EP0196241B1 - Einpol- und Nulleiter-Differentialschutzschalter - Google Patents

Einpol- und Nulleiter-Differentialschutzschalter Download PDF

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Publication number
EP0196241B1
EP0196241B1 EP86400333A EP86400333A EP0196241B1 EP 0196241 B1 EP0196241 B1 EP 0196241B1 EP 86400333 A EP86400333 A EP 86400333A EP 86400333 A EP86400333 A EP 86400333A EP 0196241 B1 EP0196241 B1 EP 0196241B1
Authority
EP
European Patent Office
Prior art keywords
neutral
phase
circuit breaker
circuit
case
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
Application number
EP86400333A
Other languages
English (en)
French (fr)
Other versions
EP0196241A1 (de
EP0196241B2 (de
Inventor
William Bartolo
Yves Belin
Yves Bonhomme
Michel Lazareth
Gérard Pion Roux
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9316764&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0196241(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to AT86400333T priority Critical patent/ATE47771T1/de
Publication of EP0196241A1 publication Critical patent/EP0196241A1/de
Application granted granted Critical
Publication of EP0196241B1 publication Critical patent/EP0196241B1/de
Publication of EP0196241B2 publication Critical patent/EP0196241B2/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

Definitions

  • the invention relates to a unipolar and neutral differential circuit breaker according to the preamble of claim 1.
  • Document EP-A 0 103 167 describes a differential circuit breaker with two separate compartments, one for housing the phase circuit and the other for the neutral circuit. In the phase compartment is housed the test contact of the differential part, while the differential transformer and the associated relay are arranged in the neutral compartment.
  • the differential circuit breaker is not modular and cannot be made from a standard circuit breaker.
  • the document FR-A 2 437 692 relates to a differential circuit breaker constituted by the assembly of a standard bipolar circuit breaker with miniature molded case, and a differential block of the same profile.
  • This assembly is carried out by the installer or the distributor whose stock can thus be limited.
  • the assembly requires an external electrical connection and the load is connected to the terminals of the differential box, different from the terminals of the circuit breaker box normally used, in the absence of a differential block. These connections complicate the task of the installer, especially of an unsophisticated user.
  • the applicant markets a single pole and neutral circuit breaker which is the subject of European patent EP-A 0 042 778 facilitating the task of the user.
  • a single housing In a single housing are incorporated phase cut and neutral contacts connected to two input and output terminals arranged on the two opposite narrow faces of the housing.
  • the user connects the two incoming conductors on one side of the device and the two outgoing conductors on the other side.
  • the simultaneous breaking of the neutral circuit and the phase circuit ensures isolation of the circuit by allowing intervention in complete safety.
  • the need has arisen to have a circuit breaker of this type which also provides differential protection against earth faults, and the present invention aims to meet this need, by implementing the characteristics of claim 1.
  • the circuit breaker part is a standard circuit breaker, for example described in the aforementioned European patent to which is added a differential block, this addition being carried out in the factory, so as to deliver a single block comprising two input terminals and two output terminals avoiding any Connexion error.
  • the circuit breaker part and the differential part can be integrated side by side in the same molded case, the number of steps, in this case the width, will be greater than that of the standard circuit breaker block. It is also possible to use a standard circuit breaker box, one of the side faces of which is modified to allow the passage of the electrical connections to the differential part housed in an independent box attached at the factory to the circuit breaker box.
  • phase connection conductors are arranged in the upper part of the housing in which a part of the phase circuit extends, in this case the coil of the electromagnetic trip device and the end of the bimetallic strip constituting the thermal trip device. These connecting conductors pass over the insulating partition between the phase contacts and the neutral contacts without interfering with the neutral circuit.
  • the neutral connection is made in the lower part and presents no difficulty, the parts to be connected being adjacent.
  • connection of the phase differential part takes place on the one hand at the winding of the electromagnetic trip device, and on the other hand at the free end of the bimetallic strip.
  • This connection limits the number of welds to be made, the winding wire can for example be lengthened to connect directly to the primary winding of the differential part, the braid welded to the end of the bimetallic strip constituting the connection of the other end of the primary winding.
  • the primary neutral winding of the differential part is connected to the neutral circuit of the circuit breaker, preferably by interrupting the connecting conductor of the fixed contact at the output terminal, which avoids any manufacturing of additional complicated parts.
  • a pair of terminals 16, 18 for supplying the device housed in the housing 10, the opposite output face carrying a pair of terminals 20, 22.
  • the opposite terminals 16, 20 belong to a phase circuit housed at inside the housing 10, while the terminals 18, 22 belong to a neutral circuit juxtaposed with the phase circuit.
  • An insulating intermediate partition 24 is interposed between the shells 12, 14 extending parallel to the large lateral faces of the housing 10.
  • the supply terminal 18 carries a fixed contact 26, capable of cooperating with a movable neutral contact 28 carried by an insulating contact arm 30
  • the fixed contact 26 is extended by an arcing horn 32 extending inside an arc extinguishing chamber opposite an arcing horn 34 disposed at the rear of the movable contact 28.
  • the arcing horn 34 is connected by a braid 36 to the movable contact 28 and is extended by a connection conductor 38, which extends transversely to the housing towards an adjacent part containing the differential part of the circuit breaker described below.
  • a second connection conductor 40 parallel to the conductor 38, is extended to the output terminal 22.
  • the phase circuit analogous to the aforementioned neutral circuit, comprises an input terminal 16 carrying a fixed contact 42 cooperating with a contact mobile 44 carried by the insulating contact arm 30.
  • the fixed contact 42 is extended by an arcing horn 46, disposed opposite an arcing horn 48 connected to the output terminal 20.
  • a braid 50 connects the contact phase mobile 44 at the input of a coil 52 of an electromagnetic trip device, the output of which constitutes a third connection conductor 54 extending towards the differential part 64.
  • a fourth connection conductor 56 in the form of a braid connects the part differential at the end of the bimetallic strip 58 connected to the output terminal 20.
  • the insulating partition 24 separates the neutral contacts 26, 28 from the phase contacts 42, 44 extending in the lower part of the housing 10.
  • the part upper case 10 c have the electromagnetic trigger 52 as well as the trigger mechanism designated by the general reference 60 which includes a manual control lever 62.
  • the electromagnetic trigger 52 in the upper part of the housing 10, straddles the intermediate partition 24 and occupies the space at - above phase and neutral contacts.
  • the aforementioned circuit breaker is described in detail in the aforementioned European patent, with the exception of the connection conductors 38, 40, 54, 56, and it suffices to recall that the neutral contacts 26, 28 and of phase 42, 44 are always in the same closed or open position by being controlled by the same mechanism 60. Only the phase circuit has triggers.
  • the differential part 64 of the housing 10, adjacent to the neutral circuit, contains the elements ensuring differential protection, in this case the triggering of the mechanism 60 during a ground fault.
  • the differential part 64 contains a toroidal differential transformer 66 carrying primary neutral 68 and phase 70 windings connected respectively to the connection conductors 38, 40 and 54, 56.
  • the differential transformer 66 carries a secondary winding 72 supplying a polarized relay 74.
  • the polarized relay 74 is connected by mechanical links 76 to the mechanism 60 to transmit on the one hand to this mechanism a trip order, and on the other hand a reset action of the relay 74 after a trip maneuver.
  • Such differential blocks are well known to specialists and for example described in the aforementioned French patent.
  • a ground fault results in an imbalance between the currents flowing through the primary windings 68, 70 which induces a secondary current in the winding 72 actuating the relay 74.
  • the differential part 64 naturally includes a test circuit well known to specialists.
  • the unipolar and neutral differential circuit breaker according to the invention can be produced by standard elements of a unipolar and neutral circuit breaker and a differential block, only certain secondary parts, in particular the arcing horn 34 and the conductors of connection 40, 56 being replaced by different parts. This replacement being carried out in the factory poses no problem and the device delivered to the customer is used like any normal circuit breaker by connecting the input and output circuits to terminals 16, 18, 20, 22.
  • the circuit breaker part and the differential part 64 can be housed in the same box 10 or possibly be arranged in separate boxes, the side walls of which are joined during assembly. These side walls naturally include orifices for the passage of electrical connections 38, 40, 54, 56 and mechanical connections 76.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)

Claims (6)

1. Einpol- und Nulleiter-Differentialschutzschalter mit einem Gußgehäuse (10) und mit:
- einem Phasenstromkreis mit einem Paar Phasenkontakten (42, 44), die mit den Phasen-Eingangsklemmen (16) und -Ausgangsklemmen (20) verbunden sind, die jeweils auf den beiden schmalen entgegengesetzten Seiten des Gehäuses angeordnet sind,
- einem Nulleiterstromkreis mit einem Paar Nulleiterkontakten (26, 28), die neben den Phasenkontakten (42, 44) angeordnet sind, mit Einfügung einer sich parallel zu den großen Seitenflächen des Gehäuses erstreckenden Trenn-Isolierwand (24), und die mit den Nulleiter-Eingangsklemmen (18) und -Ausgangsklemmen (22) verbunden sind, welche an die genannten Phasenklemmen (16, 20) angrenzen,
- einem handbetätigten und automatischen Schaltmechanismus (60) mit einem elektromagnetischen (52) und/oder thermischen Auslöser (58) zum Öffnen der genannten Kontakte (26, 28; 42, 44) bei Fehlerauftritt,
- ein Differentialtransformator (66) mit einer Phasenprimärwicklung (70) und Nulleiterprimärwicklung (68) und einer Sekundärwicklung (72),
- einem elektromagnetischen Relais (74), das von der genannten Sekundärwicklung (72) gespeist wird und mechanisch mit dem genannten Mechanismus (60) verbunden ist,
dadurch gekennzeichnet, daß der genannte Differentialtransformator (60) und das genannte elektromagnetische Relais (74) einen Differentialblock bilden, daß die genannten Phasen- und Nulleiterstromkreise und der genannte handbetätigte und automatische Schaltmechanismus (60) mit elektromagnetischem (52) und/oder thermischem Auslöser (58) einen Schutzschalterblock bilden, daß die genannten Blöcke entweder in getrennten Gehäusen, deren Seitenflächen miteinander verbunden sind, angeordnet sind, oder in demselben Gehäuse mit einer Trennzwischenwand zwischen dem Schutzschalterblock und dem Differentialblock, daß der Nulleiterstromkreis neben dem Differentialblock liegt, daß das genannte Gehäuse einen unteren Teil aufweist zur Unterbringung der Phasenkontakte (42, 44) und Nulleiterkontakte (26, 28), und daß sich die Leiter zur Verbindung des Nulleiterstromkreises (38, 40) und des Phasenstromkreises (54, 56) mit dem Differentialblock quer zu der genannten Zwischenwand oder zu den genannten nebeneinanderliegenden Seitenflächen erstrecken, wobei die Nulleiterstromkreis-Verbindungsleiter (38, 40) im genannten unteren Teil des Gehäuses sind und die Phasenstromkreis-Verbindungsleiter (54, 56) über diesem unteren Teil liegen.
2. Schutzschalter gemäß Anspruch 1, dadurch gekennzeichnet, daß das Gehäuse (10) einen oberen Teil aufweist zur Unterbringung des genannten Mechanismus (60) und daß sich die Leiter (56, 58) zur Verbindung des Phasenstromkreises mit dem Differentialblock quer zu der genannten Zwischenwand oder zu den genannten nebeneinanderliegenden Seitenflächen in dem genannten oberen Teil erstrecken.
3. Schutzschalter gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Phasen-Primärwicklung (70) einerseits mit einem der Enden der Spule (52) des elektromagnetischen Auslösers und andererseits mit dem freien Ende des thermischen Auslösers (58) verbunden ist.
4. Schutzschalter gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der genannte Mechanismus (60) über der Trennwand (24) der Kontakte (26, 28; 42, 44) angeordnet ist, deren Höhe auf den unteren Teil des Gehäuses (10) begrenzt ist.
5. Schutzschalter gemäß Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß der Schutzschalterblock ein einpoliger Standard-Nulleiterschutzschalter ist, der in einem erweiterten Gehäuse (10) montiert ist, um daneben den Differentialblock (64) unterzubringen, wobei die Schutzschalter- und Differentialblöcke durch vier elektrische Verbindungen (38, 40; 54, 56) verbunden sind und durch zwei mechanische Verbindungen (76) zum Auslösen bzw. Wiedereinschalten, wobei die genannten Verbindungen im Gehäuse (10) sind.
6. Schutzschalter gemäß Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß der Schutzschalterblock ein einpoliger Standard-Nulleiter-Schutzschalter ist mit einem Gußgehäuse (10), dessen große Seitenfläche auf der Seite der Nulleiterkontakte (26, 28) Durchgangsöffnungen für elektrische (38, 40; 54, 56) und mechanische Verbindungen (76) aufweist, und daß der Differentialblock (64) in einem Gehäuse von gleichem Profil untergebracht ist, das mit der genannten großen Seitenfläche verbunden ist.
EP86400333A 1985-02-27 1986-02-18 Einpol- und Nulleiter-Differentialschutzschalter Expired - Lifetime EP0196241B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400333T ATE47771T1 (de) 1985-02-27 1986-02-18 Einpol- und nulleiter-differentialschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8503012 1985-02-27
FR8503012A FR2578093B1 (fr) 1985-02-27 1985-02-27 Disjoncteur differentiel unipolaire et neutre

