EP0540431A1 - Betätigungsvorrichtung für vierpoligen Lastschalter - Google Patents

Betätigungsvorrichtung für vierpoligen Lastschalter Download PDF

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Publication number
EP0540431A1
EP0540431A1 EP92420366A EP92420366A EP0540431A1 EP 0540431 A1 EP0540431 A1 EP 0540431A1 EP 92420366 A EP92420366 A EP 92420366A EP 92420366 A EP92420366 A EP 92420366A EP 0540431 A1 EP0540431 A1 EP 0540431A1
Authority
EP
European Patent Office
Prior art keywords
bar
pole
spring
stop
operating mechanism
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
EP92420366A
Other languages
English (en)
French (fr)
Other versions
EP0540431B1 (de
Inventor
Robert Morel
Xavier Thomassin
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 EP0540431A1 publication Critical patent/EP0540431A1/de
Application granted granted Critical
Publication of EP0540431B1 publication Critical patent/EP0540431B1/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
    • 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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to an operating mechanism for an electric four-pole breaking device, in particular a circuit breaker comprising three poles respectively associated with the three phases and a pole associated with neutral.
  • the opening and closing operating mechanism of a circuit breaker is associated with one of the poles.
  • this mechanism being associated with the central pole, the lateral forces are distributed symmetrically on either side of the mechanism.
  • four-pole circuit breakers due to the asymmetry introduced by the position of the mechanism, there are problems of bending and / or torsion on the coupling means connecting the poles together.
  • Document FR-A-2,478,368 proposes a solution to the aforementioned drawbacks, which consists in adding an auxiliary mechanism to the pole associated with the neutral.
  • This auxiliary mechanism modulates the resistive torque during the maneuver thanks to an angular offset between the three poles associated with the phases and the pole associated with the neutral which differs the actuation of the pole from the neutral; this mechanism includes in particular a compression spring to compensate for friction forces and promote the passage of neutral.
  • the aforementioned solution does not allow perfect simultaneity of the opening and closing operations of the four poles; moreover, it does not allow a rationalization of the manufacture of the poles because of the differences existing between the poles associated with the phases and the pole associated with the neutral; finally, the mechanism is subject to significant fatigue phenomena.
  • the object of the invention is to remedy the aforementioned drawbacks and to allow the manufacture of a four-pole circuit breaker. simple, economical, robust and reliable.
  • the auxiliary pole In the stable open or closed position, the auxiliary pole is transparent to the coupling means, that is to say that the auxiliary pole does not induce any torque and / or bending on the rest of the mechanism.
  • This twist and / or bending on the coupling means and on the main mechanism is present only during opening and closing operations, which represents a tiny fraction of the life of a switching device, thus avoiding the problems of fatigue of the operating mechanism.
  • the free end of the pulling is articulated on a yoke which is in turn articulated around a second transverse axis of the device, and which cooperates with a crank integral in rotation with the bar, the stop being arranged coaxially to the second transverse axis.
  • the yoke is provided with a pin which cooperates with a light made in the crank; the light comprises a radial part and a tangential part with respect to the rotation of the crank.
  • the tie rod is formed by a plate articulated on the yoke by means of two lugs, and the stop is formed by the articulation axis of the yoke around the second transverse axis.
  • the four poles can in particular be identical, the coupling means being formed by two rods diametrically opposite with respect to the transverse axis and pass through all of the elementary bars right through.
  • Figure 1 is a schematic view of a four-pole switching device.
  • Figure 2 is a section through a pole.
  • Figures 3A and 3B illustrate a first embodiment of the invention.
  • Figures 4A and 4B illustrate a second embodiment of the invention.
  • Figures 5A, 5B, 5C illustrate a third embodiment of the invention.
  • FIG. 6 represents, with reference to the third embodiment, a perspective of the auxiliary mechanism associated with the fourth pole.
  • a four-pole circuit breaker comprises three poles P1, P2 and P3 associated with the phase conductors of the network, and a fourth pole N associated with the neutral conductor.
  • the four poles of the circuit breaker are housed in rectangular boxes made of molded insulating material, placed side by side along the transverse axis XX ′; these boxes can in particular be in the form of four identical boxes, each pole having its own box, or even in the form of two boxes, a first monobloc box containing the poles P1, P2 and P3 and a second box for the pole N .
  • the circuit breaker operating mechanism comprises a main mechanism Mp associated with the main pole Pp, and an auxiliary mechanism Ma associated with the auxiliary pole Pa, and intended to remedy the phenomena of bending and / or torsion introduced by the asymmetrical position of the main mechanism Mp .
  • a coupling mechanism Mc connects the main mechanism Mp to the auxiliary mechanism Ma.
  • the main mechanism Mp is actuated in a known manner, either by manual action by means of a control lever (not shown), or by means of a trip unit (not shown), magnetothermic or electronic.
  • FIG. 2 represents, a cut-off pole P1 particularly well suited to the invention because of its modularity.
  • the four poles P1, P2, P3 and N are strictly identical and are adapted so as to receive or not a main mechanism Mp or an auxiliary mechanism Ma, which allows a very thorough rationalization of the manufacture of circuit breakers : in particular, it is possible, from a single pole manufacturing line, to assemble these poles to make it a two-pole, three-pole or four-pole circuit breaker.
  • the breaking pole P1 is housed in a housing 8 of molded insulating material, in which two breaking chambers 6a and 6b are arranged.
  • the pole P1 comprises a rotary contact 3 with double breaking which cooperates with two fixed contacts 2a and 2b respectively connected to the connection pads 7a and 7b.
  • the rotary contact 3 is housed in a rotary elementary switching bar 1 made of insulating material which is guided in rotation about the axis ZZ ′.
  • the rotary contact 3 is coupled to the bar 1 by means of two contact pressure springs 4a and 4b.
  • the bar 1 is pierced with two diametrically opposite holes with respect to the transverse axis ZZ ′, and adapted to receive two transverse rods 5a and 5b which ensure the mechanical coupling Mc of the four poles P1, P2, P3 and N right through , and by the same token, the coupling of the main mechanism Mp with the auxiliary mechanism Ma.
  • FIGS. 3A and 3B show a rotary contact 3 with single breaking, respectively in the closed and open positions of the pole, the second cut having been replaced by a braid 9 which connects the rotary contact 3 to the connection pad 7b.
  • the rotary contact 3, housed in the rotary bar 1, is coupled to the bar 1 by a contact pressure spring 4, which when the pole is closed, exerts a reaction force F on the bar 1 as indicated in FIG. 3A.
  • a tension spring 10 is attached at one of its ends to a hook 11 integral with the bar 1 and located on a radius of the bar 1; the other end of the spring 10 is attached to an anchor 12 secured to the housing 8, so that the spring 10, in the closed position of the pole, is rectilinear and almost comes to graze a stop 13 secured to the bar 1 and located on the axis of rotation ZZ ′ of the bar 1.
  • the tension spring 10 stretched in a rectilinear fashion forms a slight angle ⁇ with the diameter of the bar passing through the hook 11, so as to exert a torque C on the bar in the direction opposite to the force F, that is, keep the contacts closed.
  • the auxiliary mechanism In the open position, the auxiliary mechanism is again transparent to the rest of the operating mechanism.
  • FIGS. 4A and 4B illustrate a second embodiment of the auxiliary mechanism associated with a double-break rotary contact.
  • the spring means of the mechanism comprise a tie rod 25 and a tension spring 20 placed end to end by means of a pivot 24.
  • the free end of the tie rod is coupled by a joint 27 to the end of a crank 26 secured to the elementary bar 1.
  • the free end of the spring 20 is attached to an anchor 22 secured to the housing.
  • the pulling assembly 25 / spring 20 In the closed position of the contacts, the pulling assembly 25 / spring 20 is rectilinear and forms a small angle ⁇ with the diameter of the bar 1 passing through the articulation 27.
  • the pivot 24 is in the vicinity of a stop 23 integral with the crank 26, and arranged coaxially to the transverse axis XX ′.
  • the pulling assembly 25 / spring 20 exerts a torque on the bar 1 which opposes the force developed by the contact pressure springs 4a, 4b on the bar 1.
  • the pivot 24 comes to bear on the stop 23, which has the effect of eliminating the torque developed by the tie rod 25 / spring 20 assembly, as soon as the contacts are separated and when the contacts are open, the tie rod 25 and the spring 20 then forms an angle ⁇ at the pivot 24.
  • the assembly pulling 25 / spring 20 becomes rectilinear again and exerts a torque on the bar 1 as soon as the pivot 24 separates from the stop 23, that is to say as soon as the contacts actually come into contact.
  • FIGS. 5A, 5B, 5C and 6 The third embodiment described with reference to FIGS. 5A, 5B, 5C and 6 is the preferred embodiment of the invention.
  • the spring means of the auxiliary mechanism are no longer directly integral with the bar 1.
  • the housing 8 of the pole N is provided with a plate 31 fixed laterally by screws 40 and 41, which covers the top of the pole P.
  • the plate 31 carries an axis of rotation 33 along the axis YY ′ on which is mounted a yoke 34.
  • the yoke 34 is guided in rotation about the axis YY ′ by means of a crank 36 secured to the bar 1; this guidance is provided by a lateral pin 37 integral with the yoke 34, which is housed in a slot 38 formed in the crank 36.
  • the spring means of the auxiliary mechanism comprise a tie rod 35 formed by a plate and a spring 30 attached end to end in the vicinity of the axis of rotation 33.
  • the free end of the plate 35 is articulated on the vertical sides of the yoke 34 by means of two lugs 39, and the free end of the spring 30 is attached to an anchor 32 of the plate 31.
  • the spring 30 / plate 35 assembly In the closed position of the pole, illustrated in FIG. 5A, the spring 30 / plate 35 assembly is rectilinear and forms an angle ⁇ with the straight line passing through the axis of rotation 33 and the anchor 32.
  • the spring 30 then exerts a torque which opposes the force developed by the contact pressure springs 4a and the value of which is such that it leaves a clearance 43 between the bar 1 and the rotary contact 3, which serves as a wear guard contacts 2a, 2b, 3a, 3b.
  • the plate 35 and the spring form an angle ⁇ and the pin 37 has joined the second end of the light 38.
  • the light 38 formed in the crank 36 has a radial part 38A and a tangential part 38B relative to the rotation of the crank.
  • the radial part 38A of the light 38 allows a significant reduction in the useful angular range during the transition between a pulling assembly 35 / straight spring 30 in the closed position, and a pulling assembly 35 / spring 30 broken in the open position; it also makes it possible to reduce the length of the spring 30.
  • the tangential part 38B of the light 38 allows the bar 1 to continue its opening stroke without having to drive the yoke 34.
  • auxiliary mechanism of this third embodiment is particularly advantageous, since it has a very small footprint and does not require any particular adjustment of the angle ⁇ due to the reduction in the useful angular range.
  • auxiliary mechanism fits on a standard pole, that is to say a pole identical to those associated with the phases, allows a very great rationalization of the manufacture of the poles.
  • the coupling means Mc are produced by elementary bars secured by means of two rods 5a, 5b; these coupling means can be modified, for example by using a single bar for the four poles, or even a single bar for the three poles associated with the phases coupled to a bar for the pole associated with the neutral, without however depart from the scope of the invention.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP92420366A 1991-10-29 1992-10-20 Betätigungsvorrichtung für vierpoligen Lastschalter Expired - Lifetime EP0540431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113457A FR2683089B1 (fr) 1991-10-29 1991-10-29 Mecanisme de manóoeuvre pour disjoncteur tetrapolaire.
FR9113457 1991-10-29

Publications (2)

Publication Number Publication Date
EP0540431A1 true EP0540431A1 (de) 1993-05-05
EP0540431B1 EP0540431B1 (de) 1998-01-14

Family

ID=9418505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420366A Expired - Lifetime EP0540431B1 (de) 1991-10-29 1992-10-20 Betätigungsvorrichtung für vierpoligen Lastschalter

Country Status (7)

Country Link
US (1) US5357066A (de)
EP (1) EP0540431B1 (de)
JP (1) JP3352733B2 (de)
KR (1) KR930008898A (de)
DE (1) DE69224035T2 (de)
ES (1) ES2112306T3 (de)
FR (1) FR2683089B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
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EP1331654A2 (de) * 2002-01-23 2003-07-30 Siemens Aktiengesellschaft Leistungsschalter mit einer Antriebsvorrichtung zur Betätigung einer Kontakteinheit
WO2007088080A1 (de) * 2006-01-31 2007-08-09 Siemens Aktiengesellschaft Kontaktsystem für ein elektrisches schaltgerät
EP2463884A1 (de) 2010-12-13 2012-06-13 Schneider Electric Industries SAS Abschaltungsvorrichtung mit mehreren einpoligen Abschaltungsblocks und nur einem Betätigungsmechanismus dieser Blocks
EP2894646A1 (de) * 2014-01-13 2015-07-15 Schneider Electric Industries SAS Elektrische Kontaktvorrichtung und unipolarer Abschaltblock mit niedriger Spannung, der eine solche elektrische Kontaktvorrichtung umfasst

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KR101539832B1 (ko) * 2009-09-18 2015-07-27 슈나이더 일렉트릭 인더스트리스 에스에이에스 회전 접촉 브리지를 포함하는 단극 컷 오프 유닛, 이러한 유닛을 포함하는 컷 오프 장치, 및 이러한 장치를 포함하는 회로 차단기
CN103077856B (zh) * 2011-10-25 2015-03-04 施耐德电器工业公司 不对称的双触点断路器
JP6078378B2 (ja) * 2013-03-01 2017-02-08 株式会社日立産機システム 回路遮断器
DE102014107265B4 (de) * 2014-05-22 2020-01-02 Eaton Intelligent Power Limited Schaltgerät
DK3206219T3 (da) * 2016-02-10 2019-08-12 Abb Spa Omskifterindretning til elektriske lavspændingsinstallationer
DE102016217106A1 (de) 2016-09-08 2018-03-08 Siemens Aktiengesellschaft Schaltschloss für einen elektrischen Schalter und elektrischer Schalter mit solch einem Schaltschloss
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CN214797137U (zh) * 2021-04-23 2021-11-19 施耐德电器工业公司 一种适用于自动转换开关的对插式触头组件

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GB2124032A (en) * 1982-07-15 1984-02-08 Fuji Electric Co Ltd A multipolar circuit breaker
EP0108022A1 (de) * 1982-10-29 1984-05-09 Legrand Schalter mit Trennung des Nulleiters

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FR2648952B1 (fr) * 1989-06-26 1991-09-13 Merlin Gerin Disjoncteur limiteur equipe d'un dispositif retardateur de retombee de contact a effet electromagnetique

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FR2478368A1 (fr) * 1980-03-12 1981-09-18 Merlin Gerin Mecanisme de manoeuvre pour disjoncteur tetrapolaire
GB2124032A (en) * 1982-07-15 1984-02-08 Fuji Electric Co Ltd A multipolar circuit breaker
EP0108022A1 (de) * 1982-10-29 1984-05-09 Legrand Schalter mit Trennung des Nulleiters

Cited By (8)

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Publication number Priority date Publication date Assignee Title
EP1331654A2 (de) * 2002-01-23 2003-07-30 Siemens Aktiengesellschaft Leistungsschalter mit einer Antriebsvorrichtung zur Betätigung einer Kontakteinheit
EP1331654A3 (de) * 2002-01-23 2005-04-20 Siemens Aktiengesellschaft Leistungsschalter mit einer Antriebsvorrichtung zur Betätigung einer Kontakteinheit
WO2007088080A1 (de) * 2006-01-31 2007-08-09 Siemens Aktiengesellschaft Kontaktsystem für ein elektrisches schaltgerät
EP2463884A1 (de) 2010-12-13 2012-06-13 Schneider Electric Industries SAS Abschaltungsvorrichtung mit mehreren einpoligen Abschaltungsblocks und nur einem Betätigungsmechanismus dieser Blocks
US8664549B2 (en) 2010-12-13 2014-03-04 Schneider Electric Industries Sas Switchgear device having several single-pole switching units and comprising a single actuating mechanism of said units
EP2894646A1 (de) * 2014-01-13 2015-07-15 Schneider Electric Industries SAS Elektrische Kontaktvorrichtung und unipolarer Abschaltblock mit niedriger Spannung, der eine solche elektrische Kontaktvorrichtung umfasst
FR3016472A1 (fr) * 2014-01-13 2015-07-17 Schneider Electric Ind Sas Dispositif de contact electrique et bloc de coupure unipolaire basse tension integrant un tel dispositif de contact electrique
US9666383B2 (en) 2014-01-13 2017-05-30 Schneider Electric Industries Sas Electrical contact device and low-voltage single-pole phase unit incorporating such an electrical contact device

Also Published As

Publication number Publication date
FR2683089B1 (fr) 1993-12-31
EP0540431B1 (de) 1998-01-14
DE69224035T2 (de) 1998-07-02
ES2112306T3 (es) 1998-04-01
US5357066A (en) 1994-10-18
JPH05217486A (ja) 1993-08-27
DE69224035D1 (de) 1998-02-19
FR2683089A1 (fr) 1993-04-30
KR930008898A (ko) 1993-05-22
JP3352733B2 (ja) 2002-12-03

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