EP2466611B1 - Elektrische Schutzvorrichtung, die eine differentielle Schutzfunktion umfasst - Google Patents

Elektrische Schutzvorrichtung, die eine differentielle Schutzfunktion umfasst Download PDF

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Publication number
EP2466611B1
EP2466611B1 EP20110354057 EP11354057A EP2466611B1 EP 2466611 B1 EP2466611 B1 EP 2466611B1 EP 20110354057 EP20110354057 EP 20110354057 EP 11354057 A EP11354057 A EP 11354057A EP 2466611 B1 EP2466611 B1 EP 2466611B1
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EP
European Patent Office
Prior art keywords
toroid
winding
electric
plane
differential protection
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Active
Application number
EP20110354057
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English (en)
French (fr)
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EP2466611A1 (de
Inventor
Benoît Hage
Jean-Claude Ramirez
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Definitions

  • the present invention relates to an electrical protection apparatus comprising the differential protection function, said electrical apparatus comprising at least one cut-off device of a phase and / or neutral and a differential protection device, said devices being juxtaposed laterally and mounted on the same mounting bracket as a rail, each switching device having two main contacts, said main contacts being closed during normal operation of the device and able to be opened so as to interrupt the current in the event of an incident on an electrical circuit, and a breaking chamber to which the arc is displaced as soon as the contacts are separated, said differential protection device comprising a toroid extending in a plane extending substantially perpendicular to the direction of alignment of the devices, the axis of the orifice of the torus being parallel to the axis of alignment of the devices said toroid being adapted to receive a number of so-called primary winding and a so-called secondary winding of measurement of the fault current, the number of primary windings corresponding to the number of electric breaking devices, the primary windings being formed by winding around the toroid of primary conductor
  • Differential circuit breakers comprising, in a manner known per se, a circuit breaker associated with a differential protection module.
  • the circuit breaker is an electromagnetic or electronic protection device whose function is to interrupt the electric current in the event of an incident on an electrical circuit by opening the main contacts of said circuit breaker. It is capable of interrupting an overload current by means of thermal tripping means and a short-circuit current by means of magnetic tripping means.
  • the differential protection module is able to ensure the protection of people, ensuring a trip in case of abnormal current leakage.
  • This differential protection module comprises a toroidal magnetic circuit on which are wound one or more phase and neutral circuits, called primary circuits, and a so-called secondary circuit constituting a fault current detection coil.
  • the measuring coil is the seat of electromagnetic energy that supplies an electromagnet causing the circuit breaker to unlock and open its main contacts.
  • the arc is moved towards the breaking chamber under the effect of the so-called Laplace force, induced by the geometry of the fixed and mobile contacts.
  • the bow is channeled between two cheeks which allow to increase its speed of movement, to guide its trajectory and to lengthen it.
  • the torus is immediately next to the prechamber cut.
  • the torus is provided with primary coils which are wound around its circumference and the lateral proximity of these coils negatively influences both the opening torque of the moving contact (direction, direction, point of application, influence of the environment) and on the propulsive force of the electric arc from birth and during its looping just before moving the arc in pre-chamber.
  • the present invention aims to improve the cut and to avoid the destruction of the pole of the circuit breaker which is adjacent to the differential protection block in short circuits.
  • the subject of the present invention is an electrical protection apparatus, this apparatus being characterized in that if we consider an observation direction defined by the three successive planes extending substantially perpendicularly to the plane of the torus and to the plan for fixing the apparatus, said planes respectively comprising successively the mobile contact (s), the fixed contact (s) and the interrupting chamber, the winding (s) on the toroid follows (r) the winding rule which consists in that the primary conductor coming from the output terminal electrically connected to the fixed contact of the said first breaking device, located closest to the differential protection device, is wound around of the torus in the counterclockwise direction, while the primary conductor from the output terminal electrically connected to the fixed contact of the second cutoff device located next to the cutoff device said pre the opposite side of the differential protection device, is wound around the toroid, in the direction of clockwise, in that the orifice of the torus is located opposite the partition separating the cutoff device said first of the differential protection device, and opposite the cut-off prechamber for receiving the electric arc, the
  • the apparatus is a modular apparatus, each switching device and the differential protection device being each disposed in a separable module or not other modules.
