EP2259284A2 - Electricity converter unit - Google Patents

Electricity converter unit Download PDF

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Publication number
EP2259284A2
EP2259284A2 EP10164150A EP10164150A EP2259284A2 EP 2259284 A2 EP2259284 A2 EP 2259284A2 EP 10164150 A EP10164150 A EP 10164150A EP 10164150 A EP10164150 A EP 10164150A EP 2259284 A2 EP2259284 A2 EP 2259284A2
Authority
EP
European Patent Office
Prior art keywords
current transformer
transformer unit
primary conductor
fuse
unit according
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.)
Granted
Application number
EP10164150A
Other languages
German (de)
French (fr)
Other versions
EP2259284B1 (en
EP2259284A3 (en
Inventor
Daniel Mischon
Stefan Wiget
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EFEN GmbH
Original Assignee
EFEN GmbH
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Filing date
Publication date
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Application filed by EFEN GmbH filed Critical EFEN GmbH
Priority to PL10164150T priority Critical patent/PL2259284T3/en
Publication of EP2259284A2 publication Critical patent/EP2259284A2/en
Publication of EP2259284A3 publication Critical patent/EP2259284A3/en
Application granted granted Critical
Publication of EP2259284B1 publication Critical patent/EP2259284B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0291—Structural association with a current transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus

Definitions

  • the present invention relates to a power converter unit for a fuse load bar and a fuse load bar with such a power converter unit.
  • Fuse-type switch disconnectors usually low-voltage, high-performance (NH) fuse switch disconnectors
  • the devices generally have one or more fuse bases, each having two fuse receptacles and arranged in a housing.
  • Corresponding fuse links are mounted on one or more switch covers, so that with a closed switch cover the fuse links are inserted into the fuse bases and make a connection between the respective - connectable to the busbars - feed contacts and the outgoing contacts. When opening the cover or the cover, the fuse links are pulled out of the fuse bases so that the connection is broken.
  • current transformers are usually used.
  • Current transformers work like transformers, d. H. a through a primary conductor, in the prior art usually the electrical connection between the busbar terminal and a first fuse receptacle or the electrical connection between a second fuse receptacle and the output terminal of the bar, flowing alternating current induced in a provided by the current transformer secondary conductor from the primary circuit galvanically isolated secondary current, the can be measured and evaluated to determine the primary current.
  • the measurement of the current flow takes place without contact via the outlet provided by the fuse load bar.
  • the current transformer is arranged surrounding the connecting line between the busbar terminal and a first fuse holder or a second fuse holder and an outgoing terminal.
  • plug-on current transformers which have a core and a secondary conductor surrounding it.
  • the core is pushed over a current-carrying line and is electrically insulated from this.
  • the AC current through the line induces an alternating magnetic field in the core, which in turn induces current flow in the secondary conductor surrounding the core in a coil shape.
  • plug-on current transformers have thicknesses in the typical sizes which apply considerably and as a rule cause the fuse switch disconnectors in a control cabinet to be higher than the same bars without current transformers.
  • a NH fuse-switch-disconnector in which, if necessary, a current transformer can be threaded with a slot-shaped opening on the Z-shaped feed contact between the electrical busbar terminal and a first fuse holder.
  • the housing bottom In order to enable such threading, however, the housing bottom must be designed to be open, which leads to considerable constructive measures on the housing. In addition, a corresponding contact protection can hardly be guaranteed.
  • a current transformer unit for a fuse load bar with three current transformers for detecting a current flowing through the fuse load bar current, each of the current transformers each having a primary conductor, a ring surrounding the primary conductor core and a coil surrounding the core secondary conductor, wherein each of the ends of the secondary conductor has a measuring terminal, and wherein the primary conductor has a first end connectable to a feeder terminal of the fuse load bar and a second end connectable to a terminal cable.
  • the current transformer unit according to the invention can be mounted on a commercial fuse load bar without having to remove these from the cabinet.
  • the current transformer unit can be connected to the outgoing connections of the fuse load bar.
  • the fuse load bar must have no special design features for receiving the current transformer element according to the invention at its output range, which deviate from the commercial strips.
  • the current transformer unit according to the invention by its arrangement in the outgoing area of the fuse load bar or by an extension of this area, allows one and the same bar with all known connection techniques, i. especially frame clamp, bolt and nut to provide.
  • each of the three current transformers is designed to be suitable for a power greater than 5 VA flowing through its primary conductor.
  • the present current transformer unit can also be used with open distribution strips, in which the fuse links can be pulled out of the open housing with a suitable tool.
  • the term fuse load bar is therefore intended to include both fuse load switch strips and open distribution strips.
  • the primary conductor unlike plug-in current transformers from the prior art, is a component of the respective current transformer and is connected to the outgoing connection of the fuse load bar.
  • the primary conductor of the current transformer unit according to the invention extends the outgoing terminal of a fuse load bar. Therefore, the second ends of the primary conductors of the power conversion unit are designed so that they can be connected to a connecting cable.
  • the primary conductor is designed as a conductor plate.
  • a prerequisite for the realization of a current transformer unit according to the invention is that, at least in one embodiment, it has a construction dimension whose width and height do not exceed the dimensions of the outlet region of a conventional safety edge.
  • the cores of the three current transformers are arranged so that at least two of the cores have no spatial overlap in a direction parallel to the primary conductors.
  • An offset arrangement of at least one core with respect to the two other cores in a direction substantially parallel to the primary conductors makes it possible to minimize the overall height of the current transformer unit.
  • the three primary conductors are arranged substantially parallel to one another.
  • the primary conductor has a throughbore for screwing the primary conductor to an output terminal of a fuse load bar.
  • a screw connection of the primary conductor to the outgoing connection ensures a good electrical connection between the current transformer unit and the fuse load bar.
  • the second end of the primary conductor may have a throughbore for screwing the primary conductor to a cable lug of a connection cable. It is expedient if the primary conductor in the region of the through hole has a thread for receiving a cross through the cable lug screw or a nut is so connected to the primary conductor, that it has a concentric to the through hole internal thread.
  • the second end of the primary conductor has a clamping structure for receiving a connecting cable.
  • the terminal structure is preferably configured such that a cable end of a connection cable can be accommodated therein and the cable can be pressed by means of the clamping structure against an electrically conductive section in order to establish an electrical connection between the connection cable and the primary conductor.
  • the current transformer unit comprises a housing, wherein in the housing a recess associated with the primary conductor is provided, into which a push insert can be inserted, wherein the push insert has a recess for receiving a connection element.
  • Such an embodiment of the current transformer unit with one, but preferably three drawer elements or thrust inserts for receiving a connection element allows rapid adaptation of the second, the outgoing terminals forming ends of the current transformer unit. Such an adaptation can also take place during assembly on a construction site.
  • the push insert and the recess of the housing are preferably designed such that a arranged in the recess of the push insert connecting element after insertion of the push insert into the corresponding recess of the housing has an electrical contact with the respective primary conductor of the current transformer unit.
  • connection element which is receivable in the recess of the push insert, a clamping structure.
  • the connecting element is a nut which provides a screw for screwing a pole piece to the primary conductor.
  • the push insert and / or the recess in the housing of the current transformer unit has a movable or deformable latching element, and the recess in the housing of the current transformer unit and / or the push insert has a recess for receiving the latching element. In this way, the mechanical stability of the connected by means of the drawer assembly connected to the primary conductor connecting element increases.
  • At least one of the aforementioned objects is also achieved by a fuse load bar with a current transformer element described above.
  • the fuse load bar is a fuse load switch bar comprising a housing base in which three electrical busbar terminals, each connected to a first fuse receptacle, and three outgoing terminals, each connected to a second fuse receptacle, a housing top and a housing Over the upper housing part 29ränkbar arranged switching cover having at least one holding device for a fuse link, wherein in each case a primary conductor of the current transformer unit is connected to an outgoing terminal of the fuse load switching strip.
  • FIGS. 1 to 7 illustrated embodiment of a current transformer unit according to the invention for a fuse load bar has an arrangement of three current transformers 1, 2, 3, which are arranged compactly in a multi-part housing 4, 5, 6.
  • each current transformer of the current transformer unit is particularly well in the sectional view FIG. 5 to recognize.
  • the sectional view FIG. 5 illustrates a section through the current transformer unit in a plane which is perpendicular to the plane defined by the primary conductors 10, 11, 12 of the transducers 1, 2, 3 planes and which passes through the clamping screw 15 of the clamping structure 9 of the upper transducer 3.
  • the converter 3 has a primary conductor 12 designed as a conductor plate, which serves to extend the outgoing terminal of a fuse load switching strip (not shown).
  • the current transformer 3 has a metallic core 18, which is designed as a ring and surrounds the primary conductor 12.
  • the core 18 in turn is surrounded by a secondary conductor 19 whose ends are each connected to a measuring terminal 22, 23.
  • the measuring terminals 22, 23 can be contacted from outside with the aid of test probes in order to detect the measuring current induced in the secondary conductor 19.
  • the primary conductor 12, the annular surrounding core 18 and the secondary conductor 19 together form a transformer which on the primary side has only half a winding formed by the primary conductor 12 extending through the core 18.
  • the two further provided for the other two outgoing terminals of a switching strip converter 1, 2 have an identical structure to the converter 3. They also each have a primary conductor 10, 11, a core 16, 17 and a secondary conductor 20, 21.
  • the primary conductors 10, 11, 12 of the current transformers 1, 2, 3 each have a throughbore 24, 25, 26 at their first end. With the help of these through holes and screws engaging in the through holes, the current transformer unit is electrically and mechanically connected to the outgoing terminals of a fuse load switch bar.
  • the three primary conductors 10, 11 and 12 each have a clamping structure 7, 8, 9 for connecting the primary conductors 10, 11, 12 with cables as outlets of the fuse load switching strip.
  • the concrete structure of the terminal assemblies 7, 8, 9 is particularly good the FIGS. 1 . 6 and 7.
  • clamping structure 7 The detailed construction of the clamping structure 7 will now be described with reference to FIGS FIG. 6 described.
  • the two other terminal assemblies 8 and 9 are identical.
  • the clamping structure 7 has a substantially U-shaped cage bracket 27 which has two leg sections 28, 29 and a bottom section 30 connecting the leg sections 28, 29. Furthermore, a cage yoke 31 is provided, which essentially connects the side sections of the leg sections 28, 29 facing away from the bottom section 30, so that a space is formed between the cage yoke 31 on the one hand and the cage bracket 27 on the other hand, which is also referred to below as a cage cell , In the cage cell, a clamping piece 32 is arranged between the two leg sections 28, 29. This clamping piece 32 divides the cage cell into a terminal space for the primary conductor 11 and a cable space for receiving the cable.
  • connection space is essentially limited by the clamping piece 32 and the bottom portion 30, while the cable space of the clamping piece 32, the two leg portions 28, 29 and the cage yoke 31 is limited.
  • the cage yoke 31 has a threaded through bore through which a threaded pin 14 is connected to a clamping plate 33 which is arranged in the cable space. By turning the threaded pin 14, the clamping plate 33 can be moved in the direction of the clamping piece 32 or from this.
  • the two leg portions 28, 29 have at their end facing away from the bottom portion 30 two cranked sections 34, 35 on. These headed portions 34, 35 are formed such that the distance between them is slightly smaller than the corresponding extent of the cage yoke 31, so that in the example in FIG.
  • both legs 28, 29 have an approximately U-shaped recess which surrounds a corresponding tongue section 36.
  • This tongue portion 36 has been bent in the production something in the direction of the cage cell, so that in the example in FIG. 1 shown position the cage yoke 31 is supported on both sides of the corresponding tongue portion 36.
  • each of the clamping assemblies 7, 8, 9 is fixed to the housing 4 of the transducer device by means of a push insert 37, 38, 39.
  • All thrust inserts 37, 38, 39 are designed identically, so that the specific embodiment now with reference to FIG. 6 will be described with reference to the push insert 37.
  • the push insert 37 has a recess 40 into which the bottom portion 30 of the clamping structure 27 can be inserted.
  • the recess 40 is bounded by lateral cheeks 41, 42 and a front stop surface 43. Furthermore, the push insert on two locking elements (not shown in the figures), which are elastically deformable.
  • the push insert 38 can receive a nut (not shown) which makes it possible to screw a pole piece to the primary conductors 10, 11, 12.
  • the push insert 38 has a recess 44 for receiving a nut.
  • the converter unit has a comparatively small width and height.
  • the two current transformers 1, 2, which belong to the two primary conductors 10, 11, arranged at the same height, ie the centers of their annular cores lie in the plane in which the primary conductors 10, 11 are located.
  • the third transducer is arranged in a different plane, both its primary conductor 12, its core 18 and its secondary conductor 19 are above the other two current transformers 1, 2.
  • the third current transformer 3 in the viewing direction, for example, of FIG. 1 behind the other two current transformers 1, 2 arranged. Ie. the cores 16 and 18 or 17 and 18 of the current transformers 1 and 3 or 2 and 3 do not overlap one another spatially in a direction parallel to the primary conductors 10, 11, 12. In this way, a much narrower packing of the Storm converter 1, 2 and 3 can be achieved, ie, the primary conductors 10 and 12 or 11 and 12 have a much smaller distance from each other, as would be the case if the third converter 3 directly over the two transducers 1 and 2 would be arranged.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Control Of Electric Motors In General (AREA)
  • Dc-Dc Converters (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The current transformer assembly has three current transformers (1,2,3) for detecting current flowing through the fuse block. Each of the current transformer has primary conductors (10,12) circumferentially surrounding the core. The coil shaped core surrounds the core secondary conductor. The ends of the secondary conductor have a measuring port, and the primary conductor is connected to output connection of the fuse panel with a connecting cable. An independent claim is also included for a fuse panel.

