EP0977234A2 - Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié - Google Patents

Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié Download PDF

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Publication number
EP0977234A2
EP0977234A2 EP99113505A EP99113505A EP0977234A2 EP 0977234 A2 EP0977234 A2 EP 0977234A2 EP 99113505 A EP99113505 A EP 99113505A EP 99113505 A EP99113505 A EP 99113505A EP 0977234 A2 EP0977234 A2 EP 0977234A2
Authority
EP
European Patent Office
Prior art keywords
coil
trigger
yoke
circuit arrangement
magnetic
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.)
Withdrawn
Application number
EP99113505A
Other languages
German (de)
English (en)
Other versions
EP0977234A3 (fr
Inventor
Hans-Joachim Dr.Rer.Nat Krokoszinski
Heinz-Erich Dr.-Ing. Popa
Bernd Dipl.-Ing. Siedelhofer
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 Patent GmbH
Original Assignee
ABB Patent GmbH
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 Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0977234A2 publication Critical patent/EP0977234A2/fr
Publication of EP0977234A3 publication Critical patent/EP0977234A3/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Definitions

  • the invention relates to a tripping device for a residual current circuit breaker, according to the preamble of claim 1 and a circuit arrangement according to the preamble of claim 8.
  • a trigger as is usually known, has a U-shaped yoke, the both legs are covered by a rotatable hinged anchor. On the yoke there is a permanent magnet that generates a magnetic flux inside the yoke, so that the hinged anchor is tightened.
  • the hinged anchor is under the force a spring that continuously acts on the hinged anchor in the opening direction, the magnetic attraction force is greater than the spring force.
  • a residual current circuit breaker has one for testing Test circuit with which a fault current is simulated. When pressing a test button trigger and switch off the residual current circuit breaker.
  • Actuators with shape memory alloys require energy in the form of heat by an ohmic consumer, if possible from the fault current, by one To achieve grid voltage independence must be generated. With the corresponding Frame sizes for residual current releases are those in the secondary circuit of the transformer available power too small to provide the actuator with a required Heat the mass in a sufficiently short time so that the Curie point is exceeded becomes. Actuators in which a shape memory alloy is used therefore normally heated depending on the mains voltage, with the problem that it in the event of an interruption, for example, of the neutral conductor or of the phase conductor of which the respective actuator takes its energy, can not be operated.
  • the object of the invention is a trigger device for a mains voltage independent To create residual current circuit breakers of the type mentioned with the the protective function is further improved.
  • the required energy from the Residual current can be obtained, so that the triggering device without auxiliary energy, for example from the network.
  • a suitable circuit arrangement for controlling the triggering device to accomplish is provided.
  • the trigger is a magnetic drive arrangement with a another permanent magnet, another coil and one when a Fault current from the further coil by means of a spring force from a first position, in which it is not, in a second position in which it is the hinged anchor of the trigger opens, assigned to powered submersible anchor.
  • Such a magnetic drive arrangement is also referred to as a bistable actuator the invention makes use of the fact that such a bistable magnetic actuator can provide such energy that adhesive forces between the hinged anchor, also called anchor for short, and the neighboring pole face can be overcome can.
  • a attack the second spring that acts on the submersible anchor in the opening direction of the hinged anchor is a possibility that the magnetic drive arrangement only has a winding.
  • the plunger anchor suitably carries a pin made of non-magnetic Material with which the submersible anchor hits the side of the folding anchor over which the The armature support surface is detached from the pole surface.
  • the magnetic drive arrangement between the yoke legs of the magnetic yoke of the trigger and between the web of the magnetic yoke and the folding anchor.
  • the magnetic drive arrangement be attached to the side of the trigger and by means of a laterally projecting one Act lever arrangement on the hinged anchor. This ensures that this additional magnetic drive arrangement as an additional device for a trigger can be attached to any commercially available trigger.
  • the resetting of the magnetic drive arrangement is then also according to the invention at the same time as the folding anchor is reset.
  • a circuit arrangement for controlling the magnetic drive arrangement is the claim 8 can be seen.
  • Such a circuit arrangement has a total current transformer through which Mains are passed through, and a secondary winding, the connections with the Coil of the trigger are connected; According to the invention, an energy store can be provided be charged by the secondary fault current. The energy storage can then be discharged via the winding of the magnetic drive arrangement.
  • Fig. 1 contains the representation of a known trigger 10, which is a U-shaped Yoke 11 has a permanent magnet 13 on one leg 12 thereof is fixed, whereas the other leg 14 carries a coil 15, the coil connections 16 and 17 with the secondary winding of the total current transformer of a residual current circuit breaker (see below).
  • a known trigger 10 which is a U-shaped Yoke 11 has a permanent magnet 13 on one leg 12 thereof is fixed, whereas the other leg 14 carries a coil 15, the coil connections 16 and 17 with the secondary winding of the total current transformer of a residual current circuit breaker (see below).
  • the two legs 12 and 14 have pole faces 18 and 19, which are covered by a hinged armature 20 which is rotatably mounted on the leg 12 and projects beyond this leg 12 with an extension 21; on a further extension 22, which is used to fix the permanent magnet 13 to the leg 12, and on the extension 21 a tension spring 23 is attached, which acts continuously on the hinged armature 20 in the direction of arrow P 1 , so that it removes the hinged armature 20 from the pole face 19 tries to withdraw.
  • a hinged armature 20 which is rotatably mounted on the leg 12 and projects beyond this leg 12 with an extension 21; on a further extension 22, which is used to fix the permanent magnet 13 to the leg 12, and on the extension 21 a tension spring 23 is attached, which acts continuously on the hinged armature 20 in the direction of arrow P 1 , so that it removes the hinged armature 20 from the pole face 19 tries to withdraw.
  • the permanent magnet generates a magnetic flux within the yoke and the hinged armature, which together form a closed magnetic circuit, which attracts the hinged armature 20 against the yoke surface 19.
  • the coil 15 generates an opposing magnetic flux, so that the attractive force of the pole face 19 on the hinged armature 20 is reduced until the spring force of the spring 23 predominates and the hinged armature opens in the direction of arrow P 1 .
  • the trigger 10 is state of the art.
  • the trigger 10 is a magnetic Assigned actuator, which is shown in more detail in FIGS. 4 and 5.
  • This magnetic Actuator which has the reference number 25 in its entirety, as below to be explained in more detail, a second permanent magnet 26 and a second Coil 27; the ends of the winding of the coil 27 are designated by the reference numerals 28 and 29 and are in a manner shown below with the secondary winding connected as well as connections 16 and 17.
  • FIGS. 4 and 5 show the electromagnetic Drive system 25, 26, 27 (see Fig. 1).
  • the electromagnetic drive or armature system i.e. the trigger, has a closed one Yoke 40 with a lower web 41 and an upper web 42, which means Central webs 43 and 44 are connected to one another, so that a closed Magnetic circuit is formed.
  • the webs 41 and 42 circular plate and the webs 43/44 are formed by a cylindrical shape.
  • a permanent magnet arrangement 47 is provided after the coil 45, which is either formed by two permanent magnet parts. Instead of two permanent magnet parts an annular plate could also be provided.
  • the Submersible anchor 46 slides within the permanent magnet assembly 47.
  • the free end of the plunger anchor 46 carries a pin 48 made of magnetically insulating material which reaches through an opening 49 in the upper web.
  • a spring 50 is arranged, which with one End on the immersion anchor 46 and the other end on the inner surface of the web 42 is attached.
  • the ends of the coil winding of the coil 45 have the reference numbers 51 and 52.
  • Fig. 4 shows the arrangement 40 in the form in which the plunger 46 against the lower web 41 abuts.
  • the permanent magnet arrangement 47 Magnetic flux 53 generated, on the one hand by the plunger 46, the web arrangement 43, 44 and the lower plate 41 passes through.
  • the spring 50 is so between the upper plate 42 and the plunger 46 arranged to the Submersible anchor 46 is continuously loaded in the direction of arrow P.
  • the plunger anchor is 46 due to the flux 53 coming from the permanent magnet arrangement 47 below attracted to the web 41 or the plate 41.
  • the pin is located 48 with its free end within the top plate 42 or at least its free one End flush with the outer surface of plate 42.
  • the hinged armature 20 or one attached to it is located above the magnet arrangement 40 fixed lever, e.g. B. at a distance from the upper plate 42 and thus in one Distance from the free end of the pin 48 in the order of 1 mm.
  • a fault current occurs, it flows via the terminals 51 and 52 through the coil 45, whereby a magnetic flux is generated within the magnet system 40, which flows through the permanent magnet arrangement 47, the webs 43, 44, the plunger 46 and the upper plate 42 extends, whereby the attractive force of the lower plate 41 or the magnet assembly 40 on the plunger armature 46 is released and the plunger armature 46 is moved upwards by the spring force of the spring 50, so that the plunger armature 46 strikes against the inner surface of the upper plate 42 and the Pin 48 against the hinged anchor 20, so that the hinged anchor 20 is pivoted in the direction of arrow P 1 (see FIG. 1), whereby any adhesive forces present between the yoke surface 19 and the anchor 20 are overcome.
  • the plunger armature 46 is brought mechanically back into the position according to FIG. 4.
  • the actuator can now be used in addition the trigger 10 may be arranged so that the an independent, separate, in addition attachable part.
  • the actuator is arranged within the yoke; this of course depends on the size of the actuator.
  • FIG. 2 shows a first embodiment of a control for the magnetic arrangement 4 and 5.
  • the network conductor R and, if appropriate, the network conductors S and T and a neutral conductor N shown in broken lines are passed through a toroidal core converter 60 as the primary winding.
  • a secondary winding 61 is wound around the toroidal core converter 60, which is connected to the coil 15 of the release (see FIG. 1), a coupling coil 62 being provided which is connected to a circuit arrangement for controlling the winding 45.
  • the coupling coil 62 is guided to a delay switching device 63 which closes a switch 64 with a delay of less than 50 ms, a rectifier 65 being connected between the one end of the coupling coil 62 and the switch 64, a voltage U c being present between its output terminals is.
  • a capacitor 66 is connected in parallel with the rectifier 65; In parallel to the capacitance 66 there is an integrated circuit 67 which controls a switch 68 which is located in a parallel line 69 in which the coil 45 is located.
  • a diode 70 is located between one end of the capacitor and the integrated control circuit 67; a further diode 71 in parallel with the coil 45.
  • the switch 64 which is also referred to as a delay switch, is an on switch and is accordingly arranged on the secondary side in front of the rectifier 65.
  • the switch 64 has switched through, the voltage U c at the output of the rectifier or at the capacitor 66 increases with the charging of the capacitance 66 by the charging current I c.
  • the integrated circuit or the electronic component 67 ensures that the switch 64 is opened , whereas the switch 68, which is preferably a MOSFET or a microthyristor, is closed as soon as the desired capacitor voltage U c0 has been reached.
  • the capacitor is discharged via the coil 45 and the diode 70, so that the magnet system is moved from the position shown in FIG. 4 to the position shown in FIG. 5.
  • the circuit arrangement according to FIG. 3 is similar to that of FIG. 2.
  • On the secondary winding 61 is the coil 15 of the trigger and between the secondary winding 61 and the coil 15 there is a changeover switch 72 which, from a first position, in which the secondary winding 61 is connected to the trigger coil in a second position is switched so that electrical current from the secondary winding 61 can flow to a connection point 73, which is connected to a transformer 74 whose secondary side 75 is connected to the rectifier 65; the rest
  • the arrangement of FIG. 3 corresponds to that of FIG. 2.
  • the inductive decoupling or a voltage transformation takes place in two ways, namely with a coupling coil on the release core or the yoke 1 and by switching the trigger circuit from Trigger on a separate transformer, which bears the reference number 74 in FIG. 3.
  • the advantage of the second circuit arrangement according to FIG. 3 is that Turns ratio can be selected independently of the trip coil; Indeed a separate transformer core must be added as a component.
  • the magnet arrangements according to FIGS. 4 and 5 are in the trigger according to FIG. 1 installed, the arrangement between the two legs 12 and 14 to lie is coming. This causes a direct transmission of impulses to the hinged anchor 20.
  • the actuator can of course also be provided outside the release lever, in which case an in The lever reaching into the trigger area transfers the force to the hinged anchor accomplished.
  • the return of the extended middle leg can be done mechanically with the closing of the armature caused by the switching mechanism.
  • a reset mandrel 81 is fastened to the armature 20 by means of a spring 80, which can reach through a recess 82 in the hinged anchor 20 and against the pin 48 comes to rest when closing and the plunger anchor over presses the pin inwards against the lower plate 41.
  • the Force effect of the magnetic flux in the lower part of the actuator core is the spring force of the spring 50 and the plunger anchor is held in the lower end position according to FIG. 4.
  • the magnet system Due to the delay device in the delay switch 63/64 or 72 the magnet system, d. H. 4 and 5 only after an adjustable Delay time activated; if the trigger function is normal, it comes therefore no action, since then the fault current is switched off, the capacitor 66 would charge.
  • the solution should fail, for example if the hinged anchor is not pulled off the yoke or the yoke surface 19, d. H. so the contact pieces of the residual current circuit breaker remain closed, then flows even after an adjustable delay time, the fault current still and therefore also the transformed current on the secondary side of the converter, d. H. in the secondary winding 61, whereby the magnet arrangement according to FIGS. 4 and 5 are activated can.
  • the fault current on the secondary side is such that the one within the circuit arrangement electrical components located are easily supplied can.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
EP99113505A 1998-07-28 1999-07-02 Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié Withdrawn EP0977234A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998133829 DE19833829A1 (de) 1998-07-28 1998-07-28 Auslöseeinrichtung für einen Fehlerstromschutzschalter und Schaltungsanordnung zur Ansteuerung derselben
DE19833829 1998-07-28

Publications (2)

Publication Number Publication Date
EP0977234A2 true EP0977234A2 (fr) 2000-02-02
EP0977234A3 EP0977234A3 (fr) 2000-11-15

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Application Number Title Priority Date Filing Date
EP99113505A Withdrawn EP0977234A3 (fr) 1998-07-28 1999-07-02 Dispositif de déclenchement pour un disjoncteur à courant de défaut et circuit de commande approprié

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EP (1) EP0977234A3 (fr)
DE (1) DE19833829A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037230A1 (de) * 2006-08-09 2008-02-14 Siemens Ag Schalteinrichtung zum selektiven Abschalten mit einer induktiven Auslöseeinheit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154619A2 (fr) * 1984-03-05 1985-09-11 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Déclencheur à aimant de maintien
DE3823101A1 (de) * 1988-07-07 1990-01-11 Siemens Ag Redundante ausloeseeinrichtung
WO1992002944A1 (fr) * 1990-07-30 1992-02-20 Bticino S.P.A. Electro-aimant de declenchement a aimant permanent pour disjoncteurs automatiques
EP0851450A2 (fr) * 1996-12-27 1998-07-01 CMC Carl Maier + Cie AG Disjoncteur de défaut à la terre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2745464B1 (de) * 1977-10-08 1979-01-25 Felten & Guilleaume Carlswerk Fehlerstrom-Schutzschalter
DE2908070A1 (de) * 1979-03-02 1980-09-04 Ritz Messwandler Kg Stromschwall-stromwandler
ATA426180A (de) * 1980-08-21 1982-08-15 Biegelmeier Gottfried Fehlerstromschutzschalter
DE3823098A1 (de) * 1988-07-07 1990-01-11 Siemens Ag Einrichtung zum schutz vor fehlerstroemen
DE4118177C2 (de) * 1991-06-03 1996-11-28 Abb Patent Gmbh Permanentmagnetischer Fehlerstromauslöser
DE19543212A1 (de) * 1995-11-20 1997-05-22 Rainer Dipl Phys Berthold Fehlerstromschutzschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154619A2 (fr) * 1984-03-05 1985-09-11 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Schrems-Eugenia Niederösterreich Déclencheur à aimant de maintien
DE3823101A1 (de) * 1988-07-07 1990-01-11 Siemens Ag Redundante ausloeseeinrichtung
WO1992002944A1 (fr) * 1990-07-30 1992-02-20 Bticino S.P.A. Electro-aimant de declenchement a aimant permanent pour disjoncteurs automatiques
EP0851450A2 (fr) * 1996-12-27 1998-07-01 CMC Carl Maier + Cie AG Disjoncteur de défaut à la terre

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DE19833829A1 (de) 2000-02-03
EP0977234A3 (fr) 2000-11-15

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