CN203232125U - Three-phase transformer CT loop polarity tester - Google Patents
Three-phase transformer CT loop polarity tester Download PDFInfo
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- CN203232125U CN203232125U CN 201320221495 CN201320221495U CN203232125U CN 203232125 U CN203232125 U CN 203232125U CN 201320221495 CN201320221495 CN 201320221495 CN 201320221495 U CN201320221495 U CN 201320221495U CN 203232125 U CN203232125 U CN 203232125U
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- 238000012360 testing method Methods 0.000 claims abstract description 97
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a three-phase transformer CT loop polarity tester, comprising a primary side test terminal and a secondary side test terminal, wherein the primary side test terminal and the secondary side test terminal are respectively connected with a primary side and a secondary side of a three-phase transformer, and the primary side test terminal is electrically connected with the secondary side test terminal. The primary side test terminal is composed of a primary side polarity test module, a primary side switching device and a three-phase current inductor; the secondary side test terminal is composed of test connection terminals, a secondary side switching device and a secondary side polarity test module, wherein the number of the test connection terminals is six, and the test connection terminals are respectively connected with the secondary side switching device. In use of the three-phase transformer CT loop polarity tester provided by the utility model, personnel behind a switch cabinet are only responsible for wiring of primary three-phase CT and do not need to cooperatively operate with personnel before the switch cabinet, so working strength is reduced; the frequency of communication between the personnel behind and before the switch cabinet is reduced, accuracy of one-time work is improved, and work efficiency and work effects are enhanced.
Description
Technical field
The utility model belongs to the relay protection test apparatus field, especially a kind of three-phase transformer CT loop polarity tester.
Background technology
For whether the polarity of verifying the CT secondary circuit is correct, before putting into operation, protective relaying device carries out the polarity test work of CT secondary bulk loop usually.Test job is cooperated by two groups of staff to be finished jointly, wherein lineup person is responsible for the wiring of CT primary side and the break-make work of direct supply behind switch cubicle, another group personnel are responsible for the reading of the pointer of the wiring of CT secondary circuit and observation test instrument before switch cubicle, just play the correctness that is just playing polarity with the anti-CT of judgement secondary circuit by what observe pointer.
In above-mentioned testing process, need the secondary circuit of each phase CT is tested, therefore need carry out the wiring work of repetition at CT one secondary circuit, the loaded down with trivial details repetition of working, and because the measurement place of the primary circuit of CT and secondary circuit is not often in same place, often need in the work to propaganda directed to communicate or link up by intercom, there is the inaccurate problem of information interchange, influences job schedule and work quality easily.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of and effectively simplifies procedures and three-phase transformer CT loop polarity tester that precision is higher.
The technical solution adopted in the utility model is:
A kind of three-phase transformer CT loop polarity tester, it is characterized in that: comprise primary side test terminal and secondary side test terminal, primary side test terminal and secondary side test terminal are connected in primary side and the secondary side of three-phase transformer respectively, Electricity Federation between primary side test terminal and the secondary side test terminal, wherein: the primary side test terminal is by primary side polarity test module, primary side switch and three-phase current inductor are formed, primary side test module input end connects with the primary side of three-phase transformer, primary side test module output terminal connects with the input end of primary side switch, the primary side switch connects with the input end of three-phase current inductor respectively, the primary side switch can be distinguished independently and each three-phase current inductor conducting, and the output terminal of three-phase current inductor connects with the secondary side test terminal by cable respectively;
The secondary side test terminal is by test connection terminal, secondary side switch and secondary side polarity test module, the test connection terminal is six and connects with the secondary side switch respectively, the output terminal of described three-phase current inductor connects with three test connection terminals respectively by cable, other three test connection terminals connect with secondary side test module input end by threephase cable respectively, and secondary side test module input end connects with the secondary side output terminal of three-phase transformer.
And, be connected with direct supply on the described secondary side switch.
And integrated data read module and the storage medium of being provided with also on the described secondary side test terminal, data read module are used for connecting display screen, and storage medium is used for record and/or derives test figure.
And wireless remote control technology control is adopted in the conducting of the input end of described primary side switch and three-phase current inductor.
Advantage of the present utility model and good effect are:
1, in the use of this three-phase transformer CT loop polarity tester, personnel only are responsible for the wiring work of a three-phase CT behind the switch cubicle, need not with switch cubicle before personnel carry out compounding practice, the working strength of reduction; Reduce two groups of personnel's communication number of times, improved the accuracy of single work, improved work efficiency and work effect.
2, this multi-functional loop-around test instrument comprises primary side test terminal and secondary side test terminal, lay respectively at primary side and the secondary side of three-phase transformer, wireless remote control technology control is adopted in the conducting of the input end of primary side switch and three-phase current inductor, highly versatile can adapt to the condition of work of most of indoor, outdoor equipment.
