SI24618A2 - The set of ignition circuit of the overvoltage protection system with the asymmetrical element - Google Patents
The set of ignition circuit of the overvoltage protection system with the asymmetrical element Download PDFInfo
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- SI24618A2 SI24618A2 SI201400282A SI201400282A SI24618A2 SI 24618 A2 SI24618 A2 SI 24618A2 SI 201400282 A SI201400282 A SI 201400282A SI 201400282 A SI201400282 A SI 201400282A SI 24618 A2 SI24618 A2 SI 24618A2
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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
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
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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
- H01T15/00—Circuits specially adapted for spark gaps, e.g. ignition circuits
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- Emergency Protection Circuit Devices (AREA)
Abstract
Predlagani izum se nanaša na sklop vžignega vezja (1) prenapetostne zaščite z asimetričnim elementom, namenjen aktivaciji iskrišča (4) v simetrični ali asimetrični razporeditvi prve glavne elektrode (5), povezane s prvo vhodno sponko (2), druge glavne elektrode (6), povezane z drugo vhodno sponko (3), in pomožne elektrode (7). Po izumu je predvideno, da je prva glavna elektroda (5) iskrišča (4), priklopljena preko termičnega odklopnika (21), in nato preko vzporedne kombinacije drugega varistorja (9) inprvega kondenzatorja (16) na prvo elektrodo (13) asimetričnega tripolnega odvodnika (12).Srednja elektroda (15) le-tega je preko primarnega navitja (20) transformatorja (18) priklopljena na drugo glavno elektrodo (6) iskrišča (4), katerega pomožna elektroda (7) je preko prvega varistorja (8) povezana z drugo elektrodo (14) asimetričnega tripolnega odvodnika (12), ki je preko sekundarnega navitja (19) transformatorja (18) povezana z drugo glavno elektrodo (6) iskrišča (4). Termični odklopnik (21) je pri tempovezan s toplotno vezavo (22) z drugim varistorjem (9), hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku (12) takšna, da je statična vžigna napetost UI med drugo elektrodo (14) in srednjo elektrodo (15) večja kot statična vžigna napetost U2 med srednjo elektrodo (15) in prvo elektrodo (13).The present invention relates to a circuit of the ignition circuit (1) with an asymmetric element intended for activating the spark (4) in the symmetric or asymmetric arrangement of the first main electrode (5) connected to the first input terminal (2), the second main electrode (6) , connected to the second input terminal (3), and the auxiliary electrodes (7). According to the invention, it is envisaged that the first main electrode (5) is sparked (4) connected via a thermal circuit breaker (21) and then via a parallel combination of the second varistor (9) of the first capacitor (16) to the first electrode (13) of the asymmetric triple arrester (12). The intermediate electrode (15) thereof is connected to the second main electrode (6) of the spark (4) via the primary winding (20) of the transformer (18), the auxiliary electrode (7) being connected via the first varistor (8) with the second electrode (14) of the asymmetric triple arrester (12) which is connected to the second main electrode (6) by the spark (4) via the secondary winding (19) of the transformer (18). The thermal circuit breaker (21) is thermally coupled to a thermal bond (22) with a second varistor (9), while at the same time the voltage ratios on the asymmetric three-pole arrester (12) are such that the static ignition voltage UI is between the second electrode (14) and the middle electrode (15) is greater than the static ignition voltage U2 between the middle electrode (15) and the first electrode (13).
Description
Sklop vžignega vezja prenapetostne zaščite z asimetričnim elementomSurge protection ignition circuit assembly with asymmetrical element
Področje tehnikeThe field of technology
Tehnična rešitev se nanaša na sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom, ki spada na področje električnih zaščitnih naprav, namenjenih omejitvi prenapetosti v varovanem razdelilnem omrežju. Prenapetostna zaščita je sestavljena iz iskrišča, priklopljenega na prvo vhodno sponko in na drugo vhodno sponko, pri čemer je na iskrišče tripolno priklopljeno vžigno vezje prenapetostne zaščite z asimetričnim elementom, realiziranim z asimetričnim tripolnim odvodnikom.The technical solution relates to a circuit of an overvoltage protection circuit with an asymmetrical element that falls within the field of electrical protection devices intended to limit overvoltage in a protected distribution network. Surge protection consists of a spark connected to the first input terminal and to the second input terminal, the spark circuit of which is a three-pole overvoltage protection circuit with an asymmetric element realized with an asymmetric triple arrester.
Dosedanje stanje tehnikeThe prior art
Znane tehnične rešitve modernih odvodnikov toka strele uporabljajo zmogljiva iskrišča, opremljena z vžignim vezjem, ki omogoča hitro aktivacijo iskrišča ob pojavu prenapetostnega impulza. Konstrukcija iskrišča poleg tega omogoča njegovo hitro deaktivacijo, torej prekinitev naslednjega toka, ki prehaja po zamrtju prehodnega pojava prenapetostnega impulza. Različne izvedbe vžignih vezij, ki služijo aktivaciji iskre med prvo glavno elektrodo in drugo glavno elektrodo iskrišča z uporabo pomožne elektrode, vsebujejo transformator. Glavna pomanjkljivost znanih rešitev vžignih vezij s transformatorjem je dejstvo, da je velikost toka, ki prehaja med pomožno elektrodo in prvo glavno elektrodo ali drugo glavno elektrodo iskrišča izrazito omejena z impedanco sekundarnega navitja transformatorja, s čimer se podaljšuje čas, potreben za vžig iskrišča, kot posledica omejenega prereza žic sekundarnega navitja transformatorja lahko pride tudi do uničenja sekundarnega navitja transformatorja zaradi toplotne preobremenitve in torej do izgube funkcionalnosti prenapetostne zaščite in do nadaljnje nevarnosti za varovano napravo s prenapetostnim impulzom.The well-known technical solutions of modern lightning current arresters utilize high-power sparks equipped with an ignition circuit that enables rapid activation of the spark when a surge pulse occurs. The design of the spark gap also enables its rapid deactivation, that is, the interruption of the next current, which passes after the transient phenomenon of the surge pulse is reversed. Various embodiments of ignition circuits serving to activate the spark between the first main electrode and the second main spark electrode using an auxiliary electrode comprise a transformer. A major disadvantage of known solutions of transformer ignition circuits is the fact that the magnitude of the current passing between the auxiliary electrode and the first main electrode or the second main spark electrode is severely limited by the impedance of the secondary winding of the transformer, thereby extending the time required to ignite the spark. the limited cross-section of the transformer secondary windings can also lead to the destruction of the transformer secondary winding due to thermal overload and therefore loss of overvoltage protection functionality and further danger to the protected device with overvoltage impulse.
