EP0557214B1 - Einpol- und Nulleiterdifferentialschutzschalter mit Prüfkreis - Google Patents

Einpol- und Nulleiterdifferentialschutzschalter mit Prüfkreis Download PDF

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Publication number
EP0557214B1
EP0557214B1 EP19930420066 EP93420066A EP0557214B1 EP 0557214 B1 EP0557214 B1 EP 0557214B1 EP 19930420066 EP19930420066 EP 19930420066 EP 93420066 A EP93420066 A EP 93420066A EP 0557214 B1 EP0557214 B1 EP 0557214B1
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EP
European Patent Office
Prior art keywords
neutral
phase
primary
winding
contact
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.)
Expired - Lifetime
Application number
EP19930420066
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English (en)
French (fr)
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EP0557214A1 (de
Inventor
François Reynaud
Maurice Burrial
Alain Bruno
Michel Vieux
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.)
Schneider Electric SE
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Schneider Electric SE
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Publication date
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Publication of EP0557214A1 publication Critical patent/EP0557214A1/de
Application granted granted Critical
Publication of EP0557214B1 publication Critical patent/EP0557214B1/de
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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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
    • 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
    • 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

Definitions

  • connection conductors of the primary phase and neutral windings are located on the same side of the toroid in an interval arranged between the downstream phase terminal and the exhaust zone of the extinction chamber of the phase circuit.
  • the four openings extend in the same plane perpendicular to the partition wall, and are offset vertically from each other by reduced distances.
  • Soldering of the connections must be done manually with the addition of tin. This results in production rate problems and problems with dielectric strength caused by bringing the conductive parts to different potentials.
  • the object of the invention is to improve the dielectric strength of a single-pole and neutral differential circuit breaker, and to allow the electrical connection of the differential transformer by means of an automatic welding machine.
  • the differential circuit breaker according to the invention is characterized in that the toroid is disposed between the first and second pairs of connection conductors, that the insertion of the primary phase and neutral windings takes place either upstream and downstream, either downstream and upstream of the phase and neutral circuits, and both ends of the test circuit are connected simultaneously either downstream or upstream of the phase and neutral.
  • connection conductors have protruding tongues of conductive material, arranged in overhang, and extending parallel to each other in a direction perpendicular to the partition wall, the end of each tongue being provided with '' a positioning recess into which the corresponding end of the primary phase or neutral winding.
  • the arrangement according to the invention allows the passage of the electrodes of a welding machine for the automatic connection of the primary windings to the tongues.
  • the dielectric strength is improved because the potential difference is transferred on either side of the toroid.
  • the first pair of connection conductors of the primary phase winding is electrically connected to the bimetallic strip and to the upstream phase terminal.
  • the second pair of connection conductors of the primary neutral winding is in electrical connection with the downstream neutral terminal, and the fixed neutral contact.
  • the electrical connection of the test circuit takes place in the second compartment by means of a feed-through lug for the interconnection of the resistor with the arcing horn in connection with the fixed phase contact, and a connecting conductor connected to the connecting conductor in connection with the fixed neutral contact.