Description

Die vorliegende Erfindung betrifft eine Stromwandlereinheit für eine Sicherungslastleiste sowie eine Sicherungslastleiste mit einer solchen Stromwandlereinheit.The present invention relates to a power converter unit for a fuse load bar and a fuse load bar with such a power converter unit.

Sicherungslastschaltleisten, zumeist Niederspannungs-Hochleistungs-(NH)-Sicherungslastschaltleisten, sind seit langem bekannt und dienen dazu, abgesicherte elektrische Abgänge von Sammelschienen bereitzustellen, die unter Last getrennt werden können. Die Einrichtungen weisen im Allgemeinen ein oder mehrere Sicherungsunterteile auf, die jeweils zwei Sicherungsaufnahmen aufweisen und in einem Gehäuse angeordnet sind. Entsprechende Sicherungseinsätze sind an einem oder mehreren Schaltdeckeln montiert, so dass bei einem geschlossenen Schaltdeckel die Sicherungseinsätze in die Sicherungsunterteile eingesetzt sind und eine Verbindung zwischen den jeweiligen - mit den Sammelschienen verbindbaren - Einspeisekontakten und den Abgangskontakten herstellen. Beim Öffnen des oder der Schaltdeckel werden die Sicherungseinsätze aus den Sicherungsunterteilen gezogen, so dass die Verbindung unterbrochen ist.Fuse-type switch disconnectors, usually low-voltage, high-performance (NH) fuse switch disconnectors, have long been known and serve to provide fused electrical outlets from busbars which can be disconnected under load. The devices generally have one or more fuse bases, each having two fuse receptacles and arranged in a housing. Corresponding fuse links are mounted on one or more switch covers, so that with a closed switch cover the fuse links are inserted into the fuse bases and make a connection between the respective - connectable to the busbars - feed contacts and the outgoing contacts. When opening the cover or the cover, the fuse links are pulled out of the fuse bases so that the connection is broken.

Häufig ist eine Messung des Stromflusses über den bereitgestellten Abgang erwünscht. Dazu werden meist Stromwandler eingesetzt. Stromwandler arbeiten wie Transformatoren, d. h. ein durch einen Primärleiter, im Stand der Technik zumeist die elektrische Verbindung zwischen Sammelschienenanschluß und einer ersten Sicherungsaufnahme oder die elektrische Verbindung zwischen einer zweiten Sicherungsaufnahme und dem Abgangsanschluß der Leiste, fließender Wechselstrom induziert in einen vom Stromwandler bereitgestellten Sekundärleiter einem vom Primärkreis galvanisch getrennten Sekundärstrom, der zur Bestimmung des Primärstroms gemessen und ausgewertet werden kann. Somit erfolgt die Messung des Stromflusses über den von der Sicherungslastleiste bereitgestellten Abgang berührungslos. Dabei wird der Stromwandler die Verbindungsleitung zwischen dem Sammelschienenanschluß und einer ersten Sicherungsaufnahme oder einer zweiten Sicherungsaufnahme und einem Abgangsanschluß umgebend angeordnet.Frequently, a measurement of the current flow over the provided output is desired. For this purpose, current transformers are usually used. Current transformers work like transformers, d. H. a through a primary conductor, in the prior art usually the electrical connection between the busbar terminal and a first fuse receptacle or the electrical connection between a second fuse receptacle and the output terminal of the bar, flowing alternating current induced in a provided by the current transformer secondary conductor from the primary circuit galvanically isolated secondary current, the can be measured and evaluated to determine the primary current. Thus, the measurement of the current flow takes place without contact via the outlet provided by the fuse load bar. In this case, the current transformer is arranged surrounding the connecting line between the busbar terminal and a first fuse holder or a second fuse holder and an outgoing terminal.

Es sind beispielsweise sogenannte Aufsteckstromwandler bekannt, die einen Kern und einen diesen umgebenden Sekundärleiter aufweisen. Der Kern wird über eine stromdurchflossene Leitung geschoben und ist gegenüber dieser elektrisch isoliert. Der Wechselstromfluß durch die Leitung induziert in dem Kern ein magnetisches Wechselfeld, welches wiederum einen Stromfluß in dem den Kern spulenförmig umgebenden Sekundärleiter induziert. Derartige Aufsteckstromwandler haben jedoch in den typischen Baugrößen Dicken, welche erheblich auftragen und in der Regel dazu führen, dass die Sicherungslastschaltleisten in einem Schaltschrank höher aufbauen als die gleichen Leisten ohne Stromwandler.For example, so-called plug-on current transformers are known which have a core and a secondary conductor surrounding it. The core is pushed over a current-carrying line and is electrically insulated from this. The AC current through the line induces an alternating magnetic field in the core, which in turn induces current flow in the secondary conductor surrounding the core in a coil shape. However, such plug-on current transformers have thicknesses in the typical sizes which apply considerably and as a rule cause the fuse switch disconnectors in a control cabinet to be higher than the same bars without current transformers.

Darüber hinaus ist die Montage von Aufsteckstromwandlern an bestehende, bereits installierte Sicherungslastschaltleisten aufwendig, da zur Montage die Sicherungslastschaltleiste aus dem Schaltschrank ausgebaut werden muss.In addition, the mounting of plug-on current transformers to existing, already installed fuse switch-disconnectors is expensive, since the fuse switch-disconnector must be removed from the control cabinet for installation.

Beispielsweise ist in der DE 100 02 800 A1 eine Ausführungsform einer NH-Sicherungslastschaltleiste gezeigt, bei der bei Bedarf ein Stromwandler mit einer schlitzförmigen Öffnung auf den Z-förmigen Einspeisekontakt zwischen dem elektrischen Sammelschienenanschluß und einer ersten Sicherungsaufnahme aufgefädelt werden kann. Um ein solches Auffädeln zu ermöglichen, muss jedoch die Gehäuseunterseite offen ausgeführt sein, was zu erheblichen konstruktiven Maßnahmen an dem Gehäuse führt. Darüber hinaus ist ein entsprechender Berührungsschutz kaum zu gewährleisten.For example, in the DE 100 02 800 A1 an embodiment of a NH fuse-switch-disconnector is shown in which, if necessary, a current transformer can be threaded with a slot-shaped opening on the Z-shaped feed contact between the electrical busbar terminal and a first fuse holder. In order to enable such threading, however, the housing bottom must be designed to be open, which leads to considerable constructive measures on the housing. In addition, a corresponding contact protection can hardly be guaranteed.

Demgegenüber ist es Aufgabe der vorliegenden Erfindung eine Stromwandlereinheit bereitzustellen, welche nachträglich, d. h. dann, wenn die Sicherungslastleiste bereits in einen Schaltschrank eingebaut ist, installiert werden kann.In contrast, it is an object of the present invention to provide a current transformer unit, which subsequently, d. H. then, if the fuse load bar is already installed in a cabinet, can be installed.

Darüber hinaus ist es Aufgabe der vorliegenden Erfindung eine Stromwandlereinheit bereitzustellen, die so ausgestaltet ist, dass sie mit einer herkömmlichen, handelsüblichen Sicherungslastleiste verbindbar ist, ohne dass die Sicherungslastleiste dafür eine spezielle Ausgestaltung aufweisen müßte.In addition, it is an object of the present invention to provide a current transformer unit, which is designed so that it can be connected to a conventional, commercially available fuse load bar, without the fuse load bar would have to have a special design.

Zumindest eine der zuvor genannten Aufgaben wird durch eine Stromwandlereinheit für eine Sicherungslastleiste mit drei Stromwandlern zur Erfassung eines durch die Sicherungslastleiste fließenden Stroms gelöst, wobei jeder der Stromwandler je einen Primärleiter, einen den Primärleiter ringförmig umgebenden Kern und einen den Kern spulenförmig umgebenden Sekundärleiter aufweist, wobei die Enden des Sekundärleiters je einen Messanschluss aufweisen, und wobei der Primärleiter ein erstes mit einem Abgangsanschluss der Sicherungslastleiste verbindbares Ende und ein zweites mit einem Anschlusskabel verbindbares Ende aufweist.At least one of the above objects is achieved by a current transformer unit for a fuse load bar with three current transformers for detecting a current flowing through the fuse load bar current, each of the current transformers each having a primary conductor, a ring surrounding the primary conductor core and a coil surrounding the core secondary conductor, wherein each of the ends of the secondary conductor has a measuring terminal, and wherein the primary conductor has a first end connectable to a feeder terminal of the fuse load bar and a second end connectable to a terminal cable.

Die erfindungsgemäße Stromwandlereinheit läßt sich an einer handelsüblichen Sicherungslastleiste montieren, ohne dass diese aus dem Schaltschrank ausgebaut werden müßte. Dazu ist die Stromwandlereinheit mit den Abgangsanschlüssen der Sicherungslastleiste verbindbar. Die Sicherungslastleiste muss für die Aufnahme des erfindungsgemäßen Stromwandlerelements an ihrem Abgangsbereich keine besonderen konstruktiven Merkmale aufweisen, die von den handelsüblichen Leisten abweichen.The current transformer unit according to the invention can be mounted on a commercial fuse load bar without having to remove these from the cabinet. For this purpose, the current transformer unit can be connected to the outgoing connections of the fuse load bar. The fuse load bar must have no special design features for receiving the current transformer element according to the invention at its output range, which deviate from the commercial strips.

Darüber hinaus ermöglicht es die erfindungsgemäße Stromwandlereinheit durch Ihre Anordnung im Abgangsbereich der Sicherungslastleiste bzw. durch eine Verlängerung dieses Bereichs, ein und dieselbe Leiste mit allen bekannten Anschlusstechniken, d.h. insbesondere Rahmenklemme, Bolzen und Mutter, zu versehen.In addition, the current transformer unit according to the invention, by its arrangement in the outgoing area of the fuse load bar or by an extension of this area, allows one and the same bar with all known connection techniques, i. especially frame clamp, bolt and nut to provide.

Die Integration der drei Stromwandler in einer einzigen Stromwandlereinheit vereinfacht die Montage erheblich, da statt drei getrennten Wandler nur eine einzige kompakte Einheit zu montieren ist.The integration of the three current transformers in a single current transformer unit simplifies the assembly considerably, since instead of three separate transducers only a single compact unit is to be mounted.

Die Anordnung der Wandlereinheit im Abgangsbereich einer Sicherungslastleiste stellt mehr Volumen für die Stromwandler zur Verfügung als dies bei herkömmlich zwischen Sicherungslastleiste und Sammelschiene angeordneten Stromwandlern der Fall ist. Daher können mit der erfindungsgemäßen Stromwandlereinheit größere Leistungsbereiche der Sicherungslastleisten abgedeckt werden als dies herkömmlich der Fall ist. In einer Ausführungsform der Erfindung ist jeder der drei Stromwandler so ausgestaltet bzw. dimensioniert, dass er für eine durch seinen Primärleiter fließende Leistung von mehr als 5 VA geeignet ist.The arrangement of the converter unit in the outgoing area of a fuse load bar provides more volume for the current transformer than is the case with conventionally arranged between fuse load bar and busbar current transformers. Therefore, larger power ranges of the fuse load bars can be covered with the current transformer unit according to the invention than is conventionally the case. In one embodiment of the invention, each of the three current transformers is designed to be suitable for a power greater than 5 VA flowing through its primary conductor.

Grundsätzlich kann die vorliegende Stromwandlereinheit auch bei offenen Verteilerleisten eingesetzt werden, bei denen die Sicherungseinsätze mit einem geeigneten Werkzeug aus dem offenen Gehäuse gezogen werden können. Der Begriff Sicherungslastleiste soll daher sowohl Sicherungslastschaltleisten als auch offene Verteilerleisten umfassen.In principle, the present current transformer unit can also be used with open distribution strips, in which the fuse links can be pulled out of the open housing with a suitable tool. The term fuse load bar is therefore intended to include both fuse load switch strips and open distribution strips.

Bei der erfindungsgemäßen Stromwandlereinheit ist der Primärleiter anders als bei Aufsteckstromwandlern aus dem Stand der Technik Bestandteil des jeweiligen Stromwandlers und wird mit dem Abgangsanschluss der Sicherungslastleiste verbunden. In diesem Sinne verlängert der Primärleiter der erfindungsgemäßen Stromwandlereinheit den Abgangsanschluß einer Sicherungslastleiste. Daher sind die zweiten Enden der Primärleiter der Stromwandlereinheit so ausgestaltet, dass sie mit einem Anschlußkabel verbindbar sind.In the case of the current transformer unit according to the invention, the primary conductor, unlike plug-in current transformers from the prior art, is a component of the respective current transformer and is connected to the outgoing connection of the fuse load bar. In this sense, the primary conductor of the current transformer unit according to the invention extends the outgoing terminal of a fuse load bar. Therefore, the second ends of the primary conductors of the power conversion unit are designed so that they can be connected to a connecting cable.

In einer Ausführungsform ist der Primärleiter als Leiterblech ausgeführt.In one embodiment, the primary conductor is designed as a conductor plate.

Voraussetzung für die Realisierung einer erfindungsgemäßen Stromwandlereinheit ist, dass diese zumindest in einer Ausführungsform ein Baumaß aufweist, dessen Breite und Höhe die Abmessungen des Abgangsbereichs einer herkömmlichen Schaltleiste nicht übersteigt.A prerequisite for the realization of a current transformer unit according to the invention is that, at least in one embodiment, it has a construction dimension whose width and height do not exceed the dimensions of the outlet region of a conventional safety edge.

Dabei ist es zweckmäßig, wenn zwei der Primärleiter in einer Ebene angeordnet sind, während der dritte Primärleiter einen Abstand zu dieser Ebene aufweist. Auf diese Weise lassen sich die Primärleiter mit den Abgangsanschlüssen einer handelsüblichen Sicherungslastleiste verbinden, welche zumeist eine entsprechende geometrische Anordnung der Abgangsanschlüsse aufweisen. Die Verlagerung eines Primärleiters aus der Ebene heraus, die von den beiden anderen Primärleitern aufgespannt wird, ermöglicht eine Minimierung der Baubreite der Stromwandlereinheit.It is expedient if two of the primary conductors are arranged in a plane, while the third primary conductor has a distance to this plane. In this way, the Connect primary conductor with the outgoing terminals of a commercial fuse load bar, which usually have a corresponding geometric arrangement of the outgoing terminals. The displacement of a primary conductor out of the plane, which is spanned by the two other primary conductors, enables a minimization of the width of the current transformer unit.

In einer bevorzugten Ausführungsform sind die Kerne der drei Stromwandler so angeordnet, dass zumindest zwei der Kerne in einer Richtung parallel zu den Primärleitern keinen räumlichen Überlapp aufweisen.In a preferred embodiment, the cores of the three current transformers are arranged so that at least two of the cores have no spatial overlap in a direction parallel to the primary conductors.

Eine versetzte Anordnung zumindest eines Kerns gegenüber den beiden anderen Kernen in einer Richtung im Wesentlichen parallel zu den Primärleitern ermöglicht es, die Bauhöhe der Stromwandlereinheit zu minimieren. Dabei sind in einer Ausführungsform die drei Primärleiter im Wesentlichen parallel zueinander angeordnet.An offset arrangement of at least one core with respect to the two other cores in a direction substantially parallel to the primary conductors makes it possible to minimize the overall height of the current transformer unit. In one embodiment, the three primary conductors are arranged substantially parallel to one another.

In einer Ausführungsform weist der Primärleiter an seinem ersten Ende eine Durchbohrung zum Verschrauben des Primärleiters mit einem Ausgangsanschluß eine Sicherungslastleiste auf. Eine Verschraubung des Primärleiters mit dem Abgangsanschluß gewährleistet eine elektrisch gut leitende Verbindung zwischen der Stromwandlereinheit und der Sicherungslastleiste.In one embodiment, at its first end, the primary conductor has a throughbore for screwing the primary conductor to an output terminal of a fuse load bar. A screw connection of the primary conductor to the outgoing connection ensures a good electrical connection between the current transformer unit and the fuse load bar.

In einer Ausführungsform der Stromwandlereinheit kann das zweite Ende des Primärleiters eine Durchbohrung zum Verschrauben des Primärleiters mit einem Kabelschuh eines Anschlußkabels aufweisen. Dabei ist es zweckmäßig, wenn der Primärleiter im Bereich der Durchbohrung ein Gewinde zur Aufnahme einer durch den Kabelschuh greifenden Schraube aufweist oder eine Schraubenmutter derart mit dem Primärleiter verbunden ist, dass sie ein zu der Durchbohrung konzentrisches Innengewinde aufweist.In one embodiment of the power conversion unit, the second end of the primary conductor may have a throughbore for screwing the primary conductor to a cable lug of a connection cable. It is expedient if the primary conductor in the region of the through hole has a thread for receiving a cross through the cable lug screw or a nut is so connected to the primary conductor, that it has a concentric to the through hole internal thread.

In einer alternativen Ausführungsform weist das zweite Ende des Primärleiters einen Klemmaufbau zur Aufnahme eines Anschlußkabels auf. Dabei ist der Klemmaufbau vorzugsweise so ausgestaltet, dass sich in ihm ein Kabelende eines Anschlußkabels aufnehmen läßt und das Kabel mit Hilfe des Klemmaufbaus gegen einen elektrisch leitenden Abschnitt pressbar ist, um eine elektrische Verbindung zwischen dem Anschlußkabel und dem Primärleiter herzustellen.In an alternative embodiment, the second end of the primary conductor has a clamping structure for receiving a connecting cable. In this case, the terminal structure is preferably configured such that a cable end of a connection cable can be accommodated therein and the cable can be pressed by means of the clamping structure against an electrically conductive section in order to establish an electrical connection between the connection cable and the primary conductor.

In einer bevorzugten Ausführungsform jedoch weist die Stromwandlereinheit ein Gehäuse auf, wobei in dem Gehäuse eine dem Primärleiter zugeordnete Ausnehmung vorgesehen ist, in die ein Schubeinsatz einschiebbar ist, wobei der Schubeinsatz eine Ausnehmung zur Aufnahme eines Anschlußelements aufweist.In a preferred embodiment, however, the current transformer unit comprises a housing, wherein in the housing a recess associated with the primary conductor is provided, into which a push insert can be inserted, wherein the push insert has a recess for receiving a connection element.

Eine solche Ausgestaltung der Stromwandlereinheit mit einer, vorzugsweise jedoch drei Schubladenelementen bzw. Schubeinsätzen zur Aufnahme eines Anschlußelements ermöglicht eine schnelle Anpassung der zweiten, die Abgangsanschlüsse bildenden Enden der Stromwandlereinheit. Eine solche Anpassung kann auch noch während der Montage auf einer Baustelle erfolgen. Sobald feststeht, wie die Stromwandlereinheit mit dem Abgangskabeln verbunden werden soll, kann der Schubeinsatz mit einem entsprechenden Anschlusselement bestückt und in das Gehäuse der Stromwandlereinheit eingeschoben werden.Such an embodiment of the current transformer unit with one, but preferably three drawer elements or thrust inserts for receiving a connection element allows rapid adaptation of the second, the outgoing terminals forming ends of the current transformer unit. Such an adaptation can also take place during assembly on a construction site. Once it is clear how the current transformer unit to be connected to the outlet cables, the push insert can be equipped with a corresponding connection element and inserted into the housing of the current transformer unit.

Dabei sind der Schubeinsatz und die Ausnehmung des Gehäuses vorzugsweise so ausgestaltet, dass ein in der Ausnehmung des Schubeinsatzes angeordnetes Anschlusselement nach dem Einschieben des Schubeinsatzes in die entsprechende Ausnehmung des Gehäuses einen elektrischen Kontakt zu dem jeweiligen Primärleiter der Stromwandlereinheit aufweist.In this case, the push insert and the recess of the housing are preferably designed such that a arranged in the recess of the push insert connecting element after insertion of the push insert into the corresponding recess of the housing has an electrical contact with the respective primary conductor of the current transformer unit.

In einer Ausführungsform ist das Anschlußelement, welches in der Ausnehmung des Schubeinsatzes aufnehmbar ist, ein Klemmaufbau. In einer alternativen Ausführungsform ist das Anschlußelement eine Schraubenmutter, die eine Schraube zur Verschraubung eines Polschuhs mit dem Primärleiter bereitstellt.In one embodiment, the connection element, which is receivable in the recess of the push insert, a clamping structure. In an alternative embodiment, the connecting element is a nut which provides a screw for screwing a pole piece to the primary conductor.

