CN204789863U - Combined current and potential transformer polarity test device - Google Patents
Combined current and potential transformer polarity test device Download PDFInfo
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- CN204789863U CN204789863U CN201520548854.3U CN201520548854U CN204789863U CN 204789863 U CN204789863 U CN 204789863U CN 201520548854 U CN201520548854 U CN 201520548854U CN 204789863 U CN204789863 U CN 204789863U
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 230000006698 induction Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a combined current and potential transformer polarity test device belongs to the technical field that mutual inductor polarity tested, the problem of the technique is solved for: the utility model provides a test accuracy is high, the interference killing feature is strong, and can be at the dark condition measuring combined current and potential transformer polarity test device of the on -the -spot light of test, the technical scheme who adopts does: a combined current and potential transformer polarity test device, includes: power U1, switch K1, emitting diode D1, emitting diode D2 and have the the direction of current flow response module of display screen, power U1's positive pole concatenates behind the switch K1 and to link to each other with combined current and potential transformer T1's once side binding post A1, power U1's negative pole links to each other with the once side binding post A2 of the the direction of current flow who has display screen response module, be applicable to electric power system technical field.
Description
Technical field
A kind of current-voltage transformer polarity test device of the utility model, belongs to the technical field of mutual inductor polarity test.
Background technology
Voltage transformer (VT) (PT) summation current transformer (CT) is the important electrical equipment of electric system; it carries the function that isolation between high and low pressure system and high pressure amount are changed to low pressure amount; in transformer station's installation, examination and technological transformation work; the checking work of mutual inductor polarity is the requisite link of relay protection staff; polarity wrong can cause measurement, measuring apparatus correctly cannot read data; also can cause relay fail or malfunction; therefore, mutual inductor polarity test has important meaning to electric system.
Conventional test mutual inductor polarity method has two kinds, the first uses mutual inductor comprehensive tester, the major function of this instrument utilizes CT no-load voltage ratio to test and exports big current, the large coil of instrument internal causes instrument overall volume large, quality weight, also have wiring complicated in addition, complex operation, poor anti jamming capability, the feature such as easily to make mistakes, even in the face of some special working environments cannot normally use, if simple test mutual inductor polarity, these problems have influence on the work efficiency of relay protection staff to a certain extent, incur loss through delay the electric power feeding time of transformer station, second method utilizes mutual inductor primary current to flow into from polar end, the feature that secondary current flows out from polar end, pointer multimeter is red, black meter pen line seals in the secondary circuit of mutual inductor, multimeter is beaten at shelves of direct voltage, then the negative pole of a joint dry cell is connected on a non-polar end binding post of mutual inductor, use a polar end binding post of positive pole " point " mutual inductor of dry cell again, the now forward current once flowed into from polar end to non-polar end of mutual inductor, observe the pointer offset direction of pointer multimeter, if pointer is from 0 to right avertence, what then the red test pencil of multimeter connect is mutual inductor secondary polarity end, what black meter pen connect is mutual inductor secondary non-polar end, this wiring is just called " positive polarity ", if pointer is from 0 to left avertence, what then the red test pencil of multimeter connect is mutual inductor secondary non-polar end, what black meter pen connect is mutual inductor secondary polarity end, this wiring is just called " negative polarity ", this method requires that 2-3 people coordinates simultaneously, higher to the cooperate degree of tester, exist time-consuming when testing mutual inductor polarity in prior art, effort, poor anti jamming capability, not easy to operate, and the problem such as cannot to use under test site light dark condition.
Utility model content
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide that a kind of testing precision is high, antijamming capability is strong, and can carry out the current-voltage transformer polarity test device measured under test site light dark condition.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of current-voltage transformer polarity test device, comprise: power supply U1, K switch 1, light emitting diode D1, light emitting diode D2 and the direction of current induction module with display screen, be connected with the primary side connection terminal A1 of current-voltage transformer T1 after the positive pole serial connection K switch 1 of described power supply U1, the negative pole of described power supply U1 is connected with the primary side connection terminal A2 of current-voltage transformer T1, described light emitting diode D1, light emitting diode D2 and direction of current induction module are attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2 respectively, the negative pole of described light emitting diode D1 is all connected with secondary side connection terminal B1 with the positive pole of light emitting diode D2.
Described device also comprises indicator type current meter S1, described indicator type current meter S1 is attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2, described K switch 1 is radio remote control switch, radio remote control switch carries out wireless connections with the remote control transmitter for launching code frequency, described K switch 1 is hand switch, described light emitting diode D1 is red light emitting diodes, described light emitting diode D2 is green LED, and described display screen is LCDs.
The present invention compared with prior art has following beneficial effect:
A kind of current-voltage transformer polarity test device of the utility model, in test process, light emitting diode D1, light emitting diode D2 utilize diode forward conducting principle, light emitting diode D1 conducting when test result is positive polarity, red light lights, light emitting diode D2 conducting when test result is negative polarity, green light lights; Direction of current induction module is when testing, the test result sensed can show on a liquid crystal display, liquid crystal display can be lighted when normal work, in addition, the utility model also comprises indicator type current meter S1, by rotating and reverse of indicator type current meter S1, represent that the test result sensed is positive polarity and negative polarity; Three kinds of test modes are measured simultaneously, ensure test accuracy, and also can use under light dark condition at the scene, greatly facilitate staff, whole device wiring is succinct, simple to operate, antijamming capability is strong, improve the work efficiency of staff, save the electric power feeding time of transformer station.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail;
Fig. 1 is structural representation of the present utility model;
In figure: 1 is direction of current induction module, and 2 is remote control transmitter.
