CN110556262B - High-voltage circuit breaker - Google Patents
High-voltage circuit breaker Download PDFInfo
- Publication number
- CN110556262B CN110556262B CN201910456332.3A CN201910456332A CN110556262B CN 110556262 B CN110556262 B CN 110556262B CN 201910456332 A CN201910456332 A CN 201910456332A CN 110556262 B CN110556262 B CN 110556262B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- voltage circuit
- tulip
- channel
- contact element
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 241000722921 Tulipa gesneriana Species 0.000 claims description 42
- 238000007664 blowing Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
- H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions
-
- 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
- H01H33/22—Selection of fluids for arc-extinguishing
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Landscapes
- Circuit Breakers (AREA)
Abstract
The invention relates to a high-voltage circuit breaker (1) having a main nozzle (7), an auxiliary nozzle (6) and a heating channel (10) arranged between them, the heating channel (10) leading to a heating space (8). In addition, a further channel (13) is present between the auxiliary nozzle (6) and the first contact element (3) of the two contact elements. According to the invention, the further channel (13) is closed at the end and the distance (L1) between the stagnation point (12) and the narrowest position of the first contact element (3) measured in the direction of the central axis (2) lies in the range between 5 mm and 20 mm.
Description
Technical Field
The present invention relates to a high voltage circuit breaker.
Background
High voltage circuit breakers have been known for a long time. The high-voltage circuit breaker has two contact elements which are movable relative to each other along a central axis of the high-voltage circuit breaker. There is an arc zone between the two contact elements in which an arc is generated when switching the high-voltage circuit breaker, it being necessary to extinguish the arc, for example with an extinguishing gas.
Fig. 1 shows a cross-sectional illustration of a portion of a prior art high voltage circuit breaker. The high-voltage circuit breaker 1 has two opposing contact elements 3, 4 which are movable relative to each other along a central axis 2 of the high-voltage circuit breaker by means of a drive. The contact element 3 takes the form of a metal tulip contact, while the contact element 4 takes the form of a metal pin contact. An arc zone 5 is provided between the two contact elements 3, 4, for example when the high-voltage circuit breaker is opened and the two contact elements are separated from each other, an arc is formed in the arc zone 5.
Furthermore, the high-voltage circuit breaker 1 shown in fig. 1 has a substantially cylindrical auxiliary nozzle 6, which at least partially encloses the contact element 3. The inner surface 6a of the auxiliary nozzle faces the arc zone 5.
Furthermore, the high-voltage circuit breaker 1 shown has a main nozzle 7, which at least partially encloses the auxiliary nozzle 6.
A channel 10 is formed between the auxiliary nozzle 6 and the main nozzle 7, the channel 10 connecting the arc zone 5 with a blowing space (volume) 8, in particular a heating space and/or a blowing piston space 8. The blowing space 8 is arranged outside the auxiliary nozzle 6 in the radial direction 9. The channel 10 has an angled design and has a first channel section 10a and a second channel section 10b. The first channel section 10a opens into the arc zone 5 and extends at right angles to the central axis 2, i.e. in the radial direction 9. The second channel section 10b opens into the blowing space 8 and extends parallel to the central axis 2, i.e. in the axial direction 11, between the auxiliary nozzle 6 and the main nozzle 7.
An additional channel 13 is formed between the metal tulip contact 3 and the auxiliary nozzle 6. Thus, during the opening phase of the high-voltage circuit breaker, a gas flow occurs in the region between the auxiliary nozzle 6 and the metal tulip contact 3.
According to DE102009009450A1, a switching device assembly with a switching gas intermediate storage device and a flow direction control device protruding into the latter belongs to the prior art. The flow direction control device is designed at least in some sections as a venturi nozzle with an outlet opening. The switchgear assembly also has an arc contact element, an arc direction control nozzle, and an auxiliary nozzle. One of the arcing contact elements is tubular and has a seat at its end facing the other arcing contact element. The second arcing contact element is designed with an opposite pin-like shape such that it can be inserted into the seat of the first arcing contact element and an galvanic contact between the two arcing contact elements is achieved. A switching gas outlet channel is formed between the arc direction control nozzle and the auxiliary nozzle. In its radially outer region, the tubular arc contact element is located directly on the auxiliary nozzle.
Disclosure of Invention
The object of the present invention is to specify a high-voltage circuit breaker whose current breaking capacity is improved. This object is achieved by a high voltage circuit breaker having the features specified in claim 1. Advantageous designs and improvements are specified in the dependent claims, in the combination of the claims and in the description and the drawing.
The high voltage circuit breaker specified in claim 1 has: two opposing contact elements movable relative to each other along a central axis of the high voltage circuit breaker; an arc zone disposed between the two contact elements; an auxiliary nozzle at least partially surrounding one of the contact elements; a primary nozzle at least partially surrounding the secondary nozzle; a channel which connects the arc zone to the blowing space, in particular the heating space and/or the blowing piston space, and which has a first channel section, wherein the first channel section opens into the arc zone and forms a stagnation point in the outlet region (in particular when blowing an arc); and a further channel extending between the auxiliary nozzle and a first of the two contact elements, wherein the further channel extending between the auxiliary nozzle and the first of the two contact elements is closed at the end, and wherein the distance between the stagnation point and the narrowest position of the first contact element is in the range between 5mm and 20 mm.
Here, the distance along the central axis between the stagnation point and the narrowest position of the first contact element is measured. In particular, the first contact element encloses a space and has a smallest cross-sectional area through the space at right angles to the central axis, wherein the intersection of the smallest cross-sectional area with the central axis defines the narrowest position of the first contact element.
A high-voltage circuit breaker designed in this way has the following advantages: even with a (very) small distance between the stagnation point and the narrowest position of the first contact element, a (very) sharp pressure distribution can be formed, which is largely independent of the shape or design of the auxiliary nozzle. Thus, even in the case of abrasion of the auxiliary nozzle and thus a change in the surface or in the case of burning through of the auxiliary nozzle, the pressure distribution hardly changes. The small acceleration distance (according to the invention, its length is in the range between 5 mm and 20 mm) and the tulip-type channel closed at the ends (i.e. the further channel closed at the ends) result in an improved current breaking capability of the high-voltage circuit breaker.
In an example of embodiment, this current breaking capability is further enhanced by the fact that: the tulip-type slot present in the contact element designed as a tulip-type contact is also dimensioned as small as possible, in particular less than or equal to 1mm, or less than or equal to 0.8 mm, or less than or equal to 0.6 mm.
Further advantageous properties of the invention result from the exemplary illustration of the invention based on the drawing.
Drawings
Fig. 1 shows a cross-sectional illustration of a part of a high voltage circuit breaker according to the prior art.
Fig. 2 shows a cross-sectional illustration of a portion of an exemplary high voltage circuit breaker in accordance with an embodiment of the present invention.
REFERENCE SIGNS LIST
1. High-voltage circuit breaker
2. Central axis of high-voltage circuit breaker
3. A first contact element; tulip type contact
3A inner surface of the first contact element
3B outer surface of the first contact element in the tulip channel
4. A second contact element; pin type contact
5. Arc zone
6. Auxiliary nozzle
6A inner surface of auxiliary nozzle 6 in the arc zone
6B axial end region of auxiliary nozzle 6
6C inner surface of auxiliary nozzle 6 in tulip-type passage
7. Main nozzle
7A inner surface of the main nozzle 7 in the arc zone
7B axial end region of the main nozzle 7
8. A heating space, a blowing piston space; blowing space
9. Radial direction
10. Channel, heating channel
10A first channel section
10B second channel section
11. Axial direction
12. Stagnation point
13. Additional channels, tulip type channels
13A closed position
Axial position of Mach 1 plane
F axial position of the first boundary of the first channel section 10a
The axial position of the second boundary of the g-channel section 10 a.
Detailed Description
Fig. 2 shows a cross-sectional illustration of a portion of an exemplary high voltage circuit breaker in accordance with an embodiment of the present invention. The high-voltage circuit breaker 1 has two opposing contact elements 3, 4 which are movable relative to each other along a central axis 2 of the high-voltage circuit breaker by means of a drive. The contact element 3 takes the form of a metal tulip contact, while the contact element 4 takes the form of a metal pin contact. Between the two contact elements 3, 4 there is an arc zone 5, in which arc zone 5 an arc is formed, for example when the high-voltage circuit breaker is opened and the two contact elements are separated from each other. The tulip contact has tulip fingers and tulip slots (not visible in fig. 2) provided between the tulip fingers, the tulip slots allowing the tulip fingers to deform to accommodate the pin contact 4.
Furthermore, the high-voltage circuit breaker 1 shown in fig. 2 has a cylindrical auxiliary nozzle 6, which at least partially encloses the contact element 3 formed as a tulip contact. The region of the inner surface 6a of the auxiliary nozzle 6 that is positioned in the arc zone 5 faces the arc zone 5. The inner surface 6c of the auxiliary nozzle 6 adjacent to the radially outer surface 3b of the contact element 3 extends (substantially) in the axial direction 11. Between the radially outer surface 3b of the contact element 3 and the inner surface 6c of the auxiliary nozzle 6, a tulip-shaped channel 13 is formed, which tulip-shaped channel 13 according to the invention has a closed position 13a in its end region (on the left-hand side of fig. 2) and surrounds the tulip-shaped finger in its other end region at a distance, or partly encloses the tulip-shaped finger, or adjoins the tulip-shaped finger. By closing the tulip channel 13 in its first mentioned (left-hand) end region, it is achieved that no gas flow or substantially no gas flow occurs in the tulip channel 13 or through the tulip channel during the opening phase of the high voltage circuit breaker.
This effect is preferably further improved, since the tulip-type slot present in the tulip-type contact 3, which allows the finger deformation of the tulip-type contact, also has a small size, preferably less than or equal to 1 mm. This effect is further improved if the tulip slot is selected to be less than or equal to 0.8 mm. In a particularly preferred embodiment, the tulip slot is selected to be less than or equal to 0.6 mm.
Furthermore, the high-voltage circuit breaker 1 shown here has a main nozzle 7, which at least partially encloses the auxiliary nozzle 6. The portion of the inner surface 7a of the main nozzle 7 that is positioned in the arc zone faces the arc zone 5.
A channel 10 (which is also referred to as a heating channel 10) is formed between the auxiliary nozzle 6 and the main nozzle 7, the channel 10 connecting the arc zone 5 with the blowing space 8 (in particular the heating space 8 and/or the blowing piston space 8). The blowing space 8 is arranged outside the auxiliary nozzle 6 in the radial direction 9. The channel 10 is typically of an angled design and has a first channel section 10a and a second channel section 10b. The first channel section 10a extends at right angles or almost at right angles with respect to the central axis 2 of the high voltage circuit breaker, i.e. extends (substantially) in the radial direction 9. The second channel section 10b extends parallel or almost parallel to the central axis 2 between the auxiliary nozzle 6 and the main nozzle 7, i.e. extends (substantially) in the axial direction 11.
In addition, fig. 2 shows a stagnation point 12, which is positioned on the central axis 2. At this stagnation point 12, when the arc is blown in the radial direction by the extinguishing gas flowing back from the blowing space 8 (in particular from the heating space 8 and/or the blowing piston space 8) through the heating channel 10, the flow velocity of the gas is zero.
The stagnation point 12 is present at an axial position on the central axis of the high-voltage circuit breaker 1, which is located between the end section 7b of the main nozzle 7 defining the channel section 10a and the end section 6b of the auxiliary nozzle 6 defining the channel section 10a on the other side of the channel section 10 a. Fig. 2 shows the axial position of the end section 7b of the main nozzle 7 by means of a dashed line marked with the letter g. In fig. 2, the axial position of said end section 6b of the auxiliary nozzle 6 (or of the axial end face 6b of the auxiliary nozzle 6 defining the channel section 10 a) is indicated by a dashed line marked with the letter f. Fig. 2 also shows the narrowest position (throat) of the tulip contact 3 with a dashed line marked by the letter e.
The stagnation point 12 is arranged in the axial region at the junction between the first channel section 10a and the arc zone 5, i.e. in the axial region between the dashed lines f and g. In the case of supersonic flow, the Mach (Mach) 1 plane is positioned in the axial region of the narrowest position (throat) of the tulip contact 3 (which is marked by the dashed line e).
According to the invention, the distance L1 of the stagnation point 12 from the narrowest position of the tulip contact 3 is chosen to be very small and in the range between 5mm and 20 mm. The range is chosen such that, on the one hand, the axial acceleration distance is not too short to avoid turbulence on the arc surface, and, on the other hand, the axial acceleration distance is long enough to ensure an increase in pressure distribution. In a preferred design, the distance L1 from the narrowest position of the tulip contact 3 to the stagnation point 12 is selected to be greater than 8 mm. In a particularly preferred design, the distance L1 from the narrowest position of the tulip contact 3 to the stagnation point 12 is selected to be greater than 10 mm. Furthermore, in a preferred design, the distance L1 from the narrowest position of the tulip contact to the stagnation point 12 is selected to be less than 18 mm. In a particularly preferred design, the distance L1 from the narrowest position of the tulip contact to the stagnation point 12 is selected to be less than 16mm, in particular the distance L1 from the narrowest position of the tulip contact to the stagnation point 12 is selected to be in the range from 12 mm to 16 mm.
The gas flow through the tulip channel, which is prevented by the end closure of the tulip channel 13, ensures that the mach 1 plane (with arc load) can be positioned only in the region of the narrowest position of the tulip contact 3, but not, for example, in the region of the narrowest position of the auxiliary nozzle 6. As already stated above, the axial position of the stagnation point 12 is located in the axial region between the two boundary lines f and g that characterize the width of the first channel section 10 a.
The selected short distance L1 between the stagnation point 12 and the narrowest position of the first contact element allows a sharp increase of the pressure distribution described above, which is almost independent of the shape of the auxiliary nozzle 6. Therefore, even in the case of the worn auxiliary nozzle 6, the pressure distribution hardly changes. Furthermore, the selected short distance L1 (which lies in the range between 5mm and 20 mm) results in an improved current breaking capability of the high-voltage circuit breaker 1.
To improve the current breaking capability of the high voltage circuit breaker, it would not be absolutely necessary to completely close the tulip-type channel at the end. In principle, a sharp narrowing of the tulip channel at this location will be sufficient to achieve an improvement of the current breaking capability. However, since the pressure build up is maximum when the tulip channel is completely closed at the end, it is preferable that the tulip channel is completely closed at the closed position. If a gas flow occurs in the tulip channel, the axial position of the Mach 1 plane will vary depending on the wear of the auxiliary nozzle and the pressure distribution will vary. However, this is not desirable because the current breaking capability of the high voltage circuit breaker should be independent of the wear of the auxiliary nozzle. Thus, in the present invention, not only a short acceleration length L1 is chosen, but also the end closure of the tulip channel is ensured, wherein the acceleration length L1 lies in the range between 5mm and 20 mm.
According to an advantageous design, a network interface is provided for the purpose of connecting the innovative high-voltage circuit breaker 1 to a data network. The high voltage circuit breaker may be connected to the data network via a network interface to execute commands received from the data network and/or to transmit information to the data network. For example, in this way, on and off commands may be transmitted to the high voltage circuit breaker and/or status information may be transmitted from the high voltage circuit breaker 1 to the data network.
Claims (17)
1. A high voltage circuit breaker (1) having:
two opposite contact elements (3, 4) which are movable relative to each other along a central axis (2) of the high-voltage circuit breaker,
An arc zone (5) arranged between two of said contact elements,
An auxiliary nozzle (6) at least partially surrounding one of the contact elements,
A main nozzle (7) at least partially surrounding the auxiliary nozzle,
-A channel (10) connecting the arc zone to a blowing space (8) and having a first channel section (10 a), wherein the first channel section (10 a) opens into the arc zone (5) and forms a stagnation point (12) in an outlet area, and
A further channel (13) extending between the auxiliary nozzle (6) and a first (3) of the two contact elements,
Wherein the further channel (13) extending between the auxiliary nozzle (6) and the first contact element (3) of the two contact elements is closed at the end, and
A distance (L1) between the stagnation point (12) and the narrowest position of the first contact element (3), measured in the direction of the central axis (2), lies in a range between 5mm and 20 mm.
2. High-voltage circuit breaker (1) according to claim 1, characterized in that the first contact element is a tulip-type contact (3) and the second contact element is a pin-type contact (4), and wherein the further channel (13) is a tulip-type channel.
3. High voltage circuit breaker (1) according to claim 2, characterized in that the tulip channel (13) is closed at an end closing position (13 a) and adjoins tulip fingers in its other end region, a tulip slot being provided between the tulip fingers.
4. A high-voltage circuit breaker (1) according to claim 3, characterized in that the tulip slot is in each case smaller than or equal to 1mm.
5. A high-voltage circuit breaker (1) according to claim 3, characterized in that the tulip slot is in each case smaller than or equal to 0.8mm.
6. A high-voltage circuit breaker (1) according to claim 3, characterized in that the tulip slot is in each case smaller than or equal to 0.6mm.
7. High voltage circuit breaker (1) according to one of the preceding claims, characterized in that in the case of supersonic flow a mach 1 plane is formed in the region of the narrowest position of the first contact element (3).
8. High voltage circuit breaker (1) according to claim 7, characterized in that in the case of supersonic flow a mach 1 plane is formed in the narrowest-lying cross-sectional area.
9. High voltage circuit breaker (1) according to claim 1, characterized in that the distance (L1) between the stagnation point (12) and the narrowest position of the first contact element is greater than 8mm.
10. High voltage circuit breaker (1) according to claim 1, characterized in that the distance (L1) between the stagnation point (12) and the narrowest position of the first contact element is greater than 10mm.
11. High voltage circuit breaker (1) according to claim 1, characterized in that the distance (L1) between the stagnation point (12) and the narrowest position of the first contact element is less than 18mm.
12. High voltage circuit breaker (1) according to claim 1, characterized in that the distance (L1) between the stagnation point (12) and the narrowest position of the first contact element is less than 16mm.
13. The high-voltage circuit breaker (1) according to claim 1, characterized in that the channel (10) connecting the arc zone (5) to the blowing space (8) is of an angled design and has the first channel section (10 a) and a second channel section (10 b), wherein the first channel section (10 a) extends at right angles or substantially at right angles with respect to the central axis (2) and the second channel section (10 b) opens into the blowing space (8) and extends parallel or substantially parallel to the central axis (2) between the auxiliary nozzle (6) and the main nozzle (7).
14. The high-voltage circuit breaker (1) according to claim 1, characterized in that the stagnation point (12) is present at an axial position on the central axis (2) of the high-voltage circuit breaker (1) between an end region (7 b) of the main nozzle (7) defining the first channel section (10 a) and an end region (6 b) of the auxiliary nozzle (6) defining the first channel section (10 a) on the other side of the first channel section (10 a).
15. High voltage circuit breaker (1) according to claim 1, characterized in that the distance (L1) on the central axis (2) between the stagnation point (12) and the narrowest position of the first contact element (3) is measured.
16. The high voltage circuit breaker (1) of claim 15, wherein the first contact element (3) encloses a space and has a smallest cross-sectional area through the space at right angles to the central axis (2), wherein an intersection of the smallest cross-sectional area with the central axis (2) defines the narrowest position of the first contact element (3).
17. The high voltage circuit breaker (1) according to claim 1, characterized in that the blowing space (8) is a heating space (8), or a blowing piston space (8), or a combined heating space (8) and blowing piston space (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18175210.6A EP3576125B1 (en) | 2018-05-30 | 2018-05-30 | High voltage circuit breaker |
| EP18175210.6 | 2018-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110556262A CN110556262A (en) | 2019-12-10 |
| CN110556262B true CN110556262B (en) | 2024-07-02 |
Family
ID=62492521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910456332.3A Active CN110556262B (en) | 2018-05-30 | 2019-05-29 | High-voltage circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3576125B1 (en) |
| CN (1) | CN110556262B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390179A (en) * | 2006-02-28 | 2009-03-18 | Abb研究有限公司 | Arcing chamber of a high voltage circuit breaker with a heating volume receiving the arc extinguishing gases generated by the arc |
| DE102009009450A1 (en) * | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Switchgear arrangement |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19512652C1 (en) * | 1995-04-05 | 1996-10-31 | Aeg Energietechnik Gmbh | Pressurised-gas power switch |
| DE502007006438D1 (en) * | 2007-10-16 | 2011-03-17 | Abb Research Ltd | A RELIEF CHANNEL CONTROLLED BY AN OVERFLOW VALVE |
| WO2009124582A1 (en) * | 2008-04-07 | 2009-10-15 | Abb Research Ltd | Gas-insulated high voltage switch |
| WO2015028264A2 (en) * | 2013-08-28 | 2015-03-05 | Abb Technology Ag | Gas-insulated high-voltage switchgear |
-
2018
- 2018-05-30 EP EP18175210.6A patent/EP3576125B1/en active Active
-
2019
- 2019-05-29 CN CN201910456332.3A patent/CN110556262B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390179A (en) * | 2006-02-28 | 2009-03-18 | Abb研究有限公司 | Arcing chamber of a high voltage circuit breaker with a heating volume receiving the arc extinguishing gases generated by the arc |
| DE102009009450A1 (en) * | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Switchgear arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3576125B1 (en) | 2021-02-17 |
| EP3576125A1 (en) | 2019-12-04 |
| CN110556262A (en) | 2019-12-10 |
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