CN201397387Y - Portable current transformer detection device - Google Patents
Portable current transformer detection device Download PDFInfo
- Publication number
- CN201397387Y CN201397387Y CN2009200935206U CN200920093520U CN201397387Y CN 201397387 Y CN201397387 Y CN 201397387Y CN 2009200935206 U CN2009200935206 U CN 2009200935206U CN 200920093520 U CN200920093520 U CN 200920093520U CN 201397387 Y CN201397387 Y CN 201397387Y
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- current transformer
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- calibrator
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- 238000001514 detection method Methods 0.000 title abstract 2
- 230000001939 inductive effect Effects 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 26
- 230000000630 rising effect Effects 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 5
- 238000004801 process automation Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000012795 verification Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a portable current transformer detection device, which belongs to the technical field of transformers. A standard current transformer, a transformer calibrator, a currentload case, an upflow transformer and a voltage regulating power supply are compressed and mounted into a performance box. A pulse-width modulation electronic switch power supply is used for realizingthe voltage regulation of an electronic circuit, a microprocessor is used for realizing the upflow program control, a rated secondary current of the standard current transformer is reduced from 5 A to0.2 A, the current transformer calibrator with the rated working current of 0.2 A is adopted, and a 5 A/0.2 A inductive shunt is mounted at the secondary current input terminal to be tested of the calibrator, so as to enable the calibrator to measure the error of the current transformer with the secondary current of 5 A via a method of comparison. The utility model has the advantages of novel structure, portability for field use, and upflow process automation realized by the internal electronic power supply and the microprocessor, thereby reducing the labor intensity.
Description
Technical field
The utility model relates to current transformer calibrating device, and especially portable type current transformer calibrating device belongs to the mutual inductor technical field.
Background technology
Power circuit is equipped with the electric power meter that is used for trade settlement in a large number, and the current transformer that these devices use need carry out on-site proving.Existing national metrological verification regulations JJG 1021-2007 " electric power mutual-inductor " regulation, need use standard current transformer, current transformer calibrator, current capacity case, rising current transformer and voltage controller power source during calibrating, tested current transformer rated current 1% (only S level), 5%, 20%, 100,120% and rated load and following limited load under the error of measurement current transformer.Use discrete standard current transformer, mutual-inductor tester, current capacity case, rising current transformer and voltage controller power source during laboratory verification, the package unit volume is big, heavy, wiring is complicated, labour intensity is big, is unsuitable for on-the-spot the use.Though present electric current present mutual inductor on site calibration equipment on the market also can provide the error of current transformer, measuring method does not meet vertification regulation, does not have the magnitude tracing ability, can not be used for the calibrating of current transformer.
Summary of the invention
The utility model provides a kind of portable type current transformer calibrating device, laboratory current transformer calibrating device volume is big, heavy, wiring is complicated, labour intensity is big to solve, and is unsuitable for the problem that on-the-spot shortcoming of using and current mutual inductor on site calibration equipment do not have the magnitude tracing ability.The technical scheme that its technical matters that solves the utility model adopts is: by standard current transformer, current transformer calibrator, the current capacity case, rising current transformer and voltage controller power source are formed, the winding polarity end of standard current transformer CT is the P1 connection terminal, non-polar end is connected with the Secondary Winding electronegative potential terminal of rising current transformer TB, rising current transformer Secondary Winding hot end is the P2 connection terminal, a winding of rising current transformer is connected with pulse-width modulation switching power supply PWM lead-out terminal, the electric current winding 5A input end of inductive shunt ICD is connection terminal S1, common port is connection terminal Sd2,0.2A the shunting output terminal is connection terminal Sd1, the end of current capacity case Y is connection terminal S2, the other end is connected with inductive shunt common port Sd2, the standard current transformer range switch is connected with standard current transformer CT Secondary Winding polar end K1, the K terminal of current transformer calibrator HE is connected the T of current transformer calibrator with the Sd1 terminal of standard current transformer Secondary Winding polar end K1 and inductive shunt with connecting metal plate one respectively with connection metal plate two
0Terminal is connected the T of current transformer calibrator with connecting metal plate three with standard current transformer Secondary Winding non-polar end K2
XTerminal is connected D terminal ground connection with connecting metal plate four with inductive shunt Sd2 terminal.
The utility model provides a kind of portable type current transformer calibrating device, and this device satisfies calibration method and the magnitude tracing requirement of JJG 1021-2007.Device has integral structure, and use at the suitable volume and weight scene of being easy to carry.Use built-in electronic power supply and microprocessor to realize the up-flow process automation, alleviated labour intensity.
