CS205922B1 - Current relay for the tyristor vonvertor - Google Patents
Current relay for the tyristor vonvertor Download PDFInfo
- Publication number
- CS205922B1 CS205922B1 CS307579A CS307579A CS205922B1 CS 205922 B1 CS205922 B1 CS 205922B1 CS 307579 A CS307579 A CS 307579A CS 307579 A CS307579 A CS 307579A CS 205922 B1 CS205922 B1 CS 205922B1
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- CS
- Czechoslovakia
- Prior art keywords
- current
- relay
- current relay
- vonvertor
- tyristor
- Prior art date
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- Relay Circuits (AREA)
Description
Vynález sa týká prúdového relé pre tyristorový měnič, určeného na istenie proti nadprúdu.The present invention relates to a current relay for a thyristor converter for overcurrent protection.
Dosia! známe prúdové relé na kontaktnom principe využívajú pfisobenie elektromagnetu na kotvičku, ovládájúcu mechanicky rozpojitelhé kontakty. Bezkontaktně prúdové relé využívajú úbytok napStia na bočníku alebo merací transformátor, ktorého signál spracovávajú zložitých elektronických obvodoch a privádzajú ho na výkonový kontaktný alebo bezkontaktný spínač. Tieto zariadenia sú komplikovaná a málo spoTahlivé.Dosia! known current relays based on the contact principle utilize the application of an electromagnet to the armature controlling the mechanically disconnectable contacts. The non-contact current relay uses a voltage drop on the shunt or a measuring transformer whose signal is processed by complex electronic circuits and fed to a power contact or contactless switch. These devices are complicated and unreliable.
Uvedené nedostatky odstraňuje prúdové relé podlá vynálezu, ktorého podstatou je jazýčkové relé ovinuté prúdovou cievkou a umiestnené v blízkosti permanentného magnetu. Vzájomné vzdialenosť jazýčkového relé a permanentného magnetu mdže byť nastavitelná pomocou nasťavovacieho prvku spojeného mechanicky s permanentným magnetom alebo cievkou.These drawbacks are overcome by the current relay of the present invention, which is based on a reed wound with a current coil and located near a permanent magnet. The distance between the reed relay and the permanent magnet can be adjustable by means of a fusing element mechanically connected to the permanent magnet or coil.
Použitím jazýčkového relé s cievkou a permanentným magnetom sa dosiahne velini přesná a Tahko nastavitelné pfisobenie prúdového relé. Jazýčkové relé pfisóbí velini rýchlo, aj pri krátkodobom nadprúde spoTahJivo zapfisobí. Prúdové relé podl’a vynálezu je velini jednoduché a lačné, mfiže byť zaliate do kompaktného celku a teda odolné voči nepriaznivému prostrediu.The use of a reed relay with a coil and a permanent magnet achieves a very precise and easily adjustable adjustment of the current relay. The reed relay will quickly and reliably operate, even with a short-term overcurrent. The current relay according to the invention is largely simple and greedy, can be cast into a compact unit and thus resistant to harsh environments.
Na priloženom výkrese je znázorněný příklad usporiadania prúdového relé spolu so schématickým zapojením výkonového i riadiaceho obvodu tyristorového meniča. Jazýčkové relé _1_ ovinuté cievkou 2 je uložené v blízkosti permanentného magnetu J .The attached drawing shows an example of an arrangement of a current relay together with a schematic connection of the power and control circuit of a thyristor converter. The reed 1 wrapped in the coil 2 is located near the permanent magnet 1.
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Cievka 2. je zapojené do výkonového obvodu měnič» 2, jazýčkové relé jé zapojené do Jeho riadiaceho obvodu.The coil 2 is connected to the power circuit of the converter 2, the reed relay is connected to its control circuit.
PČsobenie tohoto prúdového relé spočívá v tom, že pokieT cievkou 2 netečie žiadny prúd, alebo tečie ňou prúd menší ako dovolený, pdsobí pole permanentního magnetu j na železné pierka jazýčkového relé J tak, Se sú spojené a držia v zapnutom stave riadiace ,obvody 4 tyristorového meniča J dodávajúceho prúd do záťaže 6. Magnetické pole cievky pretekanej jednosměrným prúdom I, je orientované proti poTu permanentného magnetu J , takže ak prúd překročí nastavenú dovolenú hodnotu, výsledné magnetické pole sa zoslebí natoTko, že pierka jazýčkového relé 2 sa rozpoja a tým sa rozpoja aj riadiace obvody tyristorového meniča 5.The effect of this current relay is that if there is no current flowing through the coil 2, or a current flowing less than the permissible current, the permanent magnet field j acts on the iron feathers of the reed relay J so that the control circuits 4 of the thyristor are connected. The magnetic field of the coil flowing through the unidirectional current I is oriented against the number of the permanent magnet J, so that if the current exceeds the set allowable value, the resulting magnetic field is amplified so that the tongue relay 2 opens. also thyristor converter control circuits 5.
Vynález je určený najmá na nadprúdové istenie tyristorových usmerňovačov a iných ma· ničov, dó sa však využiť a...o prúdové relé: v každom případe, kde pri zvýšení prúdu nad do· volenú hodnotu třeba prerušiť určitý elektrický obvod.The invention is intended, in particular, for overcurrent protection of thyristor rectifiers and other transducers, but can be used with a current relay: in any case where an electrical circuit has to be interrupted when the current rises above the selected value.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS307579A CS205922B1 (en) | 1979-05-04 | 1979-05-04 | Current relay for the tyristor vonvertor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS307579A CS205922B1 (en) | 1979-05-04 | 1979-05-04 | Current relay for the tyristor vonvertor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS205922B1 true CS205922B1 (en) | 1981-05-29 |
Family
ID=5369770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS307579A CS205922B1 (en) | 1979-05-04 | 1979-05-04 | Current relay for the tyristor vonvertor |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS205922B1 (en) |
-
1979
- 1979-05-04 CS CS307579A patent/CS205922B1/en unknown
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