CN212542143U - External current transformer of primary terminal cable - Google Patents
External current transformer of primary terminal cable Download PDFInfo
- Publication number
- CN212542143U CN212542143U CN202021426674.5U CN202021426674U CN212542143U CN 212542143 U CN212542143 U CN 212542143U CN 202021426674 U CN202021426674 U CN 202021426674U CN 212542143 U CN212542143 U CN 212542143U
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- primary terminal
- cable conductor
- cable
- current transformer
- protection casing
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Abstract
The utility model belongs to the technical field of current transformer and specifically relates to an external current transformer of primary terminal cable conductor, including expander, oil storage cabinet, insulator and primary terminal, and on the oil storage cabinet was located to primary terminal, still include cable conductor and protection casing, wherein the cable conductor winding was located the oil storage cabinet outside, and the oil storage cabinet was located to the protection casing, and the cable conductor is located in the protection casing, the cable conductor links to each other with the primary terminal that corresponds. The utility model discloses a primary cable conductor can twine multiturn as required on the oil storage cabinet, and a turn is nimble, can satisfy diversified current ratio designing requirement.
Description
Technical Field
The utility model belongs to the technical field of current transformer and specifically relates to an external current transformer of primary terminal cable conductor.
Background
The current transformer generally includes an expander, an oil conservator, a primary terminal, a porcelain bushing, and the like, wherein as shown in fig. 4, the primary terminal of the current transformer in the prior art is generally installed on the oil conservator, and one end of the primary terminal extends into the oil conservator and is connected with a component in the porcelain bushing through a cable. With the market demand becoming more and more diversified, the requirements of users also become more and more high, for example, many users require a current transformer with a low current ratio and a high voltage level or a diversified current ratio, but the prior art products are difficult to meet the requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an external current transformer of primary terminal cable conductor, primary cable conductor can twine multiturn as required on the oil storage cabinet, and a number of turns is nimble, can satisfy diversified current ratio designing requirement.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides an external current transformer of primary terminal cable conductor, includes the expander, stores up oil tank, insulator and primary terminal, and on the terminal located the oil tank, still includes cable conductor and protection casing, wherein the cable conductor winding locates the oil tank outside, and on the oil tank was located to the protection casing, and the cable conductor was located in the protection casing, the cable conductor links to each other with the primary terminal that corresponds.
The protective cover comprises a cover body and a bottom plate, wherein connecting support plates are arranged on two sides of the cover body, a mounting seat is arranged on the outer wall of the oil storage cabinet, the connecting support plates and the bottom plate on any side of the cover body are fixed on the mounting seat on the corresponding side through bolts, and a cable is arranged in the cover body.
The connecting end of the cable is provided with a rotatable connecting end plate, and the free end of the connecting end plate is fixed on the corresponding primary terminal through a bolt.
And the oil conservator is provided with a sealing element for a cable to pass through.
The utility model discloses an advantage does with positive effect:
1. the utility model discloses with the external design of primary cable conductor, primary cable conductor can twine multiturn as required on the oil storage cabinet, and a turn is nimble, can satisfy diversified current ratio designing requirement.
2. The utility model discloses be equipped with dismantled and assembled protection casing in the oil conservator outside, can open the cover body of protection casing and make things convenient for the winding cable conductor.
3. The utility model discloses be equipped with rotatable connection end plate at the link of cable conductor and primary terminal, on connection end plate free end accessible bolt fastening was in primary terminal, made things convenient for after the cable conductor winding to be connected with primary terminal.
Drawings
Figure 1 is a schematic structural diagram of the present invention,
figure 2 is a schematic view of the shield installation of figure 1,
figure 3 is a view from direction a of figure 1,
fig. 4 is a schematic diagram of primary terminal connection of a current transformer in the prior art.
The expansion device comprises an expander 1, an oil storage cabinet 2, a mounting seat 201, a primary terminal 3, a cable 4, a connecting end plate 401, a protective cover 5, a bottom plate 501, a cover body 502, a porcelain bushing 6 and a sealing element 7.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an expander 1, store up oil tank 2, insulator 6 and primary terminal 3, expander 1, store up oil tank 2 and insulator 6 connect gradually from the top down store up oil tank 2 both sides and be equipped with primary terminal 3, above-mentioned structure is the publicly known technique in this field.
As shown in fig. 1-3, the utility model discloses still include cable conductor 4 and protection casing 5, wherein the winding of cable conductor 4 is located and is stored up the oil tank 2 outside, and on the oil tank 2 was located to protection casing 5, and cable conductor 4 located in the protection casing 5, as shown in fig. 3, be equipped with the sealing element 7 that supplies cable conductor 4 to pass on storing up the oil tank 2, sealing element 7 guarantees that the oil in the oil tank 2 can not leak. The sealing element 7 is well known in the art and is a commercially available product, and in this embodiment, the sealing element 7 is a sealed conduit.
As shown in fig. 2, the protective cover 5 includes a cover body 502 and a bottom plate 501, wherein two sides of the cover body 502 are provided with connecting support plates, an upper set of mounting seats 201 and a lower set of mounting seats 201 are provided on the outer wall of the oil conservator 2 along the circumferential direction, and the connecting support plate on one side of the cover body 502 and one side of the bottom plate 501 are fixed on the mounting seats 201 on the corresponding side together through bolts. Can loosen downside bolt, upside bolt dismantlement during the winding of cable conductor 4, cover body 502 and bottom plate 501 open like this and can not break away from oil conservator 2 simultaneously again, then twine cable conductor 4 on the bottom plate 501 of protection casing 5, it is fixed to cover body 502 lock again after finishing the winding, and cable conductor 4 just is arranged in protection casing 5 this moment.
As shown in fig. 3, a rotatable connection end plate 401 is disposed at the connection end of the cable 4 and the primary terminal 3, and the free end of the connection end plate 401 is fixed on the primary terminal 3 by a bolt, so as to connect the cable 4 and the primary terminal 3. In this embodiment, the primary terminal 3 can be connected to two cables 4, wherein one cable 4 is a series-parallel cable.
The utility model discloses a theory of operation does:
the utility model discloses the cable conductor 4 that will be connected with primary terminal 3 twines in the 2 outside realization external designs of oil conservator, and cable conductor 4 can twine multiturn as required on oil conservator 2, cable conductor 4 is promptly for a wire, compares in cable conductor 4 built-in structure as among the shown prior art of figure 4, the utility model discloses a number of turns is nimble, can satisfy diversified current ratio designing requirement, and a current can realize following 0.5A ~ 400A's scope to a cable conductor 4 twines in protection casing 5, can not damage the mutual-inductor body if a short circuit damage appears.
Claims (4)
1. The utility model provides an external current transformer of primary terminal cable conductor, includes expander, oil conservator, insulator and primary terminal, and on the oil conservator was located to primary terminal, its characterized in that: including cable conductor (4) and protection casing (5), wherein the oil storage cabinet (2) outside is located in cable conductor (4) winding, and on oil storage cabinet (2) was located in protection casing (5), and cable conductor (4) were located in protection casing (5), cable conductor (4) link to each other with the primary terminal (3) that correspond.
2. The primary terminal cable external current transformer of claim 1, wherein: protection casing (5) are including the cover body (502) and bottom plate (501), wherein cover body (502) both sides are equipped with the connection extension board be equipped with mount pad (201) on oil conservator (2) outer wall, just on connection extension board and bottom plate (501) of cover body (502) arbitrary side are together fixed in mount pad (201) of corresponding side through the bolt, and cable conductor (4) are located in the cover body (502).
3. The primary terminal cable external current transformer of claim 1, wherein: the link of cable conductor (4) is equipped with rotatable connection end plate (401), just connect end plate (401) free end through the bolt fastening on corresponding primary terminal (3).
4. The primary terminal cable external current transformer of claim 1, wherein: and a sealing element (7) for the cable (4) to pass through is arranged on the oil conservator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426674.5U CN212542143U (en) | 2020-07-20 | 2020-07-20 | External current transformer of primary terminal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426674.5U CN212542143U (en) | 2020-07-20 | 2020-07-20 | External current transformer of primary terminal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212542143U true CN212542143U (en) | 2021-02-12 |
Family
ID=74517791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021426674.5U Active CN212542143U (en) | 2020-07-20 | 2020-07-20 | External current transformer of primary terminal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212542143U (en) |
-
2020
- 2020-07-20 CN CN202021426674.5U patent/CN212542143U/en active Active
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