EP2037477B1 - Electric device with differential protection - Google Patents
Electric device with differential protection Download PDFInfo
- Publication number
- EP2037477B1 EP2037477B1 EP08354048A EP08354048A EP2037477B1 EP 2037477 B1 EP2037477 B1 EP 2037477B1 EP 08354048 A EP08354048 A EP 08354048A EP 08354048 A EP08354048 A EP 08354048A EP 2037477 B1 EP2037477 B1 EP 2037477B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- differential protection
- circuit breaker
- circuit
- compartment
- partition
- 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.)
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Links
- 239000004020 conductor Substances 0.000 claims description 48
- 238000005192 partition Methods 0.000 claims description 34
- 230000007935 neutral effect Effects 0.000 claims description 29
- 238000004804 winding Methods 0.000 claims description 21
- 238000005476 soldering Methods 0.000 claims 1
- 210000001520 comb Anatomy 0.000 description 4
- 235000021183 entrée Nutrition 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 244000126211 Hericium coralloides Species 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
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- 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
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
- H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
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- 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
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- 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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
Definitions
- the invention relates to the field of electrical devices with differential protection such as differential circuit breakers, or differential switches, or other combination of protective devices or control such as contactors.
- the French patent application FR2715767 describes an electrical device with differential protection comprising, in an insulating housing, a circuit breaker part and a differential protection part, arranged on either side of an insulating partition.
- the partition is equipped with bushings through which pass phase and neutral circuit connection conductors.
- the circuit breaker portion has switches interposed on each of the phase and neutral circuits with fixed contacts and movable contacts controlled by a circuit breaker mechanism.
- the differential protection portion comprises, in turn, a differential transformer having two primary windings formed by the phase and neutral circuits.
- the electrical device described in the aforementioned patent application further comprises input and output terminals of the phase and neutral circuits disposed on two lateral faces of the housing.
- such an electrical device with differential protection comprises a phase circuit 11 and a neutral circuit 12 in a housing 13.
- the housing comprises two main faces 14, a first lateral face 15 and a second lateral face 16.
- the phase circuit extends between an input terminal 17 and an output terminal 18.
- the neutral circuit extends, meanwhile, between an input terminal 19 and an output terminal 20.
- the input terminals 17, 19 are arranged on the second side face 16.
- the output terminals 18, 20 are, for their part, arranged on the first lateral face 15.
- the device comprises a circuit-breaker part 21 and a differential-protection part 22.
- the differential-protection part is separated from the circuit-breaker part by a partition 23 substantially parallel to the main faces 14 of the case 13.
- a differential transformer 31 makes it possible to measure the differential current.
- This transformer is equipped with two primary windings 32, 33 respectively corresponding to the phase circuit and to the neutral circuit, as well as a secondary winding, not shown, which is connected to an electromagnetic trip relay, the latter being in mechanical connection with a mechanism circuit breaker circuit breaker.
- the circuit breaker portion 21 comprises a thermal tripping mechanism 42 and an electromagnetic tripping mechanism 41 arranged on the phase circuit.
- the circuit breaker portion further includes a switch 43 interposed on the phase circuit, and a switch 44 interposed on the neutral circuit.
- the circuit breaker part comprises also a compartment 45 containing at least the switch and an interrupting chamber not shown.
- the compartment is formed by a main face of the housing 3, a portion of the side faces 15, 16 of said housing 3 and the partition 23.
- the compartment 45 has a wall, in this case the partition 23 separating the differential protection portion of the circuit breaker part, provided with first bushings 51, 52, 53, 54.
- the device comprises connecting conductors 55, 56, 57, 58 passing from the compartment of the circuit breaker part to the differential protection part, through these first bushings.
- the connecting conductors 55, 56 make it possible to connect the primary winding 32 to the phase circuit 11.
- the connecting conductors 57, 58 make it possible, in turn, to connect the primary winding 33 to the neutral circuit 11.
- the differential protection part 22 has recesses 59 on the side faces in the differential protection part. In this way, the input and output terminals can be electrically connected through connection combs not shown, without the positioning of the comb teeth vis-a-vis with the side faces in the protection part. differential is hindered.
- FIG. 2 Another example of a differential protection device according to the prior art is represented on the figures 2 and 3 .
- a view of the circuit breaker portion behind the main face of the insulating housing 60 makes it possible to visualize the breaking means.
- FIG 3 a view of the partition on the side of the differential protection part can illustrate the connection between the circuit breaker part and said differential protection part.
- the circuit breaker part comprises a neutral circuit 61 extending between a first input terminal, whose range 62 is represented on the figure 2 , and a first output terminal, whose range 63 is represented on the figure 2 .
- the first input terminal is connected to a movable contact 64 of a switch of the neutral circuit, via a braid not shown. This movable contact is actuated by an opening mechanism 65 through a not shown handle or by triggering means.
- the switch of the neutral circuit comprises a fixed contact 67. The neutral circuit extends between this fixed contact 67 and the first output terminal 63, in passing through a primary winding of the transformer of the differential protection part.
- the passage in the differential part is through the connecting conductors 68, 69 through the partition separating the circuit breaker portion of the differential protection portion through first bushings 71, 72.
- the circuit breaker portion further comprises a partially visible phase circuit 73 and extending between a second non-visible input terminal on the figure 2 and a second output terminal 74.
- the switch of the phase circuit not visible on the figure 2 is actuated by the same opening mechanism 65 through the handle or by triggering means such as the electromagnetic tripping means 75.
- the arc formed between the contacts of the switch of the phase circuit is dissipated to With the aid of an arc chamber 76.
- the neutral circuit the phase circuit passes through a primary winding of the transformer of the differential protection part, via the connecting conductors passing through the partition separating the circuit breaker part of the differential protection part.
- the partition 81 separating the circuit breaker part of the differential part comprises bushings allowing the passage of connecting conductors between the two parts.
- the connecting conductors referenced 68, 69 of the neutral circuit through the first bushings 71, 72.
- the partition further comprises bushings 82, 83 to allow the passage of connecting conductors 84, 85 of the phase circuit .
- the connecting conductors open into a compartment of the circuit breaker part containing the breaking means, in particular the breaking chamber 76 and the switches 43, 44.
- the connecting conductors and currents in said conductors may have a negative impact with respect to an initial design of the breaking means as such.
- such a device comprises a circuit breaker block 91 equipped with a phase circuit 92 extending between an input terminal 93 and an output terminal 94 and a neutral circuit 95 extending between an input terminal 96 and an output terminal 97.
- the output terminals 94, 97 are arranged on a first side face 98.
- the input terminals 93, 96 are, for their part, disposed on a second side face 99.
- the circuit breaker block comprises a mechanism thermal trip 102, an electromagnetic trip mechanism 101, and switches 103, 104 interposed on each circuit.
- the device represented in figure 4 also comprises a differential protection block 105 comprising a differential transformer and two primary windings 106, 107 respectively corresponding to the phase circuit and the neutral circuit.
- the connection of the phase and neutral circuits with the primary windings of the differential protection block is carried out via connecting conductors 106, 107 between the output terminals 94, 97 of the circuit breaker block and the inputs of the differential protection block. .
- the output terminals of the differential protection device resulting from the combination of the two blocks are transferred to two output terminals 108, 109 of the differential protection block.
- a disadvantage of such a device is that the output terminals are not arranged in a manner allowing an electrical connection through connecting combs, unless the teeth of the combs face with the output terminals of the circuit breaker part.
- the implementation of a differential protection device comprising two separate blocks requires an additional operation for the user, and does not allow a comb feed from below.
- the wall of the compartment provided with the at least one first crossing is substantially parallel to the side faces of the housing, and the connecting conductors also pass through at least a second crossing disposed on the partition separating the portion to differential protection of the circuit breaker part.
- the partition comprises a first portion separating the differential protection part from the compartment of the circuit breaker part and a second part separating the differential protection part from a connection zone, the at least one second crossing being arranged on the second part. of said partition.
- the compartment of the circuit breaker part comprises a withdrawal of the wall provided with the at least a first crossing relative to the first lateral face of the housing, so as to allow the teeth of the connecting comb to be housed opposite each other. with said first side face for connection.
- the withdrawal is partitioned.
- the output terminals are arranged on the first side face.
- the output terminals are arranged on the first side face of the differential protection part.
- a first output terminal of the circuit breaker is disposed on the first side face in the circuit breaker portion and a second output terminal is disposed on the first side face in the differential protection portion.
- each output terminal comprises a fixed contact piece against which, during connection, an electrical conductor or a comb tooth is clamped via a movable contact piece controlled by the rotation of a clamping screw.
- a portion of the connecting conductors is housed in the differential protection portion in a space defined by the partition, the clamping screw and the movable contact piece of the output terminal closest to the partition.
- a portion of the connecting conductors is housed in a connection zone disposed in the withdrawal of the compartment of the circuit breaker part.
- connection between the connecting conductors is made by electric welding.
- a connection between the connecting conductors can also be made by elastic electrical contact.
- the figure 1 schematically represents an electrical device with differential protection according to the prior art comprising, in an insulating housing, a circuit breaker part and a differential protection part.
- the figure 2 is a view of the circuit breaker portion of a differential protection electrical device according to the prior art having, in an insulating housing, a circuit breaker portion and a differential protection portion.
- the figure 3 represents a view of the partition separating the differential part of the circuit-breaker part, on the side of the differential part, of the device represented in FIG. figure 2 .
- the figure 4 schematically represents an electrical device with differential protection according to the prior art consisting of the combination of a differential protection block and a circuit breaker block, the two blocks being separable.
- the figure 5 schematically represents an electrical device with differential protection according to the invention.
- the figure 6 schematically represents an electrical device with differential protection according to a variant of the invention.
- the figure 7 represents a three-dimensional view of an example of an electrical device with differential protection according to the invention.
- the figure 8 represents a view from above of the electrical device with differential protection of the figure 7 .
