Switchgear

FIELD: electricity.

SUBSTANCE: in several horizontal planes around rotating switching axis on insulating frame, fixed contacts are located. These contacts contain upper and lower contact fingers which are released and closed by electroconductive bus as moving switching contact.

EFFECT: design simplification, functionality enhancement and increase in durability.

9 cl, 8 dwg

 

The invention relates to a switching device with two operating positions to switch the windings in the transformer, and the switching noise current is switched from one circuit to another.

Such a switching device is known under the name "Advanced Retard Switch", abbreviated as ARS, the original publication of the applicant "Advanced-Retard-Switch (ARS), operating instructions BA 274/01", the output BA 274/01de, 0605, publication date June 2005 This is a known switching device can be used for various applications in combination with switch branch windings regulated under the load of the transformer. First of all, it is used for switching the polarity of the regulated voltage in a wide range of regulation, for example, in futuremusic transformers. It performs the dual function of the switch poles.

In this known device for each dial-up phase generally has two horizontal plane. In each plane around a Central rotating commutating axis of the insulating frame are fixed contacts. These fixed contacts on the choice locked in each plane by conductive arcuate switching segment, attached to the axis. The movement known commute the ion device from one operating position to another is due to the rotational axis. Change working positions requires a switching step 120.

In the known switching device movable switching segment contains many are movable against the force of the contact springs of the contact fingers or plates, which are movable switching segment can reliably run on appropriate stationary, located on the insulating frame contact even in case of small, technologically inevitable horizontal deviations. Contact fingers or plates provide good coverage of the corresponding fixed contact or contacts and, thus, reliable communication.

This known device has various disadvantages. First, the movable switching contact, i.e. the switching segment, with its many moving independently of each contact finger is an extremely complex piece with many separate parts and, thereby, respectively roads and difficult to manufacture. Further, due to the fact that the corresponding fixed contacts runs into a lot of contact fingers movable switching contact, and every time we have to overcome the efforts of the springs on the respective contact fingers, requires a high torque to actuate the Central axis.

Neo is required, typically, two functional plane phase greatly limit the possible production program due to the length of the switching device length. The geometry of the contact fingers on the switching segment and suitable to them stationary contacts on the insulating frame provides only a small amount of the switching contact. However, it is crucial for a lifetime.

The objective of the invention is to provide a switching device devoid of the above disadvantages.

This problem is solved by means of the switching device with the features of the first claim. Dependent claims relate to particularly preferred embodiments of the invention.

According to the invention the movable switching contact, i.e. arcuate switching segment, made in the form of a simple bent tire of electrically conductive material. There are no contact pins, springs, guides - switching segment consists only of solid tyres, mainly copper; its ends are narrowed to ease crowding on the stationary contacts. This bus can be a simple way svinina with insulating kontaktanzeigen, which, in turn, is attached to the axis. Obviously, this is an essential and cost-effective simplification. In addition, due to the position of matroushi segment, you can combine both the functional plane, each with four places of contact in the same plane, with six places of contact.

In a particularly preferred embodiment of the invention at the ends of the arcuate switching segment in the second plane can be fixed, for example screwed, special items of special resistant to the burning material. This contributes also necessary to extend the service life of the increase in special, resistant to burning material. In addition, due to the displacement of the switching contact to a second plane passing continuous current copper busbar for the most part protected from contamination more resistant to burning material.

According to another characteristic of the invention a stationary, fixed to the insulating frame contacts contain upper and lower, parallel contact fingers, decompresses against the force of the springs so that the switching segment can enter between them and to establish electrical contact.

The particular advantage of the invention is to reduce the number of separate parts; all fixed contacts consist mostly of identical parts. In addition, due to the possible in a particularly preferred embodiment of the invention combining functional planes in a single plane, the number of parts is also reduced. Galeev proposed switching device in comparison with the prior art requires significantly less torque for actuation, as in clash of the movable switching segment have to travel significantly less effort springs on the respective contact fingers.

The invention is explained in more detail below using the drawings, which depict:

figure 1 - proposed switching device;

figure 2 - part of the switching devices in the future;

figure 3 - this part is from a top view in schematic section;

figure 4 - contactemail switching devices;

5 is a detail of the fixed contact of the switching device;

6 is a detail portion of this contact.

