Winding and electrical device

Abstract

The application discloses a winding and an electrical device, the winding comprising a winding body and at least two winding outlets connected with the winding body; wherein the winding body is provided with a body shielding layer, and at least one winding outlet is provided with an outlet shielding layer. In the winding disclosed by the application, the outlet shielding layer is arranged on at least one winding outlet, so that the winding body does not need to shield the winding outlet, the shielding effect of the winding outlet is not limited by the number and position of the winding outlet, the insulation risk at the winding outlet is effectively reduced, and the probability of partial discharge at the winding outlet is reduced.

Description

Technical Field

[0001] This invention relates to the field of winding shielding technology, and more specifically, to a winding and electrical equipment. Background Technology

[0002] In transformers or inductors used in high-voltage applications, the winding components are generally tightly wound with enameled wire. Due to the presence of high-voltage potential, uneven surfaces of the winding components or insulation risks introduced by the wire itself can lead to local electric field distortion.

[0003] Currently, the problem of local electric field distortion is mainly solved by shielding the winding body. In this case, in order to reduce the insulation risk at the winding outlets of the winding assembly, it is necessary to design the number and location of the winding outlets so that the winding outlets are located within the shielding area of ​​the winding body itself.

[0004] However, as the length and number of winding leads increase, the shielding effect of the winding body on the winding leads weakens, and there is still a significant insulation risk at the winding leads.

[0005] In summary, how to reduce the insulation risk at the winding outlet is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a winding that reduces the insulation risk at the winding outlet. Another object of the present invention is to provide an electrical device including the above-described winding.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A winding includes: a winding body and at least two winding leads connected to the winding body; wherein the winding body is provided with a body shielding layer, and at least one of the winding leads is provided with a lead shielding layer.

[0009] Optionally, at least one of the lead-out shielding layers on the winding lead-out is a first lead-out shielding layer, and the first lead-out shielding layer and the lead-out terminal of the winding lead-out where it is located are insulated from each other.

[0010] And / or, at least one of the lead wire shielding layers on the winding lead wire is a second lead wire shielding layer, and the second lead wire shielding layer and the body shielding layer are insulated from each other.

[0011] Optionally, the first outgoing wire shielding layer and the second outgoing wire shielding layer are the same outgoing wire shielding layer.

[0012] Optionally, there is a first gap between the first outgoing shield layer and the outgoing terminal of the winding outgoing line, and the insulating layer in the winding outgoing line located in the first gap provides an insulating connection between the first outgoing shield layer and the outgoing terminal.

[0013] Optionally, the width of the first gap is determined by a first insulating limiting ring, which is used to be fitted onto the winding output line.

[0014] Optionally, the first insulating limiting ring can be detachably sleeved on the winding output line.

[0015] Optionally, the first outgoing shielding layer extends to the main shielding layer and is electrically connected to the main shielding layer.

[0016] Optionally, all of the outgoing wire shielding layers are the first outgoing wire shielding layer, and the winding further includes a first shielding potential connection terminal electrically connected to the main body shielding layer.

[0017] Optionally, at least one of the lead-out shielding layers on the winding lead-out line is a first lead-out shielding layer, and at least one of the lead-out shielding layers on the winding lead-out line is a third lead-out shielding layer. One end of the third lead-out shielding layer extends to the main body shielding layer and is electrically connected to the main body shielding layer, and the other end of the third lead-out shielding layer extends to the lead-out terminal of the winding lead-out line where it is located and is short-circuited to the lead-out terminal.

[0018] Optionally, a second gap exists between the second outgoing wire shielding layer and the main body shielding layer, and the insulating layer in the winding outgoing wire located in the second gap provides an insulating connection between the second outgoing wire shielding layer and the main body shielding layer.

[0019] Optionally, the second gap is determined by a second insulating limiting ring, which is used to be fitted onto the winding lead.

[0020] Optionally, the second insulating limiting ring can be detachably sleeved on the winding output line.

[0021] Optionally, the second outgoing wire shielding layer covers the outgoing terminal of the winding wire, and the second outgoing wire shielding layer and the outgoing terminal are short-circuited.

[0022] Optionally, all of the outgoing wire shielding layers are the second outgoing wire shielding layer, and the winding further includes a second shielding potential connection terminal electrically connected to the main body shielding layer.

[0023] Optionally, at least one of the winding leads has a second shielding layer, and the other winding lead has a third shielding layer. One end of the third shielding layer extends to the main shielding layer and is electrically connected to it, while the other end extends to the lead terminal of the winding lead and is short-circuited to it.

[0024] Based on the windings provided above, the present invention also provides an electrical device including a winding, wherein the winding is any of the windings described above.

[0025] In the winding provided by the present invention, by providing a lead wire shielding layer on at least one winding lead wire, the winding body does not need to shield the winding lead wire. This makes the shielding effect of the winding lead wire not limited by the number and position of the winding lead wire, effectively reducing the insulation risk at the winding lead wire and thus reducing the probability of partial discharge at the winding lead wire. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the winding body and the winding lead wire in the winding provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a winding structure provided in an embodiment of the present invention;

[0029] Figure 3 This is another schematic diagram of the winding structure provided in an embodiment of the present invention;

[0030] Figure 4 This is another schematic diagram of the winding structure provided in an embodiment of the present invention;

[0031] Figure 5 This is another schematic diagram of the winding structure provided in an embodiment of the present invention;

[0032] Figure 6 This is another schematic diagram of the winding structure provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of another winding structure provided in an embodiment of the present invention.

[0034] Figures 1-7 middle:

[0035] 01 is the winding body, 02 is the winding lead, 021 is the lead terminal, 03 is the body shielding layer, 04a is the first lead shielding layer, 04b is the second lead shielding layer, 04c is the third lead shielding layer, 05 is the first shielding potential connection terminal, 06 is the first gap, 07 is the second gap, and 08 is the second shielding potential lead terminal. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figure 1 As shown, the winding provided in this embodiment of the invention includes: a winding body 01, and two winding leads 02 connected to the winding body 01.

[0038] In some embodiments, such as Figure 5 As shown, there are three winding leads 02. Of course, it is also possible to choose four or more winding leads 02; the number of winding leads 02 is not limited to two or three.

[0039] The winding body 01 is provided with a body shielding layer 03. In order to ensure the shielding effect, the body shielding layer 03 covers the winding body 01, and the outgoing wire shielding layer is provided on the outer surface of the winding outgoing wire 02.

[0040] To reduce the insulation risk at winding lead 02, at least one winding lead 02 is provided with a lead shielding layer. This eliminates the need to ensure that the winding lead 02 with the lead shielding layer is within the shielding area of ​​the winding body 01 itself. Therefore, the shielding effect of the winding lead 02 with the lead shielding layer is not limited by the number or location of the winding leads 02, effectively reducing the insulation risk at the winding lead 02 and decreasing the probability of partial discharge at the winding lead 02.

[0041] It should be noted that winding leads 02 that can be shielded by the winding body 01 itself do not need to be provided with a lead shielding layer.

[0042] In the above winding, due to the presence of an outgoing wire shielding layer, it is relatively easy for the winding to short-circuit through the main body shielding layer 03 and the outgoing wire shielding layer.

[0043] To avoid the above problems, such as Figure 2 and Figure 3As shown, on the one hand, at least one winding lead-out shielding layer on the winding lead-out 02 can be selected as the first lead-out shielding layer 04a, and the first lead-out shielding layer 04a and the lead-out terminal 021 of the winding lead-out 02 to which it is located are insulated and connected.

[0044] On the other hand, such as Figures 4-7 As shown, at least one winding lead 02 can be selected as the second lead shield 04b, and the second lead shield 04b and the main body shield 03 are insulated from each other.

[0045] The above two aspects can be implemented separately or simultaneously. If implemented simultaneously, the shielding layer on the lead wire 02 of one winding is the first lead wire shielding layer 04a, and the shielding layer on the lead wire 02 of the other winding is the second lead wire shielding layer 04b.

[0046] When both of the above aspects are implemented simultaneously, the first outgoing line shielding layer 04a and the second outgoing line shielding layer 04b can be the same outgoing line shielding layer or different outgoing line shielding layers. It can be understood that the same outgoing line shielding layer refers to the same outgoing line shielding layer on the same winding outgoing line 02; different outgoing line shielding layers refer to outgoing line shielding layers on different winding outgoing lines 02.

[0047] When there is only a single potential near the terminal 021 of the winding lead 02, such as a low-voltage winding with only a low-voltage potential or a high-voltage winding with only a high-voltage potential, the local defects (partial unshielded areas) of the winding lead 02 will not cause partial discharge. Therefore, an unshielded area is allowed between the lead shielding layer and the terminal 021. Based on this, to facilitate the insulating connection between the first lead shielding layer 04a and the terminal 021 of the winding lead 02, a first gap 06 can be selected between the first lead shielding layer 04a and the terminal 021 of the winding lead 02. The insulating layer in the winding lead 02 located in the first gap 06 provides an insulating connection between the first lead shielding layer 04a and the terminal 021.

[0048] It is understandable that the first outgoing shielding layer 04a and the outgoing terminal 021 are insulated and connected through the insulation layer of the winding outgoing line 02, which makes full use of the structure of the winding outgoing line 02 itself and simplifies the structure of the entire winding.

[0049] In other embodiments, the first outgoing shielding layer 04a and the outgoing terminal 021 of the winding outgoing line 02 where it is located can also be insulated and connected in other ways, and are not limited to the above embodiments.

[0050] To ensure the first gap 06 is properly positioned, its width can be determined by a first insulating retaining ring, which is fitted onto the winding lead 02. It is understood that the position of the first insulating retaining ring corresponds to the first gap 06. This also prevents the first lead shielding layer 04a from sliding on the winding lead 02.

[0051] In this case, the winding may include a first insulating limiting ring. The first outgoing shielding layer 04a and the outgoing terminal 021 are insulated from each other by the insulating layer of the winding outgoing line 02, and the first outgoing shielding layer 04a and the outgoing terminal 021 are also insulated from each other by the first insulating limiting ring.

[0052] To simplify the structure, the aforementioned first insulating limiting ring is detachably fitted onto the winding lead 02. Thus, before the first lead shielding layer 04a is installed, the first insulating limiting ring is fitted onto the winding lead 02; after the first lead shielding layer 04a is installed, the first insulating limiting ring is detached from the winding lead 02, so the winding does not include the first insulating limiting ring.

[0053] The first outgoing shielding layer 04a and the main shielding layer 03 can be electrically connected or insulatedly connected.

[0054] In one specific embodiment, to facilitate the connection of the shielding potential, the first outgoing shielding layer 04a can be extended to the main shielding layer 03 and electrically connected to the main shielding layer 03. In this way, the first outgoing shielding layer 04a and the main shielding layer 03 can share a single shielding potential connection structure.

[0055] like Figure 2 As shown, if all outgoing wire shielding layers are the first outgoing wire shielding layer 04a, that is, if the outgoing wire shielding layers on all winding outgoing wires with outgoing wire shielding layers are the first outgoing wire shielding layer 04a, the entire winding can be provided with only one shielding potential connection structure. Specifically, the winding also includes a first shielding potential connection terminal 05 that is electrically connected to the main body shielding layer 03.

[0056] Of course, the first shielding potential connection terminal 05 and the first outgoing shielding layer 04a can also be electrically connected, and it is not limited to the above-described embodiments.

[0057] If the first outgoing shielding layer 04a is insulated from the main body shielding layer 03, then the shielding potential connection structure of the first outgoing shielding layer 04a and the shielding potential connection structure of the main body shielding layer 03 need to be set separately.

[0058] In another specific embodiment, for ease of connecting to the shielding potential, such as Figure 3As shown, at least one winding lead 02 may be selected as the first lead shield 04a, which extends to the main shield 03 and is electrically connected to the main shield 03. At least one winding lead 02 may be selected as the third lead shield 04c, with one end of the third lead shield 04c extending to the main shield 03 and being electrically connected to the main shield 03, and the other end of the third lead shield 04c extending to the lead terminal 021 of the winding lead 02 to which it is located and short-circuited to the lead terminal 021.

[0059] It should be noted that the sum of the number of winding leads 02 with the third lead shielding layer 04c and the number of winding leads 02 with the first lead shielding layer 04a is less than or equal to the number of winding leads 02 with lead shielding layers.

[0060] In the above embodiments, the main body shielding layer 03 and the third outgoing line shielding layer 04c are connected to the shielding potential through the outgoing line terminal 021, eliminating the need for a separate shielding potential connection structure and an external shielding potential, thus simplifying the structure.

[0061] In the aforementioned winding, the first outgoing shielding layer 04a and the main body shielding layer 03 can be selected as an integral structure, or they can be selected as separate structures. If the first outgoing shielding layer 04a and the main body shielding layer 03 are separate structures, they can be electrically connected by crimping or bonding.

[0062] Accordingly, the aforementioned third outgoing shielding layer 04c and main body shielding layer 03 can be an integral structure or a separate structure. If the third outgoing shielding layer 04c and main body shielding layer 03 are separate structures, they can be electrically connected by crimping or bonding.

[0063] In one specific embodiment, to facilitate the insulating connection between the second outgoing shielding layer 04b and the main body shielding layer 03, such as Figures 4-7 As shown, a second gap 07 can be selected between the second outgoing shield layer 04b and the main body shield layer 03. The insulation layer in the winding outgoing line 02 located in the second gap 07 provides an insulating connection between the second outgoing shield layer 04b and the main body shield layer 03.

[0064] It is understandable that the second outgoing line shielding layer 04b and the main body shielding layer 03 are insulated and connected through the insulation layer of the winding outgoing line 02, making full use of the structure of the winding outgoing line 02 itself and simplifying the structure of the entire winding.

[0065] In the above embodiments, since the second gap 07 is close to the main shielding layer 03, the unshielded part of the second gap 07 can be within the shielding range of the winding body 01 itself. Therefore, the second gap 07 should be as close as possible to the winding body 01.

[0066] The above-described embodiments are applicable to situations where there are different potentials near the output terminal 021 of the winding output line 02, such as a low-voltage potential near the high-voltage winding output line or a high-voltage potential near the low-voltage winding output line; they are also applicable to situations where there is only a single corresponding potential near the output terminal 021 of the winding output line 02.

[0067] In other embodiments, the second outgoing shielding layer 04b and the main shielding layer 03 can also be insulated and connected in other ways, and are not limited to the above embodiments.

[0068] To ensure the second gap 07 is properly secured, it can be determined by a second insulating retaining ring, which is fitted onto the winding lead 02. It is understood that the position of the second insulating retaining ring is the second gap 07. This also prevents the second lead shielding layer 04b from sliding on the winding lead 02.

[0069] In this case, the winding may include a second insulating limiting ring. The second outgoing line shielding layer 04b and the main body shielding layer 03 are insulated and connected through the insulation layer of the winding outgoing line 02, while the second outgoing line shielding layer 04b and the main body shielding layer 03 are also insulated and connected through the second insulating limiting ring.

[0070] To simplify the structure, the second insulating limiting ring is detachably fitted onto the winding lead 02. Thus, before the second lead shielding layer 04b is installed, the second insulating limiting ring is fitted onto the winding lead 02; after the second lead shielding layer 04b is installed, the second insulating limiting ring is detached from the winding lead 02, so the winding does not include the second insulating limiting ring.

[0071] The aforementioned second outgoing shielding layer 04b can be short-circuited or insulated from the outgoing terminal 021 of the winding outgoing line 02. To simplify the structure, the second outgoing shielding layer 04b can cover the outgoing terminal 021 of the winding outgoing line 02, and the second outgoing shielding layer 04b and the outgoing terminal 021 can be short-circuited. In this way, the second outgoing shielding layer 04b does not require an external shielding potential, effectively simplifying the structure.

[0072] In one specific implementation, such as Figure 6 As shown, all outgoing wire shielding layers are second outgoing wire shielding layers 04b, and the winding also includes a second shielding potential connection terminal 08 that is electrically connected to the main body shielding layer 03.

[0073] In another specific embodiment, for ease of connecting to the shielding potential, such as Figure 7 As shown, the outgoing shielding layer on at least one winding outgoing line 02 is a second shielding layer 04b, and the outgoing shielding layer on at least one winding outgoing line 02 is a third outgoing shielding layer 04c. One end of the third outgoing shielding layer 04c extends to the main body shielding layer 03 and is electrically connected to the main body shielding layer 03. The other end of the third outgoing shielding layer 04c extends to the outgoing terminal 021 of the winding outgoing line 02 where it is located and is short-circuited to the outgoing terminal 021.

[0074] It should be noted that the number of winding leads 02 with the second shielding layer 04b and the number of winding leads 02 with the third lead shielding layer 04c are less than or equal to the number of winding leads 02 with lead shielding layers.

[0075] In the above embodiments, the main body shielding layer 03 and the third outgoing line shielding layer 04c are connected to the shielding potential through the outgoing line terminal 021, eliminating the need for a separate shielding potential connection structure and an external shielding potential, thus simplifying the structure.

[0076] For the connection structure between the third outgoing shielding layer 04c and the main body shielding layer 03, please refer to the previous description, which will not be repeated here.

[0077] The specific type and structure of the main body shielding layer 03 and the outgoing wire shielding layer are selected according to actual needs. For example, the main body shielding layer 03 is a shielding layer made of semi-conductive paper half-overlapped; the outgoing wire shielding layer is a shielding layer made of semi-conductive paper half-overlapped. This embodiment does not limit this.

[0078] To more specifically illustrate the technical solution provided in this embodiment, the following detailed description is based on the embodiment.

[0079] Example 1

[0080] like Figure 2 As shown, the winding provided in this embodiment includes: a winding body 01 and two winding leads 02 connected to the winding body 01; wherein, the winding body 01 is provided with a body shielding layer 03, the lead shielding layers on the two winding leads 02 are both first lead shielding layers 04a, the first lead shielding layer 04a and the lead terminal 021 of the winding lead 02 to which it is located are insulatedly connected, and the body shielding layer 03 is provided with a first shielding potential connection terminal 05 electrically connected to it.

[0081] Specifically, there is a first gap 06 between the first outgoing shield layer 04a and the outgoing terminal 021 of the winding outgoing line 02 to which it is located, and the insulating layer in the winding outgoing line 02 located in the first gap 06 provides an insulating connection between the first outgoing shield layer 04a and the outgoing terminal 021.

[0082] Example 2

[0083] like Figure 3 As shown, the difference between the winding provided in this embodiment 2 and that in embodiment 1 is that the lead wire shielding layer on the lead wire 02 of the winding is different.

[0084] In this second embodiment, the outgoing shielding layer on one winding outgoing line 02 is the first outgoing shielding layer 04a, and the first outgoing shielding layer 04a and the outgoing terminal 021 of the winding outgoing line 02 to which it is located are insulated and connected; the outgoing shielding layer on the other winding outgoing line 02 is the third outgoing shielding layer 04c, one end of the third outgoing shielding layer 04c extends to the main body shielding layer 03 and is electrically connected to the main body shielding layer 03, and the other end of the third outgoing shielding layer 04c extends to the outgoing terminal 021 of the winding outgoing line 02 to which it is located and is short-circuited to the outgoing terminal 021.

[0085] In this second embodiment, the main shielding layer 03 and the third outgoing shielding layer 04c are connected to the shielding potential through the outgoing terminal 021 of a winding outgoing line 02.

[0086] Example 3

[0087] like Figure 4-6 As shown, the difference between the winding provided in this embodiment three and that in embodiment one is that the lead wire shielding layer on the lead wire 02 of the winding is different.

[0088] In this third embodiment, all the winding leads 02 have a second lead shielding layer 04b, which is insulated from the main body shielding layer 03. The second lead shielding layer 04b covers the lead terminal 021 of the winding lead 02, and the second lead shielding layer 04b and the lead terminal 021 are short-circuited.

[0089] Specifically, there is a second gap 07 between the second outgoing shield layer 04b and the main body shield layer 03, and the insulating layer in the winding outgoing wire 02 located in the second gap 07 provides an insulating connection between the second outgoing shield layer 04b and the main body shield layer 03.

[0090] like Figure 4 and Figure 6 As shown, there are two winding leads 02; Figure 5 As shown, there are three winding leads 02.

[0091] To facilitate the connection of the external shielding potential to the main shielding layer 03, such as Figure 6 As shown, the aforementioned main body shielding layer 03 is provided with a second shielding potential connection terminal 08 that is electrically connected to it.

[0092] Example 4

[0093] like Figure 7 As shown, the difference between the winding provided in this embodiment four and that in embodiment three is that the lead wire shielding layer on the lead wire 02 of the winding is different.

