CN1096397A - The load selector that is used for the adjustable transformer shunting switch - Google Patents
The load selector that is used for the adjustable transformer shunting switch Download PDFInfo
- Publication number
- CN1096397A CN1096397A CN 94105448 CN94105448A CN1096397A CN 1096397 A CN1096397 A CN 1096397A CN 94105448 CN94105448 CN 94105448 CN 94105448 A CN94105448 A CN 94105448A CN 1096397 A CN1096397 A CN 1096397A
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- Prior art keywords
- switch
- contact point
- vacuum
- load
- divides
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The present invention relates to a kind of load selector that is used for the adjustable transformer shunting switch.This load selector has two separate mobile branch contact points, and one of these contacts connect the vacuum switch of a switching load electric current, another minute contact point be connected to a vacuum switch that cut-offs weighing apparatus electric current between two adjacent taps.
With cut-off load current and continue through-flow vacuum that to close what connect be one the 3rd vacuum switch, and these two vacuum switches that are connected in series are almost operated simultaneously.
Description
The present invention relates to a kind of two movable load selectors that divide contact point that have that are used for the adjustable transformer shunting switch.
A kind of like this load selector is disclosed among the DE4223439.
This known load selector has the branch contact point of two separate activities, wherein load current and long-term through-flow vacuum switch are cut-off in one of the additional connection of the branch contact point of first activity, the branch contact point of second activity is additional to be connected one and has been connected in series cut-offfing the balanced balanced current between adjustable transformer two adjacent taps and the switch of this current path being provided of an effective resistance, before first fen contact point leaves present fixed contact, the second movable contact point that divides all can arrive new fixed contact in each switch over travel, and this and switch orientation independent.
But this load selector can not guarantee to prevent restriking of electric arc when the vacuum switch tripping operation of cut-offfing load current, can not prevent that vacuum loss and other problem from appearring in this switch.
Therefore the objective of the invention is to improve a kind of like this load selector, it can provide maximum protection to preventing the vacuum switch generation functional fault that cut-offs load current.
Above-mentioned purpose of the present invention is to realize like this, to with cut-off load current and allow first of vacuum switch series connection that this electric current continues to flow through movablely to divide that contact point is additional to be connected a preferably identical vacuum switch of structure, and the vacuum switch of two serial connections is almost operated simultaneously.
People know in order to improve the error protection ability, can will have the fracture scheme replacement of the vacuum circuit-breaker of single break with two tandem taps.Adopt a vacuum switch to realize among U.S. Pat-PS3283101, the fixing contact acting in conjunction of this bridging contact and two disposed adjacent with movable bridging contact of installing; And the open text DE-OS2125296 of Germany has introduced another kind of form of implementation, and it has two and is contained in the axial breakpoint of configuration successively in the common chamber.
In this case, all require vacuum switch to have the special structure of making especially, this involves great expense switch.On the contrary, device of the present invention is made of two independent vacuum switches, and is meant two switch elements that structure is identical.
The present invention is further described below with reference to the accompanying drawings for example.
Fig. 1 represents the schematic diagram of load selector of the present invention.The tap of tap coil and fixed contact n, (n+1) ..., (n+m) being connected, these fixed contacts can be arranged ringwise or orthoscopic is arranged.It comprises that via one two same vacuum switch SKV and the series circuit of ZKV are connected to common conductor, and as described in the main application, also comprise one independently with the movable auxiliary contact HKW that does not have mechanical couplings, it is connected on the common wire via the series circuit of an auxiliary switch HKV and effective resistance R, and this auxiliary switch can be made of vacuum switch.Fig. 2 has represented relevant circuit diagram, and this is from n(n-1), (n+2), and return the repetition cascade circuit of (n+1).
Fig. 3 represents the load selector schematic diagram that another has changed, wherein switch element is contained on the moveable arm, here this moveable arm is supporting main contacts SKM, and movable independently auxiliary contact HKW is that insulation ground dress is cutting, and electric going up with the arm that supports main contacts SKM is connected.
Claims (3)
1, the load selector that is used for the adjustable transformer shunting switch, have two movable contact points that divide, wherein one of the additional connection of the branch contact point of first activity is cut-off load current and is continued through-flow vacuum switch, the branch contact point of second activity is additional to connect cut-offfing the balanced balanced current between adjustable transformer two adjacent taps and the switch of this current path being provided of a serial connection effective resistance, the first movable contact point that divides also supports like that as the second movable contact point that divides, they move independently of each other, between do not exist the coupling and influence each other, before first fen contact point leaves present fixed contact, the second movable contact point that divides all can reach new fixed contact position in each switch motion, and with the switch orientation independent, it is characterized in that
First movable divides that contact point (SKM) is additional to be connected one and comprise and cut-offs load current and continue the through-flow vacuum switch (SKV) and the series circuit of another vacuum switch (ZKV), and the vacuum switch of these two serial connections (SKV, ZKV) almost action simultaneously.
2, connect the load selector of claim 1, it is characterized in that, (SKV ZKV) is the identical and pass of structure to these two vacuum switches that are connected in series.
3, according to any load selector in the aforementioned claim, it is characterized in that, the second movable additional connection of contact point (HKW) switch (HKV) that divides, and be connected in series an effective resistance (R), (SKV ZKV) constitutes a construction unit jointly for this series circuit and QA first minute subsequently contact point (SKM) and the vacuum switch that is connected in series with it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4315060.8 | 1993-05-06 | ||
| DE19934315060 DE4315060A1 (en) | 1992-07-16 | 1993-05-06 | Load selector (selector switch) for tap switches on tapped transformers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096397A true CN1096397A (en) | 1994-12-14 |
| CN1036811C CN1036811C (en) | 1997-12-24 |
Family
ID=6487373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94105448A Expired - Fee Related CN1036811C (en) | 1993-05-06 | 1994-04-20 | Load Selector used for switch of adjustable transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036811C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667975A (en) * | 2009-12-23 | 2012-09-12 | 赖茵豪森机械制造公司 | Step switch comprising a polarity switch for a variable transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081741A (en) * | 1975-10-29 | 1978-03-28 | Asea Aktiebolag | On-load tap changer |
| JPS5792813A (en) * | 1980-12-01 | 1982-06-09 | Toshiba Corp | On-load tap changer |
| DE3344376A1 (en) * | 1983-12-08 | 1985-06-13 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Vacuum switch |
| JP2642727B2 (en) * | 1989-02-17 | 1997-08-20 | 株式会社日立製作所 | Circuit of vacuum switch type tap changer under load |
-
1994
- 1994-04-20 CN CN94105448A patent/CN1036811C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667975A (en) * | 2009-12-23 | 2012-09-12 | 赖茵豪森机械制造公司 | Step switch comprising a polarity switch for a variable transformer |
| CN102667975B (en) * | 2009-12-23 | 2015-05-06 | 赖茵豪森机械制造公司 | Step switch comprising a polarity switch for a variable transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036811C (en) | 1997-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19971224 Termination date: 20100420 |