CN206671468U - Pocket instrument for testing polarity of current transformer - Google Patents
Pocket instrument for testing polarity of current transformer Download PDFInfo
- Publication number
- CN206671468U CN206671468U CN201720343401.6U CN201720343401U CN206671468U CN 206671468 U CN206671468 U CN 206671468U CN 201720343401 U CN201720343401 U CN 201720343401U CN 206671468 U CN206671468 U CN 206671468U
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- polarity
- power supply
- indicator lamp
- terminal
- current transformer
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 208000032368 Device malfunction Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of pocket instrument for testing polarity of current transformer, solve the problems, such as that existing Traditional DC method easily produces error, it is characterised in that including AC Power supply socket, power supply indicator, air switch, battery, test button, binding post, polarity indicator lamp；AC Power supply socket connects battery by air switch, and power supply indicator is connected between AC Power supply socket, air switch, and the positive pole of battery is connected by test button once terminates terminal I, and negative pole is directly connected to once terminate terminal II；Red polarity indicator lamp, green polarity indicator lamp are in parallel, its positive pole connecting secondary termination terminal I, negative pole connecting secondary termination terminal II, in addition to pointer gauge in parallel.The utility model is simple and reliable, be easy to carry about with one, cost it is cheap, by gauge pointer instruction and the correctness of the dual guarantee polarity of polarity indicator lamp, substantially increase on-the-spot test efficiency, reduce experimental labor's cost, enhancing maintainer investigates the professional standards of failure.
Description
Technical field
A kind of malfunction test service kit of current transformer is the utility model is related to, is tested more particularly to one kind
The device of current transformer polarity.
Background technology
The electrical equipment important as power system, current transformer carry the isolation and height between high and low pressure system
The function that pressure amount is changed to low pressure amount, play being galvanically isolated for first and second loop in relay protection secondary circuit, its is any
The leading-out terminal wiring error of side is likely to cause protective relaying device malfunction, and influences the operation prison of power system
Control and accident treatment.Therefore, the correct polarity for judging current transformer is always a highly important job.It is mutual in new installation
When sensor puts into operation or changed transformer secondary cable, the correctness of current transformer connection is examined, is relay protection staff
Essential working procedure.
Mutual inductor polarity method of testing mainly has direct current method and alternating current method at present, and conventional method is direct current method, i.e., with one
Block dry cell and an eedle galvanometer test the polarity of current transformer.This method is usually required between Field Force
Cooperation complete, also, if when the impedance of certain model transformer is larger, it is difficult to sentenced by observing the swing of pointer
Disconnected polarity, easily produces error and efficiency is low.
The content of the invention
The defects of the purpose of this utility model is to overcome prior art provides a kind of pocket current transformer polarity and surveyed
Instrument is tried, is easy to carry about with one and cost is cheap, substantially increase on-the-spot test efficiency.
Technical problem to be solved in the utility model is realized using following technical scheme：
Pocket instrument for testing polarity of current transformer, it is characterised in that：Including AC Power supply socket, power supply indicator, sky
Air cock, battery, test button, binding post, red polarity indicator lamp, green polarity indicator lamp；Described AC power is inserted
Seat connects battery by air switch, and power supply indicator is connected between described AC Power supply socket, air switch, described
The positive pole of battery is connected by test button and once terminates terminal I, and negative pole is directly connected to once terminate terminal II；Described is red
Color polarity indicator lamp, green polarity indicator lamp are in parallel, its positive pole connecting secondary termination terminal I, negative pole connecting secondary termination terminal
Ⅱ。
Further, in addition to pointer gauge, described pointer gauge with red polarity indicator lamp, green polarity indicator lamp simultaneously
Connection, its positive pole connecting secondary termination terminal I, negative pole connecting secondary termination terminal II.
The utility model is simple and reliable, is easy to carry about with one and cost is cheap, passes through gauge pointer instruction and polarity indicator lamp
The correctness of dual guarantee polarity, substantially increases on-the-spot test efficiency, reduces experimental labor's cost, enhancing maintainer row
The professional standards of failure are looked into, solves the problems, such as that Traditional DC method easily produces error, improves the accuracy of test, ensure that
The safety production efficiency of power network.
Brief description of the drawings
Fig. 1 is device panel figure of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model use state.
Wherein：1- AC Power supply sockets, 2- power supply indicators, 3- air switches, 4- test buttons, 5- once terminate terminal
I, 5 '-once terminate terminal II, 6- secondary terminals binding post I, 6 '-secondary terminals binding post II, 7- pointer gauges, the instruction of 8- red polarity
Lamp, 9- green polarity indicator lamps, 10- batteries, 11- current transformers, 12- panels.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
As shown in figure 1, be provided with panel 12 AC Power supply socket 1, power supply indicator 2, air switch 3, experiment by
Button 4, once terminate terminal I 5, once terminate terminal II 5 ', secondary terminals binding post I 6, secondary terminals binding post II 6 ', pointer gauge 7,
Red polarity indicator lamp 8, green polarity indicator lamp 9, internally provided with battery 10.
