Bar arrangement for mutual support of two components arranged one inside the other

Abstract

The invention relates to a strip arrangement (1) for the mutual support of two components arranged one inside the other, in particular for the mutual support of transformer windings (5, 7), wherein the strip arrangement (1) comprises two strips (21, 23) arranged with their longitudinal directions (25, 27) parallel to one another and is designed to convert a relative movement of the strips (21, 23) to one another along their longitudinal directions (25, 27) into an increase in the thickness (17) of the strip arrangement (1).In order to prevent large sections from being created in which the two components are not sufficiently supported against one another, it is provided that the strip arrangement (1) has at least two ramps (43), each ramp (43) being formed in a side surface (29, 31) of one of the two strips (21, 23), and each ramp (43) being assigned a run-up element (51) which is formed in a side surface (29, 31) of the other strip (21, 23) and is designed to slide along the associated ramp (43).

Description

[0001] The invention relates to a strip arrangement for the mutual support of two nested components, in particular for the mutual support of transformer windings. The strip arrangement comprises two strips arranged with their longitudinal directions parallel to one another and is designed to convert a relative movement of the strips to one another along their longitudinal directions into an increase in the thickness of the strip arrangement. The invention also relates to a winding arrangement consisting of two nested transformer windings that can be arranged around a common core.

[0002] The above-mentioned strip arrangement is known, for example, from transformer construction, particularly in the area of ​​the winding structure of an active part, i.e. the insulation structure between two transformer windings arranged around the same core leg. The so-called leakage channel extends between two transformer windings that can be arranged around the same core. An insulation structure made up of strips and cylinders is often constructed in this leakage channel. Since the transformer windings are placed one on top of the other from above, the structures in the leakage channel must always be constructed with undersize. However, some transformers require a tighter structure between the transformer windings, since radial forces that arise during transformer operation must be better supported, for example in the event of a short circuit.

[0003] To achieve the tighter structure described above, so-called wedge strips are known, which are inserted from above after the two transformer windings have been placed. The two transformer windings are usually constructed as hollow cylinders, with the smaller of the transformer windings inserted inside the larger one. The two transformer windings are usually arranged coaxially with each other.

[0004] One of the strips can, for example, consist of a wedge-shaped lower part, the so-called "slide", which is first mounted in the leakage channel. The other strip can be a long wedge that is driven in from above. These two counter-rotating wedges, or wedge strips, move away from each other, at least with their outer sides, when they are moved relative to each other along their longitudinal directions. The thickness of the strip arrangement therefore increases. This presses the strips between the transformer windings in the leakage channel, making the structure between the transformer windings more rigid. One wedge strip forms a ramp along which the other wedge strip can slide. The thickness of the strip arrangement refers to the thickness of the adjacent strips in a direction between the two transformer windings, in particular a radial direction relative to the common axis of the two transformer windings.

[0005] However, these long wedge strips have the disadvantage that the first strips can be easily hammered in at the beginning of the assembly, but the last third of the strips can then be installed only with great difficulty.

[0006] This means that despite careful installation of the strips, even if they are installed crosswise, it may not be possible to install them evenly all the way down. Overhanging strips may need to be chiseled off.

[0007] This can lead to a situation where, in at least one arrangement of strips in the leakage channel, there is a section where the strips are adjacent to each other and the two transformer windings are mutually supported. However, there is also a second section along the longitudinal direction of the strips where the strips are not adjacent to each other or into which one of the strips does not even extend. In this case, there is no mutual support between the two transformer windings.

[0008] The unsupported area can cause problems during operation of the transformer.

[0009] It is therefore the object of the invention to provide a strip arrangement which is easy to assemble and by means of which such sections in which the two components are not sufficiently supported can be avoided.

[0010] This object is achieved according to the invention by the strip arrangement according to claim 1 and a winding arrangement according to claim 11. Advantageous embodiments are the subject of the dependent claims. Thus, the invention provides that the strip arrangement has at least two ramps, each ramp being formed in a side surface of one of the two strips, and each ramp being assigned a run-up element that is formed in a side surface of the other strip and is designed to slide along the associated ramp. For the winding arrangement, it is provided that at least one strip arrangement according to the invention is arranged between the two transformer windings.

[0011] By having multiple ramps, the strip arrangement is divided into several sections where the two strips rest against each other, supporting the two transformer windings against each other. This eliminates the two sections described above, which can occur when using wedge strips. Instead, the unsupported sections are distributed across the length of the strips, thus avoiding large, continuous, unsupported sections.

[0012] In this text, the term "bar" refers to an elongated, straight structure extending longitudinally. The term "transformer winding" also includes a winding in another electrical system that uses windings based on the transformer principle, such as a saturable reactor.

[0013] The two strips of the strip arrangement are arranged with their longitudinal directions parallel to each other, at least in a pre-assembly position and in an assembly position of the strip arrangement. Preferably, the side surface of one strip is arranged opposite the side surface of the other strip. Particularly preferably, the two side surfaces abut one another. In each case, a run-up element is in contact with the associated ramp. The run-up element can slide along the ramp during assembly.

[0014] The pre-assembly position refers to the position of the two strips relative to each other at a time before the relative movement of the two strips begins. In the pre-assembly position, the strip arrangement is preferably already arranged between the transformer windings. However, the relative movement of the strips relative to each other and the associated increase in thickness have not yet occurred in this state.

[0015] The assembly position is the position in which the relative movement and the associated increase in thickness are complete. In the assembly position, the two strips are pressed tightly against each other, supporting the transformer windings against each other.

[0016] Advantageous embodiments of the invention are described in more detail below. The features described in connection with these embodiments can be combined with one another as desired. Individual features of the embodiments described below can also be omitted if the effect of this feature is not important in a particular application.

[0017] The strips of the strip arrangement according to the invention are preferably made of wood, paper, cardboard, pressboard or another electrically insulating and non-magnetizable material commonly used in transformer construction.

[0018] According to a first advantageous embodiment of the strip arrangement, the two strips can be offset from each other, at least in the pre-assembly position, such that the overall thickness of the strip arrangement is minimized. Thus, the ramp elements can be located at the lowest areas of the respective ramps. This allows the strip arrangement to experience the greatest increase in thickness during assembly.

[0019] During assembly, i.e., during the relative movement of the two strips, the overrun elements can slide along their respective ramps. The thickness of the strip arrangement can increase continuously.

[0020] Each ramp element preferably projects from the rail on which it is mounted, in the direction of the ramp associated with that ramp element. This allows for unhindered interaction between the ramp element and the ramp.

[0021] Preferably, each ramp, in particular with a long side, runs obliquely to a longitudinal direction of the associated strip, wherein the side surface of the strip in the region of the ramp, in particular through the long side, encloses an acute angle with the longitudinal direction of the strip.

[0022] The ramps are preferably arranged one behind the other in the longitudinal direction of the strips. Particularly preferably, all ramps in the strip arrangement have the same orientation.

[0023] Also preferably, all ramps of the strip arrangement have identical dimensions within the manufacturing tolerances.

[0024] According to a particularly preferred embodiment of the strip arrangement, all ramps are arranged on the same strip. For example, one of the strips can comprise exclusively ramps, while the other strip can comprise exclusively overrun elements.

[0025] The ramps on a batten can form a sawtooth profile. The sawtooths extend along and across the batten's longitudinal direction. The batten's profile is viewed in a direction perpendicular to the longitudinal direction.

[0026] According to a particularly advantageous embodiment of the slat arrangement, at least one of the ramp elements itself can be designed as a ramp. The ramp-shaped ramp element can accordingly abut the ramp of the other slat belonging to this ramp element, so that a displacement of the slats parallel to their longitudinal directions causes the two ramps to slide along each other in such a way that the two slats are pushed away from each other, thus increasing the thickness of the slat arrangement. Naturally, the two opposite ramps are oriented in opposite directions for this purpose.

[0027] Preferably, all overrun elements are formed as ramps.

[0028] According to an advantageous embodiment, both strips are provided with a plurality of ramps shaped complementarily to one another.

[0029] Particularly preferably, each of the two ramps is provided with a sawtooth profile, with the sawtooth profiles of both strips being complementary to each other. This allows for particularly uniform support of the two strips.

[0030] The ramps of both strips preferably have the same length and the same height, whereby the length refers to the longitudinal direction of the strips and the height refers to the direction of the thickness of the strip arrangement.

[0031] In order to hold the two strips of the strip arrangement in a predefined pre-assembly position, the strip arrangement can have a transport lock, in particular a detachable one, by which the two strips are held together at least in a transport state of the strip arrangement.

[0032] The transport state can correspond to the pre-assembly position. Preferably, the two strips are positioned relative to each other in such a way that the thickness of the strip arrangement is minimized.

[0033] In order to obtain a transport securing device of simple construction, the transport securing device can comprise at least one bandage extending around both strips, in particular a paper bandage.

