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EP0926695A1 - Elektrische Anschlussvorrichtung eines Differentialmoduls an einem Schutzschalter oder dergleichen und ein mit dieser Vorrichtung ausgerüsteter Differentialmodul - Google Patents

Elektrische Anschlussvorrichtung eines Differentialmoduls an einem Schutzschalter oder dergleichen und ein mit dieser Vorrichtung ausgerüsteter Differentialmodul Download PDF

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Publication number
EP0926695A1
EP0926695A1 EP98410139A EP98410139A EP0926695A1 EP 0926695 A1 EP0926695 A1 EP 0926695A1 EP 98410139 A EP98410139 A EP 98410139A EP 98410139 A EP98410139 A EP 98410139A EP 0926695 A1 EP0926695 A1 EP 0926695A1
Authority
EP
European Patent Office
Prior art keywords
conductors
conductor
torus
differential unit
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98410139A
Other languages
English (en)
French (fr)
Other versions
EP0926695B1 (de
Inventor
Patrick Guillon
Claude Burnot
Bernard Lebeau
Jean Dornier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0926695A1 publication Critical patent/EP0926695A1/de
Application granted granted Critical
Publication of EP0926695B1 publication Critical patent/EP0926695B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • H01H2083/148—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer with primary windings formed of rigid copper conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers

Definitions

  • the present invention relates to an electrical connection device for a differential unit on a circuit breaker or the like, comprising a certain number of conductors intended to connect electrically the circuit breaker's output terminals to the differential block's output terminals, said conductors passing through the torus.
  • One of the solutions consists in using sheathed flexible braids each connecting one of the output terminals of the differential block at one of the terminals of the circuit breaker via a semi-rigid conductor in the form of a crank in enamelled wires crossing the toroid, the braids and conductors being connected to the upper part of the torus.
  • these semi-rigid conductors due to their shape in are particularly bulky, and require that a certain amount be reserved for them volume intended to allow their manipulation.
  • the diameter of the enameled wires constituting said conductor is generally limited to 4.5 mm, because increasing this diameter would considerably increase the size of the torus.
  • Another solution consists, to make this connection of a differential block of caliber high to a circuit breaker, to provide sheathed braids of large section directly connecting the circuit breaker output terminals to those of the differential unit, after passage through the toroid.
  • Gold in this solution, it is necessary to provide a toroid window of enlarged dimension.
  • Another solution consists in providing strips extending under the circuit breaker and connecting the circuit breaker to the differential unit by means of sheathed braids crossing the toroid and connected to the strips above the torus.
  • the disadvantage of this solution is that the space under the circuit breaker is important.
  • the connection device considerably encumbers the upper part of the block situated above the toroid.
  • the present invention solves these problems and proposes a device for connecting a block differential on a circuit breaker, and a differential block comprising it, allowing a high caliber differential block in a small footprint and a method of setting work of this device.
  • the present invention relates to a device of the kind previously mentioned, this device being characterized in that at least one of the aforementioned conductors is a rigid conductor with a solid core, said conductor having a first end intended to be electrically connected to the corresponding terminal of the circuit breaker and a second end welded to end on a contact pad mechanically and electrically connected to the corresponding output terminal of the differential unit.
  • the aforementioned conductor (s) is (are) welded at the end on one, called the first, of the ends of one (respectively of several) conductor (s) intermediate (s) crossing the torus, the second end of which is electrically connected and mechanically at the corresponding range.
  • the intermediate conductor (s) is (are) welded at the end on the beach (s).
  • the second end of the intermediate conductor (s) is in one piece with the range (s).
  • the aforementioned conductor (s) and / or intermediate conductors is (are) single strand (s).
  • the aforementioned conductor (s) and / or intermediate conductor (s) is (are) copper.
  • the aforementioned conductor (s) and / or conductors intermediaries have a circular section.
  • the conductors and / or intermediate conductors are shaped so that the cross-section of all the combined conductors is substantially circular, this in order to minimize their bulk inside the torus.
  • the devices being of the bipolar type, the conductors and possibly intermediate conductors are two in number and each have a semi-circular section.
  • the devices being of the four-pole type, the conductors and possibly the intermediate conductors are four in number, each of conductors with a quadrant section.
  • the conductors or conductors intermediate (s) extend in a straight line up to the ranges.
  • the second end of the conductor (s) and / or of the conductors intermediates is welded-soldered on the corresponding area (s).
  • the conductor (s) or conductor (s) intermediate (s) is (are) folded four times at right angles.
  • the aforementioned conductor (s) and / or intermediate conductor (s) is (are) covered with an epoxy-type insulating coating.
  • the invention also relates to a method of implementing a device such as previously described, consisting in threading the torus around the second end (s) of the conductor (s), then sliding said torus along said conductors in one direction opposite to said ends, then to carry out the butt welding of said ends on the beaches.
  • the invention also relates to a differential unit equipped with a device comprising the previously mentioned characteristics taken alone or in combination.
  • the differential unit comprising a finger trigger extending projecting from the face of said block intended to be attached to the circuit breaker, it further comprises a protective finger extending substantially parallel said trigger finger over a length slightly greater than that of said finger and intended to absorb shocks instead of the trigger finger.
  • a differential block B intended to be associated with a circuit breaker (not shown) by means of a connection device E according to the invention, to ensure the protection of an electrical installation supplied by the network electric, said block having the function of ensuring the detection of earth fault currents.
  • the mechanism M of the differential unit B is intended to be housed in a housing comprising a base 1 and a front face 2, and which can receive one or more auxiliaries 3,4 as will be explained later. It mainly comprises a differential current transformer T consisting of a toroid 5, primary conductors 6 to 9, formed by the active conductors of the installation and secondary windings (not shown), at the terminals of which a signal is established. differential fault when a fault occurs in the primary conductors.
  • This secondary winding is connected to a triggering means such as a high-sensitivity relay (not shown), said relay ensuring triggering by activating a trigger finger 10 (fig. 2) located on a side face of the block, when the secondary signal exceeds a predetermined threshold.
  • a trigger finger 10 (fig. 2) located on a side face of the block, when the secondary signal exceeds a predetermined threshold.
  • This tripping finger 10 is mechanically connected to the tripping mechanism of the circuit breaker in the associated position of the two devices, so as to ensure the triggering of the lock of a breaking device protecting the circuit when this secondary signal exceeds a predetermined threshold.
  • This differential block B is of the four-pole type, and comprises at its lower part, four terminals 11 to 14 electrically connected to the active conductors 6 to 9 of the installation, which are connected to the four terminals belonging to the circuit breaker and located at the bottom of its housing, by means of a connection device E according to the invention.
  • This device E comprises, for each of the terminals 11 to 14 of the block, a rigid conductor made of copper 19 having a diameter of 6 mm, said conductor 19 being bent four times substantially at right angles.
  • This conductor 19 has at one of its ends 19a a flat 20 able to be fixed in one of the terminals of the circuit breaker, and is intended to be connected electrically by its opposite end 19b, at one of the terminals 11 to 14 of the block differential. It can be seen in particular in FIG.
  • each conductor 19 comprises a first connection part a extending parallel to the lateral faces 21 of housings, a second part b perpendicular to the first extending parallel to the underside 22 of the housings and the rail, a third part c extending substantially perpendicular to the second b along the torus 5 substantially parallel to the faces side 21 of the block, a fourth part d substantially perpendicular to the third c and extending parallel to the upper part 24, 25 of the differential block and of the torus 5, and a fifth part e substantially perpendicular to the fourth d, and crossing the torus 5 to be fixed by soldering at its free end on a connection pad 26 to 29 of the corresponding terminal of the block.
  • auxiliaries 3,4 are fixed to the housing B by snap-fastening and can perform several functions, for example the signal differential fault, remote opening, leakage current signaling.
  • auxiliaries 3,4 are simply mounted in a translational movement (fig. 3a) after having removed the shutters 30, 31 with a rotational movement using a screwdriver.
  • the trigger finger 10 projects perpendicular to the abutment face 21 of the differential unit, which makes it exposed to shocks which may be caused for example by a fall. These shocks towards the trigger finger 10 can cause a malfunction of said finger 10 and therefore hinder the normal operation of the mechanism.
  • differential blocks B in accordance with the invention due to the use of rigid cables 19, the devices are relatively heavy and the combination of the two devices is performed in most cases automatically. As a result, when association or in the event of a fall or shock, the trigger finger is still more exposed to receiving high intensity shocks.
  • the differential block B has on its face 21 adjoining the circuit breaker, a protective finger 32 extending parallel to the tripping finger 10 close to the latter, and intended to absorb the shocks exerted by direction of release finger 10.
  • the method of welding the conductors 6.8 on tracks 26 to 29, as illustrated in FIG. 4, is as follows: The torus 5 is first of all displaced in translation according to arrow A. Then, the clamps of tightening 33 ensuring the maintenance of the connections, an electrode 34 is moved in the direction of the pads 26, 29 and applied to the face f of the pads opposite to the core 5, so as to ensure the soldering of the end of the conductor on the pad coppered in the Y axis of the torus 5.
  • the use of a phosphor soldering butterfly improves the efficiency of the weld (better resistance to tearing).
  • the aforementioned conductor (s) is (are) soldered at the end on one 36a, called the first, of the ends of one (respectively of several) intermediate conductor (s) 36 passing through the torus (T) the second end of which 36b is electrically and mechanically connected to the corresponding range 26 to 29.
  • This embodiment in addition to the advantages already described in the embodiment described above, reduces even more the space above the torus.
  • the process for implementing the corresponding device is as follows. The torus is threaded around the conductor (s) intermediate (s) 36 secured to the pads, by sliding the torus along the conductors intermediates 36 in the direction of ranges 26 to 29, then the end welding of the conductors on the intermediate conductors 36.
  • the intermediate conductor (s) 36 is (are) butt welded on the beach (s).
  • the second end 36b of the intermediate conductor (s) 36 is in one piece with the range (s).
  • the primary conductors 6 to 9 made of rigid copper wire, with a diameter 6 mm, are advantageously coated with an epoxy type insulator for example. Thanks to the invention, therefore, a differential block B having a high caliber and small footprint. It is thus possible to produce a range of differential blocks Auxiliaries whose caliber can reach 125A without increasing the bulk compared to to the blocks currently in use. This rigidity of the connections allows rapid association and simple with the circuit breaker making the circuit breaker-differential assembly more compact, optimizing the connection of devices on the bottom rail.
  • epoxy coating of the conductors by depositing a paint in powder, will insulate the conductors from each other and help optimize the inner window of the torus.
  • the invention makes it possible to optimize the overall dimensions of the differential chain as much as possible. along the axis of the rail and thus achieve a range of 125A all sensitivities to own current including 30mA, in a small footprint, for example in a size of 99mm wide.
  • This type of connection minimizes the dimensions along the Y axis by eliminating the operations of bending the primaries after passing through the torus.
  • This bond also reduces the volume along the X and Z axes by the density of copper passed through the torus window.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP19980410139 1997-12-18 1998-12-08 Differentialmoduls und elektrische Anschlussvorrichtung des Differentialmoduls an einem Schutzschalter Expired - Lifetime EP0926695B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9716422 1997-12-18
FR9716422A FR2772979B1 (fr) 1997-12-18 1997-12-18 Dispositif de raccordement electrique d'un bloc differentiel sur un disjoncteur ou analogue et bloc differentiel equipe d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP0926695A1 true EP0926695A1 (de) 1999-06-30
EP0926695B1 EP0926695B1 (de) 2006-08-30

Family

ID=9515059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980410139 Expired - Lifetime EP0926695B1 (de) 1997-12-18 1998-12-08 Differentialmoduls und elektrische Anschlussvorrichtung des Differentialmoduls an einem Schutzschalter

Country Status (12)

Country Link
EP (1) EP0926695B1 (de)
CN (1) CN1202544C (de)
AR (1) AR014141A1 (de)
BR (1) BR9805417B1 (de)
DE (1) DE69835730T2 (de)
EA (1) EA002287B1 (de)
EG (1) EG21099A (de)
ES (1) ES2268758T3 (de)
FR (1) FR2772979B1 (de)
ID (1) ID21589A (de)
TR (1) TR199802642A2 (de)
ZA (1) ZA9811497B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1450440A1 (de) * 2003-02-21 2004-08-25 Hager Electro S.A.S. Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul
EP1710824A1 (de) * 2005-04-07 2006-10-11 Condor-Werke Gebr. Frede GmbH & Co. KG Fehlerstrom-Schutzschalter
FR2902924A1 (fr) * 2006-06-26 2007-12-28 Schneider Electric Ind Sas Appareil electrique modulaire assurant au moins deux fonctions electriques tel un disjoncteur differentiel.
CN108574160A (zh) * 2018-06-01 2018-09-25 浙江中凯科技股份有限公司 一种控制与保护开关电器的导电装置
EP3470853A1 (de) * 2017-10-16 2019-04-17 Schneider Electric Industries SAS Strommessvorrichtung, herstellungsverfahren, schutzmodul und fehlerstromschutzschalter, der eine solche strommessvorrichtung nutzt

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105474347B (zh) * 2014-02-17 2017-12-12 富士电机机器制御株式会社 漏电检测单元和漏电断路器
FR3069718B1 (fr) * 2017-07-25 2019-08-09 Schneider Electric Industries Sas Appareil de protection electrique differentielle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581264A1 (fr) * 1985-04-26 1986-10-31 Etude Realisa Disjoncteurs Transformateur de sommation et processus de sa fabrication
EP0611224A1 (de) * 1993-02-09 1994-08-17 Schneider Electric Sa Differentialschutzeinheit mit auf Funktion testbarer Untereinheit
EP0806784A2 (de) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Schaltgerät mit bewegbaren Verbindungs-Leitungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581264A1 (fr) * 1985-04-26 1986-10-31 Etude Realisa Disjoncteurs Transformateur de sommation et processus de sa fabrication
EP0611224A1 (de) * 1993-02-09 1994-08-17 Schneider Electric Sa Differentialschutzeinheit mit auf Funktion testbarer Untereinheit
EP0806784A2 (de) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Schaltgerät mit bewegbaren Verbindungs-Leitungen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1450440A1 (de) * 2003-02-21 2004-08-25 Hager Electro S.A.S. Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul
EP1710824A1 (de) * 2005-04-07 2006-10-11 Condor-Werke Gebr. Frede GmbH & Co. KG Fehlerstrom-Schutzschalter
FR2902924A1 (fr) * 2006-06-26 2007-12-28 Schneider Electric Ind Sas Appareil electrique modulaire assurant au moins deux fonctions electriques tel un disjoncteur differentiel.
EP1873808A1 (de) * 2006-06-26 2008-01-02 Schneider Electric Industries Sas Elektrisches Gerät in Modulbauweise, das mindestens zwei elektrische Funktionen sicherstellt, wie einen Fehlerstromschalter
EP3470853A1 (de) * 2017-10-16 2019-04-17 Schneider Electric Industries SAS Strommessvorrichtung, herstellungsverfahren, schutzmodul und fehlerstromschutzschalter, der eine solche strommessvorrichtung nutzt
FR3072462A1 (fr) * 2017-10-16 2019-04-19 Schneider Electric Industries Sas Dispositif de mesure de courant, procede de fabrication, module de protection et disjoncteur differentiel utilisant un tel dispositif de mesure de courant
US10712372B2 (en) 2017-10-16 2020-07-14 Schneider Electric Industries Sas Current measurement device, manufacturing method, protection module and differential circuit breaker including such a device
CN108574160A (zh) * 2018-06-01 2018-09-25 浙江中凯科技股份有限公司 一种控制与保护开关电器的导电装置

Also Published As

Publication number Publication date
DE69835730D1 (de) 2006-10-12
DE69835730T2 (de) 2007-09-06
FR2772979B1 (fr) 2002-09-20
ID21589A (id) 1999-06-24
EA199801021A3 (ru) 1999-12-29
BR9805417B1 (pt) 2012-10-02
EG21099A (en) 2000-11-29
CN1224228A (zh) 1999-07-28
ES2268758T3 (es) 2007-03-16
BR9805417A (pt) 1999-11-23
TR199802642A3 (tr) 1999-10-21
EA002287B1 (ru) 2002-02-28
TR199802642A2 (xx) 1999-10-21
FR2772979A1 (fr) 1999-06-25
EA199801021A2 (ru) 1999-08-26
CN1202544C (zh) 2005-05-18
ZA9811497B (en) 1999-06-18
EP0926695B1 (de) 2006-08-30
AR014141A1 (es) 2001-02-07

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