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EP1089309A2 - Electronic overload relay - Google Patents

Electronic overload relay Download PDF

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Publication number
EP1089309A2
EP1089309A2 EP00121152A EP00121152A EP1089309A2 EP 1089309 A2 EP1089309 A2 EP 1089309A2 EP 00121152 A EP00121152 A EP 00121152A EP 00121152 A EP00121152 A EP 00121152A EP 1089309 A2 EP1089309 A2 EP 1089309A2
Authority
EP
European Patent Office
Prior art keywords
overload relay
relay according
circuit board
cover
primary
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
EP00121152A
Other languages
German (de)
French (fr)
Other versions
EP1089309A3 (en
EP1089309B1 (en
Inventor
Georgi Dipl.-Ing. Cwetanski
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.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP1089309A2 publication Critical patent/EP1089309A2/en
Publication of EP1089309A3 publication Critical patent/EP1089309A3/en
Application granted granted Critical
Publication of EP1089309B1 publication Critical patent/EP1089309B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers

Definitions

  • the invention relates to an electronic overload relay for an electrical Installation device according to the preamble of claim 1.
  • the usually known thermal overcurrent relays have one of the number of phases to be protected corresponding to the number of bimetallic metals over a Slider act on a switching mechanism so that in the event of an overcurrent Leads z. B. be switched off to an engine.
  • overload relays have recently been working on an electronic basis. You lead the Current to the motor through current sensors that detect the overcurrent; over a suitable evaluation circuit, switching contacts are controlled with which For example, a contactor is activated to switch off the phase conductors.
  • the object of the invention is an electronic overload relay of the aforementioned To create a type that is easy to manufacture and assemble.
  • one leg of the core passes through the primary winding and the Secondary winding-carrying bobbin, with a first on the bobbin Space compartment for the secondary winding between two walls and a second one Space formed between two further walls for the primary winding is what forms a converter.
  • connecting lugs are provided which have two parallel flags projecting in the same direction, one of which is used for mechanical fixation in a receiving pocket on the bobbin and the another is electrically conductively connected to the primary winding in the second room compartment.
  • the compartments can be arranged side by side and by only one Be separated from each other.
  • the walls are coil former flanges.
  • the coil formers are on one PCB attached.
  • the converter is arranged on one side of the circuit board; on the other side there is a cover that is used to guide the primary conductor is provided with slits.
  • the electromagnet system is from a cover, the openings at least for the connecting straps has, so that connecting lines to these outside the cover can be connected.
  • the cover carries fixed contact pieces with movable contact pieces on one the rocker switch located inside the cover interact in two stable positions is adjustable, in which they with different fixed contact pieces can be combined in accordance with the state in the overload relay.
  • control coils with a yoke on the circuit board attached with two yoke legs, the yoke legs in the same direction as project the connection lugs.
  • Permanent magnets can be attached to the rocker, which in the assembled state in Area of the yoke legs are so that over the yoke legs and the control coils the rocker and thus the movable contact pieces can be driven.
  • the circuit board with the converter and Control coils and possibly other electronic components on the one hand and the Cover with the rocker switch and the fixed and movable contact pieces on the other hand each form a preassembled unit that is easy to assemble can be nested.
  • There is an electrically conductive connection with Corresponding operation between the two units is not necessary because an inductive coupling is produced between the two.
  • Fig. 1 shows a side view of a first unit for an electronic Overcurrent relay.
  • Transducers 11 are attached to a printed circuit board 10, for example by means of a screw connection, not shown. From Fig. 2 it can be seen that the converter from a number of three corresponding to the number of phase conductors Transducer elements 12, 13, 14 is composed.
  • a coil body 50, 51 and 52 is provided, which is a rectangular one Coil tube 53, 54 and 55 has that at both ends with a radial flange 56 or 57, 58, 59, 60 and 61 is limited, whereby a first Space 62, 63 and 64 is formed which, as can be seen from FIGS. 1 and 2, respectively carries a secondary winding 65, 66 and 67.
  • the coil tube 53, 54 and 55 sits over the flange 57, 59, 61 as well 5 can be seen at the front in FIG. 5, with a Coil tube extension 68; the free end of the coil tube extension 68 is from a further flange 69, 70, 71 delimited, wherein between the flanges 57, 69, 59, 70, 61, 71 a second space 72, 73, 74 is formed, the primary winding 75, 76 and 77 records.
  • a rectangular core 78, 79, 80 which consists of several, is assigned to each partial converter Sheet metal fins is assembled and forms a rectangular ring in cross section, with its invisible leg through the coil tube 68/53, 54 and 55 passed through. So that the primary winding 75, 76 and 77 of one leg of the core, as well as the secondary windings 65, 66 and 67.
  • Pockets 81, 82 and 83 are also on the bobbins 50, 51 and 52 Shaped openings 84, 85 and 86, which are used to receive terminal lugs 87, 88 and 89 serve.
  • Each of the connecting lugs 87 to 89 has a cranked one Projection 90 and a flat projection 91, which one another in supervision Form a two-pronged fork.
  • the projection 91 or leg 91 of all three Connection lugs 87 to 89 are in the receiving pocket 84, 85 and 86 for Inserted bracket and on the corresponding terminal lugs 90 is one End of primary windings 75 to 77 connected.
  • the converter arrangement 12, 13 and 14 thus produced is then shown in FIG Way attached to the circuit board 10, preferably screwed tight, the other End 15 of the primary winding with an L-shaped plug lug 16, in each case for all 3 Phases, electrically connected. In this way, the current flows through the Connector lugs 16, the primary windings 75 to 77 to the connection lugs 87 to 89.
  • the legs 19 and 20 On the side of the printed circuit board 10, which carries the transducers 12 to 14, there are two Control coils 17 and 18 attached, the legs 19 and 20 one not closer embrace the illustrated yokes.
  • the coils 17 and 18 are not shown in detail Coupled with the secondary windings 65, 66 and 67, such that over the Coils 17 and 18, the legs 19 and 20 are magnetized.
  • FIG. 3 shows an insight into a housing 24 in which a rocker switch 25 is located, on which two contact bridges 26 and 27 are arranged, the fixed contact pieces 28 and 29 or 30 and 31 can bridge.
  • the rocker switch 25 to their Center axis M is pivoted to the right, the contact pieces 30 and 31 of the contact bridge 27 closed or electrically connected, whereas the Fixed contact pieces 28 and 29 are not connected to each other. Swing it Contact rocker 25 in the other direction to the left, then the moves away Contact bridge 27 from the contact pieces 30 and 31 and the two contact pieces 28 and 29 are connected to one another in an electrically conductive manner by means of the contact bridge 26.
  • the fixed contact pieces 28 to 31 pass through an end wall 32 and end in control terminal lugs 33, each fixed contact piece 28 to 31 each a control terminal lug 33 is assigned.
  • An inner guide wall runs parallel to the intermediate wall 38 39. Between the guide walls 36 and the inner guide wall 41 and the Ledge 39 and the guide wall 37, the inner guide wall 41 and the ledge 40 guide spaces 42 and 43 are formed.
  • a further intermediate wall 44 is located below the intermediate wall 38; between openings 45, 46 and 47 are provided in the two intermediate walls 38 and 44.
  • the two units are joined together in such a way that the unit according to FIGS. 1 and 2 in the direction of arrow P with the connecting lugs 87 to 89 and the yoke legs 19 and 20 is inserted into the cover 24, the connecting lugs 87 to 89 reach through the recesses 45 to 47 and the yoke legs 19, 20 in the Leadership rooms 42, 43 are introduced. It can be seen from this that an electric conductive connection between the two units is not present.
  • a cover plate is on the side of the Printed circuit board 10 attached, on which the connector tabs 16 project. After installation this cover plate, the overcurrent relay according to FIGS. 1 to 5 is fully assembled.
  • Fig. 6 shows a supplement to the electromagnetic unit: on the Printed circuit board 10 opposite side of the bobbin 50, 51, 52 is one another circuit board 100 attached, on the additional electronic components, here a Capacitor 101 are attached.
  • the circuit board 100 covers the spaces for the Secondary windings. This will save even more space Simplification of assembly is achieved insofar as the capacitor 101 is in the free space 99 can engage in the cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Linear Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

The overload relay has a primary winding or conductor and a secondary winding or core and a rectangular core for each phase. One limb of the core engages a core body which carries the primary and secondary windings. A first chamber part for the secondary winding is formed on the coil body between two walls. A second area is formed between two other walls for the primary winding. The chamber parts form respective transformers such that connector tongues (87,88,89) are provided. These tongues have parallel flags extending in the same direction. One of these flags is for mechanically fixing in a recess to the coil body. The other is electrically connected in the second chamber to the primary winding.

Description

Die Erfindung betrifft ein elektronisches Überlastrelais für ein elektrisches Installationsgerät gemäß dem Oberbegriff des Anspruches 1.The invention relates to an electronic overload relay for an electrical Installation device according to the preamble of claim 1.

Die üblicherweise bekannten thermischen Überstromrelais besitzen eine der Anzahl der abzusichernden Phasen entprechend der Anzahl von Thermobimetallen, die über einen Schieber auf einen Schaltmechanismus einwirken, damit im Falle eines Überstroms die Zuleitungen z. B. zu einem Motor abgeschaltet werden.The usually known thermal overcurrent relays have one of the number of phases to be protected corresponding to the number of bimetallic metals over a Slider act on a switching mechanism so that in the event of an overcurrent Leads z. B. be switched off to an engine.

Neuerdings arbeiten derartige Überlastrelais auf elektronischer Basis. Man leitet den Strom zum Motor durch Stromsensoren, die den Überstrom detektieren; über eine geeignete Auswerteschaltung werden Schaltkontakte angesteuert, mit denen beispielsweise ein Schütz angesteuert wird, um die Phasenleiter abzuschalten.Such overload relays have recently been working on an electronic basis. You lead the Current to the motor through current sensors that detect the overcurrent; over a suitable evaluation circuit, switching contacts are controlled with which For example, a contactor is activated to switch off the phase conductors.

Aufgabe der Erfindung ist es, ein elektronisches Überlastrelais der eingangs genannten Art zu schaffen, das einfach hergestellt und montiert werden kann.The object of the invention is an electronic overload relay of the aforementioned To create a type that is easy to manufacture and assemble.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.This object is achieved by the features of claim 1 .

