CN202710674U - CT (Current Transformer) live-line test box - Google Patents
CT (Current Transformer) live-line test box Download PDFInfo
- Publication number
- CN202710674U CN202710674U CN 201220175037 CN201220175037U CN202710674U CN 202710674 U CN202710674 U CN 202710674U CN 201220175037 CN201220175037 CN 201220175037 CN 201220175037 U CN201220175037 U CN 201220175037U CN 202710674 U CN202710674 U CN 202710674U
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- CN
- China
- Prior art keywords
- live
- line test
- box
- fuse
- box body
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a CT (Current Transformer) live-line test box. The CT live-line test box comprises a box body, a box cover, a pressure plate type connecting piece, a CT tap wiring column, a ground wiring column, a knife switch and a fuse, wherein the box cover is arranged on the upper end of the box body and hinged with the box body; the pressure plate type connecting piece, the CT tap wiring column, the ground wiring column, the knife switch and the fuse are arranged inside the box body; the pressure plate type connecting piece and the fuse are mutually connected; and a wire inlet hole is arranged at the side wall of the box body. According to the CT live-line test box provided by the utility model, the CT tap is led into the CT live-line test box through a shielding wire from a secondary terminal interface place; through three-stage protection of the knife switch, the pressure plate type connecting piece and the fuse, safety of in-situ test can be greatly enhanced; in the process of CT live-line test, due to the existence of the fuse (breakdown and ground connection are carried out as soon as the voltage is more than 250V), open circuit of the end screen can be prevented, strong support and guarantee are provided for safely and quickly completing the CT live-line test work, and the CT live-line test box is provided with a broad promotion prospect.
Description
Technical field
The utility model relates to a kind of CT live testing box.
Background technology
Along with carrying out in a deep going way of repair based on condition of component, the full name of CT(: current transformer, all being called for short in full CT) live testing work is comparatively general, but CT live testing Comparision is dangerous, careless slightly, just easily form the end shield open circuit, form suspended voltage (approximately about 15-30kV), misoperation can damage the staff.
The utility model content
Technical problem to be solved in the utility model provides a kind of easy to use, simple in structure and safe CT live testing box.
The utility model adopts following technical scheme:
The case lid that is hinged with casing that the utility model comprises casing, be arranged at the casing upper end and be arranged at the presser type brace in the casing, end shield binding post, ground connection terminal, plug-in strip and the protective tube of CT, described presser type brace, protective tube and presser type brace interconnect, and are provided with entrance hole on the sidewall of described casing.
Good effect of the present utility model is as follows:
This device of the utility model is introduced CT live testing box from the secondary terminals interface by shielding line with the CT end shield; the utility model is by plug-in strip, pressing plate brace, the protection of protective tube three rank; greatly promote the security of site test; when carrying out the CT live testing; because protective tube (voltage namely puncture'ss ground connection greater than 250V) existence is arranged; prevent the end shield open circuit, effectively guaranteed the security in the CT live testing process.The utility model can be widely used in the CT of transformer station end shield earthing mode, provides powerful support for and ensures for the safe and efficient CT live testing work of finishing provides, and promotion prospect is very wide.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is the utility model axle side structure schematic diagram.
Embodiment
Shown in accompanying drawing 1,2, the case lid 2 that is hinged with casing 1 that the utility model comprises casing 1, be arranged at casing 1 upper end and be arranged at presser type brace 3, plug-in strip 4 and protective tube 2 in the casing 1, the end shield binding post 6 of described presser type brace 3, CT, ground connection terminal 7, protective tube 2 and presser type brace 3 interconnect, and are provided with entrance hole 5 on the sidewall of described casing 1.This device of the utility model is introduced CT live testing box from the secondary terminals interface by shielding line with the CT end shield; the utility model is by plug-in strip, pressing plate brace, the protection of protective tube three rank; greatly promote the security of site test; when carrying out the CT live testing; because protective tube (voltage namely puncture'ss ground connection greater than 250V) existence is arranged; prevent the end shield open circuit, effectively guaranteed the security in the CT live testing process.The utility model can be widely used in the CT of transformer station end shield earthing mode, provides powerful support for and ensures for the safe and efficient CT live testing work of finishing provides, and promotion prospect is very wide.
Claims (1)
1. CT live testing box, it is characterized in that it comprises casing (1), the case lid (2) that is hinged with casing (1) that is arranged at casing (1) upper end and be arranged at the presser type brace (3) in the casing (1), end shield binding post (6), ground connection terminal (7), plug-in strip (4) and the protective tube (2) of CT, described presser type brace (3), protective tube (2) and presser type brace (3) interconnect, and are provided with entrance hole (5) on the sidewall of described casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175037 CN202710674U (en) | 2012-04-24 | 2012-04-24 | CT (Current Transformer) live-line test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175037 CN202710674U (en) | 2012-04-24 | 2012-04-24 | CT (Current Transformer) live-line test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710674U true CN202710674U (en) | 2013-01-30 |
Family
ID=47590962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220175037 Expired - Fee Related CN202710674U (en) | 2012-04-24 | 2012-04-24 | CT (Current Transformer) live-line test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710674U (en) |
-
2012
- 2012-04-24 CN CN 201220175037 patent/CN202710674U/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 | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI ELECTRIC POWER CORPORATION SHIJIAZHUANG POWE Effective date: 20130410 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SHIJIAZHUANG POWER SUPPLY COMPANY Effective date: 20130410 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 050091 SHIJIAZHUANG, HEBEI PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130410 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Corporation Patentee after: Shijiazhuang Power Supply Co.,Ltd. Address before: 050091 Shijiazhuang power supply company, No. 529 Zhonghua South Street, Hebei, Shijiazhuang Patentee before: Shijiazhuang Power Supply Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20180424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |