EP0893806A2 - Stromwandleranordnung mit einer Nebenstrombahn sowie deren Verwendung - Google Patents
Stromwandleranordnung mit einer Nebenstrombahn sowie deren Verwendung Download PDFInfo
- Publication number
- EP0893806A2 EP0893806A2 EP98250262A EP98250262A EP0893806A2 EP 0893806 A2 EP0893806 A2 EP 0893806A2 EP 98250262 A EP98250262 A EP 98250262A EP 98250262 A EP98250262 A EP 98250262A EP 0893806 A2 EP0893806 A2 EP 0893806A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- current transformer
- conductor
- main
- circuit breaker
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Definitions
- the invention relates to a current transformer arrangement with a a current transformer penetrating primary conductor, which as a component a secondary flow path of a main current conductor is.
- a current transformer arrangement of this type is e.g. through the US 5,223,790.
- the main current path is included with the insertion of a conductive block and one of them outgoing bypass flow interrupted.
- the branch line serves as the primary conductor of an inductive current transformer.
- the invention is based on the object a current transformer arrangement suitable for low-voltage circuit breakers using a bypass path and while maintaining the previous straight connection rails create.
- the invention ensures that the previously used and inexpensive to produce connecting rails with rectangular cross section can be used and only to be provided with two attachment points for the bypass are. Simple features such as through holes or screw holes are sufficient for this.
- Alignment of the central part of the primary conductor transverse to the direction the current in the connection rail is so extensive Insensitivity to the magnetic field of the connection rail achieves a reliable function of the current transformer arrangement is guaranteed in the entire measuring range, as in Operation of a low-voltage circuit breaker occurs.
- bypass path can be made from one Flat material exist, the foot parts by cranking of the flat material are formed.
- the current transformer arrangement is according to the invention usable for alternating current as well as for direct current, since it obviously only depends on the appropriate one Arrange current transformers on the primary conductor.
- the use is therefore part of the invention a current transformer arrangement of the type specified in the Version with a compensation converter for a DC circuit breaker.
- the advantage is an essential one Space saving, as it was previously because of the large construction volume special DC converter, e.g. H. based on Hall elements, this current transformer was required outside the actual circuit breaker in the associated To accommodate switchgear.
- the invention allows DC circuit breaker under extensive Using the main components of AC circuit breakers a standard design because the current transformer arrangement according to the invention in the for conventional inductive Current transformers provided in the switch housing Assembly room is easy to accommodate.
- Figure 1 shows a current transformer arrangement in connection with a connecting rail of a low-voltage circuit breaker in a schematic perspective representation.
- Figures 2 and 3 illustrate embodiments of Connections of a branch line to a main conductor.
- Figure 4 is schematically simplified one for direct current Low-voltage circuit breaker provided with a Current transformer arrangement shown according to the invention.
- the current transformer arrangement 1 has one Main conductor 2 on the by a common rail a low-voltage circuit breaker 3 ( Figure 4) is formed is.
- the main current conductor 2 accordingly has a rectangular cross-sectional shape with two opposite Narrow sides 4 and also opposite one another Broad sides 4.
- On one of the broad sides 5 of the main current conductor 2 is a branch circuit 6 attached to the primary conductor a current transformer 7 forms.
- the current transformer 7 is a current transformer unit working according to the compensation principle, as for example in DE 37 41 028 A1, DE 38 35 100 A1, DE 38 35 101 A1 or DE 41 30 999 is.
- the secondary current path 6 has as the primary conductor of the current transformer 7 a middle part 10, which extends transversely to the one Arrow marked flow direction 11 of the current in the main conductor 2 extends. From the middle part 10 go angled Connecting legs 12 and 13 made with a foot part 14 are provided. Fasteners 15 for mechanical and electrical connection of the branch circuit 6 with the main conductor 2 are to simplify the illustration indicated by its center line, as for the purposes of the invention different fasteners, such as screws, Rivets or the like can be used. Likewise through its center line a connection element 16 is indicated, which for Connection of the middle part 10 to the connecting leg 12 is provided.
- the further connecting leg 13 and that Middle part 10 are shown in one piece in the figure, can however divided in the same way and by a corresponding one Connection means 16 may be connected.
- a subdivision the secondary flow path 6 is in at least two assemblies expedient to the assembly of the current transformer 7 on the middle part 10 to facilitate.
- the foot parts 14 and 20 require the support surfaces 17 provided in itself no special configuration, but can formed by the normal surface of the main conductor 2 be. This is especially the case if the main current conductor 2 one for safe contact with the named Suitable parts of the foot, e.g. H. the usual silver plating, having.
- the foot part 14 is formed in one piece with the connecting leg 12 is a composite design according to of Figure 3 can be selected.
- the connecting leg ends here 12 without bending and rests on a separate one Foot part 20 that as a sleeve, socket or columnar spacer can be trained.
- FIG. 2 shows the base part 14 and the main current conductor 2 penetrating rivet
- Figure 3 one in a blind hole screwed screw shows.
- the rivet connection 3 also in the arrangement according to FIG Figure 3 are used and vice versa a screw connection in the arrangement according to FIG. 2.
- the DC circuit breaker 3 is using standard components constructed as for AC circuit breakers to be available. This includes in particular a housing 21, switch contact systems 22, associated arc quenching chambers 23, a drive device 24 for actuation the switch contact systems 22 and an electronic trigger 25 to release a latch to separate the To effect switching contacts.
- the electronic trigger 25 is supplied with a current signal from the current transformer 7 is provided on the lower main conductor 2 is arranged. The supply of the current signal is indicated in FIG. 4 by a dash-dotted line 26.
- the current transformer arrangement 1 is in a pocket-like recess 27 used in standard circuit breakers on the back wall to accommodate an inductive Current transformer is present. This placement of the Current transformer arrangement 1 is due to its small dimensions compared to previously for direct current in circuit breakers systems used.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
- der Hauptstromleiter eine rechteckige Querschnittsform mit gegenüberliegenden Schmalseiten und Breitseiten aufweist und durch eine Anschlußschiene eines Niederspannungs-Leistungsschalters gebildet ist,
- daß der Primärleiter einen sich quer zu der Fließrichtung des Stromes im Hauptstromleiter erstreckenden Mittelteil sowie hiervon ausgehende Verbindungsschenkel mit je einem Fußteil aufweist, und
- daß die Fußteile der beiden Verbindungsschenkel an dem Hauptstromleiter mechanisch und elektrisch leitend an Auflageflächen befestigt sind, die an einer der Breitseiten im Abstand voneinander und in der Fließrichtung des Stromes versetzt angeordnet sind.
Claims (4)
- Stromwandleranordnung (1) mit einem einen Stromwandler (7) durchsetzenden Primärleiter, der als Bestandteil einer Nebenstrombahn (6) eines Hauptstromleiters (2) ausgebildet ist,
dadurch gekennzeichnet, daßder Hauptstromleiter (2) eine rechteckige Querschnittsform mit gegenüerliegenden Schmalseiten (4) und Breitseiten (5) aufweist und durch eine Anschlußschiene eines Niederspannungs-Leistungsschalters (2) gebildet ist,daß die Nebenstrombahn (2) als Primärleiter des Stromwandlers (7) einen sich quer zu der Fließrichtung (11) des Stromes im Hauptstromleiter (2) erstreckenden Mittelteil (10) sowie hiervon ausgehende Verbindungsschenkel (12, 13) und je ein den Verbindungsschenkel stützendes Fußteil (14; 15) aufweist, unddaß die Fußteile (14; 15) der beiden Verbindungsschenkel (12, 13) an dem Hauptstromleiter (2) mechanisch und elektrisch leitend an Auflageflächen (17) befestigt sind, die an einer der Breitseiten (5) im Abstand voneinander und in der Fließrichtung (11) des Stromes versetzt angeordnet sind. - Stromwandleranordnung nach Anspruch 1,
dadurch gekennzeichnet, daß
die Nebenstrombahn (6) aus einem Flachmaterial besteht und daß die Fußteile (14) durch Abkropfung des Flachmaterials gebildet sind. - Stromwandleranordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
der Stromwandler (7) eine nach dem Kompensationsprinzip arbeitende Stromwandlereinheit ist. - Verwendung einer Stromwandleranordnung nach Anspruch 3 bei einem Leistungsschalter in einem Gleichstromnetz.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19731813 | 1997-07-21 | ||
DE1997131813 DE19731813A1 (de) | 1997-07-21 | 1997-07-21 | Stromwandleranordnung mit einer Nebenstrombahn sowie deren Verwendung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0893806A2 true EP0893806A2 (de) | 1999-01-27 |
EP0893806A3 EP0893806A3 (de) | 2000-04-12 |
Family
ID=7836743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98250262A Withdrawn EP0893806A3 (de) | 1997-07-21 | 1998-07-20 | Stromwandleranordnung mit einer Nebenstrombahn sowie deren Verwendung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0893806A3 (de) |
DE (1) | DE19731813A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002033424A2 (de) * | 2000-10-16 | 2002-04-25 | Vacuumschmelze Gmbh & Co. Kg | Anordnung zur potentialfreien messung hoher ströme |
CN109581026A (zh) * | 2017-09-25 | 2019-04-05 | 矢崎总业株式会社 | 电流传感器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04116909A (ja) * | 1990-09-07 | 1992-04-17 | Mitsubishi Electric Corp | 過渡電流検出装置 |
US5107204A (en) * | 1986-12-22 | 1992-04-21 | General Electric Company | Low temperature coefficient shunt for current measurement |
US5583732A (en) * | 1994-12-19 | 1996-12-10 | General Electric Company | Modular current transformer for electronic circuit interrupters |
-
1997
- 1997-07-21 DE DE1997131813 patent/DE19731813A1/de not_active Withdrawn
-
1998
- 1998-07-20 EP EP98250262A patent/EP0893806A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5107204A (en) * | 1986-12-22 | 1992-04-21 | General Electric Company | Low temperature coefficient shunt for current measurement |
JPH04116909A (ja) * | 1990-09-07 | 1992-04-17 | Mitsubishi Electric Corp | 過渡電流検出装置 |
US5583732A (en) * | 1994-12-19 | 1996-12-10 | General Electric Company | Modular current transformer for electronic circuit interrupters |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 367 (E-1245), 7. August 1992 (1992-08-07) & JP 04 116909 A (MITSUBISHI ELECTRIC CORP), 17. April 1992 (1992-04-17) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002033424A2 (de) * | 2000-10-16 | 2002-04-25 | Vacuumschmelze Gmbh & Co. Kg | Anordnung zur potentialfreien messung hoher ströme |
WO2002033424A3 (de) * | 2000-10-16 | 2002-11-07 | Vacuumschmelze Gmbh & Co Kg | Anordnung zur potentialfreien messung hoher ströme |
CN109581026A (zh) * | 2017-09-25 | 2019-04-05 | 矢崎总业株式会社 | 电流传感器 |
CN109581026B (zh) * | 2017-09-25 | 2021-03-12 | 矢崎总业株式会社 | 电流传感器 |
Also Published As
Publication number | Publication date |
---|---|
DE19731813A1 (de) | 1999-01-28 |
EP0893806A3 (de) | 2000-04-12 |
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