In einer Ausführungsform weist der Schubeinsatz und/oder die Ausnehmung in dem Gehäuse der Stromwandlereinheit ein bewegliches oder verformbares Rastelement auf, und die Ausnehmung in dem Gehäuse der Stromwandlereinheit und/oder der Schubeinsatz weist eine Vertiefung zur Aufnahme des Rastelements auf. Auf diese Weise erhöht sich die mechanische Stabilität des mit Hilfe der Schubladenanordnung mit dem Primärleiter verbundenen Anschlußelements.In one embodiment, the push insert and / or the recess in the housing of the current transformer unit has a movable or deformable latching element, and the recess in the housing of the current transformer unit and / or the push insert has a recess for receiving the latching element. In this way, the mechanical stability of the connected by means of the drawer assembly connected to the primary conductor connecting element increases.

Zumindest eine der zuvor genannten Aufgaben wird auch durch eine Sicherungslastleiste mit einem zuvor beschriebenen Stromwandlerelement gelöst.At least one of the aforementioned objects is also achieved by a fuse load bar with a current transformer element described above.

Dabei ist die Sicherungslastleiste in einer bevorzugten Ausführungsform eine Sicherungslastschaltleiste, die ein Gehäuseunterteil, in dem drei elektrische Sammelschienenanschlüsse, die jeweils mit einer ersten Sicherungsaufnahme verbunden ist, und drei Abgangsanschlüsse, die jeweils mit einer zweiten Sicherungsaufnahme verbunden sind, angeordnet sind, ein Gehäuseoberteil und einen gegenüber dem Gehäuseoberteil verschränkbar angeordneten Schaltdeckel aufweist, der mindestens eine Halteeinrichtung für einen Sicherungseinsatz aufweist, wobei jeweils ein Primärleiter der Stromwandlereinheit mit einem Abgangsanschluß der Sicherungslastschaltleiste verbunden ist.In this case, in a preferred embodiment, the fuse load bar is a fuse load switch bar comprising a housing base in which three electrical busbar terminals, each connected to a first fuse receptacle, and three outgoing terminals, each connected to a second fuse receptacle, a housing top and a housing Over the upper housing part verschränkbar arranged switching cover having at least one holding device for a fuse link, wherein in each case a primary conductor of the current transformer unit is connected to an outgoing terminal of the fuse load switching strip.

Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung werden anhand der folgenden Beschreibung einer Ausführungsform und der dazugehörigen Figuren deutlich.

  • Figur 1 zeigt eine dreidimensionale Ansicht einer Ausführungsform der erfindungsgemäßen Stromwandlereinheit vom zweiten Ende der Primärleiter aus gesehen.
  • Figur 2 zeigt eine dreidimensionale Darstellung der Stromwandlereinheit aus Figur 1 in einer Ansicht vom ersten Ende der Primärleiter aus gesehen.
  • Figur 3 zeigt eine teilweise Schnittansicht der Stromwandlereinheit aus Figuren 1 und 2 in einer Ebene, welche den oberen Wandler schneidet.
  • Figur 4 zeigt eine teilweise Schnittansicht durch den Stromwandler gemäß Figuren 1 bis 3 in einer Schnittebene durch die beiden unteren Wandler.
  • Figur 5 zeigt eine teilweise Schnittansicht durch die Stromwandlereinheit gemäß Figuren 1 bis 5 in einer Ebene parallel zu den Primärleitern.
  • Figur 5 zeigt eine Explosionsansicht der Stromwandlereinheit gemäß Figuren 1 bis 6.
Further advantages, features and applications of the present invention will become apparent from the following description of an embodiment and the associated figures.
  • FIG. 1 shows a three-dimensional view of an embodiment of the current transformer unit according to the invention seen from the second end of the primary conductor.
  • FIG. 2 shows a three-dimensional representation of the current transformer unit FIG. 1 seen in a view from the first end of the primary conductor.
  • FIG. 3 shows a partial sectional view of the current transformer unit FIGS. 1 and 2 in a plane which intersects the upper transducer.
  • FIG. 4 shows a partial sectional view through the current transformer according to FIGS. 1 to 3 in a sectional plane through the two lower transducers.
  • FIG. 5 shows a partial sectional view through the current transformer unit according to FIGS. 1 to 5 in a plane parallel to the primary ladders.
  • FIG. 5 shows an exploded view of the current transformer unit according to FIGS. 1 to 6 ,

Die in den Figuren 1 bis 7 dargestellte Ausführungsform einer erfindungsgemäßen Stromwandlereinheit für eine Sicherungslastleiste weist eine Anordnung von drei Stromwandlern 1, 2, 3 auf, die kompakt in einem mehrteiligen Gehäuse 4, 5, 6 angeordnet sind.The in the FIGS. 1 to 7 illustrated embodiment of a current transformer unit according to the invention for a fuse load bar has an arrangement of three current transformers 1, 2, 3, which are arranged compactly in a multi-part housing 4, 5, 6.

Der Aufbau eines jeden Stromwandlers der Stromwandlereinheit ist besonders gut in der Schnittansicht aus Figur 5 zu erkennen. Die Schnittansicht aus Figur 5 stellt einen Schnitt durch die Stromwandlereinheit in einer Ebene dar, die senkrecht zu den von den Primärleitern 10, 11, 12 der Wandler 1, 2, 3 aufgespannten Ebenen steht und die durch die Klemmschraube 15 des Klemmaufbaus 9 des oberen Wandlers 3 verläuft.The construction of each current transformer of the current transformer unit is particularly well in the sectional view FIG. 5 to recognize. The sectional view FIG. 5 illustrates a section through the current transformer unit in a plane which is perpendicular to the plane defined by the primary conductors 10, 11, 12 of the transducers 1, 2, 3 planes and which passes through the clamping screw 15 of the clamping structure 9 of the upper transducer 3.

Der Wandler 3 weist einen als Leiterblech ausgeführten Primärleiter 12 auf, welcher der Verlängerung des Abgangsanschlusses einer Sicherungslastschaltleiste (nicht dargestellt) dient. Um den Stromfluss durch den Primärleiter 12 erfassen zu können, verfügt der Stromwandler 3 über einen metallischen Kern 18, der als Ring ausgestaltet ist und den Primärleiter 12 umgibt. Der Kern 18 wiederum ist von einem Sekundärleiter 19 umgeben, dessen Enden jeweils mit einem Meßanschluß 22, 23 verbunden sind. Die Meßanschlüsse 22, 23 sind von außen mit Hilfe von Prüfspitzen kontaktierbar, um den im Sekundärleiter 19 induzierten Meßstrom zu erfassen.The converter 3 has a primary conductor 12 designed as a conductor plate, which serves to extend the outgoing terminal of a fuse load switching strip (not shown). In order to detect the current flow through the primary conductor 12, the current transformer 3 has a metallic core 18, which is designed as a ring and surrounds the primary conductor 12. The core 18 in turn is surrounded by a secondary conductor 19 whose ends are each connected to a measuring terminal 22, 23. The measuring terminals 22, 23 can be contacted from outside with the aid of test probes in order to detect the measuring current induced in the secondary conductor 19.

Der Primärleiter 12, der ihn ringförmige umgebende Kern 18 sowie der Sekundärleiter 19 bilden zusammen einen Transformator, welcher primärseitig lediglich eine halbe Wicklung aufweist, die von dem durch den Kern 18 verlaufenden Primärleiter 12 gebildet wird.The primary conductor 12, the annular surrounding core 18 and the secondary conductor 19 together form a transformer which on the primary side has only half a winding formed by the primary conductor 12 extending through the core 18.

Die beiden weiteren für die zwei anderen Abgangsanschlüsse einer Schaltleiste vorgesehenen Wandler 1, 2 weisen einen identischen Aufbau zu dem Wandler 3 auf. Sie verfügen ebenfalls jeweils über einen Primärleiter 10, 11, einen Kern 16, 17 sowie einen Sekundärleiter 20, 21.The two further provided for the other two outgoing terminals of a switching strip converter 1, 2 have an identical structure to the converter 3. They also each have a primary conductor 10, 11, a core 16, 17 and a secondary conductor 20, 21.

Wie besonders deutlich aus der dreidimensionalen Ansicht aus Figur 2 hervorgeht, weisen die Primärleiter 10, 11, 12 der Stromwandler 1, 2, 3 an ihrem ersten Ende jeweils eine Durchbohrung 24, 25, 26 auf. Mit Hilfe dieser Durchbohrungen und in die Durchbohrungen eingreifende Schrauben wird die Stromwandlereinheit mit den Abgangsanschlüssen einer Sicherungslastschaltleiste elektrisch und mechanisch verbunden.How particularly clear from the three-dimensional view FIG. 2 As can be seen, the primary conductors 10, 11, 12 of the current transformers 1, 2, 3 each have a throughbore 24, 25, 26 at their first end. With the help of these through holes and screws engaging in the through holes, the current transformer unit is electrically and mechanically connected to the outgoing terminals of a fuse load switch bar.

