CN203894361U - Long-distance mutual inductor polarity tester - Google Patents
Long-distance mutual inductor polarity tester Download PDFInfo
- Publication number
- CN203894361U CN203894361U CN201420357184.2U CN201420357184U CN203894361U CN 203894361 U CN203894361 U CN 203894361U CN 201420357184 U CN201420357184 U CN 201420357184U CN 203894361 U CN203894361 U CN 203894361U
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- China
- Prior art keywords
- binding post
- mutual inductor
- switch
- power supply
- milliammeter
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Abstract
The utility model discloses a long-distance mutual inductor polarity tester, which comprises a power supply, a power switch, a detection switch, a slide rheostat, a plurality of binding posts and a milliammeter, wherein one end of the power supply is connected with one end of the detection switch, and the other end of the detection switch is connected with the first binding post; the other end of the power supply is connected with the second binding post through the power switch; the first binding post and the second binding post are respectively connected with two ends of a primary side of a detected mutual inductor; one end of the milliammeter is connected with the third binding post, the other end of the milliammeter is connected with one end of the slide rheostat, and the other end of the slide rheostat is connected with the fourth binding post; the third binding post and the fourth binding post are respectively connected with two ends of a secondary side of the detected mutual inductor. The long-distance mutual inductor polarity tester has the advantages that the polarity connection of the mutual inductor is fast judged through the deflection of hands of the milliammeter, high in detection accuracy rate is high, and the circuit structure is simple, easy to realize and the like.
Description
Technical field
The utility model relates to a kind of remote mutual inductor polarity somascope; especially for checking mutual inductor first and second side and the direct whether corresponding remote mutual inductor polarity somascope of wiring between connected electrical equipment with it, be widely used in the work on the spot of the specialties such as relay protection and electric energy metrical.
Background technology
Mutual inductor is in electric system, to check that the secondary devices such as instrument, relay protection obtain the sensor of electric primary circuit information; it is the contact element between primary system and electrical secondary system; the low-voltage and the little electric current that the high voltage of primary side, large electric current are become to secondary side standard, make secondary circuit correctly reflect normal operation and the fault state of primary system.
Electric current and voltage be with directive, so electric current may cause serious consequence into and out of line and the high and low line wrong of voltage, as protective relaying device misoperation or be failure to actuate, electric power meter mistake metering etc.So it is particularly important to the wiring correctness of mutual inductor secondary side end (protective relaying device or electric power meter) to determine mutual inductor primary side top.
In some work on the spot, mutual inductor and secondary device (protective relaying device or electric power meter) distance, between the two with the even cable connection of up to a hundred meters of tens of rice.This has brought difficulty to the polarity that checks them, and the employing telechiric device of the invention checks at a distance, has solved this difficult problem, and so no matter mutual inductor and secondary device, apart from distance, can carry out polarity check easily and accurately.
Between existing inspection mutual inductor and secondary device (protective relaying device or electric power meter) mainly there is following problem in instrument or the method for wiring correctness:
1, existing instrument or method are not made two parts instrument; the way that so just can only take closely segmentation to check, cannot complete mutual inductor primary side top to the direct inspection of mutual inductor secondary side end (protective relaying device or electric power meter).
2, existing instrument or method are not installed telechiric device, observation table meter when cannot accomplish remote-controlled operation power supply.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, and provides a kind of remote mutual inductor polarity somascope, fast and effeciently to judge the polarity of mutual inductor.
The utility model be technical solution problem by the following technical solutions.
A remote mutual inductor polarity somascope, its design feature is to comprise power supply, power switch, detector switch, slide rheostat, a plurality of binding post and milliammeter; Described a plurality of binding post comprises the first binding post, the second binding post, the 3rd binding post and the 4th binding post;
One end of described power supply is connected with one end of described detector switch, and the other end of described detector switch is connected with described the first binding post; The other end of described power supply is connected with described the second binding post by described power switch; Described the first binding post and described the second binding post are connected to the two ends of the primary side of detected mutual inductor;
One end of described milliammeter is connected with described the 3rd binding post, and the other end of described milliammeter is connected with one end of described slide rheostat, and the other end of described slide rheostat is connected with described the 4th binding post; Described the 3rd binding post and described the 4th binding post are connected to the two ends of the secondary side of detected mutual inductor.
The design feature of a kind of remote mutual inductor polarity somascope of the present utility model is also:
Described detector switch is teleswitch; Described teleswitch comprises controlled switch and master switch;
One end of described controlled switch is connected with described power supply, and the other end of described controlled switch is connected with described the first binding post; The two ends of described master switch are connected to the two ends of a direct supply, are controlled the opening and closing of described controlled switch by described master switch.