Danach durchgreift ein Schenkel des Kerns einen die Primärwicklung und die Sekundärwicklung tragenden Spulenkörper, wobei am Spulenkörper ein erstes Raumabteil für die Sekundärwicklung zwischen zwei Wandungen und ein zweites Raumabteil zwischen zwei weiteren Wandungen für die Primärwicklung angeformt ist, wodurch ein Wandler gebildet wird. Weiterhin sind Anschlußlaschen vorgesehen, die zwei in gleiche Richtung vorspringende parallele Fahnen aufweisen, von denen eine zur mechanischen Fixierung in eine Aufnahmetasche am Spulenkörper dient und die andere im zweiten Raumabteil mit der Primärwicklung elektrisch leitend verbunden ist. Dabei können die Raumabteile nebeneinander angeordnet und durch nur eine Wandung voneinander getrennt sein. Die Wandungen sind dabei Spulenkörperflansche.Then one leg of the core passes through the primary winding and the Secondary winding-carrying bobbin, with a first on the bobbin Space compartment for the secondary winding between two walls and a second one Space formed between two further walls for the primary winding is what forms a converter. In addition, connecting lugs are provided which have two parallel flags projecting in the same direction, one of which is used for mechanical fixation in a receiving pocket on the bobbin and the another is electrically conductively connected to the primary winding in the second room compartment. The compartments can be arranged side by side and by only one Be separated from each other. The walls are coil former flanges.

Gemäß einer weiteren Ausgestaltung der Erfindung sind die Spulenkörper an einer Leiterplatte befestigt. Dabei ist der Wandler auf einer Seite der Leiterplatte angeordnet; auf der anderen Seite befindet sich eine Abdeckung, die zur Führung der Primärleiter mit Schlitzen versehen ist.According to a further embodiment of the invention, the coil formers are on one PCB attached. The converter is arranged on one side of the circuit board; on the other side there is a cover that is used to guide the primary conductor is provided with slits.

Gemäß einer weiteren Ausgestaltung der Erfindung ist das Elektromagnetsystem von einer Abdeckhaube abgedeckt, die Durchbrüche wenigstens für die Anschlußlaschen aufweist, so daß an diesen außerhalb der Abdeckhaube Anschlußleitungen anschließbar sind.According to a further embodiment of the invention, the electromagnet system is from a cover, the openings at least for the connecting straps has, so that connecting lines to these outside the cover can be connected.

Die Abdeckhaube trägt Festkontaktstücke, die mit beweglichen Kontaktstücken an einer innerhalb der Abdeckhaube befindlichen Schaltwippe zusammenwirken, die in zwei stabile Stellungen verstellbar ist, in denen sie mit unterschiedlichen Festkontaktstücken entsprechend dem Zustand im Überlastrelais kombinierbar sind.The cover carries fixed contact pieces with movable contact pieces on one the rocker switch located inside the cover interact in two stable positions is adjustable, in which they with different fixed contact pieces can be combined in accordance with the state in the overload relay.

Zur Ansteuerung der Schaltwippe sind auf der Leiterplatte Steuerspulen mit einem Joch mit zwei Jochschenkeln befestigt, wobei die Jochschenkel in die gleiche Richtung wie die Anschlußfahnen vorspringen.To control the rocker switch there are control coils with a yoke on the circuit board attached with two yoke legs, the yoke legs in the same direction as project the connection lugs.

An der Wippe können dabei Dauermagnete befestigt sein, die im montierten Zustand im Bereich der Jochschenkel liegen, so daß über die Jochschenkel und die Steuerspulen die Wippe und damit die beweglichen Kontaktstücke antreibbar sind.Permanent magnets can be attached to the rocker, which in the assembled state in Area of the yoke legs are so that over the yoke legs and the control coils the rocker and thus the movable contact pieces can be driven.

Mit dieser Ausgestaltung können die Leiterplatte mit dem Wandler und den Steuerspulen und gegebenenfalls weiteren elektronischen Bauteile einerseits und die Abdeckhaube mit der Schaltwippe und den festen und beweglichen Kontaktstücken andererseits je eine vormontierbare Einheit bilden, die zur Montage einfach ineinandergesteckt werden können. Dabei ist eine elektrisch leitende Verbindung mit entsprechendem Arbeitsgang zwischen den beiden Einheiten nicht erforderlich, da zwischen beiden eine induktive Kupplung hergestellt wird.With this configuration, the circuit board with the converter and Control coils and possibly other electronic components on the one hand and the Cover with the rocker switch and the fixed and movable contact pieces on the other hand, each form a preassembled unit that is easy to assemble can be nested. There is an electrically conductive connection with Corresponding operation between the two units is not necessary because an inductive coupling is produced between the two.

Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements and improvements of the invention are the see further subclaims.

Anhand der Zeichnung, in der einige Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.Using the drawing, in which some embodiments of the invention are shown are, the invention and other advantageous embodiments and Improvements of the invention are explained and described in more detail.

