EP0649156B1 - Appareillage de protection formé par l'association d'un disjoncteur en série avec un organe de commutation - Google Patents
Appareillage de protection formé par l'association d'un disjoncteur en série avec un organe de commutation Download PDFInfo
- Publication number
- EP0649156B1 EP0649156B1 EP94410087A EP94410087A EP0649156B1 EP 0649156 B1 EP0649156 B1 EP 0649156B1 EP 94410087 A EP94410087 A EP 94410087A EP 94410087 A EP94410087 A EP 94410087A EP 0649156 B1 EP0649156 B1 EP 0649156B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- switch circuit
- circuit
- circuit breaker
- effector
- 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
Links
- 230000001681 protective effect Effects 0.000 title 1
- 239000012636 effector Substances 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000005012 migration Effects 0.000 claims description 5
- 238000013508 migration Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
- H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
- H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
- H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
- H01H2089/065—Coordination between protection and remote control, e.g. protection job repartition, mutual assistance or monitoring
Definitions
- the effector is formed by a static switch connected in series with the contacts of the circuit breaker.
- the switch is connected between the contact fixed and the input terminal, while the movable contact is connected to the output terminal by through the thermal release, and the electromagnetic release.
- the switch is automatically bypassed when switching from arc to arc horn lower, which is permanently at the potential of the input terminal. To get fast arc switching, it is necessary to bring the conductor as close as possible link extending the arc horn to form the shunting circuit.
- the switch is connected between the triggers and the output terminal, and the two arc guide horns are respectively connected to the input terminal and to the output terminal.
- the switch shunt is established with delay, since it is it is necessary to wait for the opening limit switch of the circuit breaker moving contact to obtain the switching of the arc on the guide horn located at the potential of the terminal exit.
- the object of the invention is to improve the protection and the dielectric strength of a circuit breaker and effector equipment.
- the isolation interval is composed of a first air space between the lower part of the fixed contact and the half-loop electrode, and an intermediate wall of rigid insulating material serving as a contact support fixed, said wall extending opposite the movable contact between the fixed contact and a branch conductor for extending the electrode towards the end of the coil.
- an electrical protection device 10 is formed by the association of a circuit breaker 12 with a remotely controlled effector 14.
- the circuit breaker 12 has a first switch circuit 16 electrically connected in series with a second circuit switch 18 of the effector 14.
- the first switch circuit 16 of the circuit breaker comprises a fixed contact 20 cooperating with a movable contact 22, which is connected by a braid 24 to a bimetallic strip of a trip device thermal 26.
- the foot of the bimetallic strip is connected to an input terminal 28, and to a first horn 30 arc guide.
- the output terminal 32 is connected to one of the ends 34b of a coil 34 of an electromagnetic trip device 36, the other end 34a being at the potential of a switching electrode 38, and a second arc guiding horn 40.
- Fixed contact 20 is electrically isolated from the coil 34 and from the electrode 38 by an insulation gap 42.
- the electromagnetic trip device 36 is provided with a trip device 44 arranged to ensure the triggering of the mechanism 43 when a short-circuit current appears, and to play the role of a striker propelling the movable contact 22 towards the open position.
- the two horns 30, 40 frame an arc extinguishing chamber 45 which is formed by a stacking of deionization sheets.
- the second switch circuit 18 of the effector 14 is connected to a pair of terminals. connection 46, 48 so as to be electrically connected to the fixed contact 20 by a first connection area 50, and at the end 34b of the coil 34 by a second area 52 link.
- the actuation of the contacts of the second switch circuit 18 is operated by a control member 54 for example of the electromagnet type connected to terminals 56, 58 control auxiliaries.
- the two areas 50, 52 are respectively connected to the terminals of connection 46, 48 of the effector 14 by a pair of conductors 60, 62.
- the effector 14 can be constituted either by a remote control switch or by a contactor electromechanical or static, or by any other electrical endurance device, with the setting in series of its second switch circuit 18 in the main circuit of circuit breaker 12.
- the current enters the apparatus 10 via input terminal 28, flows successively through the bimetallic strip of the thermal release 26, the contacts 22, 20 of the first switch circuit 16, the first connection area 50, the conductor 60, the contacts of the second switch circuit 18, the conductor 62, the second connection area 52, and then crosses the coil 34 of the electromagnetic trip device 36 to exit the apparatus 10 through the output terminal 32.
