EP0984477A2 - Verfahren zur Herstellung eines Jochs eines Magnetauslösers und Vorrichtung zur Durchführung dieses Verfahrens - Google Patents
Verfahren zur Herstellung eines Jochs eines Magnetauslösers und Vorrichtung zur Durchführung dieses Verfahrens Download PDFInfo
- 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
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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)
- Manufacture Of Motors, Generators (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Electromagnets (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
Description
- 1, 2
- Klemmbacken
- 3
- Dreipunktauflage
- 4, 6
- Jochbleche
- 5
- Positionierelement
- 7
- Kapazitätsmessgerät
- 8
- Regler
- 9
- Regelkreis
- 10
- Luftspalt
- 11
- Verbindungspunkte
- 12
- Fügevorrichtung
- Cist
- gemessene Kapazität
- (CSollmax - CSollmin)
- Kapazitätssollwert
- y
- Abstandskorrektur
- ySchrumpf
- Abstandskorrekturwert für Schrumpfung
Claims (12)
- Verfahren zur Herstellung eines zwei feststehende Bleche (4, 6) enthaltenden Jochs eines vorzugsweise in einem Fehlerstrom-Schutzschalter einsetzbaren Magnetauslösers, bei dem die beiden Jochbleche (4, 6) unter Bildung eines Luftspalts (10) mit einem vorgegebenen Montageabstand zueinander gehalten und nach Anbringen von Verbindungspunkten (11) mit einem die magnetischen Eigenschaften des Auslösers bestimmenden mittleren Abstand zueinander fixiert werden, dadurch gekennzeichnet, dass vor dem Anbringen der Verbindungspunkte (11) Signalanschlüsse (S1, S2, S3, S4) einer Vorrichtung zur Ermittlung der Kapazität (Cist) eines von den Jochblechen (4, 6) und dem dazwischenliegenden Luftspalt (10) gebildeten Kondensators an die Jochbleche (4, 6) geführt werden, dass die Kapazität (Cist) in Abhängigkeit vom Jochblechabstand (y) periodisch ermittelt wird, dass die ermittelte Kapazität (Cist) in jeder Periode mit einem vorgegebenen Kapazitätssollwert (CSollmax - CSollmin) verglichen wird, und dass nach dem Erreichen des Sollwertes (CSollmax - CSollmin) das Ermitteln der Kapazität beendet und der beim Sollwert vorhandene Jochblechabstand zumindest vorübergehend konstant gehalten wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Montageabstand eingestellt wird durch Veränderung des konstant gehaltenen Jochblechabstands um einen vorgebenen Korrekturwert (ySchrumpf), wobei der Korrekturwert derart bestimmt ist, dass sich der mittlere Jochblechabstand beim nachfolgenden Anbringen der Verbindungspunkte (11) einstellt.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass beim Anbringen der Verbindungspunkte (11) in einem Schweissverfahren der konstante Jochblechabstand durch den Korrekturwert (ySchrumpf) vergrössert wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der zunächst konstant gehaltene Jochblechabstand als Montageabstand dient und der Kapazitätssollwert (CSollmax - CSollmin) zugleich derart bestimmt ist, dass sich der mittlere Jochblechabstand beim nachfolgenden Anbringen der Verbindungspunkte (11) einstellt.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass beim Anbringen der Verbindungspunkte (11) in einem Schweissverfahren der Kapazitätssollwert (CSollmax - CSollmin) kleiner ist als der Kapazitätswert des Kondensators, bei dem die Jochbleche (4, 6) den mittleren Abstand aufweisen.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass nach dem Erreichen des konstanten Jochblechabstands und vor dem Anbringen der Verbindungspunkte (11) die Messelektroden (S1, S2, S3, S4) entfernt werden.
- Vorrichtung zur Durchführung des Verfahren nach einem der Ansprüche 1 bis 6 mit je zwei vertikal übereinander angeordneten, gegeneinander verschiebbaren Klemmbacken (1, 2) zur Aufnahme je eines der beiden Jochbleche (4, 6) und mit einer die Verbindungspunkte (11) randseitig an den Jochblechen (4, 6) anbringenden Fügevorrichtung (12), dadurch gekennzeichnet, dass zusätzlich eine Vorrichtung zur Ermittlung der Kapazität (Cist) eines von den Jochblechen (4, 6) und dem dazwischenliegenden Luftspalt (10) gebildeten Kondensators vorgesehen ist mit an die Jochbleche (4, 6) führbaren Signalanschlüssen (S1, S2, S3, S4), von denen je zwei der Zuführung eines messwerterzeugenden Signals und je zwei der Aufnahme eines messwertproportionalen Signals dienen.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Vorrichtung zur Ermittlung der Kapazität ein Kapazitätsmessgerät (7) ist.
- Vorrichtung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass die der Aufnahme des messwertproportionalen Signals dienenden Signalanschlüsse auf einen Regler (8) eines Regelkreises (9) wirken, der den vor dem Anbringen der Verbindungspunkte (11) zunächst konstant gehaltenen Abstand der Jochbleche (4, 6) einstellt.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass im Regler (9) Mittel zum Vergleich der periodisch ermittelten Kapazität (Cist) mit dem vorgegebenen Kapazitätssollwert (CSollmax - CSollmin) vorgesehen sind sowie Mittel zur Bildung eines Stellsignals (y) an eine Vorrichtung zum Ändern des Abstandes der beiden Klemmbacken (1, 2).
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Vorrichtung zur Ermittlung der Kapazität (Cist) einen mit den Signalanschlüsse (S1, S2, S3, S4) verbundenen Resonanzfrequenzmesser zum Messen der Resonanzfrequenz eines die Kapazität und eine Induktivität vorbestimmter Grösse enthaltenden Schwingkreises aufweist sowie einen dem Resonanzfrequenzmesser nachgeschalteten Computer zum Errechnen der zu ermittelnden Kapazität (Cist) aus der vom Resonanzfrequenzmesser gemessenen Resonanzfrequenz.
- Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass ferner eine Lagerung (3) zur Auflage des in der unteren Klemmbacke (1) festsetzbaren Jochblechs (4) sowie eine Positionierelement (5) zur Beaufschlagung jeweils eines der beiden Jochbleche (4, 6) mit Haltekraft beim Festsetzen des Jochbleches (4, 6) in der zugeordneten oberen (2) oder unteren Klemmbacke (1) vorgesehen sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19839637 | 1998-08-31 | ||
| DE19839637A DE19839637A1 (de) | 1998-08-31 | 1998-08-31 | Verfahren zur Herstellung eines Jochs eines Magnetauslösers und Vorrichtung zur Durchführung dieses Verfahrens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0984477A2 true EP0984477A2 (de) | 2000-03-08 |
| EP0984477A3 EP0984477A3 (de) | 2001-03-28 |
| EP0984477B1 EP0984477B1 (de) | 2005-03-30 |
Family
ID=7879319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99810731A Expired - Lifetime EP0984477B1 (de) | 1998-08-31 | 1999-08-13 | Verfahren zur Herstellung eines Jochs eines Magnetauslösers und Vorrichtung zur Durchführung dieses Verfahrens |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0984477B1 (de) |
| AT (1) | ATE292323T1 (de) |
| DE (2) | DE19839637A1 (de) |
| ES (1) | ES2241253T3 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012169975A1 (en) | 2011-06-06 | 2012-12-13 | Eti Elektroelement D.D. | Electromagnetic relay with improved yoke, in particular a relay for interruption of electric circuit in the case of diffferential current, and switch comprising such relay |
| DE102018204673B4 (de) * | 2018-03-27 | 2025-06-18 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines Magnetjochs |
| EP4625464A1 (de) | 2024-03-28 | 2025-10-01 | Hager-Electro Sas | Verfahren zur oberflächenbehandlung eines ankers eines elektromagnetischen auslösers, beschlag und elektromagnetischer auslöser |
Family Cites Families (8)
| 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 |
| DE3531051A1 (de) * | 1985-08-30 | 1987-03-12 | Bbc Brown Boveri & Cie | Fehlerstromausloeser |
| 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 |
| EP0786789B2 (de) * | 1996-01-23 | 2009-01-14 | ABB Schweiz AG | Joch für einen vorzugsweise in einem Fehlerstrom-Schutzschalter einsetzbaren Magnetauslöser |
-
1998
- 1998-08-31 DE DE19839637A patent/DE19839637A1/de not_active Withdrawn
-
1999
- 1999-08-13 EP EP99810731A patent/EP0984477B1/de not_active Expired - Lifetime
- 1999-08-13 ES ES99810731T patent/ES2241253T3/es not_active Expired - Lifetime
- 1999-08-13 DE DE59911831T patent/DE59911831D1/de not_active Expired - Lifetime
- 1999-08-13 AT AT99810731T patent/ATE292323T1/de active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012169975A1 (en) | 2011-06-06 | 2012-12-13 | Eti Elektroelement D.D. | Electromagnetic relay with improved yoke, in particular a relay for interruption of electric circuit in the case of diffferential current, and switch comprising such relay |
| DE102018204673B4 (de) * | 2018-03-27 | 2025-06-18 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines Magnetjochs |
| EP4625464A1 (de) | 2024-03-28 | 2025-10-01 | Hager-Electro Sas | Verfahren zur oberflächenbehandlung eines ankers eines elektromagnetischen auslösers, beschlag und elektromagnetischer auslöser |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19839637A1 (de) | 2000-03-02 |
| ES2241253T3 (es) | 2005-10-16 |
| DE59911831D1 (de) | 2005-05-04 |
| EP0984477A3 (de) | 2001-03-28 |
| ATE292323T1 (de) | 2005-04-15 |
| EP0984477B1 (de) | 2005-03-30 |
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