Single-pole disconnecting device comprising rotatable contacting bridge, commutation switch with this device as well as circuit breaker with this commutation switch

FIELD: electricity.

SUBSTANCE: invention pertains to a single-pole disconnecting device. The single-pole disconnecting device is suggested with the following composition: contacting bridge (22) with at least one fixed contact (41, 51) operated together with the contact bridge as well as a tuner bar (26) having a cross bore (21) wherein the contacting bridge is mounted and protruded from each side of the turner bar (26), at that the bar (26) is inserted between two side plates (14) of the disconnecting device. The contacting bridge comprises two seal flanges (27) placed between radial surfaces of the turner bar (26) and side plates (14) respectively. At least one arc blow-out chamber (24) is communicated to open space of the contacting bridge (22). The turner bar (26) comprises at least one channel (29) connected to transversal intake opening (21).

EFFECT: development of the disconnecting device with turner bar and effective sealing facility.

23 cl, 12 dwg

 

The technical FIELD

The invention relates to a single-pole breaking unit containing a rotary contact bridge, at least one stationary contact, operating in conjunction with said contact bridge and connected to the current-carrying conductor, a rotary rod having a transverse hole in which the contact bridge is placed with a gap, while the contact bridge stands on each side of the rod, and a rotary rod is inserted between the two side panels NC block, while the side panels are essentially parallel to each other. The rotary contact bridge also contains two sealing flange, placed respectively between the radial surfaces of the rotary rod and side panels to ensure tightness of the inner space to outer space NC block. At least one arc chamber connected to the open space of the contact bridge.

The invention also relates to the switching device containing such a disconnect block.

The invention also relates to a circuit breaker containing such a switching device.

PRIOR art

The use of contact bridge switching devices are described in numerous patents, in particular in p the tents EP0538149 and EP0560697, registered by the applicant.

As shown in Fig. 1A, 1B, a switching device formed in the housing includes a housing 12 made of an insulating plastic material and containing a normally closed pole elements, i.e., a pair of stationary contacts 41, 51 and the movable contact bridge 22, and two interrupter chamber 24. Body 12 having, in General, a rectangular shape, formed by two large side panels. The movable contact bridge 22 is supported rotatable rod 26 inserted between the two large side panels. In turning the rod 26 has a through the receiving hole 21, the diameter of which is in a plane parallel to the plane of the large side panels. The movable contact bridge 22 passes through this hole with a clearance and stands on each side of the rod 26. Contact bridge 22 is mounted for oscillation on the rod 26. Two current-carrying conductor 4, 5 are connected to fixed contacts 41, 51.

To ensure the effective interruption of the electric current required to eliminate leakage of gas at the level of the drive axis of the rod 26. Such leakage of gases have the effect of creating reverse flow and prevent the introduction of the arc in the arc chamber.

Thus, there is a need for a hermetic seal between the rotary rod and molded to pusam. The seal may be achieved by means of two flanges placed respectively on the surfaces of the rod between the rod and the inner wall of the two large side panels. The effectiveness of such solutions, however, leaves room for improvement. Flanges seated on the drive axis with the axial working gap, which may be the passage of the gases involved in the interruption of the current.

A BRIEF STATEMENT of the substance of the INVENTION

The invention, therefore, is to eliminate the disadvantages of the prior art is to provide a disconnect block with swivel rod containing an effective sealing means.

Swivel bar disconnect unit according to the invention contains at least one channel directly connecting through the receiving hole and a radial surface, so that the quenching gases can flow directly through the said channel, at least one sealing flange to hold him to one of the side panels to achieve tightness.

According to the private variant of the invention, the rotary rod contains two channels respectively connecting the cross-receiving hole and a radial surface, so that the quenching gases can flow directly is via the channels to the sealing flanges, to press them to one of the side panels to achieve tightness.

According to the private variant of the invention, the swivel arm includes a through channel, passing directly through the rotary rod from the first radial surface to the second radial surface.

Preferably the through channel has a longitudinal axis parallel to the longitudinal axis of the rotary rod.

Preferably the through channel has a longitudinal axis coinciding with the longitudinal axis of the rotary rod, so that the quenching gases could exert axial force, essentially coincident with the longitudinal axis of the rod and distributed evenly on the sealing flanges.

Preferably the sealing flanges contain lateral cheeks, at least partially covering the longitudinal surface of the rotary rod.

Preferably the side cheeks partially close the transverse bore in which is placed the bar.

Preferably the side cheeks are located around the cylindrical perimeter of the sealing flange.

According to one variant of development of the invention the sealing flanges contain at least one eccentric bore the hole intended for the passage of a connecting rod for mechanical fastening few rods to each other, in this connection the additional rod is controlled mechanism, common to a set of several single-pole blocks.

Preferably NC block contains a pair of fixed contacts, each fixed contact works in conjunction with the rotary contact bridge and the current-carrying conductor. The block contains two arc chambers respectively communicating with the open space of the contact bridge. Each arc chamber is connected at least with one channel output quenching gas, while output channels facing the body panel NC block, located on the side-line and panel-side line is the opposite of the other panel, side load, made with the possibility of placing in contact with the release agent.

Preferably the channels output quenching gases are connected to each other in the common passage, facing the body panel NC block, located on the side lines.

Preferably the channels output quenching gases, respectively, the first and second arc chambers have different lengths, thus extinguishing gases passing in the first exhaust duct, able to suck the gases flowing in the second channel due to the Venturi effect.

According to one variant of development of the invention mentioned above, at least one exhaust channel interrupter Kama is s passes, at least one decompression chamber containing at least one interior wall is coated with at least one metal sheet.

Switching device according to the invention contains at least one of the above NC block. The said device comprises a drive mechanism contacts, with at least one NC block is made with the ability to connect, on the one hand, to release the device 7 at the level of the terminal block 5 load side, and on the other hand, to protect the electric line at the level of the terminal block 4 side load.

The circuit breaker according to the invention contains the above-mentioned switching device. The above circuit breaker contains a release device connected to the terminal pads 5 of the switching device on the load side.

BRIEF DESCRIPTION of DRAWINGS

The invention is further explained in the description of the preferred embodiment variants of the invention with reference to the accompanying drawings, in which:

Fig. 1A depicts a view of a cross-sectional side view of the known single-pole breaking unit;

Fig. 1B depicts in detail a General view of the swivel bar disconnect unit shown in Fig. 1A;

Fig. 2 depicts a General view of the circuit breaker is, containing a switching device according to a variant embodiment of the invention;

Fig. 3A depicts a General view of the circuit breaker containing a switching device according to a variant implementation of the invention in disassembled form;

Fig. 3B depicts a General view of the switching device during the Assembly process according to the variant embodiment of the invention;

Fig. 4-8 depict common types of single pole breaking unit and part of his body according to a preferred variant embodiment of the invention;

Fig. 9A and 9B depict detailed views in cross section of the suction channel opener unit according to the invention.

DESCRIPTION of the PREFERRED embodiments of the INVENTION

According to a variant embodiment of the invention, the circuit breaker 100 includes release device 7 associated with the switching device 600.

Switching device 600 according to the invention contains at least one single-pole breaking unit 10. Single-pole breaking unit 10 according to the invention indoors was held with the ability to connect, on the one hand, to release the device 7 at the level of the terminal block 5 load side, and on the other hand, to protect the electric line at the level of the terminal pads 4 on the load side. Single-pole breaking unit 10 also is referred to as a cassette.

According to a preferred variant of the invention, as shown in Fig. 3A, 3B, switching device 600 contains three single-pole breaking unit. Switching device 100 in this case is a three-pole circuit breaker. According to other variants of the implementation that are not represented here, the switching device may be a single-pole, two-pole and four-pole circuit breaker.

For purposes of simplicity, the preferred variant of the invention, the elements included in the switching device 100, in particular single-pole breaking unit 10 forming a disconnecting device 600 will be described in relation to the operational position in which the switch 100 is placed in the panel, while the front part 9 includes a vertical arm parallel to the mounting panel, and the connecting terminal 4 from the line on electric lines are located at the top and form a top surface 74 a tripping device 100, and the release device 7 is situated below. The use of terms indicating relative position, such as "side", "upper", "lower", etc. should not be understood as limiting factor. The lever is arranged to control the driving mechanism 8 e is krichesky contacts.

Each single-pole breaking unit 10 provides the capability to interrupt the electric circuit. The mentioned block preferably has the form of a flat housing 12 made of molded plastic, with two parallel large panels 14, separated by distance e corresponding to the thickness. In particular, in the illustrated embodiment, the distance e thickness is about 23 mm for the nominal current of 160 A.

The housing 12 is formed in two parts, which are preferably mirror symmetrical and are fastened to each other by means of the large panels 14 using any suitable means. As shown in the preferred embodiment of Fig. 3, the system of mating-type protrusion-groove aligns part of the housing 12 between themselves, with one of the two parts (not illustrated) contains the respective prongs for insertion into the recess of the other part. Additionally provided link 18 to ensure alignment of the housings 12 single-pole breaking unit 10 and ensuring the latest in a multipole circuit breaker 100 chain.

Single-pole breaking unit includes a disconnect mechanism 20 located in the housing 12. A disconnect mechanism 20 includes a movable contact bridge 22, capable of rotation around the axis of rotation Y. the Movable contact of the first axle 22 includes, at least one end, containing the contact pad. Terminal block movable contact bridge 22 is arranged to work in conjunction with a fixed contact. The said bridge is mounted for rotation so as to perform rotation between a disconnected position in which the contact block is separated from the fixed contact 41, and the position that provides the flow of current in which it is in contact with the fixed contact 41.

The movable contact bridge 22 is installed with the opportunity to take a swing at an angle bar 26 having a transverse bore 21 in which is located the contact bridge. The movable contact bridge 22, passing through the cross-feed opening 21 is of the rod 26. Swivel rod 26 is planted between the two side panels 14 of the housing 12 NC unit 10.

According to one variant of the invention shown in Fig. 5, 7 and 8, two sealing flange 27 is preferably located respectively between the radial surfaces of the rotating rod 26 and side panels 14, so as to ensure the tightness of the inner space to outer space NC unit 10. For example, with regard to the form of the rotary rod sealing flanges 27 are cylindrical in shape and can be made in the form of washers

Swivel rod 26 includes at least one channel 29, directly connecting the transverse receiving hole 21 and the side panel 14, so that the quenching gases can flow directly through the said channel, at least one sealing flange 27 to pin it to one of the side panels 14 to achieve an airtight seal.

According to the first alternative implementation of the pivoting rod 26 preferably contains two channels 29, respectively, transverse connecting the receiving hole 21 and a radial surface, so that the quenching gases can flow directly through the aforementioned channels to the sealing flanges 27 to press them to the side panels 14 to achieve an airtight seal.

According to the second alternative implementation of the channel 29 of the swivel rod 26 is preferably end-to-end and passes directly through the rotary rod 26 from the first radial surface to the second radial surface. Through channel 29 preferably has a longitudinal axis parallel to the longitudinal axis of the rotatable rod 26. Through channel 29, in addition, preferably has a longitudinal axis coinciding with the longitudinal axis of the rotatable rod 26, so that the quenching gases could exert axial force, essentially orie is oriented along the longitudinal axis of the rod and distributed evenly on the sealing flanges.