- each control pulse applied to terminals 56, 58 causes a change of state of the second switch circuit 18. If the effector 14 is constituted by a contactor, the second switch circuit 18 is permanently in the closed state in presence of a maintained control signal. The contactor opens automatically that the control signal disappears.
- the appearance of a short-circuit or overcurrent current downstream of the output terminal 32 causes the automatic triggering of mechanism 43 by the action of the trigger electromagnetic 36 or thermal trip unit 26 electrically connected in series with an effector (14).
- the switching of the arc on an electrode (38) when the mechanism following a fault causes shunting of the effector (14).
- the electrode (38) is separated from the fixed contact (20) by an isolation gap (42), which is dimensioned for favor said switching of the arc on the electrode (38) at the start of the opening stroke of the movable contact (22), and to guarantee the dielectric strength in the closed state of the contacts (20, 22, the triggering member 44 of the electromagnetic trigger 36 then maintains the movable contact 22 in the open state until the arc goes out.
- Figure 3 shows the circuit breaker 12 in the closed position.
- the same numbers of benchmarks will be used to designate parts similar to those in Figure 2.
- the contact mobile 22 is carried by a contact arm 64 pivotally mounted on an axis 66.
- the ranges 50, 52 of the effector 14 are connected respectively to the fixed contact 20, and to the end 34a of the coil 34 which is at the potential of the switching electrode 38.
- the presence of the isolation interval 42 guarantees the holding of the isolation between the inlet and the outlet of the effector 14 when the contacts 20, 22 of the first switch circuit 16 are in the closed position, while the second switch circuit 18 is in the open state.
- the isolation interval 42 is composed of a first air space 70 arranged between the lower part of the fixed contact 20 and the electrode 38 shaped as a half-loop, and an intermediate wall 72 of material rigid insulation serving as a support for the fixed contact 20.
- the wall 72 is produced by molding with the plastic housing 74 of the circuit breaker 12, and extends opposite the movable contact 22 between the fixed contact 20 and a conductive branch 76 connecting the electrode 38 to the end 34a of the coil 34.
- the shape of the electrode 38 is adapted to favor the migration of the arc root during the fault breaking phase, while guaranteeing the dielectric withstand when the circuit breaker is closed.
- the electrode 38 is equipped with a rectilinear face 78 arranged in the extension of the plane of the pad of the fixed contact 20.
- the face 78 can also be curved to project from the plane of the fixed contact 20.
- the variant of FIG. 7 relates to a bipolar apparatus 100 formed by the association of a unipolar and neutral circuit breaker 102 and a bipolar effector 104.
- the phase circuit L with its triggers 126 and 136 is identical to the diagram in FIG. 2, the marks of the same parts being assigned a number 1 at the hundred.
- the operation of the phase circuit L of the apparatus 100 has the same advantages as that described above.
- the neutral circuit N the marks of similar parts are assigned a number 2 at the hundred.
- the circuit breaker part of the neutral circuit N is not protected, and is therefore devoid of trip devices.
- the input terminal 228 is connected by the braid 224 to the movable contact 222, and the guide horn assembly 240 and the electrode 238 is connected directly to the output terminal 232.
- connection pad 250 is connected to the fixed contact 220, while the other connection pad 252 is connected to the guide horn 240.
- the effector 214 is connected in series between the fixed contact 220 and the switching electrode 238. The two parts 114, 214 of the bipolar effector 104 are thus de-energized when the contacts 120, 220; 122, 222 of the circuit breaker 102 are open.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
- le disjoncteur, comprenant un premier circuit interrupteur à contacts fixe et mobile, un mécanisme piloté par un déclencheur électromagnétique à bobine de commande et par un déclencheur thermique, une paire de première et deuxième cornes de guidage d'arc associée à une électrode de commutation, disposée au voisinage des contacts du premier circuit interrupteur, une chambre d'extinction d'arc dans le circuit des déclencheurs, une borne d'entrée, et une borne de sortie,
- l'effecteur ayant un deuxième circuit interrupteur agencé pour être connecté électriquement en série avec ledit premier circuit interrupteur, lorsque ce dernier se trouve dans l'état fermé, et pour être automatiquement shunté par la commutation de l'arc sur l'électrode lors du déclenchement du mécanisme à la suite d'un défaut.
