EP2053627B1 - Séparateur de charge de sécurité NH doté d'un transformateur d'intensité - Google Patents

Séparateur de charge de sécurité NH doté d'un transformateur d'intensité Download PDF

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Publication number
EP2053627B1
EP2053627B1 EP08166483.1A EP08166483A EP2053627B1 EP 2053627 B1 EP2053627 B1 EP 2053627B1 EP 08166483 A EP08166483 A EP 08166483A EP 2053627 B1 EP2053627 B1 EP 2053627B1
Authority
EP
European Patent Office
Prior art keywords
current transformer
disconnector according
contact
fixing
disconnector
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
EP08166483.1A
Other languages
German (de)
English (en)
Other versions
EP2053627A2 (fr
EP2053627A3 (fr
Inventor
Wolfgang Radke
Francis Kilian
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.)
EFEN GmbH
Original Assignee
EFEN GmbH
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 EFEN GmbH filed Critical EFEN GmbH
Publication of EP2053627A2 publication Critical patent/EP2053627A2/fr
Publication of EP2053627A3 publication Critical patent/EP2053627A3/fr
Application granted granted Critical
Publication of EP2053627B1 publication Critical patent/EP2053627B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0266—Structural association with a measurement device, e.g. a shunt

Definitions

  • the present invention relates to NH fuse-switch disconnectors or NH-fuse switch-disconnectors having a housing with a bottom surface and at least one feeding contact projecting over the bottom surface.
  • Low-voltage, high-performance (NH) fuse switch disconnectors or NH fuse-switch disconnectors have long been known and are used to provide fused outgoing busbars that can be disconnected under load.
  • the devices generally include one or more fuse bases disposed within the housing. Corresponding fuse links are mounted on a switch cover, so that when the switch cover is closed, the fuse links are inserted in the fuse bases and establishes a connection between the respective - can be connected to the busbar - feed contacts and the outgoing contacts. When opening the switch cover, the fuse links are pulled out of the fuse bases so that the connection is broken.
  • the present invention can also be used in open distribution strips, in which the fuse links can be pulled out of the open housing with a suitable tool.
  • the term NH fuse load bar should therefore also include the open distribution strips.
  • current transformers are usually used.
  • Current transformers work like transformers, ie an alternating current flowing through the outgoing connection (primary conductor) induces, in a secondary conductor provided by the current transformer, a secondary current which is galvanically isolated from the primary circuit and which is evaluated for measuring the primary current can.
  • the measurement is non-contact, that is, the secondary conductor is arranged surrounding the connecting line between the power bus and Abgriffscript.
  • plug-on current transformers which have a primary conductor (for example in the form of an electrically conductive cylindrical part) and a secondary conductor surrounding it.
  • the current transformer is mounted on the feed contact so that the primary conductor contacts the feed contact and the primary conductor of the current transformer receives the current flowing through the feed contact.
  • These current transformers typically have a thickness between 30 and 50 mm. Since they are mounted directly on the supply contacts, this means that the entire NH fuse-switch-disconnector is built up correspondingly higher so that a NH fuse-switch-disconnector with current transformer in the control cabinet protrudes from a NH fuse-switch-disconnector without current transformer.
  • a fuse base is already known with a housing in which the feed contact can be replaced if necessary by a recessed relative to the bottom surface feed contact, so that a current transformer element can be at least partially received in the bottom surface of the housing.
  • This measure avoids the use of dummy current transformers.
  • the installation of the current transformer is very expensive, since the feed contact must be replaced with the NH fuse switch disconnector.
  • the current transformers are also expensive to manufacture here, since the current transformer contains a primary conductor.
  • the middle part is designed as a solid cylinder.
  • This solid cylinder is intended to act as a primary conductor for a current transformer.
  • a current transformer can be threaded with a slot-shaped opening on the Z-shaped feed contact.
  • the housing bottom In order to allow such threading, the housing bottom must be made open, which is not always compatible with the strict requirements for contact protection.
  • DE-C-10062644 discloses an NH fuse load disconnector according to the preamble of claim 1.
  • this object is achieved in that at least one fastening element is arranged on the bottom surface spaced from the feed contact on this projecting, wherein the fastening element is designed such that it has at least one stop surface for the installation of a current transformer surrounding the feed.
  • a current transformer with a correspondingly executed through opening can be placed on the feed contact such that it rests against the fastening element. This ensures that the current transformer is optimally aligned with respect to the feed-in contact to allow precise measurement of the primary current.
  • the current transformer is preferably selected so that its thickness substantially corresponds to the height at which the feed contact protrudes beyond the bottom surface, so that the NH fuse switch disconnector does not build up when mounting a current transformer. It is therefore not necessary to equip adjacent NH fuse switch disconnectors with a dummy transducer.
  • stop surface is used only for pre-positioning of the current transformer, the current transformer in its final position, however, no longer touches the stop surface.
  • At least two fastening elements are present, each having at least one stop surface for a current transformer.
  • both fasteners provide a stop surface for the same current transformer available, whereby a particularly accurate positioning of the current transformer relative to the feed contact is possible.
  • the fastening elements can also be provided for the attachment of two current transformer elements.
  • a fastening element can also provide a plurality of stop surfaces, which are provided for the installation of a plurality of current transformer elements.
  • the two fastening elements are connected to one another via at least one, preferably two connecting walls arranged essentially perpendicularly on the bottom surface. These connecting walls provide lateral contact protection.
  • the feed contact is then enclosed in the fastening elements and the two connecting walls.
  • the current transformer can then be used for example in the space formed by the fastening elements and the two connecting walls, so that the feed-in contact extends through the passage opening of the current transformer.
  • the connecting walls are connected via predetermined breaking points to the bottom surface and / or the fastening elements, so that the connecting walls can be removed if a current transformer is to be accommodated.
  • This measure makes it possible to carry out the current transformer in a width which is greater than the distance between the two connecting walls.
  • the fastening element is arranged in the transverse direction approximately in the middle of the bottom surface and preferably the extension of the fastening element in the transverse direction is smaller than the extension of the bottom surface in the transverse direction.
  • the fastening element has a fastening device on one of its side walls oriented substantially perpendicular to the bottom surface.
  • the fastener serves not only as a stop, but also for attachment of the entire current transformer to the NH fuse load disconnector.
  • the fastening device can be formed for example by a substantially T-shaped groove into which a head bolt attached to the current transformer can be used for fastening. Basically, the most diverse fastening device are possible.
  • the fastening element is preferably dimensioned such that it projects approximately equidistant over the bottom surface as the feed contact.
  • At least one current transformer element is provided with a central passage opening, wherein the current transformer element is arranged such that the feed contact is at least partially disposed within the central opening.
  • the feed-in contact may be essentially Z-shaped, wherein the central passage opening is dimensioned such that the cross-sectional area of the central passage opening approximately corresponds to the area of a leg of the feed-in contact.
  • the current transformer preferably has a length in the transverse direction that substantially corresponds to the extent of the bottom surface in the transverse direction.
  • the current transformer is substantially parallelepipedic, with a side face of the current transformer connected to a side face of the fastener, preferably the connection being made by means of a plug connection, e.g. a dovetail connection, takes place.
  • a plug connection e.g. a dovetail connection
  • the current transformer element has at least two secondary conductors and at least two through openings which are each surrounded by a secondary conductor.
  • the current transformer element consists of several independently operable current transformers, each cooperating with a feed contact.
  • the current transformer element has at least one further opening for receiving a fastening element.
  • the current transformer element is therefore designed such that it has openings into which the fastening element penetrates and has openings into which the feed contacts penetrate, so that the transducer element surrounds both the fastening element and the feed contact.
  • the current transformer element has a thickness which corresponds approximately to the height of the feed-in contact. This has the consequence that the transducer element completely covers the feed contact laterally and therefore provides a high contact protection.
  • connections for the secondary conductors are arranged or carried out on one end side of the current transformer element, in order to make the subsequent connection easy.
  • FIG. 1 an embodiment of a NH fuse load switch strip according to the invention is shown.
  • the NH fuse switch-disconnector 1 has a housing 2 with a bottom surface 3.
  • the feed contacts 4 are Z-shaped, wherein the in FIG. 1 visible leg has a through hole, which is used to attach the feed 4 to a busbar by means of fastening screws (not shown) is used.
  • contact hooks may be mounted on the feed contracts 4, which in turn are then provided for connection to the busbars without drilling.
  • fuse bases are arranged, each receiving a fuse link, so that the load switching device 3 provides safe outputs of three busbars. If the shift lever 5 is actuated, the fuse links are pulled out of the fuse bases, so that the flow of current is interrupted.
  • the feed contacts 4 project beyond the bottom surface 3 of the housing 2.
  • further fasteners 6, 7, 8 are arranged, which also project beyond the bottom surface 3.
  • Adjacent fastening elements 6, 7, 8 are connected to one another via connecting walls 9.
  • the connecting walls 9 are connected via predetermined breaking points 10 with the fastening elements 6, 7, 8 and the bottom surface 3.
  • the NH fuse load disconnector 1 can in the FIGS. 1 and 2 shown configuration can be used. However, a measurement of the branched off via the feed 4 current can not be made.
  • feed contacts 4, fastening elements 6, 7, 8 and connecting walls 9 extend substantially equally from the bottom surface 3, so that when the feeding contacts 4 are mounted on busbars, the connecting walls 9 together with the fastening elements 6, 7, 8 provide a lateral contact protection.
  • the fastening elements 6, 7, 8 are on the bottom surface 3 in the transverse direction, d. H. arranged in a direction perpendicular to the connecting line of the feed contacts (the so-called longitudinal direction) substantially in the middle, so that at the longitudinal edge of the housing a stepped base 15 remains.
  • the connecting walls 9 can be broken off at the predetermined fragments 10, so that the in FIG. 3 shown situation.
  • the current transformer element 11 has a central passage opening 12 whose cross-sectional area corresponds approximately to the Z-shaped angled surface 13 of the feed contact 4, so that the current transformer 11 can be pushed over the feed contact 4, so that the in FIG. 5 shown situation. It can be seen that the current transformer 11 has an end face which faces a fastening element 7, a cross-sectionally T-shaped connecting projection which engages in corresponding grooves arranged in the fastening element 7.
  • the current transformer 11 has a recess 16 at its end facing away from the fastening element 14.
  • the fastening element 6 has a recess 17 corresponding to the protruding tab 17, which engages the power contact 4 mounted on the current transformer 11 in the corresponding extension 16, so that the current transformer 11 is held securely.
  • a connection opening 18 is provided, through which the secondary conductor (not shown) arranged in the current transformer 11 can be contacted.
  • a current transformer 11 is required only at a feed contact 4.
  • FIG. 6 an alternative embodiment of a current transformer 11 'is shown.
  • This embodiment of the current transformer 11 ' has a total of three central through holes 12, which are provided to receive the feed contacts 4. Furthermore, passage openings 19, 20 are provided which serve to receive the fastening elements 6, 7, 8.
  • the current transformer element 11 has at its one end a recess 16, which corresponds to the corresponding recess of the first embodiment of the current transformer element 11, and a cross-sectionally T-shaped fastening projection 14, which is arranged within a recess 20, however.
  • the current transformer element 11 ' has at least one secondary conductor (not shown) which is coupled to one of the through openings 12.
  • the other through holes 12 may be formed without secondary conductors. However, it is also possible that each through-hole 12 has its own secondary conductor, so that the current flow through all three feed-in contacts 4 with the current transformer element 11 'can be detected.
  • a contact socket 21 is provided, which provides corresponding contact connections to all secondary conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Fuses (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (15)

  1. Séparateur de charge de sécurité (1) pour basse tension et grande puissance (NH) comprenant un boîtier (2) ayant une surface de fond (3) et au moins un contact d'amenée (4) en saillie par rapport à la surface de fond, caractérisé en ce qu'au moins un élément de fixation (6, 7, 8) est disposé sur la surface de fond à une distance du contact d'amenée et en saillie par rapport à celle-ci.
  2. Séparateur selon la revendication 1, caractérisé en ce que l'élément de fixation est conformé pour présenter au moins une surface d'appui (22) pour l'appui d'un transformateur d'intensité (11) entourant le contact d'amenée, avantageusement étant prévus au moins deux éléments de fixation dont chacun présente au moins une surface d'appui pour un transformateur d'intensité.
  3. Séparateur selon la revendication 2, caractérisé en ce que les deux éléments de fixation sont reliés entre eux par au moins une, de préférence par deux, paroi(s) de liaison (9) disposée(s) perpendiculairement sur la surface de fond.
  4. Séparateur selon la revendication 3, caractérisé en ce que deux parois de liaison (9), reliant entre eux les deux éléments de fixation, sont prévues, le contact d'amenée étant entouré par les éléments de fixation et les deux parois de liaison.
  5. Séparateur selon la revendication 3 ou 4, caractérisé en ce que les parois de liaison sont attachées à la surface de fond et/ou aux éléments de fixation par des liens (10) destinés à la rupture, de façon que les parois de liaison peuvent être enlevées lorsqu'un transformateur d'intensité doit être reçu.
  6. Séparateur selon l'une des revendications 1 à 5, caractérisé en ce que l'élément de fixation est disposé transversalement à peu près au milieu de la surface de fond et en ce que, de préférence, l'étendue de l'élément de fixation dans la direction transversale est inférieure à l'étendue de la surface de fond dans la direction transversale.
  7. Séparateur selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de fixation présente, sur une de ses parois latérales orientées sensiblement perpendiculairement à la surface de fond, un dispositif de fixation.
  8. Séparateur selon l'une des revendications 1 à 7, caractérisé en ce que l'élément de fixation et le contact d'amenée sont en saillie de la même mesure par rapport à la surface de fond.
  9. Séparateur selon l'une des revendications 1 à 8, caractérisé en ce qu'il est prévu au moins un élément transformateur d'intensité avec un passage central, l'élément transformateur d'intensité étant disposé de façon que le contact d'amenée soit disposé au moins partiellement à l'intérieur du passage central.
  10. Séparateur selon la revendication 9, caractérisé en ce que le transformateur d'intensité présente en direction transversale une longueur qui correspond sensiblement à l'étendue de la surface de fond dans la direction transversale.
  11. Séparateur selon la revendication 9 ou 10, caractérisé en ce que le transformateur d'intensité est essentiellement parallélépipédique, une face latérale du transformateur d'intensité étant reliée à une face latérale de l'élément de fixation, la liaison étant réalisée de préférence par une connexion enfichable comme par exemple avec une liaison à queue d'aronde.
  12. Séparateur selon l'une des revendications 9 à 11, caractérisé en ce que l'élément transformateur d'intensité comprend au moins deux conducteurs secondaires et au moins deux passages dont chacun est entouré par un conducteur secondaire.
  13. Séparateur selon la revendication 12, caractérisé en ce que l'élément transformateur d'intensité comporte au moins une ouverture supplémentaire pour recevoir un élément de fixation.
  14. Séparateur selon l'une des revendications 9 à 13, caractérisé en ce que l'élément transformateur d'intensité à une épaisseur correspondant approximativement à la hauteur du contact d'amenée.
  15. Séparateur selon l'une des revendications 9 à 14, caractérisé en ce que, sur une face avant de l'élément transformateur d'intensité, sont disposés ou passés des connecteurs pour les conducteurs secondaires
EP08166483.1A 2007-10-25 2008-10-13 Séparateur de charge de sécurité NH doté d'un transformateur d'intensité Active EP2053627B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007051419A DE102007051419A1 (de) 2007-10-25 2007-10-25 NH-Sicherungslasttrenner mit Stromwandler

Publications (3)

Publication Number Publication Date
EP2053627A2 EP2053627A2 (fr) 2009-04-29
EP2053627A3 EP2053627A3 (fr) 2011-08-31
EP2053627B1 true EP2053627B1 (fr) 2015-04-08

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EP08166483.1A Active EP2053627B1 (fr) 2007-10-25 2008-10-13 Séparateur de charge de sécurité NH doté d'un transformateur d'intensité

Country Status (4)

Country Link
EP (1) EP2053627B1 (fr)
DE (1) DE102007051419A1 (fr)
ES (1) ES2539432T3 (fr)
HU (1) HUE025237T2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372053A (zh) * 2015-12-07 2016-03-02 江苏省电力公司检修分公司 一种中置柜手车卡涩智能检测装置及检测方法
EP3467865A1 (fr) 2017-10-03 2019-04-10 Gorlan Team, S.L.U. Conduit de câble, bloc fusible et système de surveillance
DE202017007671U1 (de) 2017-10-03 2024-02-07 Gorlan Team, S.L.U. Kabelkanal, Sicherungssockel und Überwachungssystem

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
PL2546856T3 (pl) 2011-07-12 2016-11-30 Listwa do bezpieczników NH
DE102011052449A1 (de) 2011-08-05 2013-02-07 Efen Gmbh Stromwandler sowie Lasttrenner mit einem solchen
BR112015013818A2 (pt) 2012-12-13 2017-07-11 Efen Gmbh transformador de corrente e seccionador de corte em carga com transformador de corrente
PL2779200T4 (pl) * 2013-03-14 2019-01-31 Pronutec, S.A.U. Moduł pomiarowy do podstawy bloku bezpiecznika
ES2615394T3 (es) * 2014-07-18 2017-06-06 Sag Gmbh Dispositivo de montaje, sistema y procedimiento para la regulación de redes de tensión
PL2985779T3 (pl) * 2014-08-13 2021-10-25 Pronutec, S.A.U. Podstawa uchwytu bezpiecznikowego
DE102015105441A1 (de) 2015-04-09 2016-10-13 Efen Gmbh Stromwandlersystem sowie Lasttrenner mit einem solchen
DE102017011374A1 (de) 2017-12-11 2019-06-13 Fachhochschule Südwestfalen Schutzeinrichtung für Niederspannungsanlagen mit integrierter Messelektronik
ES2874234T3 (es) * 2018-12-19 2021-11-04 Jean Mueller Gmbh Elektrotechnische Fabrik Dispositivo de conmutación que presenta una parte de soporte y que presenta un componente de un sistema electrónico dispuesto en la parte de soporte
EP4068323A1 (fr) 2021-03-31 2022-10-05 Jean Müller GmbH Elektrotechnische Fabrik Dispositif destiné à être agencé sur des barres de distribution, comprenant un dispositif de commutation et un module électronique
DE102022104394A1 (de) 2022-02-24 2023-08-24 EBG innolab GmbH Elektrische Schutzeinrichtung mit Messmodul
DE102022113758A1 (de) 2022-05-31 2023-11-30 EBG innolab GmbH Elektrische Schutzeinrichtung mit Messmodul
FR3140204A1 (fr) * 2022-09-22 2024-03-29 Hager-Electro Sas Module de protection pour une entrée d’alimentation d’un appareillage électrique de coupure du type sectionneur à fusible NH

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CH680175A5 (fr) 1990-04-26 1992-06-30 Weber Ag
DE29705224U1 (de) * 1997-03-22 1997-06-26 Mueller Jean Ohg Elektrotech Einrichtung mit einer NH-Sicherungs- oder NH-Lastschaltleiste sowie einem Wandler
AT4111U1 (de) 1999-12-17 2001-01-25 Schneider Schaltgeraetebau Und Stromleiter für stromwandler einer nh-sicherungs-einrichtung oder nh-sicherungs-lastschalteinrichtung
DE10002800B4 (de) 2000-01-24 2005-12-29 Wöhner GmbH & Co. KG Elektrotechnische Systeme NH-Sicherungsleiste
DE10062644C1 (de) * 2000-12-15 2002-06-20 Mueller Jean Ohg Elektrotech Halter für eine Stromerfassungseinrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372053A (zh) * 2015-12-07 2016-03-02 江苏省电力公司检修分公司 一种中置柜手车卡涩智能检测装置及检测方法
EP3467865A1 (fr) 2017-10-03 2019-04-10 Gorlan Team, S.L.U. Conduit de câble, bloc fusible et système de surveillance
WO2019068950A1 (fr) 2017-10-03 2019-04-11 Gorlan Team S.L.U. Gouttière de câbles, base porte-fusibles, et système de surveillance
DE202017007671U1 (de) 2017-10-03 2024-02-07 Gorlan Team, S.L.U. Kabelkanal, Sicherungssockel und Überwachungssystem

Also Published As

Publication number Publication date
ES2539432T3 (es) 2015-06-30
EP2053627A2 (fr) 2009-04-29
EP2053627A3 (fr) 2011-08-31
HUE025237T2 (en) 2016-07-28
DE102007051419A1 (de) 2009-04-30

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