EP3022756A1

EP3022756A1 - On-load tap changer

Info

Publication number: EP3022756A1
Application number: EP14736676.9A
Authority: EP
Inventors: Klaus HÖPFL; Silke Wrede; Dieter Dohnal; Christian Kotz
Original assignee: Maschinenfabrik Reinhausen GmbH; Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Current assignee: Maschinenfabrik Reinhausen GmbH; Scheubeck GmbH and Co
Priority date: 2013-07-16
Filing date: 2014-06-24
Publication date: 2016-05-25
Anticipated expiration: 2034-06-24
Also published as: CN105378874A; DE102013107552B4; WO2015007473A1; JP2016524347A; JP6461132B2; UA119043C2; EP3022756B1; TR201904811T4; CN105378874B; DE102013107552A1; US9640341B2; US20160181025A1

Abstract

What is disclosed is: an on-load tap changer (1). The on-load tap changer (1) comprises a diverter switch insert (14) and a vacuum interrupter (15), which is rotatable about an axis (A) and to which at least one switching module (24) is assigned. The switching module (24) comprises at least one switching segment (25) fastened on the vacuum interrupter (15) and an associated resistor arrangement (27). An actuating arrangement (41) is assigned to the switching module (24) on an inner wall (20) of an oil tank (18). In accordance with the invention, the resistor arrangement (27) has a plurality of resistor elements (28). In addition, the actuating arrangement (41) comprises a plurality of physically identical actuating elements (50), which are assigned to the switching module (24) on the inner wall (20) of the oil tank (18). Depending on the arrangement of the at least one physically identical switching segment (25), the physically identical resistor arrangement (27) and the mounting of the plurality of physically identical actuating elements (50) on the inner wall (20) of the oil tank (18), the on-load tap changer is therefore either a selector switch (1) or a diverter switch (1), in accordance with the invention.

Description

OLTC

The present invention relates to an on-load tap-changer. The on-load tap-changer comprises a diverter switch insert, a switching tube rotatable about an axis, to which at least one switching module is assigned. The switching module comprises at least one switching segment attached to the switching segment and a resistor arrangement. The switching module is assigned to an inner wall of an oil vessel at least one actuator assembly.

On-load tap-changers (abbreviated to OLTC) are well-known and commonly used in the prior art and serve for the uninterrupted switching between different winding taps of tapped transformers.

Such on-load tap-changers are divided into load selectors and diverter switches with selectors. In a diverter switch with selector, as disclosed for example in German Patent DE 100 55 406 C1, the selector, consisting of a fine selector and possibly a preselector, is arranged below the diverter switch. The selector is used for powerless selection of the respective new winding tapping of the tapped transformer to be switched to. The diverter switch is used for subsequent rapid and uninterrupted switching from the wired to the new, preselected winding tap, which is to beschaltten.

Load selectors, as described for example in German Patent DE 28 33 126 C2, as well as the diverter switch with selector serve to switch the taps of the control windings of these tapped transformers under load and thus compensate for voltage changes in the consumer targeted. By eliminating the separation of the diverter switch from the selector, load selectors are less expensive to produce. Load selectors have a limited range of use, such as by the limited possible number of stages.

Both types of on-load tap-changers are operated by a motor drive during the switchover. By the motor drive an output or input shaft is moved, which raises a power storage. If the energy storage fully wound, ie strained, he is unlatched, releases his energy abruptly and operated in the period of milliseconds (ms) a diverter switch insert, which performs a specific switching sequence during load switching. In this case, different switch contacts and resistor contacts are actuated in a specific time sequence. The switching contacts serve for the direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, ie bridging by means of one or more switching resistors. Advantageously, vacuum interrupters are used as switching elements for load switching. This is due to the fact that the use of vacuum interrupters for load switching prevents arcing in the oil and thus the oil contamination of the diverter switch oil, such as in German Patent DE 195 10 809 C1 and DE 40 1 1 019 C1 and German Patent Application DE 42 31 353 A1 and DE 10 2007 004 530 A1.

