EP0829896B1 - Magnetauslöser, insbesondere für einen Fehlerstromschutzschalter - Google Patents
Magnetauslöser, insbesondere für einen Fehlerstromschutzschalter Download PDFInfo
- Publication number
- EP0829896B1 EP0829896B1 EP97810591A EP97810591A EP0829896B1 EP 0829896 B1 EP0829896 B1 EP 0829896B1 EP 97810591 A EP97810591 A EP 97810591A EP 97810591 A EP97810591 A EP 97810591A EP 0829896 B1 EP0829896 B1 EP 0829896B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic release
- magnetic
- release according
- armature
- spring
- 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.)
- Expired - Lifetime
Links
Images
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
Definitions
- the invention is based on a magnetic release, in particular for a fault current circuit breaker (RCCB), according to the preamble of claim 1.
- a magnetic release has a magnetic powered by a permanent magnet Circle with a U-shaped yoke and with a in the closed state of the magnetic circuit, the ends of the U bridging hinged anchor on.
- a trigger size When a trigger size occurs, about a fault current, will be in one of the two Leg of U plugged trip coil fed a signal.
- This signal generates a magnetic in the trip coil Flow, which the magnetic generated by permanent magnets Continuous flow at the anchor weakens.
- the one of a toughened Spring loaded anchor will weaken the magnetic Permanent flow lifted from the yoke and around a bearing axis pivoted.
- a switch lock For a FI switch this acts Plunger on a switch lock, which opening a contact arrangement of the FI-switch.
- the invention takes on a state of the art of magnetic triggers for FI switch reference, as in DE-A1-38 38 444 is described.
- the anchor With this magnetic release, the anchor is at the connecting web attached to a U-shaped leaf spring, whose legs are mounted on an anchor bearing.
- a prestressed tension spring anchor When triggered reaches the loaded by a prestressed tension spring anchor after a very short way a bearing edge of the anchor bearing and tilts then around this edge of the camp.
- This magnetic release needs beside the tension force generating tension spring additionally a relatively complicated trained leaf spring.
- a magnetic release described in DE-A1-41 11 092 has a rotatably mounted by means of an anchor bracket shaft and with a preloaded tension spring loaded anchor.
- the wave has a caulked rectangular anchor in the anchor and is guided in two lateral guides of an anchor holder.
- This Magnetic release requires in addition to the preloaded tension spring additionally the shaft and the armature and the shaft frictionally coupling spine.
- the object is based, a magnetic release, in particular for a residual current circuit breaker of the type mentioned above, which is characterized by simple construction and the lowest possible Number of components distinguishes.
- the magnetic release of the invention are by use a tortuous spiral spring and by arranging the winding axis this spiral spring on the extension of a to pivot the Ankers needed tilting edge parts, like an extra spring or like rotatable bearing brackets, saved.
- the Spiral spiral spring stands for power for a force-transmitting Tappet available and can at the same time to reload the Magnetic release after a tripping operation required recharging energy be effectively damped.
- the forms Spiral spiral spring however a bearing hinge for the anchor and positions the anchor using a simple mount at the same time extremely effective.
- the anchor can then also one have a simple shape with evenly distributed mass. This will give a good shock resistance and good Adjustment bandwidth of the magnetic release according to the invention reached.
- the tilting edge by a magnetically insulating spacing of the two Yoke plates anyway needed bolts can be formed omitted in a equipped with such a yoke Magnetic release an additional component for the tilting edge.
- a defined air gap can be set, which the Use of an otherwise usually between the two yoke plates used disc-shaped diaphragm dispensable power.
- Magnetic release comprises a trough-shaped bottom 1 and a lid 2 existing insulating material.
- a lid 2 existing insulating material.
- an opening 3 is provided, which is the vertical guide a cylindrical ram 4 is used.
- the plunger 4 has a thickened lower end on which is on a cuboid formed armature 5 of a magnetic circuit is seated. The upwardly directed end of the plunger 4 does not act on a illustrated switching lock on a contact arrangement of a not shown FI-switch.
- the magnetic circuit further comprises a two sheets 7, 8 containing, U-shaped yoke 9 on.
- the two yoke plates are using a non-magnetic material, for example a nickel alloy, existing bolt 10 about by Welding at a distance of typically 50 to 100 microns fixed to each other.
- Welding By additional magnetically non-conductive Welding, soldering or gluing can improve the mechanical stability of the yoke 9 are increased.
- the educated by the distance Air gap assumes the function of an otherwise usual used, foil-shaped diaphragms.
- the two yoke plates 7, 8 are each angled such that the yoke 9 in the region of the bend has V-shape.
- a prismatoid shaped Permanent magnet 11 arranged with flat pole faces.
- the two Pole surface are each on one of the two legs of the V at.
- the permanent magnet 11 automatically and without additional aids positioned in the correct position.
- the Magnet 11 can in this case triangular or trapezoidal base not having the base of the triangle or trapezium necessarily straightforward, but possibly also curved, for example, can be formed circular arc. In any case, however, the side surfaces of the triangle or the Trapezes associated with the pole faces of the magnet.
- the reference numeral 12 is an intermediate floor of insulating material designated.
- This intermediate floor has two on its top mutually parallel webs 13, 14. Between two webs is an undefined opening and a also not designated material recess provided which the implementation of the end portions of the yoke in the 9th containing U serve.
- On one of the yoke 7 formed Leg 15 of the U is one of an electrical signal excitable trip coil 16 plugged. This trip coil comes with Assistance of two power connections 17 led through the floor 1 supplied with electrical power, which occurs when a Fault current is formed in a summation current transformer.
- the reference numeral 18 is a executed as a double spring Designated spring element.
- This spring element 18 contains two cylindrical, mirror-symmetrically arranged coil springs 19, 20 with typically up to 10 turns each. As below is described, the double spring is subjected to bending. Therefore, other than the coil springs Winding bending springs, such as coil springs, are used.
- a double spring can also be a simple meandering Biegefeder as a spring element 18 in the magnetic release of the Invention can be used.
- Each spring 19 and 20 is in one Material recess 21 and 22 mounted, which in the web 13th or 14 is formed. The spring element 18 loads the armature 5 before triggering the magnetic release with a biasing force.
- FIG wound spiral spring 19 has two legs 24, 25, of which the leg 24 fixed in the material recess 21 of the Stegs 13 is held and - in particular Figures 2 and 3 can be removed - the leg 25 out with a parellel to the winding axis Section 26 in a groove 27 designed as the holder Ankers 5 is stored.
- a particularly symmetrical and therefore force-free storage of Anchor 5 is reached when the spring element 18 instead of a Spiral spiral spring the two of Fig.1 apparent in a Double spring integrated winding bending springs 19 and 20 has. These two springs are formed in opposite directions wound and mirror-symmetrical in the material recesses 21, 22nd arranged. The parallel to the winding axis aligned portions of the anchor 5 acting legs of these springs are part of a from Fig.3 apparent and held in the groove 27 connecting web 28th
- a particularly safe storage of the two spiral bending springs 19, 20 is achieved when each as a cylindrical coil spring are formed and each on an axially guided stationary bearing bolts are held.
- Such a bearing pin can in the two spiral bending springs 19, 20 holding Be intermediate 12 molded.
- Figure 4 is such a the wound bending spring 19 bearing bolt with the reference numeral 29th designated.
- leg 25 it is advantageous to attach the leg 25 in Ankertician because then its axially directed portion 26 is formed short and at the same time unwanted radial and axial forces from the Spring are largely kept away.
- a particularly safe Power transmission of the springs 19, 20 is ensured when the two legs of the springs 19, 20 each tangent to to set their turns. At the same time, such a spring can be very easy to manufacture.
- the leg 24 radially to the windings to be set.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
- Fig.1
- eine Explosionsdarstellung einer bevorzugten Ausführungsform des Magnetauslösers nach der Erfindung,
- Fig.2
- eine perspektivische Ansicht des Magnetauslösers gemäss Fig.1 nach dem Entfernen eines Teils seines Gehäuses vor einem Auslösevorgang,
- Fig.3
- eine etwas veränderte perspektivische Ansicht des Magnetauslösers gemäss Fig.2 nach einem Auslösevorgang, und
- Fig.4
- eine in Richtung der Windungsachse einer gewundenen Biegefeder ausgeführte Ansicht des Magnetauslösers gemäss Fig.2 nach vollständigem Entfernen seines Gehäuses.
- 1
- Boden
- 2
- Deckel
- 3
- Öffnung
- 4
- Stössel
- 5
- Anker
- 7, 8
- Jochbleche
- 9
- Joch
- 10
- Bolzen
- 11
- Permanentmagnet
- 12
- Zwischenboden
- 13, 14
- Stege
- 15
- Schenkel
- 16
- Auslösespule
- 17
- Stromanschlüsse
- 18
- Federelement
- 19, 20
- gewundene Biegefedern
- 21, 22
- Materialausnehmungen
- 23
- Kippkante
- 24, 25
- Schenkel
- 26
- Abschnitt
- 27
- Nut
- 28
- Verbindungssteg
- 29
- Lagerbolzen
Claims (11)
- Magnetauslöser, insbesondere für einen Fehlerstromschutzschalter, mit einem von einem Permanentmagneten (11) gespeisten magnetischen Kreis, enthaltend ein U-förmig ausgebildetes Joch (9) und einen im geschlossenen Zustand des magnetischen Kreises die Enden des U überbrückenden und beim Öffnen des magnetischen Kreises auf einer Kippkante (23) schwenkbar gelagerten Anker (5), und mit einem vorgespannten Federelement (18) zur Belastung des Ankers (5) entgegen einer vom Permanentmagneten (11) erzeugten Kraft, dadurch gekennzeichnet, dass das Federelement (18) mindestens eine gewundene Biegefeder (19, 20) aufweist mit einer in Verlängerung der Kippkante (23) ausgerichteten Windungsachse und mit zwei Schenkeln (24, 25), von denen ein erster (24) feststehend gehalten ist und ein zweiter (25) mit einem parallel zur Windungsachse geführten Abschnitt (26) in einer Halterung des Ankers (5) gelagert ist.
- Magnetauslöser nach Anspruch 1, dadurch gekennzeichnet, dass die Halterung eine parallel zur Windungsachse erstreckte Nut (27) aufweist.
- Magnetauslöser nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die mindestens eine gewundene Biegefeder (19, 20) als zylindrische Schraubenfeder ausgebildet ist.
- Magnetauslöser nach Anspruch 3, dadurch gekennzeichnet, dass der vorzugsweise zunächst in tangentialer Richtung geführte zweite Schenkel (25) ankerseitig an den Windungen der mindestens einen Schraubenfeder (19, 20) angesetzt ist.
- Magnetauslöser nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass die mindestens eine zylindrische Schraubenfeder (19, 20) auf einem axial geführten feststehenden Lagerbolzen (29) gehalten ist.
- Magnetauslöser nach Anspruch 5, dadurch gekennzeichnet, dass der Lagerbolzen (29) in einen die mindestens eine zylindrische Schraubenfeder (19, 20) haltenden, feststehenden Zwischenboden (12) eingeformt ist.
- Magnetauslöser nach Anspruch 6, dadurch gekennzeichnet, dass der Zwischenboden (12) mindestens eine nutförmige Materialausnehmung (21, 22) aufweist, welche der Aufnahme der Windungen und des ersten Schenkels (24) der mindestens einen zylindrischen Schraubenfeder (19, 20) dient.
- Magnetauslöser nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Federelement (18) zwei in axialer Richtung voneinander beabstandete, gewundene Biegefedern (19, 20) mit jeweils einem den parallel zur Windungsachse geführten Abschnitt (26) enthaltenden zweiten Schenkel (25) und jeweils einem ersten Schenkel (24) aufweist.
- Magnetauslöser nach Anspruch 8, dadurch gekennzeichnet, dass die parallel zur Windungsachse geführten Abschnitte (26) Teil eines in der Halterung des Anker (5) gelagerten Verbindungsstegs (28) sind.
- Magnetauslöser nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Kippkante (23) von einem zwei magnetisch gegeneinander isolierte Bleche (7, 8) des Jochs (9) mechanisch miteinander verbindenden Bolzen (10) gebildet ist.
- Magnetauslöser nach einem der Ansprüche 1 bis 10 mit zwei magnetisch gegeneinander isolierten Jochblechen (7, 8), dadurch gekennzeichnet, dass die beiden Jochbleche V-förmig abgewinkelt ausgeführt sind, und dass der Permanentmagnet (11) als Prismatoid mit ebenen Polflächen geformt ist und mit den Polflächen jeweils an je einem der beiden Schenkel des V anliegt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19637076A DE19637076A1 (de) | 1996-09-12 | 1996-09-12 | Magnetauslöser, insbesondere für einen Fehlerstromschutzschalter |
DE19637076 | 1996-09-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0829896A2 EP0829896A2 (de) | 1998-03-18 |
EP0829896A3 EP0829896A3 (de) | 2000-10-25 |
EP0829896B1 true EP0829896B1 (de) | 2005-10-19 |
Family
ID=7805368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810591A Expired - Lifetime EP0829896B1 (de) | 1996-09-12 | 1997-08-21 | Magnetauslöser, insbesondere für einen Fehlerstromschutzschalter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0829896B1 (de) |
AT (1) | ATE307384T1 (de) |
DE (2) | DE19637076A1 (de) |
ES (1) | ES2251733T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19837059A1 (de) * | 1998-08-17 | 2000-02-24 | Maier & Cie C | Auslösevorrichtung für einen Schutzschalter, insbesondere einen Fehlerstrom-Schutzschalter |
DE102004044977B4 (de) * | 2004-09-16 | 2007-03-29 | Siemens Ag | Auslöserelais für einen Fehlerstromschutzschalter |
EP4266340A1 (de) | 2022-04-22 | 2023-10-25 | ABB Schweiz AG | Verbesserungen bei magnetischen relais |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1546155A (en) * | 1975-11-13 | 1979-05-16 | Saparel | Electromagnetic release |
IT1162505B (it) * | 1979-03-01 | 1987-04-01 | Ave Belli Andrea | Interruttore differenziale ad alta sensibilita' |
DE3528470A1 (de) * | 1985-08-08 | 1987-02-19 | Bbc Brown Boveri & Cie | Fehlerstromschutzausloeser |
DE3643510A1 (de) * | 1986-12-19 | 1988-06-30 | Felten & Guilleaume Energie | Magnetsystem fuer schnellabschaltung |
DE3838444A1 (de) * | 1988-11-12 | 1990-05-17 | Felten & Guilleaume Energie | Magnetsystem fuer schnellabschaltung |
DE4111092A1 (de) * | 1991-04-07 | 1992-10-08 | Schiele Gmbh & Co Kg | Fehlerstromrelais |
-
1996
- 1996-09-12 DE DE19637076A patent/DE19637076A1/de not_active Withdrawn
-
1997
- 1997-08-21 EP EP97810591A patent/EP0829896B1/de not_active Expired - Lifetime
- 1997-08-21 AT AT97810591T patent/ATE307384T1/de active
- 1997-08-21 DE DE59712447T patent/DE59712447D1/de not_active Expired - Lifetime
- 1997-08-21 ES ES97810591T patent/ES2251733T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59712447D1 (de) | 2005-11-24 |
EP0829896A3 (de) | 2000-10-25 |
EP0829896A2 (de) | 1998-03-18 |
ATE307384T1 (de) | 2005-11-15 |
ES2251733T3 (es) | 2006-05-01 |
DE19637076A1 (de) | 1998-03-19 |
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