EP2936534B1 - Dispositif modulaire de commutation électrique comportant au moins un bloc de coupure unipolaire et ensemble de commutation comportant de tels dispositifs - Google Patents

Dispositif modulaire de commutation électrique comportant au moins un bloc de coupure unipolaire et ensemble de commutation comportant de tels dispositifs Download PDF

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Publication number
EP2936534B1
EP2936534B1 EP13815020.6A EP13815020A EP2936534B1 EP 2936534 B1 EP2936534 B1 EP 2936534B1 EP 13815020 A EP13815020 A EP 13815020A EP 2936534 B1 EP2936534 B1 EP 2936534B1
Authority
EP
European Patent Office
Prior art keywords
block
switching device
mobile contact
modular
mobile
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
EP13815020.6A
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German (de)
English (en)
French (fr)
Other versions
EP2936534A1 (fr
Inventor
Patrick Larcher
Didier Vigouroux
Michel Lauraire
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
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Schneider Electric Industries SAS
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Publication date
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Publication of EP2936534A1 publication Critical patent/EP2936534A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/545—Self-contained, easily replaceable microswitches
    • 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
    • H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches

Definitions

  • the invention relates to a modular electrical switching device comprising a breaking block comprising unitary breaking units respectively comprising at least one fixed contact that can collaborate with a moving contact.
  • An actuating block of the unitary breaking units comprises an electromagnetic actuator having a fixed yoke and a movable armature adapted to move relative to the fixed yoke between an open position and a closed position of the electrical contacts.
  • the modular electrical switching device further comprises means allowing the attachment of the actuating block on the breaking block.
  • the invention also relates to an electrical switching assembly comprising a first and a second modular electrical switching devices placed side by side and being electrically connected.
  • unitary breaking units in multipole protection and / or switching devices such as circuit breaker, contactor-breaker, contactor is known.
  • the unitary cutoff units can be housed in a multipolar package ( US4684772 ).
  • the multipolar devices are then modular in the sense that the same breaking block can be duplicated three times in a three-pole switching device and four times in a four-pole device.
  • some switching devices include means electronic control.
  • electronic control means generally greatly reduces the volume of the device and its consumption. It also opens the contactor to communication.
  • control means are controlled and powered by an electronic control additional problems may appear. Indeed the level and maintenance periods required by the electronic means and the electromechanical means included in the same device are not the same knowing that the overall maintenance must remain easy and low cost. This is all the more true that the lifetimes of the electronic control means and the associated electromechanics can be very different depending on the application.
  • the modularity of the switching device allows the user to obtain a product whose performance is actually adapted to the use it makes.
  • the counterpart of this modularity is the certain complexity of realization of such a multipolar switching device.
  • the complexity is real in terms of realization of the architecture and in terms of the maintenance of the switching device.
  • the modularity of the multipolar switching device can also relate to the introduction and use of an electronic thermal protection device.
  • the integration of a removable electronic thermal protection in the volume of the switching device is then possible at the cost of adaptation means having a certain complexity. This additional complexity can be increased when several switching devices are interconnected to control a motor including in particular an inverter mode.
  • the invention therefore aims to remedy the drawbacks of the state of the art, by proposing an electronically controlled electrical switching device comprising a simplified modular architecture accepting one or more breaking blocks.
  • the modular electrical switching device comprises quick fastening means allowing a removable attachment of the actuating block on the breaking block.
  • Said means comprise at least one coupling hook intended firstly to fix and hold the breaking block to the actuating block, and secondly to collaborate with a device for actuating the movable contact of a unitary block. cut-off device for transmitting the movement of the electromagnetic actuator to said moving contact.
  • Said coupling hook being secured to the movable armature of the electromagnetic actuator.
  • the device for actuating the movable contact of a unitary breaking unit comprises a movable contact holder integral with the movable contact and provided with a pin supporting an attachment head.
  • the towing hook comprises an edge having a bearing surface adapted to collaborate with the attachment head to transmit the movements of the movable armature to the movable contact from the closed position to the open position and Conversely.
  • the coupling hook comprises a first edge having a slot intended to receive a gripping head of the lug, said first edge including a bearing surface intended to transmit the movement of the moving armature to the contact door movable movable contact in a first direction of movement from the closed position to its open position.
  • the coupling hook comprises a second edge having a bearing surface for transmitting the movement of the moving armature to the movable contact holder of the moving contact in a second direction of movement, from the open position to its closed position.
  • the towing hook comprises play catching means capable of eliminating the clearances required for mounting the actuating block on the cutoff block to ensure compliance with a reduced rating chain according to a direction of movement of the movable contact holder.
  • the play-catching means comprise an elastic blade substantially positioned parallel to the second edge of the coupling hook, said elastic blade having the shape of a blade damper by deforming in the moving direction of the moving contact holder as soon as it comes into contact with the attachment head of a lug secured to a movable contact holder.
  • the gripping head of the lug is movable relative to the movable contact holder, the attachment head being movable in a direction parallel to the direction of movement of the movable contact carrier.
  • the attachment head is connected to the movable contact carrier by a transmission axis of variable length.
  • said transmission axis comprises a first end attached to the attachment head, and a second end having a thread intended to collaborate with a thread formed in the movable contact holder integral with the movable contact.
  • the modular electrical switching device comprises three unitary breaking units, the actuating devices of said blocks being respectively controlled synchronously by the actuating block to control the opening of the electrical contacts.