- le deuxième circuit interrupteur de l'effecteur est raccordé au contact fixe du premier circuit interrupteur, et à ladite extrémité de la bobine,
- l'intervalle d'isolement est conformé pour favoriser la migration rapide de la racine d'arc sur l'électrode lors de l'ouverture sur défaut du disjoncteur et pour garantir la tenue diélectrique dans l'état fermé du disjoncteur, et dans l'état ouvert de l'effecteur.
- la figure 1 est une vue schématique d'un appareillage électrique unipolaire selon l'invention,
- la figure 2 montre le circuit électrique de l'appareillage selon la figure 1,
- la figure 3 représente une vue en élévation du disjoncteur après enlèvement du couvercle, le disjoncteur étant dans l'état fermé,
- les figures 4 et 5 sont des vues identiques de la figure 3, respectivement au début et à la fin de la course d'ouverture du contact mobile du disjoncteur,
- la figure 6 montre une vue de détail de l'intervalle d'isolement,
- la figure 7 est une vue identique de la figure 2, représentant une variante de réalisation formée par l'association d'un disjoncteur unipolaire et neutre et d'un effecteur bipolaire.
Claims (6)
- Appareillage de protection électrique (10, 100) formé par l'association d'un disjoncteur (12, 102) et d'un effecteur (14,104),le disjoncteur (12,102) comprenant un premier circuit interrupteur (16) à contacts fixe et mobile (20,22 ; 120, 122 ; 220, 222), un mécanisme (43) piloté par un déclencheur électromagnétique (36,136) à bobine (34,134) de commande et par un déclencheur thermique (26, 126), une paire de première et deuxième cornes de guidage d'arc (30, 40; 130, 140) associée à une électrode de commutation (38, 138, 238) disposée au voisinage des contacts du premier circuit interrupteur (16), une chambre d'extinction d'arc (45, 145) dans le circuit des déclencheurs, une borne d'entrée (28, 128, 228) et une borne de sortie (32, 132, 232),l'effecteur (14, 104) ayant un deuxième circuit interrupteur (18, 118, 218) agencé pour être connecté électriquement en série avec ledit premier circuit interrupteur lorsque ce dernier se trouve dans l'état fermé, et pour être automatiquement shunté par la commutation de l'arc sur l'électrode (38, 138, 238) lors du déclenchement du mécanisme (43) à la suite d'un défaut,l'électrode de commutation (38, 138) est séparée du contact fixe (20, 120) par un intervalle d'isolement (42), et est reliée à l'une des extrémités (34a) de la bobine (34, 134) de commande du déclencheur électromagnétique (36, 136),le deuxième circuit interrupteur (18, 118) de l'effecteur (14, 104) est raccordé au contact fixe (20) du premier circuit interrupteur (16, 116), et à ladite extrémité (34a) de la bobine (34),l'intervalle d'isolement (42) est conformé pour favoriser la migration rapide de la racine d'arc sur l'électrode (38, 138) lors de l'ouverture sur défaut du disjoncteur (12, 112) et pour garantir la tenue diélectrique dans l'état fermé du disjoncteur, et dans l'état ouvert de l'effecteur.
- Appareillage de protection électrique selon la revendication 1, caractérisé en ce que l'intervalle d'isolement (42) est composé d'un premier espace d'air (70) situé entre la partie inférieure du contact fixe (20) et l'électrode (38) en forme de demi-boucle, et d'une paroi (72) intermédiaire en matériau isolant rigide servant de support au contact fixe (20), ladite paroi s'étendant à l'opposé du contact mobile (22) entre le contact fixe (20) et une branche (76) conductrice de prolongement de l'électrode (38) vers l'extrémité (34a) de la bobine (34).
- Appareillage de protection électrique selon la revendication 2, caractérisé en ce que l'électrode (38) est équipée d'une face (78) sensiblement rectiligne disposée dans le prolongement du plan de la pastille du contact fixe (20) associé au premier circuit interrupteur (16).
