CN102445622A - Portable tester for volt-ampere characteristic of current transformer - Google Patents
Portable tester for volt-ampere characteristic of current transformer Download PDFInfo
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- CN102445622A CN102445622A CN2011104097854A CN201110409785A CN102445622A CN 102445622 A CN102445622 A CN 102445622A CN 2011104097854 A CN2011104097854 A CN 2011104097854A CN 201110409785 A CN201110409785 A CN 201110409785A CN 102445622 A CN102445622 A CN 102445622A
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- alternating current
- volt
- current transformer
- ampere characteristic
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Abstract
The invention relates to a portable tester for a volt-ampere characteristic of a current transformer; therefore, problems of complex structure, large volume, poor portability, and high labor intensity of test personnel of a current test apparatus can be effectively solved. According to a technical scheme, the tester comprises a housing; a voltage regulator T is arranged in the housing; an alternating current ammeter and an alternating current voltmeter are connected to the voltage regulator T, wherein the alternating current ammeter and the alternating current voltmeter are in parallel connection; after the parallel connection, the alternating current ammeter and the alternating current voltmeter are connected with a first socket on the housing; a second socket on the housing is connected with a power source zero line through the voltage regulator T; and a power source plug is connected on a voltage regulator. According to the invention, the tester has a small volume and can be operated conveniently and flexibly; and the design of the tester is innovation on a test apparatus for a volt-ampere characteristic of a current transformer.
Description
One, technical field
The present invention relates to electrical measuring device, particularly a kind of portable type current transformer Testing Instrument for Volt-ampere Characteristic.
Two, background technology
The existing testing apparatus of measuring the current transformer volt-ampere characteristic; Generally use converter technique; Measurement current transformer interior flux under different frequency and voltage changes; And calculate family curve and the saturation voltage flex point of current transformer under power-frequency voltage; Because existing current transformer volt-ampere characteristic proving installation needs frequency-variable module, voltage generating module, current following control module etc., cause proving installation exist volume greatly, too heavy, be unfavorable for carrying and the problem of practical applications trouble.
Three, summary of the invention
To above-mentioned situation; For overcoming the defective of prior art; The present invention's purpose just provides a kind of portable type current transformer Testing Instrument for Volt-ampere Characteristic, can effectively solve existing proving installation complex structure, big, the portable difference of volume and the big problem of tester's labour intensity.
The technical scheme of its solution is; Comprise housing; Pressure regulator T is arranged in the housing, be connected with the alternating current ammeter and the A.C. voltmeter of parallel connection on the pressure regulator T, the alternating current ammeter after the parallel connection and A.C. voltmeter link to each other with first socket on the housing; Second socket on the housing links to each other with zero-power line through pressure regulator T, is connected with attaching plug on the pressure regulator.
Volume of the present invention is little, easy to operate, flexible, is the innovation on the current transformer volt-ampere characteristic proving installation.
Four, description of drawings
Fig. 1 is a vertical view of the present invention.
Fig. 2 is the connection layout of test circuit user mode of the present invention.
Five, embodiment
Explain further details below in conjunction with the accompanying drawing specific embodiments of the invention.
Provide by Fig. 1, Fig. 2; The present invention includes housing; Pressure regulator T is arranged in the housing 1, be connected with the alternating current ammeter 2 and A.C. voltmeter 3 of parallel connection on the pressure regulator T, the alternating current ammeter 2 after the parallel connection and A.C. voltmeter 3 link to each other with first socket 4 on the housing 1; Second socket 5 on the housing links to each other with power supply through pressure regulator T, is connected with attaching plug 6 on the pressure regulator 1.
In order to guarantee result of use, two square hollow rectangle frames constituted about said housing 1 was served as reasons.
When the present invention used, pressure regulator T linked to each other with the 220V AC power through attaching plug 6, and current transformer operates mainly under the power-frequency voltage of 50Hz; Its equivalence model is that a resistance and a reactance are connected in series, and wherein resistance is less, can ignore; Therefore saturated of the magnetic flux of current transformer and its reactance value and the decision of iron core maximum flux utilize pressure regulator T that power frequency 220V voltage is changed into the required 0V to 600V of test, and first socket 4 is linked to each other with S2 with the secondary joint S1 of current transformer Ta respectively with second socket 5; Experiment electric current after the use pressure regulation generates an electromagnetic field; Change the mutual inductor internal magnetic flux, under different input voltages, the experiment electric current can produce nonlinearities change under the influence of magnetic resistance; Note the sampling point value on alternating current ammeter 2 and the A.C. voltmeter 3; Be drawn on coordinate paper, can draw the current-voltage change curve thus, and obtain the knee voltage approximate value.
Through the VA characteristic curve contrast that is generated with existing apparatus; The empirical curve maximum error is 7%; Greatly reduce error amount; It is more than 5 times that the Secondary Winding knee voltage of the different functions of current transformer differs, and portable test instrument can distinguish the Secondary Winding of different functions, practical.
Little, the convenient test of volume of the present invention, error is little, is the innovation on the current transformer volt-ampere characteristic proving installation.
Claims (2)
1. portable type current transformer Testing Instrument for Volt-ampere Characteristic; Comprise housing, it is characterized in that housing has pressure regulator T in (1); Be connected with the alternating current ammeter (2) and the A.C. voltmeter (3) of parallel connection on the pressure regulator T; Alternating current ammeter after the parallel connection (2) and A.C. voltmeter (3) link to each other with first socket (4) on the housing 1, and second socket (5) on the housing links to each other with power supply through pressure regulator T, is connected with attaching plug (6) on the pressure regulator 1.
2. portable type current transformer Testing Instrument for Volt-ampere Characteristic according to claim 1 is characterized in that, two square hollow rectangle frames constituted about said housing (1) was served as reasons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104097854A CN102445622A (en) | 2011-12-12 | 2011-12-12 | Portable tester for volt-ampere characteristic of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104097854A CN102445622A (en) | 2011-12-12 | 2011-12-12 | Portable tester for volt-ampere characteristic of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102445622A true CN102445622A (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104097854A Pending CN102445622A (en) | 2011-12-12 | 2011-12-12 | Portable tester for volt-ampere characteristic of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102445622A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305577B6 (en) * | 2014-11-28 | 2015-12-16 | České Vysoké Učení Technické V Praze Fakulta Elektrotechnická | Device to test control transformers |
| CN106093521A (en) * | 2016-06-17 | 2016-11-09 | 广州极飞电子科技有限公司 | Electric current detecting method, device and battery management system |
| CN109444616A (en) * | 2018-12-27 | 2019-03-08 | 国网河南省电力公司洛阳供电公司 | A kind of voltage transformer harmonic elimination apparatus tester using portable body structure |
| CN113567907A (en) * | 2021-08-30 | 2021-10-29 | 广东电网有限责任公司 | Detection method and device for current transformer winding, tester and storage medium |
| CN116626467A (en) * | 2023-05-31 | 2023-08-22 | 西安工程大学 | Detection method for rapidly detecting defective silicon photomultiplier chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172261A (en) * | 1997-08-27 | 1998-02-04 | 武汉国测电器公司 | Method and device for checking electric power mutual inductor |
| KR100995251B1 (en) * | 2008-07-11 | 2010-11-19 | 한국표준과학연구원 | Current transformer comparator system |
| CN202421359U (en) * | 2011-12-12 | 2012-09-05 | 河南省电力公司洛阳供电公司 | Portable tester for volt-ampere characteristics of current transformers |
-
2011
- 2011-12-12 CN CN2011104097854A patent/CN102445622A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172261A (en) * | 1997-08-27 | 1998-02-04 | 武汉国测电器公司 | Method and device for checking electric power mutual inductor |
| KR100995251B1 (en) * | 2008-07-11 | 2010-11-19 | 한국표준과학연구원 | Current transformer comparator system |
| CN202421359U (en) * | 2011-12-12 | 2012-09-05 | 河南省电力公司洛阳供电公司 | Portable tester for volt-ampere characteristics of current transformers |
Non-Patent Citations (2)
| Title |
|---|
| 梁仕斌等: "如何进行电流互感器伏安特性试验", 《云南电力技术》 * |
| 袁康敏: "电流互感器伏安特性试验仪的研制", 《微计算机信息》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305577B6 (en) * | 2014-11-28 | 2015-12-16 | České Vysoké Učení Technické V Praze Fakulta Elektrotechnická | Device to test control transformers |
| CN106093521A (en) * | 2016-06-17 | 2016-11-09 | 广州极飞电子科技有限公司 | Electric current detecting method, device and battery management system |
| CN109444616A (en) * | 2018-12-27 | 2019-03-08 | 国网河南省电力公司洛阳供电公司 | A kind of voltage transformer harmonic elimination apparatus tester using portable body structure |
| CN109444616B (en) * | 2018-12-27 | 2023-08-25 | 国网河南省电力公司洛阳供电公司 | Voltage transformer resonance elimination device tester adopting portable box structure |
| CN113567907A (en) * | 2021-08-30 | 2021-10-29 | 广东电网有限责任公司 | Detection method and device for current transformer winding, tester and storage medium |
| CN116626467A (en) * | 2023-05-31 | 2023-08-22 | 西安工程大学 | Detection method for rapidly detecting defective silicon photomultiplier chip |
| CN116626467B (en) * | 2023-05-31 | 2024-01-05 | 西安工程大学 | Detection method for rapidly detecting defective silicon photomultiplier chip |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20120509 |