On described power supply, be parallel with a voltage display screen, to show the voltage of described power supply.
Compared with the prior art, the utility model beneficial effect is embodied in:
A kind of remote mutual inductor polarity somascope of the present utility model, is divided into mains side (comprising power supply, power switch, voltage display screen and controlled switch etc.), table meter side (comprising slide rheostat, milliammeter etc.) two parts; The table meter side of somascope is installed a telechiric device (being master switch and the working power thereof of described teleswitch), in order to control the connecting and disconnecting of the circuit of somascope mains side;
According to the instruction checking instrument mains side of telechiric device, at mutual inductor primary side, add electric pulse a, according to this electric pulse of electromagnetic induction principle a, can induce another electric pulse b at mutual inductor secondary side, mutual inductor secondary side is connected with checking instrument meter side, electric pulse b can make the indicator deflection of milliammeter, judges the correctness of a secondary side polarity according to the situation of the indicator deflection of milliammeter.Mutual inductor secondary side is generally connected with secondary device by terminal board, cable, terminal box etc., reaches tens of rice rice even up to a hundred between them.At present, generally adopt the method for segmentation inspection to carry out the polarity check of first and second equipment, length consuming time and accuracy are low.The present invention can skip intermediate link and directly determine mutual inductor primary side top to the wiring correctness of mutual inductor secondary side end (protective relaying device or electric power meter).
A kind of remote mutual inductor polarity somascope of the present utility model, for judging mutual inductor first and second side or the direct polarity correspondence problem between connected electrical equipment with it, have the advantages such as the polarity that can judge fast by the indicator deflection of milliammeter mutual inductor connects, Detection accuracy is high, circuit structure is simple, easy realization.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of a kind of remote mutual inductor polarity somascope of the present utility model.
Fig. 2 is the outside drawing of a kind of remote mutual inductor polarity somascope of the present utility model.
In Fig. 1-Fig. 2, label is: 1 tested mutual inductor, 2 master switches, 3 controlled switchs, 4 voltage display screens, 5 milliammeters, 6 slide rheostats, 7 power supplys, 8 power switches, 9 first binding posts, 10 second binding posts, 11 the 3rd binding posts, 12 the 4th binding posts.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1-2, a kind of remote mutual inductor polarity somascope, it comprises power supply 7, power switch 8, detector switch, slide rheostat 6, a plurality of binding post and milliammeter 5; Described a plurality of binding post comprises the first binding post 9, the second binding post 10, the 3rd binding post 11 and the 4th binding post 12;
One end of described power supply 7 is connected with one end of described detector switch, and the other end of described detector switch is connected with described the first binding post 9; The other end of described power supply 7 is connected with described the second binding post 10 by described power switch 8; Described the first binding post 9 and described the second binding post 10 are connected to the two ends of the primary side of detected mutual inductor 1;
One end of described milliammeter 5 is connected with described the 3rd binding post 11, and the other end of described milliammeter 5 is connected with one end of described slide rheostat 6, and the other end of described slide rheostat 6 is connected with described the 4th binding post 12; Described the 3rd binding post 11 and described the 4th binding post 12 are connected to the two ends of the secondary side of detected mutual inductor 1.
Described detector switch is teleswitch; Described teleswitch comprises controlled switch 3 and master switch 2;
One end of described controlled switch 3 is connected with described power supply 7, and the other end of described controlled switch 3 is connected with described the first binding post 9; The two ends of described master switch 2 are connected to the two ends of a direct supply 13, are controlled the opening and closing of described controlled switch 3 by described master switch 2.The opening and closing of described master switch and described controlled switch keep synchronous regime, and master switch 2 all adopts point driving switch to have elastic force with controlled switch 3, presses connection, unclamps disconnection, and controlled switch 3 keeps synchronous regime with teleswitch 2.During concrete enforcement, described controlled switch is connected on tested mutual inductor, described master switch be arranged on milliammeter near so that observe the indicator of milliammeter turn to while detecting.
On described power supply, be parallel with a voltage display screen 4, to show the voltage of described power supply.
Remote mutual inductor polarity somascope of the present utility model is divided into mains side (comprising power supply, power switch, voltage display screen and controlled switch etc.), table meter side (comprising slide rheostat, milliammeter etc.) two parts.The table meter part of the 3rd binding post 11 and milliammeter 5 slide rheostats 6, the 4th binding post 12 these somascopes in series; Master switch 2 and direct supply 13 telechiric device in series of teleswitch; This remote control circuit is also arranged on table meter part; The power unit of the first binding post 9, controlled switch 3, power supply 7, power switch 8 and second binding post 10 these somascopes in series, at power supply 7 and power switch 8 two ends voltage display screens 4 in parallel in order to monitor supply voltage.
Master switch 2 and the controlled switch 3 of teleswitch all adopt point driving switch (have elastic force, press connection, unclamp disconnection), and controlled switch 3 keeps synchronous regime with teleswitch 2.
During work, somascope mains side the first binding post 9, the second binding post 10 are connected with tested mutual inductor 1 primary side L1, L2 respectively, check that instrument meter side the 3rd binding post 11, the 4th binding post 12 are connected with mutual inductor 1 secondary side K1, K2 respectively.The master switch 2 of pressing teleswitch unclamps immediately.Now, the controlled switch 3 of teleswitch is also connected immediately and is disconnected.Will in primary side loop, produce a pulse a like this.According to electromagnetic induction principle, pulse a can induce pulse b at secondary side, and pulse b can cause the indicator of milliammeter 5 to deflect, and whether correct judges first and second side pole according to the situation of the deflection of the indicator of milliammeter 5.According to the difference of mutual inductor ratio, somascope mains side, table meter side can be changed with the connected mode of mutual inductor primary side, secondary side (is that somascope mains side is connected with mutual inductor secondary side, check that instrument meter side is connected with mutual inductor primary side), take and make the significant connected mode of milliammeter deflection as Best link mode while checking.
During concrete enforcement, voltage display screen 4 is used for display power supply voltage, prevents that brownout impact from checking, slide rheostat 6 is used for regulating range.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (3)
1. a remote mutual inductor polarity somascope, is characterized in that, comprises power supply (7), power switch (8), detector switch, slide rheostat (6), a plurality of binding post and milliammeter (5); Described a plurality of binding post comprises the first binding post (9), the second binding post (10), the 3rd binding post (11) and the 4th binding post (12);
One end of described power supply (7) is connected with one end of described detector switch, and the other end of described detector switch is connected with described the first binding post (9); The other end of described power supply (7) is connected with described the second binding post (10) by described power switch (8); Described the first binding post (9) and described the second binding post (10) are connected to the two ends of the primary side of detected mutual inductor (1);
One end of described milliammeter (5) is connected with described the 3rd binding post (11), the other end of described milliammeter (5) is connected with one end of described slide rheostat (6), and the other end of described slide rheostat (6) is connected with described the 4th binding post (12); Described the 3rd binding post (11) and described the 4th binding post (12) are connected to the two ends of the secondary side of detected mutual inductor (1).
2. a kind of remote mutual inductor polarity somascope according to claim 1, is characterized in that, described detector switch is teleswitch; Described teleswitch comprises controlled switch (3) and master switch (2);
One end of described controlled switch (3) is connected with described power supply (7), and the other end of described controlled switch (3) is connected with described the first binding post (9); The two ends of described master switch (2) are connected to the two ends of a direct supply (13), are controlled the opening and closing of described controlled switch (3) by described master switch (2).
3. a kind of remote mutual inductor polarity somascope according to claim 1, is characterized in that, is parallel with a voltage display screen (4), to show the voltage of described power supply on described power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357184.2U CN203894361U (en) | 2014-06-27 | 2014-06-27 | Long-distance mutual inductor polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357184.2U CN203894361U (en) | 2014-06-27 | 2014-06-27 | Long-distance mutual inductor polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894361U true CN203894361U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357184.2U Expired - Fee Related CN203894361U (en) | 2014-06-27 | 2014-06-27 | Long-distance mutual inductor polarity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196140A (en) * | 2018-01-31 | 2018-06-22 | 国网青海省电力公司西宁供电公司 | A kind of Portable voltage mutual inductor no-load voltage ratio tester |
| CN112596003A (en) * | 2020-11-28 | 2021-04-02 | 国网天津市电力公司 | One-key type secondary alternating current loop polarity tester and testing method |
-
2014
- 2014-06-27 CN CN201420357184.2U patent/CN203894361U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196140A (en) * | 2018-01-31 | 2018-06-22 | 国网青海省电力公司西宁供电公司 | A kind of Portable voltage mutual inductor no-load voltage ratio tester |
| CN112596003A (en) * | 2020-11-28 | 2021-04-02 | 国网天津市电力公司 | One-key type secondary alternating current loop polarity tester and testing method |
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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: 20141022 Termination date: 20210627 |