The described incoming transport power supply of AC Power supply socket 1, the battery 10 of connection is filled by air switch 3
Electricity.Power supply indicator 2 is connected between described AC Power supply socket 1, air switch 3.The positive pole of described battery 10 passes through
Test button 4 connects once termination terminal I 5, negative pole and is directly connected to once terminate terminal II 5 ', described red polarity indicator lamp
8th, green polarity indicator lamp 9 is in parallel, its positive pole connecting secondary termination terminal I 6, negative pole connecting secondary termination terminal II 6 '.
Further, in addition to pointer gauge 7, described pointer gauge 7 and red polarity indicator lamp 8, green polarity indicator lamp 9
Parallel connection, positive pole connecting secondary termination terminal I 6, negative pole connecting secondary termination terminal II 6 '.
As shown in Fig. 2 the once termination terminal I on the leading-out terminal P1 access panels 12 of the primary side of current transformer 11
5th, the once termination terminal II 5 ' on the leading-out terminal P2 access panels 12 of primary side, drawing for the secondary side of current transformer 11
The secondary termination gone out on the leading-out terminal S2 access panels 12 of the secondary terminals binding post I 6 on terminal S1 access panels 12, secondary side
Terminal II 6 '.
The utility model is mainly realized by steps such as power configuration, function control, polarity instructions, is to current transformer
The once improvement of traditional test mode.Connecting experiment line by the first and second loop sign of current transformer 11 during test can be real
Test.The clockwise of pointer gauge 7, positive polarity is represented, counterclockwise skew, represent negative polarity；Red polarity indicator lamp 8 is bright, represents
Negative polarity, the green bright expression positive polarity of polarity indicator lamp 9.So, gauge pointer instruction and the dual guarantee of polarity indicator lamp are passed through
The correctness of polarity.The utility model can not need incoming transport power supply yet, as long as being filled in advance to battery by air switch
Good electricity can by test button 4 it is " one-touch " operation and control, realize battery 10 and the primary side of current transformer 11
The break-make of electric current.
As a result detect：Test button 4 is pressed, when pointer gauge 7 deflects clockwise and green polarity indicator lamp 9 is bright, explanation
The polarity of the leading-out terminal of the primary side of current transformer 11 and the leading-out terminal of secondary side mark is correct, is same polarity；Press
Test button 4, when pointer gauge 7 deflects counterclockwise and red polarity indicator lamp 8 is bright, illustrate the primary side of current transformer 11
The polarity of the leading-out terminal of leading-out terminal and secondary side is marked on the contrary, being reversed polarity.
Operation principle：
Primary side leading-out terminal P1, P2 ends of current transformer 11, are connected with the positive pole of battery 10, negative pole, work as experiment respectively
When button 4 is pressed, P1, P2 end of current transformer 11 have electric current to flow through, now Leading-out Terminal in Secondary Side of current transformer 11
S1, S2 have induced-current to flow through, and induced-current lights the pointer gauge throw of pointer in parallel accessed and polarity indicator lamp, so as to
Determine the polarity of current transformer 11.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, above-described embodiment, described in specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model can also
There are various changes and modifications, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model will
Protection domain is sought by appended claims and its equivalent thereof.
Claims (2)
- A kind of 1. pocket instrument for testing polarity of current transformer, it is characterised in that：Including AC Power supply socket (1), power supply instruction Lamp (2), air switch (3), battery (10), test button (4), binding post, red polarity indicator lamp (8), green polarity refer to Show lamp (9)；Described AC Power supply socket (1) connects battery (10), described AC Power supply socket by air switch (3) (1) power supply indicator (2), is connected between air switch (3), the positive pole of described battery (10) is connected by test button (4) Connect and once terminate terminal I (5), negative pole is directly connected to once terminate terminal II (5 ')；It is described red polarity indicator lamp (8), green Color polarity indicator lamp parallel connection (9), its positive pole connecting secondary termination terminal I (6), negative pole connecting secondary termination terminal II (6 ').
- 2. pocket instrument for testing polarity of current transformer as claimed in claim 1, it is characterised in that：Also include pointer gauge (7), Described pointer gauge (7) is in parallel with red polarity indicator lamp (8), green polarity indicator lamp (9), its positive pole connecting secondary terminated line Post I (6), negative pole connecting secondary termination terminal II (6 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720343401.6U CN206671468U (en) | 2017-04-03 | 2017-04-03 | Pocket instrument for testing polarity of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720343401.6U CN206671468U (en) | 2017-04-03 | 2017-04-03 | Pocket instrument for testing polarity of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671468U true CN206671468U (en) | 2017-11-24 |
Family
ID=60367652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720343401.6U Active CN206671468U (en) | 2017-04-03 | 2017-04-03 | Pocket instrument for testing polarity of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206671468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666502A (en) * | 2020-12-03 | 2021-04-16 | 广东电网有限责任公司中山供电局 | Hand-held type CT polarity tester device |
-
2017
- 2017-04-03 CN CN201720343401.6U patent/CN206671468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666502A (en) * | 2020-12-03 | 2021-04-16 | 广东电网有限责任公司中山供电局 | Hand-held type CT polarity tester device |
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