  • the toroid is placed inside the differential protection device, such that the axis of the toroid extends substantially parallel to the direction of alignment of the modules.
  • the separation points of the main contacts, associated respectively with the different cut-off devices are located on the so-called aforementioned first plane.
  • the number of electrical switching devices is two and comprises a phase cutoff device and a neutral cutoff device.
  • the number of electrical breaking modules is two and comprises a phase cutoff module and a neutral cutoff module.
  • the axis of the torus is substantially perpendicular to the side walls of the modules.
  • said apparatus comprising at least two windings connected respectively to two cut-off devices, this apparatus is characterized in that the center of the second winding is located opposite the center of the first winding with respect to the axis of the winding. toroid, such that these two windings are angularly offset by 180 ° relative to each other with respect to this axis.
  • the center of the measuring winding is located in an axial plane of the torus situated at approximately 45 ° with respect to the so-called first axial plane containing the center of the first winding.
  • the differential protection device is located to the left or right of the phase cut-off device and / or the neutral, the above-mentioned winding rule applies in the same way in the two aforementioned provisions if the output terminals are electrically connected to the same contacts.
  • the apparatus is a differential circuit breaker comprising at least one cutoff and / or neutral device and a differential protection device.
  • the device is a bipolar modular differential circuit breaker.
  • a bipolar circuit breaker A is shown attached by one of its 3 side faces to a differential protection module B, the assembly being intended to be mounted on the same mounting bracket (not shown).
  • This circuit breaker comprises two modules, respectively a phase cutoff module 1 said first, and a neutral cutoff module 2, said second.
  • the output terminals of the circuit breaker A, 10.11 for the prior art and 14.15 for the device according to the invention are electrically connected to the terminals 9 of the differential protection device B after passing through a core 6 by so-called primary conductors 7,8, as regards the prior art and 12,13; 16,17; and 18,19 for the invention.
  • This core 6 extends inside the differential protection module in a plane parallel to the lateral faces 3,4,5 of the modules, its axis X extending parallel to the longitudinal direction of the fixing support and to the direction of alignment of the modules.
  • the so-called primary conductors 7,8, one of which is a phase conductor and the other a neutral conductor, are introduced inside the core 6 by its face 6a situated on the side of the circuit-breaker A, then make the torus turn before being introduced again into the torus by the same side as before, then the conductors cross the torus a second time and emerge from the opposite side 6b thereof, after which the conductors are connected to the cores.
  • 9 of the differential module B said pads 9 being intended to receive the output terminals (not shown) of the differential module B.
  • the primary conductor 8 coming from the terminal 11 of the circuit breaker A situated furthest left in the figures passes through the torus 6 in a direction opposite to that of the clockwise, while the primary conductor 7 from the terminal 10 to the right of the first, through the torus in the direction clockwise.
  • the son are as short as possible and has a minimum of folds. There is no crossing of wires between the terminals 10, 11 and the output of the core 6.
  • the primary conductor 13,17,19 coming from the terminal 15 located in the so-called second clipping module 12 is wound on the core 6 in a clockwise direction, while the second conductor 12,16,18 from the terminal 14 of the breaking module 1 said first, is wound on the core 6 in a direction opposite to that of clockwise.
  • the direction of rotation around the torus 6 of the primary conductors has been reversed with respect to the direction of rotation of the corresponding primary conductors of the apparatus according to the prior art.
  • the primary conductors 12, 13 are introduced inside the toroid by the face 6a of the torus 6 situated on the side of the circuit-breaker A, then go around the toroid, then go back over the torus and then leave the torus by the opposite face 6b to that located on the side of the circuit breaker.
  • the son are crossed at the output of the torus. But it will be noted that these wires could be crossed between the terminals 14,15 and the output 6a of the torus.
  • the primary conductors 16, 17 are introduced inside the torus 6 by its face 6b located on the opposite side to the circuit breaker A, then go around the torus, then go back over the torus to leave it by its face 6a located the circuit breaker side to be connected to the pads 9 of the differential protection module B.
  • the son are folded but not crossed between the terminals 14,15 and the output of the core 6a.
  • the primary conductors 18, 19 are introduced into the core 6 by the face 6b thereof located on the opposite side of the circuit breaker, then pass through the core 6 and exit through the other face 6a, before going to connect on the 9 of the differential protection module.
  • the axis X of the core is placed substantially perpendicular to the breaking chamber C.
  • the first coil 21 is placed on the core 6 so that its center 22 is located between a first axial plane Q of the core 6 passing through the point Y of separation of the contacts 23,24 of the circuit breaker and a second axial plane R of the torus forming with the first plane Q an angle ⁇ of substantially 45 °.
  • the center 26 of the second winding 25 (to be represented) is then in a diametrically opposite position with respect to the center 22 of the first winding 21, and the measurement winding (not shown) is in a position offset from the first primary winding 21 and of the second primary winding at an angle of substantially 90 °.
  • this first axial plane Q of the torus is a plane passing through the device from the nose of the device to the fixing support and perpendicularly to this support.
  • the one 21 of the coils has been positioned in a precise zone opposite the point of separation of the contacts and it has been wound in a winding direction which makes it possible to create a magnetic field enabling the time to promote the electromagnetic force acting on the arc and leading to the arc chute, and also to increase the opening torque of the movable contact.
  • the face 6a of the toroid located on the side of the circuit breaker A is located closer to the separation wall 3 between the circuit breaker A and the differential protection module B, so as to reduce as much as possible the distance between the contacts and the torus.
  • any metallic element shielding type
  • all the metal parts as well as the conductors contribute to a complex re-looping of the magnetic field lines and in particular, those produced by the winding of the torus.
  • a modification of the propulsion force is created on the cutoff arc in the direction of its displacement towards the breaking chamber. from the opening of the contacts (during the looping of the arc), then during its journey in the prechamber and up to the breaking chamber.
  • the lateral parasitic component L is increased by a factor of 2 as shown in FIG. figure 2 , which has the effect of reducing the propulsion component T.
  • the torus environment is exploited to optimize the channeling of the magnetic field lines so that they produce the beneficial effects on the electric arc and the moving contact.
  • the effects of the field according to the invention improve the cutoff, while the solution with a screen restores it only.
  • a gain on the opening torque of the movable contact is obtained by a factor of 3 and a cancellation of the parasitic side component, the gain then being 100%.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (12)

  1. Elektrisches Schaltgerät (A) mit Differenzstrom-Schutzfunktion, welches Schaltgerät mindestens eine Phasenleiter- und/oder Neutralleiter-Abschalteinrichtung (1, 2) sowie eine Differenzstrom-Schutzeinrichtung umfasst, welche Einrichtungen seitlich aneinandergebaut und auf dem gleichen Montageträger wie beispielsweise einer Tragschiene befestigt sind, wobei jede Abschalteinrichtung zwei Hauptkontakte (23, 24), die dazu ausgelegt sind, im Normalbetrieb des Schaltgeräts geschlossen und im Störungsfall geöffnet zu werden, um den Stromfluss in einem Stromkreis zu unterbrechen, sowie eine Löschkammer (C) umfasst, in die der Lichtbogen unmittelbar nach Trennung der Kontakte getrieben wird, und die genannte Differenzstrom-Schutzeinrichtung einen Ringkernwandler (6) umfasst, der in einer annähernd senkrecht zur Fluchtungsebene der Einrichtungen liegenden Ebene angeordnet ist, wobei die Achse der Kernöffnung des Ringkernwandlers parallel zur Fluchtungsachse der Einrichtungen verläuft und der genannte Ringkernwandler dazu dient, mit einer bestimmten Anzahl von sogenannten Primärwicklungen (21) sowie einer sogenannten Sekundärwicklung zur Fehlerstrommessung versehen zu werden, wobei die Anzahl der Primärwicklungen der Anzahl der elektrischen Abschalteinrichtungen entspricht und die Primärwicklungen durch um den Ringkern geführte Primärleiter (18, 19) gebildet werden, die jeweils eine Ausgangsklemme einer Abschalteinrichtung mit einem Anschluss der Differenzstrom-Schutzeinrichtung verbinden,
