CN203644549U - Indoor bus-type current transformer - Google Patents
Indoor bus-type current transformer Download PDFInfo
- Publication number
- CN203644549U CN203644549U CN201420019415.9U CN201420019415U CN203644549U CN 203644549 U CN203644549 U CN 203644549U CN 201420019415 U CN201420019415 U CN 201420019415U CN 203644549 U CN203644549 U CN 203644549U
- Authority
- CN
- China
- Prior art keywords
- bus
- mounting flange
- hole
- type current
- current transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
An indoor bus-type current transformer comprises a transformer body and an insulating shell. The transformer body comprises isomerism through hole inserts, the insulating shell comprises a shell body and a mounting flange, secondary wiring screws, a grounding screw and four mounting holes are arranged on the mounting flange, a protecting cover and a sealing hole screw are arranged outside the secondary wiring screws, a bus inner hole is arranged at the axis of the shell body, three uniformly-distributed and equidistant umbrella skirts are symmetrically arranged on two end faces of the shell body, a spring voltage-equalizing device is mounted on the central inner wall of the bus inner hole, the isomerism through hole inserts are arranged on the mounting holes and symmetrically protrude out of the mounting flange, and a boss is arranged on the shell body. The indoor bus-type current transformer has the advantages that creepage distance of the end portion of the shell body is effectively increased, and pollution flashover is prevented; the spring voltage-equalizing device is mounted on the central inner wall of the bus inner hole, so that discharging flashover of the bus inner hole can be eliminated beneficially; the isomerism through hole inserts are mounted on the mounting holes and symmetrically protrude out of the mounting flange, so that the mounting flange is less prone to being damaged.
Description
Technical field
The utility model relates to a kind of indoor bus-type current transformer, belongs to instrument transformer technical field.
Background technology
Indoor bus-type current transformer be in middle pressure instrument transformer as the large electric current of transformer station's (institute) incoming line cabinet for measuring, a kind of electric equipment of measurement and relaying protection.Conventional middle pressure bus-type current transformer volume is larger, and creep distance is little, and globality is poor, installs complicated; It need be placed in switch cubicle inner side and install while installation, be convenient to that high-tension cable is drawn or pillar is installed, and needs larger cross-section cable bend to waste time and energy.In addition, traditional bus-type current transformer line side end face is open plane, limited along face creepage distance, and because bus endoporus is not well all pressed measure, easily flashover, causes insulation property obviously to decline again.
Utility model content
The deficiency existing for above-mentioned technical problem, the purpose of this utility model is to provide a kind of indoor bus-type current transformer.
The technical solution of the utility model is: indoor bus-type current transformer, comprises instrument transformer device body and be arranged on the insulation crust outside instrument transformer device body; Described instrument transformer device body comprises one to four assembly, and each assembly comprises iron core, secondary coil, support, different in nature through hole inserts; Described insulation crust comprises housing and mounting flange; On described mounting flange, be provided with secondary connection screw, earthing screw, four installing holes; Described secondary connection screw outer setting has protective cover and sealing hole screw; The axle center place of described housing is provided with bus endoporus; It is characterized in that: described housing both ends of the surface are symmetrically arranged with that 3 roads are evenly distributed and the full skirt of equidistant from distance; On described bus endoporus center inner wall, spring pressure-equalizing device is installed.
Described different in nature through hole inserts is arranged on installing hole and symmetry protrudes from mounting flange.
On described housing, be provided with boss.
The utility model has the advantages that: 1, housing both ends of the surface are symmetrically arranged with that 3 roads are evenly distributed and the full skirt of equidistant from distance, can effectively strengthen shell end along face creep distance, the generation of anti-upper pollution flashover.2, owing on bus endoporus center inner wall, spring pressure-equalizing device being installed, this product is in the time being in place, high-pressure conductive row through bus endoporus contacts with spring pressure-equalizing device, and spring pressure-equalizing device is connected with inner grading ring, electric discharge flashover phenomenon that can favourable elimination bus endoporus.3, because different in nature through hole inserts is arranged on installing hole and symmetry protrudes from mounting flange, make current transformer in the time that mounting clamp is tightened to, fastening position is only limited to the different in nature inserts end face of contact, not easy damaged mounting flange, and overall mechanical strength is high.
Accompanying drawing explanation
Fig. 1 is fragmentary sectional elevation view of the present utility model.
Fig. 2 is that partial sectional view is looked on a left side of Fig. 1.
Embodiment
Now by reference to the accompanying drawings, technology contents of the present utility model is described further.
As shown in Figure 1, 2, described instrument transformer device body 1 comprises one to four assembly, and each assembly comprises iron core, secondary coil, support, different in nature through hole inserts 2; Described insulation crust comprises housing 4 and mounting flange 3; On described mounting flange 3, be provided with secondary connection screw 5, earthing screw 6, four installing holes 7; Described secondary connection screw 5 outer setting have protective cover 8 and sealing hole screw 9; The axle center place of described housing 4 is provided with bus endoporus 10; It is characterized in that: described housing 4 both ends of the surface are symmetrically arranged with that 3 roads are evenly distributed and the full skirt 11 of equidistant from distance; On described bus endoporus 10 center inner walls, spring pressure-equalizing device 12 is installed.Described different in nature through hole inserts 2 is arranged on installing hole 7 and symmetry protrudes from mounting flange 3.On described housing 4, be provided with boss 13.
Claims (3)
1. indoor bus-type current transformer, comprises instrument transformer device body (1) and is arranged on the insulation crust outside instrument transformer device body; Described instrument transformer device body (1) comprises one to four assembly, and each assembly comprises iron core, secondary coil, support, different in nature through hole inserts (2); Described insulation crust comprises housing (4) and mounting flange (3); On described mounting flange (3), be provided with secondary connection screw (5), earthing screw (6), four installing holes (7); Described secondary connection screw (5) outer setting has protective cover (8) and sealing hole screw (9); The axle center place of described housing (4) is provided with bus endoporus (10); It is characterized in that: described housing (4) both ends of the surface are symmetrically arranged with that 3 roads are evenly distributed and the full skirt of equidistant from distance (11); On described bus endoporus (10) center inner wall, spring pressure-equalizing device (12) is installed.
2. indoor bus-type current transformer according to claim 1, is characterized in that: described different in nature through hole inserts (2) is arranged on installing hole (7) above and symmetry protrudes from mounting flange (3).
3. indoor bus-type current transformer according to claim 1 and 2, is characterized in that: on described housing (4), be provided with boss (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019415.9U CN203644549U (en) | 2014-01-14 | 2014-01-14 | Indoor bus-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019415.9U CN203644549U (en) | 2014-01-14 | 2014-01-14 | Indoor bus-type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644549U true CN203644549U (en) | 2014-06-11 |
Family
ID=50875775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420019415.9U Expired - Lifetime CN203644549U (en) | 2014-01-14 | 2014-01-14 | Indoor bus-type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644549U (en) |
-
2014
- 2014-01-14 CN CN201420019415.9U patent/CN203644549U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |