EP0531554A1 - Transformer, for instance symmation transformer - Google Patents

Transformer, for instance symmation transformer Download PDF

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Publication number
EP0531554A1
EP0531554A1 EP91115102A EP91115102A EP0531554A1 EP 0531554 A1 EP0531554 A1 EP 0531554A1 EP 91115102 A EP91115102 A EP 91115102A EP 91115102 A EP91115102 A EP 91115102A EP 0531554 A1 EP0531554 A1 EP 0531554A1
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EP
European Patent Office
Prior art keywords
conductor
rib
trough
snap hook
winding
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
EP91115102A
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German (de)
French (fr)
Other versions
EP0531554B1 (en
Inventor
Josef Dipl.-Ing. Baldauf (Fh)
Josef Dipl.-Ing. Herschberger (Fh)
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.)
Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to ES91115102T priority Critical patent/ES2066301T3/en
Priority to EP91115102A priority patent/EP0531554B1/en
Priority to AT91115102T priority patent/ATE115332T1/en
Priority to DE59103823T priority patent/DE59103823D1/en
Publication of EP0531554A1 publication Critical patent/EP0531554A1/en
Application granted granted Critical
Publication of EP0531554B1 publication Critical patent/EP0531554B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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
    • H01F38/38—Instruments transformers for polyphase ac

Definitions

  • the invention relates to a converter, for example summation current transformers for residual current circuit breakers, in detail according to the preamble of claim 1.
  • the ring winding of the converter means that at least one primary conductor is inserted as a conductor without an additional turn.
  • a primary conductor can twist and also move axially.
  • the primary conductor (s) When installing in a device that receives the converter, for example in a residual current circuit breaker, the primary conductor (s) must be individually aligned with connected terminals and other components, which is expensive manual work. Otherwise, the plugged-in primary conductors must be subsequently and individually determined, for example by wrapping them with insulating tape or pressing them in with additional parts.
  • the invention has for its object to develop a transducer that can be automatically assembled and forms an independently manageable assembly that facilitates further assembly in a device receiving the transducer.
  • the described task is solved by a transducer according to claim 1.
  • the conductor is cranked in the winding area and is thus in contact with a first radial rib within the ring winding. In its rectilinear area it lies in a guide trough which is formed in a second rib which is at an angle to the first rib. At least one snap hook engages in the crank, whereby the conductor is secured against twisting and in the axial direction.
  • Such a converter is easy to assemble mechanically and has few components. It is manageable and relieved thereby the further assembly in a device receiving the converter, for example in a residual current circuit breaker.
  • the two-part trough can consist of two half-shells or two hollow half-rings. It is favorable if the trough forms the first and second ribs so that they are arranged in a cross shape in the axial view. This cross can be skewed or in particular straight, so that the first and second ribs each enclose a right angle.
  • the snap hooks on the trough are also advantageously molded from molded material, as a result of which particularly few individual parts are produced.
  • the guide trough for the conductor in its rectilinear region can be formed at the foot of the first rib, the snap hook or hooks in the engagement region standing at an angle to the imaginary plane in which the offset of the conductor lies.
  • Such a snap hook can be L-shaped in side view, the angled part engaging in the crank.
  • the snap hook can be tooth-shaped and planar and run parallel to the first rib.
  • One or more such snap hooks also secure the conductor against axial movements.
  • the conductor is secured against twisting by its abutment on the first rib and its accommodation in the guide trough in the second radial rib.
  • the trough can then advantageously be made so close to the trough that a conductor can just be inserted.
  • the leader is with its offset is then supported diagonally in the quadrant of the ribs of the first and second type.
  • a snap hook can be implemented on each trough shell and for each of the four quadrants formed. Such a breakdown into several snap hooks makes it easier to rebound in the case of harder molding material. In practice, two snap hooks, which are formed by neighboring trough shells, are sufficient for each quadrant.
  • the converter 1 according to FIG. 1 has a ring winding 2 in a double-shell protective trough 3.
  • a primary conductor 4 is inserted through the ring winding 2 as a conductor without an additional turn, as can be seen from FIG.
  • the conductor 4 is cranked in the winding area so that it forms a crank 5.
  • the conductor 4 with its crank 5 is in contact with a first radial rib within the ring winding 2. In its rectilinear region, it lies in a guide trough 7 of a second radial rib 8.
  • a snap hook 9 engages in the crank 5, which is molded onto a shell part of the protective trough 3 made of molded material.
  • each snap hook has an L-shaped design in the axial view.
  • This guide trough 7 is arranged in the exemplary embodiment at the foot of the first rib 6.
  • the ring winding 2 is received by a double-shell protective trough 3 on molding material, which at the same time forms the ribs of the first and second type (6; 8), which run in the form of a cross in the axial view.
  • the first and second ribs (6; 8) enclose a right angle in the exemplary embodiment according to FIGS. 1 and 2.
  • the guide trough 7 for the conductor in its rectilinear region is designed at a distance from the first rib 6 in the second rib 8.
  • the head 4 is thus inclined with its offset 5, so that a tooth-shaped flat hook 9, which runs parallel to the first rib 6, can engage.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

A converter (1), for example a summing current transformer for earth-leakage current protection circuit breakers, through whose annular winding (2) at least one primary conductor (4) is passed, as a conductor, without being wound. It is provided that the conductor be bent (bend 5) in the form of a knee in the winding region in order that it finds a stop on a first radial rib (6) within the annular winding (2) and, in its straight-line region, rests in a guide trough (7) of a second radial rib (8), which is at an angle with respect to the first rib (6), at least one snapping hook (9) engaging in the bend (5), as a result of which the conductor (4) is secured against rotation and in the axial direction. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Wandler, beispielsweise Summenstromwandler für Fehlerstromschutzschalter, im einzelnen nach Gattungsbegriff von Patentanspruch 1. Durch die Ringwicklung des Wandlers ist zumindest ein Primärleiter als Leiter ohne zusätzliche Windung durchgesteckt. In einem derartigen Wandler kann sich ein Primärleiter verdrehen und auch axial verschieben. Bei der Montage in einem den Wandler aufnehmenden Gerät, beispielsweise in einem Fehlerstromschutzschalter, ist der bzw. sind die Primärleiter mit angeschlossenen Klemmen und weiteren Bauelementen einzeln auszurichten, was aufwendige Handarbeit darstellt. Anderenfalls sind die durchgesteckten Primärleiter nachträglich und individuell festzulegen, beispielsweise durch umwickeln mit Isolierband oder Eindrücken mit Zusatzteilen.The invention relates to a converter, for example summation current transformers for residual current circuit breakers, in detail according to the preamble of claim 1. The ring winding of the converter means that at least one primary conductor is inserted as a conductor without an additional turn. In such a converter, a primary conductor can twist and also move axially. When installing in a device that receives the converter, for example in a residual current circuit breaker, the primary conductor (s) must be individually aligned with connected terminals and other components, which is expensive manual work. Otherwise, the plugged-in primary conductors must be subsequently and individually determined, for example by wrapping them with insulating tape or pressing them in with additional parts.

Der Erfindung liegt die Aufgabe zugrunde, einen Wandler zu entwickeln, der automatisch montierbar ist und eine selbständig handhabbare Baugruppe bildet, die die weitere Montage in einem den Wandler aufnehmenden Gerät erleichtert.The invention has for its object to develop a transducer that can be automatically assembled and forms an independently manageable assembly that facilitates further assembly in a device receiving the transducer.

Die Lösung der geschilderten Aufgabe erfolgt durch einen Wandler nach Patentanspruch 1. Der Leiter ist im Wicklungsbereich knieförmig gekröpft und findet damit eine Anlage an einer ersten radialen Rippe innerhalb der Ringwicklung. In seinem geradlinigen Bereich liegt er in einer Führungsmulde ein, die in einer zur ersten Rippe unter einem Winkel stehenden zweiten Rippe ausgebildet ist. In die Kröpfung greift zumindest ein Schnapphaken ein, wodurch der Leiter gegen Verdrehen und in axialer Richtung gesichert ist. Ein derartiger Wandler ist leicht mechanisch zu montieren und weist wenig Bauteile auf. Er ist für sich handhabbar und erleichtert dadurch die weitere Montage in einem den Wandler aufnehmenden Gerät, beispielsweise in einem Fehlerstromschutzschalter.The described task is solved by a transducer according to claim 1. The conductor is cranked in the winding area and is thus in contact with a first radial rib within the ring winding. In its rectilinear area it lies in a guide trough which is formed in a second rib which is at an angle to the first rib. At least one snap hook engages in the crank, whereby the conductor is secured against twisting and in the axial direction. Such a converter is easy to assemble mechanically and has few components. It is manageable and relieved thereby the further assembly in a device receiving the converter, for example in a residual current circuit breaker.

Wenn die Ringwicklung von einem zweiteiligen Trog aus Formstoff aufgenommen wird, ist sie gegen Verletzungen durch einzuführende Primärleiter geschützt. Der zweiteilige Trog kann aus zwei Halbschalen bestehen oder aus zwei hohlen Halbringen. Es ist günstig, wenn der Trog die ersten und zweiten Rippen bildet, so daß sie in axialer Sicht kreuzförmig angeordnet sind. Dieses Kreuz kann schief oder insbesondere gerade ausgeführt sein, so daß die ersten und zweiten Rippen jeweils einen rechten Winkel einschließen.If the ring winding is taken up by a two-part trough made of molded material, it is protected against injuries caused by the primary conductor to be inserted. The two-part trough can consist of two half-shells or two hollow half-rings. It is favorable if the trough forms the first and second ribs so that they are arranged in a cross shape in the axial view. This cross can be skewed or in particular straight, so that the first and second ribs each enclose a right angle.

Vorteilhafterweise sind auch die Schnapphaken am Trog aus Formstoff angeformt, wodurch besonders wenig Einzelteile entstehen.The snap hooks on the trough are also advantageously molded from molded material, as a result of which particularly few individual parts are produced.

Die Führungsmulde für den Leiter in seinem geradlinigen Bereich kann am Fuße der ersten Rippe ausgebildet sein, wobei der bzw. die Schnapphaken im Eingriffsbereich unter einem Winkel zu der gedachten Ebene steht bzw. stehen, in der die Kröpfung des Leiters liegt. Ein solcher Schnapphaken kann in Seitenansicht L-förmig ausgeführt sein, wobei der abgewinkelte Teil in die Kröpfung eingreift.The guide trough for the conductor in its rectilinear region can be formed at the foot of the first rib, the snap hook or hooks in the engagement region standing at an angle to the imaginary plane in which the offset of the conductor lies. Such a snap hook can be L-shaped in side view, the angled part engaging in the crank.

Wenn die Führungsmulde für den Leiter in seinem geradlinigen Bereich beabstandet zur ersten Rippe ausgeführt ist, kann der Schnapphaken zahnförmig eben ausgeführt sein und parallel zur ersten Rippe verlaufen. Ein oder mehrere derartige Schnapphaken sichern ebenfalls den Leiter gegen axiale Bewegungen. Gegen verdrehen ist der Leiter durch seine Anlage an der ersten Rippe und seine Aufnahme in der Führungsmulde in der zweiten radialen Rippe gesichert. Die Mulde kann dann vorteilhafterweise so nahe am Trog ausgeführt sein, daß gerade noch ein Leiter eingeführt werden kann. Der Leiter ist mit seiner Kröpfung dann diagonal im Quadranten der Rippen erster und zweiter Art abgestützt.If the guide trough for the conductor is designed at a distance from the first rib in its rectilinear region, the snap hook can be tooth-shaped and planar and run parallel to the first rib. One or more such snap hooks also secure the conductor against axial movements. The conductor is secured against twisting by its abutment on the first rib and its accommodation in the guide trough in the second radial rib. The trough can then advantageously be made so close to the trough that a conductor can just be inserted. The leader is with its offset is then supported diagonally in the quadrant of the ribs of the first and second type.

Bei einem zweischaligen Trog kann an jeder Trogschale und für jeden der vier gebildeten Quadranten ein Schnapphaken ausgeführt sein. Durch solch eine Untergliederung in mehrere Schnapphaken wird bei härterem Formstoff ein Ausfedern erleichtert. In der Praxis genügen je Quadranten zwei Schnapphaken, die durch benachbarte Trogschalen gebildet werden.In the case of a double-shell trough, a snap hook can be implemented on each trough shell and for each of the four quadrants formed. Such a breakdown into several snap hooks makes it easier to rebound in the case of harder molding material. In practice, two snap hooks, which are formed by neighboring trough shells, are sufficient for each quadrant.

Die Erfindung soll nun anhand von in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispielen näher erläutert werden:

In FIG 1
ist ein Wandler nach einem ersten Ausführungsbeispiel in perspektivischer Darstellung und sektorförmig aufgeschnitten sowie in Explosionsdarstellung wiedergegeben.
In FIG 2
ist der Wandler nach Figur 1 mit einem Leiter veranschaulicht.
In FIG 3
ist ein Wandler nach einem anderen Ausführungsbeispiel bei axialer Sicht dargestellt.
The invention will now be explained in greater detail on the basis of exemplary embodiments shown roughly schematically in the drawing:
In FIG. 1
is a converter according to a first embodiment in a perspective view and cut open sector-shaped and shown in an exploded view.
In FIG. 2
the converter of Figure 1 is illustrated with a conductor.
In FIG. 3
a converter according to another embodiment is shown with an axial view.

