EP1647041B1 - Mit einer testschaltung ausgestatteter differenz-schalter - Google Patents

Mit einer testschaltung ausgestatteter differenz-schalter Download PDF

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Publication number
EP1647041B1
EP1647041B1 EP04767737A EP04767737A EP1647041B1 EP 1647041 B1 EP1647041 B1 EP 1647041B1 EP 04767737 A EP04767737 A EP 04767737A EP 04767737 A EP04767737 A EP 04767737A EP 1647041 B1 EP1647041 B1 EP 1647041B1
Authority
EP
European Patent Office
Prior art keywords
contact
automatic interruption
arm
circuit breaker
current circuit
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.)
Not-in-force
Application number
EP04767737A
Other languages
English (en)
French (fr)
Other versions
EP1647041A2 (de
Inventor
Pierre Cimiez Parc KOCH
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
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 Legrand SNC, Legrand France SA filed Critical Legrand SNC
Priority to PL04767737T priority Critical patent/PL1647041T3/pl
Publication of EP1647041A2 publication Critical patent/EP1647041A2/de
Application granted granted Critical
Publication of EP1647041B1 publication Critical patent/EP1647041B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit

Definitions

  • the invention relates to the field of protection of electrical installations and people.
  • It relates more particularly to a differential switch provided with a test circuit for ensuring the proper operation of the differential switch.
  • the differential switches are circuit breakers able to trigger automatically to open an electrical circuit when it has a leakage current.
  • conductors connected to the electrical circuit to be protected are surrounded by an induction coil and, when the intensity of the current flowing in one direction is different from the intensity of the current flowing in the other direction. (which reveals the presence of a leakage current on the electrical circuit to be protected), an induced current is created in the coil and allows to supply an actuator which triggers the mechanism with the consequence of opening a pair of power contacts which cut at least one pole of the circuit.
  • the differential switches generally comprise a test circuit that makes it possible to simulate the presence of a leakage current and thus to check the correct tripping of the differential switch.
  • the principle commonly used to simulate such a leakage current consists in creating, within the differential switch, a bypass circuit comprising a resistor, one of whose terminals is connected to a pole of the circuit. electrical to protect on one side of the induction coil, and the other terminal is connected to another pole of the electrical circuit to be protected on the other side of the induction coil.
  • a simulated leakage current depending on the value of the resistance, is thus created.
  • This branch circuit is kept open by a test switch, for example of the push switch type, which is accessible from the differential switch housing for a user to implement the test function.
  • a pressure on the test contactor while the differential switch is triggered leads to connect the terminals of the devices of the electrical circuit to be protected across the test resistor, which presents a danger especially if these devices can store energy as is the case for example of a TV.
  • EP 0 456 586 discloses a test circuit for a differential release and having different springs, one of these springs cooperating with a transmission part of the actuating mechanism of the release so as to open the test circuit when the differential release has been actuated.
  • the document EP 0 295 167 describes a test set for differential electrical protection apparatus.
  • the test assembly comprises a conductive blade with two branches, one of the branches providing the function of the test push switch and the other branch ensuring the self-cutting. being separated from its contact position by an element of the contact opening mechanism which is intended to open the electrical circuit to be protected.
  • the document GB 2026244 A discloses a differential switch according to the preamble of claim 1.
  • the aim of the invention is to improve such a differential switch provided with a test circuit, particularly with regard to the self-cutting function.
  • the elements for performing the self-cutting function of such a differential switch are directly related to the elements for performing the function of opening the electrical circuit to be protected.
  • the self-cutting blade being directly connected to the pivoting contact and the self-cutting branch being disposed opposite the self-cutting blade, these elements can be mounted directly on the mechanism of the differential switch. It is not necessary, for example, to use the housing of the differential switch to support these elements, which makes it possible not to depend on the dimensional tolerances or shape variations of an element attached to the mechanism, such as than the case.
  • the arrangement of the conductive branch extending in a direction transverse to the axis of rotation of the pivoting contact allows not only to take advantage of the pivoting of the contact to perform the self-cutting function, but also allows to take advantage of this pivoting in a manner almost independent of the position variation of the axis of rotation.
  • the axis of rotation of the pivoting contact will tend to move along a direction substantially parallel to the self-cutting branch, which will have little effect on the contact between the self-cutting blade and the self-cutting branch since this contact essentially depends on the position of the self-cutting blade with respect to said axis of rotation to which it is linked.
  • the pivoting contact further comprises a protruding spacer and adapted to lift the autocoupure branch when the pivoting contact is in the open position.
  • the spacer may be a tab of insulating material disposed transversely to the self-cutting branch.
  • This spacer makes it possible to increase the distance between the self-cutting branch and the self-cutting blade when the pivoting contact is in the open position, which ensures better insulation between these two parts and makes it possible to be even less dependent on manufacturing tolerances and deformations of the differential switch.
  • the spacer may comprise a notch adapted to guide the self-cutting branch.
  • the spacer and the self-cutting blade are arranged face to face and on either side of the axis of rotation of the pivoting contact.
  • This arrangement allows the chopper blade and the chopper branch to cooperate with each other so that when the chopper blade moves away from the chopper branch, the spacer moves up and when the chopper blade gets closer to the branch of the autocenter, the spacer loosens it.
  • the effects of these two elements thus accumulate advantageously.
  • the differential switch may further comprise a first stop finger disposed in the path of the self-cutting branch and adapted to limit the lifting thereof. Similarly, it may also include a second stop finger disposed vis-à-vis the first stop finger and the autocoupure branch can be maintained between the first stop finger and the second stop finger.
  • test contactor is thus produced in an economical and reliable manner.
  • the pusher spring and the chopper branch can be made in one piece, the number of elements participating in the test circuit being thereby greatly reduced.
  • the pivoting contact can be mounted on a pivoting support, said support being made of insulating material and having a projecting tongue forming the spacer.
  • the movable contact may be connected to a conductive contact spring blade which has a projecting portion forming the self-cutting blade.
  • the contacts 1, 2 are biased by an opening spring 3 so that their position at rest is the open position.
  • the movable contact 2 comprises a key member 4 intended to be positioned against a similar key member 5 belonging to the fixed contact 1, when the movable contact 2 is in its closed position.
  • the contact member 4 of the movable contact 2 is mounted in an insulating support 6 and wedged by a contact spring-blade 7, the latter also performing the function of self-cutting blade as explained below.
  • the insulating support 6 is pivotally mounted about an axis 8 to give the moving contact the degree of freedom necessary to occupy its closed positions ( Figures 1 and 2 ) and openness ( Figures 3 and 4 ).
  • the insulating support 6 further comprises a tongue 14 protruding vis-à-vis the spring-contact blade 7, these two elements 7, 14 extending in a direction transverse to the axis 8 and being arranged on the side and the tongue 14 has, on its upper part, a notch 19 provided for cooperation with a self-cutting branch 10.
  • lever 9 to be accessible from the outside so that the user can handle it. It controls the mechanism of the differential switch and has two positions corresponding to the two positions of the movable contact 2 of the figures 1 and 3 .
  • a single piece comprising a self-cutting branch 10 and a push spring 11 is disposed on the mechanism so that the self-cutting branch extends to the top of the insulating support 6, transversely to the axis 8.
  • the autocuture branch 10 is further held in place between two stop fingers 12, 13 attached to a fixed portion of the differential switch (not shown).
  • a pusher spring 11 formed of a helical winding and a projecting branch 15 disposed opposite a conductive key 16.
  • This conductive button 16 is intended to be connected to a terminal of the test resistor (not shown) whose other terminal is connected to a pole of the differential switch.
  • test button 17 is further provided to cooperate with the projecting limb 15.
  • the test button is intended to be slidably held by the housing (not shown) of the differential switch to be able to occupy a rest position in which it does not urge the protruding limb 15 and an operating position in which it pushes (under the action of the user) the limb protruding against the key 16.
  • FIG 5 uses the same elements of Figures 1 to 4 with, in addition, a second pair of contacts 18 simultaneously controlled contacts 1, 2 described above, which is common for a differential switch.
  • the tongue 14 is away from the autocoupure branch 10 while the cutter blade 7 is positioned against the autocoupure branch 10.
  • the holding of the latter by the stop fingers 12, 13 allows to take advantage of its elasticity to ensure good electrical contact with the self-cutting blade 7.
  • the self-cutting function is therefore not activated and the action on the test button 17 effectively implements the test function.
  • the tongue 14 is then held against the autocoupure branch 10 and raises it, while the autocutter blade 7 is away.
  • the distance between the chopper blade 7 and the chopper branch 10 depends on the distance between the tongue 14 (and therefore between the axis 8) and the stop fingers 12, 13.
  • the self-cutting function is thus activated, implying that even if pressure is applied to the test button 17 to make contact between the branch 15 and the key 16, the electrical continuity of the test circuit will not be established.
  • the invention is not limited to the examples described and shown, particularly with regard to the arrangement of the conductive pad 16 and the pusher spring 11.

Landscapes

  • Push-Button Switches (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (9)

  1. Fehlerstromschutzschalter mit:
    - einem festen Leistungskontakt (1) und einem schwenkbaren Leistungskontakt (2), der eine geschlossene Stellung, in der er gegen den festen Kontakt (1) angeordnet ist, und eine geöffnete Stellung, in der er von dem festen Kontakt (1) entfernt ist, aufweist;
    - einem Prüfschütz (15, 16, 17);
    - einem selbsttätig unterbrechenden leitfähigen Arm (10), der mit einer Klemme des Prüfschützes (15, 16, 17) verbunden ist und sich quer zur Drehachse (8) des schwenkbaren Kontakts (2) erstreckt; und
    - einem vorstehenden Abstandsstück (14), das von dem schwenkbaren Kontakt (2) getragen wird;
    dadurch gekennzeichnet, dass er ferner eine selbsttätig unterbrechende leitfähige Zunge (7) umfasst, die mit dem schwenkbaren Kontakt (2) verbunden ist und gegenüber dem selbsttätig unterbrechenden Arm (10) derart angeordnet ist, dass die selbsttätig unterbrechende Zunge (7) an dem selbsttätig unterbrechenden Arm (10) angeordnet ist, wenn sich der schwenkbare Kontakt (2) in der geschlossenen Stellung befindet, und die selbsttätig unterbrechende Zunge (7) von dem selbsttätig unterbrechenden Arm (10) entfernt ist, wenn sich der schwenkbare Kontakt (2) in der geöffneten Stellung befindet;
    wobei das Abstandsstück (14) den selbsttätig unterbrechenden Arm (10) anzuheben vermag, wenn sich der schwenkbare Kontakt (2) in der geöffneten Stellung befindet,
    wobei das Abstandsstück und die selbsttätig unterbrechende Zunge (7) einander gegenüberliegend und auf beiden Seiten der Drehachse (8) des schwenkbaren Kontakts (2) angeordnet sind.
  2. Fehlerstromschutzschalter nach Anspruch 1,
    dadurch gekennzeichnet, dass das Abstandsstück (14) eine Lasche aus Isolierstoff ist, die quer zu dem selbsttätig unterbrechenden Arm (10) angeordnet ist.
  3. Fehlerstromschutzschalter nach Anspruch 2,
    dadurch gekennzeichnet, dass das Abstandsstück (14) eine Aussparung (19) aufweist, die den selbsttätig unterbrechenden Arm (10) zu führen vermag.
  4. Fehlerstromschutzschalter nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, dass er ferner einen Anschlagfinger (12) umfasst, der im Weg des selbsttätig unterbrechenden Arms (10) angeordnet ist und dessen Anheben zu begrenzen vermag.
  5. Fehlerstromschutzschalter nach Anspruch 4,
    dadurch gekennzeichnet, dass er ferner einen zweiten Anschlagfinger (13) umfasst, der gegenüber dem ersten Anschlagfinger (12) angeordnet ist, und dass der selbsttätig unterbrechende Arm (10) zwischen dem ersten Anschlagfinger (12) und dem zweiten Anschlagfinger (13) gehalten wird.
  6. Fehlerstromschutzschalter nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass das Prüfschütz umfasst:
    - einen Prüfknopf (17), der eine Ruhestellung und eine Betätigungsstellung aufweist;
    - eine Druckfeder (11, 15), die mit dem selbsttätig unterbrechenden Arm (10) verbunden und gegenüber einer leitfähigen Taste (16) angeordnet ist,
    wobei die Druckfeder (11, 15) durch den Prüfknopf (17) solchermaßen betätigt wird, dass die Feder (11, 15) von der Taste (16) entfernt ist, wenn sich der Prüfknopf (17) in Ruhestellung befindet, und die Feder (11, 15) mit der Taste (16) in Kontakt ist, wenn sich der Prüfknopf (17) in der Betätigungsstellung befindet.
  7. Fehlerstromschutzschalter nach Anspruch 6,
    dadurch gekennzeichnet, dass die Druckfeder (11, 15) und der selbsttätig unterbrechende Arm (10) aus einem Stück gebildet sind.
  8. Fehlerstromschutzschalter nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, dass der schwenkbare Kontakt (2) auf einem schwenkbaren Träger (6) montiert ist, wobei der Träger (6) aus Isolierstoff ist und eine vorstehende Lasche (14) umfasst, die das Abstandsstück bildet.
  9. Fehlerstromschutzschalter nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass der bewegliche Kontakt (2) mit einer Kontaktfeder (7) verbunden ist, die ein vorstehendes Stück aufweist, das die selbsttätig unterbrechende Zunge bildet.
EP04767737A 2003-07-21 2004-07-20 Mit einer testschaltung ausgestatteter differenz-schalter Not-in-force EP1647041B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04767737T PL1647041T3 (pl) 2003-07-21 2004-07-20 Wyłącznik różnicowy, zawierający obwód testowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0308867A FR2858108B1 (fr) 2003-07-21 2003-07-21 Interrupteur differentiel comportant un circuit de test
PCT/FR2004/001919 WO2005010905A2 (fr) 2003-07-21 2004-07-20 Interrupteur différentiel comportant un circuit de test

Publications (2)

Publication Number Publication Date
EP1647041A2 EP1647041A2 (de) 2006-04-19
EP1647041B1 true EP1647041B1 (de) 2008-09-10

Family

ID=33560964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04767737A Not-in-force EP1647041B1 (de) 2003-07-21 2004-07-20 Mit einer testschaltung ausgestatteter differenz-schalter

Country Status (10)

Country Link
EP (1) EP1647041B1 (de)
CN (1) CN100470706C (de)
AT (1) ATE408233T1 (de)
BR (1) BRPI0412068A (de)
DE (1) DE602004016518D1 (de)
ES (1) ES2314441T3 (de)
FR (1) FR2858108B1 (de)
PL (1) PL1647041T3 (de)
RU (1) RU2346351C2 (de)
WO (1) WO2005010905A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105510818B (zh) * 2015-12-30 2019-02-05 三信国际电器上海有限公司 断路器及其试验装置和方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1992095U (de) * 1968-04-05 1968-08-22 Siemens Aktiengesellschaft, 1000 Berlin und 8000 München Fehlerstromschutzschalter mit einer von einer Prüftaste zu betätigenden Prüfeinrichtung
BE867767A (fr) * 1977-04-14 1978-10-02 Ave Belli Andrea Interrupteur differentiel a grande sensibilite
DE8702467U1 (de) * 1987-02-18 1987-04-02 Brown, Boveri & Cie Ag, 6800 Mannheim, De
FR2616585A1 (fr) * 1987-06-11 1988-12-16 Hager Electro Dispositif de test pour appareil electrique differentiel de protection incorporant ce dispositif, notamment pour disjoncteur differentiel

Also Published As

Publication number Publication date
CN100470706C (zh) 2009-03-18
ATE408233T1 (de) 2008-09-15
FR2858108A1 (fr) 2005-01-28
RU2006105204A (ru) 2006-06-27
BRPI0412068A (pt) 2006-11-21
WO2005010905A3 (fr) 2005-03-24
FR2858108B1 (fr) 2006-01-06
RU2346351C2 (ru) 2009-02-10
WO2005010905A2 (fr) 2005-02-03
ES2314441T3 (es) 2009-03-16
PL1647041T3 (pl) 2009-03-31
CN1826677A (zh) 2006-08-30
DE602004016518D1 (de) 2008-10-23
EP1647041A2 (de) 2006-04-19

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