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EP0377385B1 - Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle - Google Patents

Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle Download PDF

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Publication number
EP0377385B1
EP0377385B1 EP89420472A EP89420472A EP0377385B1 EP 0377385 B1 EP0377385 B1 EP 0377385B1 EP 89420472 A EP89420472 A EP 89420472A EP 89420472 A EP89420472 A EP 89420472A EP 0377385 B1 EP0377385 B1 EP 0377385B1
Authority
EP
European Patent Office
Prior art keywords
lever
bar
relay
spindle
differential switch
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
EP89420472A
Other languages
English (en)
French (fr)
Other versions
EP0377385A1 (de
Inventor
Jacques Servant
Jacques Vallot
Georges Cheyssac
Didier Dumont
Michel Bonniau
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 EP0377385A1 publication Critical patent/EP0377385A1/de
Priority to EP94420082A priority Critical patent/EP0602024B1/de
Application granted granted Critical
Publication of EP0377385B1 publication Critical patent/EP0377385B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • 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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Definitions

  • Bipolar or tetrapolar differential switches with high ratings have a high contact pressure.
  • the automatic opening of these switches by tripping of the relay requires a fairly large tripping energy, which increases the size of the relay and the summing transformer, in particular in the case of a differential trip device with its own current.
  • Document DE-U-6,610,419 relates to a differential switch not having a rotary contact-holder bar.
  • the document FR-A-2,337,933 describes a trip device capable of being attached to a circuit breaker block to constitute a differential modular circuit breaker. An amplification transmission with gear pinions is inserted in the differential release between the relay and the output member.
  • the object of the invention is to reduce the tripping energy of the relay of the differential switch, and to facilitate the mounting of the control mechanism.
  • the differential switch according to the invention is characterized in that the end of the link located opposite the articulation axis of the toggle joint cooperates during the establishment of the mechanical connection with a first stop d support of the latching lever and a second abutment supporting the switching bar, that the relay transmits the triggering order to the latch by means of a triggering lever associated with an intermediate mechanical amplifier, and that l 'at least one of said stops is released during manual opening or differential triggering to allow rotation of the bar towards the open position under the action of the first return spring.
  • the mechanical amplifier can be formed by a half-moon articulated on an axis, and entered by the release lever by causing the displacement of the bolt towards an unlocked position, authorizing the erasure of the first abutment to release the transmission link.
  • the latching lever can be pivotally mounted on an axis, and includes a holding spout cooperating with a latch retaining nose, the first support stop being arranged between the axis and the holding spout.
  • the trigger lever can be pivotally mounted on an axis between a relay excitation working position and a non-triggering rest position, said lever comprising a first control branch capable of being actuated by the relay striker during a trigger, and a second control branch cooperating directly with a leg of the half-moon.
  • the control mechanism can be carried by a support plate, which has an orifice serving as a bearing for the bar, and a notch for introducing the transmission rod for establish at the end of assembly the connection between the lever and the bar. This results in ease of mounting the control mechanism.
  • a four-pole differential switch 10 is housed in an insulating box 12 of parallelepiped shape, composed of a base 14 and a cover or cover 16 assembled to one another by snap-fastening.
  • the base 14 contains the poles and has a fixing base 18 for mounting the switch 10 on a fixing rail (not shown).
  • Each pole is connected to a pair of connection terminals 20,22 arranged on two opposite parallel faces (21,23) of the base (14) and comprises a fixed contact (24) cooperating inside an interruption chamber current with a movable contact piece 26.
  • the fixed contact 24 is carried by a track 28 fixed conductor connected directly to one of the terminals 20.
  • the movable contact piece 26 is fixed to a pivoting contact arm 30, positioned in a housing 31 of the switching bar 32, which is arranged as a rotary contact-carrying shaft.
  • a contact pressure spring 33 is interposed in the housing 31 between the end of the contact arm 30 and the wall of the bar 32.
  • the switching bar 32 is common to all the poles and extends above the interrupting chambers perpendicular to the four contact arms 30.
  • the axis 29 of rotation of the bar 32 extends in a parallel horizontal direction at the faces 21.23.
  • One end of the rotary bar 32 is coupled to a control mechanism 34, and the other opposite end is provided with a cylindrical end piece 35 housed in a bearing 36 secured to the base 14.
  • Each contact arm 30 is connected by a braid 37 (FIG. 8) to a fixed conductor 39 connected to a fixed stud 38 of intermediate connection, projecting from the interruption chamber.
  • the different pole interrupting chambers are distributed at regular intervals along the horizontal bar 32, being isolated from each other by subdivision walls 40, 42, coming from molding with the base 14.
  • the neutral pole is located on the side of the mechanism 34, and closes before the three phase poles.
  • the base 14 includes another compartment 44 between the wall 42 and the terminals 22, for housing a summing transformer 46 with a toric core 48.
  • the four primary windings 50 of the transformer 46 are shaped from the connecting conductors connecting the different pads 38 for connection to the corresponding terminals 22.
  • the transformer 46 further comprises a secondary winding 52 electrically connected to the excitation coil a trip relay 54 hooked to the control mechanism 34.
  • the mechanical members constituting the control mechanism 34 are carried by a fixed plate 56, which has an orifice 58 serving as a bearing for the bar 32.
  • Two fixing screws 60, 62 fasten the control mechanism 34 to the base 14.
  • the magnetic circuit of the trigger relay 54 is polarized by a permanent magnet, and requires a low trigger energy from the summing transformer 46.
  • the control mechanism 34 has a manual closing and opening actuation by a handle 64, and an automatic triggering by means of the relay 54 upon detection of an insulation fault by the transformer 46.
  • the handle 64 crosses a light 66 of the cover 16, and is mounted with limited pivoting on an axis 68 between two stable positions of opening and closing of the contacts of the switch 10.
  • a connecting rod 70 of transmission comprising a metal stirrup in the shape of U and of circular section, is coupled to the internal base of the handle 64 to form the hinge pin 72 of a toggle.
  • the articulation axis 72 is eccentric relative to the pivot axis 68 of the handle 64, and results from the introduction of one of the ends of the rod 70 into an orifice in the base of the handle 64 .
  • the opposite end 74 of the link 70 cooperates on the one hand with a first support stop 76 of a latching lever 78, and on the other hand with a second support stop 80 on the switching bar 32.
  • the latching lever 78 is pivotally mounted on an axis 82 between an armed position and a disarmed position, and comprises at the opposite end of the axis 82, a holding spout 84 capable of cooperating in the armed position with a nose retainer 86 of a lock 88.
  • the lock 88 is shaped as a double lever mounted for rotation limited on an axis 90 between a locked position and an unlocked position.
  • One of the levers is constituted by the retaining nose 86, and the other latching lever 92 cooperates in the locked position with a step of a half-moon 94 articulated on an axis 96.
  • the first bearing stop 76 is arranged between the axis 82 and the holding spout 84.
  • a trigger lever 98 is pivotally mounted on an axis 100 between an excitation working position of the relay 54, and a non-triggering rest position, in which the mechanism 34 is respectively triggered or maintained in the armed state.
  • a first control branch 102 of the trip lever 98 is capable of being actuated by the striker of the trip relay 54 (see arrow R in FIG. 3) when a leakage current to earth is detected.
  • the trigger lever 98 comprises a second control branch 104 cooperating directly with a tab 105 of the half-moon 94, so as to unlock the latching lever 92 of the latch 88 when the relay 54 trips.
  • a first return spring 106 biases the switching rod 32 towards the open position, when one of the stops 76.80 releases the lower end 74 of the rod 70.
  • a second return spring 108 biases the tripping lever anticlockwise towards the rest position, by providing the automatic reset energy of the relay 54.
  • a third and a fourth return spring 110, 112 urge the half-moon 94 and the latch 88 in pivoting in a clockwise direction, towards their respective original positions.
  • a fifth return spring 114 biases the latching lever 78 anticlockwise, after triggering causing a break in the attachment between the spout 84 and the nose 86.
  • control mechanism 34 with differential triggering is provided with three stages of reduction of the mechanical forces, arranged between the triggering relay 54, and the switching bar 32.
  • the presence of such a mechanical amplifier with three successive stages allows open a high contact pressure differential switch from a low energy trip relay.
  • the operation of the four-pole differential switch 10 is as follows:
  • a voluntary action of holding the handle 64 in the closed position immobilizes the link 70 as shown in Figures 3 and 4, but nevertheless allows the erasure of the first and second support stops 76.80, due to the rotation of the lever hooking 78 after triggering of relay 54.
  • the tripping force of the relay 54 passes through three reduction stages, defined by the tripping lever 98, the half-moon 94, the latch 88 and the latching lever 78, before releasing the switching bar 32.
  • the coupling of the transmission link 70 takes place at the end of mounting of the switch 10 after the first lever sub-assembly 64 and return spring (not shown) has been put in place, and the second sub-assembly formed by the bar 32 , the mechanism 34, and the plate 56.
  • the insertion of the rod 70 into the orifice of the lever, and on the two abutments 76.80 is carried out through a notch 120 of the plate 56.
  • the mechanism 34 is put in place after that of the conductive copper part located in the lower part of the base, so as to reduce the lengths of the connection conductors, and to make the welded connections accessible.
  • the mechanism 34 can also be used in any other multipole differential switch, in particular bipolar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (8)

  1. Mehrpoliger Fehlerstromschutzschalter (10) mit Isolierstoffgehäuse (12), das einen Mechanismus (34) zur Betätigung einer Schaltwelle (32), die als drehbar gelagerte und zwischen einer Ausschaltstellung und einer Einschaltstellung verschwenkbare Kontaktträgerwelle ausgeführt ist, sowie einen Summenstromwandler (46) einschließt, der einem Auslöserelais (54) zugeordnet ist, welches eine automatische Rückstellung bewirkt, wenn die Schaltwelle (32) die Ausschaltstellung erreicht hat, wobei der genannte Mechanismus aufweist :
    - einen schwenkbaren Schaltknebel (64), der mit einem Verbindungshebel (70) gekuppelt ist, um ein über eine mechanische Verbindung mit der Schaltwelle (32) verbundenes Kniegelenk zu bilden,
    - eine Sperrklinke (88), die mit einem Rasthebel (78) zusammenwirkt, um bei einer Auslösung durch das Relais (54) die mechanische Verbindung zu unterbrechen,
    - und eine erste Rückzugfeder (106), die die Schaltwelle (32) in Richtung der Ausschaltstellung beaufschlagt,
    dadurch gekennzeichnet, daß das der Drehachse (72) des Kniegelenks gegenüberliegende Ende (74) des Verbindungshebels (70) bei der Herstellung der mechanischen Verbindung mit einem ersten Anschlag (76) des Rasthebels (78) und einem zweiten Anschlag (80) der Schaltwelle (32) zusammenwirkt, daß das Relais (54) den Auslösebefehl über einen mit einem mechanischen Kraftverstärker zusammenwirkenden Auslösehebel (98) an die Sperrklinke (88) überträgt und daß mindestens einer der genannten Anschläge bei einer manuellen Ausschaltung bzw. einer Fehlerstromauslösung freigegeben wird, um unter Einwirkung der ersten Rückzugfeder (106) die Drehung der Schaltwelle (32) in die Ausschaltstellung zu ermöglichen.
  2. Fehlerstromschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß der mechanische Kraftverstärker als gelenkig auf einer Achse (96) gelagerter Nocken (94) ausgeführt ist, der vom Auslösehebel (98) mitgeführt wird und dabei die Überführung der Sperrklinke (88) in eine Entriegelungsstellung bewirkt, so daß der erste Anschlag (76) zur Freigabe des Verbindungshebels (70) gelöst werden kann.
  3. Fehlerstromschutzschalter nach Anspruch 2, dadurch gekennzeichnet, daß der Rasthebel (78) schwenkbar auf einer Achse (82) gelagert ist und einen Rastvorsprung (84) aufweist, der mit einer Rückhaltenase (86) der Sperrklinke (88) zusammenwirkt, wobei der erste Anschlag (76) zwischen der Achse (82) und dem Rastvorsprung (84) angeordnet ist.
  4. Fehlerstromschutzschalter nach Anspruch 3, dadurch gekennzeichnet, daß die Sperrklinke (88) als ein auf einer Achse (90) begrenzt drehbar gelagerter Doppelhebel ausgeführt ist und einen ersten, mit der Rückhaltenase (86) versehenen Hebel sowie einen zweiten Klinkenhebel (92) umfaßt, der in der Verriegelungsstellung mit einem Absatz des Nocken (94) zusammenwirkt.
  5. Fehlerstromschutzschalter nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Auslösehebel (98) drehbar auf einer Achse (100) montiert ist und zwischen einer Arbeitsstellung entsprechend der Erregung des Relais (54) und einer Ruhestellung entsprechend einer Auslösebereitschaft verschwenkt werden kann, wobei der genannte Hebel einen ersten Schaltarm (102), der bei einer Auslösung vom Auslösebolzen des Relais (54) beaufschlagt wird, sowie einen zweiten Schaltarm (104) aufweist, der direkt mit einer Zunge (105) des Nocken (94) zusammenwirkt.
  6. Fehlerstromschutzschalter nach Anspruch 5, dadurch gekennzeichnet, daß der Auslösehebel (98) einer zweiten Rückzugfeder (108) zugeordnet ist, die so ausgeführt ist, daß sie bei der Überführung des genannten Auslösehebels in die Arbeitsstellung wirkungslos bleibt und beim Ausschalten des Fehlerstromschutzschalters (10) mit einer Steuerkurve der Schaltwelle (32) zusammenwirkt, so daß sie in der Ruhestellung die automatische Rückstellung des Relais (54) über den ersten Schaltarm (102) bewirkt.
  7. Fehlerstromschutzschalter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Schaltmechanismus auf einem Tragkörper (56) montiert ist, der eine als Lagerkörper für die Schaltwelle (32) dienende Ausnehmung (58) sowie eine Aussparung (120) zum Einsetzen des Verbindungshebels (70) aufweist, um beim Zusammenbau die abschließende Verbindung zwischen dem Schaltknebel (64) und der Schaltwelle (32) herstellen zu können.
  8. Fehlerstromschutzschalter nach Anspruch 7, dadurch gekennzeichnet, daß die Rotationsachse (29) der Schaltwelle (32) parallel zu den Achsen (68, 96, 90, 82, 100) des Schaltknebels (64), des Nocken (94), der Sperrklinke (88) und des Rast- bzw. Auslösehebels (78, 98) angeodnet ist.
EP89420472A 1988-12-14 1989-11-29 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle Expired - Lifetime EP0377385B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94420082A EP0602024B1 (de) 1988-12-14 1994-03-17 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816593A FR2640423B1 (fr) 1988-12-14 1988-12-14 Mecanisme de commande d'un interrupteur differentiel multipolaire a barreau rotatif de commutation
FR8816593 1988-12-14

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP94420082A Division EP0602024B1 (de) 1988-12-14 1994-03-17 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle
EP94420082.3 Division-Into 1994-03-17

Publications (2)

Publication Number Publication Date
EP0377385A1 EP0377385A1 (de) 1990-07-11
EP0377385B1 true EP0377385B1 (de) 1995-01-11

Family

ID=9373014

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89420472A Expired - Lifetime EP0377385B1 (de) 1988-12-14 1989-11-29 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle
EP94420082A Expired - Lifetime EP0602024B1 (de) 1988-12-14 1994-03-17 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP94420082A Expired - Lifetime EP0602024B1 (de) 1988-12-14 1994-03-17 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle

Country Status (6)

Country Link
EP (2) EP0377385B1 (de)
DE (2) DE68920565T2 (de)
ES (2) ES2106481T3 (de)
FR (1) FR2640423B1 (de)
PT (1) PT92560B (de)
ZA (1) ZA899466B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428219C2 (de) * 1994-08-10 2003-11-13 Felten & Guilleaume Ag Abdeckung für Summenstromwandler
DE102009007586A1 (de) 2009-02-05 2010-08-19 Saia-Burgess Dresden Gmbh Auslösevorrichtung, insbesondere für Leistungsschalter
FR2948814B1 (fr) * 2009-07-29 2011-07-22 Hager Electro Sas Appareil electrique de protection multipolaire a declenchement a distance.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6610419U (de) * 1963-09-19 1974-01-03 Schutzapp Ges Paris & Co Mbh K Fehlerstrom-schutzschalter.
DE6610683U (de) * 1966-03-16 1975-07-03 Siemens Ag Fehlerstromschutzschalter.
AT339991B (de) * 1974-02-08 1977-11-25 Schrack Elektrizitaets Ag E Fehlerstrom- bzw. fehlerspannungsschutzschalter od.dgl.
FR2337933A1 (fr) * 1976-01-09 1977-08-05 Legrand Sa Relais differentiel de declenchement a haute sensibilite pour appareil de coupure tel que interrupteur ou disjoncteur par exemple
AT353884B (de) * 1978-03-02 1979-12-10 Felten & Guilleaume Ag Oester Fehlerstromschutzschalter fuer steckmontage
US4679019A (en) * 1986-05-14 1987-07-07 General Electric Company Trip actuator for molded case circuit breakers
FR2609209B1 (fr) * 1986-12-29 1994-05-20 Merlin Et Gerin Interrupteur differentiel bipolaire a indicateur de defaut

Also Published As

Publication number Publication date
EP0602024A3 (en) 1994-09-14
DE68920565D1 (de) 1995-02-23
EP0377385A1 (de) 1990-07-11
EP0602024A2 (de) 1994-06-15
PT92560B (pt) 1995-09-12
ES2106481T3 (es) 1997-11-01
ZA899466B (en) 1990-08-29
PT92560A (pt) 1990-06-29
DE68920565T2 (de) 1995-08-17
DE68928206D1 (de) 1997-09-04
FR2640423B1 (fr) 1991-10-04
EP0602024B1 (de) 1997-07-23
FR2640423A1 (fr) 1990-06-15
DE68928206T2 (de) 1998-01-15
ES2069604T3 (es) 1995-05-16

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