Primer takšne rešitve je dokument US6111740 „Overvoltage protection system ond overvoltage protection element for an overvoltage protection system“, kjer sistem prenapetostne zaščite tvori iskrišče z dvema glavnima elektrodama in vsaj eno pomožno elektrodo, ki je priklopljena na izhodu vžigne napetosti vžignega vezja. Vžigno vezje je opremljeno z vžignim kondenzatorjem, vžignim stikalnim elementom in transformatorjem • · s primarnim in sekundarnim navitjem. Izhod iz sekundarnega navitja predstavlja izhod vžigne napetosti vžignega vezja. Pomanjkljivost tega sklopa je visoka impedanca sekundarnega navitja, ki omejuje tok, ki se pretaka skozi pomožno elektrodo in eno izmed glavnih elektrod. Zaradi preobremenitve lahko pride do poškodovanja vžignega vezja in do izgube funkcionalnosti prenapetostne zaščite. Zato je v sklopu, objavljenem v dokumentu DE19914313 „Overvoltage protection system for e.g. protecting electronic equipment against transient overvoltages caused by lightening discharge, provides monitoring equipment to ignition Circuit with thermal and/or dynamic overload svritching off‘ vžigno vezje dopolnjeno z zaščitnimi elementi in signalizacijo obratovalnega stanja.An example of such a solution is US6111740 "Overvoltage protection system ond overvoltage protection element for an overvoltage protection system", where an overvoltage protection system forms a spark with two main electrodes and at least one auxiliary electrode connected at the ignition output of the ignition circuit. The ignition circuit is equipped with an ignition capacitor, an ignition switch element and a transformer • · with primary and secondary windings. The secondary winding output represents the output of the ignition voltage of the ignition circuit. The disadvantage of this assembly is the high impedance of the secondary winding, which limits the current flowing through the auxiliary electrode and one of the main electrodes. Overloading can cause damage to the ignition circuit and loss of overvoltage protection functionality. Therefore, in the assembly published in document DE19914313, "Overvoltage protection system for e.g. protection electronic equipment against transient overvoltages caused by lightening discharge, provides monitoring equipment for ignition Circuit with thermal and / or dynamic overload svritching off 'ignition circuit complete with safety elements and operational status signaling.
Drugi znani sklop vžignega vezja prenapetostne zaščite, ki je del dokumenta FR2902579 „Electrical installation protection device i.e. surge suppressor, has triggering unit passing spark gaps from blocking State, in which gaps oppose current circulation, to passing State, in which gaps permit fault current to flow in branches, rešuje sinhroni vžig dveh zaporedno vezanih prenapetostnih elementov, ki ju tvori iskrišče, pri tem vžigno vezje vsebuje dve sekundarni navitji, pri čemer se zgoraj omenjene pomanjkljivosti pomnožijo.Another known surge protection ignition circuit assembly which is part of document FR2902579 'Electrical installation protection device i.e. surge suppressor, has a triggering unit passing spark gaps from blocking State, and which gaps oppose current circulation, to passing state, and which gaps permit fault current to flow in branches, solves the synchronous ignition of two sequentially coupled surge elements formed by the spark at the ignition circuit contains two secondary windings, multiplying the aforementioned disadvantages.
V dokumentu US4683514 „Surge voltage protective Circuit arrangements je med pomožno elektrodo iskrišča in sekundarnega navitja transformatorja vključen zaščitni rezistor, ki sicer deloma ščiti navitje pred poškodovanjem, poleg tega pa omejuje tok ter s tem tudi vžigno sposobnost vžignega vezja in hkrati omejuje stabilnost loka.US4683514 "Surge voltage protective Circuit arrangements includes a protective resistor between the auxiliary electrode of the spark gap and the secondary winding of the transformer, which partly protects the winding against damage, in addition limiting the current and thus the ignition capability of the ignition circuit while limiting arc stability.
Podobno sklop vžignega vezja prenapetostne zaščite, omenjen v dokumentu US2003007303 „Pressure-resistant encapsulated air-gap arrangement for the draining off of damaging perturbances due to overvoltages“ predstavlja samo osnovne rešitve vezja, pomanjkljivost visoke impedance sekundarnega navitja transformatorja je še vedno prisotna.Similarly, the surge protection ignition circuit assembly mentioned in document US2003007303 "Pressure-resistant encapsulated air gap gap arrangement for damaging perturbances due to overvoltages" represents only basic circuit solutions, the disadvantage of high transformer secondary winding impedance is still present.
Dokument CZ25171 Sklop vžignega vezja prenapetostne zaščite predstavlja samo izboljšane rešitve vezja, pomanjkljivost visoke impedance sekundarnega navitja tudi tu ostaja prisotna.Document CZ25171 The surge protection ignition circuit assembly presents only improved circuit solutions, and the disadvantage of high secondary impedance of the winding remains here.
Bistvo tehnične rešitveThe essence of the technical solution
Omenjene pomanjkljivosti v veliki meri odpravlja sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom, ki je namenjen aktivaciji iskrišča v simetrični ali asimetrični razporeditvi prve glavne elektrode, povezane s prvo vhodno sponko, druge glavne elektrode, povezane z drugo vhodno sponko, in pomožne elektrode, katerega bistvo je v tem, daje prva glavna elektroda iskrišča, priklopljena preko termičnega odklopnika, in nato preko vzporedne kombinacije drugega varistorja in prvega kondenzatorja na prvo elektrodo asimetričnega tripolnega odvodnika, katerega srednja elektroda je preko primarnega navitja transformatorja priklopljena na drugo glavno elektrodo iskrišča, katerega pomožna elektroda je preko prvega varistorja povezana z drugo elektrodo asimetričnega tripolnega odvodnika, ki je preko sekundarnega navitja transformatorja povezana z drugo glavno elektrodo iskrišča, pri tem je termični odklopnik s toplotno vezavo povezan z drugim varistorjem, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku takšna, da je statična vžigna napetost Ul med drugo elektrodo in srednjo elektrodo večja kot statična vžigna napetost U2 med srednjo elektrodo in prvo elektrodo.These drawbacks are largely eliminated by an overvoltage protection circuit assembly with an asymmetric element designed to activate the spark in the symmetrical or asymmetric arrangement of the first main electrode connected to the first input terminal, the second major electrodes connected to the second input terminal, and the auxiliary electrodes whose the point is that the first main spark electrode is connected via a thermal circuit breaker and then through a parallel combination of the second varistor and the first capacitor to the first electrode of the asymmetric tripolar arrester whose middle electrode is connected to the second spark spark electrode via the primary transformer winding the electrode is connected via the first varistor to the second electrode of the asymmetric tripolar arrester, which is connected to the second main spark electrode via the secondary winding of the transformer, with the thermal circuit-breaker connected to the second varistor simultaneously however, the voltage ratios on the asymmetric three-pole arrester are such that the static ignition voltage Ul between the second electrode and the middle electrode is greater than the static ignition voltage U2 between the middle electrode and the first electrode.
