CN201075336Y - Bipolarity multi-transformation ratio current mutual inductor - Google Patents

Bipolarity multi-transformation ratio current mutual inductor Download PDF

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Publication number
CN201075336Y
CN201075336Y CNU2007200267357U CN200720026735U CN201075336Y CN 201075336 Y CN201075336 Y CN 201075336Y CN U2007200267357 U CNU2007200267357 U CN U2007200267357U CN 200720026735 U CN200720026735 U CN 200720026735U CN 201075336 Y CN201075336 Y CN 201075336Y
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CN
China
Prior art keywords
winding
electric energy
current transformer
power
transformation ratio
Prior art date
Application number
CNU2007200267357U
Other languages
Chinese (zh)
Inventor
徐胜宽
贾磊
Original Assignee
徐胜宽
贾维波
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 徐胜宽, 贾维波 filed Critical 徐胜宽
Priority to CNU2007200267357U priority Critical patent/CN201075336Y/en
Application granted granted Critical
Publication of CN201075336Y publication Critical patent/CN201075336Y/en

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Abstract

A bipolar multi-transformation ratio current transformer pertains to the field of power monitoring current transformer and comprises a shell. The utility model is characterized in that: the inside of the shell is provided with a plurality of parallel iron cores which are respectively wound with secondary windings with different rotation directions and the secondary windings are provided with two or more taps. The number of iron cores, the winding direction of the secondary windings and the taps are arranged according to need to meet different requirements of measurement. When the power cable going through the iron core transmits power positively, the first secondary winding is applied to inducing current and measuring electric energy and when the power cable transmits power reversely, another secondary winding is applied to inducing current and measuring electric energy; taps are arranged to increase transformation ratio and different polar and transformation ratio are realized in the same current transformer, which meets power supply as well as measurement of electric energy for power consumers. The utility model has the advantages of simple structure, convenient application, low cost and accurate measurement.

Description

Bipolarity polytropic ratio current transformer
Technical field
The utility model relates to a kind of bipolarity polytropic ratio current transformer, belongs to electric-power metering current transformer field.
Background technology
Existing current transformer is made up of iron core and secondary winding.Be generally used for electric energy metrical or do the winding of current transformer of protection usefulness, comprise other winding in the same instrument transformer, the end of the same name of polarity is with showing same polarity in a flash.Generally be used as the unidirectional electric current of metering.
At the place that needs the bi-directional electric power metering, can only adopt the measuring instrument of specific function to do bidirectional measuring.And when the bidirectional current size differences was too big, traditional instrument transformer can not satisfy measuring requirement.Outer power supply stream is big such as: electricity consumption electric current is little, or the electricity consumption electric current is big and outer power supply stream is little, therefore can only select instrument transformer for use by big electric current, because the transformer error characteristic, the error of metering causes increase leaks metering when little electric current.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: the bipolarity polytropic ratio current transformer that is fit to two-way electric energy metrical is provided.
The technical scheme that its technical problem that solves the utility model adopts is: bipolarity polytropic ratio current transformer, comprise housing, it is characterized in that: enclosure interior is provided with a plurality of parallel iron cores, be wound with the secondary winding of different rotary direction on the iron core respectively, secondary winding is provided with two or more taps.
Have at least two iron cores that two different rotary direction secondary winding are housed on same current transformer, one of them and another winding are with showing opposed polarity in a flash.When the power cable forward that passes in the iron core is transmitted electricity, with first secondary winding induced current metering electric energy, when power cable is oppositely transmitted electricity, with another one secondary winding induced current metering electric energy.By tap being set, promptly on same current transformer, can realize different polarity, different no-load voltage ratios to increase no-load voltage ratio.Iron core quantity, secondary winding winding direction and tap are set as required, so that satisfy different measuring requirements, preceding two iron cores can be used for electric energy metrical, all the other iron cores are set to functions such as monitoring, protection as required.
Wherein preferred two parallel iron cores are wound with the secondary winding of opposite direction of rotation respectively on the iron core.
The number of ampere turns difference of described two secondary winding, thus different current ratios obtained.
Compared with prior art, the beneficial effect that the utility model bipolarity polytropic ratio current transformer is had is: the secondary winding of having installed two groups of (or many groups) opposed polarities in same instrument transformer, and use number of ampere turns manufacturing identical or inequality between each secondary winding, and make secondary winding realize two-way, a plurality of different current ratios that centre tap produced.Iron core quantity, secondary winding winding direction and tap are set as required, so that satisfy different measuring requirements, preceding two iron cores can be used for electric energy metrical, all the other iron cores are set to functions such as monitoring, protection as required.The utility model especially is provided with two concentric iron cores arranged side by side by enclosure interior, be wound with the secondary winding of different rotary direction on the iron core respectively, secondary winding is provided with tap, two different rotary direction secondary winding just are installed on same current transformer, and one of them and another winding are with showing opposed polarity in a flash.When the power cable forward that passes in the iron core is transmitted electricity, with first secondary winding induced current metering electric energy, when power cable is oppositely transmitted electricity,, tap is set to increase no-load voltage ratio with another one secondary winding induced current metering electric energy, on same current transformer, can realize different polarity, different no-load voltage ratios, having satisfied is that power supply is electricity consumption user's an electric energy metrical difficult problem again, simple in structure, easy to use, and it is low to have cost, the advantage of accurate measurement.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment,
Fig. 1 is a most preferred embodiment of the present utility model, wherein, and 1, housing 2,3, iron core 4, power cable 5,14, secondary winding 6,7,9,10,11,13, tap 8,12, electric energy meter.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, housing 1 inside is provided with two parallel iron cores 2,3.Clockwise coiling secondary winding 14 on the iron core 2, the initiating terminal of secondary winding 14 is provided with tap 13, twines certain required number of turn tap 11 is set, and around intact back end tap 10 is set then.Counterclockwise coiling secondary winding 5 on the iron core 3, the initiating terminal of secondary winding 5 is provided with tap 6, twines certain required number of turn tap 7 is set, and around intact back end tap 9 is set then.
During use, power cable 4 passes iron core 2,3, forms one time winding.The corresponding tap of secondary winding 14 and secondary winding 5 is with showing opposed polarity in a flash.When the tap 13 of secondary winding 14 was shown as negative polarity, the tap 9 of secondary winding 5 was shown as positive polarity.Connect electric energy meter 12 between the tap 13,10, connect electric energy meter 8 between tap 6 and the tap 9.When power cable 4 forwards that pass in iron core 2 and the iron core 3 are transmitted electricity, with secondary winding 2 induced currents metering electric energy; When power cable 4 is oppositely transmitted electricity, with secondary winding 5 induced currents metering electric energy.
By tap being set increasing no-load voltage ratio, thereby obtain different current ratios, promptly on same current transformer, can realize different polarity and different no-load voltage ratios.
Can also iron core quantity be set as required, the secondary winding winding direction is realized the conversion of a plurality of polarity so that satisfy different measuring requirements, for example 3 iron cores, 4 iron cores etc. are selectively selected functions such as being set to monitoring, protection for use.
When being applied to generate electricity the power supply facilities electric energy metrical, do not need to increase checkout equipment.Detect electric current by jumbo secondary winding 14 during power supply and be used for metering power supply electric energy.During electricity consumption, the secondary winding 5 by low capacity detects electric currents and is used to measure the electricity consumption electric energy.Avoided volume change to cause detecting the excessive drawback of error effectively.

Claims (2)

1. a bipolarity polytropic ratio current transformer comprises housing, it is characterized in that: enclosure interior is provided with a plurality of parallel iron cores, is wound with the secondary winding of different rotary direction on the iron core respectively, and secondary winding is provided with two or more taps.
2. bipolarity polytropic ratio current transformer according to claim 1 is characterized in that described enclosure interior is provided with two parallel iron cores, is wound with the secondary winding of opposite direction of rotation on the iron core respectively, and secondary winding is provided with two or more taps.
CNU2007200267357U 2007-08-22 2007-08-22 Bipolarity multi-transformation ratio current mutual inductor CN201075336Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200267357U CN201075336Y (en) 2007-08-22 2007-08-22 Bipolarity multi-transformation ratio current mutual inductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200267357U CN201075336Y (en) 2007-08-22 2007-08-22 Bipolarity multi-transformation ratio current mutual inductor

Publications (1)

Publication Number Publication Date
CN201075336Y true CN201075336Y (en) 2008-06-18

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CNU2007200267357U CN201075336Y (en) 2007-08-22 2007-08-22 Bipolarity multi-transformation ratio current mutual inductor

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Country Link
CN (1) CN201075336Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103295753A (en) * 2013-05-28 2013-09-11 山东浩特电气有限公司 Large-span high-precision composite-transformation-ratio current transformer and manufacturing method
CN104616875A (en) * 2015-02-06 2015-05-13 四川蓝讯宝迩电子科技有限公司 Cross-core type current transformer structure with multiple transformation ratios
CN104637663A (en) * 2015-03-02 2015-05-20 国网四川省电力公司成都供电公司 Integrated multi-transformation-ratio transformer and data collection method thereof
CN104701003A (en) * 2015-03-24 2015-06-10 山东钢铁股份有限公司 Electric connection loop of current transformer
CN105259382A (en) * 2015-11-19 2016-01-20 山东浩特电气有限公司 Multi-transformation ratio current transformer unified multiplying power metering method and device
WO2021000670A1 (en) * 2019-07-04 2021-01-07 南京丹迪克电力仪表有限公司 Method for preparing two-stage standard current transformer capable of implementing any change

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103295753A (en) * 2013-05-28 2013-09-11 山东浩特电气有限公司 Large-span high-precision composite-transformation-ratio current transformer and manufacturing method
CN103295753B (en) * 2013-05-28 2016-06-29 山东浩特电气有限公司 Large-span high-precision composite-transformacurrenttio currenttio transformer and manufacture method
CN104616875A (en) * 2015-02-06 2015-05-13 四川蓝讯宝迩电子科技有限公司 Cross-core type current transformer structure with multiple transformation ratios
CN104616875B (en) * 2015-02-06 2017-02-01 白静文 Cross-core type current transformer structure with multiple transformation ratios
CN104637663A (en) * 2015-03-02 2015-05-20 国网四川省电力公司成都供电公司 Integrated multi-transformation-ratio transformer and data collection method thereof
CN104701003A (en) * 2015-03-24 2015-06-10 山东钢铁股份有限公司 Electric connection loop of current transformer
CN105259382A (en) * 2015-11-19 2016-01-20 山东浩特电气有限公司 Multi-transformation ratio current transformer unified multiplying power metering method and device
WO2021000670A1 (en) * 2019-07-04 2021-01-07 南京丹迪克电力仪表有限公司 Method for preparing two-stage standard current transformer capable of implementing any change

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080618

Termination date: 20100822