EP0749139B1 - Disjoncteur à moyenne tension et à isolement gazeux - Google Patents

Disjoncteur à moyenne tension et à isolement gazeux Download PDF

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Publication number
EP0749139B1
EP0749139B1 EP19960410062 EP96410062A EP0749139B1 EP 0749139 B1 EP0749139 B1 EP 0749139B1 EP 19960410062 EP19960410062 EP 19960410062 EP 96410062 A EP96410062 A EP 96410062A EP 0749139 B1 EP0749139 B1 EP 0749139B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
main
circuit
breaker according
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
EP19960410062
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0749139A1 (fr
Inventor
Denis Raphard
Raymond Soboul
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0749139A1 publication Critical patent/EP0749139A1/fr
Application granted granted Critical
Publication of EP0749139B1 publication Critical patent/EP0749139B1/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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container

Definitions

  • circuit breaker Such a circuit breaker is described in document FR-A 2 677 168, the breaking chamber being formed by a self-expanding cartridge communicating with the interior of the envelope, or a vacuum sealed ampoule.
  • a full range of circuit breakers uses a large number of devices depending on the operating voltage, size, and breaking capacity. Each device has a main circuit of dimensions specific, and a suitable switching chamber to be assembled mechanically and electrically. The manufacture and production management of such a range of circuit breakers is complicated and expensive.
  • the object of the invention is to standardize and improve the manufacture of circuit breakers medium voltage.
  • each breaking chamber has an insulating support arm fitted with a hinge pin housed in a notch a first support bracket for the movable main contact, and at least one fixing stud arranged opposite the axis and cooperating with a screw to secure said chamber to the envelope.
  • the vertical offset between the notch in the support bracket of the movable main contact, and the fixing stud on the envelope remains identical, regardless of the type of chamber cutoff, and of the disconnector.
  • the choice of the breaking chamber and the organ disconnector can be carried out at the last moment during assembly in the factory, which facilitates the manufacturing management.
  • the tightening action of the screw at the level of the stud fixing ensures mechanical assembly of the breaking chamber, jointly with its electrical connection to one of the current supply terminals.
  • the main movable contact of the disconnector, associated with the main circuit comprises a pair of contact clamps carried by the ends of the parallel branches of the first U-shaped stirrup, each clamp cooperating with a contact pad forming part of a first cradle in the form of U reversed constituting the main fixed contact.
  • the movable main contact of the circuit main is modular, and includes at least one additional pair of contact clamps, arranged on a second stirrup and / or a third support stirrup framing said first stirrup, and having increasing widths.
  • the fixed main contact has a second cradle and / or a third cradle arranged opposite the contact clamps associated with the second and / or third stirrups.
  • a pole of a three-pole medium-voltage circuit breaker 10 is housed in a sealed insulating jacket 12 filled with a gas of high dielectric strength, in particular of sulfur hexafluoride SF6.
  • the pole includes a pair of bushings 14, 16 arranged in current supply ranges for supplying the circuit breaker.
  • the bushings 14, 16 are connected directly to a disconnector 18 of the circuit main 19, comprising inside the casing 17 a fixed main contact 20 secured to the internal end of the first bushing 14 by screws 21, and a contact main mobile 22 pivotally mounted on an axis 24 of a first support bracket 26, which is secured to the second crossing 16 by fixing screws 28.
  • the envelope 12 comprises a flange 29 closed by a cover 30 with the interposition of a gasket 32.
  • Inside the casing 12 is an auxiliary circuit to breaking chamber 34 containing a pair of arcing contacts 36, 38, one of which 38 is movable is slidably mounted between a closed position where it is located engagement with the fixed arcing contact 36, and an open position for separating the contacts arc 36, 38.
  • the arcing contacts 36, 38 of the breaking chamber 34 are electrically connected by a connecting conductor 40 and a braid 42, respectively at the bushings 14 and 16, of so as to constitute a parallel assembly. In the closed position, the arcing contacts 36, 38 ensure the shunting of the main contacts 20, 22.
  • the interrupting chamber 34 is formed by a cartridge 43 an arc extinguishing device by autoexpansion and / or by rotation of the arc, said arc cartridge communicating with the internal volume of the casing 12 through the arcing contact mobile 38 tubular.
  • the actuation of the movable main contact 22, and of the movable arcing contact 38 takes place at by means of a rotary shaft 44, sealingly crossing the wall of the envelope 12 while being externally coupled to a control mechanism (not shown). Inside of the casing 12, the shaft 44 carries a crank 46 at each pole.
  • the crank 46 is connected to the main movable contact 22 by a first link 48, and in contact with a movable arc 38 by a second link 50.
  • the articulation of the links 48, 50 is carried out at a point 51 of the crank 46, the assembly being arranged to close the arcing contacts 36, 38 before the main contacts 20, 22, and open the arcing contacts 36, 38 after the main contacts 20, 22.
  • the shaft 44 is common to all the poles, and extends transversely by relative to the intermediate walls 52, 54 delimiting the three compartments 56, 58, 60 adjacent to the poles.
  • the right pole shows the integration of the disconnector 18 of the main circuit in compartment 60 after removal of the breaking chamber 34 and of the cover 30.
  • the central compartment 58 illustrates the location of the cut 34 above the tree 44.
  • the compartment 56 on the left is shown empty after removal of the disconnector and of the corresponding breaking chamber. It's clear that the electrical equipment of each compartment 56, 58, 60 is identical, and corresponds at the pole shown in Figure 1.
  • the switching chamber 34 has a lower support arm 62 extending perpendicular to the longitudinal axis of the cartridge 43, and the end of which is equipped with a hinge pin 64.
  • the cartridge 43 is also provided with a pair of fixing studs 66 located opposite the arm 62 in the longitudinal direction.
  • Figures 5 and 6 show a breaking chamber 34A adapted for a power of cutoff greater than that of chamber 34 in FIGS. 3 and 4.
  • the width between the two side faces 68, 70 opposite of the cartridge 43A is larger than that of the previous cartridge 43.
  • the distance L1 measured in the longitudinal direction between the axis 64 and the studs 66 is kept, as well as the transverse distance L2 between the axis articulation 64 and the longitudinal axis of the cartridge 43A.
  • the breaking chamber 34B corresponds to a breaking capacity maximum, and the size of the cartridge 43B is greater than that of the cartridge 43A of FIGS. 5 and 6.
  • the distances L1 and L2 are the same as those of the cartridges 43 and 43A.
  • FIG. 9 shows the quadrangular profiles of increasing sections of the different interrupting chambers 34, 34A, 34B.
  • the spatial position of the fixing pads 66 remains unchanged, regardless of the type of interrupting chamber.
  • Each fixing stud 66 is pierced with an orifice 72 disposed opposite a threaded insert 74 housed in the body of the insulating casing 12.
  • a connecting screw 76 passes through the orifice 72 of each stud 66, and is screwed into insert 74.
  • the hinge pin 64 of the support arm 62 is engaged in a notch 78 in U formed in a horizontal extension 80 of the bracket 26 for supporting the contact main mobile 22.
  • the intermediate part of the connecting conductor 40 is interposed between each pad 66 and a shoulder of the casing 12, and the end range of the conductor 40 is connected to the main circuit by the screws 21 for fixing the fixed main contact 20 to the crossing 14.
  • the braid 42 for connection is connected to an intermediate conductor 82 having a end plate pressed onto the base of the bracket 26 by means of the screws 28.
  • the main circuit 19 shown in FIGS. 11 and 12, comprises a disconnecting member 18 with two identical contact clamps 84 constituting the movable main contact 22.
  • the clamps 84 are carried by the ends of the two parallel arms 86, 88 of the stirrup support 26, and cooperate with contact pads 90, 92 constituting the main contact fixed 20.
  • the contact pads 90, 92 are arranged at the ends of a first cradle 94 U-shaped whose base is fixed to the bushing 14 by the screws 21.
  • Each socket 84 is articulated on the branch 86, 88 corresponding by means of a crankpin 96.
  • the structure of the clamps 84 will be described in detail below, with reference to Figures 17 and 18.
  • the main circuit 19 according to Figures 11 and 12 is suitable for the minimum rating of the circuit breaker.
  • circuit main 19A With four clamps 84 ( Figures 13 and 14).
  • the two clamp circuit 84 intermediate corresponds to that of FIGS. 11 and 12, but the two external clamps 84 are carried by a second, wider support bracket 26A, framing the first bracket 26.
  • the two outer clamps 84 cooperate with contact pads 90A, 92A integral with a second cradle 94A wider than the first internal cradle 94.
  • FIGS. 15 and 16 illustrate a main circuit 19B with six clamps 84, corresponding to the maximum rating of the circuit breaker.
  • the circuit of the four intermediate clamps 84 is identical to that of Figures 13 and 14.
  • the two outer clamps 84 are carried by a third support bracket 26B wider than the second 26A, and cooperate with ranges of contact 90B, 92B arranged at the ends of a third cradle 94B framing the second cradle 94A.
  • the parallel branches 86, 86A, 86B; 88, 88A, 88B of the three stirrups 26, 26A, 26B have substantially similar lengths, so as to position the clamps 84 to the same level after superimposition of common souls. The same is true of the branches of the three cradles 94, 94A, 94B.
  • the maximum rating of 3200A requires the combination of 34B interrupting chambers according to FIGS. 7 and 8, with the main circuits 19B in FIGS. 15 and 16.
  • the envelope 12 has a specific size depending on the combination chosen. It is thus possible to obtain a full range of circuit breakers with the maximum standard parts.
  • the assembly of the circuit breaker 10 begins with the screwing of the stirrups 26, 26A, 26B and cradles 94, 94A, 94B on the bushings 14, 16, followed by the assembly of the interrupting chambers 34.
  • the articulation axis 64 of the support arm 62 is engaged in the corresponding notch 78 follow the pivoting of the cartridge 43 so as to apply the fixing pads 66 against the inner wall of the envelope 12.
  • the installation of the screws 76 ensures the fixing mechanical of the breaking chamber, and the electrical connection of the fixed contact 36 with the bushing 14. Then simply couple the movable contacts 22 and 38 to the shaft 44 of transmission by means of links 48, 50.
  • each contact clip 84 of the disconnector 18 comprises a pair of blades 100, 102 held opposite one another by a elastic device 104 for contact pressure.
  • Each blade 100, 102 is equipped with a first hole 106 for the introduction of the crankpin 96 constituting the pivot axis 24 of the movable main contact 22, and a second hole 108 for coupling the link 48.
  • the elastic device 104 comprises a compression spring 110 passing through a third hole 112 in a direction perpendicular to the blades 100, 102.
  • the setting place of the spring 110 is effected by means of two jumpers 114, 116 of assembly arranged coaxially in the third hole 112 ensuring precompression of the spring 110.
  • Each jumper 114, 116 is provided with two retaining pins 118, 120 diametrically opposite, intended to engage in two notches 122, 124 of the blades 100, 102 in crossing the hole 112 during a first translational movement indicated by the arrow A in Figure 17.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)
EP19960410062 1995-06-12 1996-05-30 Disjoncteur à moyenne tension et à isolement gazeux Expired - Lifetime EP0749139B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507050A FR2735277B1 (fr) 1995-06-12 1995-06-12 Disjoncteur a moyenne tension et a isolement gazeux
FR9507050 1995-06-12