Embodiment
As shown in Figure 1, a kind of current-voltage transformer polarity test device, comprise: power supply U1, K switch 1, light emitting diode D1, light emitting diode D2 and the direction of current induction module 1 with display screen, be connected with the primary side connection terminal A1 of current-voltage transformer T1 after the positive pole serial connection K switch 1 of described power supply U1, the negative pole of described power supply U1 is connected with the primary side connection terminal A2 of current-voltage transformer T1, described light emitting diode D1, light emitting diode D2 and direction of current induction module 1 are attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2 respectively, direction of current induction module 1 is when testing, the test result sensed can show on a liquid crystal display, display screen can be lighted when normal work, also can use under light dark condition at the scene, the negative pole of described light emitting diode D1 is all connected with secondary side connection terminal B1 with the positive pole of light emitting diode D2.
Described device also comprises indicator type current meter S1, described indicator type current meter S1 is attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2, the test result sensed respectively that rotates and reverse of pointer reometer S1 is positive polarity and negative polarity, described K switch 1 is radio remote control switch, radio remote control switch carries out wireless connections with the remote control transmitter 2 for launching code frequency, described K switch 1 is hand switch, described light emitting diode D1 is red light emitting diodes, described light emitting diode D2 is green LED, in test process, light emitting diode D1, light emitting diode D2 utilizes diode forward conducting principle, light emitting diode D1 conducting when test result is positive polarity, red light lights, light emitting diode D2 conducting when test result is negative polarity, green light lights, described display screen is LCDs.
A kind of current-voltage transformer polarity test device of the utility model, provides that a kind of testing precision is high, antijamming capability strong, and the current-voltage transformer polarity test device can measured at test site light dark condition, have substantive distinguishing features and progress; By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, also can make various change under the prerequisite not departing from the utility model aim.
Claims (7)
1. a current-voltage transformer polarity test device, it is characterized in that: comprising: power supply U1, K switch 1, light emitting diode D1, light emitting diode D2 and the direction of current induction module (1) with display screen, be connected with the primary side connection terminal A1 of current-voltage transformer T1 after the positive pole serial connection K switch 1 of described power supply U1, the negative pole of described power supply U1 is connected with the primary side connection terminal A2 of current-voltage transformer T1, described light emitting diode D1, light emitting diode D2 and direction of current induction module (1) are attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2 respectively, the negative pole of described light emitting diode D1 is all connected with secondary side connection terminal B1 with the positive pole of light emitting diode D2.
2. a kind of current-voltage transformer polarity test device according to claim 1, it is characterized in that: described device also comprises indicator type current meter S1, described indicator type current meter S1 is attempted by between the secondary side connection terminal B1 of current-voltage transformer T1 and secondary side connection terminal B2.
3. a kind of current-voltage transformer polarity test device according to claim 1, is characterized in that: described K switch 1 is radio remote control switch, and radio remote control switch carries out wireless connections with the remote control transmitter (2) for launching code frequency.
4. a kind of current-voltage transformer polarity test device according to claim 1, is characterized in that: described K switch 1 is hand switch.
5. a kind of current-voltage transformer polarity test device according to claim 1, is characterized in that: described light emitting diode D1 is red light emitting diodes.
6. a kind of current-voltage transformer polarity test device according to claim 1, is characterized in that: described light emitting diode D2 is green LED.
7. a kind of current-voltage transformer polarity test device according to claim 1, is characterized in that: described display screen is LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520548854.3U CN204789863U (en) | 2015-07-27 | 2015-07-27 | Combined current and potential transformer polarity test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520548854.3U CN204789863U (en) | 2015-07-27 | 2015-07-27 | Combined current and potential transformer polarity test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204789863U true CN204789863U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520548854.3U Expired - Fee Related CN204789863U (en) | 2015-07-27 | 2015-07-27 | Combined current and potential transformer polarity test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204789863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004963A (en) * | 2015-07-27 | 2015-10-28 | 国网山西省电力公司晋城供电公司 | Current and potential transformer polarity test device |
| CN105891664A (en) * | 2016-06-14 | 2016-08-24 | 李彦吉 | Multi-path analog loop and polarity calibration instrument |
-
2015
- 2015-07-27 CN CN201520548854.3U patent/CN204789863U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004963A (en) * | 2015-07-27 | 2015-10-28 | 国网山西省电力公司晋城供电公司 | Current and potential transformer polarity test device |
| CN105891664A (en) * | 2016-06-14 | 2016-08-24 | 李彦吉 | Multi-path analog loop and polarity calibration instrument |
| CN105891664B (en) * | 2016-06-14 | 2018-09-11 | 李彦吉 | Multi-analog loop polarity tester |
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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: 20151118 |