EP0878016A1 - Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe - Google Patents

Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe

Info

Publication number
EP0878016A1
EP0878016A1 EP97914100A EP97914100A EP0878016A1 EP 0878016 A1 EP0878016 A1 EP 0878016A1 EP 97914100 A EP97914100 A EP 97914100A EP 97914100 A EP97914100 A EP 97914100A EP 0878016 A1 EP0878016 A1 EP 0878016A1
Authority
EP
European Patent Office
Prior art keywords
voltage
switching
contact
armature
measured
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
EP97914100A
Other languages
German (de)
English (en)
Other versions
EP0878016B1 (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 EP0878016A1 publication Critical patent/EP0878016A1/fr
Application granted granted Critical
Publication of EP0878016B1 publication Critical patent/EP0878016B1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures

Definitions

  • the invention relates to a method for determining the remaining service life of contacts in switching devices, in particular contactor contacts, the so-called contact pressure at the switching path being detected as a replacement criterion for the erosion and for determining the erosion of the contact pieces Pressure change during the switch-off process is measured and converted as the remaining service life, for which purpose a time measurement of the armature path from the start of the armature movement to the beginning of the contact opening takes place in the contactor drive consisting of armature with magnetic coil and associated yoke.
  • the invention relates to the associated arrangement for carrying out the method with an evaluation device for displaying the remaining service life.
  • the time signals required for this are firstly detected by interrupting an auxiliary current path via the armature and yoke of the magnetic drive and via the contact voltage at the main contact pieces and converted into defined voltage pulses, for which purpose measuring lines have to be attached.
  • Attaching the measuring lines (6 pieces for three-phase current) for evaluating the contact voltages can be regarded as problematic in that a) a spread of voltage from the feed-in side of the contactor to the load side cannot be ruled out, b) the required dielectric strength (8 kV ) leads to an increased outlay in the evaluation circuit, and c) an integration of the measuring lines in the contactor and their connection to a plug connection requires constructive and safety-related change measures.
  • the object of the invention is therefore to propose a method and the associated arrangement in which the start of the contact opening does not have to be determined via measuring lines both on the supply side and on the load side of the main current paths.
  • the object is achieved according to the invention by measuring the contact opening on the load side of the monitored switching device and by a voltage-free signaling of the start of the armature movement.
  • the start of the contact opening of the most rapidly burning contact pieces of one of the switching poles is preferably detected by measuring the switching voltage as a change in voltage at an artificial star point on the load side of the monitored switching device, from which, in addition to the start of the armature movement, the remaining service life of the main contactor - pieces can be determined.
  • a voltage-free signal line is connected to the armature and between the switching device and the evaluation device Yoke of the magnetic drive of the switching device available.
  • the evaluation device is therefore located on the load side between the switching device and the electrical consumer.
  • voltage-free signaling is understood to be the electrical contacting between armature and yoke, in contrast to a voltage signal, for example the contact voltage at the main contacts.
  • FIG. 2 the generation of the time signal for the first-opening main current path of contactors during the switching off process in
  • Three-phase networks IG 3 the example of the remaining service life recording especially for a reversing contactor circuit and 4 shows the detection of the remaining service life of contactors when switching off in DC networks.
  • the evaluation device 100 is located on the load side 10 between the protection 1 and the electrical consumer 20, for example a motor, and is via a first Monitoring module 101 contacted to detect the opening of contacts with the outer conductors L1, L2, L3.
  • a two-wire communication line 8 connects the armature / yoke contact 7 of the contactor 1 to a second monitoring module 102 for detecting the armature opening. From the time signals supplied by the monitoring modules 101 and 102, a microprocessor 105 determines the current contact pressure and, from this, the electrical remaining service life of the main contact pieces.
  • the value of the remaining service life determined by the evaluation device 100 is displayed on an output unit 106 and can be output via a bus system for further processing.
  • the time signals from which the remaining service life is determined are subject to fluctuations in time which result from mechanical tolerances and from the decay of the magnetic force.
  • the time difference between the time signals can therefore differ by a few 1/10 ms between two successive evaluations.
  • the remaining service life of a moving average for example, it is determined the last 10 measurements. This is an accuracy considered realistic when determining the contact pressure of 1/10 mm. Incorrect evaluations when determining the time difference can be avoided by evaluating only those time signals that lie within a predefined time window.
  • FIG. 2 shows an example of a circuit for generating a time signal t * at the start of contact opening of the most burned 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 an "artificial" star point 15.
  • the electronic ground potential M can be tapped.
  • the time signal t kl ie the voltage signal at the "artificial" star point 15, is processed according to its polarity via one of two comparators 18 and 18 ', the outputs of which are coupled via an OR switching element 19 to the signal output of the monitoring module for the contact opening.
  • FIG. 3 shows a device for remaining life detection using the example of a contactor reversing starter with two contactors 1 and 2:
  • a contactor reversing starter with two contactors 1 and 2:
  • three-phase motors there are a large number of different connection conditions for controlling the speeds and the direction of rotation.
  • An overload relay 210 is usually located on the load side of contactor 1 or 2
  • overload relay 210 and the device for remaining life detection in a common control device. As already described in the earlier patent application DE 44 27 006 A0, this could have additional functions for monitoring the switching state, so that the end result would be a 'general' control device 200 for monitoring the entire electrical system. In the example of FIG. 3, only a second measuring channel in the monitoring module 202 for armature opening is necessary to record the remaining service life of the two contactors 1 and 2.
  • a microprocessor 205 assigns the calculated remaining service life to the contactor represented by the signaling measuring channel.
  • three-phase networks in addition to three-pole consumers, four-pole consumers, e.g. ohmic loads, switched to the network by means of electrical switching devices or separated from it.
  • These electrical switching devices have four switching poles, of which three switching poles are connected to the outer conductors L1, L2, L3, while the fourth switching pole is connected to the neutral conductor.
  • Each of these four switching poles is subject to contact erosion when the four-pole consumer is switched on and off, so that it is necessary to monitor the state of wear of all contact pieces and to determine the remaining service life depending on the most burned-off contact pieces.
  • the latter is realized by measuring the switching voltage of one of the three switching poles, which are connected to the outer conductors L1, L2, L3, at the artificial star point 15 and the switching voltage of the fourth switching pole, which is connected to the neutral conductor N, at the neutral conductor N. Both the voltage of the artificial star point 15 and the voltage of the neutral conductor N on the load side 10 of the monitored switching device 1 are detected, and the differential voltage of both voltage values is evaluated as the switching voltage of the first opening, most burned-off contact pieces.
  • the measuring lines are connected to the load side 10.
  • the block capacitor C serves to suppress the DC voltage component, the associated limiting resistors R1 and R2 with the Zener diode for voltage limitation and in particular the optocoupler 35 for potential-free measurement of the contact voltage.
  • a microprocessor 305 determines the contact pressure in a corresponding manner and from this the remaining service life of the main contactor contacts.
  • the values determined by the microprocessors can be displayed directly via associated output units or else on a system for data transmission. supply, in particular a bus system, for further evaluation.

Landscapes

  • Keying Circuit Devices (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

Pour déterminer la durée de vie résiduelle de contacts de mise à la terre, en tant que critère de remplacement en cas d'usure, il a d'ores et déjà été proposé de détecter la pression de contact exercée au niveau de l'écartement entre contacts et de mesurer la modification de la pression de contact pendant le processus de mise hors service, afin de déterminer l'usure des plots de contact et de convertir ces données en durée de vie résiduelle. A cet effet, le temps que met l'induit pour se déplacer, du début de son mouvement jusqu'au début de l'ouverture du contact est mesuré au niveau de la commande magnétique comprenant un induit et des bobines excitatrices, ainsi qu'une culasse associée. Selon l'invention, la valeur mesurée du signal temporel tk de l'ouverture du contact est déterminée côté charge de l'appareil de commutation contrôlé, la valeur mesurée du signal temporel tA étant déterminée par émission d'un signal sans tension intervenant au début du mouvement de l'induit. La tension de commutation est mesurée en tant que variation de tension en un point neutre artificiel, notamment en cas d'utilisation dans des réseaux triphasés. Le système associé comprend une ligne d'acheminement des signaux (20) sans tension entre l'appareil de commutation (1) et l'appareil d'évaluation (100, 200, 300).
EP97914100A 1996-01-31 1997-01-29 Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe Expired - Lifetime EP0878016B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19603310A DE19603310A1 (de) 1996-01-31 1996-01-31 Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung
DE19603310 1996-01-31
PCT/DE1997/000173 WO1997028548A1 (fr) 1996-01-31 1997-01-29 Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe

Publications (2)

Publication Number Publication Date
EP0878016A1 true EP0878016A1 (fr) 1998-11-18
EP0878016B1 EP0878016B1 (fr) 1999-09-22

Family

ID=7784059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914100A Expired - Lifetime EP0878016B1 (fr) 1996-01-31 1997-01-29 Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe

Country Status (5)

Country Link
US (1) US6359440B2 (fr)
EP (1) EP0878016B1 (fr)
CN (1) CN1068956C (fr)
DE (2) DE19603310A1 (fr)
WO (1) WO1997028548A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834120A1 (fr) * 2001-12-21 2003-06-27 Schneider Electric Ind Sa Procede pour determiner l'usure des contacts d'un appareil interrupteur

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19603319A1 (de) 1996-01-31 1997-08-07 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung
DE19734224C1 (de) 1997-08-07 1999-02-04 Siemens Ag Verfahren und Vorrichtung zur Bestimmung von schaltgerätespezifischen Daten an Kontakten in Schaltgeräten und/oder zur Bestimmung von betriebsspezifischen Daten im damit geschalteten Netz
DE19915234A1 (de) * 1999-04-03 2000-10-05 Moeller Gmbh Schaltungsanordnung mit Sicherheitsfunktion
DE19948551C1 (de) 1999-10-08 2001-07-05 Siemens Ag Verfahren zur Vergleichmäßigung von Gesamtabbränden eines elektromagnetischen Schaltgeräts und hiermit korrespondierendes elektromagnetisches Schaltgerät
DE10028559C1 (de) * 2000-06-09 2001-11-22 Siemens Ag Elektromagnetisches Schaltgerät, insbesondere Schütz
DE10051161C1 (de) * 2000-10-16 2002-03-07 Siemens Ag Verfahren und Vorrichtung zur Reduzierung des Kontaktabbrandes eines Schaltgerätes
SE0203382L (sv) * 2002-11-15 2004-05-16 Volvo Lastvagnar Ab System och metod för att diagnostisera stötdämpare
DE10260258B4 (de) * 2002-12-20 2005-02-24 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
DE10260248B4 (de) * 2002-12-20 2005-07-21 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer eines Schaltgerätes und zugehörige Anordnung
DE10260249B4 (de) * 2002-12-20 2005-07-28 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
DE102004002173A1 (de) * 2004-01-15 2005-08-04 Abb Technology Ag Verfahren zur Untersuchung eines Leistungsschalters
JP5188812B2 (ja) * 2004-12-23 2013-04-24 シーメンス アクチエンゲゼルシヤフト 開閉装置を安全に作動させる方法および装置
US20070101737A1 (en) 2005-11-09 2007-05-10 Masao Akei Refrigeration system including thermoelectric heat recovery and actuation
US7310953B2 (en) * 2005-11-09 2007-12-25 Emerson Climate Technologies, Inc. Refrigeration system including thermoelectric module
CN1328591C (zh) * 2005-12-26 2007-07-25 通领科技集团有限公司 接地故障断路器寿命终止检测保护方法及其电路
FR2940509B1 (fr) * 2008-12-19 2010-12-10 Schneider Electric Ind Sas Appareil electrique interrupteur a fonctionnement optimise
JP5192585B2 (ja) * 2009-02-23 2013-05-08 三菱電機株式会社 開閉装置の余寿命診断方法及び装置
US20110062960A1 (en) * 2009-09-15 2011-03-17 Lenin Prakash Device and method to monitor electrical contact status
CN101806860B (zh) * 2010-03-30 2012-01-18 哈尔滨工业大学 可调装配参数的电磁继电器寿命测试装置
DE102011107110B4 (de) 2011-07-12 2013-04-18 Marcel P. HOFSAESS Verfahren zum Umgeben eines elektrischen Bauteils mit einem Schutzgehäuse sowie elektrisches Bauteil mit einem Schutzgehäuse
CN104316794B (zh) * 2014-10-22 2017-03-01 哈尔滨工业大学 用于交流接触器触头材料电性能测试的装置及采用该装置测试触头材料电性能的方法
US10340640B2 (en) 2017-05-04 2019-07-02 Schneider Electric USA, Inc. System and method for determining the current condition of power contacts
CN111142015B (zh) * 2018-11-06 2022-12-06 西门子股份公司 开关装置触头状态的监测方法及监测电路
CN110988666B (zh) * 2019-12-03 2021-11-02 许昌开普检测研究院股份有限公司 一种用于检测继电器触点承载电压、接通承载电流的装置
CN111458632A (zh) * 2020-04-17 2020-07-28 四川汉舟电气股份有限公司 一种分析断路器寿命老化的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1764678U (de) * 1955-08-29 1958-04-10 Siemens Ag Anordnung zur ueberwachung des schaltstueckabbrandes.
US4319193A (en) * 1980-05-14 1982-03-09 Northern Telecom Limited Testing of relays and similar devices
JPH03276530A (ja) * 1990-03-27 1991-12-06 Toshiba Corp リレー装置
DE4028721C2 (de) * 1990-09-10 1995-05-11 Siemens Ag Verfahren und Anordnung zur Ermittlung der Restlebensdauer von Schaltgeräten
US5115189A (en) * 1991-02-06 1992-05-19 Hewlett-Packard Company Anti-aliasing dithering method and apparatus for low frequency signal sampling
US5243291A (en) * 1991-10-11 1993-09-07 Shinkoh Electric Co., Ltd. Electromagnetic contactor deposition detecting apparatus which detects load current and switch current
DE4137543A1 (de) * 1991-11-12 1993-05-13 Elpro Ag Verfahren zur ankerstrommessung im wechselstromkreis eines stromrichters
DE4300620C1 (de) * 1993-01-13 1994-07-14 Systemtechnik Leber Verfahren zur Überwachung des Stromflusses durch einen elektrischen Schalter
DE4417694A1 (de) * 1994-05-20 1995-11-23 Licentia Gmbh Verfahren und Schaltungsanordnung zur Messung der Schaltzeit eines einen elektromagnetischen Auslöser enthaltenden Schaltgeräts
DE4427006A1 (de) * 1994-07-29 1996-02-01 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 WO9728548A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834120A1 (fr) * 2001-12-21 2003-06-27 Schneider Electric Ind Sa Procede pour determiner l'usure des contacts d'un appareil interrupteur
WO2003054895A1 (fr) * 2001-12-21 2003-07-03 Schneider Electric Industries Sas Procede pour determiner l'usure des contacts d'un appareil interrupteur