Der Wandler 1 nach Figur 1 weist eine Ringwicklung 2 in einem zweischaligen Schutztrog 3 auf. Ein Primärleiter 4 ist als Leiter ohne zusätzliche Windung durch die Ringwicklung 2 durchgesteckt, wie es aus Figur 2 zu ersehen ist. Der Leiter 4 ist im Wicklungsbereich knieförmig gekröpft, so daß er eine Kröpfung 5 bildet. Der Leiter 4 findet mit seiner Kröpfung 5 eine Anlage an einer ersten radialen Rippe innerhalb der Ringwicklung 2. In seinem geradlinigen Bereich liegt er in einer Führungsmulde 7 einer zweiten radialen Rippe 8 ein. In die Kröpfung 5 greift ein Schnapphaken 9 ein, der jeweils an einem Schalenteil des Schutztrogs 3 aus Formstoff angeformt ist. Im Ausführungsbeispiel weist jeder Schnapphaken in axialer Sicht eine L-förmige Ausbildung auf. Hiermit greift er in die Kröpfung 5 ein, so daß der Leiter 4 in seiner Lage in axialer Richtung gesichert ist. Hierbei wird er festgelegt und gegen Verdrehen gesichert durch das Einliegen des geradlinigen Bereichs des Leiters 4 in einer Führungsmulde 7. Diese Führungsmulde 7 ist im Ausführungsbeispiel am Fuß der ersten Rippe 6 angeordnet.The converter 1 according to FIG. 1 has a ring winding 2 in a double-shell protective trough 3. A primary conductor 4 is inserted through the ring winding 2 as a conductor without an additional turn, as can be seen from FIG. The conductor 4 is cranked in the winding area so that it forms a crank 5. The conductor 4 with its crank 5 is in contact with a first radial rib within the ring winding 2. In its rectilinear region, it lies in a guide trough 7 of a second radial rib 8. A snap hook 9 engages in the crank 5, which is molded onto a shell part of the protective trough 3 made of molded material. In the exemplary embodiment, each snap hook has an L-shaped design in the axial view. With this he reaches into the Crank 5 so that the conductor 4 is secured in its position in the axial direction. Here, it is fixed and secured against twisting by the lying of the rectilinear region of the conductor 4 in a guide trough 7. This guide trough 7 is arranged in the exemplary embodiment at the foot of the first rib 6.

Die Ringwicklung 2 wird von einem zweischaligen Schutztrog 3 auf Formstoff aufgenommen, der zugleich die Rippen erster und zweiter Art bildet (6; 8), die in axialer Sicht kreuzförmig verlaufen. Die ersten und zweiten Rippen (6; 8) schließen im Ausführungsbeispiel nach den Figuren 1 und 2 einen rechten Winkel ein.The ring winding 2 is received by a double-shell protective trough 3 on molding material, which at the same time forms the ribs of the first and second type (6; 8), which run in the form of a cross in the axial view. The first and second ribs (6; 8) enclose a right angle in the exemplary embodiment according to FIGS. 1 and 2.

Die Führungsmulde 7 für den Leiter in seinem geradlinigen Bereich ist im Ausführungsbeispiel nach Figur 3 beabstandet zur ersten Rippe 6 in der zweiten Rippe 8 ausgeführt. Der Leiter 4 liegt mit seiner Kröpfung 5 hierdurch schräg, so daß ein zahnförmig eben ausgeführter Schnapphaken 9, der parallel zur ersten Rippe 6 verläuft, eingreifen kann.In the exemplary embodiment according to FIG. 3, the guide trough 7 for the conductor in its rectilinear region is designed at a distance from the first rib 6 in the second rib 8. The head 4 is thus inclined with its offset 5, so that a tooth-shaped flat hook 9, which runs parallel to the first rib 6, can engage.

