EP0456585B1 - Einpol- und Nulleiter-Differentialschutzschalter - Google Patents

Einpol- und Nulleiter-Differentialschutzschalter Download PDF

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Publication number
EP0456585B1
EP0456585B1 EP91420140A EP91420140A EP0456585B1 EP 0456585 B1 EP0456585 B1 EP 0456585B1 EP 91420140 A EP91420140 A EP 91420140A EP 91420140 A EP91420140 A EP 91420140A EP 0456585 B1 EP0456585 B1 EP 0456585B1
Authority
EP
European Patent Office
Prior art keywords
neutral
phase
circuit
circuit breaker
compartment
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
EP91420140A
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English (en)
French (fr)
Other versions
EP0456585A1 (de
Inventor
Michel Lazareth
Noel Lecorre
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0456585A1 publication Critical patent/EP0456585A1/de
Application granted granted Critical
Publication of EP0456585B1 publication Critical patent/EP0456585B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • 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
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H2089/005—Multi-purpose combinations, e.g. LS/DI, LS/FI, of normal protective circuit breakers with known other forms of protection, e.g. earthfaults, differential, unbalance

Definitions

  • a known differential circuit breaker of the kind mentioned (EP-A-196,241) comprises a one-piece housing containing the circuit breaker part with neutral cut and the differential protection part, the latter being arranged on the side of the neutral contacts.
  • the neutral circuit is also interposed between the phase circuit and the protection part differential, which facilitates the passage of the connection conductors for the insertion of the primary phase and neutral windings in the respective phase and neutral circuits.
  • the connection of the primary neutral winding presents no difficulty, since the parts to be connected are adjacent.
  • the phase circuit is interrupted for the insertion of the primary phase winding between the free end of the bimetallic strip and the coil of the thermomagnetic trip device, and the corresponding connection conductors pass through the volume delimited by the circuit of neutral without interfering with it.
  • Such an arrangement makes it possible to obtain good dielectric strength of the circuit breaker, but requires positioning to the left of the differential part.
  • it is the phase circuit which is interposed between the neutral circuit and the differential part, with compulsory passage of the internal conductors for connecting the primary neutral winding through the volume delimited by the phase circuit.
  • the filling of this volume is more important than that of the neutral volume without a thermomagnetic trip device. It is then necessary to find suitable places in the separation wall for the orifices for passage of the internal neutral conductors, and to avoid any contact with the phase circuit in order to meet the dielectric requirements of the differential circuit breaker. This results in a dispersion of the passage openings in the wall, and difficulties in electrical connection of the differential part.
  • the object of the invention is to improve the electrical connection of the primary windings of a unipolar and neutral differential switch with a one-piece housing.
  • the differential circuit breaker according to the invention is characterized in that the phase circuit is adjacent to the second compartment, one of the connection conductors of the primary phase winding being connected to the contact range of the nearest phase terminal, and the other conductor being connected to the rear end of the coil opposite the fixed phase contact, and that the orifices are located in the interval arranged between said phase terminal, and the exhaust zone of the first arc extinguishing chamber.
  • the primary phase winding is connected by interrupting the connecting conductor between the coil and the terminal contact area, which avoids the use of additional connection parts. This connection presents no difficulty since the parts to be connected are adjacent.
  • the differential circuit breaker comprises a cut neutral circuit housed to the left of the phase circuit in the first compartment, and having a pair of separable neutral contacts.
  • the phase circuit is then arranged between the neutral circuit and the second compartment, with internal neutral conductors passing through the volume of the phase circuit, one of the connection conductors of the primary neutral winding being connected to the contact range of the nearest neutral terminal, and the other conductor being connected to a connecting conductor with the fixed neutral contact.
  • the passage openings in said circuit breaker interval extend in a vertical plane perpendicular to the wall and to the bottom of the housing.
  • the differential circuit breaker comprises a passing neutral circuit, disposed in the second compartment.
  • a single-pole and neutral differential circuit breaker 10 is housed in an insulating casing 12, subdivided by a central wall 14 of separation into two adjacent parts, comprising a first circuit breaker compartment and a second differential protection compartment.
  • 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 upstream terminals 26.30 are juxtaposed on the same narrow side face 31 of the housing 12, while the downstream terminals 28.32 are arranged side by side on the other opposite face 33.
  • the phase circuit 20 ( Figures 1 and 4) includes a movable contact 34 electrically connected to the upstream terminal 26 by a trip device. bimetallic strip 36, and a fixed contact 38 connected to an anterior end 39 of a coil 40 for exciting an electromagnetic trip device 42.
  • a first arc extinguishing chamber 44 is disposed between the electromagnetic trip device 42 and the bottom of the housing 12, and comprises a packet of sheets for deionizing the arc drawn between the contacts 34, 38.
  • the neutral circuit 22 ( Figures 1 and 5) has a fixed contact 46, a movable contact 48 electrically connected to the terminal 30, and a second arc extinguishing chamber 50.
  • the circuit neutral 22 is located to the left of phase circuit 20 and does not have a trigger.
  • 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 and 3) is located to the right of the first compartment 16, and contains a differential transformer 54 and a trigger relay 56 cooperating with a second mechanism 58 with handle 60 for reset.
  • the second mechanism 58 is interconnected, 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 an action of automatic resetting of the relay 56 after a tripping operation of the circuit breaker 10.
  • the second mechanism 58 may be of the type described in the document FR-A-2.628.262.
  • the differential transformer 54 ( Figures 1 and 6) comprises a magnetic toroid 62 carrying a primary phase winding 64, a primary neutral winding 66, and a secondary measurement winding (not shown), the latter being connected. to trip relay 56.
  • An earth fault results in an imbalance between the currents flowing through the primary windings 64,66 and generates a secondary current in the measurement winding for the supply of relay 56.
  • the orifices 76,78; 80.82 lie substantially in the same vertical connection plane extending perpendicular to the wall 14 and to the bottom of the housing 12, being arranged in the interval 83 between the terminals 28.32, and the rear exhaust zone of the two arc extinguishing chambers 44, 50.
  • the primary phase winding 64 is inserted in series into the phase circuit 20 by interrupting the connection between terminal 28 and the rear end 84 of the coil 40, located opposite the end 39 associated with the contact. fixed 38.
  • the connection conductor 68 passing through the orifice 76 is connected in the first compartment 16 at the end 39 of the coil 40, and the other connection conductor 70 passing through the orifice 78 is connected to the contact pad phase terminal 28 ( Figures 1 and 4).
  • the primary neutral winding 66 is inserted in series into the neutral circuit 22 by interrupting the connection between the fixed neutral contact 46 and the neutral terminal 32. ( Figures 1 and 5).
  • the connection conductor 72 passing through the orifice 80 is connected to an extension of the fixed contact 46, and the other connection conductor 74 is connected to the contact pad of the neutral terminal 32.
  • connection conductors 72, 74, of the primary neutral winding 66 pass through the partition 24 which subdivides the first compartment 16 circuit breaker.
  • the length of these conductors 72.74 is greater than that of the other connection conductors 68.70 of the primary phase winding 64.
  • the volume delimited by the phase circuit 20 is crossed by the conductors 72.74 in the lower part of the housing 12, that is to say in a place devoid of active parts of the phase circuit 20.
  • the four passage openings 76, 78, 80, 82 are superimposed and staggered at regular intervals in said vertical connection plane, so to facilitate the electrical connection of the primary windings 64,66.
  • the differential circuit breaker 100 has a passing neutral circuit, that is to say not cut.
  • the first compartment 160 only comprises the phase circuit 20 associated with the lever 53 and with the first pair of phase terminals 26, 28.
  • the second compartment 180 contains the differential part and the passing neutral circuit, connected to the second pair of neutral terminals 130, 132.
  • the wall 14 has only the two upper openings 78.80 for the conductors 68.70 for connection of the primary phase winding 64. Interruption of the phase circuit 20 for the insertion of the primary winding phase 64 is carried out in the same manner as in FIGS. 1 and 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Claims (4)

  1. Einpoliger Fehlerstrom-Leistungsschalter mit Neutralleiterpol (10, 100), der in einem durch eine Trennwand (14) in zwei aneinandergrenzende Bereiche unterteilten Isolierstoffgehäuse (12) installiert ist, welches
    - ein erstes Leistungsschalterabteil (16, 160), in dem ein Phasenstromkreis (20), der an ein auf zwei gegenüberliegenden schmalen Seitenflächen (31, 33) des Gehäuses (12) angeordnetes, dem Phasenleiter zugeordnetes erstes Klemmenpaar (26, 28) angeschlossen ist, ein aus einem feststehenden sowie einem beweglichen Phasenkontakt bestehendes und einer ersten Lichtbogenlöschkammer (44) zugeordnetes Kontaktpaar (38, 34) und ein erster Schaltmechanismus (52) zur manuellen Betätigung über einen Schaltknebel (53) sowie zur automatischen Betätigung durch Zusammenwirkung mit einem thermischen Bimetallauslöser (36) bzw. einem elektromagnetischen Auslöser (42) mit Erregerspule (40) angeordnet sind,
    - ein zweites Fehlerstromschutzabteil (18, 180), in dem ein Summenstromwandler (54) mit Magnetringkern (62) angeordnet ist, der eine Primärwicklung (64) des Phasenleiters, eine Primärwicklung (66) des Neutralleiters sowie eine Sekundär-Meßwicklung trägt, welche an ein elektromagnetisches Auslöserelais (56) angeschlossen ist, das über einen zweiten Auslösemechanismus (58) mit dem ersten Schaltmechanismus (52) mechanisch zusammenwirkt,
    - einen Neutralleiterkreis (22), der an ein, dem Neutralleiter zugeordnetes zweites Klemmenpaar (30, 32; 130, 132) angeschlossen ist,
    - sowie in der Trennwand (14) zwischen den beiden Abteilen (16, 18) ausgebildete Öffnungen (76, 78) umfaßt, die das Hindurchführen von zwei inneren Anschlußleitern (68, 70) ermöglichen, um die Primärwicklung (64) des Phasenleiters in den Phasenstromkreis (20) einsetzen zu können,
    dadurch gekennzeichnet, daß der Phasenstromkreis (20) an das zweite Abteil (18, 180) angrenzt, wobei einer der Anschlußleiter (70) der Primärwicklung (64) des Phasenleiters an das Kontaktstück der nächstgelegenen Phasenleiterklemme (28) und der andere Anschlußleiter (68) an das gegenüber dem feststehenden Phasenkontakt (38) angeordnete hintere Ende (84) der Spule (40) angeschlossen ist, und daß die Durchführungsöffnungen (76, 78) in dem zwischen der genannten Phasenklemme (28) und der Auslaufzone der ersten Lichtbogenlöschkammer (44) ausgebildeten Freiraum (83) angeordnet sind.
  2. Fehlerstrom-Leistungsschalter nach Anspruch 1 mit abgeschaltetem, im ersten Leistungsschalterabteil angeordneten und einen feststehenden Neutralleiterkontakt (46) sowie einen beweglichen Neutralleiterkontakt (48) umfassenden Neutralleiterkreis (22), dadurch gekennzeichnet, daß der Phasenstromkreis (20) des Leistungsschalters (10) zwischen dem Neutralleiterkreis (22) und dem zweiten Abteil (18) angeordnet ist, und daß die Primärwicklung (66) des Neutralleiters über zwei innere Anschlußleiter (72, 74), die durch zwei im genannten Freiraum in der Trennwand (14) ausgebildete zusätzliche Öffnungen (80, 82) geführt sind, in den Neutralleiterkreis (22) eingesetzt ist, wobei einer der Anschlußleiter (74) für die Primärwicklung (66) des Neutralleiters an das Kontaktstück der nächstgelegenen Neutralleiterklemme (32) und der andere Anschlußleiter (72) über einen Verbindungsleiter an den feststehenden Neutralleiterkontakt (46) angeschlossen ist.
  3. Fehlerstrom-Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, daß die im genannten Freiraum (83) des Leistungsschalters (10) ausgebildeten Durchführungsöffnungen (76, 78, 80, 82) in einer rechtwinklig zur Trennwand (14) sowie zum Boden des Gehäuses (12) verlaufenden senkrechten Flucht angeordnet sind.
  4. Fehlerstrom-Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß der durchgeschleifte Neutralleiterkreis des Leistungsschalters (100) im zweiten Abteil (180) angeordnet ist.
EP91420140A 1990-05-10 1991-04-29 Einpol- und Nulleiter-Differentialschutzschalter Expired - Lifetime EP0456585B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9006551 1990-05-10
FR9006551A FR2662017B1 (fr) 1990-05-10 1990-05-10 Disjoncteur differentiel unipolaire et neutre.

Publications (2)

Publication Number Publication Date
EP0456585A1 EP0456585A1 (de) 1991-11-13
EP0456585B1 true EP0456585B1 (de) 1995-02-15

Family

ID=9396963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420140A Expired - Lifetime EP0456585B1 (de) 1990-05-10 1991-04-29 Einpol- und Nulleiter-Differentialschutzschalter

Country Status (5)

Country Link
EP (1) EP0456585B1 (de)
AT (1) ATE118648T1 (de)
DE (1) DE69107332T2 (de)
ES (1) ES2071268T3 (de)
FR (1) FR2662017B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687838B1 (fr) * 1992-02-21 1994-04-08 Merlin Gerin Disjoncteur differentiel unipolaire et neutre et a circuit test.
FR2715767B1 (fr) * 1994-02-02 1996-04-26 Legrand Sa Disjoncteur différentiel unipolaire et neutre.
JP3210820B2 (ja) * 1994-11-15 2001-09-25 松下電工株式会社 漏電遮断器
DE10324390A1 (de) * 2003-05-30 2004-12-23 Abb Patent Gmbh Elektrische Auslöseeinrichtung für einen elektrischen Schalter
CN101989518B (zh) * 2009-08-06 2014-05-14 浙江正泰电器股份有限公司 一种相线加中线式剩余电流动作断路器
FR2969369A1 (fr) * 2010-12-20 2012-06-22 Schneider Electric Ind Sas Appareil de protection electrique comportant la fonction de protection differentielle
CN106449318B (zh) * 2015-08-04 2019-05-24 浙江正泰电器股份有限公司 断路器脱扣机构
FR3072179B1 (fr) * 2017-10-11 2020-10-09 Schneider Electric Ind Sas Module de detection d'un defaut electrique pour un ensemble de protection electrique et ensemble de protection electrique comprenant un tel module de detection
CN115424902B (zh) * 2022-09-07 2024-04-23 加西亚电子电器股份有限公司 一种漏电断路器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL275674A (de) * 1962-03-08
DE7105414U (de) * 1971-02-13 1971-05-06 Bbc Ag Mehrpoliger Fehlerstromschutzschalter
EP0103167B1 (de) * 1982-08-19 1987-11-11 BROWN, BOVERI & CIE Aktiengesellschaft Leitungsschutzschalter mit Fehlerstromauslösung
FR2578093B1 (fr) * 1985-02-27 1987-03-06 Merlin Gerin Disjoncteur differentiel unipolaire et neutre

Also Published As

Publication number Publication date
ES2071268T3 (es) 1995-06-16
EP0456585A1 (de) 1991-11-13
FR2662017B1 (fr) 1996-07-26
DE69107332D1 (de) 1995-03-23
DE69107332T2 (de) 1995-09-07
FR2662017A1 (fr) 1991-11-15
ATE118648T1 (de) 1995-03-15

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