A disadvantage of these on-load tap changers are the centrally rotating gear and the actuators and the fixed contact and resistor assemblies. This is due to the fact that complex support elements are necessary, for example, for the switching segments or the resistor arrangement and these elements must be arranged differently in the load selector. Furthermore, flexible contact or current connections are necessary. In addition, some components must be manufactured so accurately and distortion-free that they can be installed in the on-load tap-changer. If these components are manufactured using an injection molding process, a separate injection mold must be produced for each of the different components, which increases the cost of an on-load tap-changer.

Thus, the German patent application DE 1 231 805 B already discloses a tap selector for tap changers of control transformers, which is preferably arranged below a diverter switch and is constructed according to a modular principle, so that the tap selector for various tap changers is operational.

The object of the invention is to provide a simple and inexpensive on-load tap-changer, which uses a large number of identical parts with regard to load selectors or diverter switches, so that different functionalities of the on-load tap-changer can be realized.

This object is achieved by on-load tap-changer comprising the features of claim 1. The on-load tap-changer according to the invention comprises a diverter switch insert and a switching tube rotatable about an axis. The switching tube is assigned at least one switching module. In this case, the switching module of the on-load tap-changer comprises at least one am Switching tube fixed switching segment and a resistor assembly. On an inner wall of an oil vessel, the switching module is associated with an actuating element.

According to the invention, the at least one resistance arrangement has a plurality of individual and structurally identical resistance elements. It is further provided that the actuating arrangement comprises a plurality of identical actuating elements which are assigned to the switching module on the inner wall of the oil vessel. In this case, depending on the arrangement of the at least one identical switching segment, the at least one resistor arrangement and the mounting of the plurality of identical actuating elements on the inner wall of the oil tank of the on-load tap-changer either a load selector or a diverter switch.

Since the individual components of the switching modules can be used both in a load selector and in a diverter switch, this on-load tap-changer creates a large number of identical parts. These can then be assembled according to a modular principle, as further described below. By using these common parts can save immense manufacturing costs, so that a cost-effective on-load tap-changer is created. In a first embodiment of the invention, the identical resistance elements each sit in a sector-shaped carrier and thus form a structurally identical resistor arrangement, which is arranged in accordance with the load selector or diverter switch to allow the functionality of the load selector or diverter switch. In a further embodiment of the invention, the identical actuating elements for attachment to the inner wall of the oil vessel have a plurality of holes and a plurality of openings. Furthermore, the identical actuators have formed an upper cam and a lower cam. In particular, each switching segment may comprise two vacuum interrupters, each associated with an actuating lever, and a plurality of movable contacts for the diverter contact and a plurality of movable contacts for the tap contacts at the diverter switch or for the selector contacts at the load selector. In a preferred embodiment of the on-load tap changer according to the invention, in the switching module the sector-shaped carrier of the structurally identical resistor arrangement, a switching segment and a high-mass element are arranged around the axis of the switching tube arranged. In addition, corresponding to the inner wall of the oil pan actuators are mounted in such a way that the on-load tap-changer according to the invention in this embodiment is a load selector. In particular, in this embodiment of the on-load tap changer, as a load selector, the switching tube may support a bracket which supports a switching segment, a resistor assembly, and the high-mass member radially about the axis of the switch ear.

In a further preferred embodiment of the on-load tap-changer according to the invention, the sector-shaped carriers of several structurally identical resistor arrangements are arranged in such a way around the axis of the switching tube in the switching module that the resulting arrangement of the resistance arrangements surrounds the switching tube. In the direction of the axis of the switching tube are spaced apart from the array of resistor arrangements three switching segments around the switching tube around. In addition, corresponding actuating elements are mounted on the inner wall of the oil vessel such that the on-load tap-changer according to the invention is a diverter switch which is suitable for interacting with a separate selector.

In particular, in this embodiment, the on-load tap changer can carry, as a diverter switch, the switching tube a first holding device for the resistance arrangements, so that these surround the switching tube. In this case, the switching tube carries in the axial direction a second holding device, which holds the three associated switching segments around the switching tube around. Regardless of whether the on-load tap-changer is a load selector or diverter switch with selector according to the invention, each operating lever of the selector segment carries a roller which cooperates with the upper control cam and the lower control cam of the actuators, respectively. Likewise, at least one diverter contact and at least one stage contact or the selector contact can be connected to an inner surface of each actuating element via a respective holding element and held on an outer wall of the oil container. In this case, then an electrical connection element of the respective Ableitkontakts or tap contact is guided through a shield cap to the outer wall of the oil vessel.

In another embodiment, the diverter contact is a continuous slip ring. This results from the arrangement of at least the identical switching segments and the identical resistance arrangements, so that the on-load tap changer is a load selector and the diverting contact is formed as a continuous diverter ring or slip ring.

In a further embodiment, the diverting contact consists of at least one separate slip ring segment. This results from the arrangement of at least the identical switching segments and the identical resistor arrangements, so that the on-load tap changer is a diverter switch and the diverting contact is a ring segment or a slip ring segment. In a further embodiment of the invention, a flywheel is mounted on the switching tube. Preferably, the flywheel consists of a first part flywheel and a second part flywheel. The shift tube holds the first part flywheel and the second part flywheel. The distribution of the flywheel in the first part of the flywheel and the second part flywheel facilitates their installation on the shift tube. Furthermore, the flywheel carries the listed above for load selector massive element.

In a further preferred embodiment, the load selector has three switching modules arranged on the switching tube along the axis, so that this is a three-phase load selector.

In another preferred embodiment, the diverter switch has three switching modules arranged radially on the switching tube around the axis, so that this is a three-phase diverter switch. Again, the switching tube holds the flywheel.

The flywheel, consisting of first partial flywheel mass and second flywheel mass, essentially serves to provide a corresponding mass so that the momentum transferred from the energy store to the switching tube effects a defined pivotal movement of the switch tube. This ensures that defined switch positions of the on-load tap-changer are set.

In the following, the invention and its advantages will be described in more detail with reference to the accompanying drawings. 1 shows a perspective view of an on-load tap changer according to the invention in the form of a three-phase load selector; Fig. 2 is a sectional view of the load selector according to the invention of Fig. 1;

Fig. 3 is a plan view of a sector-shaped carrier in which the identical

Resistance elements of the resistor assembly sit;

4 shows a perspective view of a single actuating element for the on-load tap-changer according to the invention;

Fig. 5 is a sectional view of a section of the on-load tap-changer

Actuators according to Figure 4, which are attached to an inner wall of the oil vessel.

Fig. 6 is a sectional view of the load selector along that shown in Fig. 1

Section line A-A;

Fig. 7 is a perspective view of a switching segment, with the corresponding

Control curves of the arranged on the inner wall of the oil vessel actuating element cooperates, wherein parts of the wall of the switching segment are omitted, to illustrate the internal structure;

Fig. 8 is a perspective view of the diverter switch insert of the three-phase

Lastwählers of Figure 1, wherein the three attached to the shift tube switching segments and the massive element can be seen and wherein the switching tube supports a first partial flywheel and a second partial flywheel mass of a flywheel;

Fig. 9 is another perspective view of the diverter switch insert of the three-phase

Lastwählers of Figure 1, wherein the three attached to the switching tube resistor assemblies and the two content on the shift tube Partschwungmassen are shown in FIG. 8.

Fig. 10 shows a perspective sectional view to illustrate the interior

Structure of an on-load tap changer according to the invention in the form of a three-phase diverter switch; and

Fig. 1 1 is a sectional view of the diverter switch along the drawn in Fig. 10 section line BB. For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the on-load tap changer according to the invention can be configured and thus do not constitute a final limitation of the invention.

