EP0926695B1 - Bloc différentiel et dispositif de raccordement électrique dudit bloc différentiel sur un disjoncteur - Google Patents

Bloc différentiel et dispositif de raccordement électrique dudit bloc différentiel sur un disjoncteur Download PDF

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Publication number
EP0926695B1
EP0926695B1 EP19980410139 EP98410139A EP0926695B1 EP 0926695 B1 EP0926695 B1 EP 0926695B1 EP 19980410139 EP19980410139 EP 19980410139 EP 98410139 A EP98410139 A EP 98410139A EP 0926695 B1 EP0926695 B1 EP 0926695B1
Authority
EP
European Patent Office
Prior art keywords
differential unit
conductors
conductor
unit according
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.)
Expired - Lifetime
Application number
EP19980410139
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0926695A1 (fr
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 Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0926695A1 publication Critical patent/EP0926695A1/fr
Application granted granted Critical
Publication of EP0926695B1 publication Critical patent/EP0926695B1/fr
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 a differential block and an electrical connection device of a differential block on a circuit breaker or the like, comprising a number of conductors for electrically connecting the output terminals of the circuit breaker to the output terminals of the differential block, 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 to one of the terminals of the circuit breaker via a semi-rigid conductor in the form of crank enamelled wires. passing through the torus, the braids and conductors being connected to the upper part of the torus.
  • these semi-rigid conductors because of their crank form, are particularly bulky, and require that they reserve a certain volume to allow their handling.
  • the diameter of the enamelled son constituting said conductor is generally limited to 4.5 mm, because increase this diameter would lead to greatly increase the size of the torus.
  • Another solution consists in making this connection of a high-caliber differential block to a circuit breaker, to provide sheathed braids of high section directly connecting the output terminals of the circuit breaker to those of the differential block, after passing through the torus.
  • it is necessary to provide a torus window of enlarged size.
  • Another solution consists in providing strips extending under the circuit breaker and connecting the circuit breaker to the differential block by means of sheathed braids passing through the torus and connected to the strips above the torus.
  • the disadvantage of this solution is that the size under the circuit breaker is important.
  • connection device considerably encumbers the upper part of the block located above the torus.
  • each of the terminals of the differential block and of the circuit breaker are directly connected by a semi-rigid cable passing through the toroid and one end of which is bent and then flattened so as to be soldered flat on a strip associated with one of the terminals of the differential block.
  • This solution results in a large bulk at the connection area at the terminals of the differential block.
  • This solution reserved for small calibres, can not be extended to large calibres, because this would lead to an even larger footprint in this area.
  • EP 0 611 224 discloses a differential block comprising a device for connecting the terminals of said block across a circuit breaker, comprising a number of conductors for electrically connecting the output terminals of the circuit breaker to the output terminals of the differential block, said conductors passing through the torus, at least one of the aforementioned conductors being a solid core rigid conductor.
  • the document FR 2,581,264 describes a summing transformer comprising primary conductors passing through the toroid and whose ends are folded so as to be soldered flat on the ranges of the terminals of the circuit-breaker, hence a large bulk at the level of the connection area.
  • the present invention solves these problems and proposes a device for connecting a differential block on a circuit breaker, and a differential block comprising it, making it possible to produce a high-caliber differential block in a small space and a process for carrying it out. of this device.
  • the subject of the present invention is a device according to claim 1.
  • the aforesaid conductor (s) is (are) butt welded to one, said first, of the ends of one (or more) intermediate conductor (s). (s) crossing the torus whose second end is electrically and mechanically connected to the corresponding range.
  • the intermediate conductor (s) is (are) welded (s) end on the (the) range (s).
  • the second end of the intermediate conductor (s) is in one piece with the (the) beaches.
  • the above-mentioned conductor (s) and / or intermediate conductors are (are) single strand (s).
  • the aforementioned conductor (s) and / or conductor (s) is (are) copper.
  • the aforementioned conductor (s) and / or intermediate conductors have a circular section.
  • the conductors and / or intermediate conductors are shaped so that the section of the set of conductors together is substantially circular, in order to minimize their bulk within the torus.
  • the devices being of the bipolar type, the conductors and possibly intermediate conductors are two in number and each have a semicircular section.
  • the devices being of the four-pole type, the conductors and possibly the intermediate conductors are four in number, each of the conductors having a quarter-circle section.
  • the conductors or intermediate conductors (s) extend in a rectilinear way to the beaches.
  • the second end of (the) conductor (s) and / or intermediate conductors is soldered-brazed to the corresponding (the) ranges (s).
  • the conductor (s) or conductor (s) intermediate (s) is (are) folded (s) four times at right angles.
  • the above-mentioned conductor (s) and / or intermediate conductor (s) is (are) covered with an epoxy-type insulating coating.
  • the invention also relates to a method for connecting a differential block to a circuit breaker, consisting of threading the torus around the second end (s) of the conductors (s), then to slide said toroid along said conductors in a direction opposite to said ends, and then to perform the butt welding of said ends on the beaches.
  • the differential unit comprising a trigger finger protruding from the face of said block intended to be contiguous to the circuit breaker, it further comprises a protective finger extending substantially parallel to said tripping finger on a length slightly greater than that of said finger and intended to collect shocks instead of the trigger finger.
  • FIG. 1 shows 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, for the protection of an electrical installation supplied by the network. electrical, said block having the function of ensuring the detection of fault currents to earth.
  • the mechanism M of the differential block B is intended to be housed in a housing comprising a base 1 and a front face 2, and can receive one or more auxiliaries 3,4 as will be explained later. It mainly comprises a differential intensity transformer T consisting of a torus 5, primary conductors 6 to 9, formed by the active conductors of the installation and secondary windings (not shown), across 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 providing the trigger by activating a triggering finger 10 (FIG. 2) located on a lateral face of the block, when the secondary signal exceeds a predetermined threshold.
  • a triggering finger 10 (FIG. 2) located on a lateral face of the block, when the secondary signal exceeds a predetermined threshold.
  • This trigger finger 10 is mechanically connected to the tripping mechanism of the circuit breaker associated position of the two devices, so as to ensure the release of the lock of a cutoff device protecting the circuit when the secondary signal exceeds a predetermined threshold.
  • This differential block B is of the four-pole type, and has 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 the 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 copper conductor 19 having a diameter of 6 mm, said conductor 19 being bent four times substantially at right angles.
  • This conductor 19 comprises at one 19a of its ends a flattenable portion 20 adapted to be fixed in one of the terminals of the circuit breaker, and is intended to be electrically connected by its opposite end 19b, to one of the terminals 11 to 14. of the differential block.
  • each conductor 19 comprises a first connection portion a extending parallel to the side faces 21 of the housings, a second portion b perpendicular to the first extending parallel to the lower face 22 of the housings and the rail, a third portion c extending substantially perpendicular to the second b along the torus 5 substantially parallel to the side faces 21 of the block, a fourth portion d substantially perpendicular to the third c and extending parallel to the upper portion 24, 25 of the differential block and the torus 5, and a fifth portion e substantially perpendicular to the fourth d, and passing through the torus 5 to be fixed by braze-welding at its free end on a connection pad 26 to 29 of the terminal corresponding block.
  • auxiliaries 3,4 are fixed to the casing B by snap-fastening and can perform several functions, for example, the differential fault signal, the remote opening, the signaling of the leakage current.
  • These auxiliaries 3,4 simply mount in a translation movement (fig.3a) after removing the shutters 30,31 of a rotational movement using a screwdriver.
  • FIG. 2 shows that the triggering finger 10 protrudes perpendicularly to the engagement face 21 of the differential unit, which makes it exposed to shocks which can be caused for example by a fall. These shocks in the direction of the trigger finger 10 can cause a malfunction of said finger 10 and thus hinder the normal operation of the mechanism.
  • differential blocks B because of 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, during the association or in the case of a fall or shock, the tripping finger is even more exposed to receive shocks of significant intensity.
  • the differential unit B has on its attachment face 21 to the circuit breaker, a protection pin 32 extending parallel to the tripping pin 10 close to it, and intended to accommodate the shocks exerted direction of the trigger finger 10.
  • the process for bonding leads 6, 8 to pads 26 to 29, as illustrated in FIG. 4, is as follows: The torus 5 is first displaced in translation along arrow A. Then, the clamps of FIG. clamping 33 ensuring the maintenance of the connections, an electrode 34 is moved towards the beaches 26,29 and applied to the face f of the opposite to the torus 5, so as to ensure the brazing of the end of the driver on the beach Copper plated in the Y axis of the torus 5.
  • the use of a phosphor solder butterfly improves the effectiveness of the weld (better resistance to tearing).
  • the aforesaid conductor (s) is (are) welded at the end to one of the ends of one (or more) conductors, said first one. (s) intermediate (s) 36 through the torus (T) whose second end 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, can reduce further more clutter above the torus.
  • the method of implementing the corresponding device is as follows. The torus is threaded around the conductors (s) intermediate (s) 36 secured to the beaches, by sliding the torus along the intermediate conductors 36 towards the beaches 26 to 29, then the end welding of the conductors on the conductors is carried out intermediaries 36.
  • the (the) conductor (s) intermediate (s) 36 is (are) welded (s) end on the (the) range (s).
  • the second end 36b of the intermediate conductor (s) 36 is in one piece with the (the) tracks.
  • the primary conductors 6 to 9 made of rigid copper wire, with a diameter of 6 mm, are advantageously coated with an epoxy-type insulator for example.
  • a differential block B having a high caliber and a small space requirement has been realized. It is thus possible to produce a range of auxiliary differential blocks whose rating can reach 125A without increasing the size compared to the blocks currently used.
  • This rigidity of the connections allows a quick and simple association with the circuit breaker making the circuit breaker-differential more compact, optimizing the connection of the devices of the lower rail.
  • the epoxy coating of the conductors by deposition of a powder paint, will ensure the insulation of the conductors between them and contributes to the optimization of the inner window of the torus.
  • the invention makes it possible to optimize as much as possible the size of the differential chain along the axis of the rail and thus to make a range of 125A all the sensitivities with its own current, including the 30mA, in a reduced space requirement, for example in a size 99mm wide.
  • This type of connection minimizes the dimensions along the Y axis by eliminating the shaping operations of the primaries after passing through the torus.
  • This link 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)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP19980410139 1997-12-18 1998-12-08 Bloc différentiel et dispositif de raccordement électrique dudit bloc différentiel sur un disjoncteur Expired - Lifetime EP0926695B1 (fr)

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 EP0926695A1 (fr) 1999-06-30
EP0926695B1 true EP0926695B1 (fr) 2006-08-30

Family

ID=9515059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980410139 Expired - Lifetime EP0926695B1 (fr) 1997-12-18 1998-12-08 Bloc différentiel et dispositif de raccordement électrique dudit bloc différentiel sur un disjoncteur

Country Status (12)

Country Link
EP (1) EP0926695B1 (tr)
CN (1) CN1202544C (tr)
AR (1) AR014141A1 (tr)
BR (1) BR9805417B1 (tr)
DE (1) DE69835730T2 (tr)
EA (1) EA002287B1 (tr)
EG (1) EG21099A (tr)
ES (1) ES2268758T3 (tr)
FR (1) FR2772979B1 (tr)
ID (1) ID21589A (tr)
TR (1) TR199802642A3 (tr)
ZA (1) ZA9811497B (tr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2851695B1 (fr) * 2003-02-21 2006-04-28 Hager Electro Sas Moyen de connexion electrique, notamment entre un disjoncteur et un bloc differentiel
DE102005016155A1 (de) * 2005-04-07 2006-10-12 Condor-Werke Gebr. Frede Gmbh & Co. Kg Fehlerstrom-Schutzschalter
FR2902924B1 (fr) * 2006-06-26 2008-08-01 Schneider Electric Ind Sas Appareil electrique modulaire assurant au moins deux fonctions electriques tel un disjoncteur differentiel.
JP6065128B2 (ja) * 2014-02-17 2017-01-25 富士電機機器制御株式会社 漏電検出部及び漏電遮断器
FR3069718B1 (fr) * 2017-07-25 2019-08-09 Schneider Electric Industries Sas Appareil de protection electrique differentielle
FR3072462B1 (fr) 2017-10-16 2020-05-22 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
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581264B1 (fr) * 1985-04-26 1993-04-30 Etude Realisa Disjoncteurs Transformateur de sommation et processus de sa fabrication
FR2701335B1 (fr) * 1993-02-09 1995-04-14 Merlin Gerin Bloc de protection différentielle avec sous ensemble fonctionnel testable.
AT411115B (de) * 1996-05-07 2003-09-25 Felten & Guilleaume Ag Oester Schaltgerät mit bewegbaren verbindungs-leitungen

Also Published As

Publication number Publication date
ID21589A (id) 1999-06-24
TR199802642A2 (tr) 1999-10-21
EP0926695A1 (fr) 1999-06-30
AR014141A1 (es) 2001-02-07
FR2772979A1 (fr) 1999-06-25
FR2772979B1 (fr) 2002-09-20
CN1224228A (zh) 1999-07-28
ZA9811497B (en) 1999-06-18
BR9805417A (pt) 1999-11-23
DE69835730T2 (de) 2007-09-06
TR199802642A3 (tr) 1999-10-21
EG21099A (en) 2000-11-29
EA199801021A3 (ru) 1999-12-29
DE69835730D1 (de) 2006-10-12
EA002287B1 (ru) 2002-02-28
EA199801021A2 (ru) 1999-08-26
BR9805417B1 (pt) 2012-10-02
ES2268758T3 (es) 2007-03-16
CN1202544C (zh) 2005-05-18

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