Claims (5)

Wandler (1), beispielsweise Summenstromwandler für Fehlerstromschutzschalter, durch dessen Ringwicklung (2) zumindest ein Primärleiter (4) als Leiter ohne Windung durchgesteckt ist, dadurch gekennzeichnet, daß der Leiter im Wicklungsbereich knieförmig gekröpft ist (Kröpfung 5), damit er eine Anlage an einer ersten radialen Rippe (6) innerhalb der Ringwicklung (2) findet, und in seinem geradlinigen Bereich in einer Führungsmulde (7) einer zur ersten Rippe (6) unter einem Winkel stehenden zweiten radialen Rippe (8) einliegt, wobei in die Kröpfung (5) zumindest ein Schnapphaken (9) eingreift, wodurch der Leiter (4) gegen Verdrehen und in axialer Richtung gesichert ist.Transducer (1), for example total current transformer for residual current circuit breakers, through the ring winding (2) of which at least one primary conductor (4) is inserted as a conductor without a turn, characterized in that the conductor in the winding area is bent at an elbow (offset 5) so that it contacts a system a first radial rib (6) takes place within the ring winding (2), and in its rectilinear area in a guide trough (7) a second radial rib (8) is positioned at an angle to the first rib (6), the crank ( 5) engages at least one snap hook (9), whereby the conductor (4) is secured against rotation and in the axial direction. Wandler nach Anspruch 1,
dadurch gekennzeichnet, daß die Ringwicklung (2) von einem zweiteiligen Schutztrog (3) aus Formstoff aufgenommen wird, der Schnapphaken (9), die ersten und zweiten Rippen (6; 8) in axialer Sicht kreuzförmig bildet.Converter according to claim 1,
characterized in that the ring winding (2) is received by a two-part protective trough (3) made of molded material, the snap hook (9), the first and second ribs (6; 8) form a cross in an axial view. Wandler nach Anspruch 2,
dadurch gekennzeichnet, daß die ersten und zweiten Rippen (6; 8) jeweils einen rechten Winkel einschließen.Converter according to claim 2,
characterized in that the first and second ribs (6; 8) each form a right angle. Wandler nach Anspruch 2,
dadurch gekennzeichnet, daß die Führungsmulde (7) für den Leiter (4) in seinem geradlinigen Bereich am Fuße der ersten Rippe (6) ausgebildet ist und der bzw. die Schnapphaken (9) im Eingriffbereich einen Winkel zur gedachten Ebene, in der die Kröpfung (5) liegt, verläuft.Converter according to claim 2,
characterized in that the guide trough (7) for the conductor (4) is formed in its rectilinear area at the foot of the first rib (6) and the snap hook (s) (9) in the engagement area form an angle to the imaginary plane in which the offset (5) lies, runs. Wandler nach Anspruch 2,
dadurch gekennzeichnet, daß die Führungsmulde (7) für den Leiter (4) in seinem geradlinigen Bereich beabstandet zur ersten Rippe (6) ausgeführt ist und der bzw. die Schnapphaken (9) zahnförmig eben und parallel zur ersten Rippe (6) ausgeführt sind.Converter according to claim 2,
characterized in that the guide trough (7) for the conductor (4) is designed in its rectilinear area at a distance from the first rib (6) and the snap hook (s) (9) are tooth-shaped flat and parallel to the first rib (6).
EP91115102A 1991-09-06 1991-09-06 Transformer, for instance symmation transformer Expired - Lifetime EP0531554B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES91115102T ES2066301T3 (en) 1991-09-06 1991-09-06 TRANSFORMER, ESPECIALLY SUM SUM CURRENT TRANSFORMER.
EP91115102A EP0531554B1 (en) 1991-09-06 1991-09-06 Transformer, for instance symmation transformer
AT91115102T ATE115332T1 (en) 1991-09-06 1991-09-06 TRANSFORMERS, FOR EXAMPLE TOTAL CURRENT TRANSFORMERS.
DE59103823T DE59103823D1 (en) 1991-09-06 1991-09-06 Transducers, for example total current transformers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91115102A EP0531554B1 (en) 1991-09-06 1991-09-06 Transformer, for instance symmation transformer

Publications (2)

Publication Number Publication Date
EP0531554A1 true EP0531554A1 (en) 1993-03-17
EP0531554B1 EP0531554B1 (en) 1994-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115102A Expired - Lifetime EP0531554B1 (en) 1991-09-06 1991-09-06 Transformer, for instance symmation transformer

Country Status (4)