  • Figure 1 is a perspective view of the electrical diagram of the unipolar and neutral differential circuit breaker according to an embodiment of the invention.
  • FIG. 2 shows a schematic view of the neutral circuit of the circuit breaker of FIG. 1.
  • FIG. 3 represents a schematic view of the phase circuit of the circuit breaker of FIG. 1.
  • Figure 4 is a schematic view of the second differential protection compartment.
  • FIG. 5 shows a detailed perspective view of the second compartment of FIG. 4.
  • FIG. 6 represents an enlarged view of the test circuit associated with the second triggering mechanism.
  • a single-pole and neutral differential circuit breaker 10 is housed in an insulating housing 12, subdivided by a central wall 14 of separation into two adjacent parts, comprising a first compartment 16 circuit breaker and a second compartment 18 with differential protection of the type described by way of example in French patent 2,662,017 of the applicant.
  • the first circuit breaker compartment 16 comprises a phase circuit 20 and a neutral circuit 22 separated from each other by an insulating partition 24, and connected respectively to a first pair of phase terminals 26, 28 and a second pair of neutral terminals 30.32.
  • the two upstream terminals 26.30 are juxtaposed on the same narrow side face 31 of the housing 12, while the two downstream terminals 28.32 are arranged side by side on the other opposite face 33.
  • the phase circuit 20 (FIGS. 1 and 3) comprises a movable contact 34 electrically connected to the upstream terminal 26 by a bimetallic trip unit 36, and a fixed contact 38 connected to a coil 40 for exciting an electromagnetic trip device 42.
  • a first arc extinguishing chamber 44 is arranged between the electromagnetic trip device 42 and the bottom of the housing 12, and comprises a packet of arc deionization sheets drawn between the contacts 34, 38.
  • the neutral circuit 22 ( Figures 1 and 2) has a fixed contact 46, a movable contact 48 electrically connected by a braid 49 to terminal 30, and a second arc extinguishing chamber 50
  • the neutral circuit 22 is located to the left of the phase circuit 20 and does not have a thermomagnetic trip device.
  • the two movable contacts 34, 48 are actuated by a first mechanism 52 with manual control by a lever 53 and automatic by the thermal bimetal trigger 36 and the electromagnetic trigger 42 with coil 40.
  • the first mechanism 52 can be of the type described in the document FR-A-2.616.583.
  • the second compartment 18 ( Figures 1, 4 and 5) is located to the right of the first compartment 16, and contains a differential transformer 54 having a secondary winding 59 connected to a trigger relay 56 cooperating with a second mechanism 58 with handle 60 for resetting .
  • the second mechanism 58 is coupled with the first mechanism 52 by means of mechanical connections (not shown) authorizing a tripping action of the circuit breaker 10 when a differential tripping order is issued by the relay 56, and a continued action of resetting the second mechanism 58.
  • the second mechanism 58 may be of the type described in document FR-A-2,628,262.
  • the differential transformer 54 includes a magnetic toroid 62 carrying a primary phase winding 64, a primary neutral winding 66, and the secondary measurement winding 59.
  • a ground fault causes an imbalance between the primary currents flowing through the primary windings 64 , 66, and generates an induced voltage across the secondary winding 59 to energize the trigger relay 56.
  • the primary neutral winding 66 is inserted in series in the neutral circuit 22 by interruption of the connection between the fixed neutral contact 46, and the downstream terminal 32 of neutral ( Figure 1 and 2).
  • the two orifices 80, 82 of the connection conductors 72, 74 are separated from each other by a predetermined interval, being located on the same side, in particular on the left, of the differential transformer 54.
  • the two openings 76,78 offset from the other pair of connection conductors 68,70 associated with the primary phase winding 64 are arranged to the right of the differential transformer 54.
  • the primary phase winding 64 is inserted upstream of the phase circuit 20, that is to say in the portion located between the phase contacts 34, 38 and the upstream phase terminal 26.
  • the primary neutral winding 66 is inserted downstream of the neutral circuit 22, that is to say in the portion located between the neutral contacts 46, 48 and the downstream neutral terminal 32.
  • connection conductor 70 passing through the lower orifice 78 is connected to the base of the bimetallic strip 36, and the other connection conductor 68 passing through the upper orifice 76 is connected to the contact pad of the upstream terminal 26 of the phase.
  • the four connecting conductors 68.70; 72,74 have projecting tongues of conductive material, arranged in overhang and extending parallel to one another in a direction perpendicular to the wall 14 median.
  • Each tab (FIGS. 5 and 6) is equipped with a positioning recess 84 into which the corresponding end of the primary phase or neutral winding 64,66 is inserted.
  • the two zones of interruption of the phase 20 and neutral 22 circuits for the electrical insertion of the primary windings 64, 66 take place in different places, arranged on either side of the differential transformer 54, and especially in the vicinity of opposite faces 31.33 of the housing 12.
  • Such an arrangement facilitates the automation of the electrical welding operations of the ends of the primary windings 64, 66 in the recesses 84 of the tongues and, on the other hand, improves the dielectric strength of the circuit breaker 10.
  • the second mechanism 58 is equipped with a test device 86 (FIG. 6) housed in the second compartment 18, and having a push button 88 intended to be actuated by sliding between a raised position of rest and a depressed working position.
  • a resistor 90 is inserted into a test circuit 92 connected between a lug 94 for interconnecting the phase circuit 20, and the connection conductor 72 of the primary neutral winding 66.
  • the resistor 90 is connected in series with a first switch 96 protection activated by the mechanism 58, and a second test switch 98 controlled by the push button 88.
  • the protection switch 96 is formed by an elastic conductive blade 100 bearing in the closed position on an end wire resistance 90 when the mechanism 58 is in the armed state.
  • the test switch 98 comprises a strand 102 of a conducting spring intended to cooperate in the depressed position of the push button 88, with a connecting conductor 104 electrically connected to the connecting conductor 72.
  • the resistor 90 is switched on when the two switches 96.98 are closed, that is to say in the armed state of the mechanism 58, and in the depressed working position of the push button 88. This results in a current d test in the resistor 90, which is detected by the differential transformer 54 which triggers the second mechanism 58.
  • the pivoting of the rotary plate 106 of the mechanism 58 causes the first protective switch 96 to open automatically, causing the interruption of the test current in the resistor 90, even if the push button 88 remains held in the depressed position.
  • test circuit 92 takes place in the second compartment 18, and that the taking of information from the test takes place downstream of the neutral and phase contacts.
  • the tab 94 for interconnecting the resistor 90 with the phase circuit 20 crosses the middle wall 14, and is at the potential of the upper arcing horn 108 in connection with the fixed phase contact 38.
  • the other end of the test circuit 92 is formed by the connection conductor 104 connected to the connection conductor 72 in connection with the fixed neutral contact 46.
  • Such a connection of the test circuit 92 downstream of the phase and neutral contacts serves to guarantee the reliable operation of the differential circuit breaker 10 during a test, in particular avoiding the transfer of the upstream phase potential downstream of the neutral circuit, or the transfer of the upstream neutral potential downstream of the phase circuit during actuation of the push button to the depressed position.
  • the two ends of the test circuit 92 instead of being connected downstream (FIG. 6), can be connected simultaneously upstream with the phase contacts 34,38 and neutral contacts 46,48.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Protection Of Transformers (AREA)

Claims (4)

  1. Einpoliger Differenzstrom-Leistungsschalter (10) mit Neutralleiter in einem Isolierstoffgehäuse (12), das durch eine Trennwand (14) in zwei aneinandergrenzende Bereiche unterteilt ist, die
    - ein erstes Leistungsschalter-Abteil (16), welches einen Phasenleiterkreis (20), bestehend aus einem feststehenden Phasenleiterkontakt (38), einem beweglichen Phasenleiterkontakt (34) sowie einem mit einem Bimetall (36) und einer Spule (40) bestückten thermomagnetischen Auslöser, einen Neutralleiterkreis (22), bestehend aus einem feststehenden Neutralleiterkontakt (46) und einem beweglichen Neutralleiterkontakt (48), ein erstes Klemmenpaar mit einer einspeiseseitigen Phasenleiterklemme (26) und einer abgangsseitigen Phasenleiterklemme (28), ein zweites Klemmenpaar mit einer einspeiseseitigen Neutralleiterklemme (30) und einer abgangsseitigen Neutralleiterklemme (32) sowie einen ersten Mechanismus (52) zur manuellen Betätigung über einen Kipphebel (53) bzw. automatischen Betätigung über den thermomagnetischen Auslöser enthält,
    - ein zweites Differenzstromschutz-Abteil (18), welches einen Summenstromwandler (54) mit Ringmagnetkern (62) enthält, der eine Phasenleiter-Primärwicklung (64), eine Neutralleiter-Primärwicklung (66) sowie eine Meß-Sekundärwicklung trägt, die einem Auslöserelais (56) zugeordnet ist, welches mit einem, mechanisch mit dem ersten Mechanismus (52) gekoppelten zweiten Auslösemechanismus (58) sowie mit einem, einen Prüfwiderstand (90) und einen Drucktaster (88) umfassenden Prüfstromkreis (92) zusammenwirkt,
    - und in der Trennwand (14) ausgebildete Öffnungen (76, 78; 80, 82) zur Durchführung der Anschlußleiter (68, 70; 72, 74) umfassen, die das Einsetzen der Phasenleiter-Primärwicklung (64) und der Neutralleiter-Primärwicklung (66) in den Phasenleiterkreis (20) bzw. den Neutralleiterkreis (22) ermöglichen,
    - wobei die einspeiseseitigen Phasenleiterklemmen (26) und Neutralleiterklemmen (30) nebeneinander auf der gleichen schmalen Seitenfläche (31) des Gehäuses (12)
    - und die abgangsseitigen Phasenleiterklemmen (28) und Neutralleiterklemmen (32) nebeneinander auf der gegenüberliegenden schmalen Seitenfläche (33) des Gehäuses (12) angeordnet sind,
    dadurch gekennzeichnet, daß der Ringkern (62)zwischen dem ersten, die Öffnungen (76, 78) durchquerenden Anschlußleiterpaar (68, 70) und dem zweiten, die Öffnungen (80, 82) durchquerenden Anschlußleiterpaar (72, 74) angeordnet ist, daß die Phasenleiter-Primärwicklung (64) und die Neutralleiter-Primärwicklung (66) entweder auf der Einspeise- und auf der Abgangsseite oder auf der Abgangs- und auf der Einspeiseseite des Phasenleiterkreises (20) bzw. des Neutralleiterkreises (22) eingesetzt und die beiden Enden des Prüfstromkreises (92) zusammen entweder auf der Abgangsseite oder der Einspeiseseite der Phasenleiterkontakte (34, 38) bzw. der Neutralleiterkontakte (46, 48) angeschlossen werden.
  2. Differenzstrom-Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß die vier Anschlußleiter (68, 70; 72, 74) einseitig gelagerte hervorstehende Zungen aus einem leitenden Material aufweisen, die parallel zueinander und rechtwinklig zur Trennwand (14) angeordnet sind, wobei jede Zunge an ihrem Ende eine Positionieraufnahme (84) aufweist, in die das zugeordnete Ende der Phasenleiter-Primärwicklung (64) bzw. der Neutralleiter-Primärwicklung (66) eingesetzt wird.
  3. Differenzstrom-Leistungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das erste Anschlußleiterpaar (68, 70) der Phasenleiter-Primärwicklung (64) elektrisch an das Bimetall (36) und die einspeiseseitige Phasenleiterklemme (26) angeschlossen ist und daß das zweite Anschlußleiterpaar (72, 74) der Neutralleiter-Primärwicklung (66) mit der abgangsseitigen Neutralleiterklemme (32) und dem feststehenden Neutralleiterkontakt (46) elektrisch verbunden ist.
  4. Differenzstrom-Leistungsschalter nach Anspruch 3, dadurch gekennzeichnet, daß der elektrische Anschluß des Prüfstromkreises (92) im zweiten Abteil (18) mit Hilfe einer Durchführungslasche (94) zur elektrischen Verbindung des Widerstands (90) mit dem an den feststehenden Phasenleiterkontakt (38) angeschlossenen Lichtbogenhorn (108) sowie einem Verbindungsleiter (104) erfolgt, der an den mit dem feststehenden Neutralleiterkontakt (46) verbundenen Anschlußleiter (72) angeschlossen ist.
EP19930420066 1992-02-21 1993-02-11 Einpol- und Nulleiterdifferentialschutzschalter mit Prüfkreis Expired - Lifetime EP0557214B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202137A FR2687838B1 (fr) 1992-02-21 1992-02-21 Disjoncteur differentiel unipolaire et neutre et a circuit test.
FR9202137 1992-02-21