An ihren gegenüberliegenden Enden weisen die drei Primärleiter 10, 11 und 12 jeweils einen Klemmaufbau 7, 8, 9 zum Verbinden der Primärleiter 10, 11, 12 mit Kabeln als Abgängen der Sicherungslastschaltleiste aufweisen. Der konkrete Aufbau der Klemmaufbauten 7, 8, 9 ist besonders gut den Figuren 1, 6 und 7 zu entnehmen.At their opposite ends, the three primary conductors 10, 11 and 12 each have a clamping structure 7, 8, 9 for connecting the primary conductors 10, 11, 12 with cables as outlets of the fuse load switching strip. The concrete structure of the terminal assemblies 7, 8, 9 is particularly good the FIGS. 1 . 6 and 7.

Die detaillierte Konstruktion des Klemmaufbaus 7 wird nun anhand der Figur 6 beschrieben. Die beiden weiteren Klemmaufbauten 8 und 9 sind identisch aufgebaut.The detailed construction of the clamping structure 7 will now be described with reference to FIGS FIG. 6 described. The two other terminal assemblies 8 and 9 are identical.

Der Klemmaufbau 7 weist einen im Wesentlichen U-förmigen Käfigbügel 27 auf, der zwei Schenkelabschnitte 28, 29 und einen die Schenkelabschnitte 28, 29 verbindenden Bodenabschnitt 30 aufweist. Weiterhin ist ein Käfigjoch 31 vorgesehen, welches im Wesentlichen an der dem Bodenabschnitt 30 abgewandten Seite der Schenkelabschnitte 28, 29 diese miteinander verbindet, so dass zwischen dem Käfigjoch 31 einerseits und dem Käfigbügel 27 andererseits ein Raum gebildet wird, der im Folgenden auch Käfigzelle genannt wird. In der Käfigzelle ist zwischen den beiden Schenkelabschnitten 28, 29 ein Klemmstück 32 angeordnet. Dieses Klemmstück 32 unterteilt die Käfigzelle in einen Anschlußraum für den Primärleiter 11 und einen Kabelraum für die Aufnahme des Kabels. Der Anschlussraum wird im Wesentlichen begrenzt durch das Klemmstück 32 und den Bodenabschnitt 30, während der Kabelraum von dem Klemmstück 32, den beiden Schenkelabschnitten 28, 29 und dem Käfigjoch 31 begrenzt wird. Das Käfigjoch 31 weist eine Gewindedurchgangsbohrung auf, durch die ein Gewindestift 14 mit einer Klemmplatte 33, die im Kabelraum angeordnet ist, verbunden ist. Durch Drehen des Gewindestifts 14 kann die Klemmplatte 33 in Richtung des Klemmstücks 32 oder von diesem wegbewegt werden. Die beiden Schenkelabschnitte 28, 29 weisen an ihrem dem Bodenabschnitt 30 abgewandten Ende zwei gekröpfte Abschnitte 34, 35 auf. Diese geköpften Abschnitte 34, 35 sind derart ausgebildet, dass der Abstand zwischen dieses etwas kleiner ist als die entsprechende Ausdehnung des Käfigjochs 31, so dass in der beispielsweise in Figur 1 gezeigten Position das Käfigjoch 31 nicht nach oben aus dem Käfigbügel 27 entnommen werden kann, ohne dass die beiden Schenkel nach außen gebogen werden. Weiterhin weisen beide Schenkel 28, 29 eine in etwa U-förmige Ausnehmung auf, die einen entsprechenden Zungenabschnitt 36 umgibt. Dieser Zungenabschnitt 36 ist bei der Herstellung etwas in Richtung der Käfigzelle gebogen worden, so dass sich bei der beispielsweise in Figur 1 gezeigten Position das Käfigjoch 31 beidseitig auf den entsprechenden Zungenabschnitt 36 abstützt. Zur Entnahme des Käfigjochs 31 müssen entweder die Schenkelabschnitte 28, 29 etwas auseinandergebogen werden oder das Käfigjoch 31 muss nach vorne (oder hinten) herausgeschoben werden.The clamping structure 7 has a substantially U-shaped cage bracket 27 which has two leg sections 28, 29 and a bottom section 30 connecting the leg sections 28, 29. Furthermore, a cage yoke 31 is provided, which essentially connects the side sections of the leg sections 28, 29 facing away from the bottom section 30, so that a space is formed between the cage yoke 31 on the one hand and the cage bracket 27 on the other hand, which is also referred to below as a cage cell , In the cage cell, a clamping piece 32 is arranged between the two leg sections 28, 29. This clamping piece 32 divides the cage cell into a terminal space for the primary conductor 11 and a cable space for receiving the cable. The connection space is essentially limited by the clamping piece 32 and the bottom portion 30, while the cable space of the clamping piece 32, the two leg portions 28, 29 and the cage yoke 31 is limited. The cage yoke 31 has a threaded through bore through which a threaded pin 14 is connected to a clamping plate 33 which is arranged in the cable space. By turning the threaded pin 14, the clamping plate 33 can be moved in the direction of the clamping piece 32 or from this. The two leg portions 28, 29 have at their end facing away from the bottom portion 30 two cranked sections 34, 35 on. These headed portions 34, 35 are formed such that the distance between them is slightly smaller than the corresponding extent of the cage yoke 31, so that in the example in FIG. 1 shown position the cage yoke 31 can not be removed upwards from the cage bracket 27 without the two legs are bent outward. Furthermore, both legs 28, 29 have an approximately U-shaped recess which surrounds a corresponding tongue section 36. This tongue portion 36 has been bent in the production something in the direction of the cage cell, so that in the example in FIG. 1 shown position the cage yoke 31 is supported on both sides of the corresponding tongue portion 36. To remove the cage yoke 31, either the leg sections 28, 29 have to be slightly bent apart or the cage yoke 31 has to be pushed forward (or rearward).

Deutlich zu erkennen ist insbesondere in den Figuren 1 und 6, dass jeder der Klemmaufbauten 7, 8, 9 mit Hilfe eines Schubeinsatzes 37, 38, 39 an dem Gehäuse 4 der Wandlereinrichtung befestigt ist. Alle Schubeinsätze 37, 38, 39 sind identisch ausgestaltet, so dass die konkrete Ausgestaltung nun bezugnehmend auf Figur 6 anhand des Schubeinsatzes 37 beschrieben wird.It can be clearly seen in particular in the FIGS. 1 and 6 in that each of the clamping assemblies 7, 8, 9 is fixed to the housing 4 of the transducer device by means of a push insert 37, 38, 39. All thrust inserts 37, 38, 39 are designed identically, so that the specific embodiment now with reference to FIG. 6 will be described with reference to the push insert 37.

Der Schubeinsatz 37 weist eine Ausnehmung 40 auf, in die der Bodenabschnitt 30 des Klemmaufbaus 27 eingesetzt werden kann. Die Ausnehmung 40 ist von seitlichen Wangen 41, 42 sowie einer vorderen Anschlagfläche 43 begrenzt. Weiterhin weist der Schubeinsatz zwei Rastelemente (in den Figuren nicht dargestellt) auf, die elastische verformbar sind.The push insert 37 has a recess 40 into which the bottom portion 30 of the clamping structure 27 can be inserted. The recess 40 is bounded by lateral cheeks 41, 42 and a front stop surface 43. Furthermore, the push insert on two locking elements (not shown in the figures), which are elastically deformable.

Alternativ zur Aufnahme des in den Figuren dargestellten Klemmaufbaus 27 kann der Schubeinsatz 38 eine Schraubenmutter (nicht dargestellt) aufnehmen, die es ermöglicht, einen Polschuh mit den Primärleitern 10, 11, 12 zu verschrauben. Dazu weist der Schubeinsatz 38 eine Ausnehmung 44 zur Aufnahme einer Schraubenmutter auf.As an alternative to receiving the clamping structure 27 shown in the figures, the push insert 38 can receive a nut (not shown) which makes it possible to screw a pole piece to the primary conductors 10, 11, 12. For this purpose, the push insert 38 has a recess 44 for receiving a nut.

