CN105527538A - Polarity test device of current transformer - Google Patents
Polarity test device of current transformer Download PDFInfo
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- CN105527538A CN105527538A CN201410521907.2A CN201410521907A CN105527538A CN 105527538 A CN105527538 A CN 105527538A CN 201410521907 A CN201410521907 A CN 201410521907A CN 105527538 A CN105527538 A CN 105527538A
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- current transformer
- polarity test
- test device
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Abstract
The invention provides a polarity test device of a current transformer. The polarity test device comprises a power supply, a plurality of primary side switches, a polarity test component and a plurality of secondary side switches, wherein the power supply comprises a negative electrode used for connecting a grounding end of a primary side coil of the current transformer; each primary side switch is connected between a positive electrode of the power supply and an incoming end used for connecting one phase of the primary side coil of the current transformer; the polarity test component has a first end and a second end, and the first end is connected with the incoming end used for connecting a grounding end of a secondary side coil of the current transformer; each secondary side switch is connected between the second end and the incoming end used for connecting one phase of the secondary side coil of the current transformer, and the number of the primary side switches is the same as that of the secondary side switches. According to the polarity test device, polarities of each current transformer can be detected by configuring the corresponding primary side coil and the corresponding secondary side coil of the current transformer, and the polarity detection efficiency of the current transformers is effectively increased.
Description
Technical field
The present invention relates to a kind of polarity test device of current transformer.
Background technology
Fig. 1 shows the circuit diagram of the method for the polarity of the DC-method measuring current mutual inductor of prior art.The positive pole of 1.5 ~ 3V dry cell is connected to the primary winding L1 of mutual inductor, the negative pole of battery meets L2, the secondary side K1 of mutual inductor connects milliammeter positive pole, negative pole meets K2, after carefully connecting the wire, milliammeter pointer positively biased of being closed by K, pulls open rear 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, and namely L1, K1 are same polarity.Be reversed polarity as the beat of pointer is contrary to the above.
In the method for testing of prior art, after complete for the polarity measurement of a current transformer, its wiring is removed, moves on on another current transformer and test, need staff many during work and workload greatly, more loaded down with trivial details.
Summary of the invention
The present invention aims to provide a kind of polarity test device improving the current transformer of testing efficiency.
To achieve these goals, the invention provides a kind of polarity test device of current transformer, comprising: power supply, there is the negative pole of the earth terminal of the first siding ring for connecting current transformer; Multiple primary side switch, each primary side switch is connected between the positive pole of power supply and the incoming end for a phase of the first siding ring that connects current transformer; Polarity test parts, have first end and the second end, and wherein, first end connects with the incoming end of the earth terminal of the second siding ring for being connected current transformer; Multiple secondary side switches, each secondary side switches is connected between the second end and the incoming end for a phase of the second siding ring that connects current transformer, and wherein, the number of primary side switch is identical with the number of secondary side switches.
Further, polarity test device also comprises controller, and controller has multiple output terminal for output switch break-make control signal, and wherein, each output terminal is connected with a primary side switch or a secondary side switches.
Further, polarity test device also comprises communication component, and communication component is connected for the input end of receiving key break-make control signal with controller.
Further, communication component is wireless communication unit.
Further, multiple primary side switch number is and the three-phase of line of electric force three one to one.
Further, multiple secondary side switches number is and the three-phase of line of electric force three one to one.
Further, polarity test parts comprise reometer.
Further, polarity test parts comprise light emitting diode.
Apply technical scheme of the present invention, by the first siding ring corresponding to each current transformer and corresponding second siding ring are set to on-state, the polarity of this current transformer can be detected, effectively improve the efficiency of current transformer Check up polarity.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the wiring diagram of the polarity test device of the current transformer of the embodiment of the present invention and the first siding ring of current transformer;
Fig. 2 show the embodiment of the present invention the polarity test device of current transformer and the wiring diagram of the second siding ring of current transformer.
Reference numeral: 1, power supply; 2, primary side switch; 3, polarity test parts; 31, first end; 32, the second end; 4, secondary side switches.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As depicted in figs. 1 and 2, the polarity test device of the current transformer of the embodiment of the present invention comprises: power supply 1, has the negative pole of the earth terminal of the first siding ring for connecting current transformer; Multiple primary side switch 2, each primary side switch 2 is connected between the positive pole of power supply and the incoming end for a phase of the first siding ring that connects current transformer; Polarity test parts 3, have first end 31 and the second end 32, and wherein, first end connects with the incoming end of the earth terminal of the second siding ring for being connected current transformer; Multiple secondary side switches 4, each secondary side switches 4 is connected between the second end and the incoming end for a phase of the second siding ring that connects current transformer, and wherein, the number of primary side switch 2 is identical with the number of secondary side switches 4.
In the present embodiment, multiple current transformer is all connected with power supply 1 with can selecting on off operating mode.At the polarity chron of measurement current transform er, a primary side switch 2 in multiple primary side switch 2 is in conducting state, power supply 1 is made to be that the first siding ring of the current transformer be connected with the primary side switch 2 being in conducting state is powered, simultaneously, the secondary side switches corresponding with the current transformer of energising is in conducting state, utilizes polarity test parts to detect the polarity of current transformer.The polarity of each current transformer is connected to test successively by controlling multiple current transformer and power supply 1.Effectively improve the efficiency of measuring current mutual inductor.Reduce the labour intensity of tester.
Preferably, polarity test device also comprises controller, and controller has multiple output terminal for output switch break-make control signal, and wherein, each output terminal is connected with a primary side switch or a secondary side switches.The lateral coil utilizing controller can realize controlling successively a current transformer obtains electric, and controls the secondary side switches conducting corresponding with obtaining electric current transformer, with the polarity of the current transformer detecting electric, further increasing detection efficiency.
Polarity test device also comprises communication component, and communication component is connected for the input end of receiving key break-make control signal with controller.By communication component can be artificial control corresponding primary side switch 2 and corresponding secondary side switches 4 conducting, to detect the polarity of corresponding current transformer.
Preferably, communication component is wireless communication unit.Can realize controlling corresponding primary side switch 2 and corresponding secondary side switches 4 conducting, to detect the polarity of corresponding current transformer by telepilot.
Preferably, multiple primary side switch number is and the three-phase of line of electric force three one to one.
The polarity test device of the current transformer in the present embodiment is for testing the polarity of 3 current transformers corresponding with three live wires A, B and C.3 primary side switches 2 are respectively relative to three live wires A, B and C.The first siding ring of the current transformer corresponding with three live wires A, B and C is all electrically connected with the positive pole of power supply 1 with can selecting on off operating mode.The negative pole of power supply is electrically connected with ground wire N.
Can also be preferably, polarity test device comprises the multiple power supplys 1 arranged correspondingly with multiple current transformer, each power supply 1 is electrically connected with corresponding current transformer, and each primary side switch 2 is serially connected with between corresponding current transformer and corresponding power supply 1.
Preferably, multiple secondary side switches number is and the three-phase of line of electric force three one to one.
The second siding ring of 3 current transformers that three live wires A, B are corresponding with C is all connected with polarity test parts 3.Between the second siding ring that 3 secondary side switches unit are all arranged on corresponding current transformer is connected with the first end of polarity test parts 3.Second end of polarity test parts 3 is electrically connected with ground wire N.3 secondary side switches 4 are separately positioned between corresponding current transformer and polarity test parts 3.
In the present embodiment, polarity test device is reometer.Can also preferably, adopt light emitting diode or voltage table as the polarity measurement parts of measurement current transform er.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a polarity test device for current transformer, is characterized in that, comprising:
Power supply (1), has the negative pole of the earth terminal of the first siding ring for connecting current transformer;
Multiple primary side switch (2), each described primary side switch (2) is connected between the positive pole of described power supply and the incoming end for a phase of the first siding ring that connects described current transformer;
Polarity test parts (3), have first end (31) and the second end (32), and wherein, described first end connects with the incoming end of the earth terminal of the second siding ring for being connected described current transformer;
Multiple secondary side switches (4), each described secondary side switches (4) is connected between described second end and the incoming end for a phase of the second siding ring that connects described current transformer, wherein, the number of described primary side switch (2) is identical with the number of described secondary side switches (4).
2. polarity test device according to claim 1, it is characterized in that, described polarity test device also comprises controller, described controller has multiple output terminal for output switch break-make control signal, wherein, each described output terminal is connected with a described primary side switch or a described secondary side switches.
3. polarity test device according to claim 2, is characterized in that, described polarity test device also comprises communication component, and described communication component is connected for the input end receiving described switch on and off control signal with described controller.
4. polarity test device according to claim 3, is characterized in that, described communication component is wireless communication unit.
5. polarity test device according to claim 1, is characterized in that, described multiple primary side switch number is and the three-phase of line of electric force three one to one.
6. polarity test device according to claim 5, is characterized in that, described multiple secondary side switches number is and the three-phase of line of electric force three one to one.
7. polarity test device according to any one of claim 1 to 6, is characterized in that, described polarity test parts (3) comprise reometer.
8. polarity test device according to any one of claim 1 to 6, is characterized in that, described polarity test parts (3) comprise light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521907.2A CN105527538A (en) | 2014-09-30 | 2014-09-30 | Polarity test device of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521907.2A CN105527538A (en) | 2014-09-30 | 2014-09-30 | Polarity test device of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105527538A true CN105527538A (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410521907.2A Pending CN105527538A (en) | 2014-09-30 | 2014-09-30 | Polarity test device of current transformer |
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| Country | Link |
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| CN (1) | CN105527538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167318A (en) * | 2021-11-09 | 2022-03-11 | 广西电网有限责任公司柳州供电局 | Current transformer wireless polarity judgment device and method capable of supplying power to negative control terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804072U (en) * | 2010-10-12 | 2011-04-20 | 山东电力集团公司菏泽供电公司 | Polarity test instrument for current transformer |
| CN202119860U (en) * | 2011-06-28 | 2012-01-18 | 石家庄供电公司 | Current transformer polarity testing box |
| CN202815205U (en) * | 2012-10-17 | 2013-03-20 | 沧州供电公司 | Device for improving calibration efficiency of current transformer |
| CN203133226U (en) * | 2013-04-03 | 2013-08-14 | 国家电网公司 | Polarity testing instrument for current transformer |
-
2014
- 2014-09-30 CN CN201410521907.2A patent/CN105527538A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804072U (en) * | 2010-10-12 | 2011-04-20 | 山东电力集团公司菏泽供电公司 | Polarity test instrument for current transformer |
| CN202119860U (en) * | 2011-06-28 | 2012-01-18 | 石家庄供电公司 | Current transformer polarity testing box |
| CN202815205U (en) * | 2012-10-17 | 2013-03-20 | 沧州供电公司 | Device for improving calibration efficiency of current transformer |
| CN203133226U (en) * | 2013-04-03 | 2013-08-14 | 国家电网公司 | Polarity testing instrument for current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167318A (en) * | 2021-11-09 | 2022-03-11 | 广西电网有限责任公司柳州供电局 | Current transformer wireless polarity judgment device and method capable of supplying power to negative control terminal |
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Application publication date: 20160427 |