EP3300531B1 - Déclencheur électronique pour appareil électrique de protection de ligne - Google Patents

Déclencheur électronique pour appareil électrique de protection de ligne Download PDF

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Publication number
EP3300531B1
EP3300531B1 EP17709129.5A EP17709129A EP3300531B1 EP 3300531 B1 EP3300531 B1 EP 3300531B1 EP 17709129 A EP17709129 A EP 17709129A EP 3300531 B1 EP3300531 B1 EP 3300531B1
Authority
EP
European Patent Office
Prior art keywords
tripping device
unit
electronic tripping
male connector
tab
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
EP17709129.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3300531A1 (fr
Inventor
Gilles Stocker
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP3300531A1 publication Critical patent/EP3300531A1/fr
Application granted granted Critical
Publication of EP3300531B1 publication Critical patent/EP3300531B1/fr
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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
    • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers

Definitions

  • the invention relates to an electronic trip unit for a multipolar electrical line protection device, of the circuit breaker type.
  • an electronic trip unit detects overload currents and short-circuit currents to cause the circuit breaker contacts to open.
  • an electronic trip unit is that it can have a wide range of settings, in particular the trip level and the trip time. It generally consists of an actuator controlled by an electronic card which monitors the current flowing through the circuit breaker via sensors.
  • the electronic trip unit is associated with an interrupting unit containing in particular the interrupting chamber, the fixed and movable contacts, and the lock, in order to form the circuit breaker.
  • An electronic trip unit conventionally comprises at least one current measurement unit having current sensors and an electrical processing unit for the current measurement having an electronic card and an actuator.
  • the wires coming out of the sensors consist of simply enamelled wires. It is customary to add to them a wire of larger section and insulated by a sheath, the end of which can be inserted into a connector provided for this purpose. The connector is then connected by other wires to the electronic board, or is directly attached to the electronic board.
  • the electrical connection between the measuring unit and the processing unit is made via flexible wires.
  • This type of electrical connection is therefore fragile, especially when handling the blocks when assembling the release. There are risks of cutting the wires, and risks of jamming the wires when connecting the two blocks.
  • the object of the present invention is to overcome the various drawbacks set out above, by means of an electronic trip device offering a simplified and rapid electrical and mechanical connection, without risk of deterioration of the electrical connections, and with good mechanical strength.
  • the electronic trip device conventionally comprises a current measurement unit and an electrical processing unit for the current measurement.
  • the main idea of this invention is to assemble the measuring and processing units in a single gesture, by a translation, while ensuring simultaneous connection at the electrical and mechanical level.
  • the assembly of the trigger is thus very simple. It is not necessary to combine different movements to assemble the blocks, a single movement in a single connection direction is sufficient to electrically connect them, position them relatively and maintain them in position before joining them together.
  • the invention also relates to an electrical line protection device, of the circuit breaker type, comprising a cut-off unit and an electronic trip unit as described above.
  • the electronic trip unit of the invention consists of a current measurement unit 1 and an electronic current measurement processing unit 2. Such an electronic trip unit is integrated into an electrical line protection device, of the circuit breaker type, also comprising a cut-off unit.
  • the current measuring unit 1 consists of a housing 6 containing sensors 29.
  • this measuring unit 1 is suitable for operating on a three-pole circuit breaker since it has three sections 3, 4, 5 which are identical, each section being provided for one pole.
  • Each section 3, 4, 5 contains a current measurement sensor 29, which consists of a Rogowski winding, and a current transformer 9.
  • the sensor 29 and the transformer 9 consist of parts of revolution, more precisely of toroids, arranged coaxially, as is best seen in figure 6 .
  • the sensor 29 consists of a helical winding of wire having two electrical wire outputs 13,14, in particular visible to figures 2 and 3 .
  • the current transformer 9 is used to supply the electronic cards 33 contained in the processing unit 2 which will be described later.
  • This transformer 9 consists of a winding made around the conductor 30, and also has two wire outputs 11, 12 electrical.
  • wired outputs 11,12,13,14 are connected to a male connector 8 housed in a reception area 7 provided for this purpose and projecting from the box 6.
  • This area 7 is centered on each section 3,4,5 of the measuring block 1, in a transverse plane passing through the axis of the sensor 29 and of the transformer 9, so that the wire outputs 14,12 of the sensor 29 and of the transformer 9 come on the right side of the male connector 8, and the wired outputs 13,11 of the sensor 29 and of the transformer 9 come on the left side of the male connector 8.
  • This specific arrangement therefore makes it possible to dissociate the wired outputs 11,12,13,14 into two groups: the right group 12 , 14, and the left group 11.13.
  • the reception area 7 has two pads 15,16, located on the left and on the left side. right of the male connector 8.
  • one 12 of the two wire outputs 12,14 of the right group is guided so as to run on the outside of the right pad 16, while the other wire output4 of the right group travels from the inner side of the right pad 16, that is to say between the right pad 16 and the male connector 8.
  • one 11 of the two wired outputs 11, 13 of the left group is guided so as to run on the outside side of the left pad 15, while the other wired output 13 of the left group runs on the interior side of the left pad 15, i.e. between left pad 15 and male connector 8.
  • the wired outputs 13,14 of the sensor 29 run on the inner sides of the right and left 16,15 pads, while the wired outputs 11,12 of the transformer 9 run on the outer sides of the right and 16.15 pads. left.
  • the two wire outputs 11,12 of the transformer 9 are wound around two upper pins 19,20, left and right, while the two wire outputs 13,14 of the sensor 29 are wound around two lower pins 21,22 , left and right.
  • the wire outputs 11,12,13,14 are soldered to the pins 19,20,21,22 by known welding techniques.
  • the male connector 8 consists of a support 35 and pins 19,20,21,22.
  • the pins 19,20,21,22 pass through the support 35, and thus each have two free ends on either side of the support 35.
  • On the figures 1 and 2 is visible a first face 17 of the support 35, from which extend the four pins 19,20,21,22.
  • a protective cover 34 is fixed to the section 3, 4, 5 so as to protect the sensor 29, the transformer 9, and the first face 17 of the support 35 of the male connector 8, as well as the four electrical connections.
  • the right 5 and left 3 sections are equipped with the protective cover 34, while the central section 4 is "bare", therefore without a protective cover 34, in order to illustrate the positioning of the sensor 29 and of the connector male 8.
  • the figure 5 represents the reverse of the measuring block 1.
  • a second face 18 of the support 35 of the male connector 8 is visible.
  • the four pins 19,20,21,22 extend from this second face 18.
  • a peripheral cover 24 surrounds the male connector 8, extending in a direction parallel to that of the pins 19,20,21,22, in order to to protect the latter during transport of the measuring unit 1 and when plugging the pins 19,20,21,22 into a female connector 23 provided for this purpose in the electrical processing unit 2 of the current measurement such as 'illustrated in figure 4 .
  • the processing unit 2 consists of a housing 32 enclosing a plurality of electronic cards 33, supplied by the transformers 29 of the measurement unit 1, and processing the incoming signals coming from the sensors 9 of the measurement unit 1.
  • the control unit processing 2 also includes an intermediate lock 28, able to trigger the main lock of the circuit breaker (not shown), on the order of an electronic card 33 in the event that it detects a fault (overvoltage, short circuit).
  • This processing unit 2 provides three female connectors 23, arranged opposite the male connectors 8 of the measuring unit 1.
  • the housing 32 is perforated at the level of the female connectors 23 in order to leave them accessible for connection with the male connectors 8.
  • Each female connector 23 consists of a support in which four holes are made which can accommodate the four pins 19,20,21,22.
  • Each female connector 23 is directly attached to an electronic card 33 which therefore receives the current measurement information coming from the corresponding sensor 29 of the measuring unit 1, and which are supplied via the corresponding transformer 9 of the measuring unit 1.
  • the peripheral cover 24 thus makes it possible to protect the junction between the two male 8 and female 23 connectors, and to prevent any dust from infiltrating.
  • the electrical connection of the two blocks 1,2 is therefore effected by simply plugging the three male connectors 8 into the three female connectors 23, in a single plugging direction X, corresponding to the connection direction of the blocks 1,2.
  • tabs 25 extending from the housing 32 of the processing unit 2 are inserted into openings 36 provided for this purpose in the housing 6 of the measuring unit 1.
  • This mechanical connection between the two blocks 1,2 is therefore also carried out in the direction X.
  • An opening 36 is provided between two adjacent sections of the measuring unit 1, and a tab 25 is provided between two female connectors 23.
  • each tab 25 has a T-section, with a central section 26 of small width, terminating in an end 27 of large width.
  • Each opening 36 consists of a cutout made in the housing 6 of the measuring unit 1, at a peripheral zone.
  • the cutout 36 starts from the periphery of the housing 6 with a first part 37 of great width, then is extended by a second part 38 of smaller width, just greater than the width of the central section 26 and much less than the width of the end 27 of tab 25.
  • the central section 26 of the tab 25 is first inserted into the first part 38 of the cutout.
  • the latter is only used to guide one block relative to the other, in order to put them in position for plugging in connectors 8,23.
  • the central section 26 of the tab 25 is inserted into the second part 38 of the cutout 36, the width of which is barely greater than that of the central section 26 of the tab 25 so that the tab 25 can slip into this cutout 36 with a small clearance, until it comes into abutment against the bottom 39 of the cutout 36, which also corresponds to the end of travel of the pins 19,20,21,22 of the male connector 8 in the holes of the female connector 23.
  • the two blocks 1, 2 are then connected electrically and mechanically, simultaneously, in a single connection direction X, and in a single gesture on the part of the operator.
  • the processing unit 2 Given the dimensioning of the second part 37 of the opening 36 relative to the width of the central section 26 of the tab 25, the processing unit 2 is blocked in the Y direction perpendicular to X.
  • the treatment unit 2 is blocked in the Z direction perpendicular to X.
  • the width of the different parts is marked with respect to the Y direction.
  • the tab 25 and the opening 36 could very well be replaced by a connection of the dovetail type, or any other type of mechanical connection.
  • the figure 6 illustrates the two blocks 1, 2 connected to one another, preferably nested one inside the other.
  • the two blocks 1, 2 are joined more firmly to one another during their assembly with the other parts of the circuit breaker.
  • the measuring unit 1 When assembling a circuit breaker, the measuring unit 1 is associated with the contact block (not shown), then the processing unit 2 is added to this sub-assembly before putting everything in place in an enclosure. final. This positioning is important for the interaction between the intermediate lock 28 of the processing unit 2 with the main lock of the contact block. It has two stages.
  • the first step consists of inserting the treatment block 2 into a fork with two arms located in the extension of two flanges making up the structure of the main lock of the contact block.
  • the processing unit 2 is provided with two recesses 41 arranged on either side of the intermediate lock 28, and into which penetrate the two arms of the fork, as illustrated in figures 4 and 6 .
  • the second step consists in inserting the contact block / processing block sub-assembly 2 into the final casing constituting the base of the circuit breaker. To do this, two ears 40 extending from the treatment unit 2 are plugged into two cylinders extending from the final casing. This plugging in makes it possible to guarantee the non-disconnection of the sensors 9 from the electronic boards 33, that is to say the non-disconnection of the male 8 and female 23 connectors, as well as the non-disconnection of the main lock from the lock. intermediate 28, that is to say the non-disconnection of the fork from the recesses 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Transformers For Measuring Instruments (AREA)
EP17709129.5A 2016-07-29 2017-02-09 Déclencheur électronique pour appareil électrique de protection de ligne Active EP3300531B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1657432A FR3054717B1 (fr) 2016-07-29 2016-07-29 Declencheur electronique pour appareil electrique de protection de ligne
PCT/FR2017/050290 WO2018020085A1 (fr) 2016-07-29 2017-02-09 Déclencheur électronique pour appareil électrique de protection de ligne

Publications (2)

Publication Number Publication Date
EP3300531A1 EP3300531A1 (fr) 2018-04-04
EP3300531B1 true EP3300531B1 (fr) 2021-04-07

Family

ID=57750047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17709129.5A Active EP3300531B1 (fr) 2016-07-29 2017-02-09 Déclencheur électronique pour appareil électrique de protection de ligne

Country Status (5)

Country Link
EP (1) EP3300531B1 (ja)
JP (1) JP7022738B2 (ja)
CN (1) CN109478483B (ja)
FR (1) FR3054717B1 (ja)
WO (1) WO2018020085A1 (ja)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6850135B1 (en) * 2003-08-01 2005-02-01 Gaton Corporation Circuit breaker trip unit employing a reset overtravel compensating rotary trip lever
CN102436981B (zh) * 2011-10-11 2014-11-26 常熟开关制造有限公司(原常熟开关厂） 一种断路器
US20140124262A1 (en) * 2012-11-02 2014-05-08 William H. Martin Modular overload relay assembly with preformed coil interface
CN103065883A (zh) * 2013-01-09 2013-04-24 常州市吉士电器有限公司 一种智能高压直流继电器
US9362075B2 (en) * 2013-12-03 2016-06-07 General Electric Company Cover assembly for circuit breaker, circuit breaker having the same, and method
KR101522272B1 (ko) * 2014-06-30 2015-05-21 엘에스산전 주식회사 회로 차단기의 중성 극 변류기 모듈 및 중성 극 전류 검출 장치

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
CN109478483A (zh) 2019-03-15
CN109478483B (zh) 2021-05-18
EP3300531A1 (fr) 2018-04-04
JP2019522333A (ja) 2019-08-08
WO2018020085A1 (fr) 2018-02-01
JP7022738B2 (ja) 2022-02-18
FR3054717B1 (fr) 2018-09-07
FR3054717A1 (fr) 2018-02-02

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