EP0834184B1 - Schutzeinrichtung gegen überlastung der schaltkontakte eines schaltgerätes - Google Patents

Schutzeinrichtung gegen überlastung der schaltkontakte eines schaltgerätes Download PDF

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Publication number
EP0834184B1
EP0834184B1 EP96916009A EP96916009A EP0834184B1 EP 0834184 B1 EP0834184 B1 EP 0834184B1 EP 96916009 A EP96916009 A EP 96916009A EP 96916009 A EP96916009 A EP 96916009A EP 0834184 B1 EP0834184 B1 EP 0834184B1
Authority
EP
European Patent Office
Prior art keywords
switching
protective device
energy converter
magnet
contacts
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
Application number
EP96916009A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0834184A1 (de
Inventor
Michael Hahn
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 EP0834184A1 publication Critical patent/EP0834184A1/de
Application granted granted Critical
Publication of EP0834184B1 publication Critical patent/EP0834184B1/de
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
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • 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
    • H01H9/50—Means for detecting the presence of an arc or discharge
    • 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
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
    • H01H2071/2427—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism with blow-off movement tripping mechanism, e.g. electrodynamic effect on contacts trips the traditional trip device before it can unlatch the spring mechanism by itself

Definitions

  • the invention relates to a protective device against overload the switching contacts of a switching device, the one Switch mechanism for opening and closing the switch contacts has, the switching contacts under the influence of a high current against the action of the switching mechanism can be separated to form an arc.
  • a protective device of this type is, for example, by DE 40 22 078 A1 has become known.
  • the Protective devices are one of the switching mechanisms belonging trigger shaft provided by a trigger can be actuated.
  • the trigger is in turn by the current influenceable that flows through the switching device. Will the Switch contacts immediately separated by the forces with associated with the flow of a high current, so the Switching mechanism directly by the opening movement of the Switch contacts released and thus a complete shutdown brought about.
  • the switching mechanism is solved by sliding the trigger shaft against one Restoring force reducing the overlap between provided on the release shaft and a ratchet lever Latching surfaces.
  • the switching mechanism is a pressure piston assigned to the arc extinguishing chamber via a pipeline is connected (EP 0 455 564 A1).
  • the invention has for its object a protective device of the type mentioned in such a way that Switchgear of different types through an inexpensive and can be retrofitted with little effort Overload can be protected by too high a current can.
  • this object is achieved in that in an energy converter is arranged in the vicinity of the switching contacts is that of an electromagnetic connected to the arc Radiation is exposed and that the energy converter received electromagnetic radiation into one Converts current to actuate the protective device.
  • the invention provides a means, a small one to provide electrical energy whenever a Switching device has reached its performance limit, d. H. when the switch contacts are no longer able to to keep the current flowing. That through the energy converter provided electrical energy becomes this used to activate a suitable protective device, the Can be part of the switching device, but also on one can be accommodated elsewhere. This will still be discussed in more detail.
  • the energy converter can be used with a coil provided with a ferrite core, the rectifier is connected downstream.
  • Such an arrangement acts as Antenna for the high-frequency emitted by an arc Radiation emitted by the rectifier into one for actuation suitable direct current is converted to the protective device becomes.
  • the ferrite core can have a straight shape have or it can preferably be annular be. This embodiment of the energy converter stands out through special effectiveness and in that a relatively large winding or several windings on the Ferrite core can be accommodated.
  • the invention is not based on switching devices limited, a trigger mechanism controllable switching mechanism have.
  • the protective device when using a switching device designed as a disconnector one connected in series with the disconnector Protection organ assigned and by that of the energy converter supplied electricity to be controllable.
  • a switching device designed as a disconnector one connected in series with the disconnector Protection organ assigned and by that of the energy converter supplied electricity to be controllable.
  • the circuit breaker serves as that of the energy converter controllable protective organ.
  • the protective device is also used when using a trained as a contactor with electromagnetic drive Assign switchgear to a control circuit of the contactor.
  • the contactor is then switched off when a such high current flows that the switch contacts below Arcing can be separated. Is it a ordinary, d. H. Unlatched contactor, so the Control circuit of the electromagnetic drive one Contained break contact by the energy converter can be actuated.
  • a switching device is a latched Contactor uses a release magnet to switch off has, the arrangement is similar to that of one Circuit breaker, the release magnet of the contactor similar task as the trip magnet of a circuit breaker Fulfills.
  • circuit breaker tripping magnets There are different types of circuit breaker tripping magnets Types known, which are characterized by their energy requirements differentiate.
  • trigger magnets that a relatively low auxiliary energy, as required by can be provided to the energy converter.
  • a trigger magnet is suitable, which is a permanent magnet Maintaining the tensioned position of an energy storage device and a trigger winding to release the Has energy storage.
  • DE 34 33 126 A1 or EP 0 305 321 B1 are suitable designs of release magnets described.
  • FIG. 1 shows a basic circuit diagram of a circuit with one consumer, one disconnector and one Protective device in the form of a circuit breaker.
  • Figure 2 shows a similar block diagram, in which a consumer through an electromagnetic contactor can be turned off.
  • Figure 3 is again based on a schematic diagram a circuit with a consumer and a circuit breaker shown.
  • Figure 4 shows a switching chamber of a low-voltage circuit breaker in connection with an energy converter according to the invention and a switching mechanism by a release magnet can be released.
  • FIG. 5 shows a circuit example for a Energy converter and a trigger magnet shown, one Ferrite core of the energy converter has a straight shape.
  • FIG. 6 shows one in connection with switching contacts Switchgear an energy converter with an annular Ferrite core shown.
  • FIG. 1 is used to switch on and off Consumer 1 is a circuit breaker 2, by hand through a Drive device 3 is to be used.
  • a protective device it is ensured that the switching contacts of the Isolator switch 2 fully open and thus the one Power source 4 powered circuit via consumer 1 is interrupted when the switch contacts under the Influence of an excessive current against the effect of the Drive device 3 to form an arc separate from each other.
  • the protective device includes a also in series with the current source 4 and the Consumer 1 switched circuit breaker 6, the Switch mechanism 7 by a release magnet 10 for opening the switch contacts can be released.
  • the trigger magnet 10 will by the current supplied by the energy converter 5 controlled. Otherwise, the trigger magnet 10 is also through a trigger 11 actuated, the normal, after protective functions set according to the specified parameters provides.
  • an electromagnetic actuated protection 12 provided with a drive magnet 13.
  • A serves to operate the drive magnet 13 Auxiliary power source 14 in connection with a control switch 15.
  • the Performance limit of protection 12 detected in that a Energy converter 5 near the switch contacts of the protection 12 is arranged, which from an arc to the Switching contacts detects outgoing radiation energy.
  • the Protective device in this case includes in addition to that Energy converter 5 in the control circuit of the drive magnet 13 lying break contact 16, its actuator 17 with that supplied by the energy converter 5 Electricity is applied.
  • FIG. 3 shows a further example in which the input and Switching off consumer 1 only that in FIG. 1 Circuit breaker 6 shown is used.
  • the energy converter 5 is assigned to the circuit breaker 6 and located likewise close to the switch contacts, to that of one Arc on the switch contacts outgoing electromagnetic To detect radiation.
  • Circuits can be single or multi-phase. Accordingly single or multi-pole switching devices are used. It is recommended for multi-pole switching devices, each pole assign at least one energy converter 5.
  • the pole of the low-voltage circuit breaker shown in FIG. 4 6 includes an arc extinguishing chamber 20 with Extinguishing plates 21 and a fixed switch contact 23 and a movable switch contact 23.
  • An arcing horn 24 on the fixed switch contact 22 and an arc guide rail 25 at the opposite end of the arc quenching chamber 1 lead one between the switch contacts 22 and 23 burning switching arc to the quenching plates 21.
  • the switching mechanism 7 for actuating the movable switching contact 4 is, as in FIGS. 1 and 3, also in the figure 4 shown schematically. From a more detailed description of the Switching mechanism 7 can be disregarded because it is a known, for example in the aforementioned DE 40 22 078 A1 described switching mechanism can act.
  • the switching mechanism 7 is by a Trigger magnet 10 releasable, in a known manner by a electronic or electromechanical trigger 11 actuated can be.
  • FIG. 4 there are two further positions in dash-dotted lines of the movable switching contact 23 indicated. This corresponds to the one position of the fully open position, as it occurs after the release of the switching mechanism 7. Independently of these, however, the movable switch contact 23 a little removed from the fixed switch contact 22 Take a position if a short circuit current over the Switch contacts flow and due to electrodynamic forces the contact force is overcome. The resulting one Switching arc is detected by the energy converter 5, the a sufficient to actuate the trigger magnet 11 Gives off energy.
  • the energy converter 5 can, for example, in Wall parts of the arc quenching chamber 1 or outside the same be housed.
  • the energy converter 5 has a housing 27, indicated only in general, in which there is a coil 30.
  • A serves as the core of the coil 30 Ferrite rod 31, which acts as an antenna Arrangement is created.
  • From an arc to the Switch contacts 22 and 23 outgoing electromagnetic Radiation 28 generates a high frequency in the coil 30 AC current through a rectifier assembly 32 in a direct current suitable for operating the trigger magnet 10 is reshaped.
  • These are preferably a holding magnet system of the type mentioned, whose Tripping winding requires little energy. So that is the described device constantly without auxiliary energy ready for use.
  • energy converters with an annular ferrite core are suitable for the purposes of the invention in particular energy converters with an annular ferrite core.
  • FIG. 6 An example of this is shown in FIG. 6.
  • the energy converter 5 has an annular core 34 Ferrite material on the whole or in part with a Winding 35 is provided. Multiple windings can also be used be arranged on the core 34.
  • the energy converter 5 is the time of the switching contacts 22 and 23 approximately such that the ring plane parallel to the level of the switching movement lies.
  • the one with the winding is indicated schematically 35 connected rectifier arrangement 32 and the trigger magnet 10 and the switching mechanism 7.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP96916009A 1995-06-19 1996-06-05 Schutzeinrichtung gegen überlastung der schaltkontakte eines schaltgerätes Expired - Lifetime EP0834184B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19522603 1995-06-19
DE19522603A DE19522603A1 (de) 1995-06-19 1995-06-19 Schutzeinrichtung gegen Überlastung der Schaltkontakte eines Schaltgerätes
PCT/DE1996/001048 WO1997000531A1 (de) 1995-06-19 1996-06-05 Schutzeinrichtung gegen überlastung der schaltkontakte eines schaltgerätes

Publications (2)

Publication Number Publication Date
EP0834184A1 EP0834184A1 (de) 1998-04-08
EP0834184B1 true EP0834184B1 (de) 1999-01-13

Family

ID=7764932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96916009A Expired - Lifetime EP0834184B1 (de) 1995-06-19 1996-06-05 Schutzeinrichtung gegen überlastung der schaltkontakte eines schaltgerätes

Country Status (5)

Country Link
US (1) US5933303A (ja)
EP (1) EP0834184B1 (ja)
JP (1) JP3771268B2 (ja)
DE (2) DE19522603A1 (ja)
WO (1) WO1997000531A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010010061A1 (de) * 2008-07-25 2010-01-28 Siemens Aktiengesellschaft Anordnung zum abschalten eines fehlerstromes in einer stromführenden leitung
DE102009010227A1 (de) 2009-02-24 2010-08-26 Siemens Aktiengesellschaft Auslöser für eine elektrische Schaltanordnung
DE102009010229A1 (de) 2009-02-24 2010-08-26 Siemens Aktiengesellschaft Auslöser für eine elektrische Schaltanordnung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948632B4 (de) * 1999-10-08 2005-08-11 Siemens Ag Aktoreinheit mit einem Grundaktor, einem Zusatzaktor und einer Ansteuereinheit
CN100413861C (zh) 2002-12-10 2008-08-27 维勒凯姆制药股份有限公司 用于治疗或预防黄病毒感染的化合物
AU2007321677B2 (en) * 2006-11-15 2013-04-11 Vertex Pharmaceuticals (Canada) Incorporated Thiophene analogues for the treatment or prevention of flavivirus infections
EP3349232B1 (fr) * 2017-01-12 2020-05-06 ABB Schweiz AG Contacteur électromécanique

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433126A1 (de) * 1984-09-08 1986-03-20 Harting Elektronik Gmbh Ausloesemagnetsystem
CA1294305C (en) * 1987-08-25 1992-01-14 Donald R. Boyd Tripping coil with flux shifting coil and booster coil
US4996507A (en) * 1988-08-01 1991-02-26 Westinghouse Electric Corp. CT quick change assembly and force transmitting spacer
DE3905822A1 (de) * 1989-02-22 1990-08-23 Siemens Ag Verfahren zum betrieb eines leistungsschalters
FR2661776B1 (fr) * 1990-05-04 1996-05-10 Merlin Gerin Declencheur instantane d'un disjoncteur.
DE4022078A1 (de) * 1990-07-10 1992-01-16 Siemens Ag Leistungsschalter mit unabhaengiger verklinkungseinrichtung des bewegbaren schaltkontaktes
US5185686A (en) * 1991-03-28 1993-02-09 Eaton Corporation Direction sensing arc detection
US5185684A (en) * 1991-03-28 1993-02-09 Eaton Corporation Frequency selective arc detection
US5185687A (en) * 1991-03-28 1993-02-09 Eaton Corporation Chaos sensing arc detection
US5185685A (en) * 1991-03-28 1993-02-09 Eaton Corporation Field sensing arc detection
DE4316239A1 (de) * 1993-05-14 1994-11-17 Marschner Hans Hermann Verfahren zur Lichtbogenerkennung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010010061A1 (de) * 2008-07-25 2010-01-28 Siemens Aktiengesellschaft Anordnung zum abschalten eines fehlerstromes in einer stromführenden leitung
DE102009010227A1 (de) 2009-02-24 2010-08-26 Siemens Aktiengesellschaft Auslöser für eine elektrische Schaltanordnung
DE102009010229A1 (de) 2009-02-24 2010-08-26 Siemens Aktiengesellschaft Auslöser für eine elektrische Schaltanordnung

Also Published As

Publication number Publication date
EP0834184A1 (de) 1998-04-08
JPH11507757A (ja) 1999-07-06
JP3771268B2 (ja) 2006-04-26
DE19522603A1 (de) 1997-01-09
WO1997000531A1 (de) 1997-01-03
US5933303A (en) 1999-08-03
DE59601155D1 (de) 1999-02-25

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