1 shows a perspective view of a three-phase on-load tap changer or load selector 1 according to the invention. The load selector 1 has a drive 3, such as an electric motor, with a gear 5, which raises a power storage, not shown. Is the energy storage fully wound up, d. H. strained, he is unlatched, releases his energy abruptly and actuates a switching tube 15 of a diverter switch insert 14. The rotating switching tube 15 is supported in an oil vessel 18. The oil vessel 18 is closed at the top with a lid 19 and also carries a bottom 21st

The load selector 1 according to the invention has a first phase L1, a second phase L2 and a third phase L3, which are arranged one above the other in the oil vessel 18. Over the three phases L1, L2, L3 sits a preselector 37. In the view shown here electrical connection elements 38 are provided for preselector contacts on the oil vessel wall 17 of the oil vessel 18. Electrical connection elements 39 for step contacts 392 (see FIGS. 5 to 7) of the three phases L1, L2, L3 are likewise arranged on the load selector 1 in such a way that they engage through the oil vessel wall 17 of the oil vessel 18.

FIG. 2 shows a sectional view of the load selector 1 according to the invention with diverter switch insert 14 according to FIG. 1. The diverter switch insert 14 comprises a rotatable about an axis A switching tube 15. The switching tube 15 are assigned here three switching modules 24 according to the invention, d. H. Each phase L1, L2, L3 has a switching module 24. In this case, each switching module 24 of a load selector 1 comprises a switching segment 25 fastened to the switching tube 15 and at least one identical resistor arrangement 27, which comprises a plurality of individual and identically constructed resistance elements 28. These identical resistance elements 28 sit, as shown in Fig. 3, in a sector-shaped carrier 29 which forms the identical resistance arrangement 27 together with the resistance elements 28.

Further, as shown in FIG. 2, each switching module 24 is secured to an inner wall 20 of the FIG Oil vessel 18 associated with at least one actuator 50. Each actuating arrangement 41 comprises several separate and identically constructed actuating elements 50. The actuating elements 50 are preferably adapted to the contour of the inner wall 20 of the oil vessel 18 and substantially plate-shaped.

A single such actuator 50 is shown in a perspective view in FIG. For the attachment of the actuating element 50 to the inner wall 20 of the oil vessel 18, as shown in the following Fig. 5, the actuating element 50 has at least one bore 60 for the assembly and the passage of the electrical connection elements 39 of the step contacts 392 (see Fig. 5, 7 ) on. Furthermore, each actuating element 50 has at least one opening 62. The openings 62 are used to carry out at least two holding elements 31 for the diverter ring 391 (see FIGS. 5, 7, 10) and in the first phase L1 of the load selector in addition to a single electrical connection element (not shown) for the diverter ring 391. In addition, the actuator 50 has an upper cam 51 and a lower cam 52, which are used to actuate the vacuum interrupters 33, 34 shown in Fig. 7.

5 shows a sectional view of a section of the load selector with actuators 50 according to FIG. 4. The actuators 50 are fastened to the inner wall 20 of the oil receptacle 18. Here, the respective actuating element 50 via the at least two holes 60 (see FIG. 4) and the at least one opening 62 (see FIG. 4), each with a holding element 31 on the inner wall 20 of the oil vessel 18 is supported. The holding elements 31 are mounted in such a way that, in the embodiment shown here, a diverting ring 391 and two stepped contacts 392 are thus retained on the inner surface 56 of the respective actuating element 50. Other embodiments may also provide other arrangements of the diverter ring 391 and the diverter contacts 391 and the stage contacts 392, respectively.

Each of the step contacts 392 is in each case connected to an electrical connection element 39 which is guided to the outer wall 16 of the oil vessel 18. In particular, as shown here, the diverting contact is preferably a diverter ring 391.

FIG. 6 shows a sectional view along the section line AA of FIG. 1 of the load selector 1, wherein a plan view of the first phase L1 is shown. As shown here, sitting on the inner wall 20 of the oil vessel 18 for the first phase L1 to the contour of the inner wall 20 of the oil vessel 18 adapted actuators 50, which constitute the actuating assembly 41. The electrical connection elements 39 for the not shown here Step contacts 392 and the electrical connection element 68 for the diverter ring 391, not shown here, engage the outer wall 16 through the corresponding actuating elements 50 and through the oil vessel wall 17 of the oil vessel 18. The umbrella caps 30 on the outer wall 16 of the oil vessel 18 hold the on the inner wall 20 of the For this purpose, the electrical connection elements 39 for the step contacts 392 and the electrical connection element 68 for the diverter 391 via the holding elements 31 (not shown, see Fig. 5) with the associated umbrella caps 30 together such that the actuators 50 are supported on the inner wall 20 of the oil vessel 18. The umbrella caps 30 rest on the outer wall 16 of the oil vessel 18. Each of the actuators 50 has the upper cam 51 and the lower cam 52 (see FIG. 5) for cooperating with corresponding operating levers 45 of the switching segment 25 of the corresponding phase L1, L2, L3. Further, the switching tube 15 carries in each phase L1, L2, L3 a holder 40, in addition to the resistor assembly 27 and the switching segment 25 a massive element 36 are mounted radially about the axis A of the switching tube 15. In this case, the switching segment 25 is mounted with its movable contacts 29S for step contacts 392 and movable contacts 29A for deflecting contacts 391 (see FIG. 7) such that the rollers 43 of the actuating levers 45 interact with the corresponding upper and lower control cams 51, 52 of the actuating elements 50 to actuate two vacuum switching tubes 33, 34 in each switching segment 25. This is shown in Fig. 7 in a perspective view. Since all other reference numerals shown here have already been explained in the previous descriptions to the figures 1 to 6, a description will be omitted at this point.

As shown in further perspective views of the load selector 1 according to the invention in FIGS. 8 and 9, in a preferred embodiment this has a flywheel mass 35. This preferably consists of a first partial flywheel mass 351 and a second partial flywheel mass 352 and also carries the massive element 36. This massive element 36 and the flywheel 35 are needed to support the temporal movement of the switching operation, so that the rotation of the switching tube 15 causing triggering of the energy storage a defined circuit or defined setting of the individual switching states of the load selector takes place. It can be seen from FIGS. 8 and 9 that the diverter switch insert 14 consists of three identical switching modules 24. Each switching module 24 has mounted on the switching tube 15, the switching segment 25 and the resistor assembly 27. Fig. 10 shows a sectional view to illustrate the internal structure of an on-load tap changer according to the invention in the form of a three-phase diverter switch 1. The diverter switch 1 also includes a rotatable about an axis A switching tube 15. Again, the switching segments 25 and the individual combined in identical resistance arrangements 27 are identical Resistive elements 28 to be regarded as a switching module 24, which are also attached to the switching tube 15, as in the previously described to the previous Fig. 1 to 9 load selector. Each resistor assembly 27 has the plurality and the same resistance elements 28, which also sit here in a sector-shaped carrier 29 (see FIG. 3).

In the embodiment shown here, the diverter switch 1 are per switching module 24 three identical resistance arrangements 27, with sector-☐ carrier 29 and the identical resistance elements 28, arranged around the axis A of the switching tube 15 around that the arrangement of the identical resistor assemblies 27, the switching tube 15 encloses. The arrangement of the identical resistor assemblies 27 is spaced in the direction of the axis A of the switching tube 15 of the three switching segments 25, which are also mounted around the switching tube 15 around. As with the load selector 1, several actuators 50 are attached to the inner wall 20 of the oil vessel 18 of the diverter switch 1 according to the manner already described in Fig. 4 at the diverter switch.

Each of the switching segments 25 has a plurality of movable contacts 29 S for electrically contacting the selector contacts 84, which are identical to the contacts contacts 392 of the load selector of FIG. 7. Likewise, the switching segment 25 carries a plurality of movable contacts 29A for the Ableitkontakt 391, which is a ring segment of the diverter ring in this embodiment. The diverter 391 also functions as a guide segment. For this purpose, guide rollers 47 are provided on the switching segment 25, which engage above and below the guide segment and thus guide the switching segments 25 during the rotation of the switching tube 15.

The switching tube 15 of the diverter switch 1 according to the invention carries a first holding device 81 for the resistance elements 28, so that the resulting resistance arrangement 27 surrounds the switching tube 15. In addition, here in the axial direction, the switching tube 15 carries a second holding device 82, which supports the three switching segments 25 around the switching tube 15 around. Fig. 1 1 shows a sectional view of the diverter switch 1 along the drawn in Fig. 10 section line BB. To the switching tube 15, three identical switching segments 25 are arranged, each of which cooperates with an associated actuating element 50 on the inner wall 20 of the oil vessel 18. The three actuators 50 form the actuator assembly 41. As explained in the description of Fig. 4, each actuator 50 has an upper cam 51 and a lower cam 52. Each of the switching segments 25 includes two, not shown here, vacuum tubes, each with a Actuated lever 45 which carries a roller 43. The rollers 43 cooperate with the upper control cam 51 and the lower control cam 52. The switching module 24 comprises in the first phase L1, the second phase L2 and the third phase L3 in each case a switching segment 25 and a resistor arrangement arranged underneath 27. In each of the phases L1, L2 or L3, an actuating element 50 is provided which corresponds to the in Fig .4 shown has shape and is also used in the load selector 1 shown in Fig. 6. The electrical connection elements 85, 86 for the selector contacts 84 (see FIG. 10) and the electrical connection elements 68 for the discharge contact 391 engage through the actuators 50 and through the oil vessel wall 17 of the oil vessel 18 to the outer wall 16. The electrical connection element 68 of the respective Ableitkontakts 391 and the electrical connection element 39 of the respective step contact 392 are further guided through the respective umbrella caps 30 through to the outer wall 16 of the oil vessel 18.

LIST OF REFERENCE NUMBERS

1 on-load tap-changer, diverter switch, load selector

3 drive

5 gears

14 Diverter switch insert

15 switching tube

16 Outer wall of the oil vessel

17 oil tank wall

18 oil container

19 lids

20 inner wall of the oil vessel

21 floor

24 switching module

25 switching segment

27 resistor arrangement

28 resistance elements

29 sector-shaped carrier

29A movable contact for discharge contact

29S moving contact for step contact

30 umbrella cap

31 retaining element

33 vacuum interrupter

34 vacuum interrupter

35 flywheel

351 first partial flywheel

352 second partial flywheel

36 massive element

37 selection

38 electrical connection element for preselector contact

39 electrical connection element for step contact

391 Discharge contact, diverting ring, guide ring, ring segment

392 steps contact

40 bracket

41 actuator assembly

43 roll 45 operating lever

47 leadership role

50 actuator

51 upper control curve

52 lower cam

56 inner surface of the actuating element

60 hole

62 breakthrough

68 electrical connection element for discharge contact / discharge ring

81 first holding device

82 second holding device

84 dial contact

85 electrical connection element for selector contact

86 electrical connection element for selector contact

A axis

A-A cutting line

B-B cutting line

L1 first phase

L2 second phase

L3 third phase

Claims

claims

1 . On-load tap-changer (1), with one diverter switch insert (14)

with a switching tube (15) which can rotate about an axis (A) and is associated with at least one switching module (24), wherein the switching module (24) comprises at least one switching segment (25) fastened to the switching tube (15) and a resistance arrangement (27) and the switching module (24) is associated with an actuating arrangement (41) on an inner wall (20) of an oil vessel (18),

characterized in that

the at least one resistance arrangement (27) has a plurality of individual and structurally identical resistance elements (28),

the actuating arrangement (41) comprises a plurality of identically constructed actuating elements (50) which are assigned to the switching module (24) on the inner wall (20) of the oil vessel (18), and

depending on the arrangement of the at least one identical switching segment (25), the resistor assembly (27) and the assembly of a plurality of identical actuating elements (50) on the inner wall (20) of the oil vessel (18) of the on-load tap changer a load selector (1) or a diverter switch (1).

