CN104813428A - Dc voltage switching device - Google Patents
Dc voltage switching device Download PDFInfo
- Publication number
- CN104813428A CN104813428A CN201380057091.6A CN201380057091A CN104813428A CN 104813428 A CN104813428 A CN 104813428A CN 201380057091 A CN201380057091 A CN 201380057091A CN 104813428 A CN104813428 A CN 104813428A
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- extinguishing board
- direct current
- control device
- 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
- 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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
-
- 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
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
- H01H73/045—Bridging contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a DC voltage switching device (1) comprising at least one electric input (2), at least one electric output (3), at least one first switch contact (4), and a movable switching bridge (20). The DC voltage switching device (1) further has an arc extinguishing arrangement (6), said arc extinguishing arrangement (6) having at least one first arc extinguishing chamber (7) which has a plurality of extinguishing sheets (9). According to the invention, at least one first extinguishing sheet (27) of the extinguishing sheets (9) is shaped, in particular curved, such that a Lorentz force (12) acts on arcs (11) caused by a switching process in the direction of the extinguishing sheets (9) in the first arc extinguishing chamber (7).
Description
Technical field
The present invention relates to a kind of by Patent right requirement 1 direct current switch as described in the preamble.
Background technology
It is known for being used for connecting galvanic switch.But galvanic being applied in a very long time is all confined in low power range usually, goes wrong hardly in low power range when connecting direct current.
Since the battery backup system of photovoltaic and powerful in function is widely used in EDV-server, direct current and the direct voltage of connecting more high voltage and power are also needed.At this, known alternating current switch has proved inappropriate in many aspects.Such as, when connecting direct current by alternating current switch, even if voltage and current is far below the maximum alternating current-power limit of associated AC electric switch, also may cause its total loss.Except electronic equipment malfunctioning except, this also can fire hazard.
Summary of the invention
Therefore the object of the invention is, a kind of direct current switch of aforementioned type is provided, described shortcoming can be avoided by it, and can reliably connect more high-power direct current by it.
By the present invention, this point is achieved by the feature of independent claims 1.
Can create a kind of direct current switch thus, it has high making capacity in direct current, and therefore it be applicable to connecting high-power direct current.This direct current switch especially has high fail safe relative to heat interference.
Dependent claims relates to other favourable structural scheme of the present invention.
Provision for this reason with reference to Patent right requirement on expressing, therefore claim is herein by referring in insertion specification, and as word-for-word reproduced.
Accompanying drawing explanation
When describing the present invention with reference to when accompanying drawing, only schematically illustrate preferred embodiment in the drawings.Wherein:
Fig. 1 shows the especially preferred embodiment of direct current switch in the view of partly cut-away with front view;
Fig. 2 has illustrated the arc-control device for the direct current switch by Fig. 1 in axis side view;
Fig. 3 shows the details of Fig. 1 in the cross-section;
Fig. 4 there is shown the first state of electric arc in another details of Fig. 1; And
Fig. 5 there is shown the second state of electric arc in another details of Fig. 1.
Embodiment
Fig. 1 to 5 shows the parts of the especially preferred embodiment of direct current switch 1 or the arc-control device 6 of this direct current switch 1, wherein direct current switch 1 has at least one electrical input 2 and at least one electric output 3, and there is at least one the first switch contact 4 and mobilizable wire jumper 20, wherein direct current switch 1 also has arc-control device 6, wherein this arc-control device 6 has at least one first arc control device 7, it comprises multiple arc extinguishing board 9, the first arc extinguishing board 27 wherein in these arc extinguishing boards 9 is shaped like this, especially so bending, namely on the electric arc 11 caused by switching process, in the first arc control device 7, Lorentz force 12 works along the direction of arc extinguishing board 9 respectively.
Can create a kind of direct current switch 1 thus, it has high making capacity in direct current, and therefore it be applicable to connecting high-power direct current.This direct current switch 1 especially has high fail safe relative to heat interference.
The present invention relates to a kind of switch, it arranges and special configuration must be used for connecting direct current.The invention particularly relates to a kind of direct current switch 1, its arranges and constructs to obtain the high pressure that is used in the scope of the operating voltage connecting a few hectovolt (such as 600V) by the numbers, and is used for connecting the electric current within the scope of double-digit ampere.
Preferred embodiment below by the direct current switch 1 with single fracture (Schaltstrecke) describes the present invention in detail.But also can specify the execution mode with multiple parallel fracture, therefore be provided with the current path that can connect.
Direct current switch 1 has electrical input 2 and electric output 3, and they are preferably configured to hoop position screw, also as shown in Figure 1 the same.In addition, direct current switch 1 also has megohmite insulant housing.
This direct current switch 1 has single fracture at it illustrate with in preferred embodiment, but also can arrange the dual disconnection of these single fractures.Preferred regulation, direct current switch 1 also has second switch contact 5 except the first switch contact 4, this second switch contact arranges fix with housing, and can be connected conductively by mobilizable wire jumper 20, thus forms the current path from the conduction of input 2 to output 3.In this regulation, the position of wire jumper 20 manually can be controlled by control lever 19.Preferred regulation, control lever 19 acts on wire jumper 20 by quick-acting mechanism (Sprungeinschaltwerk), suddenly opens and closes this fracture to reach.Also can specify, this direct current switch 1 is designed to so-called automatic switch, and it has one or more release, such as overload current release and/or short circuit release.Also preferably specify, direct current switch 1 has locking mechanism (Schaltschloss), and especially design itself becomes automatic switch.
Also can arrange the unshowned execution mode of this direct current switch 1, it only has mobilizable wire jumper 20 except the first switch contact 4, and this wire jumper is such as connected with output 3, to form the current path by direct current switch 1 by flexible wire.
When switch contact closes, electric current flows to the first switch contact 4 by shown direct current switch 1 from electrical input 2, and flows to second switch contact 5 by wire jumper 20 from the first switch contact, and continues to flow to electric output 3.Although wire jumper 20 has at this region that two are configured to electric contact, to contact with second switch contact 5 with the first switch contact 4, it is only called wire jumper 20 in the word of the application.Also can specify, the first switch contact 4 and second switch contact 5 are also configured to mobilizable electric contact.
Direct current switch 1 also has arc-control device 6, so that the electric arc produced during action switch 11.Should avoid thus, electric current is also flowed by direct current switch 1 due to so-called " holding up " electric arc 11 and damages direct current switch 1 due to the thermal effect of electric arc 11.This electric arc 11 especially occurs in disconnection process." disconnection process " herein means wire jumper 20 and is separated from the first and second electrical switching contacts 4,5, to disconnect the electric current flowing through direct current switch 1.Physical relation when electric arc 11 is lighted is described by the law of electromagnetic induction.
Fig. 2 shows the preferred implementation of arc-control device 6, and wherein direct current switch-linear hybrid has the first and second switch contacts 4,5.By Fig. 2 depending on there is shown the first switch contact 4 and second switch contact 5, but other contact is not shown, is only used to show their layouts relative to each arc control device 7,8.This is applicable to wire jumper 20 equally shown in figure 2.
Arc-control device 6 has the first arc control device 7 and the second arc control device 8 in the preferred embodiment shown.Preferably specify at this, the first arc control device 7 are subordinated to the first switch contact 7, and the second arc control device 8 are subordinated to second switch contact 5, wherein if there is no second switch contact 5, then also can arrange the execution mode only with the first arc control device 7.Concept " subordinate " refers to relevant arc control device 7,8 in this context relative to this layout of the switch contact 4,5 mentioned, the electric arc 11 namely produced on switch contact 4,5 in relevant arc control device 7,8 or on find its path.Fig. 2 shows two switch contacts in each arc control device 7,8 region.