- the figure 9 represents a side view of the first side face of the housing of the differential protection electrical device of the figure 7 .
- an example of a device with differential protection comprises a phase circuit 201 and a neutral circuit 202 in a housing 203.
- the housing comprises two main faces 204, a first lateral face 205 and a second lateral face 206.
- Each circuits extends between an input terminal 207, 208 and an output terminal 209, 210.
- the input terminals 207, 208 are arranged on the second side face 206.
- the output terminals 209, 210 are, as to them, arranged on the first side face 205.
- the device comprises a circuit breaker portion 211 and a differential protection portion 212.
- the differential protection portion is separated from the circuit breaker portion by a partition 213 substantially parallel to the main faces 204, and extending over the entire length of the housing 203.
- a differential transformer 221 is equipped with two primary windings 222, 223 respectively corresponding to the phase circuit and the neutral circuit, as well as a secondary winding, not shown, which is connected to an electromagnetic trip relay. , the latter being in mechanical connection with a circuit breaker mechanism of the circuit breaker part.
- the circuit breaker portion 211 includes at least one trigger mechanism, in this case a thermal trip mechanism 232 and an electromagnetic trip mechanism 231 disposed on the phase circuit.
- the circuit breaker portion further includes switches 233, 234 interposed on the phase and neutral circuits.
- the circuit breaker part also comprises a compartment 235 containing at least the switch and a breaking chamber not shown.
- the compartment 235 is formed by a main face 204 of the housing 203, a portion of the second side face 206 of said housing and a first portion 214 of the partition 213.
- the first portion 214 of the partition 213 separates the protected portion differential 212 compartment of the circuit breaker portion 211 and thus forms one of the walls of said compartment.
- the partition further comprises a second portion 215 separating the differential portion 212 from a connecting zone 216.
- the compartment 235 has a wall 241 provided with first bushings 242, 243. These first bushings allow the passage of the connecting conductors 244, 245 passing from the compartment 235 of the circuit breaker part 211 to the differential protection part 212, via the connection zone. 216.
- Each connecting conductor 244, 245 is connected to one end of one of the primary windings 222, 223 of the phase circuit 201 and the neutral circuit 202.
- the other ends of each of the primary windings 222, 223 are, for their part, they, connected to the output terminals 209, 210.
- the output terminals of the differential protection device are transferred to the differential part 212.
- the wall 241 of the compartment provided with the first bushings 242, 243 is substantially parallel to the lateral faces 205, 206 of the housing 203.
- the connecting conductors 244, 245 and their corresponding bushings 242, 243 are located in an area of the circuit breaker part close to the connection terminals or, in other words, a remote zone separated from the breaking means.
- the connecting conductors also pass through at least a second bushing 251 disposed on the partition 213 separating the differential protection portion 211 from the circuit breaker portion 212.
- the second bushing 251 is disposed on the second part 215 defined above said partition 213.
- the connecting conductors do not hinder the positioning of a connecting comb, and more particularly the housing of the teeth of such a comb-vis-à-vis -vis with the first side face in the circuit breaker part.
- the circuit breaker portion 211 and the differential protection portion 212 further include recesses 261, 262 on the lateral faces which do not include terminals.
- the input and output terminals disposed on the side faces, as well as the recesses 261, 262 of each part of the device are, on each side face, spaced apart by the same distance.
- the terminals can thus be connected electrically via a connection comb.
- the teeth of the comb which are not electrically connected can nevertheless be accommodated in the recesses of these lateral faces.
- the device represented on the figure 6 is another embodiment comprising most of the elements represented on the figure 5 except that the output terminal 210 is disposed on the first side face of the circuit breaker portion 211 and the other output terminal 209 is disposed on the first side face of the differential protection portion 212.
- the terminals of the first lateral face of each part of the device are spaced apart by a wider distance than in the case shown in figure 5 .
- these output terminals can be electrically connected through a connecting comb having a greater gap between each of the teeth of the comb.
- the differential protection device 301 shown on the figures 7 , 8 and 9 comprises two main faces 302, a first lateral face 303, a second lateral face 304 and a front face 305.
- a handle 306 makes it possible to actuate the moving contacts.
- the first side face comprises, on the differential protection part, two output terminals 311, 312.
- Each output terminal 311, 312 comprises a fixed contact piece 313, 314 against which, during connection, an electrical conductor or a tooth connecting comb is clamped through a movable contact piece, in this case a terminal cage 313, 314, controlled by the rotation of a clamping screw 317, 318.
- the breaking means of the circuit breaker part are housed in a compartment having a wall 331 provided with first bushings 332, 333. These first bushings allow the passage of the connecting conductors passing from the compartment of the circuit breaker part to the differential protection part.
- Each connecting conductor comprises a portion of rectangular section 335, 336 passing through the wall 331 through the first bushings 332, 333.
- Each connecting conductor further comprises a circular section portion 337, 338 connected to each of the sectional portions. rectangular by welding or any other means of connection.
- the connecting conductors 335, 336, 337, 338 make it possible to connect the phase and neutral circuits of the circuit breaker portion to one end of one of the primary windings of each of said circuits. The other ends of each of the primary windings are connected to the output terminals 311, 312.
- the wall 331 of the compartment of the circuit breaker portion provided with first bushings 332, 333 is substantially parallel to the side faces 303, 304 of the housing.
- the connecting conductors 335, 336, 337, 338 and their corresponding bushings 332, 333 are located in a zone of the remote circuit breaker part and separated from the breaking means.
- the circular section portions 337, 338 of the connecting conductors also pass through at least one second non-visible bushing disposed on the partition 351 separating the differential protection portion of the circuit breaker portion.
- the second bushing is disposed on a portion of said partition 351 separating the differential portion of a connection zone 352.
- the compartment of the circuit breaker part comprises a withdrawal of the wall 331 provided with first bushings 332, 333 relative to the first side face 303 of the housing.
- the connecting conductors 335, 336, 337, 338 are therefore housed in this connection zone 352 disposed in the withdrawal of the compartment of the circuit breaker part.
- This removal allows the housing of the teeth of a connecting comb vis-à-vis with the side face of the circuit breaker part without electrical connection.
- the removal may optionally be partitioned to increase the electrical isolation between the comb teeth.
- the connecting conductors 335, 336, 337, 338 do not hinder the positioning of a connecting comb, and more particularly the housing of the teeth of such a comb.
- the input and output terminals allow electrical connection via connection combs.
- the differential protection device can be electrically connected by any other means known to those skilled in the art such as, for example, wire conductors.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
L'invention relève du domaine des dispositifs électriques à protection différentielle tels que des disjoncteurs différentiels, ou des interrupteurs différentiels, ou autre combinaison d'appareils de protection ou de commande tel que des contacteurs.The invention relates to the field of electrical devices with differential protection such as differential circuit breakers, or differential switches, or other combination of protective devices or control such as contactors.
En particulier, l'invention concerne un dispositif électrique à protection différentielle modulaire comprenant :
- un circuit de phase et un circuit de neutre qui s'étendent chacun entre une borne d'entrée et une borne de sortie, lesdites bornes autorisant un raccordement électrique par l'entremise d'un peigne de raccordement,
- un boîtier comportant deux faces principales, une première et une seconde face latérale sur lesquelles sont disposées les bornes d'entrée et de sortie,
- une partie disjoncteur comportant un mécanisme de déclenchement, un interrupteur interposé sur chaque circuit, une chambre de coupure, et un compartiment renfermant au moins l'interrupteur et la chambre de coupure, ledit compartiment présentant une paroi munie d'au moins une première traversée,
- une partie à protection différentielle comportant un transformateur différentiel équipé d'enroulements primaires, ladite partie à protection différentielle étant séparée de la partie disjoncteur par une cloison sensiblement parallèle aux faces principales, et
- des conducteurs de liaison permettant de connecter les enroulements primaires au circuit de phase et au circuit de neutre, lesdits conducteurs de liaison passant du compartiment de la partie disjoncteur à la partie à protection différentielle, à travers la au moins une première traversée.
- a phase circuit and a neutral circuit which each extend between an input terminal and an output terminal, said terminals allowing an electrical connection via a connecting comb,
- a housing comprising two main faces, a first and a second lateral face on which the input and output terminals are arranged,
- a circuit breaker part comprising a tripping mechanism, a switch interposed on each circuit, a breaking chamber, and a compartment enclosing at least the switch and the breaking chamber, said compartment having a wall provided with at least a first crossing,
- a differential protection part comprising a differential transformer equipped with primary windings, said differential protection part being separated from the circuit-breaker part by a partition substantially parallel to the main faces, and
- connecting conductors for connecting the primary windings to the phase circuit and the neutral circuit, said connecting conductors passing from the compartment of the circuit breaker part to the differential protection part, through the at least one first crossing.
La demande de brevet français
Comme cela est représenté à la
Le dispositif comprend une partie disjoncteur 21 et une partie à protection différentielle 22. La partie à protection différentielle est séparée de la partie disjoncteur par une cloison 23 sensiblement parallèle aux faces principales 14 du boîtier 13.The device comprises a circuit-
Dans la partie à protection différentielle 22, un transformateur différentiel 31 permet de mesurer le courant différentiel. Ce transformateur est équipé de deux enroulements primaires 32, 33 correspondant respectivement au circuit de phase et au circuit de neutre, ainsi qu'un enroulement secondaire non représenté qui est connecté à un relais électromagnétique de déclenchement, ce dernier étant en liaison mécanique avec un mécanisme coupe-circuit de la partie disjoncteur.In the
La partie disjoncteur 21 comporte un mécanisme de déclenchement thermique 42 et un mécanisme de déclenchement électromagnétique 41 disposés sur le circuit de phase. La partie disjoncteur comporte, en outre, un interrupteur 43 interposé sur le circuit de phase, et un interrupteur 44 interposé sur le circuit de neutre. La partie disjoncteur comporte également un compartiment 45 renfermant au moins l'interrupteur et une chambre de coupure non représentée.The
Comme cela est représenté à la
Par ailleurs, la partie à protection différentielle 22 comporte des évidements 59 sur les faces latérales dans la partie à protection différentielle. De cette façon, les bornes d'entrée et de sortie peuvent être raccordées électriquement par l'entremise de peignes de raccordement non représentés, sans que le positionnement des dents du peigne en vis-à-vis avec les faces latérales dans la partie à protection différentielle ne soit entravé.On the other hand, the
Un autre exemple de dispositif à protection différentielle selon l'art antérieur est représenté sur les
Comme cela est visible sur la
Comme cela est visible sur la
Dans les dispositifs représentés sur les
Des dispositifs à protection différentielle comportant des moyens de coupure clairement séparés de la partie à protection différentielle sont connus de l'homme du métier. Par exemple, la demande de brevet français
Comme cela est représenté schématiquement à la
Le dispositif représenté à la
Un inconvénient d'un tel dispositif est que les bornes de sortie ne sont pas disposées d'une façon permettant un raccordement électrique par l'entremise de peignes de raccordement, à moins de caser les dents du peignes en vis-à-vis avec les bornes de sortie de la partie disjoncteur. De plus, la mise en oeuvre d'un dispositif à protection différentielle comportant deux blocs séparés nécessite une opération supplémentaire pour l'utilisateur, et ne permet pas une alimentation par peigne par le bas.A disadvantage of such a device is that the output terminals are not arranged in a manner allowing an electrical connection through connecting combs, unless the teeth of the combs face with the output terminals of the circuit breaker part. In addition, the implementation of a differential protection device comprising two separate blocks requires an additional operation for the user, and does not allow a comb feed from below.
Le document "
L'invention vise à remédier aux problèmes techniques des dispositifs de l'art antérieur en proposant un dispositif électrique à protection différentielle modulaire comprenant :
- un circuit de phase et un circuit de neutre qui s'étendent chacun entre une borne d'entrée et une borne de sortie, lesdites bornes autorisant un raccordement électrique par l'entremise d'un peigne de raccordement,
- un boîtier comportant deux faces principales, une première et une seconde face latérale sur lesquelles sont disposées les bornes d'entrée et de sortie,
- une partie disjoncteur comportant un mécanisme de déclenchement, un interrupteur interposé sur chaque circuit, une chambre de coupure, et un compartiment renfermant au moins l'interrupteur et la chambre de coupure, ledit compartiment présentant une paroi munie d'au moins une première traversée,
- une partie à protection différentielle comportant un transformateur différentiel équipé d'enroulements primaires, ladite partie à protection différentielle étant séparée de la partie disjoncteur par une cloison sensiblement parallèle aux faces principales, et
- des conducteurs de liaison permettant de connecter les enroulements primaires au circuit de phase et au circuit de neutre, lesdits conducteurs de liaison passant du compartiment de la partie disjoncteur à la partie à protection différentielle, à travers la au moins une première traversée.
- a phase circuit and a neutral circuit which each extend between an input terminal and an output terminal, said terminals allowing an electrical connection via a connecting comb,
- a housing comprising two main faces, a first and a second lateral face on which the input and output terminals are arranged,
- a circuit breaker part comprising a tripping mechanism, a switch interposed on each circuit, a breaking chamber, and a compartment enclosing at least the switch and the breaking chamber, said compartment having a wall provided with at least a first crossing,
- a differential protection part comprising a differential transformer equipped with primary windings, said differential protection part being separated from the circuit-breaker part by a partition substantially parallel to the main faces, and
- connecting conductors for connecting the primary windings to the phase circuit and the neutral circuit, said connecting conductors passing from the compartment of the circuit breaker part to the differential protection part, through the at least one first crossing.
Dans le dispositif de l'invention, la paroi du compartiment munie de la au moins une première traversée est sensiblement parallèle aux faces latérales du boitier, et les conducteurs de liaison passent également par au moins une seconde traversée disposée sur la cloison séparant la partie à protection différentielle de la partie disjoncteur.In the device of the invention, the wall of the compartment provided with the at least one first crossing is substantially parallel to the side faces of the housing, and the connecting conductors also pass through at least a second crossing disposed on the partition separating the portion to differential protection of the circuit breaker part.
De préférence, la cloison comporte une première partie séparant la partie à protection différentielle du compartiment de la partie disjoncteur et une seconde partie séparant la partie à protection différentielle d'une zone de liaison, la au moins une seconde traversée étant disposée sur la seconde partie de ladite cloison.Preferably, the partition comprises a first portion separating the differential protection part from the compartment of the circuit breaker part and a second part separating the differential protection part from a connection zone, the at least one second crossing being arranged on the second part. of said partition.
De préférence, le compartiment de la partie disjoncteur comporte un retrait de la paroi munie de la au moins une première traversée par rapport la première face latérale du boîtier, de façon à autoriser le logement des dents du peigne de raccordement en vis-à-vis avec ladite première face latérale pour le raccordement. Avantageusement, le retrait est cloisonné.Preferably, the compartment of the circuit breaker part comprises a withdrawal of the wall provided with the at least a first crossing relative to the first lateral face of the housing, so as to allow the teeth of the connecting comb to be housed opposite each other. with said first side face for connection. Advantageously, the withdrawal is partitioned.
Selon un mode de réalisation, les bornes de sortie sont disposées sur la première face latérale. Avantageusement, les bornes de sortie sont disposées sur la première face latérale de la partie à protection différentielle. Alternativement, une première borne de sortie du disjoncteur est disposée sur la première face latérale dans la partie disjoncteur et une deuxième borne de sortie est disposée sur la première face latérale dans la partie à protection différentielle.According to one embodiment, the output terminals are arranged on the first side face. Advantageously, the output terminals are arranged on the first side face of the differential protection part. Alternatively, a first output terminal of the circuit breaker is disposed on the first side face in the circuit breaker portion and a second output terminal is disposed on the first side face in the differential protection portion.
Selon un mode de réalisation, chaque borne de sortie comporte une pièce de contact fixe contre laquelle, lors du raccordement, un conducteur électrique ou une dent du peigne est serré par l'intermédiaire d'une pièce de contact mobile commandée par la rotation d'une vis de serrage. De préférence, une partie des conducteurs de liaison est logée dans la partie à protection différentielle dans un espace délimité par la cloison, la vis de serrage et la pièce de contact mobile de la borne de sortie la plus proche de la cloison.According to one embodiment, each output terminal comprises a fixed contact piece against which, during connection, an electrical conductor or a comb tooth is clamped via a movable contact piece controlled by the rotation of a clamping screw. Preferably, a portion of the connecting conductors is housed in the differential protection portion in a space defined by the partition, the clamping screw and the movable contact piece of the output terminal closest to the partition.
Selon un mode de réalisation, une partie des conducteurs de liaison est logée dans une zone de liaison disposée dans le retrait du compartiment de la partie disjoncteur.According to one embodiment, a portion of the connecting conductors is housed in a connection zone disposed in the withdrawal of the compartment of the circuit breaker part.
De préférence, une connexion entre les conducteurs de liaison est réalisée par soudure électrique. Une connexion entre les conducteurs de liaison peut également être réalisée par contact électrique élastique.Preferably, a connection between the connecting conductors is made by electric welding. A connection between the connecting conductors can also be made by elastic electrical contact.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui suit de modes particuliers de réalisation de l'invention, donnés à titre d'exemples non limitatifs, et représentés dans les figures annexées.Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention, given by way of non-limiting examples, and shown in the accompanying figures.
La
La
La
La
La
La
La
La
La
Comme cela est représenté schématiquement à la
Le dispositif comprend une partie disjoncteur 211 et une partie à protection différentielle 212. La partie à protection différentielle est séparée de la partie disjoncteur par une cloison 213 sensiblement parallèle aux faces principales 204, et s'étendant sur toute la longueur du boîtier 203.The device comprises a
Dans la partie à protection différentielle 212, un transformateur différentiel 221 est équipé de deux enroulements primaires 222, 223 correspondant respectivement au circuit de phase et au circuit de neutre, ainsi qu'un enroulement secondaire non représenté qui est connecté à un relais électromagnétique de déclenchement, ce dernier étant en liaison mécanique avec un mécanisme coupe-circuit de la partie disjoncteur.In the
La partie disjoncteur 211 comporte au moins un mécanisme de déclenchement, en l'occurrence un mécanisme de déclenchement thermique 232 et un mécanisme de déclenchement électromagnétique 231 disposés sur le circuit de phase. La partie disjoncteur comporte, en outre, des interrupteurs 233, 234 interposés sur les circuits de phase et de neutre. La partie disjoncteur comporte également un compartiment 235 renfermant au moins l'interrupteur et une chambre de coupure non représentés.The
Comme cela est représenté à la
Le compartiment 235 présente une paroi 241 munie de premières traversées 242, 243. Ces premières traversées permettent le passage des conducteurs de liaison 244, 245 passant du compartiment 235 de la partie disjoncteur 211 à la partie à protection différentielle 212, via la zone de liaison 216. Chaque conducteur de liaison 244, 245 est connecté à une extrémité d'un des enroulements primaires 222, 223 du circuit de phase 201 et du circuit de neutre 202. Les autres extrémités de chacun des enroulements primaires 222, 223 sont, quant à elles, connectées aux bornes de sortie 209, 210. Ainsi, les bornes de sorties du dispositif à protection différentielle sont reportées sur la partie différentielle 212.The
Selon un aspect de l'invention, la paroi 241 du compartiment munie des premières traversées 242, 243 est sensiblement parallèle aux faces latérales 205, 206 du boitier 203. De cette façon, les conducteurs de liaison 244, 245 et leurs traversées correspondantes 242, 243 sont localisés dans une zone de la partie disjoncteur proche des bornes de raccordement ou, en d'autres termes, une zone éloignée et séparée des moyens de coupure. Ainsi, par rapport à un disjoncteur qui aurait la même configuration que la partie disjoncteur du dispositif à protection différentielle de la
Selon un autre aspect de l'invention, les conducteurs de liaison passent également par au moins une seconde traversée 251 disposée sur la cloison 213 séparant la partie à protection différentielle 211 de la partie disjoncteur 212. En l'occurrence, la seconde traversée 251 est disposée sur la seconde partie 215 définie précédemment de ladite cloison 213. De cette façon, les conducteurs de liaison ne viennent pas entraver le positionnement d'un peigne de raccordement, et plus particulièrement le logement des dents d'un tel peigne en vis-à-vis avec la première face latérale dans la partie disjoncteur. Afin de favoriser le positionnement d'un peigne de raccordement sans avoir à casser des dents de ce peigne, la partie disjoncteur 211 et la partie à protection différentielle 212 comportent, en outre, des évidements 261, 262 sur les faces latérales ne comportant pas de bornes. Ainsi, les bornes d'entrée et de sortie disposées sur les faces latérales, ainsi que les évidements 261, 262 de chaque partie du dispositif sont, sur chaque face latérale, espacés entre eux par une même distance. Les bornes peuvent ainsi être raccordées électriquement par l'entremise d'un peigne de raccordement. Les dents du peigne qui ne sont pas raccordées électriquement peuvent néanmoins être logés dans les évidements de ces faces latérales.According to another aspect of the invention, the connecting conductors also pass through at least a
Le dispositif représenté sur la
Le dispositif à protection différentielle 301 représenté sur les
Les moyens de coupure de la partie disjoncteur sont logés dans un compartiment présentant une paroi 331 munie de premières traversées 332, 333. Ces premières traversées permettent le passage des conducteurs de liaison passant du compartiment de la partie disjoncteur à la partie à protection différentielle. Chaque conducteur de liaison comporte une portion à section rectangulaire 335, 336 traversant la paroi 331 à travers les premières traversées 332, 333. Chaque conducteur de liaison comporte, en outre, une portion à section circulaire 337, 338 connectée à chacune des portions à section rectangulaire par soudure ou tout autre moyen de connexion. Les conducteurs de liaison 335, 336, 337, 338 permettent de connecter les circuits de phase et de neutre de la partie disjoncteur à une extrémité d'un des enroulements primaires de chacun desdits circuits. Les autres extrémités de chacun des enroulements primaires sont quant à elles connectées aux bornes de sortie 311,312.The breaking means of the circuit breaker part are housed in a compartment having a
Comme cela est montré sur les
Comme cela est montré sur les
Comme cela est visible sur les
Dans les dispositifs à protection différentielle de l'invention décrits précédemment, les bornes d'entrée et de sortie autorisent un raccordement électrique par l'entremise de peignes de raccordement. Cependant, il n'est pas exclu que le dispositif à protection différentielle puissent être raccordé électriquement par tout autre moyen connu de l'homme du métier tel que, par exemple, des conducteurs filaires.In the differential protection devices of the invention described above, the input and output terminals allow electrical connection via connection combs. However, it is not excluded that the differential protection device can be electrically connected by any other means known to those skilled in the art such as, for example, wire conductors.
Claims (12)
- A modular electrical differential protection device comprising:- a phase circuit (201) and a neutral circuit (202) which each extend between an input terminal (207, 208) and an output terminal (209, 210 ; 311, 312), said terminals enabling electrical connection by means of a connecting comb,- a case (203) comprising two main panels (204; 302), and a first and second side panel (205, 206 ; 303, 304) on which the input and output terminals are arranged,- a circuit breaker part (211) comprising a trip mechanism (231, 232), a switch (233, 234) fitted on each circuit, an arc extinguishing chamber, and a compartment (235) containing at least the switch and the arc extinguishing chamber, said compartment presenting a wall (241 ; 331) provided with at least one first bushing (242, 243 ; 332, 333),- a differential protection part (212) comprising a differential transformer (221) equipped with primary windings (222, 223), said differential protection part being separated from the circuit breaker part by a partition (213 ; 351) substantially parallel to the main panels, and- connecting conductors (244, 245 ; 335, 336, 337, 338) enabling the primary windings to be connected to the phase circuit and to the neutral circuit, said connecting conductors running from the compartment of the circuit breaker part to the differential protection part through the at least one first bushing,characterized in that the wall (241 ; 331) of the compartment (235) provided with the at least one first bushing is substantially parallel to the side panels (205, 206 ; 303, 304) of the case, and
in that the connecting conductors (244, 245 ; 335, 336, 337, 338) also pass via at least one second bushing (251) arranged on the partition (213 ; 351) separating the differential protection part from the circuit breaker part. - The device according to claim 1, characterized in that the partition (213, 351) comprises a first part (214) separating the differential protection part from the compartment of the circuit breaker part and a second part (215) separating the differential protection part from a connection area (216 ; 352), the at least one second bushing being arranged on the second part of said partition.
- The device according to one of claims 1 or 2, characterized in that the compartment (235) of the circuit breaker part comprises a recess of the wall provided with the at least one first bushing with respect to the first side panel of the case (205), so as to enable the teeth of the connecting comb to be housed facing said first side panel for connection.
