Classifications

• • 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
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
• • 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

Definitions

• the invention relates to an electronic trip device for a multipolar electric line protection device, of the circuit breaker type.
• the invention relates more particularly to four-pole devices, having a neutral on the right or on the left in addition to the three phases.
• an electronic trip unit detects overload currents and short-circuit currents to open the circuit breaker contacts.
• an electronic release is to be able to have a wide range of settings, including the trigger level and the trigger time. It usually consists of an actuator controlled by an electronic card that monitors the current that passes through the circuit breaker via sensors.
• the electronic release is associated with a cutoff block containing in particular the interrupting chamber, the fixed and moving contacts, and the lock, in order to form the circuit breaker.
• An electronic trigger conventionally comprises at least one current measurement block having current sensors and a current measurement electrical processing block having an electronic card and an actuator.
• An apparatus, of the circuit breaker type is therefore mainly composed of a breaking block and a trigger. Everything is integrated into a base.
• Each trigger structure format corresponds to a particular reference.
• the dimension of the trigger structure is therefore specific to the number of current path that the circuit breaker has, and is also specific to the standard for positioning the neutral according to the country (right or left).
• the present invention aims to reduce the number of references, and to provide a universal solution of trigger structure, regardless of the number of poles (three-pole or four-pole) that includes the device in which it is integrated, and whatever the country-specific standard in which it is marketed.
• the invention relates to an electronic trip device for a multipole electric circuit protection device, of the circuit breaker type, comprising a current measurement block and an electrical treatment block of the current measurement.
• Said measurement block and said processing block extend essentially along a reference direction.
• This electronic trigger is mainly characterized in that said measurement and processing blocks consist of three-pole blocks connected to each other, and in that the trigger comprises means for adding a neutral to the right. or to the left of said measurement block and / or of said processing block, that is to say means of adding a neutral in front of or behind said measurement block and / or said processing block in the reference direction .
• the main idea underlying the invention is to have only one format of trigger structure, consisting of a three-pole structure.
• This three-pole structure can be used both for a three-pole apparatus, for a four-pole apparatus with a neutral in front of said measurement block and / or said processing block in the reference direction, or a four-pole apparatus with a neutral behind said block of measuring and / or said processing block according to the reference direction.
• a four-pole release it is therefore sufficient to start from its tripolar structure, and to add a unipolar element in front of or behind said measurement block and / or said processing block in the reference direction, as will be developed in the following of the description.
• said means for adding a neutral consist of a first means of adding a neutral in front of or behind said measurement block and / or said processing block in the reference direction and / or in a second adding means a neutral in front of or behind said measurement block and / or said processing block in the reference direction.
• Said first means for adding a neutral consist of a unipolar measuring extension disposed in front of or behind said measurement block and / or said processing block in the reference direction
• / or said second means of adding a neutral consists of a unipolar processing extension arranged in front of or behind said measuring block and / or said processing block in the reference direction: there is therefore an additional reference for the measuring extension, regardless of its position, and a reference additional for the extension of treatment, whatever its position.
• three elements namely a tripolar tripping structure, a measuring extension, and a processing extension, it is possible to manufacture a trip unit compatible for any three-pole and four-pole device.
• said measuring extension is attached to the measuring block and electrically isolated from the measurement block by means of a support part made of electrically insulating material.
• said support piece consists of a symmetrical part, comprising a partition wall provided on both sides with hooking means for fixing on one side to the measuring block, and on the other side to the measuring extension: this piece support, by its symmetry, can be positioned as well in front of as behind said measurement block and / or said processing block in the reference direction.
• said treatment extension is electrically connected to the treatment block by means of connection plugs.
• the processing block is delimited by a housing comprising a connecting face to the measuring block, and two side faces preferably perpendicular to the connecting face, a first of said side faces being provided with:
• connection plug of a first type allowing access to a particular function of the trigger
• connection plug of a second type for connecting an auxiliary o a connection plug of a second type for connecting an auxiliary
• a second of said side faces being provided with:
• connection plug of a second type electrically connected to that of the first side face o a connection plug of a second type electrically connected to that of the first side face.
• the processing extension is delimited by a housing comprising a connecting face to the measuring extension, and two side faces preferably perpendicular to the connection face, a first of said side faces being provided with a day giving access to:
• connection plug of a second type o a connection plug of a second type
• connection plug of a second type o the connection plug of a second type
• said plugs being all connected to an electronic card of the processing extension
• the first lateral face of the treatment block is located opposite the second lateral face of the treatment extension:
• connection plug of a first type of treatment block is inserted in the connection plug of a first type of treatment extension: thus, this plug of the first type is always accessible on the outside edge of the release, whether a neutral is added or not. If there is no neutral, the first type record is accessible from the first side face of the treatment block, and if there is a neutral on this side, the first type plug is accessible from the first side face of the treatment extension
• connection plug of a second type of treatment block is inserted into the connection plug of a second type of treatment extension.
• the second lateral face of the treatment block when adding a neutral on the side of the second lateral face of the treatment block, the second lateral face of the treatment block is located opposite the first lateral face of the treatment extension, the connection plug of a second type of processing block plugging into the plug of a second type of the processing extension.
• connection plug of a second type of the treatment extension is plugged into the connection plug of a corresponding second type of the block treatment: in fact, in the case of a three-pole device, this card is used to retrieve information on an auxiliary, which may be an external neutral for example. The idea is to use this form to retrieve information on the internal neutral added to the trigger, including information about the measurement of current and voltage.
• This plug is connected to a specific electronic card provided in the processing extension, to complete the electronic card processing block that only manages the three poles of the block.
• the trigger comprises electrical connection means between the measurement block and the processing block consisting, for each pole, of a male connector belonging to the measurement block and fitting into a female connector belonging to the processing block; electrical connection therefore does not require wired links, and is robust.
• the trigger comprises electrical connection means between the measuring extension and the processing extension comprising, for each pole, a male connector belonging to the measuring extension and fitting into a female connector belonging to the processing extension
• electrical connection means between the measuring extension and the processing extension comprising, for each pole, a male connector belonging to the measuring extension and fitting into a female connector belonging to the processing extension
• the same type of electrical connection is used as the one between the measuring block and the treatment block.
• the treatment extension is attached to the measuring extension by means of two tabs disposed on either side of the female connector and able to fit into two recesses of corresponding shape provided for this purpose on both sides of the male connector.
• the invention also relates to a circuit breaker type electrical protection device comprising a breaking block and an electronic release as described above.
• FIG. 1 is a perspective and exploded view of the electronic processing block and the current measurement block of a three-pole electronic trip unit according to the invention
• FIG. 2 shows, in perspective, the front of the assembled three-pole electronic trip unit
• FIG. 4 shows, in perspective, the four-pole electronic trip unit with the neutral in front of said measurement block and / or said processing block in the reference direction;
• FIG. 5 shows, in perspective, the four-pole electronic trigger with the neutral behind said measurement block and / or said processing block in the reference direction;
• FIG. 6a illustrates, in perspective, the back of a measuring extension
• FIG. 6b illustrates, in perspective, the front of a measuring extension
• FIG. 7 illustrates, in perspective, the front of a processing extension
• FIG. 8 illustrates, in perspective, the inside of a treatment extension
• FIG. 9 illustrates, in perspective, the back of a processing extension
• FIG. 10 shows, in perspective, the measurement block with a measuring extension in front of said measurement block and / or said processing block in the reference direction
• - Figure 1 1 shows, in perspective, the measurement block with a measuring extension behind said measurement block and / or said processing block in the reference direction;
• FIG. 12 shows, in perspective, the processing unit connected to a processing extension in front of said measurement block and / or said processing block in the reference direction;
• FIG. 13 shows, in perspective, the processing unit connected to a processing extension behind said measurement block and / or said processing block in the reference direction.
• the electronic release of the invention consists of a current measurement block 1 and an electronic processing block 2 of the current measurement.
• Such an electronic release integrates into an electrical line protection device, circuit breaker type, also having a breaking block.
• the measurement block 1 of current consists of a housing 6 enclosing sensors 9. It comprises a connection face 20 to the processing block 2, as well as two lateral faces 18, 19.
• the lateral faces 18, 19 may be perpendicular to the connecting face 20.
• this measurement block 1 is adapted to operate in a three-pole circuit breaker since it has three identical sections 3,4,5, each section being provided for a pole.
• Each section 3,4,5 contains a current measuring sensor 9, which consists of a Rogowski winding, and a current transformer (not visible).
• the sensor 9 and the transformer consist of parts of revolution, more precisely tori, arranged coaxially.
• the size of the sensor 9 varies according to the size of the circuit breaker.
• the current transformer is used to feed electronic cards 14 contained in the processing block 2 which will be described later.
• the sensor 9 and the transformer comprise wire outputs connected to a male connector 8 housed in a reception area 7 provided for this purpose and protruding from the housing 6.
• This zone 7 is centered on each section 3,4,5 of the measurement block 1, in a transverse plane passing through the axis of the sensor 9 and the transformer.
• Said measurement block 1 and said processing block 2 extend essentially along a reference direction X.
• This male connector 8 plugs into a female connector 13 provided for this purpose in the electrical treatment block 2 of the current measurement.
• the processing block 2 consists of a housing 15 having a connection face 1 1 to the measurement block 1, as well as two lateral faces 16, 17.
• the lateral faces 16, 17 may be perpendicular to the connection face 1 1.
• This housing 15 encloses a plurality of electronic boards 14, powered by the transformers of the measurement block 1, and processing the incoming signals from the sensors 9 of the measurement block 1.
• the treatment block 2 also comprises an intermediate lock 12, able to trigger the main lock of the circuit breaker (not shown), by order of an electronic card 14 in the case where it detects a fault (overvoltage, short circuit).
• This processing block 2 exists in two versions. The difference between these two versions is the number of electronic cards related to the functions of the circuit breaker.
• a first version includes basic functions
• a second version includes basic functions plus advanced functions, such as voltage measurement for power calculation and communication.
• this processing unit 2 is adapted to operate in a three-pole circuit breaker since it has three identical sections 3,4,5, each section being provided for a pole.
• Each section 3,4,5 contains a female connector 13 arranged opposite a male connector 8 of the measurement block 1.
• the housing 15 is perforated at the female connectors 13 to leave them accessible for connection with the male connectors 8.
• Each female connector 13 is directly attached to an electronic card 14 which therefore receives the current measurement information from the corresponding sensor 9 of the measuring block 1, which is fed via the corresponding transformer of the measuring block 1.
• the electrical connection of the two blocks 1, 2 is thus made by simply plugging the three male connectors 8 into the three female connectors 23, in a single direction of insertion, corresponding to the assembly direction of the blocks 1, 2 and perpendicular to the reference direction X.
• to electrically connect the measurement block 1 to the processing block 2 it is sufficient to turn the measurement block 1 according to the arrow on the right, then to bring the two blocks 1, 2 of so that the three male connectors 8 and 23 female plug.
• the treatment block 2 comprises two connection plugs 21, 22 accessible from the outside via a day made in the housing 15.
• connection plug of a first type 21 for accessing a particular function of the trigger. It is therefore possible to connect to this card from the outside.
• This plug can for example be used for an alarm function that reflects the state of the circuit breaker. When the current exceeds a certain threshold, the state changes and the user is informed.
• This connection plug of a first type 21 preferably comprises two connection points, and consists of a plug.
• connection plug of a second type 22 on which it is possible to connect an auxiliary. It may for example be an external neutral, that is to say a neutral conductor whose current we want to measure, but that we do not want to cut, unlike the three poles of the circuit breaker.
• This connection plug of a second type 22 preferably comprises five connection points used in the following manner: two points for a current transformer (for supplying the electronic cards), two points for a current sensor (for the current measurement), and an optional point for voltage measurement.
• This connection plug 22 consists of a plug.
• the treatment block 2 comprises:
• a plug of a second type 42 (see Figures 12 and 13), similar to the plug 22, on which it is possible to connect an auxiliary. It may for example be an external neutral, as explained above.
• these two connection plugs of a second type 22, 42 are used to add an internal neutral to the right or left of the electronic trigger, ie in front of or behind the electronic trigger, to obtain a four-pole trigger.
• a measuring extension 24 and a processing extension 25 are added on the right side of the measurement block 1 and / or of the treatment block 2, ie in front of said measurement block 1 and / or said processing block 2 in the reference direction X.
• These two extensions 24,25 form a new section 23 provided for the pole relative to the neutral.
• This section 23 is aligned with the other sections 3,4,5, and adjoins the section 5.
• This new section 23 comprises, like the other sections 3,4,5, a current measuring sensor 9 and a current transformer, as well as a female connector 13, a male connector 8, and an electronic card. It is therefore equipped in the same way as the other sections 3,4,5.
• the electronic trigger thus formed of the four sections 3,4,5,23, has changed from a three-pole format to a four-pole format with the neutral on the right, that is to say in front of said measurement block 1 and said block of treatment 2 according to the reference direction X, while maintaining the same tripolar base structure to which unipolar extensions 24,25 were added.
• a measuring extension 24 and a processing extension 25 are added on the left side of the measurement block 1 and the processing block 2, ie behind the said measurement block 1 and the said block of treatment 2 in the reference direction X.
• These two extensions 24,25 form a new section 23 provided for the relative pole to the neutral.
• This section 23 is aligned with the other sections 3,4,5, and abuts the section 3.
• This new section 23 comprises, like the other sections 3,4,5, a current measuring sensor 9 and a current transformer, as well as a female connector 13, a male connector 8, and an electronic card. It is therefore equipped in the same way as the other sections 3,4,5.
• the electronic trip unit thus formed of the four sections 23, 3,4,5, has changed from a three-pole format to a four-pole format with the neutral on the left, ie behind said measurement block 1 and said block of treatment 2 according to the reference direction X, while maintaining the same tripolar base structure to which unipolar extensions 24,25 were added.
• the neutral is positioned to the right or to the left, that is to say in front of or behind said measurement block 1 and said processing block 2 in the reference direction X, the information coming from the processing extension 25, in particular the measurement of the current and the measurement of the voltage are recovered via the second type proximal plug 42, 22 of the processing block 2.
• the processing extension 25 can measure the voltage of the neutral, by means of an additional electronic card added in the treatment extension 25, and from which extends a flexible conductive blade which touches the terminal at the output of the extension cable.
• This additional electronic card is therefore able to send the information concerning the neutral voltage to the processing block 2.
• the processing extension 25, better illustrated in FIGS. 7 to 9, consists of a housing comprising a connection face 41 to the measuring extension 24, as well as two lateral faces 31, 32.
• the lateral faces 31, 32 may be perpendicular to the connecting face 41.
• FIG 7 showing the front of the processing extension 25, are visible the female connector 13, and a piece of the associated electronic card 26.
• Each side face 30,31 comprises a day 32,33 through which leaves of different types escape.
• the first lateral face 30 includes a day 32 showing a connection plug of a first type 34, from which a connection plug of a second type 28 can escape.
• the second lateral face 31 has a day 33 from which a connection plug of a first type 27 and the connection plug of a second type 28 can escape.
• the plug 27 consists of a female plug with two connection points. It is connected to the electronic card 26 via a wired link 40 consisting of two son connected to the tracks of the electronic card. These tracks are connected to the plug 34 which consists of a plug with two connection points, fixed to the electronic card and accessible since the day 32 of the first lateral face 30.
• the plug 28 consists of a female plug with five connection points. It is connected to the current measurement electronic board 26 via a wired link 29a consisting of four wires connected on tracks of this card 26, and to an additional electronic circuit board (not shown) for measuring voltage via a wire link 29b consisting of in a wire connected on a track of this map.
• the threads are sufficiently flexible to pass the plug 28 through the day 32 to the right or through the day 33 to the left, that is to say to pass the plug 28 through the day 32 in front of or behind said block of measurement 1 and said processing block 2 in the reference direction X, depending on the position of the treatment extension 25 with respect to the processing block 2.
• the length of the wires of the wire links 40 and 29 is not necessarily representative of the reality in this figure 8.
• FIG. 12 shows the case of FIG. 4, with the neutral on the right, that is to say in front of said measurement block 1 and said processing block 2 in the reference direction X, the pieces being separated in order to illustrate the wired links 40,29.
• the first lateral face 16 of the treatment block 2 is found opposite the second lateral face 31 of the treatment extension 25.
• the first type of connection plug 21 on the side face 16 of the treatment block 2 is offset on the side face 30 of the extension processing 25, which now corresponds to the outer edge of the electronic trigger.
• the first type connection plug 27 of the treatment extension 25 escapes via the day 33 and is plugged into the first type connection plug 21 present on the lateral face 16 of the treatment block 2 Via the electronic card 26 and the wire link 40, the information can pass between the plug 21 and the plug 34.
• the first type plug 34 on the side face 30 of the extension deport the functionality of the plug connector of first type 21 of the processing block 2. This functionality is thus always accessible from outside the trigger.
• the trip unit is configured as three-pole or four-pole with the right-hand neutral, that is, in front of said measurement block 1 and said processing block 2 in the reference direction X, this functionality is still accessible.
• the second type connection plug 28 escapes via the day 33 and is plugged into the second type connection plug 22 present on the side face 16 of the treatment block 2.
• the current and neutral voltage of the extension 25 are thus transferred via the electronic card 26 and the wire connection 29, to the plug 22.
• FIG. 13 shows the case of FIG. 5, with the neutral on the left, ie behind said measurement block 1 and said processing block 2 in the reference direction X, the pieces being separated in order to illustrate the wired link 29.
• the second lateral face 17 of the treatment block 2 is found opposite the first lateral face 30 of the treatment extension 25.
• the second type connection plug 28 escapes via the day 32 and is plugged into the second type connector plug 42 on the side face 17 of the treatment block 2.
• the current and voltage information of the neutral of the extension 25 are thus transferred via the electronic card 26 and the wire link 29, to the plug 42.
• the first type connection plugs 27, 34 are unused for this four-pole configuration with the neutral on the left, ie behind said measurement block 1 and said processing block 2 in the reference direction X
• the plug 27 and its wire connection 40 are stored in the extension 25.
• the measuring extension 24 is illustrated more precisely in FIGS. 6a and 6b. It is fixed to the measurement block 1 by means of a support piece 35, or to the right, that is to say in front of said measurement block 1 and said processing block 2 in the reference direction X, as illustrated in FIG. 10, ie to the left, ie behind said measurement block 1 and said processing block 2 in the reference direction X, as illustrated in FIG. 1 1.
• This support piece 35 consists of a symmetrical part comprising a partition wall of the measuring block 1 with respect to the measuring extension 24.
• the separating wall is provided on both sides with hooking means for fixing on one side to the measuring block 1, and on the other side to the measuring extension 24. More precisely, in the upper part, two tabs 36,37 extend perpendicularly from the partition wall. In the lower part, two legs 38.39 extend perpendicularly of the partition wall. These tabs 36, 37, 38, 39 all have a notch in which a protruding return of the measuring block 1 and the measuring extension 24 can be seen.
• the tabs 37 and 39 are hooked to the measurement block 1, and the tabs 36 and 38 are hooked to the measuring extension 24.
• the tabs 36 and 38 are attached to the measuring block 1, and the tabs 37 and 39 are hooked to the measuring extension 24.
• the processing extension 25 is fixed to the measuring extension 24.
• two L-shaped tabs 43 visible in FIG. 7, extend from the connection face 41 of the treatment extension 25 towards the extension 24. These two tabs 43 are disposed on either side of the female connector 13 and are able to slide into two recesses 44 of corresponding shape provided for this purpose on either side of the male connector 8 of the measuring extension 24, as illustrated in FIG. 6a. These tabs 43 allow locking in translation of an extension relative to the other in two directions perpendicular to the interlocking direction of the tabs 43 in the recesses 44.

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• Breakers (AREA)
• Emergency Protection Circuit Devices (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=57906685

Family Applications (1)

Country Status (5)

Family Cites Families (7)

• 2016
  • 2016-07-29 FR FR1657428A patent/FR3054716B1/fr active Active
• 2017
  • 2017-02-09 EP EP17709130.3A patent/EP3300529B1/de active Active
  • 2017-02-09 CN CN201780035987.2A patent/CN109314019B/zh active Active
  • 2017-02-09 WO PCT/FR2017/050291 patent/WO2018020086A1/fr not_active Ceased
  • 2017-02-09 JP JP2019504847A patent/JP6916863B2/ja active Active

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