EP0655760A2 - Dispositif interrupteur électrique - Google Patents

Dispositif interrupteur électrique Download PDF

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Publication number
EP0655760A2
EP0655760A2 EP94118458A EP94118458A EP0655760A2 EP 0655760 A2 EP0655760 A2 EP 0655760A2 EP 94118458 A EP94118458 A EP 94118458A EP 94118458 A EP94118458 A EP 94118458A EP 0655760 A2 EP0655760 A2 EP 0655760A2
Authority
EP
European Patent Office
Prior art keywords
switching device
linear resistor
linear
conductor
switching
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
EP94118458A
Other languages
German (de)
English (en)
Other versions
EP0655760A3 (fr
EP0655760B1 (fr
Inventor
Pietro Dr. Ciboldi
Jaap Enno Prof. Dr. Daalder
Edgar Dr. Dullni
Gerhard Mauthe
Lutz Dr. Niemeyer
Stein Olaf Olsen
Francesco Dr. Perdoncin
Ralf Dr. Strümpler
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 EP0655760A2 publication Critical patent/EP0655760A2/fr
Publication of EP0655760A3 publication Critical patent/EP0655760A3/fr
Application granted granted Critical
Publication of EP0655760B1 publication Critical patent/EP0655760B1/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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/161—Variable impedances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/161—Variable impedances
    • H01H2033/163—Variable impedances using PTC elements

Definitions

  • the invention relates to an electrical switching device according to the preamble of claim 1.
  • Switching devices with which overcurrents, preferably short-circuit currents, are switched off in particular in the medium-voltage and high-voltage range are designed as circuit breakers, for. B. for high voltage as SF6 circuit breaker or for medium voltage as vacuum switch or low-oil switch and also SF6 circuit breaker.
  • the object of the invention is to provide a switching device of the type mentioned at the outset which can be produced more cost-effectively with the same switching power.
  • the invention makes use of the fact that certain materials and certain compositions of materials, for example those described in patent application P 42 21 309, increase their temperature and thus their resistance with increasing current. If you switch such a non-linear resistor in series with a switching device, then when a short-circuit current or generally an overcurrent occurs, this current is limited so that the prospective short-circuit or overcurrent is not reached.
  • a circuit breaker specially designed for short-circuit shutdowns does not have to be used, but that an isolating or load-break switch can be used which only has to be able to switch off the residual or rated current in a certain time.
  • the disconnector or switch disconnector can be designed for certain purposes as a quick disconnector; it is also possible, if the non-linear resistor can hold the voltage for a relatively long time, to use an inexpensive, if not cheap, slow disconnector which is only able to hold the voltage in the off position.
  • An impedance is advantageously connected in parallel with the nonlinear resistor. This impedance can be linear or non-linear, ie voltage-dependent. It can be designed as a capacitor that can be charged in order to reduce voltage peaks.
  • a varistor or a resistor can also preferably be provided.
  • the impedance can be integrated with the non-linear resistor or be discrete. Particularly where there are high inductivities in the network, this non-linear resistance must be connected in parallel with this impedance.
  • a particularly advantageous possibility of using such a non-linear resistor is that it can be used according to claim 2 with means for detecting the change in the properties of the resistor when there is a change in current in the line conductor, which means generate a signal when a specific overcurrent occurs Actuator for the disconnector or switch disconnector is supplied.
  • the non-linear resistance changes its geometric dimensions when an overcurrent occurs and the temperature increases; the change in dimensions, in particular the change in volume or length, can be used to effect a switch-off.
  • a temperature measuring element can also be attached to the resistor; the increase in temperature then generates the signal in question.
  • an actuator for. B. in the form of a piezo element, which is acted upon when the increased voltage drop across the resistor with this voltage and thereby undergoes a change in length or a deflection. This change in length or deflection can then be used to actuate the actuating device to switch off the load-break switch.
  • a particularly advantageous embodiment of the invention can go according to claim 7 in that the non-linear resistor or resistance element is assigned a switching mechanism with a latching point, which actuates the switching device.
  • the switching mechanism can be assigned a sliding element, which is preferably designed as a pin or sleeve and controls the actuating device for the switch or actuates the switch directly.
  • the non-linear resistor can of course also be associated with an electromagnetic release which actuates the switching mechanism, ie. H. unlatched.
  • a conductor which is part of the electromagnetic release, can be connected to an electrode of the non-linear resistor.
  • the non-linear resistor can be held together with the switching mechanism and / or the trigger and / or the conductor and / or the lock by a carrier arrangement made of insulating material;
  • the carrier arrangement can be designed according to one of claims 13 and 14 or according to claim 15 comprise a sleeve made of insulating material which at least encloses the non-linear resistor, wherein the non-linear resistor can be directly sealed by the sleeve and the trigger and / or Switch mechanism are housed in a free interior of the sleeve.
  • the sleeve can be tubular, preferably cylindrical, and have cover caps at its ends, to which an electrical feed or discharge is connected.
  • the insulating material for the carrier arrangement in particular the sheath, can be a material with a preferably voltage-dependent resistance value, preferably varistor ceramic, whereby local overvoltages can be derived.
  • the carrier arrangement designed in accordance with claim 13 or 14 can also be produced from the same material.
  • the sliding element can be designed according to claim 20 in a preferred manner as a pin and are under the pressure of a spring arrangement, so that it changes its position when unlatching the latching point, for. B. jumps out of the shell.
  • the switching mechanism with a lock by a spring element, which holds a pin, which is acted upon by the force of a spring, at nominal current and releases it at overcurrent.
  • the spring element can be produced and formed from thermobimetal or a shape memory alloy.
  • a fuse wire can also be used as a lock, which holds the sliding element against the force of a spring. As soon as the overcurrent occurs, the fuse wire will melt and release the force of the spring. There is of course also the possibility that the sliding element is held in a sleeve at one end, in which a compression spring and the fuse wire is received, and that the sleeve has a contact projection at the other end, which is electrically conductively connected to the non-linear resistor Counter contact is contactable. Now when the fuse wire melts and the sliding element has jumped outwards, whereby the trigger for the switch disconnector is actuated, all that is needed is a new sleeve with the sliding element, the compression spring and the fuse wire, so that the exchange is very simple.
  • a medium voltage network there are three network conductors R, S, T in the outlet from a transformer station 10 in which the high voltage coming from the high voltage network R1, S1, T1 is transformed into medium voltage.
  • the three conductors R, S, T each have a PTC resistor 11, 12 and 13 serving as a non-linear resistor, to which a non-linear impedance 11a, 12a, 13a, preferably a varistor is assigned, and a disconnector 14 shown in broken lines with contact points 15, 16 and 17 in the conductors R, S, T.
  • the isolating switch 14 furthermore also comprises a switch actuating device 18 which has trigger elements 23, 24 and. via supply lines 19, 20, 21 which are connected to a common line 22 25 are connected.
  • the trigger elements 23, 24 and 25 are assigned to the PTC resistors 11, 12 and 13 and detect changes in the properties of the PTC resistors 11, 12 and 13, and they send signals via the lines 19, 20, 21, 22 due to the detected changes deliver, with which the actuating mechanism 18 is controlled so that contacts 15, 16 and 17 are opened.
  • the PTC resistors 11, 12 and 13 change their temperature and thereby their electrical resistance when the current values flowing in the conductors R, S, T increase, so that the current flowing through the contact points 15, 16 and 17 of the isolating switch 14 is limited.
  • a wide variety of means can be used as elements for detecting the change in the properties of the PTC resistors 11, 12 and 13.
  • a device 31 for detecting the change in the voltage across the PTC resistor is connected in parallel to a PTC resistor 30, the output signal of which is fed to the triggering or actuating mechanism 18 via a line 32.
  • PTC material 34 is located inside a casing 35 which is closed by a lower cover 36 made of electrically conductive material. There is a free space 38 between the upper end of the PTC material 34 and an upper end cover 37 and this free space is provided because the PTC material 34 changes its length in the event of an overcurrent and a subsequent increase in temperature. To detect this change in length, a plate 39 made of electrically conductive material is placed on the upper, free end of the PTC material, to which is connected an articulated lever arrangement 40 which mechanically controls the actuating device 18.
  • the sleeve 35 is made of electrically insulating material and a supply conductor 41 or discharge conductor 42 is connected to the cover 36 or the plate 39, with which the arrangement according to FIG. 3 can be used in the course of the network conductor R, for example.
  • the lever mechanism 40 is preferably made of insulating material.
  • the conductor 42 connected to the plate 39 is led out of the space 18 through an opening 43; the lever linkage 40 is connected to the plate 39 via a hole 44.
  • handrails can also be used, with a handrail in the middle PTC resistance can penetrate.
  • the material from which the sheath or the holding rods is or consist is insulating material, possibly with a non-linear voltage-dependent resistance value, e.g. B. varistor ceramic.
  • element 23 for example, with which changes in the properties of PTC material 11 are detected, is quasi integrated with the PTC resistor, and the lever linkage 40 corresponds in its mode of operation to cable line 19/22.
  • a PTC resistor 50 is used in, for example, the power line R; in parallel, a voltage measuring device 51 is connected, which supplies a voltage signal to an actuator 53 in the form of a piezo element via a line 52.
  • This voltage causes a change in length of the piezo element 53, which can be fed to the actuating mechanism 18 via a linkage 54, so that the contact point 11 can be opened, for example.
  • a piezo element 53 whose change in length can be used
  • a piezo element could also be used, the deflection of which can be used;
  • Corresponding piezo materials are, for example, from the Siemens font "Vibrit" piezoceramic from Siemens, order no. N-281/5053, 190 163 PA 2818.
  • FIG. 5 A PTC resistor 60 is inserted into a conductor R and a fuse 61 is connected in parallel therewith.
  • This fuse 61 is known per se and has a sleeve 62, one end of which is terminated with a contact cap 63 and the other end of which is terminated with a contact cap 64.
  • a guide piece 65 is crimped, in which a pin 66 is guided.
  • a fusible wire 67 Between the pin 66 and the lower cap 63 there is a fusible wire 67 and by means of a spring (not shown in FIG. 5) the pin 66 is acted upon in the direction of arrow A.
  • the cover caps 63 and 64 are connected to the mains conductor R via supply and discharge lines 67 and 68, so that the fuse 61 is connected in parallel with the PTC resistor. If there is an overcurrent occurs, the resistance of the PTC material will increase sharply, so that the current essentially flows through the fuse. As a result, the fuse wire 67 is melted and the pin 66 is brought into the dashed position 66a in the direction of arrow A. This movement of the pin 66 is fed to the actuating mechanism 18 so that the switch disconnector 14 can be actuated.
  • a relatively simple fuse can be used as a fuse, which can only withstand the voltage but does not have to carry a nominal current. It only needs to be designed for a small nominal current.
  • FIG. 6 Another embodiment of the invention is shown in FIG. 6.
  • a PTC resistor 71 is located within a sheath 70 made of insulating material.
  • the sheath 70 is closed with an electrically conductive cap 72, which cap has a cup shape with an L-shaped edge 73 with a flanged cross section, with which it encloses the lower end of the sheath 70.
  • An electrical conductor for example a conductor 41, is connected to the cap 72.
  • the upper end of the PTC material ends at a distance from the upper end of the sheath 70, which is closed there with a cap 74 which is the same as the cap 72.
  • an electrically conductive layer 75 On the upper end of the PTC material there is an electrically conductive layer 75, to which a conductor rod 76 is connected, which passes through an electromagnet system 77.
  • the upper end of the conductor track 76 is connected to the cap 74 in an electrically conductive manner.
  • a switching mechanism 78 with a release lever 79 Within the free space between the cover 75 and the cap 74 there is a switching mechanism 78 with a release lever 79 which interacts with a pawl projection 80 on a pin 81.
  • the release lever 79 is pivoted clockwise within the switching mechanism 78 and, under the pressure of a spring (not shown in more detail), the pin 81 is moved in the direction of arrow A after the release of the latch 80, whereby, as in the arrangement according to FIG 5 the operating mechanism 18 is operated in order to to open the switch.
  • the actuating mechanism is then not necessarily a switch lock.
  • the PTC material 88 is located within a sheath 85 made of electrically insulating material, which is closed at the top and bottom by a cap 86 and 87.
  • the PTC material has a central opening 89 which surrounds a conductor element 90 which surrounds the PTC resistor 88 at one end in the drawing slightly protrudes.
  • a plate 89a is screwed to the conductor element 90, which is also in electrically conductive connection with the PTC material 88.
  • a U-shaped contact element 91 in which a contact pin 92 engages, is located on the free end face of the conductor element 90 (located at the top in the drawing). Reference is now made to FIG. 8, which shows this area in an enlarged representation.
  • the contact element 91 has two contact legs 93 and 94, in which the pin 92 engages.
  • the pin 92 is integrally formed on a rotating part 95, which is fitted inside a sleeve 96 made of insulating material at its end facing the conductor element 90 and is crimped therein; the pin 92 protrudes from the sleeve 96 through an opening 97.
  • the upper end of the sleeve 96 is fixed to a retracted rim 98 of the pot base 99 of the cap 87 with a flange 91a.
  • An inner sleeve 100 made of metallic material extends telescopically into the interior of the sleeve 96 and is open to the bottom part of the sleeve 96 and closed in the area of the bottom part 99 of the cover cap 87. It ends at a distance from the rotating part 95 in order not to have an electrically conductive connection to the rotating part.
  • the outer sleeve 96 which is made of insulating material, has lateral openings (not shown) in the region of the flange edge 91a, through which contact springs (not shown) formed on the inner sleeve reach outwards to the rim 98 of the pot base 99.
  • the inner sleeve 10 is a sliding element and encloses a compression spring 101, one end of which is supported on the rotating part 95 and the other end of which is supported on the upper closed end of the inner sleeve 100.
  • the Compression spring 101 is surrounded by insulating material, so that current flow through the compression spring 101 is prevented.
  • a fuse wire 103 is provided between the upper end of the inner sleeve or a contact plate 102 arranged there and the rotating part 95.
  • a guide spindle 111 made of insulating material is screwed onto a conductor element 110 screwed into the PTC material 88 and projects above the upper end of the PTC resistor 88.
  • the guide spindle 111 is provided in the region of the upper cap 87 with a guide base 112, into which the lower end of an outer sleeve 113 is pressed, which has a flange at the inner end 114 located inside the guide 112.
  • a compression spring 115 is supported on this flanging 114, the other end of which is supported on the inwardly flanged upper end 116 of an inner sleeve 117.
  • the inner sleeve is firmly connected to a rod 118.
  • This rod 118 engages through the guide area 112 up to the vicinity of the free end of the conductor piece 110, on which a spring element 119 is fastened, which has a U-shape with two legs 120 and 121, which is approximately V-shaped at its free ends are bent inside and thus form a constriction 122.
  • the mushroom-shaped inner end 123 of the rod 118 engages in this constriction 122 and is supported by the spring element 119 held against the pressure of the spring 115.
  • the spring element 119 in which the two legs 120 and 121 are spread, deforms and thus releases the rod 118 so that it moves in the direction of arrow A under the pressure of the spring 115 can move outwards. This movement in the direction of arrow A then actuates the actuating mechanism 18 of the switch.
  • the material from which the spring element 119 is made can either be a thermobimetal or a shape memory alloy.
  • the casing 70 or 85 of the designs according to FIGS. 6 to 10 is made of insulating material.
  • this insulating material can be varistor ceramic.
  • the reason for using the varistor ceramic is evident from the above-mentioned German patent application.
  • an electrically conductive connection from the lower cap 86 to the PTC material 88 is provided via a stranded wire 130; from the upper end of the PTC material to the cap 87, another stranded wire 131 is provided; a certain part of the current now flows through the conductor element 90 and the fuse wire 103 or the conductor element 110 and the sleeve 111 or the spring element 119 and the rod 118 to the cover cap 87. This results in a parallel connection of the PTC material 88 and the fuse wire 103 or spring element 119 reached.
  • the fuse wire and the U-shaped spring element 119 need only carry part of the current with the conductor 118.
  • the conductor 118 has to be pressed in again, which can be done manually or by remote control. 7 and 8, only the securing element with the sleeve 96, the inner sleeve 100, the fuse wire 103 and the compression spring 101 will have to be replaced. Since these components have only a small amount of electricity to carry, since the main part of the current over the PTC resistor and the leads 130 and 131 leads, this fuse element can be quite inexpensive. If the arrangement according to FIGS. 7 and 8 has responded, only the securing element needs to be replaced with a new one.
  • the inner sleeves can be designed as a sliding element for actuating the switching device or for unlatching an actuating device designed as a switching lock.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Fuses (AREA)
  • Thermistors And Varistors (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP94118458A 1993-11-30 1994-11-24 Dispositif interrupteur électrique Expired - Lifetime EP0655760B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4340632A DE4340632A1 (de) 1993-11-30 1993-11-30 Elektrische Schalteinrichtung
DE4340632 1993-11-30

Publications (3)

Publication Number Publication Date
EP0655760A2 true EP0655760A2 (fr) 1995-05-31
EP0655760A3 EP0655760A3 (fr) 1997-06-04
EP0655760B1 EP0655760B1 (fr) 2000-01-05

Family

ID=6503704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118458A Expired - Lifetime EP0655760B1 (fr) 1993-11-30 1994-11-24 Dispositif interrupteur électrique

Country Status (6)

Country Link
EP (1) EP0655760B1 (fr)
JP (1) JPH087721A (fr)
CN (1) CN1110000A (fr)
DE (2) DE4340632A1 (fr)
DK (1) DK0655760T3 (fr)
ES (1) ES2143518T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702094A1 (de) * 1997-01-22 1998-07-23 Abb Research Ltd Leistungsschaltvorrichtung
US6259349B1 (en) 1998-07-25 2001-07-10 Abb Research Ltd. Electrical component with a constriction in a PTC polymer element
US6492799B1 (en) 1999-06-17 2002-12-10 Abb Research Ltd Monitor circuit for a current limiting device
US6628485B1 (en) 1999-06-17 2003-09-30 Abb Research Ltd Apparatus for limiting an electrical current
EP3416179A1 (fr) * 2017-06-16 2018-12-19 Schneider Electric Industries SAS Appareil de protection électrique comportant un dispositif limiteur de courant

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534442A1 (de) * 1995-09-16 1997-03-27 Abb Research Ltd Überstromschutzvorrichtung
DE19606597A1 (de) * 1996-02-22 1997-08-28 Abb Patent Gmbh Mittel-oder Niederspannungsschaltanlage
DE19955217A1 (de) * 1999-11-17 2001-05-23 Abb Patent Gmbh Lastschalter
DE102005006953A1 (de) * 2005-02-16 2006-08-17 Abb Patent Gmbh Schaltgerät mit PTC-Element
CN102137772B (zh) * 2008-09-01 2013-08-21 株式会社Lg化学 控制电池组和负载之间的开关单元的装置和方法及包括该装置的电池组和电池管理装置
GB2471869B (en) * 2009-07-15 2012-04-25 Vishay Resistors Belgium Bvba Thermal switch
CN105723489B (zh) * 2013-08-05 2019-06-04 英诺锂资产公司 具有阻断半导体的换向开关
DE102015218724A1 (de) 2015-09-29 2017-03-30 Siemens Aktiengesellschaft Anordnung und Verfahren zum Auslösen einer Schaltbewegung eines Leistungsschalters
DE102020108880B4 (de) * 2020-03-31 2024-05-08 Infineon Technologies Ag Sensorvorrichtungen mit Bypassstrompfad und zugehörige Herstellungsverfahren

Citations (5)

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GB2055264A (en) * 1979-07-17 1981-02-25 Bbc Brown Boveri & Cie A circuit protection switch
EP0363746A1 (fr) * 1988-10-13 1990-04-18 Asea Brown Boveri Ab Dispositif de protection contre les surintensités pour réseaux électriques et appareils
WO1991012643A1 (fr) * 1990-02-08 1991-08-22 Asea Brown Boveri Ab Dispositif de protection contre les surcharges du moteur et contre les courts-circuits
EP0519346A1 (fr) * 1991-06-18 1992-12-23 ABBPATENT GmbH Disjoncteur de protection
WO1993007667A1 (fr) * 1991-10-07 1993-04-15 Asea Brown Boveri Ab Dispositif de protection contre la surcharge et les courts-circuits dans des installations electriques

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DE764828C (de) * 1937-12-31 1952-11-24 Siemens Schuckertwerke A G Einrichtung zum Unterbrechen oder Regeln von Wechselstroemen
DE2835064A1 (de) * 1978-08-08 1980-02-14 Siemens Ag Elektrischer leistungsschalter mit einem widerstand
DE3338799A1 (de) * 1983-10-26 1985-05-09 Brown, Boveri & Cie Ag, 6800 Mannheim Thermischer ausloeser
US4616206A (en) * 1984-09-07 1986-10-07 Eaton Corporation Circuit breaker and shunt trip apparatus combined within single pole device
JPS61108182A (ja) * 1984-11-01 1986-05-26 Toshiba Corp 積層形圧電素子装置とその使用方法
SU1411880A1 (ru) * 1986-06-11 1988-07-23 Государственный Макеевский Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности Устройство дл проверки средств защиты трехфазной сети от перенапр жений
US4967176A (en) * 1988-07-15 1990-10-30 Raychem Corporation Assemblies of PTC circuit protection devices
EP0353816B1 (fr) * 1988-08-01 1993-12-22 Matsushita Electric Works, Ltd. Alliage en mémoire de forme et dispositif de détection pour circuit électrique utilisant cet alliage
DE4021945C2 (de) * 1990-07-10 1999-12-30 Alstom Sachsenwerk Gmbh Schaltvorrichtung zur Unterbrechung von Fehlerströmen
FR2677485A1 (fr) * 1991-06-07 1992-12-11 Stopcircuit Sa Appareil de coupure en charge pour circuit electrique.
DE4143095C1 (en) * 1991-12-27 1993-04-08 Roederstein Spezialfabriken Fuer Bauelemente Der Elektronik Und Kondensatoren Der Starkstromtechnik Gmbh, 8300 Landshut, De Electrical building block, for simplicity and reliability - comprises resistor in series with melt fuse and connection element forming protective wall section, fixed on substrate with silicone adhesive
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055264A (en) * 1979-07-17 1981-02-25 Bbc Brown Boveri & Cie A circuit protection switch
EP0363746A1 (fr) * 1988-10-13 1990-04-18 Asea Brown Boveri Ab Dispositif de protection contre les surintensités pour réseaux électriques et appareils
WO1991012643A1 (fr) * 1990-02-08 1991-08-22 Asea Brown Boveri Ab Dispositif de protection contre les surcharges du moteur et contre les courts-circuits
EP0519346A1 (fr) * 1991-06-18 1992-12-23 ABBPATENT GmbH Disjoncteur de protection
WO1993007667A1 (fr) * 1991-10-07 1993-04-15 Asea Brown Boveri Ab Dispositif de protection contre la surcharge et les courts-circuits dans des installations electriques

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702094A1 (de) * 1997-01-22 1998-07-23 Abb Research Ltd Leistungsschaltvorrichtung
US6038117A (en) * 1997-01-22 2000-03-14 Abb Research Ltd. Power switching apparatus
DE19702094B4 (de) * 1997-01-22 2008-01-24 Abb Research Ltd. Leistungsschaltvorrichtung
US6259349B1 (en) 1998-07-25 2001-07-10 Abb Research Ltd. Electrical component with a constriction in a PTC polymer element
US6492799B1 (en) 1999-06-17 2002-12-10 Abb Research Ltd Monitor circuit for a current limiting device
US6628485B1 (en) 1999-06-17 2003-09-30 Abb Research Ltd Apparatus for limiting an electrical current
EP3416179A1 (fr) * 2017-06-16 2018-12-19 Schneider Electric Industries SAS Appareil de protection électrique comportant un dispositif limiteur de courant
FR3067870A1 (fr) * 2017-06-16 2018-12-21 Schneider Electric Industries Sas Appareil de protection electrique comportant un dispositif limiteur de courant
US10741350B2 (en) 2017-06-16 2020-08-11 Schneider Electric Industries Sas Electrical protection unit including a current limiter device

Also Published As

Publication number Publication date
CN1110000A (zh) 1995-10-11
EP0655760A3 (fr) 1997-06-04
JPH087721A (ja) 1996-01-12
DE59409050D1 (de) 2000-02-10
EP0655760B1 (fr) 2000-01-05
ES2143518T3 (es) 2000-05-16
DK0655760T3 (da) 2000-05-29
DE4340632A1 (de) 1995-06-01

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