CN201804072U - Polarity test instrument for current transformer - Google Patents

Polarity test instrument for current transformer Download PDF

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Publication number
CN201804072U
CN201804072U CN2010205569571U CN201020556957U CN201804072U CN 201804072 U CN201804072 U CN 201804072U CN 2010205569571 U CN2010205569571 U CN 2010205569571U CN 201020556957 U CN201020556957 U CN 201020556957U CN 201804072 U CN201804072 U CN 201804072U
Authority
CN
China
Prior art keywords
tester
current transformer
current
module
test instrument
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
CN2010205569571U
Other languages
Chinese (zh)
Inventor
王磊
张卫国
邓帅
田克强
殷守斌
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.)
Heze Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
Heze Power Supply Co of State Grid Shandong Electric Power Co Ltd
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 Heze Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical Heze Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority to CN2010205569571U priority Critical patent/CN201804072U/en
Application granted granted Critical
Publication of CN201804072U publication Critical patent/CN201804072U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a polarity detection device of the electric system, especially discloses a polarity test instrument for the current transformer. The polarity test instrument of the current transformer comprises a main body of the test instrument and the upper cover of the test instrument which are mutually connected. The instrument is characterized in that a primary circuit control module of the apparatus, a electricity quantity display module for the battery, a CT secondary current display module, and an external lead wire module all connected with an accumulator are mounted inside the body of the test instrument. The polarity test instrument for the current transformer is simple for operation, convenient and rapid, capable of completing the operation by a single person, highly safe. Moreover, the electric power module is embedded inside the apparatus, and the voltage is adjustable. A positive range and a negative range are set for the current meter, and the pointer can deflect to two directions. Bi-directional display can be performed, and the requirements of different primary circuit for the apparatus can be satisfied.

Description

The current transformer polarity tester
(1) technical field
The utility model relates to a kind of electric system polarity pick-up unit, particularly a kind of current transformer polarity tester.
(2) background technology
Now a lot of Utilities Electric Co.s use GIS or combined electrical apparatus, test to these device current mutual inductor polarities at present still exists deficiency, mainly be in test process, to need frequent commutation operation, and on GIS and combined electrical apparatus, carry out commutation work and also have certain danger, and inefficiency.
(3) summary of the invention
The utility model provides a kind of simple and quick, safe current transformer polarity tester in order to remedy the defective of prior art.
The utility model is achieved by the following technical solution:
A kind of current transformer polarity tester, comprise the tester main body and the tester loam cake that are connected, it is characterized in that: the primary equipment circuit controls module, battery electric quantity display module, CT secondary current display module and the outside lead module that are connected with accumulator are installed in the tester main body.
This current transformer polarity tester, primary equipment circuit controls module comprises current output terminal that is located at the tester body surfaces and selects rotary switch mutually, the sub-number of current output terminal is four, selects the phase rotary switch just can select the test phase that needs by adjusting; The battery electric quantity display module comprises voltage table and the voltage-regulation knob that is located at the tester body surfaces, and voltage table can show battery electric quantity, and when voltage was lower than certain value, prompting charged the battery.This instrument voltage-regulation knob can regulation voltage, selects corresponding voltage as required; CT secondary current display module comprises that the reometer and the choosing that are located at the tester body surfaces show rotary switch mutually, and when the primary circuit was connected, the CT secondary circuit had electric current to flow through, and ammeter pointer deflects, and can judge CT polarity; The outside lead module comprises three groups of CT secondary current input terminals that are located at the tester body surfaces.The tester main body is provided with charge port, power switch, pilot lamp and testing button, can charge to accumulator by the charge port adapter of connecting with the mains.
The beneficial effects of the utility model are: this current transformer polarity tester, simple, convenient quick, can singlely finish the work, safe, and power module is embedded into device interior, voltage is adjustable, reometer is provided with positive and negative two ranges, pointer can two-wayly show towards both direction deflection, can satisfy the requirement in different primary equipments loop.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is the structural representation of the utility model current transformer polarity tester.
Accompanying drawing 2 is a control principle synoptic diagram of the present utility model.
Accompanying drawing 3 is a measuring principle synoptic diagram of the present utility model.
Among the figure, 1 tester main body, 2 tester loam cakes, 3 voltage tables, 4 current output terminal, 5 select the phase rotary switch, 6 charge port, 7 power switches, 8 pilot lamp, 9 testing buttons, 10 voltage-regulation knobs, 11 choosings show rotary switch, 12 reometers, 13CT secondary current input terminal mutually.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This current transformer polarity tester, comprise the tester main body 1 and the tester loam cake 2 that are connected, it is characterized in that: the primary equipment circuit controls module, battery electric quantity display module, CT secondary current display module and the outside lead module that are connected with accumulator are installed in the tester main body 1.Primary equipment circuit controls module comprises current output terminal 4 that is located at tester main body 1 surface and selects rotary switch 5 mutually that sub 4 numbers of current output terminal are four; The battery electric quantity display module comprises voltage table 3 and the voltage-regulation knob 10 that is located at tester main body 1 surface; CT secondary current display module comprises that the reometer 12 and the choosing that are located at tester main body 1 surface show rotary switch 11 mutually; The outside lead module comprises three groups of CT secondary current input terminals 13 that are located at tester main body 1 surface.Tester main body 1 is provided with charge port 6, power switch 7, pilot lamp 8 and testing button 9.
This current transformer polarity tester connects lead terminal to specifications during use, when the primary circuit was connected, red led 8 was bright.Reometer 12 can show the CT secondary current simultaneously, just can judge that by the yawing moment of reometer 12 pointers CT polarity is additive polarity or subtractive polarity.Its control loop measuring principle is: in Fig. 2, during measurement, with a ground connection disconnecting link closure, tester is connected in the circuit on request.Selecting the phase button to get to needs test to go up mutually, electric current is flowed out by dc power anode, flow through current transformer CTa, CTb, CTc primary side, constitute the loop through ground connection disconnecting link lower end lead-in wire then, measure induction current with the polarity reometer in the Current Transformer Secondary side, just can measure the polarity of CT according to the needle deflection direction of reometer.Its DC-method measuring principle is: in Fig. 3, its positive pole is connected to the primary winding L1 of mutual inductor with battery, L2 connects negative pole, and the secondary side K1 of mutual inductor connects dc milliammeter or microampere meter positive pole, and negative pole meets K2, after carefully connecting the wire, with the K milliammeter pointer positively biased of closing, draw back back milliammeter pointer negative bias, illustrate that the termination that mutual inductor connects the termination on the anode and is connected on the milliammeter anode is the same sex, be that L1, K1 are that same polarity is that mutual inductor is a subtractive polarity, as refer to swing with above-mentioned opposite be additive polarity.

Claims (6)

1. current transformer polarity tester, comprise the tester main body (1) and the tester loam cake (2) that are connected, it is characterized in that: the primary equipment circuit controls module, battery electric quantity display module, CT secondary current display module and the outside lead module that are connected with accumulator are installed in the tester main body (1).
2. current transformer polarity tester according to claim 1, it is characterized in that: primary equipment circuit controls module comprises current output terminal (4) that is located at tester main body (1) surface and selects rotary switch (5) mutually that current output terminal (4) number is four.
3. current transformer polarity tester according to claim 1 is characterized in that: the battery electric quantity display module comprises voltage table (3) and the voltage-regulation knob (10) that is located at tester main body (1) surface.
4. current transformer polarity tester according to claim 1 is characterized in that: CT secondary current display module comprises that the reometer (12) and the choosing that are located at tester main body (1) surface show rotary switch (11) mutually.
5. current transformer polarity tester according to claim 1 is characterized in that: the outside lead module comprises the three groups of CT secondary current input terminals (13) that are located at tester main body (1) surface.
6. current transformer polarity tester according to claim 1 is characterized in that: tester main body (1) is provided with charge port (6), power switch (7), pilot lamp (8) and testing button (9).
CN2010205569571U 2010-10-12 2010-10-12 Polarity test instrument for current transformer Expired - Fee Related CN201804072U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205569571U CN201804072U (en) 2010-10-12 2010-10-12 Polarity test instrument for current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205569571U CN201804072U (en) 2010-10-12 2010-10-12 Polarity test instrument for current transformer

Publications (1)

Publication Number Publication Date
CN201804072U true CN201804072U (en) 2011-04-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010205569571U Expired - Fee Related CN201804072U (en) 2010-10-12 2010-10-12 Polarity test instrument for current transformer

Country Status (1)

Country Link
CN (1) CN201804072U (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102445623A (en) * 2011-12-12 2012-05-09 河南省电力公司洛阳供电公司 Portable current transformer polarity tester
CN104133154A (en) * 2013-05-03 2014-11-05 武汉凯默电气有限公司 Intelligent substation current transformer polarity test method and device
CN104502792A (en) * 2014-12-11 2015-04-08 国家电网公司 Polarity tester for current transformer
CN104749480A (en) * 2015-03-08 2015-07-01 国家电网公司 Whole-set secondary circuit polarity testing device used for relay protection
CN105527538A (en) * 2014-09-30 2016-04-27 国家电网公司 Polarity test device 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
CN106680645A (en) * 2015-11-10 2017-05-17 国网辽宁省电力有限公司本溪供电公司 Current transformer polarity test device
CN107677915A (en) * 2017-08-11 2018-02-09 国网山东省电力公司沂源县供电公司 Use mutual inductor polarity measurement apparatus and its measuring method in Portable metering scene
CN110764042A (en) * 2019-12-03 2020-02-07 天津送变电工程有限公司 Polarity tester for secondary circuit of remote multifunctional mutual inductor
CN112698239A (en) * 2020-11-10 2021-04-23 国网山东省电力公司淄博供电公司 Portable mutual inductor polarity tester

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102445623A (en) * 2011-12-12 2012-05-09 河南省电力公司洛阳供电公司 Portable current transformer polarity tester
CN104133154A (en) * 2013-05-03 2014-11-05 武汉凯默电气有限公司 Intelligent substation current transformer polarity test method and device
CN104133154B (en) * 2013-05-03 2016-12-28 武汉凯默电气有限公司 A kind of intelligent substation current transformer polarity testing method and device
CN105527538A (en) * 2014-09-30 2016-04-27 国家电网公司 Polarity test device of current transformer
CN104502792A (en) * 2014-12-11 2015-04-08 国家电网公司 Polarity tester for current transformer
CN104749480A (en) * 2015-03-08 2015-07-01 国家电网公司 Whole-set secondary circuit polarity testing device used for relay protection
CN104749480B (en) * 2015-03-08 2017-06-30 国网山东省电力公司枣庄供电公司 One kind is used for relay protection secondary circuit whole group polarity test device
CN106680645A (en) * 2015-11-10 2017-05-17 国网辽宁省电力有限公司本溪供电公司 Current transformer polarity test device
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
CN107677915A (en) * 2017-08-11 2018-02-09 国网山东省电力公司沂源县供电公司 Use mutual inductor polarity measurement apparatus and its measuring method in Portable metering scene
CN110764042A (en) * 2019-12-03 2020-02-07 天津送变电工程有限公司 Polarity tester for secondary circuit of remote multifunctional mutual inductor
CN112698239A (en) * 2020-11-10 2021-04-23 国网山东省电力公司淄博供电公司 Portable mutual inductor polarity tester

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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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110420

Termination date: 20161012