CN1036958C - Load selector used in stepping switch of adjustable transformer - Google Patents
Load selector used in stepping switch of adjustable transformer Download PDFInfo
- Publication number
- CN1036958C CN1036958C CN94101925A CN94101925A CN1036958C CN 1036958 C CN1036958 C CN 1036958C CN 94101925 A CN94101925 A CN 94101925A CN 94101925 A CN94101925 A CN 94101925A CN 1036958 C CN1036958 C CN 1036958C
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Abstract
The present invention relates to a load selector used in a step switch of an adjustable transformer, which is provided with two movable selector contacts, wherein the first movable selector contact switches a vacuum switch suitable for switching sustained current, and the second movable selector contact controls a switch suitable for switching compensating current. The two movable selector contacts move mutually independently, wherein one movable selector contact moves more slowly than the other one, and one contact follows to move in a bouncing way, and moving orders of the movable selector contacts are irrelevant to switching directions.
Description
But the present invention relates to a kind of load selector that is used for the step switch of voltage regulating transformer, it has two movable selector contacts, and this load selector is disclosed among the German publication document DE-OS 2321369.
In this known load selector structure, the contact of on two selector arms a selector being housed respectively, wherein connect a vacuum switch that is suitable for switching on and off continuous current behind first moving contact, switch and a switching resistance of being suitable for opening and closing offset current that one of second moving contact serial connection disposes between adjustable transformer tap in two adjacent minutes.Make two movable selector contacts have certain coupling relation each other and with the driving of vacuum switch like this, promptly when switch change-over, the also conversion of the direction of rotation of drive unit, and during each step switch, the second selector contact connects behind this second selector contact and is applicable to vacuum switch and switching resistance that switches on and off offset current in short time alone near the tap of higher step voltage.
In this known load selector, look the variation of switch direction, this resistance contact point moves subsequently or in advance, that is to say that switching process itself changes with the switch direction.
The selector arm of such two loading selector contacts must be driven by energy-accumulating element jointly; Especially disadvantageously need be with complicated kinematics structure and necessary mechanical accumulated energy element loss, particularly when each step switch, must realize by different switch steps.
Therefore task of the present invention provides a kind of like this load selector, it adopts the kinematic mechanism of simplifying, and is simple in structure, can discharge upwards symmetry work at two, and only adopt an energy-accumulating element that is used for the load selector map function, this energy-accumulating element has same switch step.
In order to finish this task, the invention provides a kind of load selector that is used for the step switch of adjustable transformer and have two movable contact points of selecting, wherein connect a vacuum switch that is suitable for switching on and off continuous load current behind the first movable selector contact, one of second movable selector contact serial connection is suitable for cut-offfing switch and switching resistance of offset current between the adjustable transformer adjacent taps, under static state, the first and second movable selector contacts are positioned in the same tap, it is characterized in that:
The first movable selector contact SKM and the second movable selector contact HKW are separate, and there is not mechanical lotus root to connect, can in action, not interact, when each switch motion, no matter how conversion of switch direction, before first selector contact SKM leaves former fixed contact h, this second movable selector contact HKW arrives new fixed contact position (n+/-1), the second movable selector contact HKW is directly by a driving shaft Continuous Drive, and the first movable selector contact SKM can follow the tracks of the second movable selector contact HKW and jumpily moves after energy-accumulating element discharges, and this energy-accumulating element is by described driving shaft energy storage.
What load selector of the present invention was especially useful is, its operation and switch orientation independent, also with the irrelevant to rotation direction of drive unit, its auxiliary contact are leading always, therefore main contacts only needs calm operation to get final product, and another advantage is that the driving wheel of load selector is direct controlled driving.Therefore energy-accumulating element only drives main contacts, and main contacts always hysteresis motion, so only open-and-shut energy-accumulating element of needs.
In load selector of the present invention, main and auxiliary contact can be moved mutually fully independently, these auxiliary contact are moved by the driving wheel effect of slow rotation, realize preselected to the load tap changer of new connection, and then main contacts by the energy-accumulating element great-jump-forward that discharges finish handoff procedure.
Further structure of the present invention is to separate main contacts is vertical with auxiliary contact, and make it respectively rotate layout independently around a common axis, and fixed contact is also disposed around this axle with one heart, each links to each other these fixed contacts with a tap of tapped coil, their vertical extent, development length make main contacts can contact with it with auxiliary contact.
Having described fixed contact among the DE-OS 2219220 is arranged vertically on a plurality of aspects, their way of contact is the contact of rolling, for adopting this traditional arrangement, space proportion when needing a plurality of contact wheels that intercouple of improvement to contact, according to design of the present invention, fixed contact can be similar to the transposition straight line of sliding, and the following formation of armature contact, promptly they can realize sliding contact unobstructedly.
About operating of contacts, promptly the wiping of contact can be realized by parallel contact wheel, hook, and non-touch with also can adopting a contact and other contact clamping, thus realization contact movement independently separately.
Also have a kind of possibility, all switch member all are configured on the movable switch contact, only have electric connecting relation with another movable switch contact, this can realize by a pliable and tough multi cord.
These contacts itself adopt conventional mode to make, particularly suitable be roller type or knife-and-clip contact.
Further specify the present invention below with reference to the accompanying drawings for example.
Fig. 1 is an expression load selector schematic diagram of the present invention.
Fig. 2 represents from a voltage level to the necessary step of another voltage level.
Fig. 3 represents from n to (n+1), again to (n+2) and then return the switch figure of the repeatedly stepping shape of (n+1).
Fig. 4 represents converted load selector.
Fig. 5 represents the schematic diagram of another load selector.
Fig. 1 represents a load selector schematic diagram of the present invention.The tap of graded winding and fixed contact n, (n+1) ... (n+m) be connected, these taps can be ringwise or linear arrange.This load selector further comprises a switch contact SKM, it is connected with common bus by a vacuum switch SKV, also comprise a movable auxiliary contact HKW who does not independently have mechanical couplings, it comprises that via one auxiliary switch HKM is connected with common bus with the series circuit of switching resistance R.Fig. 2 has shown the connection step that is transformed into necessity of another voltage level from a voltage level.No matter this switching is to be converted to a higher voltage level from a lower voltage level, otherwise perhaps, these connect step all is independently.Each is connected step and adopts (1) to indicate up to (9).
Fig. 3 represents to be used for the relevant switch figure of many taps circuit, the order be from n to (n+1), (n+2), then turn back to (n+1).
Obviously be converted to higher or the low voltage level irrelevant, the eternal leading of auxiliary contact HKW, and play the effect of a preliminary election.So fixed contact n, (n+1), (n+2) ... structurally be to design like this, promptly they can neither depend on main contact SKM, also do not depend on auxiliary contact HKW ground switch successively.
Fig. 4 represents a converted load selector, and its all elements are contained on the lever arm, and main contacts SKM is housed on arm, mark this arm with the branch line in the drawings, and it can be connected with bus by a collector ring.The auxiliary contact HKW of self contained function lays with insulating
Claims (6)
1. the load selector that is used on the step switch of adjustable transformer has two movable contact points of selecting, wherein connect a vacuum switch that is suitable for switching on and off continuous load current behind the first movable selector contact, one of second movable selector contact serial connection is suitable for cut-offfing switch and switching resistance of offset current between the adjustable transformer adjacent taps, under static state, the first and second movable selector contacts are positioned in the same tap, it is characterized in that:
The first movable selector contact (SKM) and the second movable selector contact (HKW) are separate, and there is not machinery to be coupled, can in action, not interact, when each switch motion, no matter how conversion of switch direction, leave former fixed contact (h) before at first selector contact (SKM), this second movable selector contact (HKW) arrives new fixed contact position (n+/-1), the second movable selector contact (HKW) is directly by a driving shaft Continuous Drive, and the first movable selector contact (SKM) can be followed the tracks of the second movable selector contact (HKW) and jumpily moved after energy-accumulating element discharges, and this energy-accumulating element is by described driving shaft energy storage.
2. load selector according to claim 1 is characterized in that: the switch that should be connected with the second movable selector contact (HKW) is the vacuum switch (HKV) that is used for the switch offset current.
3. according to the load selector of aforementioned arbitrary claim, it is characterized in that: two movable selector contact (SKW, HKM) coaxial arrangement, vertical mutually the installation, and each vertically extends to relevant fixed contact (n ... n+m), thus these fixed contacts contact this two armature contacts independently of each other.
4. according to the load selector of claim 1 or 2, it is characterized in that (SKM HKW) moves linearly independently of each other, and wherein each all can touch all fixed contact (n in two selector contacts ... n+m).
5. according to the load selector of claim 1 or 2, it is characterized in that (SKM HKW) mutually by ground clamping or perforation, but does not contact mutually, thereby can touch all fixed contact (n independently separately in these two selector contacts ... n+m).
6. according to the load selector of claim 1 or 2, it is characterized in that, belong to the switch (HKM) of the second movable selector contact (HKW) and first selector contact (SKM) mechanical connection that follows action fast closely also/or constitute a structure member unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101925A CN1036958C (en) | 1994-01-19 | 1994-01-19 | Load selector used in stepping switch of adjustable transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101925A CN1036958C (en) | 1994-01-19 | 1994-01-19 | Load selector used in stepping switch of adjustable transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1105773A CN1105773A (en) | 1995-07-26 |
| CN1036958C true CN1036958C (en) | 1998-01-07 |
Family
ID=5030437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94101925A Expired - Fee Related CN1036958C (en) | 1994-01-19 | 1994-01-19 | Load selector used in stepping switch of adjustable transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036958C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013107549B4 (en) * | 2013-07-16 | 2017-11-30 | Maschinenfabrik Reinhausen Gmbh | Load selector for step transformers and carrier arm for a selection of load selector |
| CN105263240B (en) * | 2015-11-23 | 2019-01-11 | 泰华智慧产业集团股份有限公司 | A kind of single streetlamp energy-saving control system and control method based on soft handover multi gear pressure regulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3146970A1 (en) * | 1980-12-01 | 1982-06-09 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | Load interrupter switching device |
| US4520246A (en) * | 1983-01-07 | 1985-05-28 | Mitsubishi Denki Kabushiki Kaisha | On-load tap changer of the type of vacuum switches |
| JPH02216805A (en) * | 1989-02-17 | 1990-08-29 | Hitachi Ltd | Circuit of on-load tap changer vacuum switch type |
-
1994
- 1994-01-19 CN CN94101925A patent/CN1036958C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3146970A1 (en) * | 1980-12-01 | 1982-06-09 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | Load interrupter switching device |
| US4520246A (en) * | 1983-01-07 | 1985-05-28 | Mitsubishi Denki Kabushiki Kaisha | On-load tap changer of the type of vacuum switches |
| JPH02216805A (en) * | 1989-02-17 | 1990-08-29 | Hitachi Ltd | Circuit of on-load tap changer vacuum switch type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1105773A (en) | 1995-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 19980107 Termination date: 20110119 |