Es zeigen

Fig. 1:
eine Seitenansicht auf eine erste Einheit mit Leiterplatte,
Fig. 2:
eine aufsichtsgemäße Zeilrichtung II-II der Fig. 1,
Fig. 3:
eine Einsicht in eine zweite Einheit,
Fig. 4:
eine Schnittansicht gemäß Schnittlinie IV-IV,
Fig. 5:
die Wandlereinheit, teilweise gezeichnet, vor der Endmontage, und
Fig. 6:
eine ergänzte Version der Wandlereinheit.
Show it
Fig. 1:
a side view of a first unit with circuit board,
Fig. 2:
2 shows a regulatory line direction II-II of FIG. 1,
Fig. 3:
an insight into a second unit,
Fig. 4:
2 shows a sectional view according to section line IV-IV,
Fig. 5:
the converter unit, partially drawn, before final assembly, and
Fig. 6:
an expanded version of the converter unit.

Es sei Bezug genommen auf die Fig. 1.Reference is made to FIG. 1.

Die Fig. 1 zeigt eine Seitenansicht einer ersten Einheit für ein elektronisches Überstromrelais. Auf einer Leiterplatte 10 sind Wandler 11 befestigt, beispielsweise mittels einer nicht näher dargestellten Schraubverbindung. Aus Fig. 2 ist ersichtlich, daß der Wandler aus einer der Anzahl der Phasenleiter entsprechenden Anzahl dreier Wandlerelemente 12, 13, 14 zusammengesetzt ist.Fig. 1 shows a side view of a first unit for an electronic Overcurrent relay. Transducers 11 are attached to a printed circuit board 10, for example by means of a screw connection, not shown. From Fig. 2 it can be seen that the converter from a number of three corresponding to the number of phase conductors Transducer elements 12, 13, 14 is composed.

Es sei nun Bezug genommen auf die Fig. 5.Reference is now made to FIG. 5.

Für jeden Wandler ist ein Spulenkörper 50, 51 und 52 vorgesehen, der ein rechteckiges Spulenrohr 53, 54 und 55 besitzt, das an seinen beiden Enden jeweils mit einem radialen Flansch 56 bzw. 57, 58, 59, 60 und 61 begrenzt ist, wodurch jeweils ein erster Raum 62, 63 und 64 gebildet ist, der, wie aus den Fig. 1 und 2 ersichtlich ist, jeweils eine Sekundärwicklung 65, 66 und 67 trägt.For each transducer, a coil body 50, 51 and 52 is provided, which is a rectangular one Coil tube 53, 54 and 55 has that at both ends with a radial flange 56 or 57, 58, 59, 60 and 61 is limited, whereby a first Space 62, 63 and 64 is formed which, as can be seen from FIGS. 1 and 2, respectively carries a secondary winding 65, 66 and 67.

Das Spulenrohr 53, 54 und 55 setzt sich über den Flansch 57, 59, 61 hinaus, wie an dem in der Fig. 5 vorne sichtbare Spulenkörper 50 zu sehen ist, mit einer Spulenrohrverlängerung 68; das freie Ende der Spulenrohrverlängerung 68 ist von einem weiteren Flansch 69, 70, 71 begrenzt, wobei zwischen den Flanschen 57, 69, 59, 70, 61, 71 ein zweiter Raum 72, 73, 74 gebildet ist, der eine Primärwicklung 75, 76 und 77 aufnimmt.The coil tube 53, 54 and 55 sits over the flange 57, 59, 61 as well 5 can be seen at the front in FIG. 5, with a Coil tube extension 68; the free end of the coil tube extension 68 is from a further flange 69, 70, 71 delimited, wherein between the flanges 57, 69, 59, 70, 61, 71 a second space 72, 73, 74 is formed, the primary winding 75, 76 and 77 records.

Jedem Teilwandler ist ein rechteckiger Kern 78, 79, 80 zugeordnet, der aus mehreren Blechlamellen zusammengesetzt ist und im Querschnitt einen rechteckigen Ring bildet, mit seinem nicht sichtbaren Schenkel durch das Spulenrohr 68/53, 54 und 55 hindurchgeführt. Damit wird die Primärwicklung 75, 76 und 77 von dem einen Schenkel des Kerns durchgriffen, ebenso wie die Sekundärwicklungen 65, 66 und 67.A rectangular core 78, 79, 80, which consists of several, is assigned to each partial converter Sheet metal fins is assembled and forms a rectangular ring in cross section, with its invisible leg through the coil tube 68/53, 54 and 55 passed through. So that the primary winding 75, 76 and 77 of one leg of the core, as well as the secondary windings 65, 66 and 67.

An den Spulenkörpern 50, 51 und 52 sind Taschen 81, 82 und 83 mit Aufnahmeöffnungen 84, 85 und 86 angeformt, die zur Aufnahme von Anschlußfahnen 87, 88 und 89 dienen. Jede der Anschlußfahnen 87 bis 89 besitzt einen abgekröpften Vorsprung 90 und einen flachen Vorsprung 91, die in Aufsicht miteinander eine zweizinkige Gabel bilden. Der Vorsprung 91 oder Schenkel 91 aller drei Anschlußfahnen 87 bis 89 wird jeweils in die Aufnahmetasche 84, 85 und 86 zur Halterung eingesteckt und an den entsprechenden Anschlußfahnen 90 wird das eine Ende der Primärwicklungen 75 bis 77 angeschlossen.Pockets 81, 82 and 83 are also on the bobbins 50, 51 and 52 Shaped openings 84, 85 and 86, which are used to receive terminal lugs 87, 88 and 89 serve. Each of the connecting lugs 87 to 89 has a cranked one Projection 90 and a flat projection 91, which one another in supervision Form a two-pronged fork. The projection 91 or leg 91 of all three Connection lugs 87 to 89 are in the receiving pocket 84, 85 and 86 for Inserted bracket and on the corresponding terminal lugs 90 is one End of primary windings 75 to 77 connected.

Die so gefertigte Wandlerordnung 12, 13 und 14 wird dann in nicht näher dargestellter Weise an der Leiterplatte 10 befestigt, vorzugsweise festgeschraubt, wobei das andere Ende 15 der Primärwicklung mit einer L-förmigen Steckerfahne 16, jeweils für alle 3 Phasen, elektrisch leitend verbunden ist. Auf diese Weise fließt der Strom durch die Steckerfahnen 16, die Primärwicklungen 75 bis 77 zu den Anschlußfahnen 87 bis 89.The converter arrangement 12, 13 and 14 thus produced is then shown in FIG Way attached to the circuit board 10, preferably screwed tight, the other End 15 of the primary winding with an L-shaped plug lug 16, in each case for all 3 Phases, electrically connected. In this way, the current flows through the Connector lugs 16, the primary windings 75 to 77 to the connection lugs 87 to 89.

Auf der Seite der Leiterplatte 10, die die Wandler 12 bis 14 trägt, sind zwei Steuerspulen 17 und 18 befestigt, die die Schenkel 19 und 20 eines nicht näher dargestellten Joches umgreifen. Die Spulen 17 und 18 sind auf nicht näher dargestellte Weise mit den Sekundärwicklungen 65, 66 und 67 gekoppelt, dergestalt, daß über die Spulen 17 und 18 die Schenkel 19 und 20 magnetisiert werden.On the side of the printed circuit board 10, which carries the transducers 12 to 14, there are two Control coils 17 and 18 attached, the legs 19 and 20 one not closer embrace the illustrated yokes. The coils 17 and 18 are not shown in detail Coupled with the secondary windings 65, 66 and 67, such that over the Coils 17 and 18, the legs 19 and 20 are magnetized.

Bei der Anordnung gemäß Fig. 1 befinden sich auf der Leiterplatte weiterhin noch elektronische Komponenten 21 und 22, die zur Verarbeitung der von der Sekundärwicklung 12 bis 14 herrührenden Signale dienen.1 are still on the circuit board electronic components 21 and 22, which are used to process the Secondary winding 12 to 14 originating signals are used.

Wie aus Fig. 1 ersichtlich ist, springen die Anschlußfahnen 87 bis 89 und die Jochschenkel 19 und 20 von einer Seite der Leilerplatte 10 vor, wogegen die Steckerfahnen 16 auf der entgegensetzten Seite der Leiterplatte 10 über einen Haltesteg 23 befestigt sind.As can be seen from Fig. 1, the connecting lugs 87 to 89 and jump Yoke legs 19 and 20 from one side of the divider plate 10, whereas the Connector lugs 16 on the opposite side of the circuit board 10 via a Holding web 23 are attached.

Die Fig. 3 zeigt eine Einsicht in ein Gehäuse 24, in dem sich eine Schaltwippe 25 befindet, an der zwei Kontaktbrücken 26 und 27 angeordnet sind, die Festkontaktstücke 28 und 29 bzw. 30 und 31 überbrücken können. Wenn die Schaltwippe 25 um ihre Mittelachse M nach rechts verschwenkt wird, werden die Kontaktstücke 30 und 31 von der Kontaktbrücke 27 geschlossen bzw. elektrisch leitend verbunden, wogegen die Festkontaktstücke 28 und 29 nicht miteinander verbunden sind. Schwenkt die Kontaktwippe 25 in die andere Richtung nach links, dann entfernt sich die Kontaktbrücke 27 von den Kontaktstücken 30 und 31 und die beiden Kontaktstücke 28 und 29 werden mittels der Kontaktbrücke 26 elektrisch leitend miteinander verbunden.3 shows an insight into a housing 24 in which a rocker switch 25 is located, on which two contact bridges 26 and 27 are arranged, the fixed contact pieces 28 and 29 or 30 and 31 can bridge. When the rocker switch 25 to their Center axis M is pivoted to the right, the contact pieces 30 and 31 of the contact bridge 27 closed or electrically connected, whereas the Fixed contact pieces 28 and 29 are not connected to each other. Swing it Contact rocker 25 in the other direction to the left, then the moves away Contact bridge 27 from the contact pieces 30 and 31 and the two contact pieces 28 and 29 are connected to one another in an electrically conductive manner by means of the contact bridge 26.

Die feststehenden Kontaktstücke 28 bis 31 durchgreifen eine Stirnwand 32 und enden in Steueranschlußfahnen 33, wobei jedem feststehenden Kontaktstück 28 bis 31 jeweils eine Steueranschlußfahne 33 zugeordnet ist. Unterhalb der Kontaktwippe 25 springen, ausgehend von den vertikal verlaufenden Seitenwandungen 34 und 35, Führungswände 36 und 37 vor; auf einer horizontalen Zwischenwand 38 sind Stege 39 und 40 vorgesehen. Parallel zur Zwischenwand 38 verläuft eine innere Führungswand 39. Zwischen den Führungswänden 36 und der inneren Führungswand 41 sowie der Leiste 39 und der Führungswand 37, der inneren Führungswand 41 und der Leiste 40 sind Führungsräume 42 und 43 gebildet. The fixed contact pieces 28 to 31 pass through an end wall 32 and end in control terminal lugs 33, each fixed contact piece 28 to 31 each a control terminal lug 33 is assigned. Jump below the contact rocker 25 starting from the vertical side walls 34 and 35, Guide walls 36 and 37 in front; webs 39 are on a horizontal partition 38 and 40 are provided. An inner guide wall runs parallel to the intermediate wall 38 39. Between the guide walls 36 and the inner guide wall 41 and the Ledge 39 and the guide wall 37, the inner guide wall 41 and the ledge 40 guide spaces 42 and 43 are formed.

Unterhalb der Zwischenwand 38 befindet sich eine weitere Zwischenwand 44; zwischen den beiden Zwischenwänden 38 und 44 sind Durchbrüche 45, 46 und 47 vorgesehen.A further intermediate wall 44 is located below the intermediate wall 38; between openings 45, 46 and 47 are provided in the two intermediate walls 38 and 44.

Man erkennt aus den Fig. 1 und 2, daß die Leiterplatte 10 mit den Wandlern 12 bis 14 und den weiteren Komponenten einerseits und das Gehäuse 24, das als Abdeckhaube bezeichnet werden kann, gemäß den Fig. 3 und 4 eine weitere Einheit gebildet ist, die vormontierbar sind.1 and 2 that the printed circuit board 10 with the transducers 12 to 14 and the other components on the one hand and the housing 24, which acts as a cover 3 and 4, a further unit is formed, which are pre-assembled.

Das Zusammenfügen der beiden Einheiten erfolgt so, daß die Einheit gemäß Fig. 1 und 2 gemäß Pfeilrichtung P mit den Anschlußfahnen 87 bis 89 sowie den Jochschenkeln 19 und 20 in die Abdeckhaube 24 eingefügt wird, wobei die Anschlußfahnen 87 bis 89 die Ausnehmungen 45 bis 47 durchgreifen und die Jochschenkel 19, 20 in die Führungsräume 42, 43 eingeführt werden. Man erkennt hieraus, daß eine elektrisch leitende Verbindung zwischen den beiden Einheiten nicht vorhanden ist.The two units are joined together in such a way that the unit according to FIGS. 1 and 2 in the direction of arrow P with the connecting lugs 87 to 89 and the yoke legs 19 and 20 is inserted into the cover 24, the connecting lugs 87 to 89 reach through the recesses 45 to 47 and the yoke legs 19, 20 in the Leadership rooms 42, 43 are introduced. It can be seen from this that an electric conductive connection between the two units is not present.

Zur Fertigmontage wird eine nicht näher dargestellte Abdeckplatte auf der Seite der Leiterplatte 10 angebracht, auf der die Steckerfahnen 16 vorspringen. Nach Anbringung dieser Abdeckplatte ist das Überstromrelais gemäß den Fig. 1 bis 5 fertig montiert.For final assembly, a cover plate, not shown, is on the side of the Printed circuit board 10 attached, on which the connector tabs 16 project. After installation this cover plate, the overcurrent relay according to FIGS. 1 to 5 is fully assembled.

Nachzutragen ist, daß an der Kontaktwippe 25 Permanentmagnete angebracht sind, die mit den Jochschenkeln 19, 20 wechseweise zusammenwirken. Ein Einstellknopf 48 zum Rückstellen und zum Einstellen einer manuellen Rückstellung oder automatischen Rückstellung wirkt mit der Wippe 25 zusammen, ebenso wie eine Stoptaste 49 zur Unterbrechung der Kontakte 28, 29 durch die Brücke 43.It is to be added that 25 permanent magnets are attached to the contact rocker interact with the yoke legs 19, 20 alternately. An adjustment button 48 to reset and to set a manual reset or automatic Reset interacts with the rocker 25, as does a stop button 49 Interruption of contacts 28, 29 by bridge 43.

Die Fig. 6 zeigt eine Ergänzung der elektromagnetischen Einheit: auf der der Leiterplatte 10 entgegengesetzt liegenden Seite der Spulenkörper 50, 51, 52 ist eine weitere Leiterplatte 100 befestigt, auf der zusätzliche elektronische Bauteile, hier ein Kondensator 101, befestigt sind. Die Leiterplatte 100 überdeckt die Räume für die Sekundärwicklungen. Dadurch wird eine weitere Raumeinsparung und Montagevereinfachung erzielt, insoweit, als der Kondensator 101 in den freien Raum 99 in der Abdeckhaube eingreifen kann.Fig. 6 shows a supplement to the electromagnetic unit: on the Printed circuit board 10 opposite side of the bobbin 50, 51, 52 is one another circuit board 100 attached, on the additional electronic components, here a Capacitor 101 are attached. The circuit board 100 covers the spaces for the Secondary windings. This will save even more space Simplification of assembly is achieved insofar as the capacitor 101 is in the free space 99 can engage in the cover.

Claims (20)

Elektronisches Überlastrelais für ein elektrisches Installationsgerät zum Motorschutz, mit einer Primärwicklung oder einem Primärleiter (im folgenden Primärwicklung genannt), einer Sekundärwicklung und mit einem rechteckförmigen Kern, jeweils pro Phase dadurch gekennzeichnet, daß ein Schenkel des Kerns (78, 79, 80) einen die Primärwicklung (75, 76, 77) und die Sekundärwicklung (65, 66 67) tragenden Spulenkörper (50, 51, 52) durchgreift, daß am Spulenkörper (50, 51, 52) ein erstes Raumabteil für die Sekundärwicklung zwischen zwei Wandungen und ein zweites Raumabteil zwischen zwei weiteren Wandungen für die Primärwicklung angeformt ist und je so einen Wandler bilden, daß Anschlußlaschen (87, 88, 89) vorgesehen sind, die zwei in gleiche Richtung vorspringende, parallele Fahnen (90, 91) aufweisen, von denen eine zur mechanischen Fixierung in eine Aufnahmetasche (84) am Spulenkörper dient und die andere im zweiten Raumabteil mit der Primärwicklung elektrisch leitend verbunden ist.Electronic overload relay for an electrical installation device for motor protection, with a primary winding or a primary conductor (hereinafter referred to as primary winding), a secondary winding and with a rectangular core, each per phase, characterized in that one leg of the core (78, 79, 80) one Primary winding (75, 76, 77) and the secondary winding (65, 66 67) carrying coil former (50, 51, 52) passes through that on the coil former (50, 51, 52) a first compartment for the secondary winding between two walls and a second Space compartment is formed between two further walls for the primary winding and each form such a converter that connection tabs (87, 88, 89) are provided which have two parallel lugs (90, 91) projecting in the same direction, one of which is mechanical Fixing in a receiving pocket (84) on the coil former and the other in the second compartment with the primary winding electrically conductive v is connected. Überlastrelais nach Anspruch 1, dadurch gekennzeichnet, daß die Enden des Sekundärwicklungsdrahtes an die benachbarte äußere Wandung geführt, darin fixiert und mit Stiften elektrisch leitend verbunden sind, die in Öffnungen einer Leiterplatte gesteckt und darin mit weiteren Anschlußleitungen auf der Leiterplatte elektrisch leitend verbunden sind, wodurch zwei Befestigungsstellen für den Wandler an der Leiterplatte gebildet sind.Overload relay according to claim 1, characterized in that the ends of the secondary winding wire to the adjacent outer wall, therein fixed and electrically connected with pins that are in openings one Printed circuit board plugged in and with additional connecting cables on the circuit board are electrically conductively connected, whereby two mounting points for the converter the circuit board are formed. Überlastrelais nach Anspruch 2, dadurch gekennzeichnet, daß die Spulenkörper an der Leiterplatte fixiert sind.Overload relay according to claim 2, characterized in that the Coil formers are fixed to the circuit board. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der rechteckförmige Kern durch lamellierte Bleche gebildet ist, die geteilt sind, so daß sie durch den Spulenkörper steckbar und gesteckt sind. Overload relay according to one of the preceding claims, characterized characterized in that the rectangular core is formed by laminated sheets which are divided so that they can be inserted and inserted through the coil body. Überlastrelais nach Anspruch 4, dadurch gekennzeichnet, daß an den äußeren Ecken der Rechteckform die Bleche mit Anphasungen versehen sind, an denen die Bleche quer miteinander verbunden sind, vorzugsweise verschweißt sind.Overload relay according to claim 4, characterized in that at the outer corners of the rectangular shape, the sheets are provided with chamfers which the sheets are connected to each other transversely, preferably welded. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Elektromagnetsystem auf einer Seite der Leiterplatte angeordnet ist und daß auf der anderen Seite eine Abdeckung aufgesetzt ist, die zur Führung der Primärleiter mit Schlitzen versehen sind, wobei die Primärleiter durch starre vorgebogene Leiterstücke gebildet sind.Overload relay according to one of the preceding claims, characterized characterized in that the electromagnetic system on one side of the circuit board is arranged and that a cover is placed on the other side, for Leading the primary conductors are provided with slots, the primary conductors rigid pre-bent conductor pieces are formed. Überlastrelais nach Anspruch 6, dadurch gekennzeichnet, daß die Leiterstücke Z-förmig gebogen und die Stege der beiden äußeren Leiterstücke V-förmig zueinander in einer Ebene senkrecht zur Längserstreckung der Endschenkel der Leiterstücke abgekröpft sind, so daß der Abstand der den Elektromagneten zugewandten Schenkel kleiner ist als der der äußeren Schenkel.Overload relay according to claim 6, characterized in that the Conductor pieces bent in a Z-shape and the webs of the two outer conductor pieces in a V-shape to each other in a plane perpendicular to the longitudinal extension of the end legs of the Conductor pieces are bent, so that the distance of the electromagnet facing leg is smaller than that of the outer leg. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Schlitze der Abkröpfform folgen.Overload relay according to one of the preceding claims, characterized characterized in that the slots follow the crank shape. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß ein Deckel vorgesehen ist, mit dem die Abdeckung mit den Schlitzen abgedeckt ist, wobei Öffnungen im Deckel vorgesehen sind, durch die die äußeren Schenkel hindurchgreifen.Overload relay according to one of the preceding claims, characterized characterized in that a cover is provided with which the cover with the Slits is covered, openings being provided in the lid through which the reach through the outer leg. Überlastrelais nach Anspruch 9, dadurch gekennzeichnet, daß die Öffnungen von rohrartigen Vorsprüngen umgeben sind, die senkrecht zum Deckel verlaufend an diesem angeformt sind und zur Isolierung der aus dem Deckel herausragenden Schenkelenden dienen. Overload relay according to claim 9, characterized in that the Openings are surrounded by tubular projections that are perpendicular to the lid are integrally formed on this and for insulation from the lid protruding thigh ends. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Elektromagnetsystem von einer Abdeckhaube abgedeckt ist, die Durchbrüche wenigstens für die Anschlußlaschen aufweist, so daß an diesen außerhalb der Abdeckhaube Anschlußleitungen anschließbar sind.Overload relay according to one of the preceding claims, characterized characterized in that the electromagnetic system is covered by a cover, has the openings at least for the connecting lugs, so that on these connecting cables can be connected outside the cover. Überlastrelais nach Anspruch 11, dadurch gekennzeichnet, daß auf der Seite der Leiterplatte, die den Wandler trägt, zwei mit dem Wandler elektrisch leitend verbundene Steuerspulen mit einem Joch mit zwei Jochschenkeln befestigt sind, wobei die Jochschenkel in die gleiche Richtung wie die Anschlußfahnen vorspringen.Overload relay according to claim 11, characterized in that on the Side of the circuit board that carries the converter, two electrically conductive with the converter connected control coils are attached to a yoke with two yoke legs, wherein the yoke legs project in the same direction as the connecting lugs. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß an der Abdeckhaube Festkontaktstücke angeordnet sind, die mit beweglichen Kontaktstücken an einer innerhalb der Abdeckhaube befindlichen Schaltwippe zusammenwirken, die in zwei stabile Stellungen verstellbar sind, in denen sie mit unterschiedlichen Kontaktstücken entsprechend dem Zustand im Überlastrelais (Überstrom durch die Primärleiter, Tripping oder Reset) kontaktierbar sind.Overload relay according to one of the preceding claims, characterized characterized in that fixed contact pieces are arranged on the cover, which with movable contact pieces on a located inside the cover Switch rocker interact, which are adjustable in two stable positions in which with different contact pieces according to the state in the overload relay (Overcurrent through the primary conductor, tripping or reset) can be contacted. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß an der Wippe Dauermagnete befestigt sind, die im montierten Zustand im Bereich der Jochschenkel liegen, so daß über die Jochschenkel und die Steuerspulen die Wippe und damit die beweglichen Kontaktstücke antreibbar sind.Overload relay according to one of the preceding claims, characterized characterized in that permanent magnets are attached to the rocker, which in the assembled State in the area of the yoke legs, so that over the yoke legs and Control coils the rocker and thus the movable contact pieces can be driven. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Abdeckplatte an der Leiterplatte festgerastet ist.Overload relay according to one of the preceding claims, characterized characterized in that the cover plate is snapped onto the circuit board. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Fahnen zu mechanischen Fixierung der Anschlußlaschen in der Ebene der Anschlußlaschen liegen. Overload relay according to one of the preceding claims, characterized characterized in that the flags for mechanical fixation of the connecting lugs in the level of the connecting lugs. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Fahnen der Anschlußlaschen, an denen die Primärleiter befestigt sind, aus der Ebene der Anschlußlaschen herausgedrückt sind und parallel dazu verlaufen.Overload relay according to one of the preceding claims, characterized characterized in that the flags of the connecting lugs on which the primary conductor are attached, are pressed out of the plane of the connecting lugs and parallel to get lost. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Leiterplatte mit Wandler und Steuerspulen und gegebenenfalls weiteren elektronischen oder elektrischen Bauteilen und die Abdeckhaube mit der Kontaktwippe und den Kontaktstellen jeweils eine vormontierbare Einheit bilden, die zur Montage ineinander steckbar und induktiv miteinander gekoppelt sind.Overload relay according to one of the preceding claims, characterized characterized in that the circuit board with transducers and control coils and, if necessary other electronic or electrical components and the cover with the Contact rocker and the contact points each form a preassembled unit for Assembly are pluggable and inductively coupled. Überlastrelais nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß im Bereich des Raumes an jedem Spulenkörper für die Sekundärwicklung auf denen der Leiterplatte abgewandten Seite eine weitere Leiterplatte zur Aufnahme elektronischer Bauteile befestigt ist.Overload relay according to one of the preceding claims, characterized characterized in that in the area of space on each bobbin for Secondary winding on the side facing away from the circuit board another Printed circuit board for receiving electronic components is attached. Überlastrelais nach Anspruch 19, dadurch gekennzeichnet, daß beide Leiterplatten parallel zueinander verlaufen.Overload relay according to claim 19, characterized in that both PCBs run parallel to each other.
EP00121152A 1999-09-30 2000-09-29 Electronic overload relay Expired - Lifetime EP1089309B1 (en)

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DE29917174U DE29917174U1 (en) 1999-09-30 1999-09-30 Electronic overload relay
DE29917174U 1999-09-30

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Also Published As

Publication number Publication date
ATE293839T1 (en) 2005-05-15
EP1089309A3 (en) 2003-05-28
EP1089309B1 (en) 2005-04-20
DE29917174U1 (en) 2000-01-13
DE50010086D1 (en) 2005-05-25

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