According to the private option exercise sealing flanges 27, the flanges contain lateral cheeks, at least partially covering the longitudinal surface of the rotating rod 26 to partially close the cross-feed opening 21. The side cheeks are preferably located around the cylindrical perimeter of the sealing flange 27.

According to a preferred variant implementation, shown in Fig. 5-8, a disconnect mechanism 20 is a disconnect mechanism is a two-position rotary type. Switching device 100 according to the invention in fact is intended in particular for applications with current up to 630 A, and in some applications - for current up to 800 A, in which one opening may not be enough. The movable contact bridge 22 includes a contact pad at each end. The contact pads of the contact bridge 22 is preferably located symmetrically with respect to the axis of rotation Y. the Movable rotary contact bridge 22, passing through the cross-receiving hole 21 is on each side of the rod 26. NC block contains a pair of fixed contacts 41, 51, is arranged to work in conjunction with the contact terminals of the rolling contact bridge 22. The said bridge is mounted for rotation so that the make the turn between an open position, in which the contact pads are separated from the stationary contacts 41, 51, and the position that provides the flow of current in which they are in contact with the fixed contacts 41, 51. The first stationary contact 41 is arranged to connect to a power line via the terminal block 4 from the line. The second stationary contact 51 is arranged to connect to a release device 7 via the terminal block 5 side load. Single-pole breaking unit 10 contains two interrupter chamber 24, intended to extinguish the arc. Each of the arc chambers 24 communicates with the open space between the contact terminals of the contact bridge 22 and the stationary contact 41, 51. Each arc chamber 24 is limited by the two side walls 24A, a rear wall 24B, remote from the open space, the bottom wall 24C, close to the stationary contact, and the upper wall 24D. As is shown in Fig. 5, each of the arc chambers 24 the package contains at least two deionizers ribs 25, which are separated from each other by a distance providing a gas quenching gases.

According to the private variant of the invention, as specifically described in the patent application France, registered in the name of applicant, entitled "Switcgear device having at least one single-pole breaking unit comprising a contact bridge and circuit breaker comprising such a device", the housing 12 NC unit 10 further comprises a layout to optimize the flow of gases. Each of the arc chambers 24 contains at least one outlet port, United, at least one channel 38, 42 allotment quenching gases. Mentioned outlet channels 38, 42 are designed to remove gases, at least one through hole 40 to be placed on the panel 12 from the side line opposite panel side load. The body panel 12 and the load side is made with the possibility of placement in contact with a release device 7.

Each of the arc chambers 24 contains at least one exchange, the space between the two ribs 25 which is connected to gas exhaust channels 38, 42. All exchange space is preferably communicated with the suction channels 38, 42 at the level of a certain area, located at a distance from the rear wall and the side walls of the arc chamber 24.

Under this option, the exercise Assembly of the contact bridge 22 and the pivot rod 26 in the single-pole breaking unit 10 "inverted". It is desirable that the contact lever 9 of the drive mechanism 8 (see Fig. 2 and 3A) was centered on the switching device 600 interrupter circuit 100 in the process that helps to ensure balanced the Oia protective front panel protection devices electrical lines. To this end made a choice in favor of the inversion of the direction of rotation of the rod 26, namely the connecting terminal 5, associated with release device 7, is located towards the rear of the chopper circuit 100 and the connecting terminal 4 from the line is towards the front, at the top of the device.

The movable contact bridge 22, thus, makes a clockwise rotation between the open position and the closed position of the contacts. Therefore, in this preferred embodiment, in which the direction of rotation of the rotary contact bridge reversed, gazoochistnoe from a contact connected to the terminal block 5 side load, which traditionally should be directed downwards and towards the back of the device, moves up and toward the front of the NC unit 10. Region located in the rear part and the lower part of the device corresponds to the location of the release device 7 and any possible mounting supports, such as DIN rail. In particular, the first exhaust channel 38 formed at the front side of the housing 12 NC unit 10 enclosed space is essentially rectangular in shape. First mentioned channel allows you to direct the quenching gases from the terminal block 5 from naked is narrow, connected to the release device 7, in the upper part of the switching device 100. Quenching gases are ejected from the housing through the through hole 40. The location of the through holes 40 in the upper part of the tripping device, in particular on the terminal block 4 from the line, also reduces the risks of arc overlap.

Exhaust gases generated by the contact 41 connected to the terminal block 4 from the line, preferably also directed upwards and towards the front of the NC unit 10, at least one second outlet channel 42. In particular, the aforementioned at least one discharge channel 42 at least partially located in parallel large panels 14 of the housing 12 NC unit 10.

As is shown in Fig. 6, according to one variant of embodiment two side discharge channel 42 is located partially outside of the housing 12 NC unit 10. These two channels are connected to the same arc chamber 24. Each of the side suction channel 42 is connected with the interior of the housing 12 by means of two holes 44A, 44B. The outer portion side of the gas exhaust channel 42 preferably can be made in the wall of the housing 12.

According to one variant embodiment of the invention shown in Fig. 5 and 6, all of the gas exhaust channels 38, 42 are joined drugs another in the common passage, facing the body panel 12 NC unit 10 from the line. Further quenching gases are removed through a single through hole 40. Gases generated during the cut-off in arc chambers 24, thus preferably are routed from the release device 7 and from any possible mounting supports, such as DIN rail, for example.

According to the first alternative implementation of the degassing channels 38, 42, respectively, the first and second arc chambers 24 are of unequal length, with the quenching gases passing in the first exhaust duct, able to suck the gases flowing in the second channel due to the Venturi effect.

Preferably each part of the housing 12 formed with an internal layout that provides a relatively stable position of the various elements entering into the composition of the tripping mechanism 20, in particular the two symmetric cases for each of the arc chambers 24, and a circular Central casing for embedding the rod 26.

According to the private variant of the invention, as specifically described in the patent application France, registered in the name of applicant, entitled "Functional spacer for separating the cartridges in a molecules breaking device and circuit breaker", single pole units 10 are assembled by strips 46 formed for the I double cavity 48. Preferably this structure allows to embed each side of the discharge channel 42 partially in the gasket 46. In particular, as shown in Fig. 4, the strip 46 is made of molded plastic and mainly contain the Central partition 52, is configured to be parallel to the large panels 14 NC unit 10. The combination of the two strips 46 thus defines a cavity 56 in which the single pole breaking unit 10. Preferably, two opposite bottom edges 54 of each strip 46 at the bottom of the cavity 56 with its rear essentially tightly when attaching pads 46 to each other. Each strip 46 includes layout, allowing to partially delineate second lateral suction channels 42. Preferably each side of the discharge channel 42 is partially treated in the large outer panel 14 of the housing 12 of the cartridge 10, between the two output holes 44A, 44B and the corresponding element 68, forming potraviny and/or the speaker circuit, on the Central partition 52. When combining and fastening strip 46 on the cartridge 10 is made, the gases can then be directed from the outlet 44A in the upper hole 44B along the septum 52.

Single-pole breaking units 10 is arranged to actuate at the same time, and to this end is connected at least one rod 30, in particular at the level of the rod 26 and, for example, through holes 32, forming stops rolling contact bridge 22. In a preferred variant implementation uses a single drive rod 30, with each part of the housing 12 includes a hole 34 in the form of an arc of a circle, which allows, at least, to result in the movement of the rod 30 passing through the latter, between the position of the current flow and open position.

According to the private variant of the invention, as shown in Fig. 5-7 mentioned at least second gas exhaust channel 42 passes, at least one decompression chamber 43 containing at least one wall, covered with a metal sheet 85.

The inner wall is coated with the said sheet, preferably forms part of a decompression chamber 43. This metal sheet 85 forms a trap for particles, which serves, on the one hand, to capture metal particles formed by disabling that, on the one hand, to provide thermal protection plastic parts, located farther downstream from the trap, and on the other hand, reduce the temperature of the quenching gas. Trap for particles further protects the plastic part of the channel located behind the said at least one metal is lifescope sheet 85, and increases the tightness of the sealing surface of the housing 12.

The use of at least one metal sheet 85 at least partially covering the inner wall of the gas exhaust channel, provides reliable grip spherical particles of molten steel and copper, resulting from erosion of switches, contacts and conductors when current is switched off. Mentioned, at least one metal sheet has a minimal thickness that does not allow the molten spherical particles to pass through it thoroughly. Minimum thickness is preferably from 0.3 to 3 mm and can be adjusted in accordance with the allocated energy when disconnected.

Mentioned, at least one metal sheet 85 is made of steel, copper or an alloy based on iron.

As shown in Fig. 9A, the inner wall of the discharge channel, covered the mentioned at least one metal sheet 85 trap particles, forming an angle α of 45°-140°, relative to the direction of flow of gases. Wall serving as a support mentioned at least one metal sheet, preferably lies in a plane perpendicular to the direction of flow of the quenching gas (α=90°). In practice, by placing the aforementioned at least one metal sheet 85 by distorting the linear path or a curved path of the gas stream, pressure and adhesion of particles to the sheet can be increased due to the centrifugal force.

Mentioned, at least one metal sheet 85 at least partially covers the inner surface of the tailrace. The metal sheet passes along the longitudinal axis of the channel. The total length L of the inner wall coated with the aforementioned at least one metal sheet 85, in the direction of flow at least equal to the square root of the smallest cross-sectional area of the stream's channel, measured in the direction of said sheet. To reduce the temperature of gases it is desirable to maximize the length. The minimum required length is determined by the following equation:

L≥√S min,

where S min - the minimum cross-sectional area of the discharge channel.

Mentioned, at least one metal sheet 85 additionally passes through the inner perimeter P of the discharge channel in the direction perpendicular to the direction of flow. The minimum required distance I, which passes the said sheet is determined by the following equation:

Pm/10≤I≤Pm,

where Pm is the mean value of the perimeter of the suction channel, which is a trap for particles.

Mentioned decompression chamber preferably is located as close as possible to the exit arc Kama is s. According to the private version of the implementation of the decompression chamber is located below the bottom wall of the arc chamber 24.

According to the second variant implementation of the gas exhaust channel 38 includes a rotary valve 45, made with the possibility of bringing in rotation by the flow of quenching gas. Rotation of the valve from the first position to the second position is configured to actuate the release means of the switching device to cause disconnection of the contacts.

The interrupter circuit 100 according to the invention made in this way makes it possible to satisfy the following seemingly contradictory industrial requirements:

the same structure can be used for the entire range of current up to 800 A, through the use of a double opening with the aid of the moveable contact bridge 22;

- reliability tripping mechanism 20 and optimization of the latter is ensured by the use of proven solutions;

- release device 7 can be connected through the lower part of the terminal block of the switching device 600 load side, which facilitates access to the connecting screws through the reverse direction of rotation of the rotary contact bridge 22;

- provided full interchangeability release device 7 that p is allowed to spend significantly delayed differentiation of the switching device 100;

- the front part 9 of the switching device 600 is located in the center, in particular at a distance of 42.5 mm, due to the reverse rotation direction in NC blocks 10, which allows the use of cabinets symmetrical front overhead plate;

- quenching gases are not displayed next to the release device 7, which limits pollutant emissions for this element, which may be sensitive to them, especially in its electronic version, and frees space;

o quenching gases no longer occurs under the connecting elements 4, 5 of the circuit breaker 100 of the circuit, which limits the risk of arc overlap when open.

1. SPST NC block containing:
rotary contact bridge (22),
at least one fixed contact (41, 51), working together with the contact bridge and connected to the current-carrying conductor (4, 5),
rotating rod (26) having a transverse hole (21) in which the contact bridge is placed with a gap, while the contact bridge stands on each side of the rod (26), and a turning rod (26) is inserted between the two side panels (14) single-pole breaking unit, while the side panels are essentially parallel to each other,
two sealing flange (27), placed respectively between the radial surfaces turning the rod (26) and side panels (14) to ensure the tightness of the inner space to outer space single-pole breaking unit,
- at least one arc chute (24), built with the open space of the contact bridge (22),
characterized in that the rotary rod (26) includes at least one channel (29), directly connecting through the receiving hole (21) and a radial surface, so that the quenching gases can flow directly through the said channel, at least one sealing flange (27) to hold him to one of the side panels (14) to achieve tightness.

2. Single-pole breaking unit under item 1, characterized in that the rotary rod (26) has two channels (29), respectively connecting the transverse receiving hole (21) and a radial surface, so that the quenching gases can flow directly through the aforementioned channels to the sealing flanges (27), to press them to the side panels (14) to achieve tightness.

3. Single-pole breaking unit under item 1, characterized in that the rotary rod (26) includes a through channel (29), passing directly through the rotary rod (26) from the first radial surface to the second radial surface.

4. Single-pole breaking unit under item 3, wherein the through channel (29) has a longitudinal axis parallel to the longitudinal axis of the rotary rod (26).

5. Single-pole breaking unit is .4, characterized in that the through channel (29) has a longitudinal axis oriented along the longitudinal axis of the rotary rod (26), so that the quenching gases could exert an axial force being oriented along the longitudinal axis of the said rod, and distributed evenly on the sealing flanges (27).

6. Single-pole breaking unit according to any one of paragraphs.1-5, characterized in that the sealing flanges (27) contain the lateral cheeks, at least partially covering the longitudinal surface of the rotary rod (26).

7. Single-pole breaking unit under item 6, characterized in that the side cheeks partially closed cross hole (21) in which the rod (26).

8. Single-pole breaking unit under item 6, characterized in that the side cheeks are located around the cylindrical perimeter of the sealing flange (27).

9. Single-pole breaking unit under item 7, characterized in that the side cheeks are located around the cylindrical perimeter of the sealing flange (27).

10. Single-pole breaking unit according to any one of paragraphs.1-5, 7, 8, 9, characterized in that the sealing flanges (27) contain at least one eccentric passing hole (32), intended for the passage of a connecting rod (30) for the mechanical fastening of several rotary rod (26) to each other, with the connecting article shall rgen (30) is controlled mechanism, common to a set of several single-pole breaking units.

11. Single-pole breaking unit under item 6, characterized in that the sealing flanges (27) contain at least one eccentric passing hole (32), intended for the passage of a connecting rod (30) for the mechanical fastening of several rotary rod (26) to each other, with the connecting rod (30) is controlled by a mechanism common to a set of several single-pole breaking units.

12. Single-pole breaking unit according to any one of paragraphs.1-5, 7, 8, 9, 11, characterized in that it contains:
- a pair of stationary contacts (41, 51), each stationary contact works in conjunction with the rotary contact bridge (22) and the current-carrying conductor (4, 5);
two interrupter chamber (24), respectively, communicating with the open space of the contact bridge (22),
each arc chamber (24) is connected at least with one channel (38, 42) o quenching gases, these output channels facing the body panel (12) single-pole breaking unit (10) on the line-side and pad-side line is the opposite of the other panels, with the possibility of placing in contact with the release means (7).

13. Single-pole breaking unit under item 6, trichosis fact, what it contains:
- a pair of stationary contacts (41, 51), each stationary contact works in conjunction with the rotary contact bridge (22) and the current-carrying conductor (4, 5);
two interrupter chamber (24), respectively, communicating with the open space of the contact bridge (22),
each arc chamber (24) is connected at least with one channel (38, 42) o quenching gases, these output channels facing the body panel (12) single-pole breaking unit (10) on the line-side and pad-side line is the opposite of the other panels, with the possibility of placing in contact with the release means (7).

14. Single-pole breaking unit under item 10, characterized in that it contains:
- a pair of stationary contacts (41, 51), each stationary contact works in conjunction with the rotary contact bridge (22) and the current-carrying conductor (4, 5);
two interrupter chamber (24), respectively, communicating with the open space of the contact bridge (22),
each arc chamber (24) is connected at least with one channel (38, 42) o quenching gases, these output channels facing the body panel (12) single-pole breaking unit (10) on the line-side and p the view from the side line is the opposite of the other panel, made with the possibility of placing in contact with the release means (7).

15. Single-pole breaking unit under item 12, characterized in that the channels (38, 42) o quenching gases are connected to each other in the common passage, facing the body panel (12) single-pole breaking unit (10) on the side lines.

16. Single-pole breaking unit under item 13 or 14, characterized in that the channels (38, 42) o quenching gases are connected to each other in the common passage, facing the body panel (12) single-pole breaking unit (10) on the side lines.

17. Single-pole breaking unit under item 12, characterized in that the channels (38, 42) o quenching gases, respectively, the first and second arc chambers (24) are of different length, thus extinguishing gases passing in the first exhaust duct, able to suck the gases flowing in the second channel due to the Venturi effect.

18. Single-pole breaking unit under item 16, characterized in that the channels (38, 42) o quenching gases, respectively, the first and second arc chambers (24) are of different length, thus extinguishing gases passing in the first exhaust duct, able to suck the gases flowing in the second channel due to the Venturi effect.

19. Single-pole breaking unit under item 12, characterized in that at least Odie the exhaust channel (42) interrupter chamber (24) passes, at least one decompression chamber (43), containing at least one interior wall, covered with a metal sheet (85).

20. Single-pole breaking unit according to any one of paragraphs.13, 14, 15, 17, 18, characterized in that at least one suction channel (42) interrupter chamber (24) passes at least through one decompression chamber (43), containing at least one interior wall, covered with a metal sheet (85).

21. Single-pole breaking unit under item 16, characterized in that at least one suction channel (42) interrupter chamber (24) passes at least through one decompression chamber (43), containing at least one interior wall, covered with a metal sheet (85).

22. A switching device (600) containing at least one single-pole breaking unit (10) according to the previous paragraphs.1-21, characterized in that it comprises a pin drive mechanism (8), with at least one NC block is made with the ability to connect, on the one hand, to release the device (7) at the level of the terminal block (5) load side, and on the other hand, to protect the current line-level terminal block (4) on the load side.

23. The circuit breaker (100) circuit containing a switching device (600) according to p. 22, otlichalis the same time, that it contains a release device (7) connected to terminal strips (5) of the switching device (600), located on the load side.



 

Same patents:

FIELD: electrical engineering.

SUBSTANCE: arc suppressor contains an arc suppression chamber (21) formed by a package of de-ionising plates (22), an arc generation chamber (11) delimited by the first side wall (12) and the second side wall (13) and a means for removal of gases generated during electric arc occurrence, the means containing a removal channel (31) positioned behind the second side wall and connected with at least one exchange space (24). The arc suppression chamber contains permanent magnets, at least part of them placed behind the first side wall (12). The removal means has a hole formed partially in the second side wall (13) and opening to the arc suppressor outside.

EFFECT: enhanced effectiveness of arc suppression without increase of the commutation device volume.

10 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: switching device body comprises two sides with screw clamps for external load, with current splitters, a mechanism of free splitting and a contact device. A body has a path of an electric arc with two buses of electric arc displacement. Between end sections of buses there is an arc-quenching chamber from a group of arc-quenching plates, to which a chamber adjoins to blow an arc with a hole for arc blowing. Between an arc-quenching chamber and an arc-blowing chamber there are solid guide ribs, and inside the arc-blowing chamber there are solid walls shaped to body sides. A hole for arc blowing is arranged on the plane formed by a plane arranged at the angle α<90° to the setting plane of the body. Guide ribs shaped to one and the other side of the body are arranged as a whole, at least with some of solid walls shaped to the body side. At least some of the walls shaped to one and the other side of the body have sections, which are arranged in parallel to the setting plane of the body, and sections are arranged perpendicularly to the setting plane of the body.

EFFECT: higher reliability of a switching device due to elimination of arc blowing hole closing with dirt and dust particles, as a result of higher intensity of ionised gases cooling without increased dimensions of a body.

8 dwg

FIELD: electricity.

SUBSTANCE: electric commutation device is intended for attachment to a fixation support and contains at least one electric commutation module (2, 3) and at least one module (1) having an additional electric function, in particular - that of differential protection. At least one of the additional modules (1) is located close to at least one commutation module (2, 3). One or every commutation module (2, 3) contains an arc-extinguishing chamber (7, 8). The arc-extinguishing chamber (7, 8) of the module (2, 3) located opposite the additional module (1) has a surface (11, 12) curved relative to the arc-extinguishing chamber inner part to create a space (E, F) inside the chamber that ensures the possibility of accommodating part of the additional module volume therein (1). The ends (13, 14, 15 and 16) of the arc-extinguishing chamber (7, 8) encompass the additional module (1) volume.

EFFECT: improvement of the device operating characteristics without increase of it overall width.

10 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: arc chute (4) comprises an arc-quenching chamber (21) formed by a package of deionising plates (22), and an arc-generating chamber (11) restricted with the first and the second flanges (12, 13), besides, the arc-quenching chamber comprises permanent magnets, at least partially arranged behind the first flange (12). The arc-generation chamber (11) comprises a higher induction section (31), in which the arc moves towards the arc-quenching chamber by the first part (32, 33) of permanent magnets, and a diverging section (51), in which the arc diverges to the first flange by the second part (52) of the permanent magnets, besides, the magnetic field in the longitudinal average plane developed by the second part, is substantially weaker than the field developed by the first part. An automatic circuit breaker is also disclosed, comprising opened contacts (1, 2) and the arc-quenching chamber described above.

EFFECT: improved reliability of arc quenching and current interruption.

11 cl, 2 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to arc control chamber 1 for automatic circuit breakers fitted onto circuit breaker base to envelope breaker movable contact end trajectory by set of arc suppressor plates 2 and spark plates 3 arranged ledge-like. Arc control chamber 1 consists of two-component box comprising housing 4 with arc suppressor plates 2 and spark plates 3, cover 5 with exhaust channel 6 is tightly attached to box sides. Perimetric cutout 7 is arranged at the beginning of channel 6 on interface of two-component box to receive at least one temporary filler 8 with holes. Said perimetric cutout 7 is made in cover 5 and has damping sides and lateral guide surfaces and at least one thrust ledge 13 for filler 8.

EFFECT: modular-design arc control chamber with no additional connectors and controlled arc suppressing conditions and efficient outburst of plasma on cutting off shot-circuit current.

3 cl, 2 dwg

Arc control chamber // 2371800

FIELD: electrical engineering.

SUBSTANCE: chamber comprises two isolated LH and RH sets of metal plates separated by air gap. It comprises also first group of RH and LH sets of insulating plates separated by air gap. Note here that metal plates seat in symmetry with the axis passing between LH and RH sets of aforesaid plates, the upper LH and RH plates being interconnected by current conducting bus. In compliance with this invention, second group of LH and RH sets of plates are additionally introduced. Note here that LH and RH sets of insulating plates of first and second group are jointed to LH and RH sets of metal plates to make air gaps aligned and allowing formation of two-way through cooling channels perpendicular to electric arc.

EFFECT: intensive arc cooling, higher efficiency of suppressing induction currents.

2 dwg

FIELD: mechanical design of electric switching apparatuses and method for their assembling.

SUBSTANCE: proposed electric switching apparatus has arc-control casing designed to accommodate at least one pole arc-control unit that incorporates two laminated arc-control units disposed either side of movable contact bridge along horizontal axis. Arc-control casing has first member incorporating base formed by first horizontal side of switching apparatus to organize chamber that has space for first laminated arc-control unit and second member connected to first one; second member has base formed by second horizontal side of switching apparatus opposing first one to form chamber that has space for accommodating second laminated arc-control unit.

EFFECT: enhanced mechanical strength and tightness of switching apparatus at superhigh gas pressures, facilitated assembly and reduced time required for this procedure.

15 cl, 7 dwg

Arc-control device // 2306629

FIELD: electrical engineering.

SUBSTANCE: proposed arc-control device that can be used in high-speed circuit breakers for overload and short-circuit protection of electrical equipment, for instance that of DC consists, is made in the form of arc chute that has external walls with arc-control horns between them and deion grids tilted through certain angle to one another and assembled of steel plates with air gaps between them. Flame-retardant grids are installed along deion grids at arc chute outlet. Holes are provided in external walls of arc chute in vicinity of deion grids. Provision is made for regulating aerodynamic factors occurring in the course of arc quenching due to elimination of ionized gas flow toward circuit-breaker contact group.

EFFECT: reduced size of arc chute, enhanced switching capacity of high-speed circuit breaker.

1 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: modular electrical apparatus (10) has a connecting device (50, 60) for connection with an additional modular electrical apparatus (70). The apparatus (10) has a closed housing (20), and the connecting device (50, 60) comprises: a driven element (80) which can slide along a direction (M1, M2) between a working blocking position and a working opening position for electrical apparatus (10, 70); and a connecting element (90) which can slide along a direction (A1, A2) of the connection between a working connection position and a working disconnection position for electrical apparatus (10, 70). The direction (A1, A2) of connection is transverse relative the direction (M1, M2) of movement. The connection device (50, 60) also includes guide means (92, 94), having at least a first (92) guide plane for interaction with the connecting element (90) so as to cause the element (90) to slide along the direction (A1, A2) of connection. The first guide plane (92) is inclined relative the direction (M1, M2) of movement and the direction (A1, A2) of connection.

EFFECT: enabling fast and easy rigid and strong connection without using tools.

19 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: medium voltage breaker has an electronic safety and control unit (1), having a base (2) which is fastened to the breaker. The base (2) has a main housing (21) with a fastening means (210) for fastening to the breaker and a removable unit (3). The first side (22) of the main housing (21) has a closed space (220) which includes connections (221) with the breaker and its internal equipment. The second side (23) of the main housing (21) has a plurality of first means (231) for power and/or signal connection. The removable unit (3) has a cover (31). The first part (310) of the cover (31) accommodates one or more intelligent electronic devices; the second part (320) of the cover (31) is detachably connected to the base and has a plurality of second means (321) for power and/or signal connection, which are connected to the first means for power and/or signal connection.

EFFECT: design of a medium voltage breaker with a safety and control function, which is directly built into the board of the breaker, which broadens functional capabilities and increases technological effectiveness of the breaker.

12 cl, 10 dwg

FIELD: electrical engineering.

SUBSTANCE: compartment (4) for protection and insulation of electric switches (20) contains a framework (32) the shape whereof allows of its installation on the insertable panel (24) of switching contacts (20) so that to prevent access to parts that are energised and located close to the contacts insertable panel (24). The framework incorporates place for the protective shell (36) capable to accommodate the contacts panel (24) and the switch (20); in addition, the framework (32) contains a closing cover that closes access to the protective shell (36) place; the said cover is mechanically separated from the electric board closing door. The switch unit contains the compartment (4), the insertable contacts panel and a switch electrically connected to the insertable contacts panel, the compartment positioned between the insertable contacts panel and the switch.

EFFECT: simplifying and improving reliability.

15 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: invention relates to a device of an electronic splitter, which may be built into existing distribution devices and which acts at its contacts with the help of an inbuilt electromagnetic actuating mechanism (54), which is additionally in the electronic module for optimisation of disconnection of the automatic circuit breaker, and also to the body for the device of the electronic splitter, design of which is optimised for the purposes of maximum compactness and integration of available functions.

EFFECT: development of a splitter device, meeting limitations in respect to spatial arrangement, which may replace a device of magnetic or thermomagnetic splitter in an existing automatic circuit breaker.

34 cl, 14 dwg

Switching unit // 2417476

FIELD: electricity.

SUBSTANCE: invention relates to a switching unit (1), in particular, a linear protection circuit breaker and/or a leakage current protection circuit breaker with a body (2) and with switching contacts to close and/or open at least one current circuit. Besides, an opening device is provided for automatic opening of switching contacts, and the body (2) has at least frontal side (3), where a cap (4) is fixed, which has a fixing ledge (11), which engages with the fixing slot (10) arranged on the body. The body (2) has a body ledge (32), which in at least one area (33) of the base changes into the body (2). In the zone of base area (33), in particular, in the direct transition of the body ledge (32) into the body (2), in the body (2) there is at least one safety slot (35), besides the cap (4) engages with the safety slot (35) to form a safety joint (34).

EFFECT: invention provides the possibility of simple and efficient manufacturing, fast, flexible and cost-efficient compliance of the device with changing requirements of the market or consumers with the help of configuration of only the appropriate cap, using one and the same body then.

11 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: circuit breaker frame includes the following: many single frames having many internal sockets, and connecting assembly connected between two adjacent single frames among single frames and connecting two single frames to each other. Connecting assembly includes the following: connecting element intended for connection of two adjacent single frames; fixing element connected to connecting element and providing the state of connection of two single frames; connecting device for connection of connecting and fixing elements.

EFFECT: reducing production costs, simplifying the production process and reducing the production time.

10 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: rectangular opening is made in the panel of electrical device (1) to be installed in electrical distribution board. Electrical device (1) includes box-type housing (2) with front part (3) protruding from its external surface (4) and having the first size (H1) equal to the side of rectangular opening in order to provide the possibility for front part (3) to enter the above opening. According to the invention, front part (3) includes mounting element (5) which is connected to the above surface (4) of box-type housing (2) so that it can be removed in order to change configuration of front part (3) by changing the first size (H1).

EFFECT: enlarging operating capabilities.

8 cl, 2 dwg

FIELD: electrical engineering.

SUBSTANCE: device for connecting a dowel bar of a circuit-breaker comprises a connecting link for connection with an actuating mechanism, inserted into the housing of a movable contactor, dowel bar, inserted into the housing for fixing the connecting link, and a supporting element for the dowel, which has an elastic section which allows for its elastic deformation and detachable interlocking with the housing through the elastic section, providing support for the dowel bar.

EFFECT: reduced number of components for supporting the dowel bar, meant for fixing the connecting link of the actuating mechanism, which makes easier assembling and dismantling.

4 cl, 6 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering and may be used in power switches and power circuit breakers. The switching device is comprised of a cover and body frame and equipped with a switch board module being positioned between separating body frame partitions by means of side ribs. There are sliding grooves (5,6) in the body frame (1) partitions (2) provided for the above-mentioned side ribs (4) of the switch board module. The sliding grooves pass to the upper semi-grooves (7, 8). One of the upper semi-grooves (7, 8) is provided with fixing extension (9) on its wall to be connected with one cavity (10) formed on the body of each side rib (4).

EFFECT: simplified assembling, improved fixation of side ribs, in particular, and maximum use of body area.

3 dwg

The invention relates to electric circuit breaker with molded from insulating material housing containing a first chamber, which includes a drive mechanism, and a second camera including an electromagnetic actuator, and razmykaetsya contacts associated with the arc chamber, and the said actuator has a magnetic circuit and contains:

- core running the excitation coil,

the first air gap in which is placed a movable contact arm so that it occupies its original position when closed contacts and an active position when open contacts when the current exceeds the set threshold value,

- rotating the movable body, interacting with the pole pieces of the magnetic circuit with the formation of the second air gap opposite the first air gap,

and a switching mechanism associated with the movable body, to influence the contact lever in a disconnecting direction after the magnetic attraction of the rolling body to the pole tips

FIELD: electricity.

SUBSTANCE: application: in the field of electrical engineering. The invention relates to a switching device, comprising the following components: the first unit (1), comprising a driving organ (10), which may take idle position and working position; the second unit (2), installed on the first unit (1) and comprising a movable bridge (22) with movable contacts (221), acting relatively to fixed contacts (201) between the closing position and opening position, to accordingly close or open electric circuit depending on the position of the driving organ (10); at the same time: the movable bridge (22) is arranged as capable of rotation around the axis of rotation (A) and may take the third position for opening of an electric circuit, when the first unit (1) is mechanically disconnected from the second unit (2).

EFFECT: higher reliability and downsizing.

12 cl, 7 dwg

FIELD: physics; control.

SUBSTANCE: present invention pertains to electrical machine building, particularly to apparatus for controlling electrically propelled vehicles. The controller contact system contains immovable contacts, fixed on an insulating case, movable contacts, fixed on a bridge contact holder, which interacts with one arm of a turning two-arm lever, fitted in a case on an axis with possibility of interaction of its other end with a driving element using a roller, as well as comprising a spring. The bridge contact holder is made in form of a metallic U-shaped plate with contacts, the sides of which are trapezium shaped. In the middle on the bends of the U-shaped plate, there are openings for fastening one end of the spring, the other end of which fixed to the case by a pin. The sides of the bridge contact holder lie on an axis, located on the arm of the turning two-arm lever with possibility of freely rotating in the opening of this arm. The axis in the arm of the turning two-arm lever, openings on the U-shaped plate for fastening the spring and fasting its second end to the case using a pin lie on a single line, which guarantees simultaneous touching and separation of contacts during commutation.

EFFECT: increased reliability of the controller contact system and its reduced size.

2 dwg

FIELD: electric engineering, applicable for provision of functioning of controlled systems and mechanisms.

SUBSTANCE: the device has an electromagnet, contactor having a stationary commutating block and electroconducting shunt. The electromagnet movable armature is installed for axial action on the contactor electroconducting shunt. The stationary communicating block of the contactor is formed by the dielectric part and the electroconducting surface including the working sections of the contacts of the stationery commutating block facing the working sections of the electroconducting shunt. The electroconducting shunt is formed by the armature and contact parts. The armature part of the electroconducting shunt includes the lobed arms, and the contact part - the working sections of the contacts positioned on the planes of the lobed arms of the armature part. The lobed arms of the armature part of the electroconducting shunt are connected by means of the central block, they are positioned with a similar interval and uniformly spread along the generating line of its outer cylindrical surface.

EFFECT: enhanced durability and lowered price of production.

6 cl, 3 dwg

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