EP0905733A2 - Wiederstandseinheit für ein Schutz - Google Patents

Wiederstandseinheit für ein Schutz Download PDF

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Publication number
EP0905733A2
EP0905733A2 EP98307778A EP98307778A EP0905733A2 EP 0905733 A2 EP0905733 A2 EP 0905733A2 EP 98307778 A EP98307778 A EP 98307778A EP 98307778 A EP98307778 A EP 98307778A EP 0905733 A2 EP0905733 A2 EP 0905733A2
Authority
EP
European Patent Office
Prior art keywords
contactor
module
resistance
resistance wire
phases
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.)
Withdrawn
Application number
EP98307778A
Other languages
English (en)
French (fr)
Other versions
EP0905733A3 (de
Inventor
Miguel Giminez Ortiz
Geert Van Causbroeck
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.)
ABB Electrification Solutions SL
Original Assignee
GE Power Controls Iberica SL
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 GE Power Controls Iberica SL filed Critical GE Power Controls Iberica SL
Publication of EP0905733A2 publication Critical patent/EP0905733A2/de
Publication of EP0905733A3 publication Critical patent/EP0905733A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/543—Auxiliary switch inserting resistor during closure of contactor

Definitions

  • the invention with which we are concerned pertains to a resistance module for contactors of the type that employs two modules for each contactor phase and is connected between each of the phases of the contactor and the corresponding phase of an auxiliary contact block, so that the latter together with the resistors of each module protect the contactor against current peaks when it is activated; and it is intended to provide greater protection to the resistors when they have to be transported as well as when they are in operation.
  • Another object of the invention consists of endowing the resistance modules with a smaller volume, so as to reduce the packing space and therefore the cost of same, as well the cost of transportation. From this standpoint, it can be deduced that less space is necessary for installation, the unit being more compact.
  • Another object of the invention consists of endowing the module with a structure capable of preventing mistakes at the time of making the connection.
  • these resistors constitute independent components that are formed by a resistance wire which must be of a certain length to provide the necessary resistance, so that said resistance wire forms loops that project considerably from the contactor and run from the input and output of each of the phases of the auxiliary contact block to each of the inlet and outlet phases of the contactors, and, in case a three-phase contactor is involved, six resistor loops are formed which project considerably from the base connector and auxiliary contact block, so that they may undergo couplings once installed, which represents a serious problem, at the same time as they occupy a large volume, which is detrimental to their installation as well as transportation, since on the same trip, a smaller number of these devices is transported, and packing costs are higher.
  • the resistance wires have to be protected by means of a sheath, which can fray, especially in the area of coupling with the contactor and, in addition, a thermo-retractable sheath is needed to prevent the flash occurring on activation of the contactor from breaking the resistor.
  • the invention provides a new resistance module for contactors that is connected between each of the input and output phases of the contactor and the corresponding input and output phases of an auxiliary contact block, in order to protect the contactor when it is activated, the resistors consisting of resistance wires.
  • the invention is characterized in that it has means of support and winding of a resistance wire, means formed by a flat body holding an insulator, on which the resistance wire is in turn wound.
  • One of the ends of the means of support and winding of the resistance wire constitutes the means of connection to one of the phases of the contactor, for which one of the ends of the resistance wire is joined to the flat body, said means of connection being formed by a tongue presented as an extension of the flat body.
  • the invention has means of coupling of the other end of the resistance wire to the end of a flexible cable, the other free end of which is connected to the corresponding phase of the auxiliary contact block.
  • It also has means of housing, retention and protection of the means of support and winding of the resistance wire and of the end of the flexible cable joined to the end of the resistance wire.
  • These means of housing, retention and protection are formed by a casing consisting of a body and a cover of insulating material, the latter having interlocking claws in housings machined in the body of the casing.
  • the means of coupling of the end of the resistance wire to the end of the flexible cable are preferably formed by a screw running through a small loop, formed at the end of the resistance wire, and through an eyelet terminal integral with the end of the flexible cable, the screw being threaded and retained in a nut housed in a receptacle provided in the body of the casing.
  • the body of the casing is endowed with a cylindrical projection in which the head of the screw is situated.
  • its body has an interior pin that is inserted in a hole machined in the flat support.
  • the body of the casing and its cover have supplementary projections that press the flat body and include supplementary ribs, all in order to accomplish their complete and perfect locking.
  • the tongue for connection to the connector projects at the bottom of the casing and the flexible cable, which is connected to the contact block, projects at its top.
  • This modular structure considerably reduces the space and volume occupied by the present resistance module devices, so that, on connecting the tongue, the flexible cable comes opposite the phase on which it is to be connected, preventing the presence of errors in this operation.
  • modules occupy a smaller volume means that, on transportation of the unit formed by the modules, contactor and auxiliary blocks, a greater number of units can be included, which reduces their cost, while making the packing simpler and requiring less material, which also represents a lower cost.
  • Another characteristic of the invention resides in the fact that the casing has means of retention of a crosspiece of sufficient length to couple the different modules connected between each phase of the contactor and of the auxiliary contact block, a compact module block being obtained.
  • the means of retention of the crosspiece in the body of each casing consist of at least one groove provided in the body of each casing, in which a claw of a tongue situated in the cross-piece fits and is retained.
  • the crosspiece is inserted in different grooves, depending on the pitch existing between the phases of each size of contactor.
  • the module of the invention has means of support and winding of a resistance wire 1, means formed by a flat body 2 holding an insulator 3, on which the resistance wire 1 is wound.
  • the flat body 2 is endowed with an extension forming a tongue 4 that is connected to one of the phases of a contactor 14, for which one of the ends 5 of the resistance wire 1 is integrally joined to the flat body 2, while the other end of the resistance wire forms a small loop 6 that projects from the flat body 2 and is situated on an eyelet terminal 7 integral with the end of a flexible cable 8.
  • the module has means of housing, retention and protection of the flat body 2 and of the end of the flexible cable 8, means that are formed by a casing constituted by a body 9 and a cover 10.
  • the body 9 is endowed with a receptacle 11 accommodating and retaining a nut 12, in which screw 13 is threaded after running through the eyelet terminal 7 and the small loop 6, physical and electric coupling being made between the resistance wire 1 and the flexible cable 8.
  • the other end of the flexible cable 8 is the one connected to the corresponding phase of an auxiliary contact block 16.
  • the cover 10 includes a cylindrical projection 17 in which the head of the screw 13 is housed.
  • the body 9 has housings 15 and 18 opened outwards, so that claws 20 provided on tongues 19 of the cover 10 are retained in housing 15.
  • a claw 21, which is also integral with the cover 10, is retained in housing 18, so that a perfect closing of the cover is achieved.
  • the flat body 2 is fastened by means of extensions 25 and 25, 31 and 30, situated respectively on the body 9 and the cover 10 pressing on the flat support 2.
  • the body 9 has an interior pin 23 that is inserted in a hole 22 machined in the flat support 2 in order to accomplish the correct positioning.
  • Ribs 32, 33, 34 and 35 have also been provided, which buffer the position of the flat body 2 on body 9.
  • the casing is endowed with means of retention of a cross-piece 27, means formed by a plurality of grooves 24 in which claws 28 of tongues 29 provided on the crosspiece 27 are fitted and retained, so that the crosspiece can be coupled to a plurality of casings.
  • the tongues 29 are inserted in different grooves 24, depending on the pitch or separation existing between the phases of each size of contactor, a compact block being obtained for any of the sizes of contactor.
  • a crosspiece 27 is shown, which makes possible the union of three casings that are coupled to the three main phases of a contactor 14.
  • the casing (body 9 and cover 10) has a narrowing 36 through which, after connecting the modules on the corresponding phases of the contactor 14 and auxiliary contact block 16, the different phases of the contactor can be connected to the network.
  • the structure described has a reduced volume compared to conventional modules, which accounts for the advantages already discussed.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Details Of Resistors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP98307778A 1997-09-24 1998-09-24 Wiederstandseinheit für ein Schutz Withdrawn EP0905733A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES009701999A ES2135339B1 (es) 1997-09-24 1997-09-24 Modulo de resistencia para contactores.
ES9701999 1997-09-24

Publications (2)

Publication Number Publication Date
EP0905733A2 true EP0905733A2 (de) 1999-03-31
EP0905733A3 EP0905733A3 (de) 1999-08-04

Family

ID=8300682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98307778A Withdrawn EP0905733A3 (de) 1997-09-24 1998-09-24 Wiederstandseinheit für ein Schutz

Country Status (2)

Country Link
EP (1) EP0905733A3 (de)
ES (1) ES2135339B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2874167A4 (de) * 2012-07-13 2016-01-27 Siemens Ag Anschlusskasten und schützvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8622553U1 (de) * 1986-08-22 1986-10-23 Murr-Formenbau GmbH, 7155 Oppenweiler Anschlußgehäuse für einen Schütz
DE29601735U1 (de) * 1995-06-09 1996-03-14 Sprecher + Schuh Ag, Aarau, Aargau Widerstandsanordnung zu einem zum Schalten von kapazitiven Lasten bestimmten elektromagnetischen Schaltgerät
DE19729595C1 (de) * 1997-07-10 1998-10-22 Siemens Ag Kondensatorschütz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8622553U1 (de) * 1986-08-22 1986-10-23 Murr-Formenbau GmbH, 7155 Oppenweiler Anschlußgehäuse für einen Schütz
DE29601735U1 (de) * 1995-06-09 1996-03-14 Sprecher + Schuh Ag, Aarau, Aargau Widerstandsanordnung zu einem zum Schalten von kapazitiven Lasten bestimmten elektromagnetischen Schaltgerät
DE19729595C1 (de) * 1997-07-10 1998-10-22 Siemens Ag Kondensatorschütz

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2874167A4 (de) * 2012-07-13 2016-01-27 Siemens Ag Anschlusskasten und schützvorrichtung
US9692221B2 (en) 2012-07-13 2017-06-27 Siemens Aktiengesellschaft Junction box and contactor device

Also Published As

Publication number Publication date
EP0905733A3 (de) 1999-08-04
ES2135339B1 (es) 2000-05-01
ES2135339A1 (es) 1999-10-16

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