Aus einer Zusammenschau der Figuren 4 und 5, die im Wesentlichen den gleichen Maßstab aufweisen, wird deutlich, wie die erfindungsgemäße Anordnung der einzelnen Stromwandler 1, 2, 3 eine kompakte Bauweise der Stromwandlereinheit mit den drei Stromwandlern 1, 2, 3 ermöglicht. Die Wandlereinheit weist eine vergleichsweise geringe Breite und Höhe auf. Dazu sind die beiden Stromwandler 1, 2, welche zu den beiden Primärleitern 10, 11 gehören, in der gleichen Höhe angeordnet, d. h. die Mittelpunkte ihrer ringförmigen Kerne liegen in der Ebene, in welcher auch die Primärleiter 10, 11 liegen. Demgegenüber ist der dritte Wandler in einer anderen Ebene angeordnet, sowohl sein Primärleiter 12, sein Kern 18 als auch sein Sekundärleiter 19 liegen oberhalb der beiden anderen Stromwandler 1, 2. Diese Anordnung der Wandler übereinander ermöglicht eine geringe Breite der erfindungsgemäßen Stromwandlereinheit, so dass diese im Abgangsbereich einer herkömmlichen Sicherungslastschaltleiste aufnehmbar ist.From a synopsis of FIGS. 4 and 5 , which have substantially the same scale, it becomes clear how the inventive arrangement of the individual current transformers 1, 2, 3 allows a compact design of the current transformer unit with the three current transformers 1, 2, 3. The converter unit has a comparatively small width and height. For this purpose, the two current transformers 1, 2, which belong to the two primary conductors 10, 11, arranged at the same height, ie the centers of their annular cores lie in the plane in which the primary conductors 10, 11 are located. In contrast, the third transducer is arranged in a different plane, both its primary conductor 12, its core 18 and its secondary conductor 19 are above the other two current transformers 1, 2. This arrangement of the converter above each other allows a small width of the current transformer unit according to the invention, so that these in the outgoing area of a conventional fuse load switch bar is receivable.

Darüber hinaus ist der dritte Stromwandler 3 in der Betrachtungsrichtung beispielsweise von Figur 1 hinter den beiden anderen Stromwandlern 1, 2 angeordnet. D. h. die Kerne 16 und 18 bzw. 17 und 18 der Stromwandler 1 und 3 bzw. 2 und 3 überlappen einander in einer Richtung parallel zu den Primärleitern 10, 11, 12 räumlich nicht. Auf diese Weise kann eine erheblich engere Packung der Stormwandler 1, 2 und 3 erreicht werden, d. h. die Primärleiter 10 und 12 bzw. 11 und 12 weisen einen deutlich geringeren Abstand voneinander auf, als dies der Fall wäre, wenn der dritte Wandler 3 unmittelbar über den beiden Wandlern 1 und 2 angeordnet wäre.In addition, the third current transformer 3 in the viewing direction, for example, of FIG. 1 behind the other two current transformers 1, 2 arranged. Ie. the cores 16 and 18 or 17 and 18 of the current transformers 1 and 3 or 2 and 3 do not overlap one another spatially in a direction parallel to the primary conductors 10, 11, 12. In this way, a much narrower packing of the Storm converter 1, 2 and 3 can be achieved, ie, the primary conductors 10 and 12 or 11 and 12 have a much smaller distance from each other, as would be the case if the third converter 3 directly over the two transducers 1 and 2 would be arranged.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1, 2, 31, 2, 3
StromwandlerPower converter
44
erstes Gehäuseteilfirst housing part
55
zweites Gehäuseteilsecond housing part
66
drittes Gehäuseteilthird housing part
7, 8, 97, 8, 9
Klemmaufbauterminal building
10, 11, 1210, 11, 12
Primärleiterprimary conductor
13, 14, 1513, 14, 15
GewindestiftSet screw
16, 17, 1816, 17, 18
metallischer Kernmetallic core
19, 20, 2119, 20, 21
Sekundärleitersecondary conductor
22,2322.23
Messanschlussmeasuring connection
24, 25, 2624, 25, 26
Durchbohrungperforation
2727
Käfigbügelroll cage
28, 2928, 29
Schenkelabschnittleg portion
3030
Bodenabschnittbottom section
3131
KäfigjochKäfigjoch
3232
Klemmstückclamp
3333
Klemmplatteclamp
34, 3534, 35
gekröpfter Abschnittcranked section
3636
Zungenabschnitttongue portion
37, 38, 3937, 38, 39
Schubeinsatzrailable
4040
Ausnehmungrecess
41, 4241, 42
seitliche Wangelateral cheek
4343
vordere Anschlagsflächefront stop surface
4444
Ausnehmung zur Aufnahme einer SchraubenmutterRecess for receiving a nut

Claims (14)

Stromwandlereinheit für eine Sicherungslastleiste mit
drei Stromwandlern (1, 2, 3) zur Erfassung eines durch die Sicherungslastleiste fließenden Stroms,
wobei jeder der Stromwandler (1, 2, 3) je einen Primärleiter (10, 11, 12), einen den Primärleiter (10, 11, 12) ringförmig umgebenden Kern (16, 17, 18) und einen den Kern spulenförmig umgebenden Sekundärleiter (19, 20, 21) aufweist,
wobei die Enden des Sekundärleiters (19, 20, 21) je einen Meßanschluß (22, 23) aufweisen, und
wobei der Primärleiter (10, 11, 12) ein erstes mit einem Abgangsanschluss der Sicherungslastleiste verbindbares Ende und ein zweites mit einem Anschlusskabel verbindbares Ende aufweist.Current transformer unit for a fuse load bar with
three current transformers (1, 2, 3) for detecting a current flowing through the fuse load bar,
each of the current transformers (1, 2, 3) each having a primary conductor (10, 11, 12), a core surrounding the primary conductor (10, 11, 12) annular core (16, 17, 18) and a secondary conductor surrounding the core ( 19, 20, 21),
wherein the ends of the secondary conductor (19, 20, 21) each have a measuring terminal (22, 23), and
wherein the primary conductor (10, 11, 12) has a first connectable to an outgoing terminal of the fuse load bar end and a second connectable with a connecting cable end. Stromwandlereinheit nach Anspruch 1, dadurch gekennzeichnet, dass zwei der Primärleiter (10, 11) in einer Ebene angeordnet sind, während der dritte Primärleiter (12) einen Abstand zu dieser Ebene aufweist.Current transformer unit according to claim 1, characterized in that two of the primary conductors (10, 11) are arranged in a plane, while the third primary conductor (12) has a distance to this plane. Stromwandlereinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kerne (16, 17, 18) der drei Stromwandler (1, 2, 3) so angeordnet sind, dass zumindest zwei Kerne (16, 18 bzw. 17, 18) in einer Richtung parallel zu den Primärleitern (10, 11, 12) keinen räumlichen Überlapp aufweisen.Current transformer unit according to claim 1 or 2, characterized in that the cores (16, 17, 18) of the three current transformers (1, 2, 3) are arranged so that at least two cores (16, 18 and 17, 18) in one Direction parallel to the primary conductors (10, 11, 12) have no spatial overlap. Stromwandlereinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Primärleiter (10, 11, 12) als Leiterblech ausgeführt ist.Current transformer unit according to one of claims 1 to 3, characterized in that the primary conductor (10, 11, 12) is designed as a conductor plate. Stromwandlereinheit nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Primärleiter (10, 11, 12) an seinem ersten Ende eine Durchbohrung (24, 25, 26) zum Verschrauben des Primärleiters (10, 11, 12) mit einem Abgangsanschluß einer Sicherungslastleiste aufweist.Current transformer unit according to one of claims 1 to 4, characterized in that the primary conductor (10, 11, 12) at its first end a through bore (24, 25, 26) for screwing the primary conductor (10, 11, 12) with a outgoing terminal of a Has fuse load bar. Stromwandlereinheit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Primärleiter (10, 11, 12) an seinem zweiten Ende eine Durchbohrung (24, 25, 26) zum Verschrauben des Primärleiters (10, 11, 12) mit einem Kabelschuh eines Anschlusskabels aufweist.Current transformer unit according to one of claims 1 to 5, characterized in that the primary conductor (10, 11, 12) at its second end a through bore (24, 25, 26) for screwing the primary conductor (10, 11, 12) with a cable lug of a Connecting cable has. Stromwandlereinheit nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Primärleiter (10, 11, 12) an seinem zweiten Ende einen Klemmaufbau (7, 8, 9) zur Aufnahme eines Anschlusskabels aufweist.Current transformer unit according to one of claims 1 to 6, characterized in that the primary conductor (10, 11, 12) has at its second end a clamping structure (7, 8, 9) for receiving a connecting cable. Stromwandlereinheit nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Stromwandlereinheit ein Gehäuse (4, 5, 6) aufweist, wobei in dem Gehäuse (4, 5, 6) eine einem Primärleiter (10, 11, 12) zugeordnete Ausnehmung (40) vorgesehen ist, in die ein Schubeinsatz (37, 38, 39) einschiebbar ist, wobei der Schubeinsatz (37, 38, 39) eine Ausnehmung (40) zur Aufnahme eines Anschlusselements aufweist.Current transformer unit according to one of claims 1 to 7, characterized in that the current transformer unit has a housing (4, 5, 6), wherein in the housing (4, 5, 6) has a primary conductor (10, 11, 12) associated with recess ( 40) is provided, into which a push insert (37, 38, 39) can be inserted, wherein the push insert (37, 38, 39) has a recess (40) for receiving a connection element. Stromwandlereinheit nach Anspruch 8, dadurch gekennzeichnet, dass der Schubeinsatz (37, 38, 39) und/oder die Ausnehmung (40) in dem Gehäuse (4, 5, 6) der Stromwandlereinheit ein bewegliches oder verformbares Rastelement aufweist, und die Ausnehmung (40) in dem Gehäuse (4, 5, 6) der Stromwandlereinheit und/oder der Schubeinsatz (37, 38, 39) eine Vertiefung zur Aufnahme des Rastelementes aufweist.Current transformer unit according to claim 8, characterized in that the push insert (37, 38, 39) and / or the recess (40) in the housing (4, 5, 6) of the current transformer unit has a movable or deformable latching element, and the recess (40 ) in the housing (4, 5, 6) of the current transformer unit and / or the push insert (37, 38, 39) has a recess for receiving the locking element. Stromwandlereinheit nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Anschlusselement ein Klemmaufbau (7, 8, 9) ist.Current transformer unit according to claim 8 or 9, characterized in that the connection element is a clamping structure (7, 8, 9). Stromwandlereinheit nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Anschlusselement eine Schraubenmutter ist.Current transformer unit according to claim 8 or 9, characterized in that the connecting element is a nut. Stromwandlereinheit nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass jeder der drei Stromwandler so ausgestaltet ist, dass er für eine durch seinen Primärleiter fließende Leistung von mehr als 5 VA geeignet ist.Current transformer unit according to one of claims 1 to 11, characterized in that each of the three current transformers is designed so that it is suitable for flowing through its primary conductor power of more than 5 VA. Sicherungslastleiste mit einem Stromwandlerelement nach einem der Ansprüche 1 bis 12.Fuse load bar with a current transformer element according to one of claims 1 to 12. Sicherungslastleiste nach Anspruch 13, dadurch gekennzeichnet, dass sie eine Sicherungslastschaltleiste ist, die
ein Gehäuseunterteil, in dem drei elektrische Sammelschienenanschlüsse, die jeweils mit einer ersten Sicherungsaufnahme verbunden sind, und drei Abgangsanschlüsse, die jeweils mit einer zweiten Sicherungsaufnahme verbunden sind, angeordnet sind,
ein Gehäuseoberteil und
einen gegenüber dem Gehäuseoberteil verschwenkbar angeordneten Schaltdeckel aufweist, der mindestens eine Halteeinrichtung für einen Sicherungseinsatz aufweist,
wobei jeweils ein Primärleiter (10, 11, 12) der Stromwandlereinheit mit einem Abgangsanschluss der Sicherungslastschaltleiste verbunden ist.Fuse load bar according to claim 13, characterized in that it is a fuse load switch bar, the
a housing bottom, in which three electrical busbar terminals, which are each connected to a first fuse holder, and three outgoing terminals, which are each connected to a second fuse holder, are arranged,
an upper housing part and
a switch cover which is pivotably arranged in relation to the housing upper part and has at least one securing device for a fuse link,
wherein in each case a primary conductor (10, 11, 12) of the current transformer unit is connected to an outgoing terminal of the fuse load switching strip.
EP10164150A 2009-06-04 2010-05-27 Electricity converter unit Revoked EP2259284B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10164150T PL2259284T3 (en) 2009-06-04 2010-05-27 Electricity converter unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009026742A DE102009026742A1 (en) 2009-06-04 2009-06-04 Current transformer unit

