EP1002325A1 - Procede pour determiner des donnees specifiques d'appareils de commutation au niveau de contacts installes dans lesdits appareils de commutation et/ou donnees specifiques de fonctionnement dans un reseau commute de fa on correspondante - Google Patents

Procede pour determiner des donnees specifiques d'appareils de commutation au niveau de contacts installes dans lesdits appareils de commutation et/ou donnees specifiques de fonctionnement dans un reseau commute de fa on correspondante

Info

Publication number
EP1002325A1
EP1002325A1 EP98948727A EP98948727A EP1002325A1 EP 1002325 A1 EP1002325 A1 EP 1002325A1 EP 98948727 A EP98948727 A EP 98948727A EP 98948727 A EP98948727 A EP 98948727A EP 1002325 A1 EP1002325 A1 EP 1002325A1
Authority
EP
European Patent Office
Prior art keywords
voltage
switching
contact
detected
microprocessor
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
EP98948727A
Other languages
German (de)
English (en)
Other versions
EP1002325B1 (fr
Inventor
Fritz Pohl
Norbert Elsner
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 EP1002325A1 publication Critical patent/EP1002325A1/fr
Application granted granted Critical
Publication of EP1002325B1 publication Critical patent/EP1002325B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator

Definitions

  • the invention relates to a method for determining switching device-specific data on contacts in switching devices, in particular contactor contacts, and / or for determining operation-specific data in the network connected therewith according to the preamble of patent claim 1.
  • the invention also relates to the associated Device for performing the method.
  • the existing electronics can be used on the one hand to detect certain malfunctions during the remaining service life detection and to avoid a false evaluation, and on the other hand to obtain useful data for switching device monitoring, such as certain states of the switching device or the electrical network connected with it .
  • useful data for switching device monitoring such as certain states of the switching device or the electrical network connected with it .
  • Points 1, 2 and 5 relate to switching device-specific data of the contactor used as switching device and the points 3 3, 4 and 6 company-specific data in the switched network.
  • the voltage at the artificial star point is not at zero potential, but it is AC voltage having the amplitude U st ran g in two intact phases or 1 U str HS at a phase intact.
  • the electronic evaluation circuit for the contact opening therefore generates a periodic output signal despite the closed bridge contacts, which would normally result in an incorrect evaluation of the remaining service life due to an incorrectly determined time difference.
  • the microprocessor advantageously, the evaluation of the residual life is cut off when the two states ⁇ contactor switched on 'and' -Phasenausfall 'are made simultaneously.
  • the Ausensesperre is updated by the microprocessor in a predetermined time interval and at the same state in each of the following Interval continued: The maximum value of the contactor switch-off time is recommended as the interval length.
  • the development of the device can detect the occurrence of a switching voltage as a voltage drop in a current branch of the star point circuit.
  • FIG. 1 shows the detection of the remaining service life of contactor contacts during the switching-off process with simultaneous determination of operationally relevant data or states
  • FIG. 2 shows the generation of the opening time T ⁇ for the first-opening switching contacts of contactors during the switching-off process in three-phase networks and monitoring of the
  • FIG. 3 shows an example of the remaining service life detection with integrated magnetosensor technology
  • FIG. 4 shows the detection of the contact opening on the artificial one
  • FIG. 5 without the use of a further reference potential and FIG. 5 the evaluation for detecting the phase voltages at the current branches at the artificial star point according to FIG. 4.
  • FIG. 1 shows the schematic representation of a device for detecting the remaining service life and assigning it to a contactor 1.
  • An evaluation device 100 is located on the load side 10 between the contactor and an electrical consumer, for example a motor 20, and is contacted via a first monitoring module 101 to detect the opening of contact with the outer conductors L1, L2 and L3.
  • the monitoring unit 101 controls a microprocessor 105, which determines the contact pressure and additional switching operating states.
  • the microprocessor receives further signals for monitoring the armature opening of the contactor magnet drive from a unit 102.
  • the microprocessor outputs the result data to an output unit 106, from which, if necessary, all switching device-specific data is output via a bus for further evaluation.
  • a contactor magnetic drive 5 is assigned to the contactor, which consists of an armature 3 with an associated yoke 4.
  • Contactor coils 6 and 6 ' are attached to the yoke. The coils are controlled by a control switch. The voltage at the contactor magnet coils is fed to the unit 102 for monitoring the armature opening and the armature opening signal is transmitted to the evaluation unit 100.
  • the electronic circuit for detecting the start of the armature opening from the coil voltage generates at the zero crossings 6 against the sine AC voltage pulse.
  • These voltage pulses can be supplied to the microprocessor 105 via an optocoupler for direct evaluation, or a square wave signal can be generated, for example, with a retriggerable time step, which changes the switching state from on to off with the voltage change, e.g. from ⁇ high 'with a predetermined delay ⁇ deep follows.
  • the duration of a network half period can be specified for the delay time.
  • phase failure is detected when the contactor 1 is switched on as a periodic star point signal and can be recognized directly by the microprocessor in the evaluation circuit of the contact opening according to FIG. 2 as a periodic (double mains frequency) output signal.
  • a voltage which is proportional to the phase voltage is tapped at a voltage divider of the artificial star point circuit and which is connected between the load-side measuring connection of an outer conductor and the measuring earth and is further processed as a digital signal.
  • Contact welding can be detected when the contactor is switched off when the mains voltage is applied.
  • Current transformers such as those used in an overload relay can be used for short-circuit detection.
  • a magneto sensor system is used, for example, with which the exceeding of a predetermined current threshold is detected.
  • inexpensive inductance sensors can also be used. The sensors are arranged in isolation directly on the main current paths so that the measured magnetic field dominates and the magnetic field influence of adjacent short-circuit-carrying switching devices can be neglected.
  • the short-circuit detection is always linked by the microprocessor with the contactor switch-on state.
  • the microprocessor can issue an additional warning message to check the contactor contacts for welding.
  • the contactor could be switched off in a controlled manner in order to carry out a welding test.
  • the control phase of the contactor drive can be switched off briefly via a break contact controlled by the microprocessor, or permanently if there is a short circuit.
  • FIG. 2 shows an example of a circuit for generating a time signal T ⁇ at the start of contact opening of the most burned down main contacts.
  • the essential property of this circuit is to measure the contact voltages (arc voltage) of a three-pole switching device in the three-phase network at the artificial star point 15.
  • an extended evaluation unit 180 for detecting the mains voltage and for detecting the neutral point voltage.
  • the time T ⁇ for the first opening switching contacts during the switch-off process can be determined and, on the other hand, the mains voltage can be monitored at the same time.
  • the remaining service life detection can be carried out according to FIG. 3 with integrated magnetosensor technology for the purpose of short-circuit detection.
  • An overload relay with an integrated unit 200 for detecting the remaining service life in front of the motor 20 is interposed between the contactor 1, the units 201, 202 and 205 corresponding to the units 101, 102 and 105 from FIG.
  • a module 220 for monitoring short-circuits is also present in FIG.
  • the monitoring module 220 is controlled by magnetic sensors 221 to 223 assigned to the individual lines.
  • varistors limit overvoltages only to approximately 1.75 times their nominal operating voltage. Suppressor diodes, whose current-voltage characteristic curve breaks sharply, have proven to be cheaper. It is advantageous that the suppressor diodes, like the varistors, do not consume any electrical power in normal operation.
  • Free-wheeling circuit by means of a microprocessor-controlled free-wheeling transistor, to which a zener diode (anti) is connected in parallel to limit the switching voltage, the delay in switching off the contactor can be shortened and an evaluable coil voltage signal can be generated.
  • the time signal of the switching voltage required for this at the first opening main contact pieces was generated by measuring the differential voltage between a fixed reference potential, such as zero or earth potential, and the potential of an artificial star point on the load side of the monitored contactor.
  • a fixed reference potential such as zero or earth potential
  • the potential of an artificial star point on the load side of the monitored contactor.
  • neither a neutral conductor nor a protective conductor can be available in a switchgear.
  • the possibility of forming a fixed reference potential on the supply side of the contactor with another artificial star point would require additional technical effort.
  • the start of contact opening can be detected in FIGS. 4 or 5 without using a zero or earth potential.
  • the occurrence of a switching voltage is detected as a voltage drop in a current branch of the star point circuit.
  • the measured voltage is further processed with a high-pass filter and provides an output voltage proportional to the switching voltage. In a conventional manner, this can generate the desired control signal of the first start of contact opening when a predetermined threshold value is exceeded. Evaluation by logically linking the detected signals
  • U STF R * I ⁇ + L * d / dt f L + U B T J.
  • T JSTF R * I 2 + L * d / dt (I 2 ) + U B2
  • U 3 - U STP R * I 3 + L * d / dt (I 3 ) + U B3 ⁇ :
  • 50 denotes a passive high-pass filter with capacitance C x and ohmic resistance R x , via which a unit 500 is controlled to determine the contact opening time.
  • the time T ⁇ is determined precisely without a reference potential, such as zero or earth potential, having to be present.
  • an active high-pass filter of higher order or a series connection of passive and active high-pass filters can therefore be used instead of the passive high-pass filter 50 from FIG.
  • the amplitude of the input voltage at the active high-pass filter can be limited to permissible values.
  • the circuit in accordance with FIG. 4 is modified in such a way that an evaluation unit 600 is connected directly to the one strand of the artificial star point circuit, which evaluates the contact opening and the mains voltage. From the other two strings, another measuring line is connected to the evaluation unit to monitor its string voltage.
  • the evaluation unit 600 contains passive and / or active high-pass filters for detecting the switching voltage of the first opening switching contact and, moreover, an electronic circuit for detecting the phase voltages of the monitored circuits.
  • the contact erosion changes the position of the movable contact carrier to the fixed contact carrier both in the
  • Switch-on state as well as at the moment of contact separation, and thus the position of the switching lock components coupled to the movable contact carrier.
  • key switch components include e.g. the switching shaft on which the moving contact carriers are mounted, or the lever mechanism for transmitting power to the switching shaft and / or to the moving contacts.
  • the movement (linear and / or rotational movement) of the switching mechanism components is generally a non-uniformly accelerated movement.
  • the contact erosion, as with the following, is simple
  • a time shift ⁇ t of the contact opening time causes shorter times:
  • the contact pressure is denoted by s, with the new state being assigned the structurally predetermined value s new and the end of life having the minimum pressure s m ⁇ n .
  • runtimes are measured, the end time of which is equated with the contact opening time.
  • the time at which a selected component of the key switch reaches a predetermined position during the switch-off process is selected as the starting time. This also ensures that short-circuit shutdowns, in which the contact opening due to current forces occurs before the predetermined switching lock position is reached, are not used to evaluate the contact erosion. This avoids incorrect evaluation of the contact erosion in the event of short-circuit shutdowns.
  • the design properties of the key switch determine in detail the method for generating the start time for the runtime measurement.
  • the switch lock is usually designed as a rocker arm mechanism, in which the lever mechanism has to overcome a dead center position when the position changes.
  • a key switch position in which the lever mechanism is in the switch-off position between the dead center position and the end position is therefore specified as the predetermined key switch position for detecting an initial point in time of the transit time measurement.
  • Optical sensors are concerned with the problem of contamination, e.g. due to the erosion, exposed and therefore not particularly suitable for position detection in the switchgear.
  • An electromechanical auxiliary contact is suggested as a simple, robust device for position detection, which is opened by the switching lock component to be monitored. The fixed contact of this auxiliary contact device determines the impact position of the monitored switching lock component on the associated moving contact. This should allow a reproducible position detection to at least 1/10 mm without great effort.
  • the running time t will now be newly detected and stored in a suitable non-volatile data memory in the switch-off operation.
  • the running time t is reduced to a value t min , which corresponds to the maximum permissible erosion ⁇ s max .

Landscapes

  • Keying Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Selon l'invention, il est prévu, notamment pour des contacts de mise à la terre, de détecter l'effet de ressort au niveau de l'espace de coupure en tant que critère de remplacement en cas d'usure des contacts. Lorsque la variation de l'effet de ressort est mesurée pendant la mise hors circuit, on peut en déduire l'usure des contacts qui est alors convertie en durée de vie résiduelle des contacts. A cet effet, il est nécessaire d'effectuer une mesure précise du parcours d'induit, à partir du début du déplacement de l'induit jusqu'au début de l'ouverture des contacts. Selon l'invention, les états de commutation au niveau de l'appareil de commutation et au niveau du réseau électrique sont détectés en outre à partir des signaux servant à la détection de l'effet de ressort.
EP98948727A 1997-08-07 1998-08-05 PROCEDE POUR DETERMINER DES DONNEES SPECIFIQUES D'APPAREILS DE COMMUTATION AU NIVEAU DE CONTACTS INSTALLES DANS LESDITS APPAREILS DE COMMUTATION ET/OU DONNEES SPECIFIQUES DE FONCTIONNEMENT DANS UN RESEAU COMMUTE DE FAçON CORRESPONDANTE Expired - Lifetime EP1002325B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19734224A DE19734224C1 (de) 1997-08-07 1997-08-07 Verfahren und Vorrichtung zur Bestimmung von schaltgerätespezifischen Daten an Kontakten in Schaltgeräten und/oder zur Bestimmung von betriebsspezifischen Daten im damit geschalteten Netz
DE19734224 1997-08-07
PCT/DE1998/002247 WO1999008301A1 (fr) 1997-08-07 1998-08-05 Procede pour determiner des donnees specifiques d'appareils de commutation au niveau de contacts installes dans lesdits appareils de commutation et/ou donnees specifiques de fonctionnement dans un reseau commute de façon correspondante

Publications (2)

Publication Number Publication Date
EP1002325A1 true EP1002325A1 (fr) 2000-05-24
EP1002325B1 EP1002325B1 (fr) 2002-03-20

Family

ID=7838283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98948727A Expired - Lifetime EP1002325B1 (fr) 1997-08-07 1998-08-05 PROCEDE POUR DETERMINER DES DONNEES SPECIFIQUES D'APPAREILS DE COMMUTATION AU NIVEAU DE CONTACTS INSTALLES DANS LESDITS APPAREILS DE COMMUTATION ET/OU DONNEES SPECIFIQUES DE FONCTIONNEMENT DANS UN RESEAU COMMUTE DE FAçON CORRESPONDANTE

Country Status (5)

Country Link
US (1) US6313636B1 (fr)
EP (1) EP1002325B1 (fr)
CN (1) CN1138288C (fr)
DE (2) DE19734224C1 (fr)
WO (1) WO1999008301A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7812696B2 (en) 2004-12-23 2010-10-12 Siemens Aktiengesellschaft Method and device for securely operating a switching device

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945059A1 (de) * 1999-09-20 2001-03-22 Moeller Gmbh Anordnung mit einem Schaltgerät und einer Auswerteeinrichtung zur Ermittlung der Restlebensdauer
US6501356B2 (en) * 1999-09-20 2002-12-31 Moeller Gmbh Method for determining the remaining service life of the switch contacts in an electric switching device and electric switching device with an evaluation unit for carrying out said method
FR2834120B1 (fr) 2001-12-21 2004-02-06 Schneider Electric Ind Sa Procede pour determiner l'usure des contacts d'un appareil interrupteur
US6671632B2 (en) * 2002-05-14 2003-12-30 General Electric Company Methods and apparatus for determining resilience of spring washers
DE10260248B4 (de) * 2002-12-20 2005-07-21 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer eines Schaltgerätes und zugehörige Anordnung
DE10260258B4 (de) * 2002-12-20 2005-02-24 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
DE10260249B4 (de) * 2002-12-20 2005-07-28 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
DE102004053612A1 (de) * 2004-11-02 2006-05-04 Siemens Ag Überwachungsverfahren für eine durch relativ zueinander bewegbare Kontaktstücke begrenzte Trennstrecke eines elektrischen Schaltgerätes sowie zugehörige Vorrichtung zur Ausführung des Überwachungsverfahrens
DE102004062267A1 (de) 2004-12-23 2006-07-13 Siemens Ag Verfahren und Vorrichtung zum sicheren Betrieb eines Schaltgerätes
DE102004062269A1 (de) * 2004-12-23 2006-07-13 Siemens Ag Verfahren und Vorrichtung zum sicheren Betrieb eines Schaltgerätes
FI117256B (fi) * 2005-01-18 2006-08-15 Suomen Pcs Oy Kontaktoritunnistin, kontaktoritunnistinjärjestelmä ja menetelmä kontaktorin yksilöimiseksi
DE102005045095A1 (de) * 2005-09-21 2007-04-05 Siemens Ag Verfahren zum Bestimmen des Abbrandes von Kontakten eines elektromagnetischen Schaltgerätes und elektromagnetisches Schaltgerät mit einer nach diesem Verfahren arbeitenden Einrichtung
US20070101737A1 (en) 2005-11-09 2007-05-10 Masao Akei Refrigeration system including thermoelectric heat recovery and actuation
US7904266B2 (en) * 2007-05-22 2011-03-08 Abb Technology Ag Method and apparatus for calculating the separation time of arcing contacts of a high-volume switchgear
US8143851B2 (en) * 2008-02-15 2012-03-27 Apple Inc. Power source having a parallel cell topology
US20090289603A1 (en) * 2008-05-21 2009-11-26 Apple Inc. Method and apparatus for maintaining a battery in a partially charged state
US8063625B2 (en) * 2008-06-18 2011-11-22 Apple Inc. Momentarily enabled electronic device
DE102008042390A1 (de) * 2008-09-26 2010-04-01 Zf Friedrichshafen Ag Verfahren zur Diagnose von Fehlerzuständen einer im Stern gewickelten Drehfeldmaschine
US20100157502A1 (en) * 2008-12-18 2010-06-24 Caterpillar Inc. System for decoupling a power source from a load
US8450979B2 (en) * 2009-09-30 2013-05-28 Apple Inc. Power adapter with internal battery
US8410783B2 (en) * 2009-09-30 2013-04-02 Apple Inc. Detecting an end of life for a battery using a difference between an unloaded battery voltage and a loaded battery voltage
US8519564B2 (en) 2010-05-12 2013-08-27 Apple Inc. Multi-output power supply
JP5566240B2 (ja) * 2010-09-30 2014-08-06 株式会社キトー 電動巻上下装置用駆動回路の故障検出装置
DE102010041998A1 (de) * 2010-10-05 2012-04-05 Robert Bosch Gmbh Verfahren zur Vorhersage der Einsatzfähigkeit eines Relais oder eines Schützes
FR2981787B1 (fr) * 2011-10-21 2014-08-01 Schneider Electric Ind Sas Procede de diagnostic d'un etat de fonctionnement d'un contacteur et contacteur pour la mise en oeuvre dudit procede
CN104142468A (zh) * 2013-05-08 2014-11-12 深圳市海洋王照明工程有限公司 一种开关性能测试电路
US9897656B2 (en) * 2013-05-16 2018-02-20 Carrier Corporation Method for sensing welded contacts on a switching device
JP6246013B2 (ja) * 2014-02-18 2017-12-13 三菱電機株式会社 三相交流電源用切替回路
JP5855699B2 (ja) 2014-05-09 2016-02-09 ファナック株式会社 電磁接触器の溶着検出機能を有するモータ駆動装置
CN106653480A (zh) * 2015-10-29 2017-05-10 中车大连电力牵引研发中心有限公司 继电器
US10340640B2 (en) 2017-05-04 2019-07-02 Schneider Electric USA, Inc. System and method for determining the current condition of power contacts
CN107808800A (zh) * 2017-10-31 2018-03-16 凯源新创（天津）科技有限公司 一种提升无线交互性能的延时接触器
CN109828198B (zh) * 2019-01-15 2021-04-20 哈尔滨工业大学 一种交流接触器寿命预测模块
EP3971927A1 (fr) 2020-09-16 2022-03-23 ABB Schweiz AG Commande de contacteur
US11967470B2 (en) * 2021-09-02 2024-04-23 Rockwell Automation Technologies, Inc. Method and device for determining contact thickness change of a contactor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505818A1 (de) * 1985-02-20 1986-08-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Ueberwachungs- und kontrolleinrichtung fuer schaltgeraete
US5270900A (en) * 1989-06-01 1993-12-14 Allied-Signal Inc. Solenoid response detector
DE4028721C2 (de) * 1990-09-10 1995-05-11 Siemens Ag Verfahren und Anordnung zur Ermittlung der Restlebensdauer von Schaltgeräten
DE4408631C2 (de) * 1994-03-09 1996-11-14 Siemens Ag Einrichtung zur Funktionssicherheitsüberwachung von Leistungsschalteinrichtungen (Diagnosegerät)
US5629869A (en) * 1994-04-11 1997-05-13 Abb Power T&D Company Intelligent circuit breaker providing synchronous switching and condition monitoring
DE4427006A1 (de) * 1994-07-29 1996-02-01 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung
DE19603319A1 (de) * 1996-01-31 1997-08-07 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung
DE19603310A1 (de) * 1996-01-31 1997-08-07 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9908301A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7812696B2 (en) 2004-12-23 2010-10-12 Siemens Aktiengesellschaft Method and device for securely operating a switching device

Also Published As

Publication number Publication date
DE59803443D1 (de) 2002-04-25
US6313636B1 (en) 2001-11-06
CN1138288C (zh) 2004-02-11
WO1999008301A1 (fr) 1999-02-18
DE19734224C1 (de) 1999-02-04
EP1002325B1 (fr) 2002-03-20
CN1267392A (zh) 2000-09-20

Similar Documents

Publication Publication Date Title
EP1002325B1 (fr) PROCEDE POUR DETERMINER DES DONNEES SPECIFIQUES D'APPAREILS DE COMMUTATION AU NIVEAU DE CONTACTS INSTALLES DANS LESDITS APPAREILS DE COMMUTATION ET/OU DONNEES SPECIFIQUES DE FONCTIONNEMENT DANS UN RESEAU COMMUTE DE FAçON CORRESPONDANTE
EP0878015B1 (fr) Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe
EP0694937B1 (fr) Procédé et dispositif pour déterminer la vie résiduelle de contacts dans les appareils de commutation
DE112012001189B4 (de) Verfahren, Systeme und Einrichtungen zum Erkennen paralleler elektrischer Fehlerlichtbögen
EP0777907A2 (fr) Appareil de commutation electromecanique et systeme comportant plusieurs appareils de ce type
DE69601218T3 (de) Elektrische differentialschutzvorrichtung mit prüfkreis
EP0878016B1 (fr) Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe
EP1911058A1 (fr) Commutateur de securite pour commander un dispositif relevant de la securite, afin de le mettre dans un etat de securite
DE102017217040B4 (de) Fehlerstromschutzschalter
EP1402616A1 (fr) Machine synchrone
EP1019997B1 (fr) Procede de surveillance de parametres d'etat dans un appareil de commutation, et dispositif utilise a cet effet
EP1478069A1 (fr) Dispositif de protection sensible à tout courant de défaut
DE102019206267B3 (de) Schutzschalter
EP1986203A1 (fr) Procédé pour détecter une couche d'isolement de contact dans un élément de commutation ayant des contacts et un commutateur ayant un tel élément de commutation
EP2523304A1 (fr) Appareil de chargement de batterie et son procédé
WO2018215175A1 (fr) Démarreur progressif à capacité de diagnostic, procédé de diagnostic et ensemble moteur
DE102021203218B4 (de) Verfahren zur Überwachung der Funktionsfähigkeit eines Hochspannungsschalters, Hochspannungsschalter, Computerprogrammprodukt und computerlesbares Medium
EP0638812A2 (fr) Dispositif de contrôle de défauts électriques dans un déclencheur d'un appareillage électrique
EP0734932B1 (fr) Dispositif de surveillance pour installations adjustables en plein air par entraínement à courant triphasé
EP1051786B1 (fr) Configuration de circuit de protection
EP0678890A1 (fr) Méthode et dispositif pour la détection de l'état des disjoncteurs de ligne
DE202004014580U1 (de) Elektronischer Schutzschalter mit einstellbarer Auslöse-Charakteristik
DE19817944A1 (de) Schalteinrichtung für eine elektrische Schaltanlage
DE102019220444A1 (de) Fernantrieb und Parametrier-Verfahren
DE9320915U1 (de) Einrichtung zur Überwachung eines Auslösekreises eines elektrischen Betriebsmittels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000121

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010523

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 59803443

Country of ref document: DE

Date of ref document: 20020425

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20021223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050805

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060809

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20101018

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130301

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59803443

Country of ref document: DE

Effective date: 20130301