EP0984477A2 - Procédé de fabrication d'une culasse pour déclencheur magnétique et dispositif pour executer ce procédé - Google Patents

Procédé de fabrication d'une culasse pour déclencheur magnétique et dispositif pour executer ce procédé Download PDF

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Publication number
EP0984477A2
EP0984477A2 EP99810731A EP99810731A EP0984477A2 EP 0984477 A2 EP0984477 A2 EP 0984477A2 EP 99810731 A EP99810731 A EP 99810731A EP 99810731 A EP99810731 A EP 99810731A EP 0984477 A2 EP0984477 A2 EP 0984477A2
Authority
EP
European Patent Office
Prior art keywords
yoke
capacitance
connection points
distance
sheets
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
EP99810731A
Other languages
German (de)
English (en)
Other versions
EP0984477A3 (fr
EP0984477B1 (fr
Inventor
Dominique Girardin
Gerhard Schneider
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 Schweiz AG
Original Assignee
ABB CMC Carl Meier AG
CMC Carl Maier and Cie 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 ABB CMC Carl Meier AG, CMC Carl Maier and Cie AG filed Critical ABB CMC Carl Meier AG
Publication of EP0984477A2 publication Critical patent/EP0984477A2/fr
Publication of EP0984477A3 publication Critical patent/EP0984477A3/fr
Application granted granted Critical
Publication of EP0984477B1 publication Critical patent/EP0984477B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/327—Manufacturing or calibrating methods, e.g. air gap treatments

Definitions

  • the invention is based on a method for producing a two fixed sheets containing yokes, preferably in one Residual current circuit breaker (Fl switch) insertable magnetic release after the Preamble of claim 1.
  • a yoke is used to guide a constant magnetic flux from one permanent magnet to one movable armature of the magnetic release. Will the permanent magnetic flux through one emitted by a trip coil and approximately to a fault current
  • the signal to be fed back is weakened by a preloaded spring loaded anchor is lifted from the yoke and then triggers a force transmission element.
  • the force transmission element acts on a key switch, which causes an opening of the contact arrangement of the Fl switch.
  • a yoke specified in this prior art for one in one Fl-switch built-in magnetic trigger essentially has two fixed arranged yoke plates, which by means of web-shaped Connection points are joined together, and between them are magnetic poorly conductive diaphragm is an air gap approx. 20 to 100 ⁇ m thick.
  • the Air gap separates the two yoke sheets to form a magnetic one Resistance of a predetermined size and thus prevents that of one Permanent magnet permanent magnetic flux fed into the magnetic circuit is short-circuited.
  • the two yoke sheets are used in the manufacture of the known yoke usually each in one of two vertically one above the other and fixed against each other movable jaws.
  • the sheets are then after interposing spacers with formation of the air gap against each other and by attaching connection points in one Laser welding process fixed.
  • the spacers are removed.
  • the between is the magnetic resistance of the given size lying on the two yoke plates then through the air layer between the yoke sheets and the geometric Dimensions of the connection points designed as welding points are determined.
  • the object of the invention is as set out in the claims is based on creating a method of the type mentioned at the beginning with which yokes of high precision can be manufactured in a simple and cost-effective manner can specify, as well as a device for performing this method.
  • the method according to the invention captures by measuring the capacity of the the two yoke plates and the air gap between them
  • the capacitor also indirectly affects the thickness of the air gap. Because of the analogy of electric and magnetic field is also the thickness of the Air gap dependent and for the release power of the containing the yoke Magnetic trigger detects pivotal magnetic flux. By changing of the air gap volume due to displacement of the yoke plates perpendicular to each other In this way, information about the average yoke plate distance and thus also about the size of the magnetic River, which is an extremely precise manufacture of the yoke enable.
  • the capacitance measurement used in the method according to the invention takes into account the restless surface topography of the yoke sheets and thus delivers direct image of the magnetic coupling between the yoke plates.
  • she is insensitive to external interference, such as temperature, humidity, Air pressure, pollution, aging and / or EMC interference has a high Resolution ( ⁇ 1nm) and a clear signal-response behavior and can be due to short settling times (approx. 200 ⁇ s) can be carried out very quickly.
  • the device according to the invention for carrying out the method is distinguished through high flexibility and cycle times in the range of seconds, for example 4 s. This is primarily due to the rapid feasibility of the capacity measurement and the good usability of the determined capacity to form a manipulated variable in a control loop, the controlled variable of which is the thickness of the air gap or the mean The distance between the yoke plates is.
  • the device shown in Figures 1 and 2 has two vertically one above the other arranged jaws 1 and 2, of which the lower jaw 1 stationary and the upper jaw 2 in the vertical direction (double arrow) is slidably arranged.
  • the path that the jaw 2 during a movement in the vertical direction, using a displacement sensor not shown are detected.
  • a three-point support 3 is empty before starting up the device (position A) and is loaded with a yoke plate 4 at the beginning of the manufacturing process (item B).
  • the yoke plate 4 is formed by means of a positioning element 5 designed as a pin pressed with force against the three-point support 3 (position C), and while maintaining the pressure in the lower jaw 1 fixed and aligned (position D).
  • the Positioning element 5 is then moved away (position E) and the manufacturing device then load with a second yoke plate 6 (position F).
  • This yoke sheet will with the positioning element 5 with force against that on the three-point support 3 supported yoke plate 4 pressed (position G) and while maintaining the pressure in the upper jaw 2 fixed (position H).
  • two signal connections S 1 , S 3 and S 2 , S 4 of a capacitance measuring device 7 indicated in FIG. 3 are then guided to the yoke plates 4 and 6 (position J) from above and below.
  • the two signal connections S 1 and S 2 serve to supply a signal generating a measured value to the yoke plates 4 and 6, whereas the two signal connections S 3 and S 4 serve to receive a signal proportional to the measured value from the yoke plates 4 and 6.
  • the signal connections S 3 and S 4 used to receive the signal proportional to the measured value act on a controller 8 of a control circuit 9 which can be removed from FIG.
  • the upper jaw 2 is now moved upwards to form an air gap 10 between the two yoke plates 4 and 6 (position K).
  • the capacitance of the capacitor formed by the yoke plates 4, 6 and the air gap 10 between them is periodically measured as a function of the distance between the yoke plates. It can be seen from FIG. 3 that the measured capacitance C is compared in the control circuit 9 in each measurement period with a predetermined capacitance setpoint lying between an upper limit C setpoint max and a lower limit C setpoint min .
  • a signal y acting as a manipulated variable is output to a device (not shown) for changing the distance between the two clamping jaws 1, 2, through which the clamping jaw 2 continues and thus the distance between the two yoke plates 4, 6 is changed (see Fig. 3: distance correction y). If the measured capacitance and the target value finally match, the capacity measurement is ended and the yoke plate distance at the target value is initially kept constant.
  • the signal connections of the capacitance meter are now moved away (position L).
  • a distance correction y shrinkage is then carried out by moving the clamping jaw 2 (position M and FIG. 3). With this correction, a defined installation value of the yoke plate distance is achieved by changing the initially constant yoke plate distance (position L) by a predetermined correction value. If this installation value is set, the two yoke plates 4, 6 can be fixed by attaching connection points 11 (position O).
  • the correction value y shrinkage is determined in such a way that a desired mean yoke plate distance is established when the connection points 11 are attached.
  • connection points 11 are attached to the edge of the yoke plates 4, 6 by means of a joining device 12. If the connection points 11 are attached in a welding process, preferably in a laser welding process, the yoke sheet spacing, which was initially kept constant, should be increased by the correction value y shrinkage , so as to compensate for the reduction in distance due to shrinkage that occurs during welding (position N). However, the yoke plate distance (position L), which was initially kept constant, can also serve as the installation distance. The nominal capacity value is then to be determined in such a way that the mean yoke plate distance is established when the connection points 11 are subsequently attached. When attaching the connection points 11 in a welding process, the capacitance setpoint should be smaller than the capacitance value of the capacitor, since the shrinkage occurring during welding is then taken into account.
  • a capacitance measuring device 7 another device for determining the capacitance C ist of the capacitor formed by the yoke sheets 4, 6 and the air gap 10 located therebetween can be used.
  • a device can advantageously have a resonance frequency meter connected to the signal connections S 1 , S 2 , S 3 , S 4 and a computer connected downstream of the resonance frequency meter.
  • the resonant frequency meter measures the resonant frequency of the capacitance C and an inductance of predetermined size containing resonant circuit.
  • the computer determines the capacitance C is from the resonance frequency measured by the resonance frequency meter, which is then - as described above - compared to the capacitance setpoint.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Breakers (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Electromagnets (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP99810731A 1998-08-31 1999-08-13 Procédé de fabrication d'une culasse pour déclencheur magnétique et dispositif pour executer ce procédé Expired - Lifetime EP0984477B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19839637A DE19839637A1 (de) 1998-08-31 1998-08-31 Verfahren zur Herstellung eines Jochs eines Magnetauslösers und Vorrichtung zur Durchführung dieses Verfahrens
DE19839637 1998-08-31

Publications (3)

Publication Number Publication Date
EP0984477A2 true EP0984477A2 (fr) 2000-03-08
EP0984477A3 EP0984477A3 (fr) 2001-03-28
EP0984477B1 EP0984477B1 (fr) 2005-03-30

Family

ID=7879319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810731A Expired - Lifetime EP0984477B1 (fr) 1998-08-31 1999-08-13 Procédé de fabrication d'une culasse pour déclencheur magnétique et dispositif pour executer ce procédé

Country Status (4)

Country Link
EP (1) EP0984477B1 (fr)
AT (1) ATE292323T1 (fr)
DE (2) DE19839637A1 (fr)
ES (1) ES2241253T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012169975A1 (fr) 2011-06-06 2012-12-13 Eti Elektroelement D.D. Relais électromécanique à culasse améliorée, en particulier relais pour l'interruption d'un circuit électrique dans le cas d'un courant différentiel, et interrupteur comprenant un tel relais
DE102018204673B4 (de) * 2018-03-27 2025-06-18 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Magnetjochs
EP4625464A1 (fr) 2024-03-28 2025-10-01 Hager-Electro Sas Procédé de traitement de surface d'une armature de déclencheur électromagnétique, armature et déclencheur électromagnétique associés

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT281965B (de) * 1967-01-20 1970-06-10 Siemens Ag Als Auslöser dienender elektrischer Haltemagnet
DE7042556U (de) * 1970-11-18 1971-04-29 Siemens Ag Als Ausloser dienender elektrischer Haltemagnet fur Fehlerstromschutzschalter
JPS5574111A (en) * 1978-11-29 1980-06-04 Hitachi Ltd Transformer
DE8524828U1 (de) * 1985-08-30 1987-07-09 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromauslöser
JP2690908B2 (ja) * 1987-09-25 1997-12-17 株式会社日立製作所 表面計測装置
DE8801399U1 (de) * 1988-02-04 1988-04-28 Siemens AG, 1000 Berlin und 8000 München Haltemagnet-Relais
DE19512604A1 (de) * 1995-04-04 1996-10-10 Rainer Dipl Phys Berthold Magnetisierverfahren für Magnetauslöser von Fehlerstromschutzschaltern
DE59610915D1 (de) * 1996-01-23 2004-03-18 Abb Schweiz Ag Joch für einen vorzugsweise in einem Fehlerstrom-Schutzschalter einsetzbaren Magnetauslöser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012169975A1 (fr) 2011-06-06 2012-12-13 Eti Elektroelement D.D. Relais électromécanique à culasse améliorée, en particulier relais pour l'interruption d'un circuit électrique dans le cas d'un courant différentiel, et interrupteur comprenant un tel relais
DE102018204673B4 (de) * 2018-03-27 2025-06-18 Siemens Aktiengesellschaft Verfahren zur Herstellung eines Magnetjochs
EP4625464A1 (fr) 2024-03-28 2025-10-01 Hager-Electro Sas Procédé de traitement de surface d'une armature de déclencheur électromagnétique, armature et déclencheur électromagnétique associés

Also Published As

Publication number Publication date
EP0984477A3 (fr) 2001-03-28
ATE292323T1 (de) 2005-04-15
ES2241253T3 (es) 2005-10-16
EP0984477B1 (fr) 2005-03-30
DE19839637A1 (de) 2000-03-02
DE59911831D1 (de) 2005-05-04

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