Fig.7 - stationary contact, which is particularly preferred, it may be used in the proposed switching device;

Fig - process switching, i.e. switching of the switching device from one steady-state operating position to another.

Figure 1 shows that the switching device comprises a top known in itself cylinder 1 on which is fixed around the top ring of the cage 2. It is the top of the adapter 3. At the lower end is lower ring-cell 4, which is fixed to the bottom of the adapter 5. Between the top 3 and bottom 5 adapters vertically and parallel to each other are the contact terminals 6. In the device pictured here at an angle of 20 with respect to the Rog to each other are eighteen such contact terminals 6. In six of these contact terminals 6 in three different horizontal planes for each dial-up phase is provided by one plane, and with the increase of the total current increases and the number of planes - fixed fixed contacts 7. Still available contact pins 6 are so-called idle rods, which serve to increase the rigidity of the entire device. In figure 1, a total of six fixed contacts of the first plane indicated by the position 7', the second plane position of the 7", and the third plane position of the 7"'. In the center of the switching device is a vertical switching axis 8, which is in each plane fixed on her contactemail 9. This contactnotes 9 opposite each other secured two arcuate switching contact 10, which thereby rotate together with the axle 8. Inter-connector 11 provided two on the plane and secured against each other on two adjacent fixed contacts, creating a reliable electrical contact between the two fixed contacts. Movable switching contacts 10 are on the arc of a circle 120, so that in each phase in steady state simultaneously contact two covered and one open fixed contact 7, which thereby electrically connect the us with each other. The axle 8 is driven by the Maltese mechanism (not shown)associated with the upper gear stage 11. His drive is the drive shaft 12, which in a known manner is connected to the drive.

Figure 2 detailing contactemail 9, fixed on the axis 8. Here can clearly see that with two horizontally opposite sides of the insulating contactnotes 9 fixed at two movable arc switching contact 10. These switching contacts 10 are made of solid electrically conductive material, mainly copper.

Figure 3 contactemail 9 schematically depicts a top view. It is particularly clearly seen that the steady state is electrically connected two covered and one open fixed contact 7.

Figure 4 in more detail shows contactemail 9, bearing described the massive arched switching contacts 10. To the inner side of the free end of the switching contact 10 is screwed particularly resistant to burning material 15. The free ends of the signal contacts 10 and resistant to burning material 15 are rounding 16 to the best of crowding on respectively lockable fixed contacts, described in more detail below. The whole contactemail 9 is fixed on the axis 8 (not the azan) through the flange 14.

Figure 5 Assembly depicted the fixed contact 7 of the proposed switching devices. This contact 7 has a top 18 and is made symmetrically him bottom 19 contacttitle, roaming through the corresponding contact of the rod on which they should be fixed. Between the two contacttitle 18, 19 fixed conductive contact 20 having a mounting hole 21 for fixing the connecting wires (not shown). This conductive contact 20 is in electrical connection with the top 22 and bottom 23 of the contact fingers of the contact zone. The upper contact fingers 22 are deflected upward against the force of the upper spring contacts 24 (6), and the lower contact fingers 23 are deflected downward against the force of the lower spring contacts 25 (6). Between the contact fingers 22, 23 include respective movable switching contact 10, which creates the electrical connection. Due to the springing arrangement of the contact fingers 22, 23, covering the movable switching contact 10 from both sides, creates, first, the desired contact pressure, and secondly, compensated minor horizontal tolerances of the entire device. To the front end of one or both of the contact fingers 22, 23 are soldered resistant to burning material 30, 31, who along with resistant abhor is of material 15 on the switching contact 10 commutes increasing and decreasing currents. The position of the contact finger 22, 23 with resistant to the burning material 30, 31, whether to the left or to the right in the contact housing 32, depends on the position in the switching device. Between the contact fingers 22, 23 are still bearing 26. Top and the bottom of the contact device is put on the upper 27 and lower 28 screens, having in the middle of the corresponding holes, which provide for donning to the appropriate contact rod. Shows the bolts 29, which are fixed contacttitle 18, 19 and screens 27, 28 through the holes on the contact terminals. The screens 35, 36 located on the contact body 32, screen contact fingers 22, 23 and resistant to burning materials 30, 31 and serves to create the best structure of the electric field. This part is similar to the fixed contact with contacttitle, screens and holes in which are inserted the bolts that are already known from the publication DE 102004041317 B3 of the present applicant.

Figure 6 shows a detail of the fixed contact. It is seen that the top 22 and bottom 23 of the contact fingers with the contact springs 24, 25 are located in a separate contact the housing 32 (not shown). The contact fingers 22, 23 contain on the opposite side of the terminals 33, 34, which in one particularly preferred embodiment of the invention cover the conductive contact 20 with obey the parties, thereby, a direct electrical connection. The rails 38, located at the top between the contact fingers 22 and washers 37 and bottom between the contact fingers 23 and washers 37 (not shown), help to avoid switching between the contact fingers 22, 23 and a conductive contact 20 as a result of processes of vibration when connecting or disconnecting the switching contact 10.

7 the fixed contact is shown again. Thus merely by donning the contact terminals 33, 34 on the conductive contact 20 stationary contact, as he is depicted in figure 5, can be implemented by a simple modular way, i.e. according to the principle of modularization.

On Fig depicts the proposed switching of the switching device from one operating position to another. In the upper part shows the electrical circuit, and in the lower part the corresponding provision of contactnotes and movable switching contacts of one phase relative to the fixed contacts. Six stationary contacts of one phase denoted by K1-K6. The left figure is the first steady state operating position; the direction of rotation at the beginning of the switch indicated by the arrow. To the right of the switching contacts respectively rotated through an angle of 60. Further to the right the angle of rotation is already a little more than 60, the noise current is switched on on the natives circuit; this is indicated by the lightning bolt symbol. On the right picture after turning, in total, at an angle of 120 is reached a new steady-state position. This switching is completed; it was in accordance with the stated function dual switch poles.

1. Switching device with two operating positions to switch the windings during operation of the transformer, and the switching noise current is switched from one circuit to another, for each dial-up phase is provided by at least one horizontal plane, and in each horizontal plane around a Central vertical made with the possibility of rotation of the commutating axis on a common insulating frame are fixed contacts while the fixed contacts in each plane is made with selective circuit through at least one movable switch contact mounted on the switching axis, characterized in that the movable switching contact (10) made in the form of arcuate horizontal bus bars made of electrically conductive material, with fixed contacts (7) contain upper and lower, parallel contact fingers (22, 23), decompresses against the force of the upper and lower contact springs (24, 25) with the walking in between movable switching contact (10) and an electrical contact.

2. The device according to claim 1, characterized in that the movable switching contact (10) is made in the form of solid tires made of copper.

3. The device according to claim 2, characterized in that the ends of the bus narrowed.

4. The device according to claim 1, characterized in that the movable switching contact (10) is fixed on contactnotes (9) of an insulating material, which, in turn, is firmly connected with the switching shaft (8).

5. The device according to claim 1, characterized in that at the ends of the movable switching contact (10) is fixed resistant to burning material (15).

6. The device according to claim 5, characterized in that it is resistant to burning material (15) is fixed in the second radial plane.

7. The device according to claim 1, characterized in that the fixed contact (7) has an upper kontaktdaten (18) and performed symmetrically his lower kontaktdaten (19), while between the two contacttitle (18, 19) is fixed conductive contact (20).

8. The device according to claim 1, characterized in that on the front end, at least one contact finger (22, 23) is resistant to burning material (30, 31).

9. The device according to claim 7, characterized in that the top and the bottom of the fixed contact (7) Assembly worn upper and lower screens (27, 28), while contacttitle (18, 19) and screens (27, 28) is fixed by bolts on the insulating frame.



 

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Switchgear // 2449401

FIELD: electricity.

SUBSTANCE: in several horizontal planes around rotating switching axis on insulating frame, fixed contacts are located. These contacts contain upper and lower contact fingers which are released and closed by electroconductive bus as moving switching contact.

EFFECT: design simplification, functionality enhancement and increase in durability.

9 cl, 8 dwg

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2 cl, 2 dwg

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3 cl, 2 dwg

FIELD: electrical engineering.

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4 cl, 4 dwg

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3 cl, 2 dwg

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EFFECT: enhanced operating reliability and reduced maintenance and early-failure charges.

2 cl, 4 dwg

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