CN208622534U - Transformer external current mutual inductor - Google Patents
Transformer external current mutual inductor Download PDFInfo
- Publication number
- CN208622534U CN208622534U CN201821167697.1U CN201821167697U CN208622534U CN 208622534 U CN208622534 U CN 208622534U CN 201821167697 U CN201821167697 U CN 201821167697U CN 208622534 U CN208622534 U CN 208622534U
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- Prior art keywords
- transformer
- mutual inductor
- outer housing
- current
- current mutual
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Abstract
The utility model discloses a kind of transformer external current mutual inductors, outer housing including annular, positioned at the intracorporal current transformer winding of the shell, the terminal box being installed on outside the outer housing, the current transformer winding has lead-out wire, the lead-out wire is connected to the terminal box, the transformer external mutual inductor has the epoxy resin for being coated on the current transformer winding surrounding, the epoxy resin is by the outer housing, current transformer winding connects into an entirety, transformer external current mutual inductor is mountable to the outside of transformer, it is not limited by the inside transformer space.
Description
[technical field]
The utility model relates to send field of power transformation more particularly to a kind of transformer external current mutual inductor.
[background technique]
Existing transformer current mutual inductor, which is all mounted in, to be increased inside seat, is immersed in transformer oil, when product is set
When meter change, inner space is no longer more than needed, a series of devices such as related power transformer enclosure must redesign again, limitation
It is very big, it is inflexible.
Therefore it provides the problem of a kind of improved transformer external current mutual inductor is this field urgent need to resolve.
[utility model content]
The utility model is mountable to transformer in view of the above-mentioned problems, providing a kind of transformer external current mutual inductor
Outside is not limited and dustproof and waterproof by the inside transformer space.
To solve the above-mentioned problems, the utility model provides a kind of transformer external current mutual inductor, including annular
Outer housing, positioned at the shell intracorporal current transformer winding, the terminal box that is installed on outside the outer housing, the electric current is mutual
Sensor winding has lead-out wire, and the lead-out wire is connected to the terminal box, and the transformer external mutual inductor has cladding
In the epoxy resin of the current transformer winding surrounding, the epoxy resin connects the outer housing, current transformer winding
It is connected into an entirety.
Further, the outer housing is U-shaped, including inner ring, outer ring, the interconnecting piece for connecting the inner ring and outer ring, institute
Inner ring, outer ring, interconnecting piece one accommodating chamber of composition are stated, the current transformer winding is installed in the accommodating chamber.
Further, the outer housing has opening, and the transformer external current mutual inductor has cover board, the lid
Plate is placed in the opening.
Further, the transformer external current mutual inductor also has the insulation snap ring being installed on the inner ring,
The insulation snap ring is between the inner ring and the cover board.
Further, the external mutual inductor of the transformer has the stainless steel waterproof gland head for being installed on the terminal box.
Further, the outer housing, current transformer winding, cover board, insulation snap ring are fixed and are connected by the epoxy resin
It connects.
Further, the transformer external current mutual inductor also has several installation bottoms for being installed on the outer housing
Foot and grounding base.
Furthermore the external current mutual inductor in the utility model, has several advantages that
1. transformer external current mutual inductor is located at the outside of transformer, not by the limit in the inside transformer space
System, using outside power transformer enclosure, can freely be sized, and not limited by seat is increased；
2. the current transformer winding is placed in outer housing, the outer housing described in epoxy resin and the Current Mutual Inductance
Gap between device winding is filled up, dustproof and waterproof；
3. and insulation snap ring is installed between outer housing inner ring and cover board, separate outer housing and cover board.Place outer housing
Bucking current mutual inductor function.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the utility model transformer external current mutual inductor.
Fig. 2 is that transformer external current mutual inductor is along the sectional view of A-A in Fig. 1.
Fig. 3 is another structural schematic diagram of transformer external current mutual inductor in Fig. 1.
[specific embodiment]
Referring to shown in Fig. 1 to Fig. 3, giving the structural representation of transformer external current mutual inductor in the utility model
Figure.