Publications (2)

Publication Number Publication Date
EP0749139A1 EP0749139A1 (fr) 1996-12-18
EP0749139B1 true EP0749139B1 (fr) 2000-02-02

Family

ID=9479963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960410062 Expired - Lifetime EP0749139B1 (fr) 1995-06-12 1996-05-30 Disjoncteur à moyenne tension et à isolement gazeux

Country Status (5)

Country Link
EP (1) EP0749139B1 (zh)
CN (1) CN1068963C (zh)
DE (1) DE69606465D1 (zh)
ES (1) ES2142561T3 (zh)
FR (1) FR2735277B1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2923939A1 (fr) * 2007-11-16 2009-05-22 Schneider Electric Ind Sas Appareil de coupure electrique
CN102306566B (zh) * 2011-08-26 2013-10-02 中国西电电气股份有限公司 发电机断路器触头异步双速运动执行机构
CN107620845A (zh) * 2016-01-08 2018-01-23 临海市永恒汽配科技有限公司 一种可拆卸的插入式连接器
CN115566569B (zh) * 2022-11-09 2023-06-06 黄华集团有限公司 一种环保气体绝缘开关柜

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560682A (en) * 1965-11-30 1971-02-02 Siemens Ag Vacuum interrupter with shunting main contact structure and series disconnecting contact structure
FR2441916A1 (fr) * 1978-11-14 1980-06-13 Merlin Gerin Disjoncteur electrique a autosoufflage equipe d'un dispositif a contacts principaux perfectionnes
FR2494493A1 (fr) * 1980-11-17 1982-05-21 Merlin Gerin Disjoncteur electrique a autosoufflage par rotation de l'arc
FR2677168B1 (fr) * 1991-06-03 1994-06-17 Merlin Gerin Disjoncteur moyenne tension a energie de commande reduite.

Also Published As

Publication number Publication date
FR2735277A1 (fr) 1996-12-13
DE69606465D1 (de) 2000-03-09
FR2735277B1 (fr) 1997-07-18
CN1144969A (zh) 1997-03-12
EP0749139A1 (fr) 1996-12-18
ES2142561T3 (es) 2000-04-16
CN1068963C (zh) 2001-07-25

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