CN202421409U - Portable polarity tester for mutual inductors - Google Patents
Portable polarity tester for mutual inductors Download PDFInfo
- Publication number
- CN202421409U CN202421409U CN2011205373857U CN201120537385U CN202421409U CN 202421409 U CN202421409 U CN 202421409U CN 2011205373857 U CN2011205373857 U CN 2011205373857U CN 201120537385 U CN201120537385 U CN 201120537385U CN 202421409 U CN202421409 U CN 202421409U
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- CN
- China
- Prior art keywords
- mutual inductor
- casing
- inductor primary
- polarity tester
- primary side
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a portable polarity tester for mutual inductors. The portable polarity tester comprises a box, a battery is mounted in the box, a multimeter, a mutual inductor primary-side positive connecting terminal and a mutual inductor primary-side negative connecting terminal are mounted on the upper surface of the box, the mutual inductor primary-side positive connecting terminal is connected with a positive pole and a negative pole of the battery by leads, four testing lines which are used for connecting the mutual inductor primary-side positive connecting terminal and the mutual inductor primary-side negative connecting terminal with a mutual inductor primary side and connecting a red binding post of the multimeter and a black binding post of the multimeter with a mutual inductor secondary side are placed in the box, and two drawing type reference test bars are further placed in the box. The portable polarity tester is simple in structure, testing operation can be completed by a person only, work efficiency is greatly improved, and the portable polarity tester is high in testing accuracy and is safe and reliable.
Description
Technical field
The utility model relates to the measuring equipment of electric system, especially relates to a kind of portable mutual inductor polarity tester.
Background technology
Current transformer is used in the high-low pressure electrical network very extensively; It is indispensable electrical equipment in the electric system; All should carry out polarity test before putting into operation and before and after the overhaul, in case when wiring that polarity is mistaken, cause the protective relaying device malfunction with can not be correct measure.The method of traditional measurement polarity is to be employed in a winding connection of electric current (or voltage) mutual inductor accumulator to be used for power supply, uses the pointer multimeter to measure in electric current (or voltage) mutual inductor Secondary Winding.This measuring method is more directly perceived; Measurement result is accurate; But the operation more complicated generally needs 2 staff to carry out, and a people connects accumulator at primary side; A people connects multimeter at secondary side, and the operator of secondary side need command break-make that the operator of primary side carries out accumulator wiring at interval to produce current impulse.Therefore, existing polarity measurement needs two operators to have good fitness just can accurately accomplish measurement, both wastes of manpower, time, increased work difficulty again, and reduced work efficiency, bring very burden for work about electric power person.
Summary of the invention
For addressing the above problem, the purpose of the utility model provides a kind of portable mutual inductor polarity tester simple in structure, easy to operate, portable.
For realizing the foregoing invention purpose, the utility model adopts following technical scheme:
Described portable mutual inductor polarity tester; It comprises casing; Battery is installed in the casing; The casing upper surface is equipped with the negative connection terminal of universal meter, the positive connection terminal of mutual inductor primary side and mutual inductor primary side, and the positive and negative connection terminal of mutual inductor primary side is connected with the both positive and negative polarity of battery through lead; Be placed with in the casing be used for positive and negative connection terminal of mutual inductor primary side and mutual inductor primary side be connected and universal meter is red, four p-wires that are connected of black binding post and mutual inductor secondary side, also be placed with the reference test bar of two drawing and pulling types in the casing.
Described portable mutual inductor polarity tester, its battery are to be composed in series by 6 joint 1.5V dry cells.
Described portable mutual inductor polarity tester, the top of its casing is provided with handle.
Owing to adopt aforesaid technical scheme, the utlity model has following superiority:
This mutual inductor polarity tester, it is simple in structure, and is with low cost; Easy to use, only need a people can accomplish test job, save human and material resources and time; Improved the work efficiency of polarity test greatly, and test accuracy is high, speed is fast; Safe and reliable, can guarantee the safe and stable operation of electric system.
Description of drawings
Fig. 1 is the package assembly synoptic diagram of the utility model;
Among the figure: the positive connection terminal of 1-mutual inductor primary side; 2-mutual inductor primary side is born connection terminal; The 3-casing; The 4-universal meter; The 5-handle; The 6-reference test bar; 7-universal meter black binding post; The red binding post of 8-universal meter.
Embodiment
Through accompanying drawing and embodiment the utility model is done further explain below.
As shown in Figure 1; Described portable mutual inductor polarity tester; It comprises casing 3; In the casing 3 battery is installed, casing 3 upper surfaces are equipped with the negative connection terminal 2 of universal meter 4, the positive connection terminal 1 of mutual inductor primary side and mutual inductor primary side, and the positive and negative connection terminal of mutual inductor primary side is connected with the both positive and negative polarity of battery through lead; Be placed with in the casing 3 be used for positive and negative connection terminal of mutual inductor primary side and mutual inductor primary side be connected and universal meter is red, four p-wires that are connected of black binding post and mutual inductor secondary side, also be placed with the reference test bar 6 of two drawing and pulling types in the casing 3.Described battery is to be composed in series by 6 joint 1.5V dry cells.The top of said casing is provided with handle 5, is convenient for carrying.
The utility model is mainly used in the polarity test of current transformer, during test, with two p-wires the red binding post 8 of universal meter, universal meter black binding post 7 is coupled together with the Current Transformer Secondary side; An end that the positive and negative connection terminal of mutual inductor primary side of casing upper surface is connected other two p-wires respectively; The other end of other two p-wires connects an end of two reference test bars respectively, and the other end of two reference test bars is connected with the mutual inductor primary side, connects moment; If universal meter pointer positively biased; Break off moment, the universal meter pointer is anti-inclined to one side, and then the first side winding of current transformer and electric current secondary side winding are same polarity.
Claims (3)
1. portable mutual inductor polarity tester; It comprises casing (3); It is characterized in that: casing is equipped with battery in (3); Casing (3) upper surface is equipped with the negative connection terminal (2) of universal meter (4), the positive connection terminal of mutual inductor primary side (1) and mutual inductor primary side, and the positive and negative connection terminal of mutual inductor primary side is connected with the both positive and negative polarity of battery through lead; Be placed with in the casing (3) be used for positive and negative connection terminal of mutual inductor primary side and mutual inductor primary side be connected and universal meter is red, four p-wires that are connected of black binding post and mutual inductor secondary side, also be placed with the reference test bar (6) of two drawing and pulling types in the casing (3).
2. portable mutual inductor polarity tester according to claim 1 is characterized in that: its battery is to be composed in series by 6 joint 1.5V dry cells.
3. portable mutual inductor polarity tester according to claim 1 is characterized in that: the top of its casing (3) is provided with handle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373857U CN202421409U (en) | 2011-12-21 | 2011-12-21 | Portable polarity tester for mutual inductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373857U CN202421409U (en) | 2011-12-21 | 2011-12-21 | Portable polarity tester for mutual inductors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421409U true CN202421409U (en) | 2012-09-05 |
Family
ID=46746161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205373857U Expired - Fee Related CN202421409U (en) | 2011-12-21 | 2011-12-21 | Portable polarity tester for mutual inductors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421409U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954882A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Current transformer polarity judgment instrument with lithium battery |
| CN104198879A (en) * | 2014-09-05 | 2014-12-10 | 国家电网公司 | Polarity tester |
| CN104502792A (en) * | 2014-12-11 | 2015-04-08 | 国家电网公司 | Polarity tester for current transformer |
| CN107015044A (en) * | 2016-08-24 | 2017-08-04 | 何排枝 | Transformer in the middle of a kind of high-precision high voltage isolation |
| CN107817419A (en) * | 2017-06-23 | 2018-03-20 | 国网新疆电力公司经济技术研究院 | Portable three-phase polarity tester |
-
2011
- 2011-12-21 CN CN2011205373857U patent/CN202421409U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954882A (en) * | 2014-05-12 | 2014-07-30 | 国家电网公司 | Current transformer polarity judgment instrument with lithium battery |
| CN104198879A (en) * | 2014-09-05 | 2014-12-10 | 国家电网公司 | Polarity tester |
| CN104502792A (en) * | 2014-12-11 | 2015-04-08 | 国家电网公司 | Polarity tester for current transformer |
| CN107015044A (en) * | 2016-08-24 | 2017-08-04 | 何排枝 | Transformer in the middle of a kind of high-precision high voltage isolation |
| CN107817419A (en) * | 2017-06-23 | 2018-03-20 | 国网新疆电力公司经济技术研究院 | Portable three-phase polarity tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120905 Termination date: 20121221 |