EP0540431B1 - Mécanisme de manoeuvre pour disjoncteur tétrapolaire - Google Patents

Mécanisme de manoeuvre pour disjoncteur tétrapolaire Download PDF

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Publication number
EP0540431B1
EP0540431B1 EP92420366A EP92420366A EP0540431B1 EP 0540431 B1 EP0540431 B1 EP 0540431B1 EP 92420366 A EP92420366 A EP 92420366A EP 92420366 A EP92420366 A EP 92420366A EP 0540431 B1 EP0540431 B1 EP 0540431B1
Authority
EP
European Patent Office
Prior art keywords
pole
bar
auxiliary
auxiliary pole
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.)
Expired - Lifetime
Application number
EP92420366A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0540431A1 (fr
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
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0540431A1 publication Critical patent/EP0540431A1/fr
Application granted granted Critical
Publication of EP0540431B1 publication Critical patent/EP0540431B1/fr
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 apparatus. electric four-pole disconnection, in particular a circuit breaker comprising three poles respectively associated with the three phases and a pole associated with the neutral, according to the preamble of claims 1, 4 and 8.
  • the opening operation mechanism and a circuit breaker is associated with one of the poles.
  • this mechanism being associated with the pole central, the lateral forces are distributed so symmetrical on both sides of the mechanism.
  • the four-pole circuit breakers due to the asymmetry introduced by the position of the mechanism, there are problems of bending and / or twisting on the coupling means connecting the poles between them.
  • Document FR-A-2,478,368, which forms the basis of the preamble of claims 1, 4 and 8, proposes a solution to the aforementioned drawbacks, which consists in adding a mechanism auxiliary to the pole associated with neutral.
  • This auxiliary mechanism modulates the resistant torque during the maneuver thanks to a angular offset between the three poles associated with the phases and the pole associated with neutral which differs the actuation of the pole from neutral; this mechanism notably includes a spring of compression to compensate for friction forces and favor the passage from neutral.
  • the above solution does not allow the perfect simultaneity of opening and closing maneuvers closing of the four poles; moreover, it does not allow a rationalization of pole manufacturing due to differences between the poles associated with the phases and the pole associated with neutral; finally, the mechanism is subject to significant fatigue phenomena.
  • the object of the invention is to remedy the aforementioned drawbacks and allow the manufacture of a four-pole circuit breaker simple, economical, robust and reliable.
  • the auxiliary pole In stable open or closed position, the auxiliary pole is transparent to the means of coupling, i.e. 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 fraction tiny part 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 axis transverse.
  • the yoke is provided with a pin which cooperates with a light practiced in the crank; the light includes a radial part and a tangential part with respect to the crank rotation.
  • the tie rod is formed by a plate articulated on the yoke by through two lugs, and the stopper is formed by the axis articulation of the yoke around the second transverse axis.
  • the four poles can in particular be identical, the means of coupling being formed by two rods diametrically opposite to the transverse axis and cross all the elementary bars right through.
  • Figure 1 is a schematic view of a switching device four-pole.
  • Figure 2 is a section through a pole.
  • FIGS. 3A and 3B illustrate a first embodiment of the invention.
  • FIGS. 4A and 4B illustrate a second embodiment of the invention.
  • FIGS. 5A, 5B, 5C illustrate a third embodiment of the invention.
  • FIG. 6 represents, with reference to the third mode of realization, a perspective of the auxiliary mechanism associated with fourth pole.
  • a four-pole circuit breaker has three poles P1, P2 and P3 associated with the network phase conductors, and a fourth pole N associated with the neutral conductor.
  • the fourth breaker poles are housed in housings rectangular shaped molded insulating material, placed side by side rib along the transverse axis XX '; these boxes can in particular be in the form of four housings identical, each pole having its own housing, or even under the shape of two cases, a first monobloc case containing the poles P1, P2 and P3 and a second box for the pole N.
  • main pole Pp P2 in FIG. 1
  • the pole furthest from the main pole Pp being designated “the pole auxiliary Pa "(Pa being N in FIG. 1).
  • the mechanism of circuit breaker operation has 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 bending and / or torsion phenomena introduced by the asymmetrical position of the main mechanism Mp.
  • a Mc coupling mechanism links the main mechanism Mp to 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 via a trigger (not shown), magnetothermal or electronic.
  • FIG. 2 represents, a cutoff pole P1 particularly well suited to the invention due to 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 manufacturing of circuit breakers: it is possible in particular from a single line of pole manufacturing, assembling these poles to make one two-pole, three-pole or four-pole circuit breaker.
  • the breaking pole P1 is housed in a housing 8 made of material molded insulation, in which are fitted two cut 6a and 6b. Pole P1 has a rotary contact 3 to double break which cooperates with two fixed contacts 2a and 2b respectively connected to connection pads 7a and 7b.
  • the rotary contact 3 is housed in an elementary rotary bar of switching 1 made of insulating material which is guided in rotation around the axis ZZ '. Rotary contact 3 is coupled to bar 1 via two contact pressure springs 4a and 4b.
  • the bar 1 is pierced with two diametrically opposed holes by relative to the transverse axis ZZ ', and adapted to receive two transverse rods 5a and 5b which ensure the coupling Mc mechanics of the four poles P1, P2, P3 and N right through, and by the same, the coupling of the main mechanism Mp with the auxiliary mechanism Ma.
  • FIGS. 3A and 3B show a rotary contact 3 with single cut-off, in the closed and open from 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 shown in Figure 3A.
  • a tension spring 10 is attached at one of its ends to a hook 11 secured to the bar 1 and located on a radius of the bar 1; the other end of the spring 10 is attached to a anchoring 12 secured to the housing 8, so that the spring 10, in the closed position of the pole, either straight and come practically brush against a stop 13 integral with the bar 1 and located on the axis of rotation ZZ 'of the bar 1.
  • the tension spring 10 tensioned so straight 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, i.e. keep the contacts closed.
  • the auxiliary mechanism In the open position, the auxiliary mechanism is again transparent on the rest of the operating mechanism.
  • FIGS. 4A and 4B illustrate a second embodiment of the auxiliary mechanism associated with a double rotary contact break.
  • the spring means of the mechanism include a tie rod 25 and a tension spring 20 placed end to end by via a pivot 24.
  • the free end of the tie rod is coupled by a hinge 27 at 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 assembly pulling 25 / spring 20 is straight and forms a small angle ⁇ with the diameter of the bar 1 passing through the joint 27.
  • the pivot 24 is in the vicinity a stop 23 integral with the crank 26, and arranged coaxially to the transverse axis XX '.
  • the whole pulling 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 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 fixed plate 31 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 around the axis YY 'via a crank 36 integral with the bar 1; this guidance is provided by a lateral pin 37 secured to the yoke 34, which is housed in a light 38 in the crank 36.
  • the spring means of the auxiliary mechanism include a tie rod 35 formed by a plate and a spring 30 attached end at the end near the axis of rotation 33.
  • the free end of the plate 35 is articulated on the sides vertical 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 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 a angle ⁇ with the straight line passing through the axis of rotation 33 and the anchor 32.
  • the spring 30 then exerts a torque which is opposed to the force developed by the contact pressure springs 4a and whose value is such that it leaves a clearance 43 between the bar 1 and the rotary contact 3, which serves to guard against wear contacts 2a, 2b, 3a, 3b.
  • the light 38 formed in the crank 36 has a part radial 38A and a tangential part 38B with respect to the crank rotation.
  • the radial part 38A of the light 38 allows a significant reduction in the angular range useful during the transition between a pulling 35 / spring assembly 30 straight in closed position, and a pulling assembly 35 / spring 30 broken in open position; it also allows reduce the length of the spring 30.
  • the tangential part 38B of light 38 allows bar 1 to continue its course opening without having to drive the yoke 34.
  • the arrangement of the auxiliary mechanism of this third mode of realization is particularly advantageous because it presents a very small footprint and does not require adjustment particular of the angle ⁇ due to the multiplication of the useful angular range.
  • the means of Mc coupling are made by elementary bars secured by means of two rods 5a, 5b; we can modify these coupling means, for example by call to 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 depart from the scope of the invention as claimed.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP92420366A 1991-10-29 1992-10-20 Mécanisme de manoeuvre pour disjoncteur tétrapolaire Expired - Lifetime EP0540431B1 (fr)

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 EP0540431A1 (fr) 1993-05-05
EP0540431B1 true EP0540431B1 (fr) 1998-01-14

Family

ID=9418505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420366A Expired - Lifetime EP0540431B1 (fr) 1991-10-29 1992-10-20 Mécanisme de manoeuvre pour disjoncteur tétrapolaire

Country Status (7)

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

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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
FR3016472B1 (fr) 2014-01-13 2016-02-05 Schneider Electric Ind Sas Dispositif de contact electrique et bloc de coupure unipolaire basse tension integrant un tel dispositif de contact electrique
DE102014107265B4 (de) * 2014-05-22 2020-01-02 Eaton Intelligent Power Limited Schaltgerät
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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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Publication number Priority date Publication date Assignee Title
FR2478368A1 (fr) * 1980-03-12 1981-09-18 Merlin Gerin Mecanisme de manoeuvre pour disjoncteur tetrapolaire
DE8024641U1 (de) * 1980-09-15 1980-12-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Leitungsschutzschalter
JPS5914235A (ja) * 1982-07-15 1984-01-25 富士電機株式会社 多極型回路しや断器
FR2535521B1 (fr) * 1982-10-29 1985-12-27 Legrand Sa Disjoncteur a sectionnement de neutre
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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Publication number Publication date
FR2683089B1 (fr) 1993-12-31
DE69224035T2 (de) 1998-07-02
EP0540431A1 (fr) 1993-05-05
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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