DE545971C - Arrangement for preventing the switching off of switches with lower power, which are preceded by a switch with higher power - Google Patents
Arrangement for preventing the switching off of switches with lower power, which are preceded by a switch with higher powerInfo
- Publication number
- DE545971C DE545971C DEV21362D DEV0021362D DE545971C DE 545971 C DE545971 C DE 545971C DE V21362 D DEV21362 D DE V21362D DE V0021362 D DEV0021362 D DE V0021362D DE 545971 C DE545971 C DE 545971C
- Authority
- DE
- Germany
- Prior art keywords
- current
- switch
- coil
- switches
- switched
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Relay Circuits (AREA)
- Breakers (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
AUSGEGEBEN AM
8. MÄRZ 1932ISSUED ON
MARCH 8, 1932
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
Vi 545971 KLASSE 21 c GRUPPEVi 545971 CLASS 21c GROUP
Voigt & Haeffner A.-G. in Frankfurt a. M.*)Voigt & Haeffner A.-G. in Frankfurt a. M. *)
Für den Einbau von Schaltern in Netzen mit großer Kurzschlußleistung ergibt sich die Notwendigkeit, alle Schalter für die größte Kurzschlußleistung auszuführen, auch wenn einer Anzahl kleinerer Schalter in einer Verteilungsstation usw. ein Hauptschalter vorgeschaltet ist. Um nun die eigentlichen Abzweigschalter für eine geringere Leistung ausführen zu können, muß man eine Einrichtung treffen, nach der bei Ansteigen der Stromstärke über eine gewisse Höhe das Abschalten der Abzweigschalter verhindert wird, der Hauptschalter zum Auslösen kommt und so die Kurzschlußstelle abschaltet. Eine neue Lösung dieser Aufgabe ist die folgende: Auf einen Magneten sind eine Spannungs- und eine Stromspule aufgebracht, die in ihrer Wirkung entgegengesetzt arbeiten. Bei normalem Strom und normaler Spannung überwiegt die Spannungsspule in großem Maße die Stromspule, so daß der Anker des Magneten angezogen bleibt. Nimmt durch Ansteigen des Stromes über das Normale die Stromstärke zu, so kommt ein Augenblick, in dem sich Strom und Spannungsspule in ihrer Wirkung die Waage halten, d. h. der magnetische Kraftlinienfluß im Magneten verschwindet, und sein Anker fällt ab, wodurch dann die Auslösung des betreffenden Schalters bei einer gewissen Stromstärke bewirkt wird. Tritt aber Kurzschluß ein, so wächst die Stromstärke in der Stromspule dermaßen rasch und so groß an, daß nunmehr der durch die Stromspule bewirkte magnetische Fluß den Anker festhält und somit ein Abschalten des betreffenden, zu schützenden Schalters nicht eintreten kann, sondern der Hauptschalter, der mit normalen Auslösemagneten o. dgl. versehen ist, die Abschaltung bewirkt. Versieht man den Anker mit einer einstellbaren Gegenfeder, so kann man durch die Einstellung der letzteren erreichen, daß die Abschaltung bei einer Stromstärke erfolgt, die in einem bestimmten Verhältnis zu der normalen liegt.For the installation of switches in networks with high short-circuit power, the Need to design all switches for the greatest short circuit capacity, even if a number of smaller switches in a distribution station, etc. is preceded by a main switch is. In order to be able to carry out the actual branch switch for a lower output, one must have a device meet, after which the switch-off when the current strength rises above a certain level the branch switch is prevented, the main switch triggers and thus switches off the short-circuit point. A new The solution to this problem is the following: On a magnet are a voltage and a current coil applied, which work in opposition in their effect. With normal Current and normal voltage, the voltage coil outweighs the current coil to a large extent, so that the armature of the Magnet remains attracted. When the current rises above normal, it decreases Current intensity increases, so there comes a moment in which the current and voltage coil are in balance their effect, d. H. the magnetic flux of lines of force in the magnet disappears, and its anchor drops, which then triggers the relevant Switch is effected at a certain amperage. But if a short circuit occurs, so the current strength in the current coil grows so rapidly and so large that now the magnetic flux caused by the current coil holds the armature and thus a Switching off the relevant switch to be protected cannot occur, but the Main switch, which is provided with normal tripping magnets or the like, the shutdown causes. If you provide the armature with an adjustable return spring, you can go through the setting of the latter achieve that the shutdown takes place at a current strength, which is in a certain proportion to the normal.