  • the actuating block comprises a tray fixed to the moving armature, said tray having three hitching hooks intended respectively to collaborate with a hooking head of a lug of a movable contact holder integral movable contact of a unitary block of cutoff.
  • the modular electrical switching device comprises a removable electrical control module positioned and removably attached to the housing of the actuating block, said module comprising the electronic control means to ensure a repetitive and constant operation of the actuator for a wide range of supply voltage.
  • the modular electrical switching device comprises a removable thermal protection module having a housing in which at least one current sensor is intended to be positioned around a connection pad of a unitary breaking block, said module being interposed removably between the breaking block and connection terminal blocks and comprising communication and power supply means for automatically connecting with the removable electrical control module to self-power as well as to transmit the measurements made by the current sensors.
  • the electrical switching assembly comprises electrical conductors positioned respectively inside second footprints of the two bases of the two modular contactors.
  • the modular electrical switching device 1 according to the invention as shown in FIG. figure 1 comprises a breaking block 100 associated with an actuating block 200.
  • the modular electrical switching device 1 is preferably a contactor.
  • the terms contactor or switching device or modular electrical switching device will be used thereafter without distinction.
  • the modular contactor 1 comprises fast fixing means allowing the attachment of the actuating block 200 to the breaking block 100 removably.
  • the actuating block 200 comprises an actuating module 230 connected to a removable electrical control module 250.
  • the removable electrical control module 250 may comprise electronic control means powered by a control electronics.
  • the terms removable electric control module 250 or removable electronic control module 250 will be used thereafter without distinction.
  • the actuation module 230 comprises in known manner an electromagnetic type actuator more particularly comprising a fixed yoke 201 and a movable armature 202 able to move relative to the fixed yoke 201 between two positions, an open position and a closed position.
  • the electromagnetic actuator also comprises an actuating coil which when traversed by a control current makes it possible to move the movable armature 202 from its open position to its closed position.
  • a return spring 204 moves the movable armature 202 from its closed position to its open position. According to a particular embodiment as represented on the Figures 3 and 4 , the return spring 204 acts on the mobile armature 202 via a rotary lever 205.
  • the fixed armature 201 comprises a U-shaped section having two outer branches and a transverse armature secured to a first end of the outer branches.
  • the actuator comprises an actuating coil preferably comprising two control coils 203 electrically connected.
  • the two windings respectively comprise a longitudinal axis substantially coinciding with that of the outer branches of the U-shaped magnetic yoke.
  • said control windings 203 are wound on insulating carcasses placed on the outer branches of the magnetic yoke 201.
  • two control coils 203 are preferably identical.
  • the return spring 204 is able to move a moving element 220 from its closed position to its open position.
  • the mobile assembly 220 comprises the mobile armature 202 of the actuator positioned in a tray 211.
  • the return spring acts on a multi-function lever 215 integral with the tray 211.
  • Said multi-function lever 205 is arranged to manage a balancing of the mobile armature 202 to allow simultaneous closure of the 3 power poles while reducing friction.
  • the multi-function lever 205 also allows the drive of the auxiliary contact blocks and the provision of a visu front panel of the modular electrical switching device 1.
  • the multifunction lever 205 can be slaved in two ways. As shown on the figure 31A a torsion spring 206 is used to maintain it in an operating position. As shown on the figure 31B a compression spring is used to maintain it in an operating position.
  • the actuator also preferably comprises polar plates 215 fixed to the outer branches of the U-shaped magnetic yoke. improve the magnetic behavior of the actuator.
  • the actuator may be of the monostable or bistable type.
  • said actuator comprises at least one permanent magnet preferably placed between the two polar plates 215.
  • the magnetic yoke 201 has an E-shaped section having two outer branches, at least one central branch, and a transverse reinforcement secured to a first end of the outer and central branches.
  • the movable armature is placed opposite the second ends of the outer branches and moves in translation.
  • the movable armature also comprises an E-shaped section comprising two outer branches, at least one central branch, and a transverse frame secured to a first end of the outer and central branches.
  • the control coil having a longitudinal axis substantially coincides with that of the central branch of the magnetic yoke E.
  • said control coil comprises a winding wound on an insulating casing placed on the central branch of the magnetic yoke.
  • the actuator is positioned in a housing of the actuating module 230.
  • the control coils 203 of the actuating coil comprise connection terminals 207 intended to come into contact with the adaptive connection means of the removable electrical control module 250. As represented in particular on the Figure 5B each control winding 203 has two connection terminals 207.
  • connection terminals 207 of the two control coils 203 are preferably aligned.
  • the four connection terminals 207 of the two control coils 203 are preferably arranged diagonally.
  • the removable module of electrical control 250 comprises electronic control means powered by a control electronics. Removable electronic control module 250 is then intended to ensure a repetitive and constant operation of the actuator for a wide range of supply voltage. Said removable electronic control module is positioned and fixed on the housing of the actuating module 230. At the time of its positioning on said housing, the connection terminals 207 of the control coils 203 are automatically interconnected with the adaptive connection means of the module Removable electronic control device 250.
  • the adaptive connection means are integrated directly into a Printed Circuit Boar (PCB) of the removable electrical control module 250.
  • PCB Printed Circuit Boar
  • connection between the two control coils 203 judiciously distributed on the two outer branches of the magnetic yoke 201 of the actuator can be in series or in parallel.
  • the adaptive connection means allow a series or parallel connection of the two control coils 203 at the time of connection of the removable electrical control module 250 to the actuating module 230.
  • the adaptive connection means thus allow a wider adaptation as needed for the application while maintaining an actuation coil common to all applications.
  • the printed circuit board (PCB) of the removable electrical control module 250 comprises electrical tracks designed and configured to connect the terminals 207 of the control coils 203 in series.
  • the printed circuit board (PCB) of the removable electrical control module 250 comprises electrical tracks designed and configured to connect the terminals 207 of the control coils 203 in parallel.
  • the control commands as well as the power supply of the control coils 203 pass through these connection terminals 207.
  • This removable electric control module 250 may comprise several variants depending on the intended application (in particular according to the network voltage). Said module is preferably mounted last on a contactor or contactor equipped with a thermal protection (choke). The final choice of the electrical control module to install allows the installer to make a delayed differentiation. This removable electrical control module 250 may also be provided with connections allowing communication, for example with a management computer of the installation, a configuration tool.
  • the breaking block 100 of the contactor 1 comprises one or more electric poles.
  • the contactor has three electrical poles, it is called tripolar contactor.
  • a unitary cut-off unit 80 also commonly called cut-off bulb, is then associated with each electrical pole.
  • the three unitary breaking units 80 are then synchronously controlled by the actuating block 200 acting on actuating devices 34 of the unitary clipping units 80.
  • the cutoff blocks can be controlled synchronously and simultaneously. In other words, all the blocks move at the same time.
  • the cutoff blocks can be controlled in a synchronized and non-simultaneous manner. In other words, all the blocks move through the action of the actuating block but there is a time shift between the movement of each block. This time lag is reproducible and controlled.
  • the unitary cleavage units 80 comprise a housing 31 formed of two half-shells 80A.
  • the two half-shells 80A of the housing 31 are preferably made of molded plastic material. Electrical contacts are arranged inside the housing 31.
  • the half-shells 80A are assembled to form an assembly of substantially parallelepiped shape developing along a longitudinal reference plane XZ.
  • the two half-shells 80A constituting the housing 31 are preferably of identical shape.
  • the term "identical shape” means that the two half-shells, preferably made by molding, come from the same imprint. This has the industrial advantage of managing a single part variant and a single investment.
  • the housing 31 then has two main faces 81 arranged parallel to the longitudinal plane XZ. Said housing further comprises two lateral faces 82, an upper face 83 and a lower face 84.
  • the unitary breaking unit 80 comprises electrical breaking means 30 composed of two fixed contacts 32 respectively connected to an electrical terminal block 500 by connection pads 45.
  • the two fixed contacts 32 respectively comprise an electrical contact zone 37.
  • the electrical breaking means 30 are then positioned in an internal volume of the housing 31, internal volume delimited by the two half-shells 80A.
  • the electric breaking means 30 further comprise a movable contact 33 in the form of a bridge comprising an elongated body along a longitudinal axis X.
  • the movable contact bridge 33 comprises two ends on which are positioned two contact zones 36 each capable of collaborating respectively with a contact zone 37 of a fixed contact 32 in a closed position of the breaking means.
  • moving contact or “mobile contact bridge” will be used interchangeably in the following description.
  • an elastic means 25 such as in particular a helical spring, ensures between the contact zones 36 and 37, a contact pressure sufficient to ensure the establishment and passage of the current in good conditions .
  • the resilient means 25 is generally referred to as a pole spring. This contact pressure is also provided for the passage of the permanent current without excessive heating, as well as to ensure sufficient electrical durability.
  • each opening volume 35 is associated with an arc extinction chamber.
  • the arc extinguishing chamber opening on the opening volume 35 is delimited by two parallel walls and placed on either side of the longitudinal geometric reference plane XZ, a rear wall remote from the opening volume. 35, a bottom wall and an upper wall.
  • said chamber may comprise a stack of at least two metal plates 40 planar and perpendicular to the longitudinal geometric reference plane XZ. These metal plates, called fins, are intended for the deionization of the arc.
  • the metal plates 40 are preferably made of ferromagnetic material. Said fins tend to exert on the arc a ferromagnetic attraction force. Said fins are of substantially rectangular shape and comprise a longitudinal axis and a median axis.
  • said chamber is delimited by two flanges 68 of ferromagnetic material.
  • the two lateral flanges 68 are parallel and placed on either side of a median longitudinal plane XZ.
  • the two lateral flanges 68 are arranged to frame one of the ends of the movable bridge 33 over its entire displacement between the open position and the closed position.
  • the two side flanges 68 are spaced from each other to allow the displacement of the movable contact bridge 33.
  • the inner walls of said flanges 68 comprises a layer of insulating material. The positioning of the layers of insulating material on the flanges 68 makes it possible to prevent the arc from catching on the inner walls of said flanges 68. These layers are preferably made of gas-generating material.
  • the extinguishing chamber is also delimited by a rear wall 72 placed perpendicular to the XZ plane. Said posterior wall is remote from the opening volume 35 to be positioned opposite to an opening volume of the contact areas 36, 37.
  • the rear wall 72 connects the two side flanges 68 so as to form a substantially U-shaped metal assembly.
  • the rear wall 72 connects the two flanges over part of their height.
  • the two lateral flanges 68 extend in a direction parallel to the median longitudinal plane XZ so as to completely enclose the contact zone 36 of the movable contact bridge 33. More precisely, the two lateral flanges 68 extend further enclose the contact zone 36 of the movable contact bridge 33 inside the arc extinguishing chamber 24. In other words, the development of the flanges in length makes it possible to close each opening volume 35 laterally so as to channel the escape of ionized particles at the moment of opening of the electrical contacts.
  • each arc extinguishing chamber 24 may comprise a metal upper baffle 69. As shown in FIG. figure 18 said baffle electrically connects a fixed contact 32 to a rear wall 72 to form an upper portion of the metal wall of said quench chamber.
  • the movable contact bridge 33 comprises arc horns 39 at each of the two ends. Said arc horns extend beyond the contact zones towards the rear walls 72 of the arc extinguishing chambers.
  • the arc horns 39 are inclined with respect to the longitudinal axis X of the movable contact bridge 33.
  • the casing 31 of the unitary cut-off block 80 is intended to be positioned in a base 110 of the cut-off block 100 of the contactor 1.
  • the base 110 has an internal face having a first cavity 120 in which unitary breaking units are positioned. 80.
  • the lower face 84 of the housing 31 then comes to be positioned vis-a-vis in the first cavity 120 of the base 110.
  • the main faces 81 are contiguous to the partition walls 111 of the base 110.
  • the partition walls 111 positioned on the outer edges of the base 110 thus form walls of the modular electrical switching device 1.
  • the base 110 comprises a first cavity 120 having at least three compartments intended to collaborate respectively with a unitary cutoff unit 80.
  • Each unitary cutoff unit 80 cooperates with the base 110 to produce at least one exhaust gas outlet channel allowing a cut without noise or ionized gases outside the base.
  • the two half-shells according to the invention are intended to collaborate with a compartment of the first cavity 120 of a base 110 of a modular electrical switching device 1 in order to define two channels for evacuation of the cutoff gases.
  • Each evacuation channel is then connected to an internal volume of the housing 31 by an opening 86 made in a half-shell 80A.
  • the half-shells respectively comprise a rib 85 intended to collaborate with a compartment of the first cavity 120 of a base 110 of a modular electrical switching device 1 in order to define the discharge channels of the cutoff gases.
  • the ribs 85 of the two half-shells 80A assembled form at a contact plane a lower rib 805 on the lower face 84 of the housing 31.
  • the lower rib 805 develops in a direction parallel to the longitudinal plane XZ.
  • Said rib is intended to collaborate with the first imprint 120 of a base 110 of a modular electrical switching device 1 in order to delimit two discharge gas discharge channels, each channel being connected to an internal volume of the housing by a opening 86 made in a half-shell 80A.
  • the housing 31 of the unitary block of cutoff 80 is intended to be positioned in a base 110 of a modular electrical switching device 1.
  • the lower face 84 of the housing 31 then comes to position itself vis-à-vis a first cavity 120 of the base 110. More particularly, the lower rib 805 has on the lower face 84 of the housing 31 delimits with the cavity 120 two discharge channels cutoff gases. Each channel is connected to an internal volume of the housing by an opening 86 made in a half-shell 80A. According to a particular embodiment, the openings 86 preferably pass through the lower face 84 of the case 31. More specifically, each half-shell 80A comprises respectively an opening 86 opening. In order to effectively reduce the external manifestations of the cutoff gases, a filter block pierced with holes is placed in each discharge channel. As an exemplary embodiment, a gate 87 is placed at each of the openings 86 of the housing 31.
  • each compartment of the first footprint 120 of the base 110 comprises a hollow rib 121.
  • the lower rib 805 protruding from the housing 31 is then arranged to be placed in the hollow portion of the first footprint 120 of the base 110 at the time of positioning of the cutoff block 80 in the modular electrical switching device 1 to delimit two separate discharge channels.
  • the lower rib 805 comprises sections of concave and / or convex shape.
  • the lower face 84 of the unitary cleavage units 80 has a shape for modulating the section of the gas evacuation channel along this channel so as to alternate zones of relaxation and compression.
  • Each compartment of the first cavity 120 is hollow so that the discharge gas discharge channels comprise walls formed by a portion of the lower face 84 of a unitary cutoff unit 80 and a part of the base 110 of the device. Modular electrical switching.
  • Each compartment of the first cavity 120 has on one face intended to be placed opposite the lower face 84 of the housing 31 of the unitary cutoff unit 80. Said face comprises a hollow zone 121 in which the lower rib 805 projecting said case is intended to be placed to delimit two separate discharge channels.
  • each compartment of the first cavity 120 of the base 110 has a wall in which two holes 122 for evacuation of gases are arranged. Each hole 122 is connected to one of the evacuation channels.
  • the two half-shells respectively comprise a rib 85 on their main face 81.
  • the ribs 85 are preferably recessed with respect to the main faces 81.
  • the casing 31 comprises two ribs 85 which develop in a direction parallel to the longitudinal plane XZ. Said ribs are intended to collaborate with a first imprint 120 of a base 110 of a modular electrical switching device 1.
  • Each channel is connected to an internal volume of the housing by an opening 86 made in a half-shell 80A.
  • the openings 86 preferably pass through the lower face 84 of the housing 31.
  • each half-shell 80A comprises respectively an opening 86 opening.
  • the base 110 further comprises an outer face intended to collaborate with a chassis or a DIN rail type of fixing rail.
  • the outer face comprises a second cavity 130 having an internal volume delimited by a wall. Said second cavity 130 is thus positioned between the external face of said base 110 and the first cavity 120 intended for the positioning of a cutoff block 80.
  • the second cavity 130 comprises first openings opening respectively in main walls of the modular contactor 1 and second connection openings 132 opening near the connection pads 45 of the modular contactor 1.
  • the first openings of the second cavity 130 are preferably made in a breakable wall of the base 110.
  • the breakable portion is removed or not not withdrawn.
  • the breakable parts have not been removed.
  • the breakable parts of the bases 110 have been removed on the two main faces of the switching device to leave a passage for electrical conductors 301.
  • the first and second openings allow the passage of electrical conductors 301 connecting at least one electrical pole of a first modular switch 1 to an electrical pole of a second modular switch 2 placed against the first.
  • the internal volume of the second cavity 130 is substantially of parallelepipedal shape and has an open face on the external face of the modular contactor 1, 2.
  • the second cavity 130 comprises at least one channel having an edge comprising at least one connection opening 132 opening at a connection pad 45 of a unitary breaking block 80.
  • Said at least one channel extends according to a direction substantially perpendicular to the longitudinal plane XZ and completely through the base 110 to open on either side of said base.
  • said at least one channel comprises a substantially parallelepipedal volume having two substantially parallel edges.
  • the second cavity 130 comprises two substantially identical channels and arranged parallel to one another.
  • the channels have a parallelepipedic shape respectively.
  • the internal volumes of each channel then comprise first openings opening respectively into the main walls of the modular contactor 1, 2 and the second connection openings 132 opening near the connection areas 45 of the modular contactor 1, 2.
  • the two channels are separated by a partition. Said partition is intended to separate the upstream from the downstream. Said partition may be intended to collaborate with a DIN rail type of fixing rail.
  • the second cavity 130 comprises two channels, only one of the two edges of each channel comprises the connection openings 132.
  • the second connection openings 132 of a first channel open in the vicinity of the upstream connection areas of the modular contactor 1. 2 and the second connection openings 132 of a second channel 130 open near the upstream connection areas of the modular contactor 1, 2.
  • connection openings 132 are arranged in the two parallel edges of the channel, each edge respectively having the connecting openings adapted to be traversed by one of the reversal bars of the inversion bar set.
  • the second cavity 130 has two slots respectively cut into the lateral faces of the base 110. These slots open respectively at the connection pads 45 of the unitary breaking units 80. Each slot is intended to receive a complete set of inversion bar 300 having one or more inverting bars 301.
  • the modular electrical switching device 1 may further comprise one or more fault detection devices including thermal.
  • the detection devices are connected to the actuator block 200 to control the opening of the electrical contacts via the actuator.
  • the modular electrical switching device 1 comprises a removable thermal protection module 400.
  • a removable thermal protection module 400 comprises a housing in which one or more annular-shaped current sensors are positioned. Said sensors are intended to be positioned around the connection pads 45 of the unitary breaking units 85 of the breaking block 100.
  • the current sensors may be of the Rowgoski type.
  • the removable thermal protection module 400 is adapted to a three-pole modular contactor and thus comprises three openings 401 allowing its positioning by interlocking on the connection pads 45 of the three unipolar breaking blocks 85.
  • the removable thermal protection module 400 has the distinction of being integrated in the modular contactor 1 so as to be interposed between the breaking block 100 and the connection terminal blocks 500.
  • the removable thermal protection module 400 has the particularity of not having own power supply means.
  • the removable thermal protection module 400 comprises communication and power supply means 402 intended to automatically connect with the removable electrical control module 250 of the actuating block 200. These communication connection means and power supply 402 are able both to supply the removable thermal protection module 400 and to transmit the measurements made by the current sensors.
  • the positioning of the removable electric control module 250 on the housing of the actuating block 200 allows the connection and the automatic power supply between the current sensors of the removable thermal protection module 400 and the removable electrical control module 250.
  • the quick fixing means of the actuating block 200 with cut-off block 100 comprise a first part integral with the movable armature 202 of the actuating block 200 and a second part integral with the cutoff block 100.
  • the quick fastening means comprise at least one coupling hook 214 for fixing and holding the breaking block 100 to the actuating block 200.
  • Said coupling hitch 214 is integral with the mobile armature 202 of the electromagnetic actuator and is able to collaborate with an actuating device 34 of the movable contact 33 of the breaking block 100 to transmit the movement of the mobile armature 202. at the mobile contact 33.
  • the coupling hook 214 is intended both to fix the actuating block 200 with the cutoff block 100 and to transmit the movement of the mobile armature 202 of the electromagnetic actuator to the movable contact bridge 33 of a unitary breaking block 80 of the breaking block 100.
  • the actuating device 34 of the movable contact 33 comprises a movable contact holder 38 integral with the movable contact 33. Said movable contact holder 38 is connected to an attachment head 51. According to one embodiment of the invention, the contact mobile 33 is preferably slidably mounted on the movable contact holder 38.
  • the movable contact holder 38 is an integral part of the unitary breaking unit 80 and does not form part of the moving part of the electromagnetic actuator of the actuating block 200.
  • Each unitary cut-off unit then comprises respectively a door movable contact 38 secured to the movable contact 33.
  • the breaking block 100 of the modular contactor 1 according to the invention comprises three unitary breaking units 80 respectively having a movable contact holder 38.
  • Each unitary cutoff unit then has an autonomous operation with respect to the other unit blocks.
  • the coupling hook 214 comprises an inner surface having a first and a second edge respectively comprising bearing surfaces capable of transmitting the movements of the mobile armature 202 to the moving contact from a closed position towards an open position and vice versa.
  • the coupling hook 214 preferably has a C-shaped profile having two substantially parallel edges.
  • a first edge of the coupling hook 214 comprises a slot which is intended to receive the attachment head 51 integral with the contact holder 38.
  • the first edge comprises a bearing surface intended to transmit the movement of the mobile armature 202 to the movable contact holder 38 of the movable contact 33 in a first direction of movement, in particular from the closed position of the movable armature 202 towards its open position.
  • a second edge comprises a bearing surface intended to transmit the movement of the mobile armature 202 to the movable contact holder 38 of the movable contact 33 in a second direction of movement, in particular from the open position of the movable armature 202 towards its position closed.
  • the fixing means 210 comprise a tray 211 intended to be fixed to the mobile armature 202.
  • the tray 211 comprises a counterbore a first face. Part of the mobile armature 202 is intended to be positioned by recess in said counterbore.
  • Fastening means 210 comprise retaining keys 212 removable through the walls of the counterbore and a portion of the movable armature 202.
  • the shape of the countersink of the tray 211 is substantially rectangular to receive the transverse reinforcement solidarisant the external branches of the U-shaped mobile armature of the mobile armature 202.
  • Said transverse armature comprises through holes allowing the passage of the retaining keys 212 removable during attachment of the mobile armature 202 with the tray 211.
  • the tray 211 comprises three hitching hooks 214 intended respectively to collaborate with a fastening head 51 of a movable contact holder 38 secured to a movable contact 33 of a unitary cut-off block 80.
  • three unitary breaking units 80 are then synchronously controlled by the actuating block 200 acting on the unitary breaking units.
  • the unitary clipping units 80 can be controlled synchronously and simultaneously or in a synchronized and non-simultaneous manner.
  • Each unit block 80 is connected to the actuating block 200 and is controlled at the opening of the contacts 32, 33 by moving in translation the movable contact bridge 33 in a direction perpendicular to the longitudinal axis X.
  • the movable bridge contact 33 moves between an open position and a closed position of the electrical contacts.
  • the coordination at the opening of the different unitary breaking units 80 is carried out directly by the actuating block 200 and not by additional means such as in particular by connecting control axes unit blocks of cutoff.
  • each unitary block of cutoff 80 can be directly removed from the base 110 of the fixing block 100. This withdrawal can be realized from independently from that of the other unitary cleavage units 80.
  • the modular contactor 1 then comprises quick fixing means 210 allowing the attachment of the actuating block 200 to the breaking block 100 removably.
  • the towing hook 214 comprises means of catching play capable of eliminating the clearances necessary for mounting the actuating block 200 on the break block 100. These means of catching games thus guarantee the respect for a reduced quotation chain.
  • the game-catching means comprise an elastic blade 213 substantially positioned parallel to the second edge of the coupling hook 214.
  • Said elastic blade 213 behaves like a blade damper by deforming along the Z direction as soon as it enters into position. contact with the attachment head 51 connected to a movable contact holder 38 secured to a movable contact 33.
  • the clearance is made in such a way that it avoids relative movements of the different parts during the electrical or mechanical maneuvers of the modular contactor.
  • the game-catching means thus make it possible to reach high levels of mechanical durability.
  • a single elastic play catch blade could be used and then be common to the three unit blocks of cut.
  • the elastic blade 213 is positioned in a housing of the tray 211.
  • the elastic blade 213 is preferably metal and is made by folding. Said blade has locating lugs intended to be placed inside the tray 211 in order to limit any movement of said blade.
  • the elastic blade 213 has a dual function. It allows on the one hand a recovery of the clearance between tray 211 and attachment head 51 and on the other hand a recovery of clearance between tray 211 and the movable armature 202 of the electromagnetic actuator.
  • the wave shape of the elastic blade 213 has the effect of locating fastening head 51 in the axis of the moving assembly 220 and to allow a snap-in sensation or hard point to the installer validating the proper assembly of the two parts one on the other.
  • each movable bridge 33 of a unitary cutoff unit 80 comprises a coupling head 51 intended to be connected to a coupling hook 214 of a tray 211 of a movable armature 202 of the electromagnetic actuator.
  • the attachment head 51 has support surfaces intended to collaborate with the bearing surfaces of the two edges of the coupling hook 214 in a C-shape.
  • the attachment head is positioned between the two edges of the coupling hook 214.
  • the attachment head 51 is connected to the movable contact holder 38 via a transmission axis 52.
  • the transmission axis 52 then comes to be positioned inside the the slot of the first edge of the tow hook 214.
  • the position of the attachment head 51 is adjustable in the direction of movement of the movable contact bridge 33, in other words in a direction perpendicular to the longitudinal axis X. This setting allows to optimize the contact crushing stroke between the electrical contact zones 37 of the two fixed contacts 32 and the contact zones 36 of the movable contact bridge 33.
  • the movable contact bridge 33 of each unitary breaking block 80 moves between an open position and a closed position of the electrical contacts. The purpose is to ensure that for a given displacement stroke, the electrical contacts are in the closed position.
  • the displacement stroke is fixed by the electromagnetic actuator of the actuating block 200.
  • the distance separating the movable contact bridge 33 from the fixed contacts 32 in the open position of the contacts can vary from one unitary breaking block 80 to the other .
  • the final positions of the movable contact bridges 33 may be different.
  • a multipole contactor having a single actuator simultaneously controlling a plurality of movable breaking bridges 33 it is possible that all movable breaking bridges have not reached the same closed position.
  • a movable breaking bridge 33 of a unitary cutoff unit 80 may not be totally in a closed position while the other movable bridges 33 of the other unitary clipping units are already in a closed position. closing position.
  • An adjustment of the crushing stroke of the contacts consists in ensuring the holding of a mechanical dimension between the attachment head 51 and the housing 31 of the unitary cutoff unit 80 in the closed position of the contacts. More precisely, the adjustment of the crushing stroke of the contacts consists in guaranteeing the holding of a dimension between the bearing surfaces of the fastening head 51 and a reference surface of the casing 31 of the unitary cut-off block 80. This dimension will be reproduced for all the unitary breaking blocks of the same modular contactor 1 according to the invention.
  • the adjustment of the crushing stroke is achieved thanks to the transmission axis 52 connecting the attachment head 51 to the movable contact holder 38.
  • said transmission axis 52 is of variable length.
  • the transmission axis 52 has a first end attached to the attachment head 51 and a second end having a thread.
  • the threading is intended to collaborate with a tapping made in the movable contact holder 38 secured to the movable contact bridge 33.
  • the attachment head 51 comprises a fingerprint intended to collaborate with an adjustment tool (not shown).
  • the adjustment tool is intended to be handled by a user wishing to adjust the length of the transmission axis 52.
  • the attachment head may comprise for example a CHc type profile.
  • the attachment head may comprise for example a profile of hexagonal shape.
  • the method for adjusting the crushing stroke of the electrical contacts of a unitary breaking unit 80 consists in placing the movable contact holder 38 in a closed position of the electrical contacts 32, 33.
  • the crush stroke of the contacts can be also called the wear guard.
  • This operation is generally carried out manually before mounting the box 31 of the unitary cut-off block 80 on the base 111 of the cut-off block 110.
  • the next step consists in positioning an adjusting jig 600 between the outer surface of the box 31 and a surface 51. If the distance between the housing and the attachment head 51 is less than the thickness of the adjustment jig 600 and does not allow the positioning of said jig, the transmission axis 52 is then lengthened in particular by unscrewing it relative to the case 31.
  • the transmission axis 52 is then shortened in particular by screwing relative to the housing 31.
  • the adjustment of the length of the transmission shaft 52 being realized, the adjustment template 600 can be removed.
  • the first step consists in maximizing the length of the transmission axis 52, in particular by unscrewing it as much as possible.
  • the second stage as represented on the Figures 7A and 7B , consists in positioning the adjusting jig 600 between a bearing surface of the attachment head 51 and a reference surface of the case 31 of the unitary cut-off block 80.
  • the movable contact holder 38 is then brought in a closed position of the electrical contacts 32, 33 by screwing the transmission axis 52. As shown in FIGS.
  • each unitary cutoff block 80 also makes it possible to create a time shift or a synchronization in the opening of the movable contacts 33 of the unitary breaking units 80 of the same modular switching device according to the invention.
  • This time shift in the opening of the electrical poles of a modular switching device makes it possible in particular to reduce the wear of the contacts when opening a three-phase product, by deliberately advancing the opening of a pole with respect to the two other.
  • This time shift in the opening of the electrical poles of a modular switching device also makes it possible to guarantee, for certain four-phase applications, an advance or a delay of the opening of the neutral with respect to the phases.
  • this operation can be performed simultaneously for all the unitary clipping units 80 positioned in a unitary base, bipolar, three-pole or four-pole.
  • a template associated with the number of poles present is then used.
  • a time shift of the opening of one or more poles can easily be achieved by a template incorporating the shift of the pole to undergo the advance or the delay of closure.
  • the assembly and / or disassembly of the cutoff block 100 with actuating block 200 can be easily achieved which facilitates for example maintenance operations including the cutoff block.
  • the positioning references of the actuating block 200 with respect to the preset cutoff unit blocks of the cutoff block 100 allow to guarantee a very low tolerance of the wear wear of the contacts and this even in case of change of the unit blocks during the maintenance intervention.
  • the wear guard of the contacts is also called contact crush. This then has the effect of ensuring a low tolerance on electrical endurance despite the manufacturing tolerances of any industrial product, and simultaneously to allow a gain of contact material (silver-based) and a lower consumption of the actuator.
  • the modular contactor 1 according to the invention comprises connection terminal blocks 500 intended to be connected to the connection terminals 45 of the breaking block.
  • the electrical switching device 1 comprises additional blocks of removable auxiliary contacts 700. These blocks have the particularity of being removable.
  • the removable auxiliary contact blocks 700 comprise a mobile contact support SCM which is controlled at the opening or by the operating axis 216 of the moving assembly 220 through the tray 211 moving in a translation movement or by the multifunction lever 205 moving in a rotational movement.
  • the removable auxiliary contact blocks 700 are controlled by a translational movement of the moving element 202 to indicate the open or closed state NO / NC of the electrical switching device. 1.
  • Said additive block is mounted vertically with respect to the installation position.
  • the removable auxiliary contact blocks 700 are controlled by a rotational movement of the multi-function lever 205.
  • the additive blocks are mounted frontally with respect to the installation position. .
  • the multi-function lever 205 may offer the possibility, via a particular flag-like shape, of indicating the opening state of the electrical switching device 1. This mechanical visualization of the position of the electrical switching device 1 is possible thanks to an angular displacement of the lever 205 comprising a flag 208.
  • the invention relates to a switching assembly 1000 comprising two modular contactors 1, 2 as defined above.
  • Said modular contactors 1, 2 of the switching assembly 1000 are placed side by side so as to be contiguous with one of their main faces.
  • the two modular contactors 1, 2 are electrically connected.
  • the switching assembly 1000 comprises electrical conductors 301 respectively positioned inside the second cavities 130 of the two bases 110 of the two modular contactors 1, 2.
  • the electrical conductors 301 connecting the electrical poles of the first modular contactor 1 to the electrical poles of the second modular contactor 2 comprise 301 rigid or semi rigid conductors.
  • the internal volume of the second cavity 130 is intended to receive sets of inversion bars 300 capable of connecting two modular contactors 1, 2 in an inverter mode as shown in FIG. the Figures 21 and 22 .
  • the two contactors 1, 2 connected by the inversion busbar 300 are three-pole contactors.
  • the busbar 300 then comprises six inverting bars 301 respectively connecting two connection pads 45 of two contactors.
  • the electrical conductors 301 of the switching assembly 1000 are arranged in two groups 300 respectively comprising three inversion bars 301.
  • the electrical conductors 301 of the same group 300 are held together by a clamp 302.
  • connection opening 132 of a second cavity 130 opening at a connection pad 45 of a unitary cut-off unit 80 is then traversed by one of the busbar reversal bars 301.
  • each connection opening 132 allows the passage and the positioning of an inversion bar next to a connection pad 45 so that the electrical contact between the pad and the bar can take place.
  • the introduction of the reversal bars 301 of the reversing bar set 300 is done by the outer face of the base 110. After sliding the ends of the inverting bars 301 in the connection openings 132, the set of 300 bar undergoes a slight rotation to be positioned inside the second footprint 130.
  • the introduction of inversion bars 301 of the inversion bar set 300 is done directly by the lateral face of the base 110.
  • the inversion busbar 300 is positioned in the slot of the second impression 130 by sliding in the latter.
  • the ends of the inverting bars 301 are then directly attached to the connection pads 45.
  • an upstream connection pad 45 of the first electrical pole of the first modular switch 1 is connected to an upstream connection pad 45 of the first electrical pole of the second modular switch 2.
  • a connection pad downstream 45 of the first electrical pole of the first modular contactor 1 is connected a downstream connection pad 45 of the third electrical pole of the second modular switch 2.
  • An upstream connection pad 45 of the second electrical pole of the first modular switch 1 is connected to a connection pad upstream 45 of the second electrical pole of the second modular contactor 2.
  • a downstream connection pad 45 of the second electrical pole of the first modular switch 1 is connected to a downstream connection pad 45 of the second electric pole of the second modular switch 2.
  • An upstream connection pad 45 of the third electrical pole of the first modular contactor 1 is connected the range of r upstream tuning 45 of the third electrical pole of the second modular contactor 2.
  • a downstream connection area 45 of the third electrical pole of the first modular contactor 1 is connected the downstream connection area 45 of the first electrical pole of the second modular contactor 2.
  • this mode can be applied to four-pole contactors (not shown) for reversing electric power sources.
  • the two busbars 300 are placed inside the contactors.
  • This innovative configuration makes it possible not to increase the total volume of the electrical installation. This presents an important advantage over the solutions of the state of the art where the installation of the bar sets on the outside ( figure 19 ) causes problems when wiring the contactors in the control cabinets. Indeed, the place inside these electrical cabinets is always limited.
  • this configuration of the inverter busbars inside the modular contactors 1, 2 according to the invention also makes it possible to integrate a removable measuring and thermal protection module 400 with one of the two modular contactors 1, 2 as shown on the Figures 21 and 22 .
  • one of the modular contactors 2 of the switching assembly 1000 does not include a removable thermal protection module 400.
  • Said modular contactor 2 comprises an actuating block 200 associated with a cutoff block 100 not equipped with a removable module of thermal protection 400.
  • the invention is particularly intended for multipole switchgear devices of the electronically controlled contactor or choke type.
  • the simplified modular structure architecture of these devices makes it possible to accept one or more cutoff blocks, as well as removable thermal protection in the volume of the device. This architecture allows easy and differentiated maintenance of the various modular elements, whether electrical, electronic or electromechanical.
EP13815020.6A 2012-12-18 2013-10-28 Dispositif modulaire de commutation électrique comportant au moins un bloc de coupure unipolaire et ensemble de commutation comportant de tels dispositifs Active EP2936534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1262255A FR2999791B1 (fr) 2012-12-18 2012-12-18 Dispositif modulaire de commutation electrique comportant au moins un bloc de coupure unipolaire et ensemble de commutation comportant de tels dispositifs
PCT/FR2013/052558 WO2014096579A1 (fr) 2012-12-18 2013-10-28 Dispositif modulaire de commutation électrique comportant au moins un bloc de coupure unipolaire et ensemble de commutation comportant de tels dispositifs

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EP2936534A1 EP2936534A1 (fr) 2015-10-28
EP2936534B1 true EP2936534B1 (fr) 2017-01-25

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US (1) US9583292B2 (ja)
EP (1) EP2936534B1 (ja)
JP (1) JP6342417B2 (ja)
CN (1) CN104885181B (ja)
BR (1) BR112015012413B1 (ja)
FR (1) FR2999791B1 (ja)
RU (1) RU2628951C2 (ja)
WO (1) WO2014096579A1 (ja)

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BR112015012413A2 (pt) 2017-07-11
RU2015129537A (ru) 2017-01-26
WO2014096579A1 (fr) 2014-06-26
RU2628951C2 (ru) 2017-08-23
JP6342417B2 (ja) 2018-06-13
CN104885181A (zh) 2015-09-02
EP2936534A1 (fr) 2015-10-28
US9583292B2 (en) 2017-02-28
CN104885181B (zh) 2017-07-07
FR2999791A1 (fr) 2014-06-20
US20150325397A1 (en) 2015-11-12
FR2999791B1 (fr) 2015-01-02
JP2016501432A (ja) 2016-01-18
BR112015012413B1 (pt) 2021-02-09

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