DE508066C - Device for switching large switching capacities through parallel self-switches - Google Patents
Device for switching large switching capacities through parallel self-switchesInfo
- Publication number
- DE508066C DE508066C DES77031D DES0077031D DE508066C DE 508066 C DE508066 C DE 508066C DE S77031 D DES77031 D DE S77031D DE S0077031 D DES0077031 D DE S0077031D DE 508066 C DE508066 C DE 508066C
- Authority
- DE
- Germany
- Prior art keywords
- switching
- switches
- another
- switch
- capacities
- 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
- 238000009826 distribution Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 1
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
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
Es ist bekannt, zum Schalten großer Ströme zwei und mehrere selbsttätige Schalter einander parallel zu legen, um vorhandene kleinere Schaltermodelle verwenden zu können oder mit Schaltern, z.B. Schnellschaltern, deren Bau für hohe Stromstärken schwierig ist, die Schaltung überhaupt zu ermöglichen. Bei einer solchen Anlage verteilen sich aber die Ströme unter Umständen ungleichmäßig.It is known to switch large currents two or more automatic switches parallel to each other in order to be able to use existing smaller switch models or with switches, e.g. high-speed switches, which are difficult to build for high currents is to enable the circuit at all. In such a system, however, are distributed the currents may be uneven.
ίο Diese Ungleichmäßigkeit kann sowohl im eingeschalteten Zustand auftreten, weil die Kontaktübergangswiderstände und die induktiven Widerstände der beiden Zweige ungleich sein können. Sie kann aber auch während des Öffnens auftreten, weil die Lichtbogenwiderstände verschieden sind. In beiden Fällen führt die ungleichmäßige Verteilung der Stromstärke dazu, daß die Schalter nicht zu gleicher Zeit ansprechen, sondern der mit der höheren Stromstärke zuerst. Infolgedessen wird dieser Schalter überlastet und die Auslösezeit der Gruppe erhöht.ίο This unevenness can occur both when the power is on, because the Contact resistance and the inductive resistances of the two branches can be unequal. But it can also occur during opening because the arc resistances are different. In In both cases, the uneven distribution of the current strength means that the switches do not respond at the same time, but the one with the higher amperage first. As a result, this switch becomes overloaded and the trigger time of the group increased.
Dieser Nachteil wird nach der Erfindung dadurch vermieden, daß die Auslösespulen durch eine Ausgleichsleitung miteinander verbunden werden und die Zweige der Ausschaltkontakte, wie es an und für sich für andere Zwecke schon bekannt ist, transformatorisch miteinander verkettet werden. Durch die Ausgleichsleitung wird erreicht, daß die Stromverteilung in den Spulen den Stromstärken der Schalter entsprechen, während die transformatorische Verkettung der Zweige der Ausschaltkontakte eine gleichmäßige Verteilung des Kurzschlußstromes und des Lichtbogenstromes erzwingt, solange diese sich ändern. Bei geringeren Ansprüchen kann man die eine oder andere der beiden Maßnahmen weglassen. Durch Veränderung der Ohmschen und induktiven Widerstände der Stromzweige kann man schließlich die Stromstärken noch genau abgleichen.This disadvantage is avoided according to the invention in that the release coils are connected to each other by a compensating line and the branches of the switch-off contacts, as it is already known in and of itself for other purposes, can be linked with one another in a transformational manner. The compensation line ensures that the current distribution in the coils Current intensities of the switch correspond, while the transformer concatenation of the Branches of the switch-off contacts enforce a uniform distribution of the short-circuit current and the arc current as long as these change. For lower demands, you can choose one or the other of the two Omit measures. By changing the ohmic and inductive resistances of the current branches one can finally get the Adjust current intensities exactly.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung veranschaulicht. Diese zeigt zwei parallel zueinander liegende Selbstschalter mit den Schaltkontakten S1 und S2 und den Auslösespulen W1 und w„. Die Auslösespulen sind durch die Ausgleichsleitung a miteinander verbunden. Außerdem sind die Schalterzweige durch den Transformator t miteinander verkettet. Unter Umständen kann man den Transformator t oder aber auch die Ausgleichsleitung α weglassen. Die Selbstschalter können sowohl für gleiche als auch für ungleiche Nennstromstärken bemessen sein.An embodiment of the invention is illustrated in the drawing. This shows two self-switches lying parallel to one another with the switching contacts S 1 and S 2 and the trip coils W 1 and W ". The trip coils are connected to one another by the compensation line a. In addition, the switch branches are linked to one another by the transformer t. Under certain circumstances, the transformer t or the compensating line α can be omitted. The circuit breakers can be dimensioned for the same as well as for unequal nominal currents.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES77031D DE508066C (en) | Device for switching large switching capacities through parallel self-switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES77031D DE508066C (en) | Device for switching large switching capacities through parallel self-switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE508066C true DE508066C (en) | 1930-09-24 |
Family
ID=7506544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES77031D Expired DE508066C (en) | Device for switching large switching capacities through parallel self-switches |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE508066C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117094A1 (en) * | 1983-02-18 | 1984-08-29 | Heinemann Electric Company | A circuit breaker comprising parallel connected sections |
| EP0670585A3 (en) * | 1994-03-01 | 1997-10-29 | Kopp Heinrich Ag | Power circuit breaker. |
-
0
- DE DES77031D patent/DE508066C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117094A1 (en) * | 1983-02-18 | 1984-08-29 | Heinemann Electric Company | A circuit breaker comprising parallel connected sections |
| EP0670585A3 (en) * | 1994-03-01 | 1997-10-29 | Kopp Heinrich Ag | Power circuit breaker. |
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