EP0602024A2 - 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
EP0602024A2
EP0602024A2 EP94420082A EP94420082A EP0602024A2 EP 0602024 A2 EP0602024 A2 EP 0602024A2 EP 94420082 A EP94420082 A EP 94420082A EP 94420082 A EP94420082 A EP 94420082A EP 0602024 A2 EP0602024 A2 EP 0602024A2
Authority
EP
European Patent Office
Prior art keywords
lever
relay
bar
triggering
mechanical connection
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.)
Granted
Application number
EP94420082A
Other languages
English (en)
French (fr)
Other versions
EP0602024B1 (de
EP0602024A3 (en
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0602024A2 publication Critical patent/EP0602024A2/de
Publication of EP0602024A3 publication Critical patent/EP0602024A3/xx
Application granted granted Critical
Publication of EP0602024B1 publication Critical patent/EP0602024B1/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.
  • 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 link comprises a U-shaped metal stirrup cooperating with stop means associated with the latching lever and the switching bar to form the mechanical connection, that the relay transmits the triggering order to the lock by means of a triggering lever associated with an intermediate mechanical amplifier, and that the plate of the mechanism is equipped with a notch authorizing the insertion of the link to establish the mechanical connection in end of mounting of the switch after installation of the first lever sub-assembly, and of the second bar sub-assembly.
  • 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 fixed conductive pad 28 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 in 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 of 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 48.
  • 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 48.
  • 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 with limited rotation 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 the latching to break 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)
EP94420082A 1988-12-14 1994-03-17 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle Expired - Lifetime EP0602024B1 (de)

Applications Claiming Priority (3)

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
EP89420472A EP0377385B1 (de) 1988-12-14 1989-11-29 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP89420472A Division EP0377385B1 (de) 1988-12-14 1989-11-29 Betätigungsmechanismus für einen mehrpoligen Fehlerstromschutzschalter mit drehbarer Schaltwelle
EP89420472.6 Division 1989-11-29

Publications (3)

Publication Number Publication Date
EP0602024A2 true EP0602024A2 (de) 1994-06-15
EP0602024A3 EP0602024A3 (en) 1994-09-14
EP0602024B1 EP0602024B1 (de) 1997-07-23

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 Before (1)

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

Country Status (6)

Country Link
EP (2) EP0377385B1 (de)
DE (2) DE68928206T2 (de)
ES (2) ES2106481T3 (de)
FR (1) FR2640423B1 (de)
PT (1) PT92560B (de)
ZA (1) ZA899466B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2280406A1 (de) * 2009-07-29 2011-02-02 Hager Electro Sas Elektrisches Gerät mit multipolarem Schutz und Fernbedienung

Families Citing this family (2)

* 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

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.
DE1563671C3 (de) * 1966-03-16 1975-05-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2280406A1 (de) * 2009-07-29 2011-02-02 Hager Electro Sas Elektrisches Gerät mit multipolarem Schutz und Fernbedienung
FR2948814A1 (fr) * 2009-07-29 2011-02-04 Hager Electro Sas Appareil electrique de protection multipolaire a declenchement a distance.

Also Published As

Publication number Publication date
EP0377385B1 (de) 1995-01-11
DE68920565D1 (de) 1995-02-23
FR2640423B1 (fr) 1991-10-04
ZA899466B (en) 1990-08-29
EP0602024B1 (de) 1997-07-23
FR2640423A1 (fr) 1990-06-15
DE68928206D1 (de) 1997-09-04
DE68920565T2 (de) 1995-08-17
ES2106481T3 (es) 1997-11-01
PT92560B (pt) 1995-09-12
DE68928206T2 (de) 1998-01-15
ES2069604T3 (es) 1995-05-16
PT92560A (pt) 1990-06-29
EP0602024A3 (en) 1994-09-14
EP0377385A1 (de) 1990-07-11

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