One of the beneficial effects of the utility model are to be installed in the performance box standard current transformer, mutual-inductor tester, current capacity case, rising current transformer and voltage controller power source are integrated, only need connect primary current terminals P 1, P2 and secondary current terminal S1, the S2 of calibrating installation and test product during calibrating with lead.Wiring is simple, and use is easy to carry.Two of beneficial effect is that the up-flow process can service routine be controlled, and has alleviated testing person's labour intensity greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
In Fig. 1, by standard current transformer, current transformer calibrator, the current capacity case, rising current transformer and voltage controller power source are formed, the winding polarity end of standard current transformer CT1 is the P1 connection terminal, non-polar end is connected with the Secondary Winding electronegative potential terminal of rising current transformer TB11, rising current transformer Secondary Winding hot end is the P2 connection terminal, a winding of rising current transformer is connected with pulse-width modulation switching power supply PWM10 lead-out terminal, the electric current winding 5A input end of inductive shunt ICD7 is connection terminal S1, common port is connection terminal Sd2,0.2A the shunting output terminal is connection terminal Sd1, the end of current capacity case Y8 is connection terminal S2, the other end is connected with inductive shunt common port Sd2, during the calibrating current transformer, standard current transformer range switch 2 is connected with standard current transformer CT Secondary Winding polar end K1, standard current transformer range switch 2 current ratio of putting equals the current ratio of tested current transformer and the 5A/0.2A current ratio is long-pending, the K terminal of mutual-inductor tester HE9 is connected the T of current transformer calibrator with connection metal plate 25 with the Sd1 terminal of standard current transformer Secondary Winding polar end K1 and inductive shunt with connecting metal plate 1
0Terminal is connected with standard current transformer Secondary Winding non-polar end K2 with connecting metal plate 33.The T of current transformer calibrator
XTerminal is connected D terminal ground connection with connecting metal plate 46 with inductive shunt Sd2 terminal.
Winding connection terminals P 1 of tested current transformer and P2 and Secondary Winding connection terminal S1 and S2 respectively with P1, the P2 of portable type current transformer calibration equipment and, S1, S2 be connected.
In the embodiment in figure 1, the standard current transformer rated secondary current is 0.2A, rated primary current 5A～800A, 0.02 grade of accuracy.The split ratio of inductive shunt is 5A/0.2A, 0.01 grade of accuracy.The rated current of current capacity case is 5A.The rated operational current of current transformer calibrator is 0.2A.Pulse-width modulation switching power supply 10 output AC frequency 50Hz, switching frequency 20kHz, rated output voltage 200V, rated power 1000W.Pulse-width modulation switching power supply adopts 12 bit microprocessors control, but applies the operating process coding of electric current and write non-volatile read-write internal memory during calibrating, is selected to use by the calibrating operating personnel.
In the embodiment in figure 1, after removing four blocks of connection metal plates, standard current transformer uses P1, P2 terminal and K1, K2 terminal as the current transformer of being with rising current transformer, the current capacity case uses S1, S2 terminal under Sd1, Sd2 terminal short circuit condition, current transformer CT and current capacity case Y can examine and determine by national metrological verification regulations JJG 313 " Verification of Measuring Current Transformer ".Current transformer calibrator uses K, T
0, T
XTerminal and ground terminal D can examine and determine by national metrological verification regulations JJG 169 " mutual-inductor tester vertification regulation ".Inductive shunt uses S1, Sd1, Sd2 terminal to examine and determine by national metrological verification regulations JJG 313 " Verification of Measuring Current Transformer ".Realize the requirement of calibrating installation magnitude tracing.
Claims (1)
1, a kind of portable type current transformer calibrating device, by standard current transformer, current transformer calibrator, the current capacity case, rising current transformer and voltage controller power source are formed, it is characterized in that: the winding polarity end of standard current transformer CT is the P1 connection terminal, non-polar end is connected with the Secondary Winding electronegative potential terminal of rising current transformer TB, rising current transformer Secondary Winding hot end is the P2 connection terminal, a winding of rising current transformer is connected with pulse-width modulation switching power supply PWM lead-out terminal, the electric current winding 5A input end of inductive shunt ICD is connection terminal S1, common port is connection terminal Sd2,0.2A the shunting output terminal is connection terminal Sd1, the end of current capacity case Y is connection terminal S2, the other end is connected with inductive shunt common port Sd2, the standard current transformer range switch is connected with standard current transformer CT Secondary Winding polar end K1, the K terminal of current transformer calibrator HE is connected with the Sd1 terminal of standard current transformer Secondary Winding polar end K1 and inductive shunt respectively with connection metal plate two with connecting metal plate one, the T0 terminal of current transformer calibrator is connected with standard current transformer Secondary Winding non-polar end K2 with connecting metal plate three, the Tx terminal of current transformer calibrator is connected D terminal ground connection with connecting metal plate four with inductive shunt Sd2 terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200935206U CN201397387Y (en) | 2009-04-29 | 2009-04-29 | Portable current transformer detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200935206U CN201397387Y (en) | 2009-04-29 | 2009-04-29 | Portable current transformer detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201397387Y true CN201397387Y (en) | 2010-02-03 |
Family
ID=41619907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200935206U Expired - Lifetime CN201397387Y (en) | 2009-04-29 | 2009-04-29 | Portable current transformer detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201397387Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819264A (en) * | 2010-05-10 | 2010-09-01 | 山西省机电设计研究院 | Portable type current transformer calibrating device |
| CN102445623A (en) * | 2011-12-12 | 2012-05-09 | 河南省电力公司洛阳供电公司 | Portable current transformer polarity tester |
| CN102768349A (en) * | 2012-07-11 | 2012-11-07 | 中国计量科学研究院 | Method for implementing constant current common-grounded measurement |
| CN103293507A (en) * | 2012-03-02 | 2013-09-11 | 北京瑞恒超高压电器研究所 | Online detection method of error of current transformer |
| WO2014008707A1 (en) * | 2012-07-13 | 2014-01-16 | 天门市电工仪器仪表研究所 | Ratio error self calibration system for miniature current transformer |
| CN104090254A (en) * | 2014-07-04 | 2014-10-08 | 天津市百利电气有限公司 | Current transformer process error detection device and control method |
| CN104569895A (en) * | 2013-10-28 | 2015-04-29 | 国家电网公司 | Calibration method of standard current transformer |
| CN108761375A (en) * | 2018-07-31 | 2018-11-06 | 山西互感器电测设备有限公司 | A kind of low-power consumption program control type current mutual inductor field detecting device |
| CN112068062A (en) * | 2020-09-10 | 2020-12-11 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Mutual inductor calibration system and calibration method |
-
2009
- 2009-04-29 CN CN2009200935206U patent/CN201397387Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819264A (en) * | 2010-05-10 | 2010-09-01 | 山西省机电设计研究院 | Portable type current transformer calibrating device |
| CN102445623A (en) * | 2011-12-12 | 2012-05-09 | 河南省电力公司洛阳供电公司 | Portable current transformer polarity tester |
| CN103293507B (en) * | 2012-03-02 | 2016-08-31 | 北京瑞恒超高压电器研究所(普通合伙) | The online test method of current transformer error |
| CN103293507A (en) * | 2012-03-02 | 2013-09-11 | 北京瑞恒超高压电器研究所 | Online detection method of error of current transformer |
| CN102768349A (en) * | 2012-07-11 | 2012-11-07 | 中国计量科学研究院 | Method for implementing constant current common-grounded measurement |
| CN103543428B (en) * | 2012-07-13 | 2017-01-25 | 天门市电工仪器仪表研究所 | Miniature current transformer ratio error self-calibration system |
| CN103543428A (en) * | 2012-07-13 | 2014-01-29 | 天门市电工仪器仪表研究所 | Miniature current transformer ratio error self-calibration system |
| WO2014008707A1 (en) * | 2012-07-13 | 2014-01-16 | 天门市电工仪器仪表研究所 | Ratio error self calibration system for miniature current transformer |
| CN104569895A (en) * | 2013-10-28 | 2015-04-29 | 国家电网公司 | Calibration method of standard current transformer |
| CN104090254A (en) * | 2014-07-04 | 2014-10-08 | 天津市百利电气有限公司 | Current transformer process error detection device and control method |
| CN108761375A (en) * | 2018-07-31 | 2018-11-06 | 山西互感器电测设备有限公司 | A kind of low-power consumption program control type current mutual inductor field detecting device |
| CN108761375B (en) * | 2018-07-31 | 2024-05-14 | 山西互感器电测设备有限公司 | Low-power consumption program-controlled current transformer on-site calibrating device |
| CN112068062A (en) * | 2020-09-10 | 2020-12-11 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Mutual inductor calibration system and calibration method |
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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: JILIN PROV. POWER SCIENCE INST. CO., LTD. STATE EL Effective date: 20120830 Owner name: JILIN ELECTRIC POWER SUPPLY COMPANY CHINA ELECTRIC Free format text: FORMER OWNER: JILIN PROV. POWER SCIENCE INST. CO., LTD. Effective date: 20120830 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120830 Address after: 130021 Jilin City, Changchun province people's street, No. 4433 Patentee after: Electric Power Research Institute of Jilin Electric Power Company Patentee after: Jilin Academy of Electric Power Science Patentee after: State Grid Corporation of China Address before: 130021 Jilin City, Changchun province people's street, No. 4433 Patentee before: Jilin Academy of Electric Power Science |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100203 |
|
| CX01 | Expiry of patent term |