Specify in the preferred embodiment shown, the first arc control device 7 and the second arc control device 8 are arranged abreast abreast in direct current switch 1, as in figs 2 and 3.
Multiple arc extinguishing board 9 is respectively arranged with in the first arc control device 7 and the second arc control device 8.Arc extinguishing board 9 is arranged on electric arc with preferably substantially holding up at this and advances on track 18, wherein between the arc extinguishing board 9 installed side by side, there is spacing respectively.As long as be provided with the first and second arc control device 7,8, then at least one arc extinguishing board 9 of the first arc control device 7 is connected conductively at this arc extinguishing board 9 with the second arc control device 8.
Arc extinguishing board 9 preferably by can conduct electricity and magnetic conduction, the metal that preferably comprises iron forms.Also preferably specify, arc extinguishing board 9 constructs substantially consistent with each other.Especially can specify at this, single arc extinguishing board 9 constructs larger than the overwhelming majority in these arc extinguishing boards 9.Especially be arranged on from the nearest region of the tracks of wire jumper 20 by arc extinguishing board 9 outstanding in the overall composite construction of arc extinguishing board 9.
When electric current is flowed by direct current switch 1, if wire jumper 20 is removed from the first switch contact 4 and second switch contact 5, then create the electric arc 11 from the first switch contact 4 to wire jumper 20 and another electric arc 11 from wire jumper 20 to switch contact 5.
Near the length treating by the air gap of electric arc 11 bridge joint determined, they skip to the arc extinguishing board 9 of arc control device 7,8.Shown in this, the electric arc 11 now produced has surprising stability, and these electric arcs 11 exist on relevant arc extinguishing board 9 (these electric arcs contact on this arc extinguishing board), until there is the heat interference of direct current switch 1.This problem is unknown in alternating current techniques, because the friendship zero continuing to carry out of the voltage due to applying, will soon extinguish the alternating current electric arc of appearance.
Therefore specify, the first arc extinguishing board 27 in these arc extinguishing boards 9 be shaped like this, bending especially like this, namely on the electric arc 11 caused by switching process, in the first arc control device 7, Lorentz force 12 works along the direction of arc extinguishing board 9 respectively.First arc extinguishing board 27 is the arc extinguishing board 9 constructing different from another arc extinguishing board 9 at this.Therefore, the electric arc 11 caused by switching process can be driven on the direction of arc extinguishing board 9, thus the energy of the electric arc 11 that can dissipate rapidly.
Especially can specify, the first arc extinguishing board 27 limits the border of the arc extinguishing board stacking of the arc extinguishing board 9 of the first arc control device 7.Can specify by Fig. 1,3,4 and 5, the first arc extinguishing board 27 is arranged on the end of arc extinguishing board stacking of arc extinguishing board 9.First arc extinguishing board 27 especially can be a part for the arc extinguishing board stacking of arc extinguishing board 9.Can specify in addition, the first arc extinguishing board 27 is arranged on the first end of arc extinguishing board stacking of arc extinguishing board 9, and this first end arranges adjacent with a position of wire jumper 20, if this wire jumper 20 is opened with switch contact 4,5 points, then this wire jumper takes up position.Therefore, electric arc 11 can skip the first arc extinguishing board 27 well, and wherein electric arc 11 is directly formed after described jump between switch contact 4,5 and first arc extinguishing board 27.
Especially can specify, the first arc extinguishing board 27 arranges adjoin with the tracks of wire jumper 20.Especially can specify, the first arc extinguishing board 27 in arc-control device 6, especially the first arc control device 7 and or the second arc control device 8 in be arranged in the tracks of wire jumper 20.When wire jumper 20 is opened, the position contacted with the first switch contact 4 and/or second switch contact 5 of wire jumper 20 is moved along the tracks of wire jumper 20.When opening, therefore equally first pull this electric arc 11 along the tracks of wire jumper 20.By being arranged in the tracks of wire jumper 20 by the first arc extinguishing board 27, the end of electric arc 11 can be got over to the first arc extinguishing board 27 from wire jumper 20 easily.
In addition especially can specify, the first arc extinguishing board 27 has accommodation section 30, and in accommodation section 30, arrange the contact block component 31 be made up of insulating material.This contact block component 31 is arranged especially like this at this, and namely form the block being used for wire jumper 20, therefore it can arrange directly adjoin with the first arc extinguishing board 27 in the on state.
Especially can specify, the first arc extinguishing board 27 is configured to u shape.By this u shape structure (as shown in Figure 4), Lorentz force 12 can be caused especially simply on the direction of arc extinguishing board 9.In addition, the field intensity of local can be improved by the surface in u shaped bending.This first arc extinguishing board 27 can be the first arris 28 and the second arris 29 by the Region dividing in u shaped bending at this.
In addition especially also can specify, the first arris 28 of the first arc extinguishing board 27 in u shape is connected conductively with the position be positioned on an electromotive force of direct current switch 1.Therefore, the electric current of electric arc 11 can be derived by the first arc extinguishing board 27.In addition Lorentz force 12, additional application magnet can also therefore be omitted, because can be produced by the electric current of electric arc 11 self.Another advantage is, the current strength of electric arc 11 is stronger, and therefore electric arc 11 is more dangerous, and the intensity of Lorentz force 12 increases equally, and electric arc 11 can fast and reliably extinguish in arc extinguishing board 9.
Especially can specify, the first arris 28 of the first arc extinguishing board 27 in u shape is connected conductively with electric output 3.Especially can specify at this, the end of the first arris 28 is connected with electric output 3 substantially conductively, thus the electric current of electric arc 11 is flowed by the first arris 28 at least partly.
Can specify in addition, the second arris 29 of the first arc extinguishing board 27 in u shape arranges substantially parallel with the arc extinguishing board 9 be disposed adjacent.Therefore, between the second arris 29 and the arc extinguishing board 9 be disposed adjacent, plane-parallel space 32 is formed.At this, electric arc 11 is moved in space 32 by Lorentz force 12, and therefore the energy of electric arc 11 can dissipate effectively.This plane-parallel space 32 especially can cause the dispersal direction 25 away from switch contact 4,5 of electric arc 11.
In addition can specify, the first arris 28 of the first arc extinguishing board 27 in u shape and the second arris 29 are arranged substantially parallel to each other.If the end of electric arc 11 is got over to the first arc extinguishing board 27 from wire jumper 20 in disconnection process, then can form especially strong Lorentz force 12 on the direction of arc extinguishing board 9 by the structure especially shown in Fig. 4.
Fig. 1 shows the especially preferred embodiment of direct current switch 1 at this, direct current switch 1 is provided with at least one electrical input 2 and at least one electric output 3 accordingly, and there is at least one the first switch contact 4 and mobilizable wire jumper 20, wherein direct current switch 1 also has arc-control device 6, wherein this arc-control device 6 has at least one first arc control device 7, it comprises multiple arc extinguishing board 9, wherein the first arc extinguishing board 27 is configured to u shape, first arris 28 that should be the first arc extinguishing board 27 of u shape is connected conductively with electric output 3, second arris 29 of the first arc extinguishing board 27 in u shape arranges substantially parallel with the arc extinguishing board 9 be disposed adjacent, first arris 28 and second arris 29 of the first arc extinguishing board 27 wherein in u shape are arranged substantially parallel to each other.In such an embodiment, electric arc 11 can realize especially favourable performance.
Fig. 4 shows the preferred implementation under the first state of electric arc 11, and wherein the end of electric arc 11 is from the wire jumper 20 of especially potential-free more to the first arc extinguishing board 27, and this arc extinguishing board is connected conductively with the first output 3.At this as by shown in arrow, the electric current of electric arc 11 flows out along the direction of electric output 3 by this u shape region and by the first arris 28.Create magnetic field at this by the electric current in this u shape region and the first arris 28, it on the direction of arc extinguishing board 9 and especially produces Lorentz force 12 away from wire jumper 20 ground.
Fig. 5 shows Fig. 4 substantially under the second state of electric arc 11, this second state substantially directly follow with first state of Fig. 4 after.By being extended through by electric arc 11 in the space 32 between second arris 29 and adjacent arc extinguishing board 9, generation current in the second arris 29, the current path wherein in the second arris 29 increases along with the increase of the depth of penetration of electric arc 11 in space 32.Therefore further enhancing Lorentz force 12, electric arc pushes in arc extinguishing board by it, thus can realize dissipating especially fast of electric arc 11.
Preferably also can specify, arc-control device 6 has the second arc control device 8, and these arc control device have multiple arc extinguishing board 9, and is provided with the first arc extinguishing board 27 equally in the second arc control device 8.First arc extinguishing board 27 of the second arc control device 8 constructs identical with the first arc extinguishing board 27 of the first arc control device 7.
Can specify at this, direct current switch 1 has at least one electric arc and to advance track 18, and this electric arc track 18 of advancing is connected conductively with the first switch contact 4, and this electric arc track 18 of advancing arranges relative with the arc extinguishing board 9 in direct current switch 1 and puts.According to the structure of direct current switch 1, can specify at this, electric arc track 18 of advancing is parts of the first arc control device 7.Therefore, it is possible to provide attractive path in electrotechnics for electric arc 11.To be advanced track 18 by electric arc, electric arc 11 pulls open from the first switch contact 4 on direction 26, and wherein it skims over arc extinguishing board stacking and at this degradedness respectively.
Claims (11)
1. a direct current switch (1), it has at least one electrical input (2) and at least one electric output (3), and there is at least one the first switch contact (4) and mobilizable wire jumper (20), wherein direct current switch (1) also has arc-control device (6), wherein this arc-control device (6) has at least one first arc control device (7), it comprises multiple arc extinguishing board (9), it is characterized in that, at least one first arc extinguishing board (27) in these arc extinguishing boards (9) is shaped like this, especially so bending, namely on the electric arc caused by switching process (11), in the first arc control device (7), Lorentz force (12) works along the direction of arc extinguishing board (9) respectively.
2. direct current switch (1) according to claim 1, is characterized in that, the first arc extinguishing board (27) is configured to u shape.
3. direct current switch (1) according to claim 2, it is characterized in that, first arris (28) of the first arc extinguishing board (27) in u shape is connected conductively with the position be positioned on an electromotive force of direct current switch (1).
4. direct current switch (1) according to claim 3, is characterized in that, first arris (28) of the first arc extinguishing board (27) in u shape is connected conductively with electric output (3).
5. the direct current switch (1) according to any one of claim 2 to 4, it is characterized in that, second arris (29) of the first arc extinguishing board (27) in u shape arranges substantially parallel with the arc extinguishing board be disposed adjacent (9).
6. direct current switch (1) according to claim 5, is characterized in that, the first arris (28) and second arris (29) of the first arc extinguishing board (27) in u shape are arranged substantially parallel to each other.
7. direct current switch (1) according to any one of claim 1 to 6, is characterized in that, the first arc extinguishing board (27) limits the border of the arc extinguishing board stacking of the arc extinguishing board (9) of the first arc control device (7).
8. direct current switch (1) according to any one of claim 1 to 7, is characterized in that, the first arc extinguishing board (27) arranges adjoin with the tracks of wire jumper (20).
9. direct current switch (1) according to any one of claim 1 to 8, it is characterized in that, first arc extinguishing board (27) has accommodation section (30), and in accommodation section (30), arrange the contact block component (31) be made up of insulating material.
10. direct current switch (1) according to any one of claim 1 to 9, it is characterized in that, it has second switch contact (5), and in order to set up the current path from input (2) to the conduction of output (3), the first switch contact (4) is connected by wire jumper (20) conductively with second switch contact (5).
11. direct current switches (1) according to any one of claim 1 to 10, it is characterized in that, arc-control device (6) has the second arc control device (8), these arc control device have multiple arc extinguishing board (9), and in the second arc control device (8), be provided with one first arc extinguishing board (27) equally.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210110411 DE102012110411A1 (en) | 2012-10-31 | 2012-10-31 | DC switchgear |
| DE102012110411.5 | 2012-10-31 | ||
| PCT/EP2013/072805 WO2014068054A1 (en) | 2012-10-31 | 2013-10-31 | Dc voltage switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104813428A true CN104813428A (en) | 2015-07-29 |
| CN104813428B CN104813428B (en) | 2018-03-20 |
Family
ID=49582719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380057091.6A Active CN104813428B (en) | 2012-10-31 | 2013-10-31 | Direct current electric switch |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2915174B1 (en) |
| CN (1) | CN104813428B (en) |
| BR (1) | BR112015009675A2 (en) |
| DE (1) | DE102012110411A1 (en) |
| RU (1) | RU2015120568A (en) |
| WO (1) | WO2014068054A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341615A (en) * | 2020-03-26 | 2020-06-26 | 贵州泰永长征技术股份有限公司 | Special floating static contact assembly device structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619592A1 (en) * | 1993-04-07 | 1994-10-12 | Schneider Electric Sa | Electric circuit breaker with electrodynamic repulsion of the contacts and double extinguishing chambers |
| CN1205530A (en) * | 1997-07-14 | 1999-01-20 | 尹顿公司 | Electric current switching apparatus with arc spinning extinguisher |
| CN201877321U (en) * | 2010-11-29 | 2011-06-22 | 西安交通大学 | Arc extinguishing device for improving on-off performance of low-voltage electric apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2025188A (en) * | 1987-04-21 | 1990-02-01 | Circuit Breaker Industries Limited | Circuit breaker arc-extinguishing plates |
| US5004874A (en) * | 1989-11-13 | 1991-04-02 | Eaton Corporation | Direct current switching apparatus |
| JPH06196079A (en) * | 1992-12-25 | 1994-07-15 | Mitsubishi Electric Corp | Switch |
| DE20105432U1 (en) * | 2001-03-28 | 2002-09-26 | Schaltbau GmbH, 81677 München | Blow in AC operation |
-
2012
- 2012-10-31 DE DE201210110411 patent/DE102012110411A1/en not_active Ceased
-
2013
- 2013-10-31 BR BR112015009675A patent/BR112015009675A2/en not_active IP Right Cessation
- 2013-10-31 EP EP13789741.9A patent/EP2915174B1/en active Active
- 2013-10-31 CN CN201380057091.6A patent/CN104813428B/en active Active
- 2013-10-31 WO PCT/EP2013/072805 patent/WO2014068054A1/en active Application Filing
- 2013-10-31 RU RU2015120568A patent/RU2015120568A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619592A1 (en) * | 1993-04-07 | 1994-10-12 | Schneider Electric Sa | Electric circuit breaker with electrodynamic repulsion of the contacts and double extinguishing chambers |
| CN1205530A (en) * | 1997-07-14 | 1999-01-20 | 尹顿公司 | Electric current switching apparatus with arc spinning extinguisher |
| CN201877321U (en) * | 2010-11-29 | 2011-06-22 | 西安交通大学 | Arc extinguishing device for improving on-off performance of low-voltage electric apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341615A (en) * | 2020-03-26 | 2020-06-26 | 贵州泰永长征技术股份有限公司 | Special floating static contact assembly device structure |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2915174A1 (en) | 2015-09-09 |
| WO2014068054A1 (en) | 2014-05-08 |
| RU2015120568A (en) | 2016-12-20 |
| BR112015009675A2 (en) | 2017-07-04 |
| DE102012110411A1 (en) | 2014-05-15 |
| CN104813428B (en) | 2018-03-20 |
| EP2915174B1 (en) | 2017-04-26 |
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