EP3084794A1 - Switchgear - Google Patents
SwitchgearInfo
- Publication number
- EP3084794A1 EP3084794A1 EP14820845.7A EP14820845A EP3084794A1 EP 3084794 A1 EP3084794 A1 EP 3084794A1 EP 14820845 A EP14820845 A EP 14820845A EP 3084794 A1 EP3084794 A1 EP 3084794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- switching device
- contacts
- contact
- contact plates
- 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
- 238000000926 separation method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000037361 pathway Effects 0.000 abstract 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 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
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
-
- 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
-
- 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
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
Definitions
- the invention relates to a switching device according to the preamble of claim 1.
- the object of the invention is therefore to provide a switching device of the type mentioned, with which the mentioned disadvantages can be avoided, with which high
- DC currents can be switched off safely, and which has a small size.
- FIG. 1 shows a schematic representation of a first preferred embodiment of an exemplary switching device in a first state
- FIG. 2 shows a schematic representation of the switching device according to FIG. 1 in a second state
- FIG. 3 shows a schematic illustration of the switching device according to FIG. 1 in a third state
- FIG. 4 is a schematic representation of a second preferred embodiment of a subject switching device in a first state
- FIG. 5 shows a schematic representation of the switching device according to FIG. 4 in a second state
- Fig. 6 is a schematic representation of the switching device of FIG. 5 in a third state.
- 1 to 6 each show schematic representations of preferred embodiments of a switching device 1, wherein the switching device 1 has first switching contacts 2, which in a closed state part of a first current path 3 from a first terminal 4 of the switching device 1 to a second terminal 5 of the switching device 1, wherein the switching device 1 has a switching mechanism 6, which is designed, after actuation by a trigger 7, in a first step to separate the first switching contacts 2, wherein
- a second current path 8 is arranged, wherein the second current path 8 has a predetermined plurality of serially arranged second switching contacts 9, and wherein the switching mechanism 6 is formed in a - the first step - confidenten second step, the second switching contacts 9 each separate from each other.
- DC plants are increased, and improved protection of people and equipment against harmful effects of electric current can be achieved.
- the total load of the electrical systems can also be reduced in the event of a short circuit, since a reduction in the maximum flowing short-circuit current takes place.
- the switching device 1 can be any type of electrical switching device 1, therefore a device for switching electrical currents, trade. It is preferably provided that the switching device 1 is a DC switching device, therefore, a switching device 1, which is provided in particular for switching DC, especially for switching the prevailing for photovoltaic systems voltages of 600 V DC.
- the switching device 1 preferably has a handle, not shown, for opening and closing the first and second switching contacts 2, 9.
- the switching device 1 is designed as a protective switching device, Therefore, as a switching device 1, which causes the occurrence of certain electrical states automatically opening the switching contacts 2, 9, and accordingly has a so-called.
- the trigger 7 is designed as a short-circuit release, with an overcurrent release can be provided.
- Such triggers 7 are well known in the field in question, the trigger is shown in FIGS. 1 to 6 only schematically as a common unit with the rear derailleur 6, which of course structurally separate conversions can also be provided.
- the switching device 1 has an insulating material housing, on which the Terminals 4, 5 are arranged.
- the switching device 1 has first switching contacts 2, which in a closed state are part of a first current path 3 from the first
- Terminal 4 of the switching device 1 to the second terminal 5 of the switching device 1 are. Closed state means that the contact elements of the first
- Switching contacts 2 are in Appendix, therefore form a conductive connection, which is formed by contact of two solids.
- the first switching contacts 2 are each formed in the subject FIGS. 1 to 6 as a pairing of a movable contact element and a housing-fixed contact element. It can also be provided to connect two housing-fixed contact elements by a movable switching bridge, and to form such a so-called. Double interruption.
- the switching device 1 has a mechanical switching mechanism 6, which preferably as
- Switch lock is formed. At least one contact element of the first switching contacts 2 is connected to the rear derailleur 6 or controlled by the switching mechanism 6 or actuated. It is provided that the switching mechanism 6 is formed, after actuation by the trigger 7, to separate the first switching contacts 2 in a first step. It is of course provided that the first switching contacts 2 were previously closed. 1 and 4 show an objective switching device in a first state closed first and second switching contacts 2, 9. It can also be provided that the
- Rear derailleur 6 is designed to act in such a way even with manual shutdown.
- a second current path 8 is arranged parallel to the first switching contacts 2.
- the second current path 8 preferably branches off from the first current path 3 only in the region of the first switching contacts 2.
- a predeterminable plurality of serially arranged second switching contacts 9 are arranged.
- the second switching contacts 9 comprise at least one housing-fixed first
- the second switching contacts 9 are in contact and form a conductive connection within the second current path 8.
- the second current path 8 has a higher resistance, in particular a at least 10 times, preferably at least 100 times higher resistance, than the circuitry parallel to this running portion of the first current path 3, comprising the first switching contacts 2. This can be achieved that in
- the contact plates 12 have a ferromagnetic material, in particular steel. Due to the higher specific resistance
- the preferred embodiment of the contact plates 12 comprising steel also has the advantage of high robustness and thermal
- the switching mechanism 6 is further configured to separate the plurality of second switching contacts 9 from one another in a second step, the first step, following. 1 and 4 each show a switching device in the first state closed first two second switching contacts 2, 9. After actuation of the switching mechanism 6 by the trigger 7 only the first switching contacts 2 are separated. Since there is still a conductive connection via the second current 8, in this state, the entire current flow shifts to the second current path 8. Due to the considerably higher resistance of the second current path 8 with respect to the first current path 3 can already over the
- Switching device 1 flowing current can be reduced.
- the second state in question is in the fog. 2 and 5, respectively.
- the switching mechanism 6 separates the second switching contacts 9 or causes this separation of the second switching contacts 9. Since now no further line-connected connection within the switching device 1, there is the formation of arcs between adjacent contact plates 12. Im
- Arc voltage requires a longer time, since the resulting arc of the switch contacts in the usual in such conventional switchgear must extinguishing stacks and is divided there in partial arcs, in the subject switching device 1, the contact plates 12 are opened substantially simultaneously, whereby when switching off the switching device 1 or at contact opening quickly high
- Arc voltage is reached, which counteracts a driving source voltage and thus limits the current through the switching device 1 faster than conventional switching devices.
- the arc voltage is thereby the sum of the voltages of the Partial arcs.
- the individual arcs are effectively cooled by the plurality of contact plates 12.
- the relevant switching device 1 can be adapted in the design to the intended threshold voltage.
- the contact plates 12 can be made different in terms of their concrete training, such as a circular or rectangular plate. It can be provided that these are designed as composite bodies comprising a plurality of materials. In addition, it can be provided that the contact plates 12 have projecting contact area, which are provided to contact the respectively adjacent contact plate 12.
- the switching mechanism 6 has a first actuating element 10 for the at least indirect separation of the first switching contacts 2, and that the switching mechanism 6 has a second actuating element 11 for at least indirect separation of the second switching contacts 9.
- the first as second actuating element 10, 11 are symbolized in FIGS. 1 to 6 only by lines.
- Rear derailleur 6 is heavily dependent on the other requirements for the relevant switching device 1 and is not further explained representational.
- FIG. 1 to 3 show a first preferred embodiment of a subject switching device 1, wherein the contact plates 12 are each mounted rotatably movable.
- the individual contact plates 12 are arranged rotatably mounted in a central region in the switching device 1.
- the contact plates 12 are connected to each other by means of an actuating rod 20, which actuating rod 20 is at least indirectly in operative connection with the rear derailleur 6.
- the actuating rod 20 is preferably spaced apart from the central region at the individual contact plates 12 rotatably mounted in order to achieve a good leverage.
- the contact plates 12 are each together and form an electrically conductive connection, which forms part of the second current path 8, as shown in Figs. 1 and 2.
- the contact plates 12 are each arranged substantially equally spaced from each other, as shown in Fig. 3. 4 to 6 show a second preferred embodiment of a subject switching device 1, wherein the contact plates 12 are mounted to be longitudinally displaceable movable.
- longitudinally displaceable means in particular that the displacement takes place along a straight line, therefore as a translatory movement. It is preferably provided that the displacement direction substantially normal to a flat extent of
- FIGS. 1 and 2 respectively show the second switching contacts 9 in the closed position.
- At least one spring 17 is arranged between the individual contact plates 12, which are under bias in the closed position of the second switching contacts 9.
- the springs 17 are preferably formed as helical springs, by the central
- a guide rod 22 is guided, which also passes through the contact plates 12.
- the contact plates 12 are preferably held by a locking device 18 of the mechanism 6 in the closed position shown in FIG. 1 to 2, against the
- the switching mechanism 6 is designed such that in the second step, the locking device 18 is actuated or unlocked, resulting in the sudden opening of the second switching contacts 9.
- another preferred device of the relevant switching device 1 which brings the contact plates 12 together again in the, in particular manual, closing the switch contacts 2, 9 of the switching device 1, thereby applying the bias of the springs 17, and the locking device 18 in the corresponding position brings.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013114402.0A DE102013114402A1 (en) | 2013-12-18 | 2013-12-18 | switchgear |
PCT/EP2014/078542 WO2015091844A1 (en) | 2013-12-18 | 2014-12-18 | Switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3084794A1 true EP3084794A1 (en) | 2016-10-26 |
EP3084794B1 EP3084794B1 (en) | 2018-09-19 |
Family
ID=52232182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14820845.7A Active EP3084794B1 (en) | 2013-12-18 | 2014-12-18 | Schaltgeraet |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3084794B1 (en) |
DE (1) | DE102013114402A1 (en) |
WO (1) | WO2015091844A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017206746A1 (en) * | 2017-04-21 | 2018-10-25 | Siemens Aktiengesellschaft | Arrangement and method for parallel switching of high currents in high voltage engineering |
EP3410454A1 (en) | 2017-05-31 | 2018-12-05 | ABB Schweiz AG | Electrical dc switching system |
GB2593932A (en) | 2020-04-10 | 2021-10-13 | Eaton Intelligent Power Ltd | Commutating electric circuit breaker with reliable actuating mechanism and operation method thereto |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL23313C (en) * | 1927-03-30 | |||
US3236981A (en) * | 1963-11-21 | 1966-02-22 | Barkelew Electric Mfg Company | By-pass switch with pivoted contacts and arc prevention apparatus |
US3415964A (en) * | 1965-10-22 | 1968-12-10 | Square D Co | Electrical switch |
FR2778788B1 (en) * | 1998-05-12 | 2000-07-13 | Schneider Electric Ind Sa | CIRCUIT BREAKER OF WHICH AT LEAST ONE PHASE IS CONSISTING OF SEVERAL POLAR COMPARTMENTS CONNECTED IN PARALLEL |
-
2013
- 2013-12-18 DE DE102013114402.0A patent/DE102013114402A1/en not_active Ceased
-
2014
- 2014-12-18 EP EP14820845.7A patent/EP3084794B1/en active Active
- 2014-12-18 WO PCT/EP2014/078542 patent/WO2015091844A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102013114402A1 (en) | 2015-06-18 |
WO2015091844A1 (en) | 2015-06-25 |
EP3084794B1 (en) | 2018-09-19 |
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