- Appareillage de protection électrique selon la revendication 3, caractérisé en ce que l'électrode (38) est dotée d'une face bombée faisant saillie du plan passant par le contact fixe (20) associé au premier circuit interrupteur (16).
- Appareillage de protection électrique selon la revendication 2, caractérisé en ce que la paroi (72) isolante est réalisée par moulage avec le boítier (74) du disjoncteur (12).
- Appareillage de protection électrique selon l'une des revendications 1 à 5, caractérisé en ce que le contact mobile (22, 122) du premier circuit interrupteur (16, 116) est au potentiel de la borne d'entrée (28, 128), l'autre extrémité (34b) de la bobine (34, 134) à l'opposé de l'électrode (38,138) étant raccordée à la borne de sortie (32, 132).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9312407A FR2711271B1 (fr) | 1993-10-15 | 1993-10-15 | Appareillage de protection formé par l'association d'un disjoncteur en série avec un effecteur. |
FR9312407 | 1993-10-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0649156A1 EP0649156A1 (fr) | 1995-04-19 |
EP0649156B1 true EP0649156B1 (fr) | 1999-07-28 |
Family
ID=9451956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94410087A Expired - Lifetime EP0649156B1 (fr) | 1993-10-15 | 1994-10-11 | Appareillage de protection formé par l'association d'un disjoncteur en série avec un organe de commutation |
Country Status (5)
Country | Link |
---|---|
US (1) | US5493264A (fr) |
EP (1) | EP0649156B1 (fr) |
DE (1) | DE69419690T2 (fr) |
ES (1) | ES2136183T3 (fr) |
FR (1) | FR2711271B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5614878A (en) * | 1995-09-07 | 1997-03-25 | Siemens Energy & Automation, Inc. | Two pole remote controlled circuit breaker |
FR2846478B1 (fr) * | 2002-10-25 | 2004-12-24 | Schneider Electric Ind Sas | Dispositif de protection contre les surtensions a electrode mobile |
CN102543606A (zh) * | 2012-01-19 | 2012-07-04 | 江苏普华力拓电器股份有限公司 | 一种微型断路器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL119357B (fr) * | 1940-04-23 | |||
US4456832A (en) * | 1979-01-08 | 1984-06-26 | Southern California Edison Company | Circuit breaker control device |
FR2533363B1 (fr) * | 1982-09-17 | 1985-11-08 | Merlin Gerin | Disjoncteur electrique a courant alternatif equipe d'un declencheur magnetothermique et d'un organe de commutation statique a telecommande |
FR2535520A1 (fr) * | 1982-11-03 | 1984-05-04 | Merlin Gerin | Appareil de coupure de courant telecommande |
FR2584529B1 (fr) * | 1985-07-04 | 1995-01-06 | Merlin Gerin | Disjoncteur-contacteur electrique, notamment pour des batteries de condensateurs |
JPH01298622A (ja) * | 1988-05-26 | 1989-12-01 | Matsushita Electric Works Ltd | 回路遮断器 |
DE3824027A1 (de) * | 1988-07-15 | 1990-01-18 | Asea Brown Boveri | Elektrisches schaltgeraet |
JPH02100230A (ja) * | 1988-10-06 | 1990-04-12 | Mitsubishi Electric Corp | 遠隔操作式回路遮断器 |
-
1993
- 1993-10-15 FR FR9312407A patent/FR2711271B1/fr not_active Expired - Fee Related
-
1994
- 1994-10-04 US US08/317,543 patent/US5493264A/en not_active Expired - Fee Related
- 1994-10-11 ES ES94410087T patent/ES2136183T3/es not_active Expired - Lifetime
- 1994-10-11 DE DE69419690T patent/DE69419690T2/de not_active Expired - Lifetime
- 1994-10-11 EP EP94410087A patent/EP0649156B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2711271B1 (fr) | 1995-12-22 |
FR2711271A1 (fr) | 1995-04-21 |
ES2136183T3 (es) | 1999-11-16 |
EP0649156A1 (fr) | 1995-04-19 |
DE69419690D1 (de) | 1999-09-02 |
US5493264A (en) | 1996-02-20 |
DE69419690T2 (de) | 2000-04-06 |
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