2. on-load tap-changer (1) according to claim 1, wherein the identical resistance elements (28) in a sector-shaped carrier (29) sit and thus form a structurally identical resistor arrangement (27).

3. on-load tap-changer (1) according to one of the preceding claims, wherein each of the identical actuating elements (50) for attachment to the inner wall (20) of the oil vessel (18) has a plurality of bores (60) and a plurality of openings (62) and an upper control cam ( 51) and a lower control cam (52) has formed.

4. on-load tap-changer (1) according to one of the preceding claims, wherein each switching segment (25) has two vacuum interrupters (33, 34), each associated with an actuating lever (45), and a plurality of movable contacts (29A) for a Ableitkontakt (391) and a plurality of movable contacts (29S) for stage contacts (392) or selector contacts (84). On-load tap-changer (1) according to one of claims 2 to 4, wherein

in the switching module (24) of the sector-shaped carrier (29) of the same

Resistor assemblies (27), a switching segment (25) and a massive element

(36) are arranged around the axis (A) of the switching tube (15) around, and

on the inner wall (20) of the oil vessel (18) corresponding actuating elements (50) are mounted such that the on-load tap-changer is a load selector (1).

An on-load tap-changer (1) according to claim 5, wherein the switching tube (15) carries a holder (40) comprising a switching segment (25), a resistor assembly (27) and the high-mass element (36) radially about the axis (A) of the switching tube (Fig. 15) around.

On-load tap-changer (1) according to claim 5 or 6, wherein the load selector (1) has three switching modules (24) arranged on the switching tube (15) along the axis (A).

On-load tap-changer (1) according to one of claims 2 to 4, wherein

in the switching module (24) three of the sector-shaped carrier (29) of the identical resistor arrangements (27) are arranged around the axis (A) of the switching tube (15) around,

that they enclose the switching tube (15),

that in the direction of the axis (A) of the switching tube (15) and of the resistor assembly (27) spaced three switching segments (25) are mounted around the switching tube (15) around, and

that on the inner wall (20) of the oil vessel (18) corresponding actuating elements (50) are mounted such that the on-load tap-changer is a diverter switch (1).

On-load tap-changer (1) according to claim 8,

wherein the switching tube (15) carries a first holding means (81) for the identical resistor assemblies (27), so that they surround the switching tube (15), and

wherein the switching tube (15) in the axial direction carries a second holding device (82) which holds the three switching segments (25) around the switching tube (15) around.

On-load tap-changer (1) according to claim 8 or 9, wherein the diverter switch (1) has three switching segments (25) arranged radially around the axis (A) on the switching tube (15).

1 1. On-load tap-changer (1) according to one of the preceding claims, wherein each operating lever (45) of the switching segment (25) carries a roller (43) which cooperates with the upper control cam (51) and the lower control cam (52) of the actuating elements (50).

12. on-load tap-changer (1) according to one of the preceding claims,

wherein on an inner surface (56) of each actuating element (50) at least one Ableitkontakt (391) and at least one stage contact (392) or a selector contact (84) via a respective holding element (31) and connected to an outer wall (16) of

Oil vessel (18) are held and

wherein an electrical connection element (68) of the respective discharge contact (391) or an electrical connection element (39, 85, 86) of the respective tap contact (392) or respective selector contact (84) through a shield cap (30) to the outer wall (16) of the oil vessel ( 18) is guided.

13. on-load tap-changer (1) according to claim 12, wherein due to the arrangement of at least the identical switching segments (25) and the identical resistor arrangements (27) of the on-load tap-changer (1) is a load selector and the Ableitkontakt is formed as a continuous diverter (391).

14. on-load tap-changer (1) according to claim 12, wherein due to the arrangement of at least the identical switching segments (25) and the identical resistor arrangements (27) of the on-load tap-changer (1) is a diverter switch and the diverter (391) is a ring segment.

15. on-load tap-changer (1) according to one of the preceding claims, wherein a flywheel (35) on the switching tube (15) is mounted.