Transformer external current mutual inductor include annular outer shell 1, the current transformer winding 2 in outer housing 1,
The cover board 9 that is placed on the outer housing 1, the epoxy resin 7 for being coated on the current transformer winding surrounding, be installed on it is described outer
Terminal box 4 outside shell 1, the stainless steel waterproof gland head 8 for being connected to the terminal box 4, the outer housing has opening, described
Cover board is placed on the opening, and the transformer external current mutual inductor has several installation bottoms being welded on the outer housing
There is lead to be connected to terminal box 4 for foot 5, grounding base 6, the current transformer winding 2, and the outer housing 4 is U-shaped, has
Inner ring, outer ring, the interconnecting piece for connecting the inner ring and outer ring, the inner ring, outer ring, interconnecting piece form an accommodating chamber, described
Current transformer winding is installed in the accommodating chamber, and the inner ring is equipped with insulation snap ring, the outer housing 1 or cover board 9
On be provided with sprue gate 10.
When the external current transformer of the transformer is installed, current transformer winding 2 is first installed on the outer housing 1
In container, lead-out wire is connected to outer housing 1, and by the installation of terminal box 4 to outer housing 1, the snap ring 3 that insulate is installed on the interior of outer housing 1
Circle, into outer housing, casting epoxy resin 7 is poured into flushes with current transformer winding, covers cover board 9, is close to cover board
Outer housing 1 continues encapsulated epoxy resin 7 from sprue gate, until filling, such outer housing 1, current transformer winding 2, edge insulator
Ring 3, cover board 9 and epoxy resin are at an entirety.Lead-out wire connects in the terminal box 4, then by stainless steel waterproof gland head 8
Installation to terminal box 4, lead-out wire is just electrically connected with external line by the stainless steel waterproof gland head 8, so far, is become
The external current transformer of depressor installs.
Transformer external current mutual inductor is located at the outside of transformer, is not limited by the inside transformer space,
It using outside power transformer enclosure, can freely be sized, not limited by seat is increased, the current transformer winding is placed
In outer housing 1, the gap between the outer housing described in epoxy resin 7 and the current transformer winding is filled up, dustproof and waterproof,
And insulation snap ring 3 is installed between outer housing inner ring and cover board, separates outer housing and cover board.It is mutual to place outer housing bucking current
Sensor function.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of transformer external current mutual inductor, the outer housing (1) including annular, the electricity in the outer housing (1)
Current transformer winding (2), the terminal box (4) being installed on outside the outer housing, the current transformer winding (2), which has, draws
Line, the lead-out wire are connected to the terminal box, which is characterized in that the transformer external mutual inductor is described with being coated on
The epoxy resin (7) of current transformer winding (2) surrounding, the epoxy resin (7) is by the outer housing, current transformer winding
(2) entirety is connected into.
2. transformer external current mutual inductor according to claim 1, which is characterized in that the outer housing is U-shaped, packet
The interconnecting piece of inner ring, outer ring, the connection inner ring and outer ring is included, the inner ring, outer ring, interconnecting piece constitute an accommodating chamber, institute
Current transformer winding (2) is stated to be installed in the accommodating chamber.
3. transformer external current mutual inductor according to claim 2, which is characterized in that the outer housing, which has, to be opened
Mouthful, the transformer external current mutual inductor has cover board (9), and the cover board is placed in the opening.
4. transformer external current mutual inductor according to claim 3, which is characterized in that the transformer external electric
Current transformer also has the insulation snap ring (3) being installed on the inner ring, and the insulation snap ring is located at the inner ring and the lid
Between plate.
5. transformer external current mutual inductor according to claim 1, which is characterized in that the external mutual inductance of transformer
Device has the stainless steel waterproof gland head (8) for being installed on the terminal box.
6. transformer external current mutual inductor according to claim 4, which is characterized in that the epoxy resin will be described
Outer housing, current transformer winding, cover board, insulation snap ring are fixedly connected.
7. transformer external current mutual inductor according to claim 1, which is characterized in that the transformer external electric
Current transformer also has several mounting feets and grounding base for being installed on the outer housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167697.1U CN208622534U (en) | 2018-07-23 | 2018-07-23 | Transformer external current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167697.1U CN208622534U (en) | 2018-07-23 | 2018-07-23 | Transformer external current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208622534U true CN208622534U (en) | 2019-03-19 |
Family
ID=65706797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821167697.1U Active CN208622534U (en) | 2018-07-23 | 2018-07-23 | Transformer external current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208622534U (en) |
-
2018
- 2018-07-23 CN CN201821167697.1U patent/CN208622534U/en active Active
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