Also Published As

Publication number Publication date
DE59700469D1 (de) 1999-10-28
DE19603310A1 (de) 1997-08-07
US20010019268A1 (en) 2001-09-06
US6359440B2 (en) 2002-03-19
CN1208498A (zh) 1999-02-17
CN1068956C (zh) 2001-07-25
EP0878016B1 (fr) 1999-09-22
WO1997028548A1 (fr) 1997-08-07

Similar Documents

Publication Publication Date Title
EP0878016A1 (fr) Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe
DE19734224C1 (de) Verfahren und Vorrichtung zur Bestimmung von schaltgerätespezifischen Daten an Kontakten in Schaltgeräten und/oder zur Bestimmung von betriebsspezifischen Daten im damit geschalteten Netz
EP0878015B1 (fr) Procede de determination de la duree de vie residuelle de contacts dans des appareils de commutation et systeme associe
DE69838404T2 (de) Verfahren zur Erfassung von Lichtbogenfehler in einer Übertragungsleitung
DE10212493A1 (de) Anordnung zur Isolationsüberwachung eines elektrisch von Massepotential einer Einrichtung isolierten Gleichstromnetzes
EP2695266A1 (fr) Disjoncteur à courant de défaut
DE102018114540B3 (de) Verfahren zur Erkennung von Lichtbögen in Gleichstromkreisen
DE102019204272B4 (de) Fehlerstromschutzeinheit und Verfahren
DE69411086T2 (de) Eine Erdschlusseinheit
DE102013106100A1 (de) Stomsensoranordnung mit Messspulen
DE202007019127U1 (de) Vorrichtung zur Messung eines von einem Wechselstromanteil überlagerten Gleichstromanteils eines in Leitern von Wechselstrombahnen fließenden Stroms
DE69532627T2 (de) Testanordnung für ein mit amagnetischen Stromfühlern verbundenes Sicherheitsrelais
EP3387453A1 (fr) Contacteur de puissance et procédé de test du fonctionnement d'un contacteur de puissance
WO1993007503A1 (fr) Procede et dispositif de mesure correspondant pour l'evaluation de l'arc electrique sur les contacts glissants de machines electriques
DE19732103A1 (de) Einrichtung zur Anzeige der Richtung von Erdschlußströmen und Kurzschlüssen in Mittelspannungsnetzen
DE69325381T2 (de) Sensor zur fehlerstromerfassung
EP1051786B1 (fr) Configuration de circuit de protection
DE102023205036B3 (de) Verfahren zum Erkennen eines seriellen Lichtbogens in einem Stromkreis
EP0638812A2 (fr) Dispositif de contrôle de défauts électriques dans un déclencheur d'un appareillage électrique
DE19516092B4 (de) Gefahrenmeldeanlage mit wenigstens einer Schirmleitung
DE3226266C1 (de) Ausfall-Warnvorrichtung für elektrische Verbraucher
EP1273924B1 (fr) Appareil de détection des contaminations électriquement conductrices du côté contact d'un connecteur
DE4333400C2 (de) Elektrische Maschine mit einer Schaltungsanordnung zur Erfassung von Windungsschlüssen
DE102012020718A1 (de) Verfahren zur Detektion und zum Abschalten eines elektrischen Kurzschlusses oder eines Lichtbogens und Energiespeicher
EP1665487A1 (fr) Procede pour commander un discontacteur electronique pour disjoncteur de puissance basse tension

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: 19980720

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990126

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

REF Corresponds to:

Ref document number: 59700469

Country of ref document: DE

Date of ref document: 19991028

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

Ref country code: DE

Payment date: 20110321

Year of fee payment: 15

Ref country code: FR

Payment date: 20110120

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120928

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: 20120801

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59700469

Country of ref document: DE

Effective date: 20120801

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: 20120131