CN201398066Y - Current transformer quadric circuit wire sealing device - Google Patents
Current transformer quadric circuit wire sealing device Download PDFInfo
- Publication number
- CN201398066Y CN201398066Y CN2009200997700U CN200920099770U CN201398066Y CN 201398066 Y CN201398066 Y CN 201398066Y CN 2009200997700 U CN2009200997700 U CN 2009200997700U CN 200920099770 U CN200920099770 U CN 200920099770U CN 201398066 Y CN201398066 Y CN 201398066Y
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- CN
- China
- Prior art keywords
- current
- current transformer
- quadric
- sealing device
- lcd
- 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
- 238000007789 sealing Methods 0.000 title abstract 3
- 241000270728 Alligator Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a current transformer quadric circuit wire-sealing device, which mainly solves the problem of the prior art that sealing the open-circuited current transformer quadric circuit is greatly difficult. The device is characterized in that current transformers (ca1, ca2 and ca3) and triphase linkage air switches (S1-1, S2-2 and S3-3) are respectively mounted on three wires (A, B and C), and the current transformers (ca1, ca2 and ca3) are connected with an LCD-J12 digital display instrument through a current surveillance change-over switch S2. The device has the advantages of simple operation, safety and practicality, and portability.
Description
Technical field:
The utility model relates to a kind of Current Transformer Secondary open circuit detection range, particularly a kind of secondary loop of mutual inductor envelope line device.
Background technology:
When the operating Current Transformer Secondary of instrument open circuit, will be at the secondary winding two ends or the open circuit point place produce very high voltage (even can reach thousands of volts).For not influencing line load, take shorting stub secondary loop of mutual inductor to be sealed back usually temporarily, and then handle open circuit point open circuit point higher level (terminal box inner terminal row or protection screen terminal board place).
But owing to varying in size of line load, the voltage that produces in open circuit point also just is not quite similar.Load when big, the voltage that open circuit point produces is higher, if adopt shorting stub envelope current circuit this moment, moment is equivalent to high voltage two terminal shortcircuits the same.The arc light that moment produces is instrument such as hurt shorting stub then gently, and is heavy then injure staff's eyesight, skin ambustion.So the secondary loop of mutual inductor on Fengkai road also exists burden psychologically for testing crew.
The utility model content:
The purpose of this utility model is to solve the prior art of deficiency there is very big difficult problem in to(for) the secondary loop of mutual inductor on Fengkai road, a kind of secondary loop of mutual inductor envelope line device that the utility model provides, this device has simple to operate, and is safe and practical, advantage easy to carry.
The purpose of this utility model is achieved by the following technical solution: this device is at three wire (A, B, current transformer (ca1 is housed respectively C), ca2, ca3) and three link air switch (S1-1, S1-2, S1-3), and current transformer (ca1, ca2 ca3) connect the LCD-J12 digital indicator by current surveillance change over switch S2.
The utlity model has following effect: owing to take such scheme, three of this instrument links has arc-chute in the air switch, personal injury, Work tool infringement that the arc light arcing of having avoided generally causing with common shorting stub short circuit current loop method causes.The feared state of mind of having avoided testing crew on current circuit, to work; Whether the standby current loop is not intact immediately generally to use common shorting stub short circuit current loop method, and this instrument can pass through the real-time monitoring current of LCD-J12 digital indicator loop; Easy to carry.
Description of drawings:
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment:
Below in conjunction with embodiment the utility model is further described:
As shown in Figure 1, (A, B are equipped with current transformer (ca1 respectively on C) to this device at three wires, ca2, ca3) and three link air switch (S1-1, S1-2, S1-3), and current transformer (ca1, ca2 ca3) connect the LCD-J12 digital indicator by current surveillance change over switch S2.Electric wire A, B, C, N one end be in flakes, and the other end is in flakes or alligator forceps.Be terminated in flakes on the binding post, the other end is connected on the terminal board on the secondary loop of mutual inductor that is sealed.
During concrete operations, when secondary loop of mutual inductor is opened a way:
Indeterminate open circuit point is when which is gone up mutually:
During use, earlier with the three air switch (S1-1 that link, S1-2, S1-3) be placed on the branch position, the wiring that connects instrument is connected to A, B, C, on the N binding post, press and open LCD-J12 digital indicator mains switch,, select connecting line to use in flakes or alligator forceps according to terminal board model difference, respectively with line A, B, C, N is connected to the current terminal row of open circuit near on the current transformer side, close three link air switch (S1-1, S1-2, S1-3), twisting current surveillance change over switch S2, whether LCD-J12 digital indicator on have electric current show, if there is electric current to show, illustrate that secondary loop of mutual inductor seals if monitoring.At this moment, open A, the B, C, the N current terminal that are sealed and arrange the centre in flakes, break away from current circuit open circuit part, and search open circuit point.
After open circuit point disposes, connect in flakes in the middle of A, the B that will be sealed, C, the N current terminal row earlier, separately three link that (S1-1, S1-2 S1-3), remove A, B, C, N connecting line to air switch, close LCD-J12 digital indicator power supply.
Clear and definite current circuit open circuit is in that point is a certain when going up mutually:
Need single certain phase loop current of envelope.Can adopt AN, BN or CN connecting line, concrete operations are the same.
Claims (1)
1. a secondary loop of mutual inductor envelope line device comprises current transformer (ca1, ca2, ca3), the LCD-J12 digital indicator is characterized in that: at three wire (A, B is equipped with current transformer (ca1, ca2 respectively on C), ca3) and the three air switch (S1-1 that link, S1-2, S1-3), and current transformer (ca1, ca2 ca3) connects the LCD-J12 digital indicator by current surveillance change over switch S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200997700U CN201398066Y (en) | 2009-04-30 | 2009-04-30 | Current transformer quadric circuit wire sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200997700U CN201398066Y (en) | 2009-04-30 | 2009-04-30 | Current transformer quadric circuit wire sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201398066Y true CN201398066Y (en) | 2010-02-03 |
Family
ID=41620596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200997700U Expired - Fee Related CN201398066Y (en) | 2009-04-30 | 2009-04-30 | Current transformer quadric circuit wire sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201398066Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522708A (en) * | 2011-12-14 | 2012-06-27 | 保定供电公司 | Sealing current device with automatic detector |
-
2009
- 2009-04-30 CN CN2009200997700U patent/CN201398066Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522708A (en) * | 2011-12-14 | 2012-06-27 | 保定供电公司 | Sealing current device with automatic detector |
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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: STATE GRID CORPORATION OF CHINA Effective date: 20121218 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121218 Address after: 163458 Heilongjiang Province, Daqing City Ranghulu District No. 409 South Central Avenue Patentee after: Daqing Electric Power Bureau Patentee after: State Grid Corporation of China Address before: 163458 Heilongjiang Province, Daqing City Ranghulu District No. 409 South Central Avenue Patentee before: Daqing Electric Power Bureau |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20180430 |