EP2467863A1 - Switchgear - Google Patents
SwitchgearInfo
- Publication number
- EP2467863A1 EP2467863A1 EP09782030A EP09782030A EP2467863A1 EP 2467863 A1 EP2467863 A1 EP 2467863A1 EP 09782030 A EP09782030 A EP 09782030A EP 09782030 A EP09782030 A EP 09782030A EP 2467863 A1 EP2467863 A1 EP 2467863A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive shaft
- switching device
- switch
- rotation
- power
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- 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
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/125—Load break switches comprising a separate circuit breaker
-
- 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
- H01H33/42—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
-
- 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
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Definitions
- the invention relates to a switching device which has at least one power or load switch, a grounding switch and a disconnecting switch.
- Such switching devices are well known and are also referred to as switchgear. It can be switched on and off with the power or load switch large currents.
- the circuit breaker is used to open and close circuits in almost de-energized state and the earthing switch is used to ground previously disconnected (unlocked)
- Such switching devices can be realized as air-insulated switchgear or as gas-insulated switchgear.
- the invention has for its object to provide a switching device, which can be produced inexpensively.
- This object is achieved by a switching device according to independent claim 1.
- Advantageous developments of this switching device are the subject of the dependent claims.
- the object is achieved by a switching device having at least one power or load switch, a grounding switch and a circuit breaker, wherein the earthing switch with a first straight Antriebswel- Ie is coupled and the circuit breaker is coupled to a second straight drive shaft.
- the earthing switch is coupled to a first exclusively straight drive shaft and the circuit breaker is coupled to a second exclusively straight drive shaft.
- the earthing switch is driven by a first exclusively straight drive shaft, while the disconnector is driven by a second exclusively straight drive shaft.
- the coupling of the earthing switch or the disconnector, each with a single exclusively straight drive shaft allows a simple construction of the switching device, as for the grounding switch or the disconnector no complex deflection or gear for connecting a plurality of drive shafts, which are aligned in different directions to be needed.
- Such a simply constructed switching device can be realized inexpensively.
- the switching device can be designed so that the first drive shaft and the second drive shaft are independently rotatable.
- the switching device can also be designed such that the first drive shaft and the second drive shaft extend parallel to one another.
- a parallel to the second drive shaft extending first drive shaft advantageously leads to a particularly simple construction of the switching device, in which in particular the required space is low.
- the switching device may be realized such that the power or load switch is disposed between the first drive shaft and the second drive shaft. This also allows a simple structure, since the power or load Switch (which is usually a large and heavy component) is arranged centrally between the first drive shaft and the second drive shaft, which is a favorable
- the switching device can also be designed so that the power or load switch is coupled to a third straight drive shaft.
- the power and the load switch is coupled to a third exclusively straight drive shaft or in other words: the power or the load switch is driven by a third exclusively straight drive shaft.
- This also contributes to the simple design of the switching device, since an exclusively straight drive shaft - compared to drive means which have multiple, arranged in different directions drive shafts - can be easily and therefore also realized inexpensively.
- the third drive shaft may extend parallel to the first drive shaft and / or parallel to the second drive shaft.
- the parallel alignment of the third drive shaft to the first and / or second drive shaft also leads to a very simple construction of the switching device, since the parallel drive shafts do not interfere or hinder each other.
- the switching device can be configured such that the first drive shaft is coupled to the grounding switch via a crank mechanism and / or the second drive shaft is coupled to the circuit breaker via a power take-off.
- the use of a cranking operation for coupling the first drive shaft to the earthing switch and / or the second drive shaft to the disconnecting switch is particularly advantageous because, for NEN such a crank mechanism can be easily realized, on the other hand in such a crank mechanism already with a rotation of the drive shaft is provided by only 180 degrees, the full stroke for the operation of the earthing switch and / or disconnector. Thus, a rotation of the respective shaft is already sufficient by 180 degrees in order to turn the earthing switch and / or the disconnecting switch completely on or off.
- the switching device may further be configured such that it has a locking device which blocks rotation of the second drive shaft in a first locking position, which blocks rotation of the first drive shaft in a second locking position and which in a third locking position rotation of the first drive shaft and a Rotation of the second drive shaft blocked.
- a locking device which blocks rotation of the second drive shaft in a first locking position, which blocks rotation of the first drive shaft in a second locking position and which in a third locking position rotation of the first drive shaft and a Rotation of the second drive shaft blocked.
- the locking device By arranging the locking device at one end of each of the first, second and third drive shaft, the locking device can advantageously be realized simply because the locking device only has to prevent the unintentional rotation of the drive shafts. In addition, without major structural changes of the entire switching device, this locking device can be replaced by a differently constructed locking device, if desired. This results in a modular construction of the switching device, can be easily and inexpensively a variety of variants of the switching device can be realized.
- the switching device may also have a display device (switching position indicator) which indicates the position of the first drive shaft and / or the second drive shaft.
- the switching device can be realized so that the display device is arranged at each end of the first drive shaft and the second drive shaft.
- the arrangement of the display device at each end of the first drive shaft and the second drive shaft results - similar to the locking device - a building block-like structure of the switching device, because the display device easily and without significant structural changes ments of the rest of the switching device can be replaced by another display device.
- the switching device can also be designed such that the earthing switch is arranged on one side of the power or load switch and the disconnecting switch is arranged on the opposite side of the power or load switch.
- Such an arrangement is particularly advantageous because the length of the current-carrying paths within the switching device is minimized by the symmetrical arrangement of the earthing switch on one side of the power or load switch and the disconnector on the opposite side of the power or load switch.
- Figure 1 is a schematic circuit diagram of a switching device, in
- Figure 2 shows a three-dimensional view of the switching device in the partially disassembled state
- Figure 3 is a side view of the switching device, in
- Figure 4 is a second side view of the switching device and in
- FIG. 1 shows an overview diagram of an embodiment of a switching device 100 is shown schematically, wherein the circuit diagram represents only one phase of the three-phase switching device.
- a bus 101 illustrated which electrical current leads to the switching device.
- the electrical current is passed through a symbolically represented as a rectangle implementation 103 of a busbar portion of the switching device to a switching range of the switching device and passes to a circuit breaker 105.
- the circuit breaker 105 connects the busbar 101 with a contact of a circuit breaker 107, wherein the circuit breaker Embodiment is realized as a vacuum interrupter.
- the other contact of the power switch 107 is connected via a further passage 109 with a cable 111, which is located in the cable portion of the switching device.
- the contact of the circuit breaker 107 connected to the circuit breaker 105 is further connected to a grounding switch 113.
- the earthing switch 113 serves to ground the contact of the circuit breaker connected to this disconnecting switch 105 when the disconnecting switch 105 is open.
- the busbar 101 is located in the busbar area of the switching device, which is designed as a busbar module.
- This busbar module is connected via the feedthrough 103 to the switching region of the switching device.
- This switching portion is configured as a power switch module in which the power switch 107, the disconnect switch 105, and the ground switch 113 are located.
- This power switch module is connected via the feedthrough 109 to a cable module housing the cable connections and cables 111.
- the busbars, switches or cables for all three phases of the electrical current are located in the exemplary embodiment.
- FIG. 2 shows a part of the switching device 100 in a partially disassembled state in a three-dimensional view. posed.
- the current path shown in Figure 1 can be seen, which from one shown in the upper part of Figure 2 terminal 201 for the busbar 101 via the feedthrough 103, the circuit breaker 105, the power switch 107, the implementation 109 to one in the lower part of the
- Figure 2 shown cable connection 203 out.
- Figure 2 shows essentially the switch room, the housing is not shown and some parts have been omitted for the sake of clarity.
- the switching device comprises three phases L1, L2 and L3, which are of essentially the same design. The easiest way to recognize the structure at phase Ll, since at this stage Ll support parts are not shown.
- the switching device 100 has a first, exclusively straight
- Switching device a third exclusively straight drive shaft
- the first drive shaft 205 is used exclusively for driving the earthing switch 113, the second drive shaft 207 exclusively for driving the disconnecting switch 105, and the third drive shaft 209 exclusively for driving the power switch 107.
- the first drive shaft 205, the second drive shaft 207 and the third drive shaft 209 are each independently rotatable and parallel to each other.
- the power switch 107 is disposed between the first drive shaft 205 and the second drive shaft 207.
- the first drive shaft 205 is connected to the ground via a crank mechanism.
- Switch 113 coupled. This crank mechanism is better seen in Figures 3 and 5.
- the second drive shaft is coupled via a crank mechanism 211 to the disconnect switch 105.
- the earthing switch 113 is disposed on one side of the power switch 107 and the disconnecting switch 105 on the other side of the power switch 107.
- the circuit breaker 105 has a fixed sleeve-shaped isolator contact 213, a disconnect pin 215 and a disconnect pin guide 217.
- the separating bolt 215 is axially longitudinally movable. In the illustrated state, it touches the stationary isolator contact 213, thus the isolating switch 105 is closed in the illustrated state.
- the circuit breaker 105 is driven via a rigid insulator 219 of a coupling rod 211 of the crank mechanism, wherein the insulator 219 and the coupling rod 211 are integrally formed.
- the crank gear is connected to the second, exclusively straight drive shaft 207, which drives or operates the disconnect switch 105.
- One end of the second drive shaft 207 is connected to a locking device 230, with the u. a. the second drive shaft 207 locks, d. H. can be blocked.
- the locking device 230 has three locking positions: In a first locking position, rotation of the first drive shaft 205 is enabled, whereas rotation of the second drive shaft 207 is blocked. In the second locking position, rotation of the second drive shaft 207 is enabled with rotation of the first drive shaft 205 blocked. In the third Locking position, a rotation of the first drive shaft 205 and the second drive shaft 207 are blocked.
- the locking device 230 is arranged in each case at one end of the first, second and third drive shaft.
- the locking device 230 comprises an actuating slide 234, which is located in the position shown in Figure 2 in a middle sliding position, which is the third locking position associated.
- the locking device 230 may also be designed so that it blocks a rotation of the second drive shaft 207 and a rotation of the third drive shaft 209 in a first locking position and allows rotation of the first drive shaft 205, in a second locking position rotation of the first drive shaft 205 and blocks rotation of the third drive shaft 209 and allows rotation of the second drive shaft 207 and, in a third lock position, blocks rotation of the first drive shaft 205 and rotation of the second drive shaft 207 and allows rotation of the third drive shaft 209.
- a display device 238 (switching position display) is realized, which indicates the respective current position of the first, second and third drive shaft and thus the current position of the earthing switch, the circuit breaker and the circuit breaker.
- This display device has display areas 238, which are openings in a cover plate, behind which, depending on the rotational position of the first drive shaft 205 and the second drive shaft 207 different colored display elements are visible.
- the electrical current is on the implementation 103, the circuit breaker 105 and flexible power strips 250 to the
- Circuit breaker 107 passed.
- the circuit breaker 107 is a vacuum interrupter 107 known as such.
- This vacuum interrupter 107 has a fixed contact which is electrically connected to the cable terminal 203 via the leadthrough 109.
- the moving contact of the vacuum interrupter 107 is electrically connected to the current band 250 and is moved mechanically via a designed as an isolator pull / push rod 252 in the axial direction of the vacuum interrupter.
- a device for stroke adjustment 254 is arranged between moving contact of the vacuum interrupter 107 and the push / pull rod 252, a device for stroke adjustment 254 is arranged.
- the pull / push rod 252 is actuated by means of a rocker arm 256 attached to the third drive shaft 209.
- the third drive shaft 209 is driven by means of a drive 258, which is a magnetic drive in the exemplary embodiment.
- the drive 258 could also be configured differently, for example as a spring-loaded drive.
- the drive 258 moves by means of another rocker arm 260, the third drive shaft 209 by only a few degrees of rotational movement. This rotational movement is sufficient to close or open the circuit breaker 107.
- the moving contact of the power switch 107 is further electrically connected via the current band 250 to an earthing contact 262 of the earthing switch 113.
- the grounding switch 113 further has a grounding ruler 264, which is guided vertically displaceably in a guide 266.
- the grounding ruler 264 is electrically connected to ground potential.
- the Erderlineal 264 does not touch the earthing contact 262, thus, in the illustrated state, the grounding switch 113 is opened.
- the Erderlineal 264 is a shorting bridge that connects the earth contacts 262 of all three phases Ll, L2 and L3 together and to ground potential in the on state of the earthing switch.
- FIG. 3 shows a side view of the switching device 100 looking in the direction of the earthing switch 113.
- the Erderlineal 264 is mounted in the guides 266 slidingly movable and is driven by a coupling rod 300 of a crank gear from the first drive shaft 205.
- the Erderlineal 264 is thereby pushed by two simultaneously moving coupling rods 300 of two crank gear up or down.
- the Erderlineal 264 comes into electrical contact with the 3 ErderWalleten 262 of the three phases Ll, L2 and L3.
- Earth electrode 264 then connects earth contacts 262 of all three phases L1, L2 and L3 to each other and to ground potential ,
- the first drive shaft 205 is driven by means of a crank, which can be plugged into the right end of the first drive shaft 205 (not shown in FIG. 3). In other embodiments, however, the first drive shaft 205 can also be driven by means of other drives, for example by means of a motor drive. The same also applies to the second drive shaft 207, which is hidden in FIG. 3 by the first drive shaft 205.
- FIG. 4 shows a sectional view through the switching device 100 along the sectional plane VV of FIG. 3.
- the first crank gear can be seen well on the right side, which connects the second drive shaft 207 to the linear sliding-guided separating bolt 215 by means of the coupling rod 211.
- On the left side of the second crank mechanism can be seen, which connects by means of the coupling rod 300, the first drive shaft 205 with the linear sliding-guided Erderlineal 264.
- the earth contact 262 must also be know, in which the grounding ruler 264 retracts when closing the grounding switch 113.
- the grounding switch is coupled to a first straight drive shaft and the disconnector is coupled to a second straight drive shaft.
- the power switch can be arranged between the first drive shaft and the second drive shaft, the two drive shafts can be aligned parallel to one another.
- the circuit breaker may be coupled to a third straight drive shaft which may be parallel to the first drive shaft and the second drive shaft.
- a locking device can moreover be attached to the ends of these two shafts in a particularly simple manner, whereby the first drive shaft, the second drive shaft or also the third drive shaft can be blocked with this locking device.
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2009/060772 WO2011020509A1 (en) | 2009-08-20 | 2009-08-20 | Switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2467863A1 true EP2467863A1 (en) | 2012-06-27 |
EP2467863B1 EP2467863B1 (en) | 2014-06-04 |
Family
ID=42110034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09782030.2A Not-in-force EP2467863B1 (en) | 2009-08-20 | 2009-08-20 | Switchgear |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2467863B1 (en) |
CN (1) | CN102484012A (en) |
WO (1) | WO2011020509A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103426677A (en) * | 2013-08-06 | 2013-12-04 | 国家电网公司 | Novel three-position driving device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011085995A1 (en) * | 2011-11-09 | 2013-05-16 | Siemens Aktiengesellschaft | Drive module for a multi-pole circuit breaker |
US8729985B2 (en) * | 2012-01-23 | 2014-05-20 | Electro-Mechanical Corporation | Switchgear visible disconnect mechanical interlock |
US9070517B2 (en) | 2012-08-13 | 2015-06-30 | Electro-Mechanical Corporation | Vacuum interrupter and linear disconnect switch |
CN102938344A (en) * | 2012-12-09 | 2013-02-20 | 安徽省电力公司蚌埠供电公司 | Disconnector misoperation prevention device |
CN104036991B (en) * | 2013-12-07 | 2016-08-17 | 国家电网公司 | There is the tri-station isolating switch powder operation device of anti-misoperation function |
CN104485248B (en) * | 2014-12-31 | 2017-05-10 | 嘉兴赛铁龙电气有限公司 | Earthing switch |
EP3251138B8 (en) * | 2015-01-28 | 2020-03-04 | ABB Power Grids Switzerland AG | Mechanical interlock assembly for disconnector and earthing switch |
CN104600577B (en) * | 2015-02-10 | 2017-01-25 | 胡俊兵 | Intelligent grounding knife switch of high-voltage switch cabinet |
CN106683915A (en) * | 2017-02-15 | 2017-05-17 | 益和电气集团股份有限公司 | Insulation spindle and load switch |
CN108037369A (en) * | 2018-01-17 | 2018-05-15 | 佛山市川东磁电股份有限公司 | A kind of TDS detectors and its packaging technology |
CN108630474A (en) * | 2018-07-02 | 2018-10-09 | 河南华盛隆源电气有限公司 | The interlocking mechanism of breaker and disconnecting switch |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2773001B1 (en) * | 1997-12-19 | 2000-01-21 | Schneider Electric Sa | MEDIUM VOLTAGE CELL WITH GAS INSULATION AND HIGH DIELECTRIC HOLD |
DE102004015386B4 (en) * | 2003-03-26 | 2008-10-30 | Abb Technology Ag | Mechanical control for a three-position switch |
US7902480B2 (en) * | 2007-06-13 | 2011-03-08 | Hitachi, Ltd. | Vacuum insulated switchgear |
JP5070178B2 (en) * | 2008-10-14 | 2012-11-07 | 株式会社日立製作所 | Switchgear |
-
2009
- 2009-08-20 WO PCT/EP2009/060772 patent/WO2011020509A1/en active Application Filing
- 2009-08-20 EP EP09782030.2A patent/EP2467863B1/en not_active Not-in-force
- 2009-08-20 CN CN2009801610187A patent/CN102484012A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2011020509A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103426677A (en) * | 2013-08-06 | 2013-12-04 | 国家电网公司 | Novel three-position driving device |
CN103426677B (en) * | 2013-08-06 | 2016-06-22 | 国家电网公司 | A kind of three position transmission devices |
Also Published As
Publication number | Publication date |
---|---|
WO2011020509A1 (en) | 2011-02-24 |
EP2467863B1 (en) | 2014-06-04 |
CN102484012A (en) | 2012-05-30 |
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