Country Link
EP (1) EP0531554B1 (en)
AT (1) ATE115332T1 (en)
DE (1) DE59103823D1 (en)
ES (1) ES2066301T3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710742A1 (en) * 1997-03-14 1998-09-24 Siemens Ag Summation current transformer arrangement e.g. for fault-current and difference current circuit-breakers
US6414579B1 (en) * 1999-12-06 2002-07-02 General Electric Company Current transformer and method for correcting asymmetries therein
EP1696444A3 (en) * 2005-02-17 2009-07-01 Siemens Aktiengesellschaft Summation current transformer
EP2423693A1 (en) * 2010-08-24 2012-02-29 Liaisons Electroniques-Mecaniques Lem S.A. Toroidal fluxgate current transducer
US20170077801A1 (en) * 2015-09-11 2017-03-16 Kabushiki Kaisha Yaskawa Denki Noise filter, circuit substrate, and power converter
WO2024126903A1 (en) * 2022-12-13 2024-06-20 Hager-Electro Sas Differential measurement torus for an electrical differential protection apparatus and associated electrical differential protection apparatus

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Publication number Priority date Publication date Assignee Title
DE1127429B (en) * 1960-02-04 1962-04-12 Siemens Ag Arrangement for strain relief for flexible connection lines introduced into the housing of electrical devices
GB1065171A (en) * 1962-07-09 1967-04-12 Chilton Electric Products Ltd Improvements in or relating to electrical circuit breakers
GB2074380A (en) * 1980-04-16 1981-10-28 Felten & Guilleaume Ag Oester A fault current circuit breaker
EP0159115A1 (en) * 1984-03-19 1985-10-23 AMP INCORPORATED (a New Jersey corporation) Electrical connector for flat cable or wire bundles
DE3612566A1 (en) * 1985-04-22 1986-10-23 General Electric Co., Schenectady, N.Y. EARTH CIRCUIT SELF SWITCH SIGNAL PROCESSOR MODULE AND METHOD FOR ELECTRICALLY CONNECTING THE SAME

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127429B (en) * 1960-02-04 1962-04-12 Siemens Ag Arrangement for strain relief for flexible connection lines introduced into the housing of electrical devices
GB1065171A (en) * 1962-07-09 1967-04-12 Chilton Electric Products Ltd Improvements in or relating to electrical circuit breakers
GB2074380A (en) * 1980-04-16 1981-10-28 Felten & Guilleaume Ag Oester A fault current circuit breaker
EP0159115A1 (en) * 1984-03-19 1985-10-23 AMP INCORPORATED (a New Jersey corporation) Electrical connector for flat cable or wire bundles
DE3612566A1 (en) * 1985-04-22 1986-10-23 General Electric Co., Schenectady, N.Y. EARTH CIRCUIT SELF SWITCH SIGNAL PROCESSOR MODULE AND METHOD FOR ELECTRICALLY CONNECTING THE SAME

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710742A1 (en) * 1997-03-14 1998-09-24 Siemens Ag Summation current transformer arrangement e.g. for fault-current and difference current circuit-breakers
DE19710742C2 (en) * 1997-03-14 1999-07-01 Siemens Ag Total current converter arrangement
US6414579B1 (en) * 1999-12-06 2002-07-02 General Electric Company Current transformer and method for correcting asymmetries therein
US6639770B2 (en) 1999-12-06 2003-10-28 General Electric Company Current transformer and method for correcting asymmetries therein
EP1696444A3 (en) * 2005-02-17 2009-07-01 Siemens Aktiengesellschaft Summation current transformer
EP2423693A1 (en) * 2010-08-24 2012-02-29 Liaisons Electroniques-Mecaniques Lem S.A. Toroidal fluxgate current transducer
US20170077801A1 (en) * 2015-09-11 2017-03-16 Kabushiki Kaisha Yaskawa Denki Noise filter, circuit substrate, and power converter
CN106535542A (en) * 2015-09-11 2017-03-22 株式会社安川电机 Noise filter, circuit board, and power converter
US10491151B2 (en) 2015-09-11 2019-11-26 Kabushiki Kaisha Yaskawa Denki Noise filter, circuit substrate, and power converter
CN106535542B (en) * 2015-09-11 2019-12-31 株式会社安川电机 Noise filter, circuit board, and power conversion apparatus
WO2024126903A1 (en) * 2022-12-13 2024-06-20 Hager-Electro Sas Differential measurement torus for an electrical differential protection apparatus and associated electrical differential protection apparatus

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ATE115332T1 (en) 1994-12-15
ES2066301T3 (en) 1995-03-01
EP0531554B1 (en) 1994-12-07
DE59103823D1 (en) 1995-01-19

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