Publications (3)

Publication Number Publication Date
EP2259284A2 true EP2259284A2 (en) 2010-12-08
EP2259284A3 EP2259284A3 (en) 2011-11-02
EP2259284B1 EP2259284B1 (en) 2012-05-09

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ID=42685676

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EP (1) EP2259284B1 (en)
AT (1) ATE557412T1 (en)
DE (2) DE102009026742A1 (en)
ES (1) ES2386763T3 (en)
PL (1) PL2259284T3 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2779200A1 (en) 2013-03-14 2014-09-17 Pronutec, S.A.U. Measurement module for a fuse block base
EP2555003B1 (en) * 2011-08-05 2017-01-04 EFEN GmbH Current transducer and load separator with same
CN107636788A (en) * 2015-04-09 2018-01-26 埃芬有限责任公司 Converter system and the load break switch with converter system
CN109564841A (en) * 2016-05-31 2019-04-02 普洛纽泰克独资有限公司 For the voltage tap head system of Fuse box matrix, Fuse box matrix and the measurement module for combining the system
DE102017011373A1 (en) 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Measuring and control electronics for low-voltage switchgear
DE102017011374A1 (en) 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Protective device for low-voltage systems with integrated measuring electronics
CN113196440A (en) * 2018-12-20 2021-07-30 西门子股份公司 Fuse cutout with integrated measuring function and cutout
DE102022104394A1 (en) 2022-02-24 2023-08-24 EBG innolab GmbH Electrical protection device with measuring module
DE102022113758A1 (en) 2022-05-31 2023-11-30 EBG innolab GmbH Electrical protection device with measuring module
EP4343799A1 (en) 2022-09-22 2024-03-27 Hager-Electro Sas Current transformation module for an electrical switchgear of the nh fuse-disconnector type

Families Citing this family (4)

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DE102010028679B4 (en) 2010-05-06 2020-08-06 Wöhner GmbH & Co. KG Elektrotechnische Systeme Fuse holder, in particular for junction boxes of photovoltaic systems
EP2985779B1 (en) 2014-08-13 2021-03-31 Pronutec, S.A.U. Fuseholder base
DE202017007671U1 (en) 2017-10-03 2024-02-07 Gorlan Team, S.L.U. Cable duct, fuse base and monitoring system
PT3467865T (en) 2017-10-03 2024-02-20 Gorlan Team Slu Cable duct, fuse block and monitoring system

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DE29807732U1 (en) * 1998-04-24 1998-07-02 Siemens AG, 80333 München Low-voltage circuit breaker with a housing having a front wall and a rear wall
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2555003B1 (en) * 2011-08-05 2017-01-04 EFEN GmbH Current transducer and load separator with same
WO2014140405A1 (en) 2013-03-14 2014-09-18 Pronutec, S.A.U. Measurement module for a fuse-holder base
CN105264631A (en) * 2013-03-14 2016-01-20 普洛纽泰克独资有限公司 Measurement module for a fuse-holder base
EP2779200A1 (en) 2013-03-14 2014-09-17 Pronutec, S.A.U. Measurement module for a fuse block base
CN107636788A (en) * 2015-04-09 2018-01-26 埃芬有限责任公司 Converter system and the load break switch with converter system
CN109564841B (en) * 2016-05-31 2020-05-05 普洛纽泰克独资有限公司 Voltage tap system for fuse box substrate, fuse box substrate and measurement module incorporating the system
CN109564841A (en) * 2016-05-31 2019-04-02 普洛纽泰克独资有限公司 For the voltage tap head system of Fuse box matrix, Fuse box matrix and the measurement module for combining the system
DE102017011373A1 (en) 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Measuring and control electronics for low-voltage switchgear
DE102017011374A1 (en) 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Protective device for low-voltage systems with integrated measuring electronics
CN113196440A (en) * 2018-12-20 2021-07-30 西门子股份公司 Fuse cutout with integrated measuring function and cutout
DE102022104394A1 (en) 2022-02-24 2023-08-24 EBG innolab GmbH Electrical protection device with measuring module
WO2023161250A1 (en) 2022-02-24 2023-08-31 EBG innolab GmbH Electric protection device comprising a measuring module
DE102022113758A1 (en) 2022-05-31 2023-11-30 EBG innolab GmbH Electrical protection device with measuring module
EP4343799A1 (en) 2022-09-22 2024-03-27 Hager-Electro Sas Current transformation module for an electrical switchgear of the nh fuse-disconnector type
FR3140202A1 (en) 2022-09-22 2024-03-29 Hager-Electro Sas Current transformation module for electrical switching equipment of the NH fuse disconnector type

Also Published As

Publication number Publication date
DE202010017635U1 (en) 2012-03-27
PL2259284T3 (en) 2012-09-28
EP2259284B1 (en) 2012-05-09
EP2259284A3 (en) 2011-11-02
DE102009026742A1 (en) 2010-12-09
ES2386763T3 (en) 2012-08-29
ATE557412T1 (en) 2012-05-15

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