CN205374538U - Can protect test instrument to avoid protector that influence electricity damaged - Google Patents
Can protect test instrument to avoid protector that influence electricity damaged Download PDFInfo
- Publication number
- CN205374538U CN205374538U CN201521140857.XU CN201521140857U CN205374538U CN 205374538 U CN205374538 U CN 205374538U CN 201521140857 U CN201521140857 U CN 201521140857U CN 205374538 U CN205374538 U CN 205374538U
- Authority
- CN
- China
- Prior art keywords
- tvs pipe
- terminal
- voltage
- tvs
- metal shell
- 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 27
- 230000001012 protector Effects 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 title abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 24
- 210000004899 c-terminal region Anatomy 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SBYHFKPVCBCYGV-UHFFFAOYSA-N quinuclidine Chemical compound C1CC2CCN1CC2 SBYHFKPVCBCYGV-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a can protect test instrument to avoid protector that influence electricity damaged, including metal casing, first to the 6th TVS pipe, a terminal, B terminal, C terminal and O terminal, the A terminal, the B terminal, C terminal and O terminal all set up the outside of metal casing and insulating mutually with metal casing, firstly all install in metal casing's inside and insulating mutually with metal casing to the 6th TVS pipe, a TVS pipe, the positive pole and the 2nd TVS pipe of the 3rd TVS pipe and the 5th TVS pipe, the O terminal is all connected to the negative pole of fourth TVS pipe and the 6th TVS pipe, the A terminal is all connected to the negative pole of TVS pipe and the positive pole of the 2nd TVS pipe, the B terminal is all connected to the negative pole of the 3rd TVS pipe and the positive pole of fourth TVS pipe, the C terminal is all connected to the negative pole of the 5th TVS pipe and the positive pole of the 6th TVS pipe, metal casing ground connection. The utility model discloses can prevent that the transformer from arousing that the winding recoils and leads to test instrument to damage owing to lose the electricity in DC resistance measuring.
Description
Technical field
This utility model relates to a kind of protector that test instrumentation can be protected to damage from faradism.
Background technology
In carrying out the DC Resistance Test of Transformer of 220kV and above, the test electric current passed through in Transformer Winding reaches 5-30A, if the unexpected dead electricity of test instrumentation, main transformer winding can induce very high voltage, causes instrument for measuring DC resistance scaling loss.Verifying through practical operation, associated test devices repeatedly damages in the testing ground of high voltage grade, therefore a kind of protector protecting test equipment under over-voltage condition of necessary design.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of protector that test instrumentation can be protected to damage from faradism.
Solving above-mentioned technical problem, the technical scheme that this utility model adopts is as follows:
A kind of protector that test instrumentation can be protected to damage from faradism; described test instrumentation is the instrument for measuring DC resistance for tested transformator carries out D.C. resistance test, it is characterised in that: described protector includes metal shell, the first to the 6th TVS pipe, be respectively used to connect described tested transformator the same side winding A, and connect line end, the C of line end, B that connect connects the A terminal of line end and neutral point, B terminal, C terminal and O terminal；Described A terminal, B terminal, C terminal is arranged at the outside of described metal shell and insulate mutually with described metal shell with O terminal, described first to the 6th TVS pipe is installed in the inside of described metal shell and insulate mutually with described metal shell, described first TVS pipe, the anode of the 3rd TVS pipe and the 5th TVS pipe and described second TVS pipe, the negative electrode of the 4th TVS pipe and the 6th TVS pipe is all connected with described O terminal, the negative electrode of described first TVS pipe and the anode of described second TVS pipe are all connected with described A terminal, the negative electrode of described 3rd TVS pipe and the anode of described 4th TVS pipe are all connected with described B terminal, the negative electrode of described 5th TVS pipe and the anode of described 6th TVS pipe are all connected with described C terminal, described metal shell ground connection.
As a kind of preferred implementation of the present utility model, the specification of described first to the 6th TVS pipe is identical, their steady state voltage all between 20V to 25V, specified On current is all between 10A to 15A.
As a kind of preferred implementation of the present utility model, the steady state voltage of described first to the 6th TVS pipe is 20V, specified On current is 15A.
As a kind of preferred implementation of the present utility model, the steady state voltage voltage of described first to the 6th TVS pipe is 20V, specified On current is 10A.
As a kind of preferred implementation of the present utility model, the steady state voltage of described first to the 6th TVS pipe is 25V, specified On current is 15A.
As a kind of preferred implementation of the present utility model, the steady state voltage voltage of described first to the 6th TVS pipe is 22.5V, specified On current is 12.5A.
Compared with prior art, this utility model has the advantages that
This utility model is prevented from transformator in D.C. resistance is tested owing to dead electricity causes winding recoil to cause that test instrumentation damages.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the circuit theory diagrams of the novel protector of this use.
Detailed description of the invention
As it is shown in figure 1, this utility model
The protector that test instrumentation damages can be protected from faradism; test instrumentation is the instrument for measuring DC resistance for tested transformator 1 carries out D.C. resistance test, it is characterised in that: protector includes metal shell the 2, first to the 6th TVS pipe T1～T6, be respectively used to connect tested transformator 1 the same side winding A, and connect line end, the C of line end, B that connect connects the A terminal of line end and neutral point, B terminal, C terminal and O terminal；A terminal, B terminal, C terminal is arranged at the outside of metal shell 2 and insulate mutually with metal shell 2 with O terminal, first to the 6th TVS pipe T1～T6 is installed in the inside of metal shell 2 and insulate with metal shell 2 phase, first TVS pipe T1, the anode of the 3rd TVS pipe T3 and the five TVS pipe T5 and the second TVS pipe T2, the negative electrode of the 4th TVS pipe T4 and the six TVS pipe T6 is all connected with O terminal, the negative electrode of the first TVS pipe T1 and the anode of the second TVS pipe T2 are all connected with A terminal, the negative electrode of the 3rd TVS pipe T3 and the anode of the 4th TVS pipe T4 are all connected with B terminal, the negative electrode of the 5th TVS pipe T5 and the anode of the 6th TVS pipe T6 are all connected with C terminal, metal shell 2 ground connection.
One of optimal way, the specification of above-mentioned first to the 6th TVS pipe T1～T6 is identical, their steady state voltage all between 20V to 25V, specified On current is all between 10A to 15A.
One of optimal way, the steady state voltage voltage of above-mentioned first to the 6th TVS pipe T1～T6 is 20V, specified On current electric current is 15A.
One of optimal way, the steady state voltage voltage of above-mentioned first to the 6th TVS pipe T1～T6 is 20V, specified On current electric current is 10A.
One of optimal way, the steady state voltage voltage of above-mentioned first to the 6th TVS pipe T1～T6 is 25V, specified On current electric current is 15A.
One of optimal way, the steady state voltage voltage of above-mentioned first to the 6th TVS pipe T1～T6 is 22.5V, specified On current electric current is 12.5A.
Occupation mode of the present utility model:
Before transformator carries out D.C. resistance test, protector three-phase A/B/C/O is respectively connected to transformator ABCO phase.Can then proceed in normal flow and carry out the experiment work of equipment, in test process, protector whole process protection is without having influence on the normal operation of test instrunment.
Operation principle is:
For in DCR of Transformer process; the overvoltage protection of dead electricity; adopt the high-power TVS pipe of electric current up to 15A; in test process, instrument occurs that in dead electricity situation, TVS pipe punctures conducting, keeps the proper flow of electric current in Transformer Winding, stable for the Kickback voltage of winding below tens volt levels; and in transformator normal DC resistance test; owing to instrument both end voltage is only several volts, TVS pipe is equivalent to off-state, without influence on measurement result.
This utility model is not limited to above-mentioned detailed description of the invention; according to foregoing; ordinary technical knowledge and customary means according to this area; without departing under the above-mentioned basic fundamental thought premise of this utility model; this utility model can also make the equivalent modifications of other various ways, replacement or change, all falls among protection domain of the present utility model.
Claims (6)
1. can protect the protector that test instrumentation damages from faradism for one kind; described test instrumentation is the instrument for measuring DC resistance for tested transformator (1) carries out D.C. resistance test, it is characterised in that: described protector includes metal shell (2), the first to the 6th TVS pipe (T1～T6), be respectively used to connect described tested transformator (1) the same side winding A, and connect line end, the C of line end, B that connect connects the A terminal of line end and neutral point, B terminal, C terminal and O terminal；nullDescribed A terminal、B terminal、C terminal is arranged at the outside of described metal shell (2) and insulate mutually with described metal shell (2) with O terminal，Described first to the 6th TVS pipe (T1～T6) is installed in the inside of described metal shell (2) and insulate mutually with described metal shell (2)，Described first TVS pipe (T1)、The anode of the 3rd TVS pipe (T3) and the 5th TVS pipe (T5) and described second TVS pipe (T2)、The negative electrode of the 4th TVS pipe (T4) and the 6th TVS pipe (T6) is all connected with described O terminal，The negative electrode of described first TVS pipe (T1) and the anode of described second TVS pipe (T2) are all connected with described A terminal，The negative electrode of described 3rd TVS pipe (T3) and the anode of described 4th TVS pipe (T4) are all connected with described B terminal，The negative electrode of described 5th TVS pipe (T5) and the anode of described 6th TVS pipe (T6) are all connected with described C terminal，Described metal shell (2) ground connection.
2. protector according to claim 1, it is characterised in that: the specification of described first to the 6th TVS pipe (T1～T6) is identical, their voltage of voltage regulation all between 20V to 25V, specified On current is all between 10A to 15A.
3. protector according to claim 1, it is characterised in that: the voltage of voltage regulation of described first to the 6th TVS pipe (T1～T6) is 20V, specified On current is 15A.
4. protector according to claim 1, it is characterised in that: the voltage of voltage regulation of described first to the 6th TVS pipe (T1～T6) is 20V, specified On current is 10A.
5. protector according to claim 1, it is characterised in that: the voltage of voltage regulation of described first to the 6th TVS pipe (T1～T6) is 25V, specified On current is 15A.
6. protector according to claim 1, it is characterised in that: the voltage of voltage regulation of described first to the 6th TVS pipe (T1～T6) is 22.5V, specified On current is 12.5A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140857.XU CN205374538U (en) | 2015-12-30 | 2015-12-30 | Can protect test instrument to avoid protector that influence electricity damaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140857.XU CN205374538U (en) | 2015-12-30 | 2015-12-30 | Can protect test instrument to avoid protector that influence electricity damaged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374538U true CN205374538U (en) | 2016-07-06 |
Family
ID=56274679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521140857.XU Expired - Fee Related CN205374538U (en) | 2015-12-30 | 2015-12-30 | Can protect test instrument to avoid protector that influence electricity damaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205374538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009231A (en) * | 2021-03-22 | 2021-06-22 | 保定天威保变电气股份有限公司 | Method for simultaneously measuring multi-winding thermal resistors during transformer temperature rise test |
-
2015
- 2015-12-30 CN CN201521140857.XU patent/CN205374538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009231A (en) * | 2021-03-22 | 2021-06-22 | 保定天威保变电气股份有限公司 | Method for simultaneously measuring multi-winding thermal resistors during transformer temperature rise test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160706 |