[0094] In this fourth embodiment, the outgoing shielding layer on one winding outgoing line 02 is the second outgoing shielding layer 04b. The second outgoing shielding layer 04b and the main body shielding layer 03 are insulated and connected. The second outgoing shielding layer 04b covers the outgoing terminal 021 of the winding outgoing line 02, and the second outgoing shielding layer 04b and the outgoing terminal 021 are short-circuited. The outgoing shielding layer on the other winding outgoing line 02 is the third outgoing shielding layer 04c. One end of the third outgoing shielding layer 04c extends to the main body shielding layer 03 and is electrically connected to the main body shielding layer 03. The other end of the third outgoing shielding layer 04c extends to the outgoing terminal 021 of the winding outgoing line 02 where it is located and is short-circuited to the outgoing terminal 021.

[0095] In this fourth embodiment, the main shielding layer 03 and the third outgoing shielding layer 04c are connected to the shielding potential through the outgoing terminal 021 of a winding outgoing line 02.

[0096] Based on the windings provided in the above embodiments, this embodiment also provides an electrical device, which includes a winding, the winding being the winding described in the above embodiments.

[0097] Since the windings provided in the above embodiments have the above-mentioned technical effects, and the above-mentioned electrical equipment includes the above-mentioned windings, the above-mentioned electrical equipment also has the corresponding technical effects, which will not be repeated here.

[0098] The type of electrical equipment mentioned above can be selected according to actual needs. For example, the electrical equipment mentioned above may be a transformer or an inductor. This embodiment does not limit this.

[0099] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A winding, characterized in that, include: The winding body and at least two winding leads connected to the winding body; the winding body is provided with a body shielding layer, and at least one of the winding leads is provided with a lead shielding layer; Wherein, at least one of the winding leads has a second lead shielding layer, the second lead shielding layer and the main body shielding layer are insulatedly connected, a second gap exists between the second lead shielding layer and the main body shielding layer, an insulating layer in the winding lead located in the second gap is insulatedly connected to the second lead shielding layer and the main body shielding layer, the second lead shielding layer covers the lead terminal of the winding lead, and the second lead shielding layer and the lead terminal are short-circuited.

2. The winding as described in claim 1, characterized in that, At least one of the winding leads has a first lead shielding layer, and the first lead shielding layer and the lead terminal of the winding lead to which it is located are insulated from each other.

3. The winding as described in claim 2, characterized in that, There is a first gap between the first outgoing shield layer and the outgoing terminal of the winding outgoing line, and the insulating layer in the winding outgoing line located in the first gap provides an insulating connection between the first outgoing shield layer and the outgoing terminal.

4. The winding as described in claim 3, characterized in that, The width of the first gap is determined by the first insulating limiting ring, which is used to be sleeved on the winding output line.

5. The winding as described in claim 4, characterized in that, The first insulating limiting ring is detachably sleeved on the winding output line.

6. The winding as described in claim 2, characterized in that, The first outgoing shielding layer extends to the main shielding layer and is electrically connected to the main shielding layer.

7. The winding as described in claim 6, characterized in that, The winding also includes a first shielding potential connection terminal that is electrically connected to the body shielding layer.

8. The winding as described in claim 6, characterized in that, At least one of the winding leads has a first lead shielding layer, and at least one of the winding leads has a third lead shielding layer. One end of the third lead shielding layer extends to the main body shielding layer and is electrically connected to the main body shielding layer. The other end of the third lead shielding layer extends to the lead terminal of the winding lead where it is located and is short-circuited to the lead terminal.

9. The winding as described in claim 1, characterized in that, The second gap is determined by a second insulating limiting ring, which is used to be fitted onto the winding lead.

10. The winding as described in claim 9, characterized in that, The second insulating limiting ring is detachably sleeved on the winding output line.

11. The winding as claimed in claim 1, characterized in that, All of the outgoing wire shielding layers are the second outgoing wire shielding layers, and the winding also includes a second shielding potential connection terminal electrically connected to the main body shielding layer.

12. The winding as described in claim 1, characterized in that, At least one of the winding leads has a third lead shielding layer, one end of which extends to the main body shielding layer and is electrically connected to the main body shielding layer, and the other end of which extends to the lead terminal of the winding lead and is short-circuited to the lead terminal.

13. An electrical device comprising windings, characterized in that, The winding is the winding as described in any one of claims 1-12.

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