Eine der möglichen Ausführungsformen ist in der Zeichnung dargestellt, wobei angenommen wird, daß die Abschaltung der Verteilungsstromkreise durch einfache Schützen erfolgt. Es bezeichnet α den vorgeschalteten Hauptschalter, b den Schütz mit seiner Einschaltspule c. d ist ein Druckknopf für das Einschalten, e ist der Magnet mit seinem Anker / und der Gegenfeder g. h ist die Spannungsspule, i die Stromspule des Magneten e. Durch Betätigung von d erhält die Spule c des Schützen b Strom und schließt sich. Dadurch wird der Anker f des Magneten e angezogen und schließt einen Haltekontakt k für den Schütz b. Bei normalemOne of the possible embodiments is shown in the drawing, it being assumed that the disconnection of the distribution circuits is carried out by simple contactors. It denotes α the upstream main switch, b the contactor with its closing coil c. d is a push button for switching on, e is the magnet with its armature / and the counter spring g. h is the voltage coil, i is the current coil of the magnet e. By pressing d , coil c of contactor b receives current and closes. As a result, the armature f of the magnet e is attracted and closes a holding contact k for the contactor b. With normal
*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:
Cesare Cippitelli in Frankfurt a. M.Cesare Cippitelli in Frankfurt a. M.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV21362D DE545971C (en) | 1926-06-20 | 1926-06-20 | Arrangement for preventing the switching off of switches with lower power, which are preceded by a switch with higher power |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV21362D DE545971C (en) | 1926-06-20 | 1926-06-20 | Arrangement for preventing the switching off of switches with lower power, which are preceded by a switch with higher power |
Publications (1)
Publication Number | Publication Date |
---|---|
DE545971C true DE545971C (en) | 1932-03-08 |
Family
ID=7579126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV21362D Expired DE545971C (en) | 1926-06-20 | 1926-06-20 | Arrangement for preventing the switching off of switches with lower power, which are preceded by a switch with higher power |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE545971C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE739503C (en) * | 1940-04-17 | 1943-09-28 | Aeg | Circuit-breakers in series with a fuse |
DE1004271B (en) * | 1954-07-29 | 1957-03-14 | Licentia Gmbh | Arrangement of circuit breakers in low-voltage networks |
DE1105967B (en) * | 1957-12-21 | 1961-05-04 | Bbc Brown Boveri & Cie | Electrical high-voltage circuit breaker with switching contacts arranged in extinguishing chambers |
DE1181775B (en) * | 1961-11-11 | 1964-11-19 | Gerhard Walter Seulen Dr Ing | Device for switching off loads connected to alternating current, preferably at a higher frequency |
-
1926
- 1926-06-20 DE DEV21362D patent/DE545971C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE739503C (en) * | 1940-04-17 | 1943-09-28 | Aeg | Circuit-breakers in series with a fuse |
DE1004271B (en) * | 1954-07-29 | 1957-03-14 | Licentia Gmbh | Arrangement of circuit breakers in low-voltage networks |
DE1105967B (en) * | 1957-12-21 | 1961-05-04 | Bbc Brown Boveri & Cie | Electrical high-voltage circuit breaker with switching contacts arranged in extinguishing chambers |
DE1181775B (en) * | 1961-11-11 | 1964-11-19 | Gerhard Walter Seulen Dr Ing | Device for switching off loads connected to alternating current, preferably at a higher frequency |
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