Prenapetostno zaščito sestavlja iskrišče, opremljeno s prvo glavno elektrodo, drugo glavno elektrodo in pomožno elektrodo za enostavnejši preboj med prvo glavno elektrodo in drugo glavno elektrodo, čemur služi sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom.The surge protector consists of a spark gap equipped with a first main electrode, a second main electrode and an auxiliary electrode for easier penetration between the first main electrode and the second main electrode, which is served by an overvoltage protection circuit assembly with an asymmetric element.
Prednosti tega sklopa vžignega vezja prenapetostne zaščite so v povečani vžigni zanesljivosti oziroma aktivacijski sposobnosti vžignega vezja, kar je posledica uporabe asimetričnega elementa, realiziranega z asimetričnim tripolnim odvodnikom.The advantages of this circuit of the overvoltage protection circuitry are the increased ignition reliability or the activation ability of the ignition circuitry, which is due to the use of an asymmetric element realized with an asymmetric tripolar arrester.
Za modificiran predhodni sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom je značilno, da je med vozlišče, ki povezuje prvo elektrodo asimetričnega tripolnega odvodnika z drugim varistorjem in prvim kondenzatorjem ter med drugo glavno elektrodo iskrišča, vstavljen drugi kondenzator.A modified pre-circuit of an overvoltage protection ignition circuit with an asymmetric element is characterized by the fact that a second capacitor is inserted between the node connecting the first electrode of the asymmetric three-pole arrester to the second varistor and the first capacitor and between the second main spark electrode.
Za drugi sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom, namenjen aktivaciji iskrišča v simetrični ali asimetrični razporeditvi prve glavne elektrode, povezane s prvo vhodno sponko, druge glavne elektrode, povezane z drugo vhodno sponko in pomožne elektrode, je značilno, da je prva glavna elektroda iskrišča priklopljena preko termičnega odklopnika in preko drugega varistorja na prvo elektrodo asimetričnega tripolnega odvodnika, katerega srednja elektroda je preko primarnega navitja transformatorja priklopljena na drugo glavno elektrodo iskrišča, katerega pomožna • · e · elektroda je preko prvega varistorja povezana z drugo elektrodo asimetričnega tripolnega odvodnika, ki je preko sekundarnega navitja transformatorja povezana z drugo glavno elektrodo iskrišča, pri čemer je na vozlišče, ki povezuje termični odklopnik z drugim varistorjem z enim koncem priklopljena zaporedna kombinacija rezistorja in prvega kondenzatorja, z drugim koncem povezana z drugo glavno elektrodo iskrišča, pri tem je termični odklopnik povezan s toplotno vezavo z drugim varistorjem in so napetostna razmerja na asimetričnem tripolnem odvodniku takšna, da je statična vžigna napetost Ul med drugo elektrodo in srednjo elektrodo večja kot statična vžigna napetost U2 med srednjo elektrodo in prvo elektrodo.The second circuit of an overvoltage protection circuit with an asymmetric element intended to activate the spark in the symmetrical or asymmetric arrangement of the first main electrode connected to the first input terminal, the second main electrodes connected to the second input terminal and the auxiliary electrodes, is characterized by the first main electrode sparks connected via a thermal circuit breaker and via the second varistor to the first electrode of the asymmetric tripolar arrester whose middle electrode is connected to the second main spark electrode via the transformer primary winding whose auxiliary • · e · electrode is connected to the second electrode of the asymmetric tripoli via the first varistor connected via a secondary transformer winding to a second main spark electrode with a series of resistors and a first capacitor connected to the node connecting the thermal circuit breaker to the second varistor at one end is connected to the second main spark electrode, the thermal circuit breaker being coupled to thermal bonding to the second varistor, and the voltage ratios on the asymmetric three-pole arrester are such that the static ignition voltage Ul between the second electrode and the middle electrode is greater than the static ignition voltage U2 between the middle electrode and the first electrode.
Za naslednji možen sklop vžignega vezja z asimetričnim elementom, namenjen aktivaciji iskrišča v simetrični ali asimetrični razporeditvi prve glavne elektrode, povezane s prvo vhodno sponko, druge glavne elektrode, povezane z drugo vhodno sponko in pomožne elektrode, je značilno, da je prva glavna elektroda iskrišča priklopljena preko termičnega odklopnika, in nato preko vzporedne kombinacije drugega varistorja in prvega kondenzatorja na en pol napetostno odvisnega stikalnega elementa, katerega drugi pol je preko primarnega navitja transformatorja priključen na drugo glavno elektrodo iskrišča, katerega pomožna elektroda je preko prvega varistorja povezana s prvo elektrodo asimetričnega tripolnega odvodnika, ki je preko tretjega varistorja povezan z njegovo srednjo elektrodo, ta je preko sekundarnega navitja transformatorja povezana z drugo glavno elektrodo iskrišča, ki je povezana z drugo elektrodo asimetričnega tripolnega odvodnika, pri tem je termični odklopnik povezan s toplotno vezavo z drugim varistorjem, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku takšna, da je statična vžigna napetost Ul med drugo elektrodo in srednjo elektrodo večja kot statična vžigna napetost U2 med srednjo elektrodo in prvo elektrodo.The next possible ignition circuit assembly with an asymmetric element intended to activate the spark in the symmetrical or asymmetric arrangement of the first main electrode connected to the first input terminal, the second main electrodes connected to the second input terminal and the auxiliary electrodes, is characterized by the first main spark electrode connected via a thermal circuit breaker and then via a parallel combination of the second varistor and the first capacitor to one pole of a voltage-dependent switch element whose second pole is connected to the second main spark electrode via the primary winding of the transformer whose auxiliary electrode is connected to the first asymmetric electrode via the first varistor a three-pole arrestor connected via its third varistor to its middle electrode, which is connected to the second main spark electrode via the secondary winding of the transformer, which is connected to another electrode of the asymmetric three-pole arrestor, the thermal circuit breaker p coupled by thermal bonding to the second varistor, and at the same time the voltage ratios on the asymmetric tripolar arrester are such that the static ignition voltage Ul between the second electrode and the middle electrode is greater than the static ignition voltage U2 between the middle electrode and the first electrode.
Za modificiran predhodni sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom je značilno, da je med vozlišče, ki povezuje napetostno odvisni stikalni element z drugim varistorjem in prvim kondenzatorjem, in med drugo glavno elektrodo iskrišča, vstavljen drugi kondenzator.A modified pre-circuit of an overvoltage protection ignition circuit with an asymmetric element is characterized by the fact that a second capacitor is inserted between the node connecting the voltage-dependent switch element with the second varistor and the first capacitor and between the second main spark electrode.
Za zadnji sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom, namenjen aktivaciji iskrišča v simetrični ali asimetrični razporeditvi prve glavne elektrode, povezane s prvo vhodno sponko, druge glavne elektrode, povezane z drugo vhodno sponko, in pomožne elektrode je značilno, da je prva glavna elektroda iskrišča priklopljena preko termičnega odklopnika in drugega varistorja na en pol napetostno odvisnega stikalnega elementa, katerega drugi pol je preko primarnega navitja transformatorja priklopljen na drugo glavno elektrodo iskrišča, katerega pomožna elektroda je preko prvega varistorja povezana s prvo elektrodo asimetričnega tripolnega odvodnika, ki je preko tretjega varistorja povezan z njegovo srednjo elektrodo, ta je preko sekundarnega navitja transformatorja povezana z drugo glavno elektrodo iskrišča, ki je povezana z drugo elektrodo asimetričnega tripolnega odvodnika, pri čemer je na vozlišče, ki povezuje termični odklopnik z drugim varistorjem z enim koncem priklopljena zaporedna kombinacija rezistorja in prvega kondenzatorja, z drugim koncem povezana z drugo glavno elektrodo iskrišča, pri tem je termični odklopnik povezan s toplotno vezavo z drugim varistorjem, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku takšna, da je statična vžigna napetost Ul med drugo elektrodo in srednjo elektrodo večja kot statična vžigna napetost U2 med srednjo elektrodo in prvo elektrodo.The last circuit of an overvoltage protection circuit with an asymmetric element intended to activate the spark in the symmetrical or asymmetric arrangement of the first main electrode connected to the first input terminal, the second main electrodes connected to the second input terminal, and the auxiliary electrodes is characterized by the first main electrode sparks connected via a thermal circuit breaker and a second varistor to one pole of a voltage-dependent switch element whose second pole is connected to the second main spark electrode via a primary transformer winding whose auxiliary electrode is connected to the first electrode of an asymmetric three-pole arrestor via the first varistor varistor connected to its middle electrode, which is connected via the secondary winding of the transformer to another main spark electrode, which is connected to another electrode of an asymmetric three-pole arrestor, to a node connecting the thermal circuit breaker to another varist a sequential combination of a resistor and a first capacitor connected to the end by a single end connected to the second main spark electrode at the other end, the thermal circuit breaker connected to a thermal connection with the second varistor, while the voltage ratios on the asymmetric three-pole arrester are such that it is static ignition the voltage Ul between the second electrode and the middle electrode is greater than the static ignition voltage U2 between the middle electrode and the first electrode.
V sklopih vžignega vezja prenapetostne zaščite z asimetričnim elementom, kjer se pojavlja napetostno odvisni stikalni element, tega prednostno tvori dvopolni odvodnik ali dvopolno elektronsko vezje na osnovi močnostnih stikalnih polprevodnikov.In circuits of an overvoltage protection circuit with an asymmetric element, where a voltage-dependent switching element occurs, this is preferably formed by a two-pole arrestor or a two-pole electronic circuit based on power switching semiconductors.
Pregled slik na načrtihViewing pictures on plans
Tehnična rešitev bo natančneje pojasnjena s pomočjo načrtov, na katerih slika 1 prikazuje blokovno shemo sklopa vžignega vezja prenapetostne zaščite z asimetričnim elementom.The technical solution will be explained in more detail by means of the plans in which Figure 1 shows a block diagram of an overvoltage protection circuit assembly with an asymmetric element.
Slika 2 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, prvega kondenzatorja in termičnega odklopnika.Figure 2 shows a schematic diagram of an overvoltage ignition circuit assembly with an asymmetric element consisting of a transformer, an asymmetric three-pole arrestor, a first varistor, a second varistor, a first capacitor and a thermal circuit breaker.
Slika 3 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, prvega kondenzatorja, drugega kondenzatorja in termičnega odklopnika.Figure 3 shows a schematic diagram of an overvoltage ignition circuit assembly with an asymmetric element consisting of a transformer, an asymmetric three-pole arrestor, a first varistor, a second varistor, a first capacitor, a second capacitor, and a thermal circuit breaker.
Slika 4 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja 18, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, prvega kondenzatorja, rezistorja in termičnega odklopnika.Figure 4 shows a schematic diagram of an overvoltage ignition circuit assembly with an asymmetric element consisting of a transformer 18, an asymmetric three-pole arrestor, a first varistor, a second varistor, a first capacitor, a resistor and a thermal circuit breaker.
Slika 5 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, tretjega varistorja, dvopolnega odvodnika, prvega kondenzatorja in termičnega odklopnika.Figure 5 shows a schematic diagram of an overvoltage ignition circuit assembly with an asymmetric element consisting of a transformer, an asymmetric three-pole arrestor, a first varistor, a second varistor, a third varistor, a two-pole arrester, a first capacitor and a thermal circuit breaker.
Slika 6 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, tretjega varistorja, dvopolnega odvodnika, prvega kondenzatorja, drugega kondenzatorja in termičnega odklopnika.Figure 6 shows a schematic diagram of an overvoltage circuit ignition circuit assembly with an asymmetric element consisting of a transformer, an asymmetric three-pole arrestor, a first varistor, a third varistor, a two-pole arrester, a first capacitor, a second capacitor, and a thermal circuit breaker.
Slika 7 prikazuje principialno shemo sklopa vžignega vezja prenapetostne strukture z asimetričnim elementom, ki je sestavljena iz transformatorja, asimetričnega tripolnega odvodnika, prvega varistorja, drugega varistorja, tretjega varistorja, dvopolnega odvodnika, prvega kondenzatorja, rezistorja in termičnega odklopnika.Figure 7 shows a schematic diagram of an overvoltage circuit ignition circuit assembly with an asymmetric element consisting of a transformer, an asymmetric three-pole arrestor, a first varistor, a third varistor, a two-pole arrester, a first capacitor, a resistor and a thermal circuit breaker.
Slika 8 prikazuje napetostna razmerja na asimetričnem tripolnem odvodniku.Figure 8 shows the voltage ratios on an asymmetric three-pole arrester.
Primeri izvedbe tehnične rešitveExamples of technical solution implementation
Blokovna shema sklopa vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom je glede na sliko 1 sestavljena Iz iskrišča 4, priklopljenega na prvo vhodno sponko 2 in na drugo vhodno sponko 3, pri čemer je na iskrišče 4 tripolno priklopljeno vžigno vezje 1 prenapetostne zaščite z asimetričnim elementom.Block diagram of an asymmetric element overvoltage circuit assembly 1 according to Figure 1 consists of a spark gap 4 connected to the first input terminal 2 and to a second input terminal 3, wherein a three-pole overvoltage protection circuit 1 with an asymmetric element is connected to the spark gap 4 .
Za sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom glede na sliko 2, namenjen aktivaciji iskrišča 4 v simetrični ali asimetrični razporeditvi prve glavne elektrode 5, povezane s prvo vhodno sponko 2, druge glavne elektrode 6, povezane z drugo vhodno sponko 3, in pomožne elektrode 7, je značilno, da je prva glavna elektroda 5 iskrišča 4, priklopljena preko termičnega odklopnika 21, in nato preko vzporedne kombinacije drugega varistorja 9 in prvega kondenzatorja 16 na prvo elektrodo 13 asimetričnega tripolnega odvodnika 12, katerega srednja elektroda 15 je preko primarnega navitja 20 transformatorja 18 priklopljena na drugo glavno elektrodo 6 iskrišča 4, katerega • · pomožna elektroda 7 je preko prvega varistorja 8 povezana z drugo elektrodo 14 asimetričnega tripolnega odvodnika 12, ki je preko sekundarnega navitja 19 transformatorja 18 povezan z drugo glavno elektrodo 6 iskrišča 4, pri tem je termični odklopnik 21 povezan s toplotno vezavo 22 z drugim varistorjem 9, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku 12 takšna, da je statična vžigna napetost Ul med drugo elektrodo 14 in srednjo elektrodo 15 večja kot statična vžigna napetost U2 med srednjo elektrodo 15 in prvo elektrodo 13.For an overvoltage protection circuit 1 assembly with an asymmetric element according to Figure 2, intended to activate the spark gap 4 in a symmetrical or asymmetric arrangement of the first main electrode 5 connected to the first input terminal 2, the second main electrodes 6 connected to the second input terminal 3, and the auxiliary electrode 7, characterized in that the first main electrode 5 of the spark 4 is connected via a thermal circuit breaker 21 and then via a parallel combination of the second varistor 9 and the first capacitor 16 to the first electrode 13 of the asymmetric three-pole arrestor 12, whose middle electrode 15 is via the primary winding 20 of the transformer 18 is connected to the second main electrode 6 of the spark 4, whose auxiliary electrode 7 is connected to the second electrode 14 of the asymmetric tripolar arrestor 12 via the first varistor 8, which is connected to the second main electrode 6 of the spark 4 via the secondary winding 19 of the transformer 18. the thermal circuit breaker 21 being connected to the thermal circuit 2 2 with the second varistor 9, and at the same time the voltage ratios at the asymmetric tripolar arrester 12 are such that the static ignition voltage Ul between the second electrode 14 and the middle electrode 15 is greater than the static ignition voltage U2 between the middle electrode 15 and the first electrode 13.
Funkcija sklopa vžignega vezja 1 prenapetostne zaščite glede na sliko 2 je v tem, da je v stanju brez prenapetosti med prvo vhodno sponko 2 in drugo vhodno sponko 3 obratovalna napetost zaščitenega razdelilnega omrežja, ki ne zadošča za vžig iskre med prvo elektrodo in srednjo elektrodo 15 asimetričnega tripolnega odvodnika 12. Če se med prvo vhodno sponko 2 in drugo vhodno sponko 3 pojavi prenapetostni impulz, pride do vžiga iskre med prvo elektrodo 13 in srednjo elektrodo 15 asimetričnega tripolnega odvodnika 12, pri čemer drugi varistor 9 izrazito zmanjša svojo upornost in tokovni impulz, ki prehaja skozi primarno navitje 20 transformatorja 18 indicira v njegovem sekundarnem navitju 19 visoko napetost, ki je privedena preko prvega varistorja 8 na pomožno elektrodo 7 iskrišča 4 in posledično pride do vžiga iskre med pomožno elektrodo 7 in prvo glavno elektrodo 5 ali drugo glavno elektrodo 6 iskrišča 4. K ohranitvi te iskre prispeva prvi varistor 8 s tem, da izrazito zmanjša svojo upornost. Nato, kot posledica ionizacije prostora med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4, pride do vžiga iskre med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4. Potem, kot posledica ionizacije prostora med prvo elektrodo 13 in srednjo elektrodo 15 asimetričnega tripolnega odvodnika 12 pride do ionizacije prostora tudi med drugo elektrodo 14 in srednjo elektrodo 15 asimetričnega tripolnega odvodnika 12 in do vžiga iskre med drugo elektrodo in srednjo elektrodo 15 ter izrazitega zmanjšanja impedance med njima, zaradi česar pride do priklopa primarnega navitja 20 transformatorja 18 z nižjo impedanco vzporedno na sekundarno navitje 19 transformatorja 18 z višjo notranjo impedanco, kar močno poveča tok v pomožni elektrodi 7 iskrišča 4, s tem pa se izboljša zanesljivost aktivacij skega oziroma ionizacij skega učinka pomožne elektrode 7 iskrišča 4.The function of the ignition circuit assembly 1 of the overvoltage protection according to Figure 2 is that in a non-voltage state between the first input terminal 2 and the second input terminal 3, the operating voltage of the protected distribution network, which is not sufficient to ignite a spark between the first electrode and the middle electrode 15 asymmetric tripolar arrester 12. If an overvoltage pulse occurs between the first input terminal 2 and the second input terminal 3, a spark ignites between the first electrode 13 and the middle electrode 15 of the asymmetric tripolar arrester 12, with the second varistor 9 markedly reducing its resistance and current pulse passing through the primary winding 20 of the transformer 18 indicates in its secondary winding 19 a high voltage, which is supplied via the first varistor 8 to the auxiliary electrode 7 of the spark 4 and consequently spark ignites between the auxiliary electrode 7 and the first main electrode 5 or the second main electrode 6 sparkles 4. The first varistor 8 contributes to the conservation of this spark by decl nitrite reduces its resistance. Then, as a result of the ionization of the space between the first main electrode 5 and the second main electrode 6 of the spark 4, a spark ignites between the first main electrode 5 and the second main electrode 6 of the spark 4. Then, as a result of the ionization of the space between the first electrode 13 and the middle electrode 15 the asymmetric tripolar arrestor 12 also ionises the space between the second electrode 14 and the middle electrode 15 of the asymmetric tripolar arrester 12 and ignites the spark between the second electrode and the middle electrode 15 and results in a marked decrease in the impedance between them, resulting in the connection of the primary winding 20 of the transformer 18 with lower impedance parallel to the secondary winding 19 of the transformer 18 with a higher internal impedance, which greatly increases the current in the auxiliary electrode 7 of the spark 4, thereby improving the reliability of the activation or ionization effect of the auxiliary electrode 7 of the spark 4.
Zaradi padca napetosti med prvo glavno elektrodo 5 in drugo glavno elektrodo 6 iskrišča 4 postopoma pada tudi tok, ki prehaja skozi pomožno elektrodo 7, prvi varistor 8 povečuje svojo upornost, enako tako tudi drugi varistor 9 povečuje svojo upornost, s čimer se oba vrneta v začetno stanje in posledično tok med pomožno elektrodo 7 in prvo glavno « · elektrodo 5 ali drugo glavno elektrodo 6 iskrišča 4 preneha teči. Asimetrični tripolni odvodnik 12 se povrne v prvotno stanje, razen notranje impedance. Kondenzator 16 izboljšuje dinamične lastnosti vžignega vezja.Due to the voltage drop between the first main electrode 5 and the second main electrode 6 of the spark gap 4, the current passing through the auxiliary electrode 7 gradually drops, and the first varistor 8 increases its resistance, as well as the second varistor 9 increases its resistance, thereby returning both to the initial state and, consequently, the flow between the auxiliary electrode 7 and the first main electrode 5 or the second main electrode 6 of the spark gap 4 ceases to flow. The asymmetric three-pole arrester 12 returns to its original state except internal impedance. The capacitor 16 improves the dynamic properties of the ignition circuit.
Termični odklopnik 21 omogoča odklop vžignega vezja 1 prenapetostne zaščite od varovanega razdelilnega omrežja v primeru toplotne preobremenitve in nedopustnega segrevanja ali pregrevanja drugega varistorja 9.The thermal circuit breaker 21 enables the disconnection of the ignition circuit 1 of the overvoltage protection from the protected distribution network in the event of thermal overload and unacceptable heating or overheating of another varistor 9.
Za modificiran predhodni sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom je glede na sliko 3, značilno, da je med vozlišče, ki povezuje prvo elektrodo 13 asimetričnega tripolnega odvodnika 12 z drugim varistorjem 9 in prvim kondenzatorjem 16, ter med drugo glavno elektrodo 6 iskrišča 4, vstavljen drugi kondenzator 17.The modified pre-circuit of the overvoltage protection circuit 1 with the asymmetric element is characterized by the fact that, between the node connecting the first electrode 13 of the asymmetric three-pole arrester 12 to the second varistor 9 and the first capacitor 16, and between the second main spark electrode 6 4, a second capacitor 17 is inserted.
Za drugi sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom glede na sliko 4, namenjen aktivaciji iskrišča 4 v simetrični ali asimetrični razporeditvi prve glavne elektrode 5, povezane s prvo vhodno sponko 2, druge glavne elektrode 6, povezane z drugo vhodno sponko 3, in pomožne elektrode 7 je značilno, da je prva glavna elektroda 5 iskrišča 4, priklopljena preko termičnega odklopnika 21 in preko drugega varistorja 9 na prvo elektrodo 13 asimetričnega tripolnega odvodnika 12, katerega srednja elektroda 15 je preko primarnega navitja 20 transformatorja 18 priklopljena na drugo glavno elektrodo 6 iskrišča 4, katerega pomožna elektroda 7 je preko prvega varistorja 8 povezana z drugo elektrodo 14 asimetričnega tripolnega odvodnika 12, ki je preko sekundarnega navitja 19 transformatorja 18 povezana z drugo glavno elektrodo 6 iskrišča 4, pri čemer je na vozlišče, ki povezuje termični odklopnik 21 z drugim varistorjem 9 z enim koncem priklopljena zaporedna kombinacija rezistorja 23 in prvega kondenzatorja 16, z drugim koncem povezana z drugo glavno elektrodo 6 iskrišča 4, pri tem je termični odklopnik 21 povezan s toplotno vezavo 22 z drugim varistorjem 9, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku 12 takšna, daje statična vžigna napetost Ul med drugo elektrodo 14 in srednjo elektrodo 15 večja kot statična vžigna napetost U2 med srednjo elektrodo 15 in prvo elektrodo 13.For the second circuit of the overvoltage protection circuit 1 with an asymmetric element according to Figure 4, intended to activate the spark gap 4 in the symmetrical or asymmetric arrangement of the first main electrode 5 connected to the first input terminal 2, the second main electrodes 6 connected to the second input terminal 3, and the auxiliary electrode 7 is characterized in that the first main electrode 5 of the spark gap 4 is connected via a thermal circuit breaker 21 and through the second varistor 9 to the first electrode 13 of the asymmetric tripolar arrestor 12, whose middle electrode 15 is connected to the second main electrode via the primary winding 20 of the transformer 18 6 of the spark 4 whose auxiliary electrode 7 is connected via the first varistor 8 to the second electrode 14 of the asymmetric three-pole arrestor 12, which is connected to the second main spark electrode 6 of the transformer 18 via the secondary winding 19 of the spark, 4 to the node connecting the thermal circuit breaker. 21 with another varistor 9 with one end coupled seq a line combination of resistor 23 and first capacitor 16 connected to the second main electrode 6 of the spark gap 4 by the second end, the thermal circuit breaker 21 being connected to the thermal circuit 22 by the second varistor 9, and at the same time the voltage ratios on the asymmetric three-pole arrester 12 are such that the static ignition voltage Ul between the second electrode 14 and the middle electrode 15 is greater than the static ignition voltage U2 between the middle electrode 15 and the first electrode 13.
Za naslednji možen sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom glede na sliko 5, namenjen aktivaciji iskrišča 4 v simetrični ali asimetrični razporeditvi prve glavne elektrode 5, povezane s prvo vhodno sponko 2, druge glavne elektrode 6, povezane z drugo vhodno sponko 3, in pomožne elektrode 7, je značilno, da je prva glavna elektroda 5 iskrišča 4, priklopljena preko termičnega odklopnika 21, in nato preko vzporedne kombinacije drugega varistorja 9 in prvega kondenzatorja 16 na en pol napetostno odvisnega stikalnega elementa 11, katerega drugi pol je preko primarnega navitja 20 transformatorja 18 priklopljen na drugo glavno elektrodo 6 iskrišča 4, katerega pomožna elektroda 7 je preko prvega varistorja 8 povezana s prvo elektrodo 13 asimetričnega tripolnega odvodnika 12, ki je preko tretjega varistorja 10 povezana z njegovo srednjo elektrodo 15, ta je preko sekundarnega navitja 19 transformatorja 18 povezana z drugo glavno elektrodo 6 iskrišča 4, ki je povezana z drugo elektrodo 14 asimetričnega tripolnega odvodnika 12, pri tem je termični odklopnik 21 povezan s toplotno vezavo 22 z drugim varistorjem 9,hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku 12 takšna, da je statična vžigna napetost Ul med drugo elektrodo 14 in srednjo elektrodo 15 večja kot statična vžigna napetost U2 med srednjo elektrodo 15 in prvo elektrodo 13.For the next possible circuit of an overvoltage protection circuit 1 with an asymmetric element according to Figure 5, intended to activate the spark gap 4 in the symmetrical or asymmetric arrangement of the first main electrode 5 connected to the first input terminal 2, the second main electrodes 6 connected to the second input terminal 3, and the auxiliary electrode 7, characterized in that the first main electrode 5 of the spark gap 4 is connected via a thermal circuit breaker 21 and then via a parallel combination of the second varistor 9 and the first capacitor 16 to one pole of a voltage-dependent switching element 11, the second pole of which is via the primary the winding 20 of the transformer 18 is connected to the second main electrode 6 of the spark gap 4, whose auxiliary electrode 7 is connected via the first varistor 8 to the first electrode 13 of the asymmetric three-pole arrestor 12, which is connected to its middle electrode 15 via the third varistor 10, which is via the secondary winding 19 of the transformer 18 connected to the second main electrode 6 spark 4, which is connected to the second electrode 14 of the asymmetric three-pole arrester 12, wherein the thermal circuit breaker 21 is connected by thermal coupling 22 to another varistor 9, and at the same time the voltage ratios on the asymmetric three-pole arrester 12 are such that the static ignition voltage Ul is between the second electrode 14 and the middle electrode 15 are greater than the static ignition voltage U2 between the middle electrode 15 and the first electrode 13.
Za modificiran predhodni sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom, glede na sliko 6, je značilno, da je med vozlišče, ki povezuje napetostno odvisni stikalni element 11 z drugim varistorjem 9 in prvim kondenzatorjem 16, in med drugo glavno elektrodo 6 iskrišča 4, vstavljen drugi kondenzator 17.The modified pre-circuit of the overvoltage protection circuit 1 with the asymmetric element, according to Figure 6, is characterized in that between the node connecting the voltage-dependent switching element 11 with the second varistor 9 and the first capacitor 16, and between the second main electrode 6 of the spark gap 4 , a second capacitor 17 is inserted.
Za zadnji sklop vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom glede na sliko 7, namenjen aktivaciji iskrišča 4 v simetrični ali asimetrični razporeditvi prve glavne elektrode 5, povezane s prvo vhodno sponko 2, druge glavne elektrode 6, povezane z drugo vhodno sponko 3, in pomožne elektrode 7, je značilno, da je prva glavna elektroda 5 iskrišča 4, priklopljena preko termičnega odklopnika 21 in drugega varistorja 9 na en pol napetostno odvisnega stikalnega elementa 11, katerega drugi pol je preko primarnega navitja 20 transformatorja 18 priklopljen na drugo glavno elektrodo 6 iskrišča 4, katerega pomožna elektroda 7 je preko prvega varistorja 8 povezana s prvo elektrodo 13 asimetričnega tripolnega odvodnika 12, ki je preko tretjega varistorja 10 povezan z njegovo srednjo elektrodo 15, ta je preko sekundarnega navitja 19 transformatorja 18 povezana z drugo glavno elektrodo 6 iskrišča 4, ki je povezana z drugo elektrodo 14 asimetričnega tripolnega odvodnika 12, pri čemer je na vozlišče, ki povezuje termični odklopnik 21 z drugim varistorjem 9 z enim koncem priključena zaporedna kombinacija rezistorja 23 in prvega kondenzatorja 16, z drugim koncem povezana z drugo glavno elektrodo 6 iskrišča 4, pri tem je termični odklopnik 21 povezan s toplotno vezavo 22 z drugim varistorjem 9, hkrati pa so napetostna razmerja na asimetričnem tripolnem odvodniku 12 takšna, daje statična vžigna napetost Ul med drugo elektrodo 14 in srednjo elektrodo 15 večja kot statična vžigna napetost U2 med srednjo elektrodo 15 in prvo elektrodo 13.For the last circuit of the overvoltage protection circuit 1 with an asymmetric element according to Figure 7, intended to activate the spark gap 4 in the symmetrical or asymmetric arrangement of the first main electrode 5 connected to the first input terminal 2, the second main electrodes 6 connected to the second input terminal 3, and auxiliary electrode 7, characterized in that the first main electrode 5 of the spark gap 4 is connected via a thermal circuit breaker 21 and the second varistor 9 to one pole of the voltage-dependent switching element 11, the second pole of which is connected to the second main electrode 6 via the primary winding 20 of the transformer 18 a spark gap 4 whose auxiliary electrode 7 is connected to the first electrode 13 of the asymmetric tripolar arrestor 12 via the first varistor 8, which is connected to its middle electrode via the third varistor 10, which is connected to the second main spark electrode 6 via the secondary winding 19 of the transformer 18. 4, which is connected to the second electrode 14 of the asymmetric three-pole screw 12, wherein a series of resistors 23 and a first capacitor 16 is connected to the node connecting the thermal circuit breaker 21 to the second varistor 9 with one end connected to the second main electrode 6 of the spark 4 with the thermal circuit breaker 21 connected by thermal bonding 22 with the second varistor 9, and at the same time the voltage ratios on the asymmetric tripolar arrester 12 are such that the static ignition voltage Ul between the second electrode 14 and the middle electrode 15 is greater than the static ignition voltage U2 between the middle electrode 15 and the first electrode 13.
V sklopih vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom glede na slike 5, ali 6, ali 7, kjer se pojavlja napetostno odvisni stikalni element 11, tega prednostno tvori dvopolni odvodnik ali dvopolno elektronsko vezje na osnovi močnostnih stikalnih polprevodnikov.In the circuits of the ignition circuit 1 of the overvoltage protection with the asymmetric element according to Figures 5, or 6, or 7, where a voltage-dependent switching element 11 occurs, this is preferably formed by a two-pole arrestor or a two-pole electronic circuit based on power switching semiconductors.
V primeru zaporedno priključenih elementov vezja, kot sta npr. na sliki 4 ali 7, rezistor 23 in prvi kondenzator 16, ali na sliki 7 drugi varistor 9, napetostno odvisni stikalni element 11 in primarno navitje 20 transformatorja 18, bo funkcionalnost sklopa vžignega vezja 1 ohranjena tudi pri drugem vrstnem redu zaporedno priključenih elementov vezja.In the case of sequentially connected circuit elements, such as. in Fig. 4 or 7, resistor 23 and first capacitor 16, or in Fig. 7 second varistor 9, voltage-dependent switching element 11 and primary winding 20 of transformer 18, the functionality of the ignition circuit assembly 1 will be preserved even in the second order of the connected circuit elements in series.
Slika 8 prikazuje napetostna razmerja na asimetričnem tripolnem odvodniku 12, pri čemer mora biti pogoj, da je statična vžigna napetost Ul med drugo elektrodo 14 in srednjo elektrodo 15 večja kot statična vžigna napetost U2 med srednjo elektrodo 15 in prvo elektrodo 13, izpolnjen za vse sklope vžignega vezja 1 prenapetostne zaščite z asimetričnim elementom, realiziranim z asimetričnim tripolnim odvodnikom 12.Figure 8 shows the voltage ratios at the asymmetric tripolar arrester 12, and the condition that the static ignition voltage Ul between the second electrode 14 and the middle electrode 15 must be greater than the static ignition voltage U2 between the middle electrode 15 and the first electrode 13 must be satisfied for all assemblies of the ignition circuit 1 of the overvoltage protection with an asymmetric element realized with an asymmetric triple arrester 12.
Uporabnost v industrijiApplicability in industry
Sklop vžignega vezja prenapetostne zaščite z asimetričnim elementom v skladu s to tehnično rešitvijo je uporaben povsod, kjer napravam, priklopljenim na razdelilno omrežje, grozi prenapetost, zlasti kot posledica delovanja toka strele. V primerjavi z znanimi sklopi izkazuje izboljšano vžigno sposobnost, ki temelji na krajšem času, potrebnem za vžig iskrišča in hkrati znižuje tveganje uničenja sekundarnega navitja transformatorja zaradi toplotne preobremenitve in tako preprečuje nadaljnjo škodo, povzročeno zaradi poškodovanja celome prenapetostne zaščite.An overvoltage protection ignition circuit assembly with an asymmetrical element according to this technical solution is useful where devices connected to the distribution network are threatened by overvoltage, especially as a result of the lightning current. Compared to known assemblies, it exhibits improved ignition capability based on the shorter time required to ignite the spark and at the same time reduce the risk of destruction of the secondary winding of the transformer due to thermal overload, thus preventing further damage caused by damage to the entire overvoltage protection.
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|---|---|---|---|---|
| US4683514A (en) | 1984-10-03 | 1987-07-28 | The M-O Valve Company Limited | Surge voltage protective circuit arrangements |
| DE19803636A1 (en) | 1998-02-02 | 1999-08-05 | Phoenix Contact Gmbh & Co | Surge protection system |
| DE19914313B4 (en) | 1999-03-01 | 2005-08-18 | Phoenix Contact Gmbh & Co. Kg | Overvoltage protection system |
| DE20020771U1 (en) | 2000-02-22 | 2001-02-15 | Dehn & Soehne | Pressure proof encapsulated spark gap arrangement for leading off damaging disturbance variables due to overvoltages, has two opposing electrodes |
| FR2902579B1 (en) | 2006-06-19 | 2008-10-03 | Soule Prot Surtensions Sa | OVERVOLTAGE PROTECTION DEVICE ASSOCIATED IN SERIES WITH MULTIPLE SIMULTANEOUS ACTUATION LATHERS AND METHODS RELATING THERETO |
| CZ25171U1 (en) | 2012-08-28 | 2013-04-04 | Saltek S.R.O. | Circuit arrangement of over-voltage protection firing circuit |
-
2014
- 2014-01-03 CZ CZ2014-29040U patent/CZ26520U1/en not_active IP Right Cessation
- 2014-08-06 SI SI201400282A patent/SI24618A2/en active IP Right Grant
- 2014-08-08 SK SK50102-2014U patent/SK7210Y1/en unknown
- 2014-09-10 DE DE201420104281 patent/DE202014104281U1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202014104281U1 (en) | 2014-09-19 |
| CZ26520U1 (en) | 2014-02-24 |
| SK7210Y1 (en) | 2015-08-04 |
| SK501022014U1 (en) | 2015-03-03 |
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| Date | Code | Title | Description |
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| OO00 | Grant of patent |
Effective date: 20150824 |