CN105044547A - Current transformer polarity tester - Google Patents
Current transformer polarity tester Download PDFInfo
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- CN105044547A CN105044547A CN201510460028.8A CN201510460028A CN105044547A CN 105044547 A CN105044547 A CN 105044547A CN 201510460028 A CN201510460028 A CN 201510460028A CN 105044547 A CN105044547 A CN 105044547A
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- current transformer
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- power supply
- connection terminal
- polarity
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Abstract
The invention relates to a device for carrying out incorrect connection test on circuit components and specifically relates to a current transformer polarity tester. The tester comprises an upper housing and a lower housing. The upper housing and the lower housing are internally provided with a test circuit. The test circuit comprises a power supply module; the power supply module is connected in parallel with a discharge power supply; a starting switch, a potentiometer and current transformer primary side positive and negative wiring terminals are connected in series between the positive and negative electrodes of the discharge power supply; current transformer secondary side positive and negative wiring terminals are arranged corresponding to the current transformer primary side positive and negative wiring terminals respectively; test components are connected in series between the current transformer secondary side positive and negative wiring terminals; the power supply module, the discharge power supply, the potentiometer, the starting switch and the current transformer primary side positive and negative wiring terminals are fixed to the lower housing; and the test components and the current transformer secondary side positive and negative wiring terminals are arranged to the upper housing. The current transformer polarity tester is simple in structure, easy to operate, visual in test, high in accuracy, safe and reliable and labour saving and time saving.
Description
Technical field
The present invention relates to a kind of device circuit component being carried out to incorrect connecting test, be specifically related to a kind of instrument for testing polarity of current transformer.
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.
Summary of the invention
For solving the deficiency in above-mentioned technology, the object of the invention is to: provide a kind of instrument for testing polarity of current transformer, structure is simple, easy and simple to handle, and test is directly perceived, and accuracy is high, safe and reliable, time saving and energy saving.
For solving its technical matters, the technical solution used in the present invention is:
Described instrument for testing polarity of current transformer, 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 present invention 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.
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, polarity test can be carried out according to the test switch that testing requirement conducting is suitable, also can carry out the polarity test of three-phase alternating current mutual inductor.
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, according to light emitting diode bright, going out judges current transformer polarity, if light emitting diode is bright, secondary wiring of current mutual inductor correctly, otherwise, then incorrect.
Compared with prior art, the present invention has following beneficial effect:
Structure of the present invention is simple, easy and simple to handle, 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.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 electrical schematic diagram.
Fig. 2 is the embodiment of the present invention 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.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described further:
Embodiment 1:
As shown in Figure 1-2, instrument for testing polarity of current transformer of the present invention, 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 present invention 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.
Embodiment 2:
Reometer, on the basis of embodiment 1, is replaced by light emitting diode by the present embodiment, 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.
Claims (8)
1. an instrument for testing polarity of current transformer, 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), the positive and negative connection terminal of testing element (6) summation current transformer secondary side (7) is arranged on upper shell (1).
2. instrument for testing polarity of current transformer according to claim 1, is characterized in that, described current transformer primary side positive terminal serial connection test switch (8).
3. instrument for testing polarity of current transformer according to claim 1, is characterized in that, described discharge power supply (3) adopts capacitor.
4. instrument for testing polarity of current transformer 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. instrument for testing polarity of current transformer 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. instrument for testing polarity of current transformer 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. instrument for testing polarity of current transformer according to claim 1 or 5, is characterized in that, described testing element (6) adopts reometer.
8. instrument for testing polarity of current transformer 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 |
|---|---|---|---|
| CN201510460028.8A CN105044547A (en) | 2015-07-31 | 2015-07-31 | Current transformer polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460028.8A CN105044547A (en) | 2015-07-31 | 2015-07-31 | Current transformer polarity tester |
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| CN105044547A true CN105044547A (en) | 2015-11-11 |
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| CN201510460028.8A Pending CN105044547A (en) | 2015-07-31 | 2015-07-31 | Current transformer polarity tester |
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Cited By (7)
| 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 |
| CN107741551A (en) * | 2017-10-11 | 2018-02-27 | 国网宁夏电力公司吴忠供电公司 | 110kV polarity testing device of current transformer |
| CN108226846A (en) * | 2018-04-10 | 2018-06-29 | 国家电网公司 | A kind of generic polar test circuit |
| CN109298280A (en) * | 2018-10-29 | 2019-02-01 | 国网新疆电力有限公司昌吉供电公司 | Current transformer device for detecting polarity with self-test circuit |
| CN110764042A (en) * | 2019-12-03 | 2020-02-07 | 天津送变电工程有限公司 | Polarity tester for secondary circuit of remote multifunctional mutual inductor |
| CN114325507A (en) * | 2022-03-17 | 2022-04-12 | 国网山东省电力公司安丘市供电公司 | CT polarity test device |
| CN114675223A (en) * | 2022-02-22 | 2022-06-28 | 内蒙古送变电有限责任公司 | Portable chargeable type remote control polarity tester for current transformer |
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| JPH06140263A (en) * | 1992-10-22 | 1994-05-20 | Matsushita Electric Works Ltd | Current transformer and testing method thereof |
| CN201145724Y (en) * | 2008-01-16 | 2008-11-05 | 武汉大学 | Translation circuit of charge switch of ultralong wave front-impulse voltage generator |
| CN202119860U (en) * | 2011-06-28 | 2012-01-18 | 石家庄供电公司 | Current transformer polarity testing box |
| CN102901925A (en) * | 2012-10-16 | 2013-01-30 | 四川电力科学研究院 | Method for testing characteristic parameter of conversion loop of direct current circuit breaker with extra and ultra-high voltage |
| CN202975236U (en) * | 2012-12-25 | 2013-06-05 | 特变电工康嘉(沈阳)互感器有限责任公司 | Direct current method transformer polarity detector |
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| CN203838286U (en) * | 2014-05-14 | 2014-09-17 | 国网山东沂源县供电公司 | Current transformer polarity tester |
| CN204925309U (en) * | 2015-07-31 | 2015-12-30 | 国网山东沂源县供电公司 | Current transformer polarity tester |
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2015
- 2015-07-31 CN CN201510460028.8A patent/CN105044547A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06140263A (en) * | 1992-10-22 | 1994-05-20 | Matsushita Electric Works Ltd | Current transformer and testing method thereof |
| CN201145724Y (en) * | 2008-01-16 | 2008-11-05 | 武汉大学 | Translation circuit of charge switch of ultralong wave front-impulse voltage generator |
| CN202119860U (en) * | 2011-06-28 | 2012-01-18 | 石家庄供电公司 | Current transformer polarity testing box |
| CN102901925A (en) * | 2012-10-16 | 2013-01-30 | 四川电力科学研究院 | Method for testing characteristic parameter of conversion loop of direct current circuit breaker with extra and ultra-high voltage |
| CN202975236U (en) * | 2012-12-25 | 2013-06-05 | 特变电工康嘉(沈阳)互感器有限责任公司 | Direct current method transformer polarity detector |
| CN103472357A (en) * | 2013-08-23 | 2013-12-25 | 国家电网公司 | Polarity detecting device of current transformer |
| CN103968709A (en) * | 2014-04-15 | 2014-08-06 | 西南交通大学 | Coaxial coil electromagnetism propulsion system |
| CN203838286U (en) * | 2014-05-14 | 2014-09-17 | 国网山东沂源县供电公司 | Current transformer polarity tester |
| CN204925309U (en) * | 2015-07-31 | 2015-12-30 | 国网山东沂源县供电公司 | Current transformer polarity tester |
Cited By (8)
| 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 |
| CN107741551A (en) * | 2017-10-11 | 2018-02-27 | 国网宁夏电力公司吴忠供电公司 | 110kV polarity testing device of current transformer |
| CN108226846A (en) * | 2018-04-10 | 2018-06-29 | 国家电网公司 | A kind of generic polar test circuit |
| CN108226846B (en) * | 2018-04-10 | 2020-02-07 | 国家电网公司 | General polarity test circuit |
| CN109298280A (en) * | 2018-10-29 | 2019-02-01 | 国网新疆电力有限公司昌吉供电公司 | Current transformer device for detecting polarity with self-test circuit |
| CN110764042A (en) * | 2019-12-03 | 2020-02-07 | 天津送变电工程有限公司 | Polarity tester for secondary circuit of remote multifunctional mutual inductor |
| CN114675223A (en) * | 2022-02-22 | 2022-06-28 | 内蒙古送变电有限责任公司 | Portable chargeable type remote control polarity tester for current transformer |
| CN114325507A (en) * | 2022-03-17 | 2022-04-12 | 国网山东省电力公司安丘市供电公司 | CT polarity test device |
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Application publication date: 20151111 |
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