CN204834325U - It is single -phase indoor from taking fuse voltage transformer - Google Patents
It is single -phase indoor from taking fuse voltage transformer Download PDFInfo
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- CN204834325U CN204834325U CN201520615879.0U CN201520615879U CN204834325U CN 204834325 U CN204834325 U CN 204834325U CN 201520615879 U CN201520615879 U CN 201520615879U CN 204834325 U CN204834325 U CN 204834325U
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Abstract
The utility model discloses an it is single -phase indoor from taking fuse voltage transformer, including mutual -inductor ware body and insulating casing, the insulating casing top is equipped with A terminal and B terminal, and 4 recesses that insulating casing upper surface between A terminal and B terminal and both ends were provided with evenly distributed are provided with the recess on the peripheral insulating casing of A terminal and B terminal lower part, insulating casing's top is provided with A looks fuse room and B looks fuse room, and the cover has high -pressure sheath in current -limiting fuses's outside. The utility model discloses effectively strengthen between two high -pressure terminals and the high -pressure side to ground along a face creepage distance, the emergence of preventing going up the pollution flashover integrates the height, the installation is simple, the leakproofness is strong, the electric field is even, the running life is long and the stable performance is reliable.
Description
Technical field
The utility model relates to a kind of single-phase indoor and carries cable fuse voltage transformer, belongs to instrument transformer technical field.
Background technology
Electromagnetic potential transformer is low-voltage high voltage being converted to standard in middle pressure electric equipment, uses as measurement voltage signal or Based Intelligent Control power supply.The conventional connected mode of voltage transformer in middle pressure cabinet is: high-voltage busbar is connected on the high-pressure side terminal of voltage transformer by fuse, and fuse is placed in insulating barrier.This connected mode installs complexity, contact is many, there is potential potential safety hazard; And fuse exposes in atmosphere, does not have seal approach, is subject to destruction.In addition, fuse, electric connecting member are open, and high voltage electric field is concentrated, and spot and dust are easily piled up, and long-play causes insulation property obviously to decline, and has a strong impact on machine life.
Summary of the invention
For the problems referred to above, the utility model provides a kind of single-phase indoor and carries cable fuse voltage transformer.
The technical solution of the utility model is: single-phase indoor carry cable fuse voltage transformer, comprises instrument transformer device body and is arranged on the insulation crust outside instrument transformer device body; It is base plate bottom insulation crust, base plate is provided with earthing screw and four installing holes, insulation crust side is provided with secondary terminals seed cell, insulation crust top is provided with two HV Terminal, namely A terminal and B terminal, is characterized in that, described A terminal and B terminal lower portion are equipped with cone boss, insulation crust upper surface between A terminal and B terminal and both ends are provided with equally distributed 4 grooves, and the peripheral insulative shell of A terminal and B terminal lower portion is provided with groove; The top of insulation crust is provided with the fuse room of two transverse directions, i.e. A phase fuse room and B phase fuse room, and all pressures radome that wherein A phase fuse chamber interior walls is arranged is inlayed with swivel nut bolt and is connected, and swivel nut bolt is connected with A terminal; All pressures radome that B phase fuse chamber interior walls is arranged is inlayed with inserts and is connected, and inserts is connected with B terminal; A phase is provided with current limiting fuse with B phase fuse room, current limiting fuse one end is connected with Compress Spring, Compress Spring is fixed on inserts by sunk screw, and the other end of current limiting fuse coordinates fixing with swivel nut bolt by swivel nut nut, have high-voltage shield in the outer cover of current limiting fuse.
Described high-voltage shield adopts silicon rubber to make.
The utility model has the advantages that: the insulation crust 1, between two HV Terminal arranges groove, the peripheral insulative shell of HV Terminal bottom arranges groove, can effectively strengthen between two HV Terminal and high-pressure side over the ground along face creepage distance, the generation of anti-upper pollution flashover.2, the built-in fuse room of the upper design of insulation crust, the inwall of fuse room is arranged and all presses radome, make the utility model integrated height when whole machine installation, install simple, sealing is strong, electric fields uniform, service life is long and stable and reliable for performance, installs the conveniently replaced ejection current limiting fuse of Compress Spring additional.
Accompanying drawing explanation
Fig. 1 is three-dimensional structure diagram of the present utility model
Fig. 2 is that figure cuts open in the side office of Fig. 1
Fig. 3 is the top plan view of Fig. 2
In figure: 1, instrument transformer device body, 2, insulation crust, 3, base plate, 4, A terminal, 5, B terminal, 6, secondary terminals seed cell, 7, fuse room, 71, A phase fuse room, 72, B phase fuse room, 8, earthing screw, 9, installing hole, 10, high-voltage shield, 11, swivel nut bolt, 12, swivel nut nut, 13, current limiting fuse, 14, Compress Spring, 15, sunk screw, 16, all press radome, 17, groove, 18, cone boss, 19, inserts.