[0034] The bandage is preferably attached to at least one of the two strips, for example by means of spot gluing.

[0035] In order to prevent the two strips from shearing apart during assembly, the strip arrangement can comprise at least one guide arrangement by means of which the two strips can be guided during movement parallel to their longitudinal directions, in particular from the pre-assembly position into the assembly position.

[0036] The guide arrangement can in particular have guide structures that complement each other.

[0037] A particularly simple but effective guide arrangement can be obtained by providing at least one elongated hole in one of the strips and at least one projection in the other strip, wherein the at least one projection projects into the elongated hole at least in the pre-assembly position.

[0038] Preferably, the projection remains in the elongated hole even in the assembled position. The elongated hole extends longitudinally, preferably parallel to the longitudinal direction of the two strips, and penetrates the strip parallel to the thickness direction of the strip arrangement.

[0039] Instead of a slot, a groove or other suitable structure may be provided.

[0040] The at least one projection can, for example, be formed by a pin that projects into the elongated hole. The pin can extend transversely to the longitudinal direction of the strip to which it is attached, away from the strip and into the elongated hole in the other strip. The guide arrangement prevents the strips from slipping sideways from one another during assembly.

[0041] To further explain the invention, reference is made to the figures in the following part of the description, from which further advantageous details and possible areas of application of the invention can be seen. The figures are to be understood as examples and are intended to illustrate the nature of the invention, but in no way restrict or even represent it exhaustively. The same reference numerals are used for elements with the same structure and / or function.

[0042] They show: Fig. 1 a schematic perspective view of a winding arrangement with several merely indicated strip arrangements; Fig. 2 a sectional view of a prior art strip arrangement between two transformer windings; Fig. 3 a strip arrangement according to the invention between two transformer windings; Fig. 4 shows a guide arrangement on a strip arrangement according to the invention in a schematic sectional view; Fig. 5 a transport lock on a strip arrangement according to the invention in a schematic sectional view; and Fig. 6 a schematic sectional view of a strip arrangement in which only one of the strips is provided with ramps.

[0043] In the following, the preferred application of a strip arrangement 1 according to the invention is first described using a winding arrangement 3 of a transformer (not shown) with reference to the Fig. 1 described.

[0044] The Fig. 1 does not yet show any details of the strip arrangement 1 according to the invention. These are described below with reference to the Fig. 3 to 6.

[0045] Even if the winding arrangement 3 represents the preferred field of application of the strip arrangement 1 according to the invention, the strip arrangement 1 can also be used in other areas, in particular within electrical systems, for the mutual support of components arranged one inside the other.

[0046] The winding arrangement 3 comprises two transformer windings arranged one inside the other, namely a low-voltage winding 5 and a high-voltage winding 7.

[0047] The low-voltage winding 5 has a smaller diameter than the high-voltage winding 7 and is arranged within the high-voltage winding 7. The low-voltage winding 5 and the high-voltage winding 7 are hereinafter referred to as windings 5 ​​and 7, respectively.

[0048] Each winding 5, 7 preferably has an overall hollow cylindrical shape.

[0049] The two windings 5 ​​and 7 are preferably arranged coaxially to one another and run with their respective longitudinal axes along a central longitudinal axis 9 of the winding arrangement 3.

[0050] An iron core 11 can also run along the central longitudinal axis 9, which is preferably arranged coaxially to the windings 5 ​​and 7.

[0051] Both windings 5 ​​and 7 run around the iron core 11. Consequently, the iron core 11 is located within the low-voltage winding 5.

[0052] It may be necessary to mutually support the two windings 5 ​​and 7. For this purpose, at least one, but preferably several, strip arrangements 1 are inserted into the space between the two windings 5 ​​and 7.

[0053] This space is called scattering channel 13. In Fig. 1, four strip arrangements 1 are shown merely as examples. However, a plurality of strip arrangements 1 are preferably provided, which are arranged side by side in the scattering channel 13 along a circumferential direction U of the winding arrangement 3.

[0054] The strip arrangements 1 are preferably arranged with their respective longitudinal axes 15 parallel to the central longitudinal axis 9 of the winding arrangement 3.

[0055] In order to ensure that the two windings 5 ​​and 7 are firmly seated together, the strip arrangements 1 are preferably pressed between the two windings 5 ​​and 7.

[0056] In order to achieve sufficient compression, each strip arrangement 1 is preferably designed to change, in particular to increase, its thickness 17. This will be discussed further below with reference to the Fig. 3 to 6 received.

[0057] The thickness 17 is measured along a direction parallel to a surface normal 19 on the low-voltage winding 5 in the area where the strip arrangement 1 abuts it. Consequently, the direction of the thickness 17 runs along a radial direction R relative to the central longitudinal axis 9 of the winding arrangement 3.

[0058] Each strip arrangement 1 consists of two strips 21 and 23. The two strips 21 and 23 of a strip arrangement 1 are arranged one behind the other in the winding arrangement 3 along the radial direction R.

[0059] Merely as an example, Fig. 1 the radially inner bar, i.e. adjacent to the low-voltage winding 5, is designated by reference numeral 21 and the radially outer bar, i.e. adjacent to the high-voltage winding 7, is designated by reference numeral 23.

[0060] Further elements, in particular stationary strips and / or hollow cylindrical elements, can be arranged between the strip 21 and the low-voltage winding 5 and / or between the strip 23 and the high-voltage winding 7.

[0061] Each strip 21 and 23 extends along a longitudinal direction 25, respectively 27 (in Fig. 1 not yet shown).

[0062] The strips 21 and 23 of a strip arrangement 1 are each arranged in the scattering channel 13 such that their longitudinal directions 25 and 27 run parallel to the longitudinal axis 15 of the strip arrangement 1 formed by these strips 21 and 23 and thus parallel to the central longitudinal axis 9 of the winding arrangement 3.

[0063] The strip 21 preferably rests with its side surface 29 on the side surface 31 of the strip 23.

[0064] The strips 21 and 23 are preferably made of wood, paper, cardboard, pressboard or another electrically insulating and non-magnetizable material commonly used in transformer construction

[0065] In the following, a winding arrangement from the prior art is briefly described with reference to the Fig. 2 received.

[0066] The winding arrangement 3 comprises the low-voltage winding 5 and the high-voltage winding 7, of which only a part is shown in a sectional view. The windings 5, 7 are preferably as shown in Fig. 1 shown hollow cylindrical.

[0067] The leakage channel 13 extends between the windings 5 ​​and 7. Further hollow cylindrical structures 33 and / or strips 35 can be arranged in the leakage channel 13. The structures 33 and strips 35 are preferably made of wood, paper, cardboard, pressboard, or another electrically insulating and non-magnetizable material commonly used in transformer construction.

[0068] In order to achieve mutual support of the windings 5 ​​and 7, a first wedge bar 37 is inserted into the free space in the scattering channel 13.

[0069] Subsequently, a second wedge bar 39, the wedge shape of which is opposite to the shape of the first wedge bar 37, is introduced into the scattering channel 13.

[0070] In Fig. Figure 2 shows the insertion of the wedge bar 39 from above into the spreading channel 13. The wedge bar 39 can be moved downward into the spreading channel 13 by pressure and / or impact.

[0071] The wedge strips 37 and 39 slide along each other with their side surfaces during assembly.

[0072] Due to the wedge shape of the two wedge bars 37 and 39, the thickness 17 of the arrangement of both bars continuously increases as the wedge bar 39 is moved further into the leakage channel 13. This creates a compression between the two windings 5 ​​and 7. The compression can be mediated by the structures 33 and bars 35.

[0073] At a certain point, further movement of the wedge bar 39 into the spreading channel 13 is no longer possible. If the wedge bar 39 is in this position, as shown in Fig. 2, has not been moved downwards sufficiently, a section 41 remains in the lower area in which no pressure generated by the two wedge bars 37 and 39 can take place.

[0074] In section 41, windings 5 ​​and 7 are therefore not mutually supported.

[0075] This problem is solved by the strip arrangement 1 according to the invention, which is described below with reference to the Fig. 3 is described.

[0076] Fig. 3 shows an embodiment of a winding arrangement 3 according to the invention. The illustration corresponds to that with reference to the Fig. 2 described arrangement from the prior art.

[0077] The strip arrangement 1 according to the invention comprises the two strips 21 and 23. In contrast to the wedge strip 37 of the prior art, the strip 21 is not wedge-shaped.

[0078] Instead, the strip 21 is provided with a plurality of ramps 43 which extend in the side surface 29 or whose surfaces form the side surface 29.

[0079] The ramps 43 each have a long side 45 forming a slope and a short side 47 running perpendicular to the longitudinal direction 25 of the strip 21 and connecting the upper part of a long side 45 with the lower part of the long side 45 of an adjacent ramp 43. The long sides 45 of the ramps 43 form an acute angle with the longitudinal direction 25 of the strip 21.

[0080] The ramps 43 of the strip 21 are each oriented in the same direction. In other words, the long sides 45 of the ramps 43 are arranged parallel to each other.

[0081] Preferably, the long sides 45 of the ramps 43 of the strip 21 each have the same length. Likewise, the short sides 47 of the ramps 43 of the strip 21 each preferably have the same length. Consequently, the ramps 43 of the strip 21 have the same shape and size. The ramps 43 are preferably arranged in a row along the longitudinal direction 25 of the strip 21.

[0082] The shape and arrangement of the ramps 43 of the strip 21 form an overall sawtooth profile 49.

[0083] The second bar 23 of the bar arrangement 1 is provided with ramp elements 51, each of which is associated with a ramp 43 of the bar 21. Each ramp element 51 can slide along the long side 45 of the ramp associated with this ramp element 51.

[0084] Preferably, each ramp element 51 itself is formed as a ramp 43. Particularly preferably, the ramps 43 of the strip 23 are formed complementarily to the ramps 43 of the strip 21. Thus, the strips 21 and 23 have mutually complementary sawtooth profiles 49.

[0085] The function of the strip arrangement 1 according to the invention is described below.

[0086] The strip arrangement 1 can be brought into a pre-assembly position 53, which preferably takes place before the two strips 21 and 23 are inserted into the scattering channel 13.

[0087] In particular, the pre-assembly position 53 can already be set at the factory and the strip arrangement 1 can be transported in the pre-assembly position 53. It can then be inserted directly into the spreading channel 13.

[0088] In the pre-assembly position 53, the thickness 17 of the strip arrangement 1 is at a minimum. The position of the ramps 43 in the pre-assembly position 53 is for one of the ramps 43 in Fig. 3 indicated by dashed lines.

[0089] If the strip arrangement 1 is arranged in the spreading channel 13, one of the strips 21, 23 can be supported at one end. The other strip can then be moved at its opposite end relative to the supported strip such that the ramps 43 of the two strips 21, 23 slide along each other. The supported strip is not moved.

[0090] When the strips 21, 23 are moved relative to each other, the ramps 43 of one strip are moved up the corresponding ramps 43 of the other strip. The thickness 17 of the strip arrangement 1 continuously increases, and the strip arrangement 1 is pressed into the stray channel 13. This provides mutual support for the windings 5, 7.

[0091] As soon as the strips 21, 23 are pressed in so tightly that further relative movement is no longer possible without damaging the strip arrangement 1 or the winding arrangement 3, the assembly position 55 of the strip arrangement 1 is reached.

[0092] Since the strips 21, 23 have several ramps 43 along their longitudinal directions 25, 27, in the assembly position 55, unsupported sections 41, if they occur at all, are distributed over the length of the strip arrangement 1. In addition, the unsupported sections 41 are smaller than the unsupported section 41 when using two wedge strips 37, 39, as described with reference to Fig. 2 was described.

[0093] The strip arrangement 1 according to the invention can in particular prevent the formation of an unsupported section 41 at a longitudinal end of the winding arrangement 3, the size of which represents a problem for the winding arrangement 3.

[0094] Fig. 4 shows an embodiment of a guide arrangement 57 for a strip arrangement 1. The guide arrangement 57 can have an elongated hole 59 in one of the strips, shown here as an example in strip 21, and a projection 61 in the other strip 23.

[0095] The projection 61 is preferably shaped as a pin 63 and projects into the elongated hole 59.

[0096] The elongated hole 59 extends parallel to the longitudinal axis 15 of the strip arrangement 1. The projection 61 is movably received in the elongated hole 59, allowing relative movement of the strips 21 and 23 parallel to the longitudinal axis 15. However, movement is prevented in a direction transverse to the longitudinal axis 15 and transverse to the direction of the thickness 17. This prevents the strips 21, 23 from slipping off one another or from shearing apart.

[0097] Preferably, the strip arrangement 1 has a plurality of guide arrangements 57 along its longitudinal axis 15.

[0098] In Fig. Figure 5 shows an embodiment of a transport lock 65 for the strip assembly 1. The transport lock 65 is designed to hold the two strips 21, 23 together at least in a transport state 66. The transport state 66 can correspond to the pre-assembly position 53.

[0099] The transport lock 65 can be designed to be releasable. Preferably, the transport lock 65 can be designed to allow a relative movement of the strips 21, 23 parallel to the longitudinal axis 15 upon overcoming a predefined force on one of the strips 21, 23.

[0100] The transport lock 65 can be designed to hold the strips 21, 23 together during their relative movement in such a way that they do not move away from each other transversely to the longitudinal axis 15.

[0101] In particular in conjunction with the guide arrangement 57, the transport lock 65 can ensure that the strips 21, 23 can only be moved parallel to the longitudinal axis 15 and can only move away from each other to a predetermined extent.

[0102] The transport securing device 65 may comprise at least one bandage 67, preferably made of paper, extending around both strips 21, 23. The bandage 67 may be attached to at least one of the two strips 21, 23, for example, by a spot bond 69.

[0103] Fig. Figure 6 shows an example of ramp elements 51 that are not shaped as ramps 43. The ramp elements 51 are formed by projections 71 on the bar 23, which can slide along the respective ramps 43 of the bar 21. Reference symbol 1 Bar arrangement 3 Winding arrangement 5 Low-voltage winding 7 High-voltage winding 9 central longitudinal axis of the winding arrangement 11 iron core 13 scattering channel 15 Longitudinal axes of the strip arrangement 17 Thickness of the strip arrangement 19 Surface normals 21 bar 23 bar 25 Longitudinal direction of the bar 21 27 Longitudinal direction of the bar 23 29 side surface 31 side surface 33 hollow cylindrical structure 35 strips 37 Wedge bar 39 Wedge bar 41 unsupported section 43 Ramp 45 long side 47 short side 49 sawtooth profile 51 casserole elements 53 Pre-assembly position 55 Mounting position 57 Management order 59 slot 61 lead 63 pen 65 Transport security 66 Transport condition 67 Bandage 69 spot bonding 71 lead R Radial direction U circumferential direction

Claims

[1] Strip arrangement (1) for the mutual support of two components arranged one inside the other, in particular for the mutual support of transformer windings (5, 7), wherein the strip arrangement (1) comprises two strips (21, 23) arranged with their longitudinal directions (25, 27) parallel to one another and is designed to convert a relative movement of the strips (21, 23) to one another along their longitudinal directions (25, 27) into an increase in the thickness (17) of the strip arrangement (1), characterized by that the strip arrangement (1) has at least two ramps (43), each ramp (43) being formed in a side surface (29, 31) of one of the two strips (21, 23), and each ramp (43) being assigned a run-up element (51) which is formed in a side surface (29, 31) of the other strip (21, 23) and is designed to slide along the associated ramp (43). [2] Strip arrangement (1) according to claim 1, characterized bythat the at least two ramps (43) are arranged on the same bar (21, 23). [3] Strip arrangement (1) according to claim 2, characterized by that the strip (21, 23) has a sawtooth profile (49) formed by the ramps (43). [4] Strip arrangement (1) according to one of claims 1 to 3, characterized by that at least one of the run-up elements (51) is formed as a ramp (43). [5] Strip arrangement (1) according to claim 4, characterized by that both strips (21, 23) are provided with a plurality of ramps (43) shaped complementarily to one another. [6] Strip arrangement (1) according to claim 5, characterized by that each of the two strips (21, 23) is provided with a sawtooth profile (49), wherein the sawtooth profiles (49) of the two strips (21, 23) are complementary to one another. [7] Strip arrangement (1) according to one of claims 1 to 6, characterized bythat the strip arrangement (21, 23) has a releasable transport lock (65) by which the two strips (21, 23) are held together at least in a transport state (66) of the strip arrangement (1). [8] Strip arrangement (1) according to claim 7, characterized by that the transport lock (65) comprises at least one bandage (67) extending around both strips (21, 23). [9] Strip arrangement (1) according to one of claims 1 to 8, characterized by that the strip arrangement (1) comprises at least one guide arrangement (57) by means of which the two strips (21, 23) can be guided during movement parallel to their longitudinal directions (25, 27). [10] Strip arrangement (1) according to claim 9, characterized bythat the guide arrangement (57) has at least one elongated hole (59) in one of the strips (21, 23) and at least one projection (61) in the other strip (21, 23), wherein the at least one projection (61) projects into the elongated hole (59) at least in a pre-assembly position (53) of the strip arrangement (1). [11] Winding arrangement (3) consisting of two transformer windings (5, 7) arranged one inside the other, which can be arranged around a common core (11), characterized by that at least one strip arrangement (1) according to one of the preceding claims is arranged between the two transformer windings (5, 7).

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