CN204882788U - Portable current transformer polarity test appearance - Google Patents
Portable current transformer polarity test appearance Download PDFInfo
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- CN204882788U CN204882788U CN201520574676.1U CN201520574676U CN204882788U CN 204882788 U CN204882788 U CN 204882788U CN 201520574676 U CN201520574676 U CN 201520574676U CN 204882788 U CN204882788 U CN 204882788U
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 230000006837 decompression Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
Abstract
The utility model relates to a to the device that circuit component carries out the incorrect connection test, concretely relates to portable current transformer polarity test appearance, including last, lower casing, on, the internal test circuit that sets up of inferior valve, test circuit includes power module, the power module discharge power supply that connects in parallel, starting switch concatenates between the positive negative pole of discharge power supply, potentiometre and the current transformer positive and negative binding post that once inclines, correspond the current transformer positive and negative binding post of positive and negative connecting terminal setting current transformer secondary side that once inclines, testing element concatenates between the positive and negative binding post of current transformer secondary side, a power supply modul, the discharge power supply, the potentiometre, starting switch and current transformer once incline positive and negative binding post and fix under on the casing, lower casing correspondence sets up the braces, be equipped with the decompression gasbag on the braces, testing element and the positive and negative connecting terminal setting of current transformer secondary side are on last casing. The utility model discloses simple structure, easy and simple to handle, test directly perceived, light portable, safe and reliable.
Description
Technical field
The utility model relates to a kind of device circuit component being carried out to incorrect connecting test, is specifically related to a kind of Portable current transformer polarity tester.
Background technology
The test method mainly DC-method of current measurement current transform er polarity; Namely with dry cell, its positive pole is connected to the primary side L1 of current transformer, L2 connects negative pole, the secondary side Kl of mutual inductor connects milliammeter positive pole, negative pole meets K2, moment milliammeter pointer positively biased connected by battery, after disconnection, and milliammeter pointer negative bias, illustrating that mutual inductor is connected on termination on anode with the termination being connected on milliammeter anode is same polarity, is subtractive polarity as the beat of pointer is contrary to the above.Need a people to operate in mutual inductor side and exhale during test to sing, be subject to two people synchronous, dry cell short-circuit current is little causes the little and environmental impact of reometer deflection amplitude, is easy to erroneous judgement, and two people all to change wiring several times, adopt other high capacity cell direct short-circuit easily to cause danger again.
Utility model content
For solving the deficiency in above-mentioned technology, the purpose of this utility model is: provide a kind of Portable current transformer polarity tester, and structure is simple, light portable, and test is directly perceived, and accuracy is high, safe and reliable, time saving and energy saving.
For solving its technical matters, technical solution adopted in the utility model is:
Described Portable current transformer polarity tester, comprise housing, housing comprises the upper shell and lower house that are hinged, in housing, test circuit is set, described test circuit comprises supply module, supply module parallel discharge power supply, starting switch is connected in series between discharge power supply both positive and negative polarity, the positive and negative connection terminal of potentiometer summation current transformer primary side, the positive and negative connection terminal of current transformer primary side is at least provided with one group, the positive and negative connection terminal of corresponding current mutual inductor primary side arranges the positive and negative connection terminal in Current Transformer Secondary side, testing element is serially connected between the positive and negative connection terminal in Current Transformer Secondary side, described supply module, discharge power supply, potentiometer, the positive and negative connection terminal of starting switch summation current transformer primary side is fixed on lower house, the positive and negative connection terminal of testing element summation current transformer secondary side is arranged on upper shell.
When the utility model uses, by the positive and negative connection terminal of current transformer primary side access current transformer primary side, first starting switch is opened, charged to discharge power supply by supply module, discharge power supply is connected between the positive and negative connection terminal of current transformer primary side by potentiometer, output can regulate at 1-30A, meet the polarity test of different transformation ratio current transformer, the polarity test of non-capacitive voltage transformer (VT) can be carried out simultaneously, testing element is connected between the positive and negative connection terminal in Current Transformer Secondary side, current transformer polarity is judged according to the test result of testing element, very clear, utilize electronic circuit principle, traditional at least two people's measuring current mutual inductor polarities are converted to a people operate separately, reach laborsaving, save time, the object of safety, improve work efficiency, reduce running cost, user can shift this device easily by braces, without the need to taking both hands in transfer process, and decompression air bag can obviously alleviate shoulder pressure, strengthen comfort.
Wherein, preferred version is:
Described current transformer primary side positive terminal serial connection test switch, when the positive and negative connection terminal of existence many groups current transformer primary side, can carry out polarity test according to the test switch that testing requirement conducting is suitable.
Described discharge power supply adopts capacitor, corresponding capacitor series current-limiting resistance, single 5V10F farad capacitor instantaneous discharge can reach 30A+, and the 9-11A electric discharge in 6 minutes of this device can reach 100 times, charging once can carry out 1800 about 10A discharge tests, meets test needs.
Described supply module comprises charge power supply and boost module, between charge power supply and boost module, charge switch is set, charge power supply can adopt rechargeable battery, on lower house, corresponding rechargeable battery arranges charging inlet, charge power supply voltage transitions is discharge power supply required voltage by boost module, and charges to it.
On described, lower house respectively correspondence arranges top panel and lower panel, the positive and negative connection terminal of Embedded test element summation current transformer secondary side on top panel, corresponding supply module on lower panel, potentiometer and starting switch arrange charge button respectively, potentiometer knob and start button, charge button is corresponding with charge switch, housing is opened during use, by in the access of the respective terminal of current transformer to be measured, on lower panel, and realize the charging of charge power supply to discharge power supply by the charge button arranged, the discharging action for opening discharge power supply pressed by start button, potentiometer knob is for regulating the discharge current of discharge power supply.
Arrange snap close between described upper shell and lower house, upper shell outside surface arranges handle, can be fixed after upper and lower casing closes by snap close, and by handle mobile shell, light portable.
Described testing element adopts reometer, and according to the needle deflection walking direction current transformer polarity of reometer, if reometer positively biased, secondary wiring of current mutual inductor is correct, otherwise, then incorrect.
Described testing element adopts light emitting diode, and according to the bright dark judgement current transformer polarity of light emitting diode, if light emitting diode is bright, secondary wiring of current mutual inductor is correct, otherwise, then incorrect.
Compared with prior art, the utility model has following beneficial effect:
The utility model structure is simple, light portable, and test is directly perceived, and accuracy is high, safe and reliable, time saving and energy saving.During use, by the positive and negative connection terminal of current transformer primary side access current transformer primary side, first starting switch is opened, charged to discharge power supply by supply module, discharge power supply is connected between the positive and negative connection terminal of current transformer primary side by potentiometer, output can regulate at 1-30A, meet the polarity test of different transformation ratio current transformer, testing element is connected between the positive and negative connection terminal in Current Transformer Secondary side, current transformer polarity is judged according to the test result of testing element, very clear, utilize electronic circuit principle, traditional at least two people's measuring current mutual inductor polarities are converted to a people operate separately, reach laborsaving, save time, the object of safety, improve work efficiency, reduce running cost, user can shift this device easily by braces, without the need to taking both hands in transfer process, and decompression air bag can obviously alleviate shoulder pressure, strengthen comfort.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 electrical schematic diagram.
Fig. 2 is the utility model embodiment 1 enclosure interior planimetric map.
In figure: 1, upper shell; 2, lower house; 3, discharge power supply; 4, starting switch; 5, potentiometer; 6, testing element; 7, the positive and negative connection terminal in Current Transformer Secondary side; 8, test switch; 9, current-limiting resistance; 10, top panel; 11, lower panel; 12, charge button; 13, potentiometer knob; 14, start button; 15, charge power supply; 16, boost module; 17, charge switch; 18, snap close; 19, the positive and negative connection terminal of current transformer primary side; 20, braces; 21, reduce pressure air bag.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
Embodiment 1:
As shown in Figure 1-2, Portable current transformer polarity tester described in the utility model, comprise housing, housing comprises the upper shell 1 and lower house 2 that are hinged, in housing, test circuit is set, described test circuit comprises supply module, supply module parallel discharge power supply 3, starting switch 4 is connected in series between discharge power supply 3 both positive and negative polarity, the positive and negative connection terminal 19 of potentiometer 5 summation current transformer primary side, the positive and negative connection terminal 19 of current transformer primary side is at least provided with one group, the positive and negative connection terminal of corresponding current mutual inductor primary side 19 arranges the positive and negative connection terminal 7 in Current Transformer Secondary side, testing element 6 is serially connected between the positive and negative connection terminal 7 in Current Transformer Secondary side, described supply module, discharge power supply 3, potentiometer 5, the positive and negative connection terminal 19 of starting switch 4 summation current transformer primary side is fixed on lower house 2, the positive and negative connection terminal 7 of testing element 6 summation current transformer secondary side is arranged on upper shell 1.
Wherein, current transformer primary side positive terminal serial connection test switch 8, when exist many group current transformer primary sides positive and negative connection terminal 19, polarity test can be carried out according to the test switch 8 that testing requirement conducting is suitable; Discharge power supply 3 adopts capacitor, corresponding capacitor series current-limiting resistance 9, single 5V10F farad capacitor instantaneous discharge can reach 30A+, and the 9-11A electric discharge in 6 minutes of this device can reach 100 times, charging once can carry out 1800 about 10A discharge tests, meets test needs.
Supply module comprises charge power supply 15 and boost module 16, boost module 16 adopts available circuit structure, charge switch 17 is set between charge power supply 15 and boost module 16, charge power supply 15 can adopt rechargeable battery, on lower house 2, corresponding rechargeable battery arranges charging inlet, charge power supply 15 voltage transitions is discharge power supply 3 required voltage by boost module 16, and charges to it.
On, lower house respectively correspondence arranges top panel 10 and lower panel 11, for relay testing circuit, buffering sponge is set between upper shell 1 and top panel 10 and between lower house 2 and lower panel 11, the positive and negative connection terminal 7 of Embedded test element 6 summation current transformer secondary side on top panel 10, corresponding supply module on lower panel 11, potentiometer 5 and starting switch 4 arrange charge button 12 respectively, potentiometer knob 13 and start button 14, charge button 12 is corresponding with charge switch 17, housing is opened during use, by in the access of the respective terminal of current transformer to be measured, on lower panel, and realize the charging of charge power supply 15 to discharge power supply 3 by the charge button 12 arranged, the discharging action for opening discharge power supply 3 pressed by start button 14, potentiometer knob 13 is for regulating the discharge current of discharge power supply 3.
Arrange snap close 18 between upper shell 1 and lower house 2, upper shell 1 outside surface arranges handle, can be fixed after upper and lower casing closes by snap close 18, and by handle mobile shell, light portable; Testing element 6 adopts reometer, and according to the needle deflection walking direction current transformer polarity of reometer, if reometer positively biased, secondary wiring of current mutual inductor is correct, otherwise, then incorrect.
When the utility model uses, by the positive and negative connection terminal 19 of current transformer primary side access current transformer primary side, first starting switch 4 is opened, charged to discharge power supply 3 by supply module, discharge power supply 3 is connected between the positive and negative connection terminal 19 of current transformer primary side by potentiometer 5, output can regulate at 1-30A, meet the polarity test of different transformation ratio current transformer, the polarity test of non-capacitive voltage transformer (VT) can be carried out simultaneously, testing element 6 is connected between the positive and negative connection terminal 7 in Current Transformer Secondary side, current transformer polarity is judged according to the test result of testing element 6, very clear, utilize electronic circuit principle, traditional at least two people's measuring current mutual inductor polarities are converted to a people operate separately, reach laborsaving, save time, the object of safety, improve work efficiency, reduce running cost, user can shift this device easily by braces 20, without the need to taking both hands in transfer process, and decompression air bag 21 can obviously alleviate shoulder pressure, strengthen comfort, more flexible for using, braces 20 is set to detachable, realize by hook and link, hook is fixed on lower house 2, link is arranged on braces 20 two ends, decompression air bag 21 comprises several separate and close-connected sealing gas bags, each gas package space is separate, be independent of each other, after being squeezed, each gas bag deformation quantity is comparatively even, effect of easing stress is good.
Embodiment 2:
Reometer, on the basis of embodiment 1, is replaced by light emitting diode by the present embodiment, judges current transformer polarity according to the light on and off of light emitting diode, if light emitting diode is bright, secondary wiring of current mutual inductor is correct, otherwise, then incorrect.
Claims (8)
1. a Portable current transformer polarity tester, comprise housing, housing comprises the upper shell (1) and lower house (2) that are hinged, in housing, test circuit is set, it is characterized in that, described test circuit comprises supply module, supply module parallel discharge power supply (3), starting switch (4) is connected in series between discharge power supply (3) both positive and negative polarity, the positive and negative connection terminal of potentiometer (5) summation current transformer primary side (19), the positive and negative connection terminal of current transformer primary side (19) is at least provided with one group, the positive and negative connection terminal of corresponding current mutual inductor primary side (19) arranges the positive and negative connection terminal in Current Transformer Secondary side (7), testing element (6) is serially connected between the positive and negative connection terminal in Current Transformer Secondary side (7), described supply module, discharge power supply (3), potentiometer (5), the positive and negative connection terminal of starting switch (4) summation current transformer primary side (19) is fixed on lower house (2), lower house (2) outside surface arranges braces (20), braces (20) is provided with decompression air bag (21), the positive and negative connection terminal of testing element (6) summation current transformer secondary side (7) is arranged on upper shell (1).
2. Portable current transformer polarity tester according to claim 1, is characterized in that, described current transformer primary side positive terminal serial connection test switch (8).
3. Portable current transformer polarity tester according to claim 1, is characterized in that, described discharge power supply (3) adopts capacitor.
4. Portable current transformer polarity tester according to claim 1, it is characterized in that, described supply module comprises charge power supply (15) and boost module (16), arranges charge switch (17) between charge power supply (15) and boost module (16).
5. Portable current transformer polarity tester according to claim 1, it is characterized in that, described upper and lower casing respectively correspondence arranges top panel (10) and lower panel (11), the upper positive and negative connection terminal of Embedded test element (6) the summation current transformer secondary side (7) of top panel (10), lower panel (11) upper corresponding supply module, potentiometer (5) and starting switch (4) arrange charge button (12), potentiometer knob (13) and start button (14) respectively.
6. Portable current transformer polarity tester according to claim 1 or 5, it is characterized in that, arrange snap close (18) between described upper shell (1) and lower house (2), upper shell (1) outside surface arranges handle.
7. Portable current transformer polarity tester according to claim 1 or 5, is characterized in that, described testing element (6) adopts reometer.
8. Portable current transformer polarity tester according to claim 1 or 5, is characterized in that, described testing element (6) adopts light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520574676.1U CN204882788U (en) | 2015-07-31 | 2015-07-31 | Portable current transformer polarity test appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520574676.1U CN204882788U (en) | 2015-07-31 | 2015-07-31 | Portable current transformer polarity test appearance |
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| CN204882788U true CN204882788U (en) | 2015-12-16 |
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| CN201520574676.1U Active CN204882788U (en) | 2015-07-31 | 2015-07-31 | Portable current transformer polarity test appearance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643505A (en) * | 2017-10-11 | 2018-01-30 | 国网宁夏电力公司吴忠供电公司 | 110kV current transformer integrated form polarity test devices |
| CN107677915A (en) * | 2017-08-11 | 2018-02-09 | 国网山东省电力公司沂源县供电公司 | Use mutual inductor polarity measurement apparatus and its measuring method in Portable metering scene |
| CN108254710A (en) * | 2018-01-19 | 2018-07-06 | 国家电网公司 | CVT no-load voltage ratios, polarity ancillary test device |
| CN109683056A (en) * | 2019-03-06 | 2019-04-26 | 国网山东省电力公司沂源县供电公司 | A kind of portable multi-function polarity measurement device and its application method |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
-
2015
- 2015-07-31 CN CN201520574676.1U patent/CN204882788U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677915A (en) * | 2017-08-11 | 2018-02-09 | 国网山东省电力公司沂源县供电公司 | Use mutual inductor polarity measurement apparatus and its measuring method in Portable metering scene |
| CN107643505A (en) * | 2017-10-11 | 2018-01-30 | 国网宁夏电力公司吴忠供电公司 | 110kV current transformer integrated form polarity test devices |
| CN108254710A (en) * | 2018-01-19 | 2018-07-06 | 国家电网公司 | CVT no-load voltage ratios, polarity ancillary test device |
| CN109683056A (en) * | 2019-03-06 | 2019-04-26 | 国网山东省电力公司沂源县供电公司 | A kind of portable multi-function polarity measurement device and its application method |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
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