3, this multi-functional loop-around test instrument integrated data read module and storage medium of being provided with also can be stored test figure, and test report is analyzed and generated in convenient test back to test figure, has improved value-added content of product thus, has excellent generalization values.
Description of drawings
Fig. 1 is primary side test terminal in the utility model and the connection synoptic diagram of secondary side test terminal.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by specific embodiment, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of three-phase transformer CT loop polarity tester, comprise primary side test terminal and secondary side test terminal, the primary side test terminal is positioned at the primary side of three-phase transformer, the secondary side test terminal is positioned at the secondary side of three-phase transformer, Electricity Federation between primary side test terminal and the secondary side test terminal, the only wiring work of a responsible three-phase CT of personnel behind the switch cubicle thus, need not with switch cubicle before personnel carry out compounding practice, can test the test of CT loop polarity after primary side test terminal and secondary side test terminal connect, its connecting mode is:
The primary side test terminal is made up of primary side polarity test module, primary side switch and three-phase current inductor 1, primary side test module input end connects with the primary side of three-phase transformer, primary side test module output terminal connects with the input end of primary side switch, the primary side switch connects with the input end of three-phase current inductor respectively, the primary side switch can be distinguished independently and each three-phase current inductor conducting, and the output terminal of three-phase current inductor connects with the secondary side test terminal by cable 2 respectively;
The secondary side test terminal comprises test connection terminal 3, secondary side switch, threephase cable, secondary side polarity test module and direct supply, the test connection terminal is six and connects with the secondary side switch respectively, the output terminal of three-phase current inductor connects with three test connection terminals respectively by cable, other three test connection terminals connect with secondary side test module input end by threephase cable respectively, secondary side test module input end connects with the secondary side output terminal of three-phase transformer, is connected with direct supply on the secondary side switch.
In the present embodiment, wireless remote control technology control is adopted in the conducting of the input end of primary side switch and three-phase current inductor, because wireless remote control technology is prior art, so will not give unnecessary details in the present invention.
In the present embodiment, integrated data read module and the storage medium (not shown in the accompanying drawing) of being provided with also in the secondary side test terminal, data read module are used for connecting display screen, and storage medium is used for record and/or derives test figure.
Claims (5)
1. three-phase transformer CT loop polarity tester, it is characterized in that: comprise primary side test terminal and secondary side test terminal, primary side test terminal and secondary side test terminal are connected in primary side and the secondary side of three-phase transformer respectively, Electricity Federation between primary side test terminal and the secondary side test terminal, wherein: the primary side test terminal is by primary side polarity test module, primary side switch and three-phase current inductor are formed, primary side test module input end connects with the primary side of three-phase transformer, primary side test module output terminal connects with the input end of primary side switch, the primary side switch connects with the input end of three-phase current inductor respectively, the primary side switch can be distinguished independently and each three-phase current inductor conducting, and the output terminal of three-phase current inductor connects with the secondary side test terminal by cable respectively;
The secondary side test terminal is by test connection terminal, secondary side switch and secondary side polarity test module, the test connection terminal is six and connects with the secondary side switch respectively, the output terminal of described three-phase current inductor connects with three test connection terminals respectively by cable, other three test connection terminals connect with secondary side test module input end by threephase cable respectively, and secondary side test module input end connects with the secondary side output terminal of three-phase transformer.
2. three-phase transformer CT loop polarity tester according to claim 1 is characterized in that: be connected with direct supply on the described secondary side switch.
3. three-phase transformer CT loop polarity tester according to claim 1, it is characterized in that: described secondary side test terminal also includes the direct current resistance test module.
4. three-phase transformer CT loop polarity tester according to claim 1, it is characterized in that: integrated data read module and the storage medium of being provided with also on the described secondary side test terminal, data read module is used for connecting display screen, and storage medium is used for record and/or derives test figure.
5. three-phase transformer CT loop polarity tester according to claim 1 is characterized in that: the conducting employing wireless remote control technology control of the input end of described primary side switch and three-phase current inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320221495 CN203232125U (en) | 2013-04-27 | 2013-04-27 | Three-phase transformer CT loop polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320221495 CN203232125U (en) | 2013-04-27 | 2013-04-27 | Three-phase transformer CT loop polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232125U true CN203232125U (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320221495 Expired - Fee Related CN203232125U (en) | 2013-04-27 | 2013-04-27 | Three-phase transformer CT loop polarity tester |
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| CN (1) | CN203232125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833895A (en) * | 2015-05-08 | 2015-08-12 | 中广核工程有限公司 | Method for verifying polarity of differential protection current transformer of nuclear power plant transformer |
-
2013
- 2013-04-27 CN CN 201320221495 patent/CN203232125U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833895A (en) * | 2015-05-08 | 2015-08-12 | 中广核工程有限公司 | Method for verifying polarity of differential protection current transformer of nuclear power plant transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20190427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |