EP2889893A1 - Elektrogerät in Modulformat - Google Patents

Elektrogerät in Modulformat Download PDF

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Publication number
EP2889893A1
EP2889893A1 EP14195789.4A EP14195789A EP2889893A1 EP 2889893 A1 EP2889893 A1 EP 2889893A1 EP 14195789 A EP14195789 A EP 14195789A EP 2889893 A1 EP2889893 A1 EP 2889893A1
Authority
EP
European Patent Office
Prior art keywords
terminal
electrical
transformer
terminals
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14195789.4A
Other languages
English (en)
French (fr)
Other versions
EP2889893B1 (de
Inventor
Guy Cottone
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
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 Legrand SNC, Legrand France SA filed Critical Legrand SNC
Publication of EP2889893A1 publication Critical patent/EP2889893A1/de
Application granted granted Critical
Publication of EP2889893B1 publication Critical patent/EP2889893B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H83/223—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 bimetal elements

Definitions

  • the modular devices are provided to belong to a row where they are arranged side by side being fixed by the rear on a support rail disposed horizontally.
  • electrical devices in the modular format which are bipolar comprise an upper part and a lower part each provided with two connection terminals, respectively a first terminal for a first electrical pole and a second terminal for a second electrical pole different from the first pole. electric.
  • connection terminal is configured to receive a stripped end portion of an electrical cable or a tooth of a horizontal distribution comb.
  • the lateral face of the upper part (upper face) and the lateral face of the lower part (lower face) generally have each two introduction ports giving access respectively to the first terminal and the second terminal.
  • the modular electrical device When the modular electrical device has to fulfill several functions simultaneously, for example both a short-circuit and over-current protection circuit-breaker function and a differential protection function, the number of components to be arranged inside the circuit breaker.
  • the apparatus is relatively high and the apparatus can therefore become relatively bulky, i.e., have a width of a high number of modules.
  • the invention aims to provide a similar modular format electrical apparatus but simpler, more convenient and more economical.
  • the invention proposes an electrical apparatus of modular format, generally parallelepipedal in shape with two main faces and side faces extending from one to the other of the main faces, and with a width, that is, that is to say the difference between the two main faces, equal to an integer number of times a predetermined distance, called module, the upper part and the lower part of said apparatus each having two connection terminals, respectively a first terminal for a first pole an electrical terminal and a second terminal for a second electrical pole different from the first electrical pole, each said connection terminal being configured to receive a stripped end section of an electric cable or a tooth of a horizontal distribution comb, said lateral face of the upper part or said lateral face of the lower part each having two introduction orifices giving accessing respectively the first terminal and the second terminal;
  • which electrical apparatus is characterized in that at least a portion of an annular armature of an electrical transformer is located in the existing space, in a left-right direction, between said first terminal and said second terminal of one said lower part and upper part of the apparatus, hereinafter
  • the connecting part of the apparatus according to the invention is not occupied exclusively by the first terminal and by the second terminal, but also comprises at least a portion of the armature or annular magnetic circuit of the electrical transformer.
  • connection part hitherto entirely reserved for the first terminal and the second terminal certainly implies some constraints on the location and arrangement of the first terminal and the second terminal. terminal, but allows to free up space in other areas of the device.
  • the electrical apparatus according to the invention can comprise other relatively bulky components.
  • the electrical apparatus according to the invention is thus particularly simple, convenient and economical
  • the electrical apparatus 10 shown in the drawings is a bipolar differential circuit breaker with two protected poles, that is to say having a current path circuit for each pole, operating a short circuit and overcurrent detection (circuit breaker function). ) in each of the two path circuits (two protected poles) and operating a difference in intensity difference detection of the current flowing in one and the other of the routing circuits (differential function).
  • the electrical apparatus 10 has in its upper part two connection terminals 11 and in its lower part two connection terminals 12.
  • connection terminals 11 and 12 are provided to receive a stripped end section of an electrical cable or a tooth of a horizontal distribution comb of electricity.
  • Terminal 11 (upper part) on the left and terminal 12 (lower part) on the left are provided for one of the poles of the electrical installation, usually one of the phases, while the other terminals 11 and 12 (on the right) are provided for the other pole of the electrical installation, usually another phase.
  • the current path circuit between the terminals 11 and 12 on the left comprises in series a magnetic tripping member 13, a fixed contact 14, a movable contact 15, a thermal tripping member 16 and a winding 17 forming part of a transformer 18 differential fault detection.
  • connection terminals 11 and 12 on the right are identical.
  • the transformer 18 further comprises the winding 17 of the path circuit between the terminals 11 and 12 on the left and the winding 17 of the path circuit between the terminals 11 and 12 on the right, which form the primary windings. a secondary winding 19, and an armature (magnetic circuit) around which the primary windings 17 and the secondary winding 19 are made.
  • the armature 20 is annular and comprises at least a portion located in the existing space, in a left-right direction, between the two terminals 12 of the lower part.
  • the secondary winding 19 of the transformer 18 is connected by two electrical conductors to a sensitive relay 21.
  • the apparatus 10 comprises a mechanism 22, generally called a lock.
  • a lever 23 located outside the apparatus 10 makes it possible to act manually on the lock 22.
  • the two magnetic tripping members 13, the two thermal tripping members 16 and the sensitive relay 21 are configured to act on the lock 22 if necessary.
  • the lock 22 is configured to have two stable positions, respectively a cutting position where the two movable contacts 15 are each away from the corresponding fixed contact 14, and a position engagement wherein each of the two movable contacts 15 bears on the corresponding fixed contact 14.
  • the lever 23 makes it possible to act manually on the lock 22 to move from the cutting position to the latching position or vice versa.
  • Each of the two magnetic tripping members 13, each of the two thermal tripping members 16 and the sensitive relay 21 are configured to act on the lock 22 to move from the latching position to the disconnecting position when necessary.
  • the magnetic tripping members 13 act on the lock in the event of a short circuit, the thermal tripping members 16 act in the event of an overcurrent and the sensitive relay 21 acts in the event of a differential defect.
  • each magnetic tripping member 13 is formed by a coil disposed around a movable core controlling a striker acting on the lock 22 if necessary.
  • Each thermal tripping member 16 is formed by a bimetallic strip deforming in the event of prolonged overcurrent. and acting due to its deformation on the lock 22.
  • the sensitive relay 21 is supplied by the secondary winding 19 of the transformer 18 in case of difference between the current flowing in one of the windings 17 and the intensity flowing in the other winding 17, that is to say in case of differential defect. When the relay 21 is thus powered, it drives a finger that comes into contact with the lock 22 to trigger the transition from the latching position to the cutting position.
  • the lock 22 is subdivided into three subassemblies, respectively two subassemblies 25 each to cooperate with one of the movable contacts 15 and a subassembly 26 to cooperate with the sensitive relay 21.
  • the subassembly 26 is disposed in a left-right direction between the two subassemblies 25.
  • each of the two current path circuits between a terminal 11 and a terminal 12 has an arc extinction chamber 27 (not shown in FIG. figure 1 ) associated with the fixed contact 14 and the corresponding movable contact 15.
  • the electrical apparatus 10 has a generally parallelepipedic shape.
  • main faces 30 and side faces extending from one to the other of the main faces 30, namely a rear face 31, a lower face 32, a front face 33 and an upper face 34.
  • the rear face 31 has a notch 35 for mounting the device 1 on a standard support rail with ⁇ profile, (not shown).
  • the front face 33 has, in the central position, about half of its length, a nose 36 presenting the handle 23.
  • the apparatus 10 is of the modular type, that is to say that in addition to its generally parallelepipedal shape, its width (distance between the two main faces 30) is a multiple of a normalized value, known as of "module", which is of the order of 18 mm.
  • the apparatus 10 has a width of two modules.
  • At least a part, here the lower half, of the annular armature 20 of the transformer 18 is located in the existing space, in a left-right direction, between the two terminals 12 of the lower part of the device 10.
  • each terminal 11 In the space under each terminal 11 are disposed an arc extinguishing chamber 27 and a magnetic tripping member 13, with on each side the arc extinguishing chamber 27 which is behind the organ magnetic trip 13.
  • the magnetic tripping members 13 are narrower than the arc extinguishing chambers 27 and are each located near one of the main faces 30.
  • the sensitive relay 21 is located in the existing space, in a left-right direction, between the two magnetic tripping members 13 and in front of the arc extinguishing chambers 27.
  • the arc extinction chambers 27, the magnetic tripping members 13 and the sensitive relay 21 are arranged in the same stage.
  • the lock 22 is disposed under this stage with each subassembly 25 which is arranged under an arc extinguishing chamber 27 and the subassembly 26 which is arranged under the sensitive relay 21.
  • Each of the thermal tripping members 16 is disposed above one of the two terminals 12 and below the lock 22, and more precisely below one of the subassemblies 25 of the lock 22.
  • thermal tripping members 16 are elongated and inclined downwardly and rearwardly.
  • Each of the thermal tripping members 16 is near a main face 30.
  • the upper face 34 has two insertion orifices 37 each giving access to one of the terminals 11.
  • Each terminal 11 (see figure 5 ) has a contact area 40 which is fixed and a cage 41 which is movable under the effect of the screw.
  • the bare end section or the tooth of the comb to be connected is introduced into the housing delimited by the contact area 40 and the cage 41 and the screw 39 is operated to hang the wall of the cage 41 opposite the range 40 to clamp the bare end portion or the tooth.
  • the distance between the two orifices 37 of the upper face 34 is of the order of one module and that the housing of the terminals 11 delimited by the contact area 40 and by the range 41 is sized to accommodate the conductive core (denuded end section) of a very large section cable or two cables of large section or a comb tooth and the conductive core of a large section cable.
  • the lower face 32 has two insertion orifices 42 each giving access to one of the terminals 12. Below the nose 36, there are two orifices 43 each giving access to the screw 44 of one of the terminals 12.
  • each terminal 12 is arranged in a similar manner to the terminals 11, that is to say that each terminal 12 comprises (see FIG. figure 8 ) a contact area 45 which is fixed and a cage 46 which is movable under the effect of the screw 44; and the stripped end section of an electric cable or the comb tooth to be connected is introduced into the housing delimited by the contact pad 45 and the cage 46 and the screw 44 is operated to bring the wall of the cage 46 closer together facing the beach 45 to clamp the bare end portion or the tooth.
  • the difference between the two insertion orifices 42 of the lower face 32 is of the order of one and a half module and that the housing delimited by the contact pad 45 and by the cage 46 is sized to welcome the soul conductive (bare end section) of a cable of large section, but less than the housing of terminals 12.
  • the terminals 11 are sized to each accommodate a cable whose conductive core has a section such that it could carry a current of 63 A, while the terminals 12 are sized to each accommodate a cable having a section such that it could carry a current of 40 A.
  • terminals 12 are smaller than the terminals 11 and are further apart from each other is of course due to the presence of the armature 20 of the transformer 18 between the terminals 12.
  • the lower capacity of the terminals 12 is in practice not a problem since the terminals 12 remain sufficiently large to accommodate a cable having the nominal intensity of the electrical apparatus 10 (here 40 A).
  • the largest spacing between the terminals 12 does not allow the use of a conventional horizontal distribution comb, whose pitch between two successive teeth is of a module, but in practice it is especially the terminals of the upper part (here terminals 11) which are likely to cooperate with a horizontal distribution comb since in principle in some countries such as France, it is the input terminals which are located in the upper part.
  • the annular armature 20 of the transformer 18 has an axial orientation in a rear-front direction of the apparatus 10.
  • the armature 20 has a relatively large axial extension.
  • winding 17 on the left and the winding 17 on the right are implemented by a relatively large section conductor whose upper end is connected (here by welding) to the corresponding thermal trip member 16 and whose lower end is connected (here by welding) to the corresponding terminal 12 (see more particularly the figure 7 ).
  • the arrangement of the transformer 18 with, on each of the left and right sides, a terminal 12 and a thermal tripping member 16 is thus particularly convenient.
  • the transformer 18 is relatively remote from the arc extinction chambers 27. As a result, the transformer 18 introduces no or very few magnetic disturbances impeding the operation of the arc extinguishing chambers 27.
  • the transformer such as 18 is arranged not between the terminals 12 of the lower part, but between the terminals 11 of the upper part.
  • the electrical apparatus is of a different nature, for example a differential switch with thermal tripping members.
  • the transformer as configured to feed alone (without the energy of the electrical network) a sensitive relay such as 21 is replaced by a transformer of another nature, for example a transformer to provide a differential fault information to a relay powered by the electrical network or a transformer forming part of a sensor to provide a signal representative of the intensity flowing in the apparatus 10.
  • the arrangement of the components other than the electrical transformer such as 18, is different, with for example the magnetic tripping members such as 13 which are behind arc extinguishing chambers such as 27; and / or in each tracking circuit, the magnetic tripping member such as 13 and the magnetic tripping member such as 16 are replaced by a magneto-thermal tripping member.
  • the electrical apparatus has a different width and / or a number of different poles, for example a four-pole four-width device comprising four terminals at the top and four terminals at the bottom, with the armature such as 20 disposed between two terminals.
  • connection terminals 11 and 12 are shaped differently, for example with a spring for clamping the bare end section of an electric cable or the tooth of a horizontal distribution comb.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Transformers For Measuring Instruments (AREA)
EP14195789.4A 2013-12-27 2014-12-02 Elektrogerät in Modulformat Active EP2889893B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1363648A FR3016078A1 (fr) 2013-12-27 2013-12-27 Appareil electrique au format modulaire

Publications (2)

Publication Number Publication Date
EP2889893A1 true EP2889893A1 (de) 2015-07-01
EP2889893B1 EP2889893B1 (de) 2018-04-04

Family

ID=50483070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14195789.4A Active EP2889893B1 (de) 2013-12-27 2014-12-02 Elektrogerät in Modulformat

Country Status (5)

Country Link
EP (1) EP2889893B1 (de)
CN (1) CN104752112B (de)
DK (1) DK2889893T3 (de)
ES (1) ES2674136T3 (de)
FR (1) FR3016078A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089707A4 (de) * 2021-03-31 2022-11-16 Etman Electric (Changzhou) Co., Ltd. 2p2-analog-digital-schutzschalter gegen elektromagnetische leckage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017818A1 (de) * 1979-04-12 1980-10-29 Siemens Aktiengesellschaft Fehlerstromschutzschalter mit eine Prüftaste enthaltenden Prüfeinrichtung
EP0325071A1 (de) * 1988-01-20 1989-07-26 Hager Electro S.A. Schutzgerät für elektrische Anlagen
FR2686453A1 (fr) * 1992-01-17 1993-07-23 Legrand Sa Interrupteur differentiel.
FR2731837A1 (fr) 1995-03-16 1996-09-20 Legrand Sa Disjoncteur differentiel unipolaire et neutre
WO1998002896A1 (en) 1996-07-15 1998-01-22 Gewiss S.P.A. Modular automatic electric breaker with optimization of used spaces
WO1998053473A1 (en) 1997-05-20 1998-11-26 Gewiss S.P.A. Kinematic system for actuating the movable contact of automatic electric breakers
EP0948021A1 (de) * 1998-04-03 1999-10-06 Legrand Multipoläre differenzial Schalter
EP1254475A1 (de) 2000-02-11 2002-11-06 Bticino S.P.A. Automatischer schalter mit betätigbarem eletromagnet und kurzschluss-schalter
WO2009071552A1 (en) 2007-12-04 2009-06-11 Abb S.P.A. Automatic switch for low voltage application
WO2012119555A1 (zh) * 2011-03-09 2012-09-13 上海电科电器科技有限公司 优化空间分配的断路器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102683130B (zh) * 2011-03-09 2016-03-23 上海电科电器科技有限公司 优化空间分配的断路器

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017818A1 (de) * 1979-04-12 1980-10-29 Siemens Aktiengesellschaft Fehlerstromschutzschalter mit eine Prüftaste enthaltenden Prüfeinrichtung
EP0325071A1 (de) * 1988-01-20 1989-07-26 Hager Electro S.A. Schutzgerät für elektrische Anlagen
FR2686453A1 (fr) * 1992-01-17 1993-07-23 Legrand Sa Interrupteur differentiel.
FR2731837A1 (fr) 1995-03-16 1996-09-20 Legrand Sa Disjoncteur differentiel unipolaire et neutre
WO1998002896A1 (en) 1996-07-15 1998-01-22 Gewiss S.P.A. Modular automatic electric breaker with optimization of used spaces
WO1998053473A1 (en) 1997-05-20 1998-11-26 Gewiss S.P.A. Kinematic system for actuating the movable contact of automatic electric breakers
EP0948021A1 (de) * 1998-04-03 1999-10-06 Legrand Multipoläre differenzial Schalter
FR2777110A1 (fr) 1998-04-03 1999-10-08 Legrand Sa Disjoncteur differentiel multipolaire
EP1254475A1 (de) 2000-02-11 2002-11-06 Bticino S.P.A. Automatischer schalter mit betätigbarem eletromagnet und kurzschluss-schalter
WO2009071552A1 (en) 2007-12-04 2009-06-11 Abb S.P.A. Automatic switch for low voltage application
WO2012119555A1 (zh) * 2011-03-09 2012-09-13 上海电科电器科技有限公司 优化空间分配的断路器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089707A4 (de) * 2021-03-31 2022-11-16 Etman Electric (Changzhou) Co., Ltd. 2p2-analog-digital-schutzschalter gegen elektromagnetische leckage

Also Published As

Publication number Publication date
DK2889893T3 (en) 2018-07-16
FR3016078A1 (fr) 2015-07-03
EP2889893B1 (de) 2018-04-04
CN104752112A (zh) 2015-07-01
CN104752112B (zh) 2018-08-03
ES2674136T3 (es) 2018-06-27

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