    dadurch gekennzeichnet, dass bei Annahme einer Betrachtungsrichtung, die durch die drei aufeinanderfolgenden, annähernd senkrecht zur Ebene des Ringkernwandlers sowie zur Befestigungsebene der Schutzeinrichtungen verlaufenden Ebenen definiert ist, in welchen Ebenen hintereinander der bewegliche Kontakt/ die beweglichen Kontakt/e, der feststehende Kontakt//die feststehenden Kontakt/e und die Löschkammer angeordnet sind, die um den Ringkern geführten Wicklung/en einem Wicklungssinn folgen, der darin besteht, dass der von der elektrisch mit dem feststehenden Kontakt der sogenannten ersten, der Differenzstrom-Schutzeinrichtung am nächsten liegenden Abschalteinrichtung (1) verbundenen Ausgangsklemme (14) zugeführte Primärleiter (12, 16, 18) im Gegenuhrzeigersinn um den Ringkernwandler (6) gewickelt ist, während der von der elektrisch mit dem feststehenden Kontakt der neben der sogenannten ersten Abschalteinrichtung, auf der der Differenzstrom-Schutzeinrichtung abgewandten Seite angeordneten, sogenannten zweiten Abschalteinrichtung verbundenen Ausgangsklemme (15) zugeführte Primärleiter (13, 17, 19) im Uhrzeigersinn um den Ringkernwandler (6) gewickelt ist, und dass die Kernöffnung des Ringkernwandlers (3) gegenüber der Wand (3), welche die sogenannte erste Abschalteinrichtung (1) von der Differenzstrom-Schutzeinrichtung B trennt, sowie gegenüber der zur Einleitung des Lichtbogens dienenden Löschvorkammer C angeordnet ist, wobei der genannte Wicklungssinn um den Ringkernwandler umgekehrt wird, wenn die Ausgangsklemme/n elektrisch mit dem/ den beweglichen Kontakt/en verbunden ist/sind,
    sowie dadurch, dass der Ringkernwandler (6) im Inneren der Differenzstrom-Schutzeinrichtung angeordnet ist, derart dass der Mittelpunkt (22) der ersten Wicklung (21) zwischen einer als erste Ebene bezeichneten Axialebene Q des Ringkernwandlers, die annähernd parallel zur anfänglichen Ausbreitungsrichtung des Lichtbogens sowie durch den Trennpunkt Y der Hauptkontakte (23, 24) mindestens einer der Abschalteinrichtungen verläuft, und einer als zweite Ebene bezeichneten Axialebene R des Ringkernwandlers angeordnet ist, die auf der Seite der Löschkammer im Winkel von 45° zur ersten Ebene Q angeordnet ist.
  2. Elektrisches Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, dass dieses als modulares Schaltgerät ausgebildet ist, wobei die beiden Abschalteinrichtungen (1, 2) und die Differenzstrom-Schutzeinrichtung B jeweils in Modulen angeordnet sind, die von den übrigen Modulen getrennt werden können oder nicht.
  3. Elektrisches Schaltgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ringkernwandler (6) im Inneren der Differenzstrom-Schutzeinrichtung B angeordnet ist, derart dass die Achse X des Ringkernwandlers (6) annähernd parallel zur Fluchtungsebene der Module verläuft.
  4. Elektrisches Schaltgerät nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Trennpunkte Y der den einzelnen Abschalteinrichtungen (1, 2) zugeordneten Hauptkontakte (23, 24) in der genannten ersten Ebene Q angeordnet sind.
  5. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anzahl der elektrischen Abschalteinrichtungen (1, 2) zwei beträgt und eine Phasenleiter-Abschalteinrichtung sowie eine Neutralleiter-Abschalteinrichtung umfasst.
  6. Elektrisches Schaltgerät nach irgendeinem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Anzahl der elektrischen Abschalteinrichtungen zwei beträgt und eine Phasenleiter-Abschalteinrichtung sowie eine Neutralleiter-Abschalteinrichtung umfasst.
  7. Elektrisches Schaltgerät nach irgendeinem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Achse X des Ringkernwandlers (6) annähernd parallel zu den Seitenwänden (3, 4, 5) der Module angeordnet ist.
  8. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche mit mindestens zwei, an jeweils eine Abschalteinrichtung (1, 2) angeschlossenen Wicklungen (21, 25), dadurch gekennzeichnet, dass der Mittelpunkt (26) der zweiten Wicklung (25) in Bezug zur Achse X des Ringkernwandlers (6) gegenüber dem Mittelpunkt (22) der ersten Wicklung (21) angeordnet ist, derart dass die Wicklungen in Bezug zu dieser Achse um 180° versetzt zueinander angeordnet sind.
  9. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Mittelpunkt der Messwicklung in einer Axialebene des Ringkernwandlers angeordnet ist, welche in einem Winkel von etwa 45° zur sogenannten ersten Axialebene Q verläuft, die den Mittelpunkt (22) der ersten Wicklung (21) enthält.
  10. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Differenzstrom-Schutzeinrichtung entweder rechts oder links von der Phasenleiter- und/oder Neutralleiter-Abschaltvorrichtung angeordnet ist, wobei der genannte Wicklungssinn in beiden Anordnungen gleichermaßen zur Anwendung kommt, wenn die Ausgangsklemmen elektrisch mit den gleichen Kontakten verbunden sind.
  11. Elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es sich um einen Leistungsschalter mit Differenzstromschutz handelt, der mindestens eine Phasenleiter- und/oder Neutralleiter-Abschaltvorrichtung A sowie eine Differenzstrom-Schutzeinrichtung B umfasst.
  12. Elektrisches Schaltgerät nach Anspruch 11, dadurch gekennzeichnet, dass es sich um einen zweipoligen modularen Leistungsschalter mit Differenzstromschutz handelt.
EP20110354057 2010-12-20 2011-10-21 Elektrische Schutzvorrichtung, die eine differentielle Schutzfunktion umfasst Active EP2466611B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1004960A FR2969369A1 (fr) 2010-12-20 2010-12-20 Appareil de protection electrique comportant la fonction de protection differentielle

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Publication Number Publication Date
EP2466611A1 EP2466611A1 (de) 2012-06-20
EP2466611B1 true EP2466611B1 (de) 2013-07-24

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CN (1) CN102543611B (de)
ES (1) ES2428495T3 (de)
FR (1) FR2969369A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167340B (zh) * 2013-05-20 2017-04-26 施耐德电器工业公司 断路器
FR3028663B1 (fr) * 2014-11-14 2016-12-16 Hager-Electro Sas Actionneur electromagnetique a bobines multiples
CN109427506B (zh) * 2017-08-25 2020-11-20 佛山市顺德区美的电热电器制造有限公司 压力开关及电压力锅
FR3072462B1 (fr) * 2017-10-16 2020-05-22 Schneider Electric Industries Sas Dispositif de mesure de courant, procede de fabrication, module de protection et disjoncteur differentiel utilisant un tel dispositif de mesure de courant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627324B1 (fr) * 1988-02-16 1995-05-12 Merlin Gerin Disjoncteur differentiel a neutre passant
FR2662017B1 (fr) * 1990-05-10 1996-07-26 Merlin Gerin Disjoncteur differentiel unipolaire et neutre.
IE920641A1 (en) * 1991-03-27 1992-10-07 Westinghouse Electric Corp Dual wound trip solenoid
FR2715517B1 (fr) * 1994-01-26 1996-03-22 Merlin Gerin Bloc déclencheur différentiel.
FR2752479B1 (fr) * 1996-08-13 1998-09-25 Schneider Electric Sa Disjoncteur differentiel electronique
FR2920911B1 (fr) * 2007-09-11 2010-02-19 Schneider Electric Ind Sas Dispositif electrique a protection differentielle
FR2925756B1 (fr) * 2007-12-20 2010-02-26 Schneider Electric Ind Sas Appareil de protection electrique modulaire comportant une fonction electrique complementaire telle la fonction protection differentielle

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EP2466611A1 (de) 2012-06-20
ES2428495T3 (es) 2013-11-08
FR2969369A1 (fr) 2012-06-22
CN102543611B (zh) 2016-06-01
CN102543611A (zh) 2012-07-04

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