EP0978859A2 - Equipement d'installation électrique avec un élément thermosensible dans la chaíne de déconnexion - Google Patents

Equipement d'installation électrique avec un élément thermosensible dans la chaíne de déconnexion Download PDF

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Publication number
EP0978859A2
EP0978859A2 EP99114168A EP99114168A EP0978859A2 EP 0978859 A2 EP0978859 A2 EP 0978859A2 EP 99114168 A EP99114168 A EP 99114168A EP 99114168 A EP99114168 A EP 99114168A EP 0978859 A2 EP0978859 A2 EP 0978859A2
Authority
EP
European Patent Office
Prior art keywords
heat
sensitive element
triggering
residual current
electrical installation
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.)
Ceased
Application number
EP99114168A
Other languages
German (de)
English (en)
Other versions
EP0978859A3 (fr
Inventor
Josef Dipl.-Ing. Baldauf
Manfred Dipl.-Ing. Kleemeier
Reinhard Dipl.-Ing. Schmid
Reinhard Dipl.-Ing. Solleder
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0978859A2 publication Critical patent/EP0978859A2/fr
Publication of EP0978859A3 publication Critical patent/EP0978859A3/fr
Ceased legal-status Critical Current

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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
    • H01H71/14—Electrothermal mechanisms
    • H01H71/145—Electrothermal mechanisms using shape memory materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/34—Means for transmitting heat thereto, e.g. capsule remote from contact member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/0107—Details making use of shape memory materials
    • H01H2061/0115—Shape memory alloy [SMA] actuator formed by coil spring

Definitions

  • Such an electrical installation device can be used as Residual current protective device must be implemented.
  • European Standard EN 61008 are in Germany, Austria and in in most European countries only independent of the mains voltage Residual current circuit breaker approved. In Austrian Space is required by Austrian regulations, that residual current circuit breakers provide overload protection should have.
  • An overload protection independent of the mains voltage can be achieved by a Memory element can be realized (DE: 19 727 826.4).
  • the invention has for its object an electrical To develop installation facility by a heat sensitive Element in a shutdown chain against thermal Overload is protected and the described Disadvantages are avoided.
  • the heat-conducting bridge can be built in without any design effort a suitable hot area of the installation to be protected start and become a heat sensitive element the triggering device.
  • the heat sensitive element for example a so-called memory element made of a memory material for comparatively low operating temperatures be selected, which facilitates the implementation in practice. So with a memory element one can be comparative high crack temperature can be chosen, making it against other heat sources become less sensitive.
  • the heat sensitive Element can also be arranged so that it is free from interference is free from other heat sources. With a memory element then one with a low transition temperature use, which makes the selection easier and the immunity promotes.
  • a mains voltage independent Achieve execution In the case of an electrical installation device, in the version as a residual current circuit breaker, a mains voltage independent Achieve execution. With a known Residual current circuit breaker becomes more dependent on the mains voltage Tripping and mains voltage independent fault current detection worked in the overload protection with a PTC thermistor is provided.
  • the installation device according to the invention in the form of a residual current circuit breaker can be completely independent of the mains voltage work and is therefore compliant with standards can be used anywhere.
  • Residual current protective device in the form of a Residual current protective device can be the thermally conductive bridge advantageous from summation current transformer to heat sensitive Element of a tripping device in the tripping chain of the residual current device be set up.
  • the total current transformer is usually the most sensitive to overload Component. Protection against overload is again here achieved completely independent of the mains voltage.
  • the triggering device can be in addition to a standard Tripping device of the residual current device or one Residual current circuit breaker are arranged and on have a triggering effect.
  • the usual standard structure is not disturbed by this, and the additional Tripping device can be arranged.
  • the additional trigger device can be a heat sensitive Element have a spring made of memory material, the works against a return spring on a release pin. Bel a holding magnetic relay of a fault current protection device you can click on the release lever of the holding magnetic relay the bolt of the additional release device let it trigger. Such an addition is in a standard residual current circuit breaker easily possible.
  • the heat-conducting bridge can advantageously be used as a copper conductor be executed. It can be beneficial to use a heat-conducting To provide conductors with an insulating jacket as heat protection.
  • the installation device with overload protection acts good heat conductor as an isotherm to the temperature to heat sensitive Element with only tolerable heat losses the actual temperature sensor, the heat sensitive one Element to forward.
  • a residual current circuit breaker is in longitudinal section illustrates the usual switch contacts, in Switch lock 1 and a summation current transformer 2 has.
  • a triggering device is operatively connected to the switch lock 3 in the form of a holding magnet release.
  • An additional Trigger device 4 consists in the embodiment a spring 5 made of memory material against a return spring 6 works on a release pin 7.
  • the additional Trigger device 4 is arranged such that it on a Act arm 8 of the standard release device 3 triggering can.
  • the summation current transformer 2 is a thermally conductive one Bridge 9 to the additional triggering device 4 is formed. This can be easily and advantageously as a copper conductor in one Insulating jacket to be executed.
  • a copper conductor with a diameter of 1.8 mm and with an insulating jacket has an excess temperature at the location of the heat-sensitive element of about 58 ° K result.
  • With a Copper conductors with a diameter of 0.6 mm have an excess temperature measured at around 40 ° K. This is a significant increase in temperature compared to a version without a thermal bridge, where you measured an excess temperature of 20 ° K Has. An increase in temperature allows the To increase the jump temperature of a memory element, the Influence by secondary heat sources decreases.
  • a memory element with a Pulling or with a printing direction in the release kinematics be provided.
  • the thermally conductive bridge 9 is then to lay to the heat sensitive element so executed. No additional triggering device is then required 4.
  • the thermal bridge then runs from the summation current transformer a heat-sensitive element in the tripping chain of the residual current device.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Breakers (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
EP99114168A 1998-08-03 1999-07-22 Equipement d'installation électrique avec un élément thermosensible dans la chaíne de déconnexion Ceased EP0978859A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998134973 DE19834973A1 (de) 1998-08-03 1998-08-03 Elektrische Installationseinrichtung mit wärmeempfindlichem Element in einer Abschaltkette
DE19834973 1998-08-03

Publications (2)

Publication Number Publication Date
EP0978859A2 true EP0978859A2 (fr) 2000-02-09
EP0978859A3 EP0978859A3 (fr) 2001-03-28

Family

ID=7876273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114168A Ceased EP0978859A3 (fr) 1998-08-03 1999-07-22 Equipement d'installation électrique avec un élément thermosensible dans la chaíne de déconnexion

Country Status (2)

Country Link
EP (1) EP0978859A3 (fr)
DE (1) DE19834973A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332964A (zh) * 2014-11-26 2015-02-04 哈尔滨理工大学 基于直接温度检测的插拔式断路器过热保护装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1928394A1 (de) * 1969-06-04 1970-12-10 Licentia Gmbh Selbstschalter mit hoher Schaltleistung,insbesondere Installationsselbstschalter
EP0037490A1 (fr) * 1980-04-03 1981-10-14 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Dispositif de déclenchement d'un interrupteur automatique pour interrompre un circuit
CH635709A5 (en) * 1979-02-02 1983-04-15 Landis & Gyr Ag Coil, which is provided with a thermal protection switch, for small apparatuses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT259054B (de) * 1966-01-25 1967-12-27 Uninorm Anstalt Fehlerstromschutzschalter mit zusätzlicher Überstromauslösung
AT285709B (de) * 1967-12-19 1970-11-10 Uninorm Anstalt Fehlerstromschutzschalter mit zusätzlicher Überstromauslösung
DE68911614T2 (de) * 1988-08-01 1994-05-26 Matsushita Electric Works Ltd Gedächtnislegierung und Schutzvorrichtung für elektrische Stromkreise unter Verwendung dieser Legierung.
DE4118177C2 (de) * 1991-06-03 1996-11-28 Abb Patent Gmbh Permanentmagnetischer Fehlerstromauslöser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1928394A1 (de) * 1969-06-04 1970-12-10 Licentia Gmbh Selbstschalter mit hoher Schaltleistung,insbesondere Installationsselbstschalter
CH635709A5 (en) * 1979-02-02 1983-04-15 Landis & Gyr Ag Coil, which is provided with a thermal protection switch, for small apparatuses
EP0037490A1 (fr) * 1980-04-03 1981-10-14 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Dispositif de déclenchement d'un interrupteur automatique pour interrompre un circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332964A (zh) * 2014-11-26 2015-02-04 哈尔滨理工大学 基于直接温度检测的插拔式断路器过热保护装置
CN104332964B (zh) * 2014-11-26 2018-04-24 哈尔滨理工大学 基于直接温度检测的插拔式断路器过热保护装置

Also Published As

Publication number Publication date
DE19834973A1 (de) 2000-02-10
EP0978859A3 (fr) 2001-03-28

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