CN203535165U - Portable current transformer polarity tester - Google Patents
Portable current transformer polarity tester Download PDFInfo
- Publication number
- CN203535165U CN203535165U CN201320730227.2U CN201320730227U CN203535165U CN 203535165 U CN203535165 U CN 203535165U CN 201320730227 U CN201320730227 U CN 201320730227U CN 203535165 U CN203535165 U CN 203535165U
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- polarity
- current transformer
- voltage
- pointer type
- duplex
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Abstract
The utility model discloses a portable current transformer polarity tester, comprising a housing body, a direct current power supply E, primary binding posts P1, P2, and secondary binding posts P1*, P2*. The polarity tester is characterized in that, a pointer type ammeter or voltmeter A is disposed in a voltage loop of the secondary binding posts P1*, P2*, and the pointer type ammeter or voltmeter A is of a bidirectional pointer type, namely, the bidirectional pointer type ammeter or voltmeter A can indicate the current direction or the voltage polarity, a duplex polarity switch device ZK is disposed between a direct current power supply E and primary binding posts P1, P2, and the duplex polarity switch device ZK is a change-over switch provided with four pairs of contact points. Compared with the prior art, the polarity tester is advantageous in that, via a simple device, polarity of a current transformer is tested, operation is very simple, and the polarity can be accurately and visually displayed.
Description
Technical field
The utility model relates to a kind of testing tool, particularly a kind of Portable current transformer polarity tester.
Belong to transformer station, industrial enterprise's current transformer polarity testing is used, refers more particularly to the current transformer polarity testing instrument of high-voltage system.
Background technology
Current transformer is the important electrical equipment of electric system, and it is bearing isolation between high and low pressure system and high pressure amount to the function of low pressure amount conversion.
In actual use, if the polarity of current transformer and wiring are incorrect, will cause protective device malfunction or tripping, serious meeting causes the accident.
When new installation current transformer and replacing Current Transformer Secondary cable, utilize the correctness of polarity test method check current transformer connection, be the requisite working routines of relay protection personnel.
Existing mutual inductor comprehensive tester possesses current transformer polarity testing function, but can only measuring current mutual inductor body electric current winding polarity, cannot be with outside secondary circuit, cannot determine the correctness of whole system polarity.
Existing test method is: need three people, a people uses dry cell series connection to carry out the positive and negative point operation of manual control at current transformer body place, and a people uses intercom and indoor occupant to contact, and indoor occupant is used pointer general-purpose to become each electric current winding polarity of test.The hidden danger that this method of testing exists: 1, manual control factor is more intense, easily causes maloperation; 2, testing tool is scattered, and it is unreliable to operate, and does not meet the requirement of safety in production; 3, the test duration long, survey probationer many.
The disclosed polarity testing device of current transformer of CN201548652U and CN202421408U, can test the polarity of current transformer by simple device, but its operation is still cumbersome, and can only show a kind of state, shows directly perceived not.
Summary of the invention
The purpose of this utility model is to provide the Portable current transformer polarity tester of the more simple and convenient and intuitive display of a kind of operation.
The purpose of this utility model realizes by following structure: comprise shell body, direct supply E, primary connection terminals P 1, P2, secondary wiring terminals P1*, P2*, it is characterized in that: secondary wiring terminals P1*, in the voltage circuit of P2*, be provided with indicator type current meter or voltage table A, and described indicator type current meter or voltage table A are two direction pointer type, can indicator current direction or two direction pointer type reometer or the voltage table of polarity of voltage, in direct supply E and primary connection terminals P 1, between P2, be provided with duplex polar converter ZK, and described duplex polar converter ZK is the switch with 4 butt contacts.
As improvement, above-mentioned primary connection terminals P 1, P2 and secondary wiring terminals P1*, P2* are preferably provided with wire clamp (8), so that when test connects current transformer is more simple and efficient.
Compared with prior art, the utility model can be tested the polarity of current transformer by simple device, and operation is very simple, and can the accurate and visual polarity that demonstrates.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 1.
Fig. 3 is the circuit diagram of the utility model embodiment 2.
Fig. 4 is the structural representation of the utility model embodiment 3.
Shown in figure: A is reometer or voltage table, D is pilot lamp, and E is direct supply, and K is power switch, and P1, P2, P1*, P2* are connection terminal, and TA is current transformer, and ZK is duplex polar converter.
1 is connection terminal, and 2 is pilot lamp, and 3 is reometer or voltage table A, and 4 is power switch, and 5 is duplex polar converter, and 6 is handle, and 7 is shell body, and 8 is wire clamp.
Embodiment
embodiment 1:with reference to Fig. 1, Fig. 2 is the structural representation of the utility model embodiment 1, comprise shell body 8, direct supply E, primary connection terminals P 1, P2, secondary wiring terminals P1*, P2*, above-mentioned connection terminal P1, P2, P1*, P2* adopts nut rotary type binding post, secondary wiring terminals P1*, in the voltage circuit of P2*, be provided with indicator type current meter, and described indicator type current meter is two direction pointer type, can indicator current direction, in direct supply E and primary connection terminals P 1, between P2, be provided with duplex polar converter ZK, and described duplex polar converter ZK is the uniselector with 4 butt contacts, by the turning handle of rotary switch, realize primary connection terminals P 1, the polarity conversion of P2.
embodiment 2:it with reference to Fig. 3, is the circuit diagram of the utility model embodiment 2, compare with embodiment 1, the difference of the present embodiment is: described duplex polar converter ZK is the sliding push type switch with 4 butt contacts, realizes the polarity of primary connection terminals P 1, P2 change by promoting slide block.
embodiment 3:with reference to Fig. 4, be the utility model embodiment 3 structural representations, compare with embodiment 2, the difference of the present embodiment is: described primary connection terminals P 1, P2 and secondary wiring terminals P1*, P2* are provided with wire clamp 8, so that when test connects current transformer is more simple and efficient.
embodiment 4:compare with embodiment 1, the difference of the present embodiment is: described primary connection terminals P 1, P2 and secondary wiring terminals P1*, P2* are provided with wire clamp 8, so that when test connects current transformer is more simple and efficient.
Claims (2)
1. a low voltage drawing-out switching carbinet avoiding misinsertion drawer, comprise shell body, direct supply E, primary connection terminals P 1, P2, secondary wiring terminals P1*, P2*, it is characterized in that: secondary wiring terminals P1*, in the voltage circuit of P2*, be provided with indicator type current meter or voltage table A, and described indicator type current meter or voltage table A are two direction pointer type, can indicator current direction or two direction pointer type reometer or the voltage table of polarity of voltage, in direct supply E and primary connection terminals P 1, between P2, be provided with duplex polar converter ZK, and described duplex polar converter ZK is the switch with 4 butt contacts.
2. low voltage drawing-out switching carbinet avoiding misinsertion drawer according to claim 1, is characterized in that: described primary connection terminals P 1, P2 and secondary wiring terminals P1*, P2* are provided with wire clamp (8), so that it is more simple and efficient to connect current transformer during test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730227.2U CN203535165U (en) | 2013-11-18 | 2013-11-18 | Portable current transformer polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320730227.2U CN203535165U (en) | 2013-11-18 | 2013-11-18 | Portable current transformer polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203535165U true CN203535165U (en) | 2014-04-09 |
Family
ID=50421359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320730227.2U Expired - Fee Related CN203535165U (en) | 2013-11-18 | 2013-11-18 | Portable current transformer polarity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203535165U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898016A (en) * | 2015-06-26 | 2015-09-09 | 国家电网公司 | Device for checking secondary circuit and polarity of current transformer |
| CN104931740A (en) * | 2015-06-23 | 2015-09-23 | 国网辽宁省电力有限公司检修分公司 | Rapid conversion device for test wiring of zero-flux CT secondary electronic module |
| CN105182173A (en) * | 2015-08-07 | 2015-12-23 | 国网山东省电力公司淄博供电公司 | Novel combined-type mutual inductor polarity tester |
| CN110286295A (en) * | 2019-05-13 | 2019-09-27 | 国家电网有限公司 | A kind of direct current feed control panel branch CT polarity test device and method |
| CN111536864A (en) * | 2020-05-07 | 2020-08-14 | 郑州上电电机科技发展有限公司 | Central polarity correction circuit and portable correction instrument |
| CN112526412A (en) * | 2020-11-17 | 2021-03-19 | 国网湖南省电力有限公司 | Method and system for testing polarity of current transformer of transformer lifting seat |
-
2013
- 2013-11-18 CN CN201320730227.2U patent/CN203535165U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931740A (en) * | 2015-06-23 | 2015-09-23 | 国网辽宁省电力有限公司检修分公司 | Rapid conversion device for test wiring of zero-flux CT secondary electronic module |
| CN104931740B (en) * | 2015-06-23 | 2018-11-16 | 国网辽宁省电力有限公司检修分公司 | Quick switching device for Zero flux CT secondary electron module test wiring |
| CN104898016A (en) * | 2015-06-26 | 2015-09-09 | 国家电网公司 | Device for checking secondary circuit and polarity of current transformer |
| CN105182173A (en) * | 2015-08-07 | 2015-12-23 | 国网山东省电力公司淄博供电公司 | Novel combined-type mutual inductor polarity tester |
| CN110286295A (en) * | 2019-05-13 | 2019-09-27 | 国家电网有限公司 | A kind of direct current feed control panel branch CT polarity test device and method |
| CN110286295B (en) * | 2019-05-13 | 2021-07-06 | 国家电网有限公司 | Direct current feed screen branch CT polarity testing device and method |
| CN111536864A (en) * | 2020-05-07 | 2020-08-14 | 郑州上电电机科技发展有限公司 | Central polarity correction circuit and portable correction instrument |
| CN112526412A (en) * | 2020-11-17 | 2021-03-19 | 国网湖南省电力有限公司 | Method and system for testing polarity of current transformer of transformer lifting seat |
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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: 20140409 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |