CN2169904Y - Full-working-condition plateau type current transformer - Google Patents
Full-working-condition plateau type current transformer Download PDFInfo
- Publication number
- CN2169904Y CN2169904Y CN 93219017 CN93219017U CN2169904Y CN 2169904 Y CN2169904 Y CN 2169904Y CN 93219017 CN93219017 CN 93219017 CN 93219017 U CN93219017 U CN 93219017U CN 2169904 Y CN2169904 Y CN 2169904Y
- Authority
- CN
- China
- Prior art keywords
- ring flange
- shell
- current transformer
- inner chamber
- utility
- 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 - Fee Related
Links
- 238000009434 installation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010125 resin casting Methods 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to a be used as current transformer of high tension switchgear accessory. The utility model discloses the distance of shell bottom to ring flange bottom surface and the diameter of inner chamber and the pitch-row of ring flange mounting hole have been increased to increase creepage distance, be suitable for and use under plateau area and the full operating mode condition.
Description
The utility model relates to a kind of current transformer as the high-tension switch cabinet accessory.
Existing current transformer is made of shell, terminal block, contact and coil, and the outer casing underpart outside has one for the ring flange that installs and fixes usefulness, and the inside is an inner chamber.There is following shortcoming in the shell mechanism of this current transformer: 1. ring flange installing hole pitch-row and intracavity diameter are less, have only respectively about 175mm and 166mm; 2. the distance of shell bottom and ring flange bottom surface is less, only is about 24mm.So the creepage distance of this current transformer is little, can not under full operating mode (tidewater, condensation, the filth of II level) condition, use, more be not suitable for using under the full working condition in highlands.
The purpose of this utility model is that the shell mechanism to existing current transformer makes improvements, and provides a kind of both being suitable for to use under the full working condition, is suitable for the current transformer that use the highlands again.
Measure of the present utility model comprises: 1, increase distance to the 40～70mm of shell bottom and ring flange bottom surface, and 2, intracavity diameter is increased to 180～220mm, ring flange installing hole pitch-row increases to 180～220mm.
Below in conjunction with accompanying drawing the utility model is specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of terminal block part among Fig. 1 is to view.
Fig. 3 is the vertical view of the utility model (Fig. 1).
Referring to figs. 1 through Fig. 3, the utility model is by shell (1), terminal plate (2), contact (5) and line Circle consists of. Coil is positioned at the shell upper the inside. Terminal plate (2) is positioned at cover top portion. The shell profile can be by the insulating resin casting forming for closely cylindrical. It is an inner chamber (4) that there are ring flange (3), the inside in the outer casing underpart outside, and contact (5) is positioned at this inner cavity top. The diameter a of inner chamber (4) is 180～220mm. Installing hole (10) is arranged on the ring flange (3), and the pitch-row b of installing hole (10) is 180～220mm. The distance c of ring flange (3) bottom surface and shell bottom (8) is 40～70mm. Shell waist one side has a projection (6), and an installation screw (9) and secondary line binding post (7) are arranged on it.
A kind of typical embodiment of the present utility model is: shell bottom (8) are 50mm with the distance c of ring flange (3) bottom surface, and inner chamber (4) is a truncated cone-shaped, and its bottom surface diameter a is 196mm, and the pitch-row b of ring flange installing hole (10) is 200mm.All the other structures as previously described.
The utility model is owing to increased the distance of shell bottom to ring flange bottom surface and the pitch-row of ring flange installing hole, and the diameter of inner chamber, thereby has increased creepage distance.Make the utility model not only be suitable for full working condition but also be suitable for the highlands use.This product after testing, under the filthy condition of 3000 meters of height above sea level, condensation, II level, every index meets the full operating mode instrument transformer of plateau type national standard.Being suitable for the 10kv switch cubicle uses.
Claims (2)
1, a kind of current transformer is made of shell (1), terminal block (2), contact (5) and coil; Coil is positioned at the shell upper the inside, and terminal block (2) is positioned at cover top portion; It is an inner chamber (4) that there are ring flange (3), the inside in the outer casing underpart outside, and contact (5) is positioned at this top of chamber; There is installing hole (10) shell waist one side that one projection (6) is arranged on the ring flange (3), installation screw (9) and secondary line binding post (7) are arranged on it; The pitch-row b that it is characterized in that ring flange installing hole (10) is 180～220mm, and the distance c of ring flange (3) bottom surface and shell (1) bottom (8) is 40～70mm, and the diameter b of inner chamber (4) is 180～220mm.
2, according to the described current transformer of claim 1, it is characterized in that the distance c of ring flange (3) bottom surface and shell bottom (8) is 50mm, the pitch-row b of ring flange installing hole (10) is 200mm, and inner chamber (4) is a truncated cone-shaped, and its bottom surface diameter a is 196mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219017 CN2169904Y (en) | 1993-07-13 | 1993-07-13 | Full-working-condition plateau type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219017 CN2169904Y (en) | 1993-07-13 | 1993-07-13 | Full-working-condition plateau type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2169904Y true CN2169904Y (en) | 1994-06-22 |
Family
ID=33798527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219017 Expired - Fee Related CN2169904Y (en) | 1993-07-13 | 1993-07-13 | Full-working-condition plateau type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2169904Y (en) |
-
1993
- 1993-07-13 CN CN 93219017 patent/CN2169904Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |