike |
JP2002010484A (en) * | 2000-06-16 | 2002-01-11 | Ntt Docomo Kyushu Inc | Surge absorber |
DE50300047D1 (en) * | 2002-04-11 | 2004-09-16 | Bettermann Obo Gmbh & Co Kg | radio link |
JP3854305B1 (en) * | 2005-12-09 | 2006-12-06 | 均 木嶋 | Overvoltage protector, overvoltage protection method |
US8400744B2 (en) * | 2010-05-19 | 2013-03-19 | Schneider Electric USA, Inc. | Earth leakage detection module with robust transient suppression |
-
2013
- 2013-04-22 DE DE202013101705U patent/DE202013101705U1/en not_active Expired - Lifetime
-
2014
- 2014-03-27 CN CN201480022668.4A patent/CN105122562A/en active Pending
- 2014-03-27 EP EP14713824.2A patent/EP2989700B1/en not_active Not-in-force
- 2014-03-27 WO PCT/EP2014/056168 patent/WO2014173613A1/en active Application Filing
- 2014-03-27 US US14/785,687 patent/US20160094018A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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WO2014173613A1 (en) | 2014-10-30 |
US20160094018A1 (en) | 2016-03-31 |
CN105122562A (en) | 2015-12-02 |
EP2989700A1 (en) | 2016-03-02 |
DE202013101705U1 (en) | 2013-05-03 |
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