Publications (2)

Publication Number Publication Date
EP0557214A1 EP0557214A1 (de) 1993-08-25
EP0557214B1 true EP0557214B1 (de) 1996-06-12

Family

ID=9426986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930420066 Expired - Lifetime EP0557214B1 (de) 1992-02-21 1993-02-11 Einpol- und Nulleiterdifferentialschutzschalter mit Prüfkreis

Country Status (6)

Country Link
EP (1) EP0557214B1 (de)
CN (1) CN1031674C (de)
DE (1) DE69303056T2 (de)
ES (1) ES2090927T3 (de)
FR (1) FR2687838B1 (de)
RU (1) RU2077085C1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715767B1 (fr) * 1994-02-02 1996-04-26 Legrand Sa Disjoncteur différentiel unipolaire et neutre.
FR2720548B1 (fr) * 1994-05-31 1996-08-30 Legrand Sa Dispositif de déclenchement différentiel.
CA2320057A1 (en) * 1998-12-14 2000-06-22 Murali K. Magham Circuit breaker with multiple test switch assembly
DE102004005985A1 (de) * 2004-02-06 2005-09-08 Siemens Ag Fehlerstromschutzschaltvorrichtung
DE102004034859A1 (de) * 2004-07-19 2006-02-16 Siemens Ag Schutzschaltgerät in Schmalbauweise
ES2347089T3 (es) * 2007-07-26 2010-10-25 Bticino S.P.A. Dispositivo de corriente residual para un disyuntor electrico.
DE102007048412A1 (de) * 2007-10-09 2009-04-23 Siemens Ag Schutzschalteinrichtung und Schutzschaltgerät
FR2923941B1 (fr) * 2007-11-16 2014-09-05 Schneider Electric Ind Sas Appareil electrique de coupure tel un disjoncteur ou un interrupteur
FR2923939A1 (fr) * 2007-11-16 2009-05-22 Schneider Electric Ind Sas Appareil de coupure electrique
FR2927195A1 (fr) * 2008-02-04 2009-08-07 Hager Electro S A S Soc Par Ac Appareil electrique de coupure a connexion haute et basse
EP2685484B1 (de) * 2011-03-09 2018-01-17 Seari Electric Technology Co., Ltd. Schutzschalter zur optimierung einer raumzuweisung
JP5971585B2 (ja) * 2012-04-09 2016-08-17 パナソニックＩｐマネジメント株式会社 回路遮断器の外部引外し装置
JP5971584B2 (ja) * 2012-04-09 2016-08-17 パナソニックＩｐマネジメント株式会社 回路遮断器の外部引外し装置
FR3057389B1 (fr) * 2016-10-11 2020-12-25 Schneider Electric Ind Sas Appareillage de coupure electrique differentiel comportant un dispositif de test de la fonction differentielle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737618C3 (de) * 1977-08-20 1980-03-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anschluß des Stromwandlers eines mit Leitungsschutzschaltern kombinierten Fehlerstromauslösers
FR2662017B1 (fr) * 1990-05-10 1996-07-26 Merlin Gerin Disjoncteur differentiel unipolaire et neutre.
FR2663153B1 (fr) * 1990-06-07 1992-09-11 Legrand Sa Dispositif de declenchement differentiel.

Also Published As

Publication number Publication date
ES2090927T3 (es) 1996-10-16
FR2687838B1 (fr) 1994-04-08
DE69303056T2 (de) 1996-12-19
CN1075820A (zh) 1993-09-01
RU2077085C1 (ru) 1997-04-10
CN1031674C (zh) 1996-04-24
EP0557214A1 (de) 1993-08-25
DE69303056D1 (de) 1996-07-18
FR2687838A1 (fr) 1993-08-27

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