Embodiment
Now by reference to the accompanying drawings, technology contents of the present utility model is further described.
As shown in Figure 1, 2, 3, single-phase indoor carry the insulation crust 2 that cable fuse voltage transformer comprises instrument transformer device body 1 and is arranged on outside instrument transformer device body 1; Be base plate 3 bottom insulation crust 2, base plate 3 is provided with earthing screw 8 and four installing holes 9, insulation crust 2 side is provided with secondary terminals seed cell 6, and insulation crust 2 top is provided with two HV Terminal, i.e. A terminal 4 and B terminal 5.
A terminal 4 and B terminal 5 bottom are equipped with cone boss 18, insulation crust 2 top between A terminal 4 and B terminal 5 and insulation crust 2 end are provided with equally distributed 4 grooves 17, and the peripheral insulative shell 2 of A terminal 4 and B terminal 5 bottom is provided with groove 17; The top of insulation crust 2 is provided with the fuse room 7 of two transverse directions, i.e. A phase fuse room 71 and B phase fuse room 72;
All pressures radome 16 that A phase fuse room 71 inwall is arranged is inlayed with swivel nut bolt 11 and is connected, and swivel nut bolt 11 is connected with A terminal 4; All pressures radome 16 that B phase fuse room 72 inwall is arranged is inlayed with inserts 19 and is connected, and inserts 19 is connected with B terminal 5; A phase fuse room 71 and B phase fuse room 72 are provided with current limiting fuse 13, current limiting fuse 13 one end is connected with Compress Spring 14, Compress Spring 14 is fixed on inserts 19 by sunk screw 15, the other end of current limiting fuse 13 coordinates fixing with swivel nut bolt 11 by swivel nut nut 12, have silicon rubber to make high-voltage shield 10 in the outer cover of current limiting fuse 13.
Claims (2)
1. single-phase indoor carry cable fuse voltage transformer, comprise instrument transformer device body and are arranged on the insulation crust outside instrument transformer device body; It is base plate bottom insulation crust, base plate is provided with earthing screw and four installing holes, insulation crust side is provided with secondary terminals seed cell, insulation crust top is provided with two HV Terminal, namely A terminal and B terminal, is characterized in that, described A terminal and B terminal lower portion are equipped with cone boss, insulation crust upper surface between A terminal and B terminal and both ends are provided with equally distributed 4 grooves, and the peripheral insulative shell of A terminal and B terminal lower portion is provided with groove; The top of insulation crust is provided with the fuse room of two transverse directions, i.e. A phase fuse room and B phase fuse room, and all pressures radome that wherein A phase fuse chamber interior walls is arranged is inlayed with swivel nut bolt and is connected, and swivel nut bolt is connected with A terminal; All pressures radome that B phase fuse chamber interior walls is arranged is inlayed with inserts and is connected, and inserts is connected with B terminal; A phase is provided with current limiting fuse with B phase fuse room, current limiting fuse one end is connected with Compress Spring, Compress Spring is fixed on inserts by sunk screw, and the other end of current limiting fuse coordinates fixing with swivel nut bolt by swivel nut nut, have high-voltage shield in the outer cover of current limiting fuse.
2. single-phase indoor according to claim 1 carry cable fuse voltage transformer, it is characterized in that, described high-voltage shield adopts silicon rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520615879.0U CN204834325U (en) | 2015-08-17 | 2015-08-17 | It is single -phase indoor from taking fuse voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520615879.0U CN204834325U (en) | 2015-08-17 | 2015-08-17 | It is single -phase indoor from taking fuse voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204834325U true CN204834325U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520615879.0U Active CN204834325U (en) | 2015-08-17 | 2015-08-17 | It is single -phase indoor from taking fuse voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204834325U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298204A (en) * | 2016-11-07 | 2017-01-04 | 湖南大北互互感器有限公司 | A kind of mains transformer of built-in limiting fuse |
| CN107146702A (en) * | 2017-07-05 | 2017-09-08 | 河南森源电气股份有限公司 | Voltage transformer and its spring and inserts attachment structure |
-
2015
- 2015-08-17 CN CN201520615879.0U patent/CN204834325U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298204A (en) * | 2016-11-07 | 2017-01-04 | 湖南大北互互感器有限公司 | A kind of mains transformer of built-in limiting fuse |
| CN107146702A (en) * | 2017-07-05 | 2017-09-08 | 河南森源电气股份有限公司 | Voltage transformer and its spring and inserts attachment structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |