CN201804071U - Polarity tester for current transformer - Google Patents

Polarity tester for current transformer Download PDF

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Publication number
CN201804071U
CN201804071U CN2010202978618U CN201020297861U CN201804071U CN 201804071 U CN201804071 U CN 201804071U CN 2010202978618 U CN2010202978618 U CN 2010202978618U CN 201020297861 U CN201020297861 U CN 201020297861U CN 201804071 U CN201804071 U CN 201804071U
Authority
CN
China
Prior art keywords
current transformer
positive
connection terminal
negative
test
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
Application number
CN2010202978618U
Other languages
Chinese (zh)
Inventor
陈云河
李永焕
芦振波
张继锋
穆会群
谢新歌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SONG COUNTY ELECTRIC POWER BUREAU
Original Assignee
SONG COUNTY ELECTRIC POWER BUREAU
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 SONG COUNTY ELECTRIC POWER BUREAU filed Critical SONG COUNTY ELECTRIC POWER BUREAU
Priority to CN2010202978618U priority Critical patent/CN201804071U/en
Application granted granted Critical
Publication of CN201804071U publication Critical patent/CN201804071U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a polarity tester for a current transformer, which comprises a shell and two test rods, wherein a battery is installed in the shell; an ammeter, a test switch, current transformer primary side positive and negative connecting terminals and current transformer secondary side positive and negative connecting terminals are installed on the upper surface of the shell; the test switch is connected between the battery positive pole and the current transformer primary side positive connecting terminal; the current transformer primary side negative connecting terminal is connected with the battery negative pole; the ammeter is connected between the current transformer secondary side positive and negative connecting terminals; the current transformer secondary side positive and negative connecting terminals are connected with the current transformer secondary side through leads; the current transformer primary side positive and negative connecting terminals are respectively connected with one end of each of the two test rods through a lead; and the other end of each of the two test rods is respectively connected with the current transformer primary side. The utility model has simple structure, high testing accuracy, safety and reliability, only needs one person to finish the testing work, and greatly improves the working efficiency.

Description

A kind of current transformer polarity tester
Technical field
The utility model relates to the measuring equipment of electric system, especially relates to a kind of current transformer polarity tester.
Background technology
Current transformer is used very extensive in the high-low pressure electrical network; 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 and can not be correct measure.The method of traditional measurement polarity is to adopt DC-method, connects used for dry cell in power supply at winding of current transformer, uses multimeter to measure in secondary winding in current transformer.This measuring method is more directly perceived, measurement result is accurate, but operation more complicated, generally need two staff to carry out, a people connects dry cell at primary side, a people connects multimeter at secondary side, and the operator of secondary side need command the operator of primary side to carry out the break-make of dry cell wiring at interval to produce current impulse.Therefore, existing polarity measurement needs two operators to have good fitness just can accurately finish 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 this utility model provides a kind of simple in structure, easy to operate current transformer polarity tester.
For achieving the above object, the utility model adopts following technical scheme:
Described current transformer polarity tester, it comprises housing, reometer, test switch, the positive and negative connection terminal of current transformer primary side, the positive and negative connection terminal of Current Transformer Secondary side, battery and reference test bar, battery is installed in the housing, the housing upper surface is equipped with reometer, test switch, the positive and negative connection terminal of the positive and negative connection terminal summation current transformer of current transformer primary side secondary side, test switch is connected between the positive connection terminal of anode summation current transformer primary side, the negative connection terminal of current transformer primary side is connected with battery cathode, and reometer is connected between the positive and negative connection terminal of Current Transformer Secondary side; The positive and negative connection terminal of Current Transformer Secondary side is connected with the Current Transformer Secondary side by lead, the positive and negative connection terminal of current transformer primary side links to each other with two reference test bar one ends respectively by lead, and two reference test bar other ends link to each other with the current transformer primary side respectively.
Described current transformer polarity tester, its reference test bar is made up of at least two sections bodies of rod of socket successively.
Owing to adopt aforesaid technical scheme, the utlity model has following superiority:
This current transformer polarity tester, it is simple in structure, with low cost, easy to use, only need a people can finish test job, save human and material resources and time, improved the work efficiency of polarity test greatly, and the test accuracy height, speed is fast, safe and reliable, can guarantee the safe and stable operation of electric system.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Among the figure: the positive connection terminal of 1-current transformer primary side; 2-current transformer primary side is born connection terminal; The 3-housing; The 4-test switch; The 5-reometer; The 6-reference test bar; 7-Current Transformer Secondary side is born connection terminal; The positive connection terminal of 8-Current Transformer Secondary side.
Embodiment
Below by drawings and Examples the utility model is described in further detail.
As Fig. 1, shown in 2, this current transformer polarity tester, it comprises housing 3, reometer 5, test switch 4, the positive and negative connection terminal of current transformer primary side, the positive and negative connection terminal of Current Transformer Secondary side, battery and reference test bar 6, battery is installed in the housing, battery adopts 12V 5VA lead-acid accumulator, the housing upper surface is equipped with reometer 5, test switch 4, the positive and negative connection terminal of the positive and negative connection terminal summation current transformer of current transformer primary side secondary side, test switch 4 is connected between the positive connection terminal 1 of anode summation current transformer primary side, the negative connection terminal 2 of current transformer primary side is connected with battery cathode, and reometer 5 is connected the positive and negative connection terminal 8 of Current Transformer Secondary side, between 7; The positive and negative connection terminal of Current Transformer Secondary side is connected with the Current Transformer Secondary side by lead, the positive and negative connection terminal 1,2 of current transformer primary side links to each other with two reference test bar 6 one ends respectively by lead, and the little hook difference clasp joint of two reference test bar other ends is on current transformer primary side terminals.
Described reference test bar is made up of at least two sections bodies of rod of socket successively, and the reference test bar shortest length is 1.2m, and extreme length is 6.0m, can adjust the length of reference test bar during test according to field condition.
During test, press test switch 4, if reometer 5 pointer forward rotation illustrate that current transformer first side winding and secondary side winding are same polarities, promptly the L1 of current transformer primary side end is same polarity with the K1 end of Current Transformer Secondary side; If the ammeter pointer backward rotation illustrates that current transformer first side winding and secondary side winding are reversed polarity, promptly the L1 end is reversed polarity with the K1 end.

Claims (2)

1. current transformer polarity tester, it comprises housing, reometer, test switch, the positive and negative connection terminal of current transformer primary side, positive and negative connection terminal of Current Transformer Secondary side and battery, battery is installed in the housing, the housing upper surface is equipped with reometer, test switch, the positive and negative connection terminal of the positive and negative connection terminal summation current transformer of current transformer primary side secondary side, test switch is connected between the positive connection terminal of anode summation current transformer primary side, the negative connection terminal of current transformer primary side is connected with battery cathode, and reometer is connected between the positive and negative connection terminal of Current Transformer Secondary side; The positive and negative connection terminal of Current Transformer Secondary side is connected with the Current Transformer Secondary side by lead; It is characterized in that: it also includes reference test bar, and the positive and negative connection terminal of current transformer primary side links to each other with two reference test bar one ends respectively by lead, and two reference test bar other ends link to each other with the current transformer primary side respectively.
2. current transformer polarity tester according to claim 1 is characterized in that: its reference test bar is made up of at least two sections bodies of rod of socket successively.
CN2010202978618U 2010-08-20 2010-08-20 Polarity tester for current transformer Expired - Fee Related CN201804071U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202978618U CN201804071U (en) 2010-08-20 2010-08-20 Polarity tester for current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202978618U CN201804071U (en) 2010-08-20 2010-08-20 Polarity tester for current transformer

Publications (1)

Publication Number Publication Date
CN201804071U true CN201804071U (en) 2011-04-20

Family

ID=43873574

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202978618U Expired - Fee Related CN201804071U (en) 2010-08-20 2010-08-20 Polarity tester for current transformer

Country Status (1)

Country Link
CN (1) CN201804071U (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102967795A (en) * 2012-12-11 2013-03-13 衡水供电公司 Polarity detecting device of current mutual inductor
CN103592472A (en) * 2012-08-15 2014-02-19 国网辽宁省电力有限公司大连供电公司 A connecting line dedicated to current transformer tests
CN103954882A (en) * 2014-05-12 2014-07-30 国家电网公司 Current transformer polarity judgment instrument with lithium battery
CN104166071A (en) * 2014-08-07 2014-11-26 国家电网公司 Portable electric transformer polarity determining device
CN104198879A (en) * 2014-09-05 2014-12-10 国家电网公司 Polarity tester
CN104215927A (en) * 2014-09-02 2014-12-17 国家电网公司 Multifunctional mutual inductor tester
CN104898016A (en) * 2015-06-26 2015-09-09 国家电网公司 Device for checking secondary circuit and polarity of current transformer
CN105929352A (en) * 2016-05-13 2016-09-07 国网山东省电力公司枣庄供电公司 Combined-type current transformer testing device
CN108646133A (en) * 2016-01-18 2018-10-12 辛兴华 A kind of production method of current transformer Check up polarity termination
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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103592472A (en) * 2012-08-15 2014-02-19 国网辽宁省电力有限公司大连供电公司 A connecting line dedicated to current transformer tests
CN102967795A (en) * 2012-12-11 2013-03-13 衡水供电公司 Polarity detecting device of current mutual inductor
CN103954882A (en) * 2014-05-12 2014-07-30 国家电网公司 Current transformer polarity judgment instrument with lithium battery
CN104166071A (en) * 2014-08-07 2014-11-26 国家电网公司 Portable electric transformer polarity determining device
CN104215927A (en) * 2014-09-02 2014-12-17 国家电网公司 Multifunctional mutual inductor tester
CN104198879A (en) * 2014-09-05 2014-12-10 国家电网公司 Polarity tester
CN104898016A (en) * 2015-06-26 2015-09-09 国家电网公司 Device for checking secondary circuit and polarity of current transformer
CN108646133A (en) * 2016-01-18 2018-10-12 辛兴华 A kind of production method of current transformer Check up polarity termination
CN105929352A (en) * 2016-05-13 2016-09-07 国网山东省电力公司枣庄供电公司 Combined-type current transformer testing device
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

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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: 20110420

Termination date: 20110820