EP3648134B1 - Dispositif d'interconnexion d'appareils de coupure d'un courant électrique - Google Patents

Dispositif d'interconnexion d'appareils de coupure d'un courant électrique Download PDF

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Publication number
EP3648134B1
EP3648134B1 EP19206260.2A EP19206260A EP3648134B1 EP 3648134 B1 EP3648134 B1 EP 3648134B1 EP 19206260 A EP19206260 A EP 19206260A EP 3648134 B1 EP3648134 B1 EP 3648134B1
Authority
EP
European Patent Office
Prior art keywords
terminals
contacts
electrical
electrical contacts
control signal
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.)
Active
Application number
EP19206260.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3648134A1 (fr
Inventor
David Couzon
Joël Reboulet
Philippe DEBEAUX
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3648134A1 publication Critical patent/EP3648134A1/fr
Application granted granted Critical
Publication of EP3648134B1 publication Critical patent/EP3648134B1/fr
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
    • 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
    • H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
    • 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
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • 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
    • H01H71/082—Connections between juxtaposed circuit breakers

Definitions

  • the invention relates to a device for interconnecting devices for cutting an electric current.
  • the invention also relates to an electrical system comprising such an interconnection device.
  • Switching devices such as contactors or relays, make it possible to selectively interrupt the flow of a direct electric current.
  • breaking devices include electrical contacts, or switches, switchable between an open state and a closed state under the action of an electromagnetic actuator integrated in the breaking device. Switching between the open state and the closed state is achieved by controlling the actuator with a control signal.
  • breaking devices generally have a maximum current and / or voltage rating. It sometimes happens that a user is obliged to have recourse to a cutting device having a considerably oversized caliber compared to the intended use when no other suitable cutting device exists on the market.
  • the interconnection device is pre-assembled and comprises a support on which are mounted the first terminals, the second terminals, the third terminals and the fourth terminals, the input terminal, the output terminal and the control terminals and in which are integrated the first and second electrical circuits.
  • the interconnection device makes it possible to combine in a modular fashion two or more switching devices to form an electrical system capable of interrupting a direct current whose intensity and / or voltage are greater than the rating of each of said switching devices taken. individually.
  • interconnection device is connected to the first and second breaking devices, the first terminals being connected to the first contacts, the second terminals being connected to the second contacts, the third terminals being connected to the first actuator, the fourth terminals being connected to the second actuator.
  • the figure 1 shows an electrical system 2 comprising a set 4 of cut-off devices for an electrical current and an interconnection device 6.
  • the assembly 4 comprises a first breaking device C1 and a second breaking device C2.
  • the number of switching devices may be greater than two.
  • Each of the devices C1 and C2 is here capable of interrupting a direct electric current.
  • devices C1 and C2 are contactors or relays.
  • Each device C1 and C2 comprises electrical contacts, or switches, reversibly switchable between an open state and a closed state to, respectively, prevent or allow the flow of an electric current.
  • Each device C1 and C2 also includes an actuator, in particular an electromagnetic actuator, configured to switch the electrical contacts between the open state and the closed state in response to a control signal.
  • an actuator in particular an electromagnetic actuator, configured to switch the electrical contacts between the open state and the closed state in response to a control signal.
  • control signal is an electrical voltage supplied to terminals of a coil of the actuator.
  • the switching of all the contacts is for example carried out simultaneously by the actuator.
  • each device C1 and C2 comprises a housing, generally of molded plastic, and electrical connectors, generally installed on one face of the housing.
  • the electrical connectors are connected to the electrical contacts and to the actuator and allow them to be connected to an electrical installation.
  • the device C1 comprises three first electrical contacts 40, 42 and 44.
  • the device C2 comprises eight second electrical contacts 50, 52, 54, 56, 58, 60, 62 and 64.
  • the number of contacts of each device C1, C2 can be different.
  • the number of contacts of the device C1 is greater than or equal to one or two and less than or equal to five or ten.
  • the number of contacts of the device C2 is for example greater than or equal to three or to five and less than or equal to ten or twenty.
  • the contacts 40, 42 and 44 of the device C1 and the contacts 50, 52, 54, 56, 58, 60, 62 and 64 of the device C2 are normally open contacts, c 'that is, they remain in the open state as long as no control signal is applied to the actuator.
  • the first contacts 40, 42 and 44 of the device C1 are all simultaneously in the same open or closed state and the second contacts 50, 52, 54, 56, 58, 60, 62 and 64 of the device C2 are all simultaneously in the same open or closed state.
  • the device 6 comprises an input terminal 10, an output terminal 12 and control terminals 14 and 16.
  • Terminals 10 and 12 are used to connect system 2 to an electrical installation.
  • an electric load 30 is connected between the output terminal 12 and another terminal 32 of an electrical installation.
  • the device 6 is here intended to be connected to the devices C1 and C2 so that the system 2 is able to cut an electric current flowing between the input 10 and output terminals 12.
  • the device 6 is removable and can be reversibly connected to devices C1 and C2.
  • the control terminals 14 and 16 are able to receive a control signal, in particular a control signal similar to the control signal used to control one of the actuators of the devices C1 and C2.
  • the device 6 further comprises first terminals L1 / C1, T1 / C1, L2 / C1, T2 / C1, L3 / C1 and T3 / C1, second terminals L1 / C2, T1 / C2, L2 / C2, T2 / C2, L3 / C2, T3 / C2, 13NO / C2, 14NO / C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO, 83NO and 84NO, third terminals A1 / C1 and A2 / C1 and fourth terminals A1 / C2 and A2 / C2.
  • each terminal comprises a blade or a pad made of electrically conductive material suitable for being connected to a corresponding connector of the device C1 or C2.
  • the first terminals L1 / C1, T1 / C1, L2 / C1, T2 / C1, L3 / C1 and T3 / C1 are electrically connected to the first electrical contacts 40, 42, 44.
  • first terminals are grouped here in pairs, each connected to one of the first electrical contacts.
  • terminals L1 / C1, T1 / C1 are connected respectively to opposite terminals of contact 40.
  • Terminals L2 / C1, T2 / C1 are respectively connected to opposite terminals of contact 42.
  • Terminals L3 / C1, T3 / C1 are connected respectively to the opposite terminals of contact 44.
  • the second terminals L1 / C2, T1 / C2, L2 / C2, T2 / C2, L3 / C2, T3 / C2, 13NO / C2, 14NO / C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO , 83NO and 84NO, are electrically connected respectively to the second electrical contacts 50, 52, 54, 56, 58, 60, 62, 64.
  • the second terminals are here grouped in pairs, each connected to one of the second electrical contacts.
  • the terminals L1 / C2, T1 / C2 are respectively connected to the opposite terminals of the contact 50.
  • the terminals 83NO, 84NO are respectively connected to the opposite terminals of the contact 64. And so on.
  • the third terminals A1 / C1 and A2 / C1 are electrically connected to the actuator of the first device C1.
  • the fourth terminals A1 / C2 and A2 / C2 are electrically connected to the actuator of the second device C2.
  • the device 6 is pre-assembled and comprises a support 18 on which are mounted the terminals 10, 12, 14 and 16, the first terminals L1 / C1, T1 / C1, L2 / C1, T2 / C1, L3 / C1 and T3 / C1, the second terminals L1 / C2, T1 / C2, L2 / C2, T2 / C2, L3 / C2, T3 / C2, 13NO / C2, 14NO / C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO , 83NO and 84NO, the third terminals A1 / C1 and A2 / C1 and the fourth terminals A1 / C2 and A2 / C2.
  • the support 18 is made of plastic, preferably molded plastic. According to examples, the support 18 forms a rigid or at least partially rigid frame.
  • the support 18 may optionally include one or more connecting portions 20 visible from the outside of the support 18 and which connect portions of the support 18, in particular in the case where the rigid portions of the support 18 supporting the terminals are not formed of in one piece.
  • the device 6 is shaped so as to be mounted on the face of the devices C1 and C2, so that the terminals of the device 6 are inserted into the corresponding connectors of the devices C1 and C2 when the device 6 is connected.
  • the devices C1 and C2 are aligned and arranged side by side, for example fixed in the same electrical panel.
  • the arrangement and the shape of the device 6 are dependent on the shape of the devices C1 and C2 and are therefore adapted according to the type of switching device to which the device 6 is intended to be connected.
  • connection zones are distributed among several connection zones, here bearing the references 22, 24 and 26.
  • the shape and dimensions of the connection zones are complementary to the arrangement of the connectors of the devices C1 and C2.
  • the terminals of the device 6 are arranged along parallel rows, one of the terminals of each pair of terminals being placed on an upper row and the other terminal of this pair being placed on a lower row.
  • terminals L1 / C1, L2 / C1, L3 / C1, L1 / C2, L2 / C2, L3 / C2, 13NO / C2, 53NO, 63NO, 73NO, 83NO, A1 / C1 and A1 / C2 are placed on a top row and the terminals T1 / C1, T2 / C1, T3 / C1, T1 / C2, T2 / C2, T3 / C2, 14NO / C2, 54NO, 64NO, 74NO, 84NO, A2 / C1 and A2 / C2 are placed on a lower row.
  • the support 18 comprises fixing elements allowing the support 18 to be fixed reversibly on the respective housings of the devices C1 and C2.
  • the fasteners may include hooks, or screws, or bolts, or snap-fastening devices, or form-complementary fasteners, or any other equivalent fastening device.
  • the device 6 comprises a first electrical circuit which connects the input 10 and output 12 terminals to the first terminals L1 / C1, T1 / C1, L2 / C1, T2 / C1, L3 / C1 and T3 / C1 and to the second terminals L1 / C2, T1 / C2, L2 / C2, T2 / C2, L3 / C2, T3 / C2, 13NO / C2, 14NO / C2, 53NO, 54NO, 63NO, 64NO, 73NO, 74NO, 83NO, to electrically connect the first contacts 40, 42, 44 and second contacts 50, 52, 54, 56, 58, 60, 62 and 64 of devices C1, C2 between input 10 and output 12 terminals.
  • the first electrical circuit is configured to electrically connect the first contacts 40, 42, 44 in parallel between the input and output terminals 10, 12.
  • the first electrical circuit is further configured to connect electrically the second contacts 50, 52, 54, 56, 58, 60, 62 and 64 in series with each other and in parallel with the first contacts 40, 42, 44 between the input and output terminals 10, 12.
  • the first circuit comprises electrical conductors integrated into the support 18.
  • the electrical conductors of the first circuit are identified by hatched areas.
  • the electrical conductors are metal bars or cables and are fixed to the support 18 or integrated into the support 18, for example by overmolding.
  • the electrical conductors are electrically conductive tracks deposited on an insulating substrate, for example on an insulating resin plate, this insulating substrate being fixed on or integrated into the support 18.
  • the support 18 comprises plates 70, 72, 74, 76, 78 and 80 associated with the connection zones 22, 24 and 26 and on which the terminals are mounted.
  • the plates 70, 74 and 78 serve as a support for an upper row of terminals and the plates 72, 76 and 80 serve as a support for a lower row of terminals.
  • the support 18 further comprises additional plates 82, 84, 86, 88 and 90 which connect the plates 70, 72, 74, 76, 78 and 80 to each other and which here at least partly form the connectors 20.
  • the connection areas 22, 24 and 26 are shown away from each other.
  • the first circuit comprises a conductor which connects the input terminal 10 to the terminals L1 / C1, L2 / C1, L3 / C1, L1 / C2, another conductor which connects the output terminal 12 to terminals T1 / C1, T2 / C1, T3 / C1 and 83NO, and additional conductors which connect the other second terminals two by two to connect the second contacts in series as explained previously and as illustrated on the example of figure 2 .
  • the device 6 further comprises a second electrical circuit which connects the control terminals 14 and 16 to the third and fourth terminals A1 / C1, A2 / C1, A1 / C2 and A2 / C2 to distribute to the third and fourth terminals a signal of control applied between control terminals 14 and 16.
  • control signal here is an electric voltage.
  • a corresponding voltage is applied between the third terminals A1 / C1 and A2 / C1 and between the fourth terminals A1 / C2 and A2 / C2.
  • the first circuit comprises electrical conductors integrated into the support 18.
  • the electrical conductors of the second circuit are identified by dotted areas.
  • the electrical conductors of the second circuit are for example similar to the electrical conductors of the first circuit.
  • the second electrical circuit further comprises an electronic circuit 8 configured to delay, with a predefined delay time T, the transmission to the fourth terminals A1 / C2 and A2 / C2 of an electrical contact opening control signal received from control terminals 14 and 16.
  • the electronic circuit 8 is connected between the control terminals and the fourth terminals.
  • the electronic circuit 8 is mounted on the support 18, here on the plate 74.
  • the x-axis corresponds here to a time scale t, while the y-axis V corresponds to an amplitude value expressed in volts. To make it easier to read the figure 4 , a vertical offset has been applied to curve 100.
  • the order to open the contacts corresponds to a transition of the control voltage from a first amplitude value (for example equal to 5 Volts direct) to a second value of amplitude less than the first amplitude (for example a zero voltage).
  • a first amplitude value for example equal to 5 Volts direct
  • a second value of amplitude less than the first amplitude for example a zero voltage
  • the second circuit and the electronic circuit 8 are thus configured to supply the fourth terminals A1 / C2 and A2 / C2 with a delayed control signal (curve 102) in which the transition from the electric voltage to the second amplitude value is delayed with the delay time T with respect to the signal (curve 100) transmitted to the third terminals A1 / C1 and A2 / C1.
  • a delayed control signal curve 102 in which the transition from the electric voltage to the second amplitude value is delayed with the delay time T with respect to the signal (curve 100) transmitted to the third terminals A1 / C1 and A2 / C1.
  • the actuator of the first device C1 immediately ceases to be supplied.
  • the actuator of the second device C2 continues to be supplied for the duration of the delay T and ceases to be supplied at the expiration of the delay T.
  • the duration of the delay T is between 5 ms and 50 ms.
  • the electronic circuit 8 comprises one or more passive components which make it possible to delay the transmission of the opening order to the fourth terminals A1 / C1 and A2 / C1, that is to say here to maintain a voltage electrical between the fourth terminals A1 / C1 and A2 / C1 equal to the first amplitude for the duration T after the electrical voltage between the control terminals 14, 16 has been interrupted.
  • the electronic circuit 8 comprises a capacitor connected between the terminals 14, 16 and the fourth terminals, this capacitor being arranged to maintain the electric voltage equal to the first amplitude value between the fourth terminals A1 / C1 and A2 / C1 (but not between the third terminals A1 / C1 and A2 / C1) for the duration T once the voltage between the control terminals 14, 16 is interrupted.
  • the interconnection device 6 makes it possible to combine in a modular fashion two or more breaking devices C1, C2 to form an electrical system 2 capable of interrupting a direct current whose intensity and / or voltage are greater than the rating of each of said devices. cut-off C1, C2 taken individually.
  • each of the devices C1 and C2 has a voltage rating of 300V DC and a current rating of 32 Amps (A). Thanks to the device 6, the system 2 formed by the association of the devices C1 and C2 is able to interrupt a current, even when the electric voltage is greater than 300V DC, for example for voltages up to 1000 V DC and currents up to 75A.
  • device 6 Since device 6 is pre-assembled, it is easier to connect devices C1 and C2 to build system 2. The user does not need to manually wire the entire connection between devices C1 and C2, which saves time. time and limit connection errors that could occur in a manually wired installation.
  • the user can thus build a system 2 adapted to his needs from existing devices C1, C2.
  • the current breaking is easier to implement, because the more there are second contacts in series, the more the electrical voltage is reduced at each second contact. There is less chance that an electric arc will persist at a single second contact 50, 52, 54, 56, 58, 60, 62 or 64 when the power is turned off.
  • the device 6 makes it possible to construct a system 2 with a good compromise between breaking capacity and thermal dissipation.
  • the delay in opening the second contacts 50, 52, 54, 56, 58, 60, 62 and 64 makes it possible to open the first contacts 40, 42, 44 before the second contacts when an opening order is received. Indeed, as system 2 is likely to be used with currents exceeding the rating of device C1 and as the first contacts 40, 42, 44 are connected in parallel, if the second contacts 50, 52, 54, 56 , 58, 60, 62 and 64 opened before the first contacts, the first contacts 40, 42, 44 might be unable to cut the current on their own.
  • the above teachings can be transposed to a different number of breaking devices, or to breaking devices comprising a different number of contacts, or to a geometrical configuration different from that described, or even to switching devices. breaking with normally closed contacts instead of normally open contacts.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Control Of Electric Motors In General (AREA)
  • Breakers (AREA)
EP19206260.2A 2018-10-31 2019-10-30 Dispositif d'interconnexion d'appareils de coupure d'un courant électrique Active EP3648134B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860095A FR3087957B1 (fr) 2018-10-31 2018-10-31 Dispositif d'interconnexion d'appareils de coupure d'un courant electrique

Publications (2)

Publication Number Publication Date
EP3648134A1 EP3648134A1 (fr) 2020-05-06
EP3648134B1 true EP3648134B1 (fr) 2021-04-14

Family

ID=65444189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19206260.2A Active EP3648134B1 (fr) 2018-10-31 2019-10-30 Dispositif d'interconnexion d'appareils de coupure d'un courant électrique

Country Status (3)

Country Link
EP (1) EP3648134B1 (zh)
CN (1) CN111128602A (zh)
FR (1) FR3087957B1 (zh)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739192A (en) * 1971-11-24 1973-06-12 J Oswald Non oscillating arcless switching or inductive d.c. loads
DE4022893C1 (zh) * 1990-07-18 1991-08-29 Siemens Ag, 8000 Muenchen, De
ES2081243B1 (es) * 1993-01-20 1997-07-01 Vega Y Farres S A Bloque de conexion para contactores electricos.
ATE268941T1 (de) * 1995-12-12 2004-06-15 Moeller Gmbh Busfähiger verstärkerbaustein für antriebsanordnungen elektromagnetischer schaltgeräte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3648134A1 (fr) 2020-05-06
FR3087957A1 (fr) 2020-05-01
CN111128602A (zh) 2020-05-08
FR3087957B1 (fr) 2021-07-16

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