- The device according to claim 3, characterized in that the recess is partitioned.
- The device according to one of claims 3 or 4, characterized in that the output terminals (209, 210 ; 311, 312) are arranged on the first side panel (205 ; 303).
- The device according to claim 5, characterized in that the output terminals (209, 210 ; 311, 312) are arranged on the first side panel (205, 303) of the differential protection part (212).
- The device according to claim 5, characterized in that a first output terminal (210) of the circuit breaker is arranged on the first side panel (205) in the circuit breaker part (211) and a second output terminal (209) is arranged on the first side panel (205) in the differential protection part (212).
- The device according to one of claims 5 to 7, characterized in that each output terminal (311, 312) comprises a stationary contact part (315, 316) against which an electrical conductor or a tooth of the comb is clamped, when connection is performed, by means of a movable contact part (313, 314) commanded by rotation of a clamping screw (317, 318).
- The device according to claim 8, characterized in that a part of the connecting conductors (337, 338) is housed in the differential protection part in a space delineated by the partition (351), the clamping screw (318) and the movable contact part (314) of the output terminal (312) closest to the partition (351).
- The device according to one of claims 2 to 9, characterized in that a part of the connecting conductors (335, 336, 337, 338) is housed in a connection zone (352) arranged in the recess of the compartment of the circuit breaker part.
- The device according to one of claims 1 to 10, characterized in that a connection between the connecting conductors (335, 336, 337, 338) is made by electrical soldering.
- The device according to one of claims 1 to 10, characterized in that a connection between the connecting conductors (335, 336, 337, 338) is made by flexible electrical contact.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0706344A FR2920911B1 (en) | 2007-09-11 | 2007-09-11 | ELECTRICAL DEVICE WITH DIFFERENTIAL PROTECTION |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2037477A1 EP2037477A1 (en) | 2009-03-18 |
EP2037477B1 true EP2037477B1 (en) | 2012-12-12 |
Family
ID=39148416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08354048A Active EP2037477B1 (en) | 2007-09-11 | 2008-07-01 | Electric device with differential protection |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2037477B1 (en) |
CN (1) | CN101388309B (en) |
BR (1) | BRPI0804085B1 (en) |
EG (1) | EG24765A (en) |
ES (1) | ES2398991T3 (en) |
FR (1) | FR2920911B1 (en) |
UA (1) | UA97636C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102884603B (en) * | 2010-04-14 | 2015-04-01 | ABBSpA公司 | Residual current protection device |
ITBG20100062A1 (en) * | 2010-11-17 | 2012-05-18 | Abb Spa | ELECTRIC SWITCHING DEVICE. |
FR2969369A1 (en) * | 2010-12-20 | 2012-06-22 | Schneider Electric Ind Sas | ELECTRICAL PROTECTION APPARATUS COMPRISING THE DIFFERENTIAL PROTECTION FUNCTION |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2512582A1 (en) | 1981-09-10 | 1983-03-11 | Merlin Gerin | Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay |
AT384907B (en) * | 1985-12-02 | 1988-01-25 | Felten & Guilleaume Ag Oester | Fault current circuit breaker and circuit breaker (residual current device) |
FR2715767B1 (en) | 1994-02-02 | 1996-04-26 | Legrand Sa | Unipolar and neutral differential circuit breaker. |
FR2725071B1 (en) * | 1994-09-28 | 1996-12-13 | Schneider Electric Sa | DIFFERENTIAL SWITCH ASSOCIATED WITH ONE OR MORE CIRCUIT PROTECTIVE ELEMENTS SUCH AS FUSE OR CIRCUIT BREAKERS |
GB2295275B (en) * | 1994-11-15 | 1998-08-12 | Matsushita Electric Works Ltd | Circuit breaker |
-
2007
- 2007-09-11 FR FR0706344A patent/FR2920911B1/en not_active Expired - Fee Related
-
2008
- 2008-07-01 ES ES08354048T patent/ES2398991T3/en active Active
- 2008-07-01 EP EP08354048A patent/EP2037477B1/en active Active
- 2008-09-10 BR BRPI0804085-0A patent/BRPI0804085B1/en active IP Right Grant
- 2008-09-10 EG EG2008091517A patent/EG24765A/en active
- 2008-09-10 UA UAA200811049A patent/UA97636C2/en unknown
- 2008-09-11 CN CN2008102153858A patent/CN101388309B/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR2920911B1 (en) | 2010-02-19 |
EG24765A (en) | 2010-08-03 |
CN101388309B (en) | 2013-01-16 |
BRPI0804085B1 (en) | 2020-09-29 |
FR2920911A1 (en) | 2009-03-13 |
CN101388309A (en) | 2009-03-18 |
ES2398991T3 (en) | 2013-03-25 |
UA97636C2 (en) | 2012-03-12 |
BRPI0804085A2 (en) | 2009-05-05 |
EP2037477A1 (en) | 2009-03-18 |
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