DE544264C - Arrangement for switching off short-circuit currents occurring in cable lines - Google Patents
Arrangement for switching off short-circuit currents occurring in cable linesInfo
- Publication number
- DE544264C DE544264C DEV22070D DEV0022070D DE544264C DE 544264 C DE544264 C DE 544264C DE V22070 D DEV22070 D DE V22070D DE V0022070 D DEV0022070 D DE V0022070D DE 544264 C DE544264 C DE 544264C
- Authority
- DE
- Germany
- Prior art keywords
- short
- switching
- arrangement
- cable
- circuit
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
Um Kabelleitungen großer Netze, die durch Vergrößerung der Zentralen den Anforderungen der Abschaltung unter Kurzschluß nicht mehr gewachsen sind, zu schützen, wird gemaß der Erfindung einem mit Zeitverzögerung abschaltenden Ölschalter ein verhältnismäßig kleiner, direkt wirkender automatischer Schalter vorgeschaltet, der bei Überstrom einen Widerstand in den Stromkreis einschal-To cable lines of large networks that meet the requirements by enlarging the control panels the disconnection under short circuit are no longer able to protect, is according to of the invention a time delay disconnecting oil switch a relatively small, direct-acting automatic switch connected upstream, the one in the event of overcurrent connect a resistor to the circuit
to tet. Es sind bereits für ähnliche Zwecke Einrichtungen bekannt geworden, bei denen in Reihe mit einem Hauptschalter eine Schmelzsicherung liegt, die durch ihr Schmelzen bei Überstrom einen parallel liegenden Widerstand in den Stromkreis einschaltet. Durch das Schmelzen der Sicherung wird aber die Anlage für eine längere Zeit betriebsunfähig, das vermieden werden muß. Durch die Erfindung wird an Stelle einer Sicherung ein so-kills. There are already facilities for similar purposes known in which in Row with a main switch is a fuse that melts with it Overcurrent switches on a parallel resistor in the circuit. By the melting of the fuse will make the system inoperable for a longer period of time, that must be avoided. With the invention, instead of a fuse, a so-
ao genannter Kurzschließer verwendet, der beim Anwachsen der Stromstärke bei einer bestimmten Höhe anspricht, d. h. durch Öffnen seiner Kontakte einen parallel liegenden Widerstand einschaltet und so lange geöffnet bleibt, bis die Überstromursache geschwunden oder der Stromkreis durch den ölschalter abgeschaltet ist. Nach der Abschaltung wird selbsttätig der Widerstand wieder überbrückt, da der Betätigungsschalter nur wirksam ist, solange er Überstrom führt. Durch diese Anordnung ist es ferner möglich, den Kurzschließer mit verhältnismäßig großem Eisenquerschnitt zu versehen, um so auch auf diese Weise eine Drosselung des Kurzschlußstromes herbeizuführen.ao called short-circuiter used, which when the current strength increases at a certain Height responds, d. H. by opening its contacts, a parallel resistor is switched on and remains open for so long remains until the cause of the overcurrent has disappeared or the circuit through the oil switch is switched off. After the switch-off, the resistance is automatically bridged again, since the actuation switch is only effective as long as it carries overcurrent. Through this arrangement it is also possible to use the short-circuiter with a relatively large iron cross-section to be provided in order to bring about a throttling of the short-circuit current in this way as well.
In der Zeichnung bezeichnet α den eigentlichen Kabelschalter, der unter der Einwirkung einer mit entsprechender Verzögerung versehenen Überstromaüslösung b steht, c ist der Kurzschließer mit seinem ohne Verzögerung arbeitenden Überstromrelais d. e ist der Ohmsche Widerstand, der bei Ansprechen von d und dadurch bewirktem Abschalten von c dem Kabelschalter α einen entsprechenden Widerstand vorschaltet und so die Kurz-Schlußleistung für den Kabelschalter α beschränkt. In the drawing, α denotes the actual cable switch, which is under the influence of an overcurrent control solution b provided with a corresponding delay, c is the short-circuiter with its overcurrent relay d, which works without delay. e is the ohmic resistance which, when d responds and c is switched off as a result, connects a corresponding resistor upstream of the cable switch α and thus limits the short-circuit power for the cable switch α .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV22070D DE544264C (en) | Arrangement for switching off short-circuit currents occurring in cable lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV22070D DE544264C (en) | Arrangement for switching off short-circuit currents occurring in cable lines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE544264C true DE544264C (en) | 1932-02-16 |
Family
ID=7579605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV22070D Expired DE544264C (en) | Arrangement for switching off short-circuit currents occurring in cable lines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE544264C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1207470B (en) * | 1961-05-19 | 1965-12-23 | Bbc Brown Boveri & Cie | Electrical switchgear for high currents |
-
0
- DE DEV22070D patent/DE544264C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1207470B (en) * | 1961-05-19 | 1965-12-23 | Bbc Brown Boveri & Cie | Electrical switchgear for high currents |
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