WO2013139870A1 - Dc-schalter ohne loeschkammern - Google Patents
Dc-schalter ohne loeschkammern Download PDFInfo
- Publication number
- WO2013139870A1 WO2013139870A1 PCT/EP2013/055856 EP2013055856W WO2013139870A1 WO 2013139870 A1 WO2013139870 A1 WO 2013139870A1 EP 2013055856 W EP2013055856 W EP 2013055856W WO 2013139870 A1 WO2013139870 A1 WO 2013139870A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switch according
- current
- arc
- conductors
- switch
- Prior art date
Links
Classifications
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- 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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
Definitions
- the invention relates to a switch, in particular with extinguishing chamber-free
- the switch which is provided in particular for a DC operation comprises two current partial conductor for guiding a load current, wherein in an on state, an electrically conductive connection between the two current part conductors is provided, which is interrupted in an off state is.
- a magnetic field is for influencing a caused by the interruption of the electrically conductive connection between the two current divider conductors
- Electrical switches are components in a circuit that establish or disconnect an electrically conductive connection by means of internal, electrically conductive contacts. With a live connection to be cut, current flows through the contacts until they are separated. When a circuit is disconnected by a switch, the current flow does not immediately decrease to zero, so that an arc can form between the contacts.
- the arc is a gas discharge by a per se non-conductive medium, such as air.
- AC alternating current
- arcs usually erase at the zero crossing of the alternating current. Since such a zero crossing of the current in switches with DC operation (DC) is missing, stable arcing can occur when disconnecting the contacts. If the circuit is operated with sufficient current and voltage, for example, more than about one ampere and more than 50 volts, the arc does not automatically go out. For this reason, in such switches, the extinction of the arc by the
- Magnetic blow field is generated either externally via a permanent magnet system or via a self-magnetic field generated in the switch, caused by suitable structural design of the current paths in the switching device, and drives the switching arc in an extinguishing system,
- Object of the present invention is to realize a switch, preferably for DC currents, in which it by continuous energy extraction at At the same time only low thermal load of the switch components to a fast extinction of the switching arcs comes.
- the switch according to the invention has two current sub-conductors for guiding a
- a coil is arranged around at least one of the current partial conductors, wherein the coil is provided as a guide device for the arc.
- a coil in the sense of the invention is to be understood as meaning a device made of material which is conductive at least on the surface and which is suitable for guiding the arc along and simultaneously around the current conductor.
- the coil consists of a single layer turns, the turns do not touch. Alternatively, a designation would be a helical or spiral helix for the
- the magnetic field acts on the arc in such a way that it is conducted along the coil.
- Bridge switching piece for the preparation and interruption of the electrically conductive connection between the two current divider conductors provided, wherein a coil is arranged around each of the two Stromteilleiter as an arc guiding device.
- Stromteilleiter have a substantially cylindrical shape and are arranged along a longitudinal axis. At mutually facing ends have the
- Peripheral contact area in particular of erosion-resistant contact material, for contacting corresponding contact pieces of a bridge contact piece on.
- the contacting takes place on the circumference of the power conductor, where the
- Arcs initially arise, which are also performed over the circumference of the current conductor.
- the current partial conductors have a bead-like thickening, which in each case extends helically around a longitudinal axis on the circumference.
- Thickening corresponds to a slope of the helical coils, so that the thickening is facing the arc conductor everywhere.
- Arrangement extend the arc bases advantageously along the apex line of the bead-like thickening.
- Mutually facing dropouts of the coils preferably extend into the interior of the coil such that the bridge contact is located between the current dividers and the dropouts, thereby facilitating passage of the arc from the bridge contact to the coils. This further assists in when the bridge switch is positioned in the off state immediately adjacent to the dropouts, and more particularly when the bridge switch has recesses that partially surround the dropouts in the off state.
- Another variant is that the remotely located ends of the coils are not connected to each other and instead in the off state, an electrically conductive contact by physical contact between the dropouts and the
- Going out of at least one of the arcs is interrupted.
- Permanent magnet arrangement provided with two sub-assemblies, in each case two substantially parallel to each other aligned permanent magnets form a subassembly, wherein a first sub-array substantially parallel to the current dividing conductors extending field lines generated, ie at the front ends the deflection coils is arranged, and wherein a second subassembly in
- Permanent magnet arrangement are the result of a superposition of
- the permanent magnet arrangement is preferably equipped with permanent magnets made of rare earth materials, for example Nd-Fe-B or Sa-Co, for obtaining a high magnetic field strength.
- the magnetic poles of the permanent magnets are suitably connected to U-shaped pole plates to obtain a magnetic field of high homogeneity.
- the switch each has a plate made of insulating material, preferably of ceramic or thermosetting plastic, which between the located at the front ends of the deflection coils permanent magnets or their pole plates and the outer ends of the deflection coils to protect the
- cylindrical shape causes a faster extinction of the switching arc.
- Coils of metal U-profile can be used particularly advantageously, wherein a rounded web portion of the U-profile faces the coil interior.
- the arc bases advantageously extend along the apex line of the U-profile.
- the switch is hermetically sealed and with a switching gas of hydrogen or a strong filled hydrogen-containing gas mixture. Due to the considerably improved compared to the conventional atmospheric air arc cooling the arc burning time is considerably shortened, resulting in a comparatively compact design of
- FIG. 1 shows a first embodiment of the switch according to the invention
- Figure 2 shows a second embodiment of the switch according to the invention
- FIGs 3 and 4 details of the embodiments of Figures 1 and 2.
- FIG. 1 shows the basic structure of a first embodiment of the switch according to the invention. It is shown a largely concentric switching arrangement, in the longitudinal axis X, two axially aligned, cylindrical current partial conductor 10, 11 are arranged to guide a load current. in the
- the switched case is between the two sub-conductors 10, 11 an electrical connection, preferably by contacting with an electrically conductive bridge contact piece 20 which is mounted in a movable switching bridge 25, with two contact pieces 21 made of a preferably burned and welded solid contact material at the end ,
- the bridge switch piece 20 is, for example, mechanically connected to a magnetic drive (not shown), which causes movement of the bridge switch piece 20 perpendicular to the longitudinal axis X of the cylindrical current conductor 10, 11, which is represented by the double arrow P.
- Bridge switching piece 20 the facing ends of the cylindrical Stromteilleiter 10, 11 on the circumference, in particular directly in a region behind the end faces.
- the peripheral region 12 affected by the contacting likewise consists, analogously to the bridge contacts 21, of a contact material that is preferably burnt and welded.
- the two cylindrical current partial conductors 10, 11 are coaxially surrounded by two axially aligned in the axial direction X arranged coils 31, 32, which consist at least on the surface of electrically conductive material and which further consist of a single layer turns, which do not touch mechanically.
- the two outer ends of these so-called deflection coils are electrically connected to each other.
- Two inside dropouts 35, 36 of these coils 31, 32 are each angled towards the inside of the coil, wherein the bridge switching piece 20 is positioned in each case between the dropout 35, 36 and the peripheral region 12 of the current partial conductor 10, 11. Further preferably, the two dropouts 35, 36 parallel to each other, offset in the axial direction X, wherein the offset in
- Bridge switch piece 20 is positioned in the off state immediately adjacent to the dropouts 35, 36 and in particular has a recess which partially surrounds the dropouts 35, 36 in the off state.
- An unillustrated variant is that the remotely located ends of the coils are separated and instead, in the off state, an electrically conductive contact is made by physical contact between the dropouts 35, 36 and the bridge contactor 20. The arrangement thus described is located inside a
- Permanent magnet arrangement consisting of two individual sub-assemblies, each with two mutually parallel permanent magnets.
- one of these two sub-assemblies consists of two individual, located behind the outer end faces of the deflection and arranged parallel to each other, plate-shaped permanent magnets 41, 42 which build up an approximately homogeneous magnetic field inside the deflection coils 31, 32, wherein the field lines parallel to the two axially oriented cylindrical flow part conductors 10, 11 extend.
- this magnetic field can also be formed by a system of two plane-parallel, magnetically highly conductive sheets, which are connected to a permanent magnet in such a way that between them
- a second permanent magnetic subassembly is formed in such a way that outside the scope of the deflection coils 31, 32 in height of the two
- Dropouts 35, 36 two further permanent magnets 45, 46 are formed in the direction perpendicular to the longitudinal axis X in the region of the switch contacts, in particular parallel to the dropouts 35, 36 form an approximately homogeneous magnetic field perpendicular to the magnetic field of the first subassembly 41, 42nd stands.
- the two axially aligned current partial conductors 10, 11 are connected to one another by the bridge contact piece 20, so that the load current flows through the two current partial conductors 10, 11 and the bridge contact piece 20 in full length.
- Bridge switching piece 20 and the two peripheral regions 12 at the ends of the current partial conductor 10, 11 two parallel switching arcs with opposite
- Arcs make the same spiral motion on the cylindrical surface.
- the arc column undergoes a permanent spiral rotary motion, which is through that of the located at the end faces of the deflection coils
- Permanent magnet 41, 42 generated magnetic field is effected.
- the magnetic field generated by the two other permanent magnets 45, 46 causes a
- the dimensions of the described switching arrangement and the magnetic field strengths of the permanent magnetic arrangements are dimensioned so that the switching arcs always extinguish in the rated current operation before they reach outer ends of the deflection coil 31, 32.
- To protect the permanent magnetic assembly 41, 42 at the end faces of the deflection coils 31, 32 against arcing in the case of overcurrents is located between the permanent magnets 41, 42 or their pole plates and the outer ends of the
- Deflection coils 31, 32 each have a plate of insulating material 50, preferably made of ceramic or a thermosetting plastic.
- FIG. 2 shows a second embodiment of the switch according to the invention with deflection coils 31, 32 of conical shape 60, wherein a
- Outer diameter of the coils 31, 32, starting from the dropouts 35, 36 increases continuously in the axial direction in each case to the outside. In this way, the switching arcs during their spiral rotational movement
- the current partial conductor 10 has the bead-like thickening 15, which is
- Increase of the helices of the bead-like thickenings 15 corresponds to a slope of the helical coils 31, 32, so that the thickening 15 faces the arc conductor everywhere.
- the arc root points advantageously extend along the apex line of the bead-like thickening 15.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013001624.9T DE112013001624A5 (de) | 2012-03-21 | 2013-03-20 | DC-Schalter ohne Löschkammern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12160540.6 | 2012-03-21 | ||
EP12160540.6A EP2642500A1 (de) | 2012-03-21 | 2012-03-21 | DC-Schalter ohne Löschkammern |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013139870A1 true WO2013139870A1 (de) | 2013-09-26 |
Family
ID=48045441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/055856 WO2013139870A1 (de) | 2012-03-21 | 2013-03-20 | Dc-schalter ohne loeschkammern |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2642500A1 (de) |
DE (1) | DE112013001624A5 (de) |
WO (1) | WO2013139870A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113826183A (zh) * | 2019-03-18 | 2021-12-21 | 伊顿智能动力有限公司 | 用于快速断开短路电流的开关装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2184944A1 (de) * | 1972-05-17 | 1973-12-28 | Siemens Ag | |
DE2305572A1 (de) * | 1973-02-05 | 1974-08-08 | Siemens Ag | Verfahren zur loeschung eines lichtbogens und anordnung zur durchfuehrung des verfahrens |
DE2311311A1 (de) * | 1972-05-17 | 1974-09-12 | Siemens Ag | Anordnung zur loeschung eines lichtbogens |
JPS518462B1 (de) * | 1970-10-07 | 1976-03-17 | ||
DE19524915A1 (de) * | 1995-07-08 | 1997-01-09 | Abb Patent Gmbh | Lichtbogenlöschanordnung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter |
EP0980085A2 (de) * | 1998-08-13 | 2000-02-16 | Siemens Aktiengesellschaft | Leitungsschutzschalter mit lichtbogenbetätigter Blasspule |
EP1548772A1 (de) * | 2003-12-22 | 2005-06-29 | ABB Schweiz Holding AG | Lichtbogenlöscheinrichtung für Schutzschalter mit Doppelunterbrechung |
EP2061053A2 (de) | 2007-11-17 | 2009-05-20 | Moeller GmbH | Schaltgerät für Gleichstrom-Anwendungen |
-
2012
- 2012-03-21 EP EP12160540.6A patent/EP2642500A1/de not_active Withdrawn
-
2013
- 2013-03-20 WO PCT/EP2013/055856 patent/WO2013139870A1/de active Application Filing
- 2013-03-20 DE DE112013001624.9T patent/DE112013001624A5/de not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS518462B1 (de) * | 1970-10-07 | 1976-03-17 | ||
FR2184944A1 (de) * | 1972-05-17 | 1973-12-28 | Siemens Ag | |
DE2311311A1 (de) * | 1972-05-17 | 1974-09-12 | Siemens Ag | Anordnung zur loeschung eines lichtbogens |
DE2305572A1 (de) * | 1973-02-05 | 1974-08-08 | Siemens Ag | Verfahren zur loeschung eines lichtbogens und anordnung zur durchfuehrung des verfahrens |
DE19524915A1 (de) * | 1995-07-08 | 1997-01-09 | Abb Patent Gmbh | Lichtbogenlöschanordnung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter |
EP0980085A2 (de) * | 1998-08-13 | 2000-02-16 | Siemens Aktiengesellschaft | Leitungsschutzschalter mit lichtbogenbetätigter Blasspule |
EP1548772A1 (de) * | 2003-12-22 | 2005-06-29 | ABB Schweiz Holding AG | Lichtbogenlöscheinrichtung für Schutzschalter mit Doppelunterbrechung |
EP2061053A2 (de) | 2007-11-17 | 2009-05-20 | Moeller GmbH | Schaltgerät für Gleichstrom-Anwendungen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113826183A (zh) * | 2019-03-18 | 2021-12-21 | 伊顿智能动力有限公司 | 用于快速断开短路电流的开关装置 |
CN113826183B (zh) * | 2019-03-18 | 2023-11-07 | 伊顿智能动力有限公司 | 用于快速断开短路电流的开关装置 |
US11875959B2 (en) | 2019-03-18 | 2024-01-16 | Eaton Intelligent Power Limited | Switching device for fast disconnection of short-circuit currents |
Also Published As
Publication number | Publication date |
---|---|
EP2642500A1 (de) | 2013-09-25 |
DE112013001624A5 (de) | 2014-12-31 |
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