Publications (3)

Publication Number Publication Date
EP0196241A1 EP0196241A1 (de) 1986-10-01
EP0196241B1 true EP0196241B1 (de) 1989-11-02
EP0196241B2 EP0196241B2 (de) 1996-09-04

Family

ID=9316764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400333A Expired - Lifetime EP0196241B2 (de) 1985-02-27 1986-02-18 Einpol- und Nulleiter-Differentialschutzschalter

Country Status (6)

Country Link
EP (1) EP0196241B2 (de)
AT (1) ATE47771T1 (de)
DE (1) DE3666749D1 (de)
ES (1) ES8704672A1 (de)
FR (1) FR2578093B1 (de)
PT (1) PT82080B (de)

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US6211757B1 (en) 2000-03-06 2001-04-03 General Electric Company Fast acting high force trip actuator
US6225881B1 (en) 1998-04-29 2001-05-01 General Electric Company Thermal magnetic circuit breaker
US6262872B1 (en) 1999-06-03 2001-07-17 General Electric Company Electronic trip unit with user-adjustable sensitivity to current spikes
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure

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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.
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US6262872B1 (en) 1999-06-03 2001-07-17 General Electric Company Electronic trip unit with user-adjustable sensitivity to current spikes
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6211757B1 (en) 2000-03-06 2001-04-03 General Electric Company Fast acting high force trip actuator

Also Published As

Publication number Publication date
FR2578093A1 (fr) 1986-08-29
PT82080A (fr) 1986-03-01
PT82080B (pt) 1992-05-29
ES552395A0 (es) 1987-04-16
EP0196241A1 (de) 1986-10-01
DE3666749D1 (en) 1989-12-07
EP0196241B2 (de) 1996-09-04
FR2578093B1 (fr) 1987-03-06
ATE47771T1 (de) 1989-11-15
ES8704672A1 (es) 1987-04-16

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