CN204536522U - A kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire - Google Patents
A kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire Download PDFInfo
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- CN204536522U CN204536522U CN201520123510.8U CN201520123510U CN204536522U CN 204536522 U CN204536522 U CN 204536522U CN 201520123510 U CN201520123510 U CN 201520123510U CN 204536522 U CN204536522 U CN 204536522U
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Abstract
The utility model relates to a kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire, first connection terminal and the first patch jack are arranged on the left side of self-checking unit panel, second connection terminal and the second patch jack are arranged on the right side of self-checking unit panel, one end of first wire clamp is connected with the first patch jack by shielded lead, the other end of the first wire clamp is connected by the signal input part of coaxial shielded cable with self-checking unit panel, one end of second wire clamp is connected with the second patch jack by shielded lead, the other end of the second wire clamp is connected by the signal output part of coaxial shielded cable with self-checking unit panel.Therefore structure of the present utility model is simple, easy to operate, only need an operated by personnel, easy to use, p-wire is connected on self-checking unit, whether p-wire is good only to need single stepping just can judge, improves the work efficiency of site test, ensure that the accuracy of Transformer Winding frequency response characteristic test result.
Description
Technical field
The utility model belongs to transformer self-checking field, particularly relates to a kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire.
Background technology
At present, transformer is when suffering short-circuit current rush or being collided in transportation, and all likely winding deformation phenomenon occurs, it will directly affect the safe operation of transformer.Detect deformation of transformer winding with frequency response analysis, have that detection sensitivity is high, onsite application is convenient, can judge the advantages such as deformation of transformer winding when transformer does not hang cover, be widely applied in power industry.
At present, domestic each test unit generally adopts Transformer Winding frequency response characteristic tester to detect deformation of transformer winding situation.Tester is made up of main frame, notebook computer and p-wire, and frequency detection range is 1kHz ~ 1MHz.Because test frequency is higher, various disturbing factor all can affect the accuracy of measurement.P-wire adopts coaxial shielded cable, easily causes p-wire two ends screen layer or core loose contact or disconnection after repeatedly using at the scene, and these defects cannot be found by range estimation.Use defective p-wire, the measurement result of mistake can be obtained, cause erroneous judgement and the misjudgement of tester.Frequency response tester has a sine wave exciting signal output terminal and two independently input end, need three p-wires to coordinate to detect, as long as a wherein existing defects, the accuracy of measurement result will be affected, scene needs to use multimeter to the detection of p-wire, coordinated by two staff, because p-wire one end is bnc interface, the test pen of multimeter is thicker, be inconvenient to detect, and workload is comparatively large, therefore self-inspection is not often carried out to p-wire in scene, brings uncertain hidden danger to the accuracy of measurement result.
Utility model content
The utility model is solve existing transformer frequencies response analysis method to detect being inconvenient to of existing and detect, workload is comparatively large, the technical matters that measurement result accuracy is lower and provide the quick self-checking device of Transformer Winding frequency response characteristic p-wire that a kind of structure is simple, easy to install, increase work efficiency.
The technical scheme that the utility model is taked for the technical matters existed in solution known technology is:
The quick self-checking device of Transformer Winding frequency response characteristic p-wire of the present utility model, the quick self-checking device of this Transformer Winding frequency response characteristic p-wire comprises: the first connection terminal, the second connection terminal, the first patch jack, the second patch jack, the first wire clamp, the second wire clamp, self-checking unit panel;
First connection terminal and the first patch jack are arranged on the left side of self-checking unit panel, second connection terminal and the second patch jack are arranged on the right side of self-checking unit panel, one end of first wire clamp is connected with the first patch jack by shielded lead, the other end of the first wire clamp is connected by the signal input part of coaxial shielded cable with self-checking unit panel, one end of second wire clamp is connected with the second patch jack by shielded lead, and the other end of the second wire clamp is connected by the signal output part of coaxial shielded cable with self-checking unit panel.
The utility model can also adopt following technical measures:
In the utility model, there are power switch and power light in self-checking unit panel upper right side, chargeable direct supply is set, self-checking unit lower panels is provided with three interfaces, be respectively signal end, input end and output terminal, have two status indicator lamps above signal end and input end, have two status indicator lamps above output terminal, self-checking unit panel upper left side is test button.
Further, coaxial shielded cable is fixed in the first wire clamp handle, two coaxial screening cable cores are welded in First Line chuck portion conducting end, shielded lead is drawn from another handle of the first wire clamp, 3rd coaxial shielded cable is fixed in the second wire clamp handle, coaxial screening cable core is welded in the second wire clamp head conducting end, shielded lead is drawn from another handle of the second wire clamp, be connected with the resistance of 50 Ω between coaxial screening cable core and shielded lead, resistance is embedded in the second wire clamp handle.
The advantage that the utility model has and good effect are: because structure of the present utility model is simple, easy to operate, only need an operated by personnel, easy to use, p-wire is connected on self-checking unit, whether p-wire is good only to need single stepping just can judge, improves the work efficiency of site test, ensure that the accuracy of Transformer Winding frequency response characteristic test result.
Accompanying drawing explanation
Fig. 1 is the quick self-checking apparatus structure schematic diagram of the Transformer Winding frequency response characteristic p-wire that the utility model embodiment provides;
Fig. 2 is the quick self-checking device internal electric connection layout of the Transformer Winding frequency response characteristic p-wire that the utility model embodiment provides;
In figure: 1, the first connection terminal; 2, the second connection terminal; 3, the first patch jack; 4, the second patch jack; 5, the first wire clamp; 6, the second wire clamp; 7, self-checking unit panel.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows: the utility model does not exist the innovation of software or method.
Refer to Fig. 1 and Fig. 2:
As shown in Figure 1, the quick self-checking device of the Transformer Winding frequency response characteristic p-wire of the utility model embodiment mainly comprises: the first connection terminal 1, second connection terminal 2, first patch jack 3, second patch jack 4, first wire clamp 5, second wire clamp 6, self-checking unit panel 7;
First connection terminal 1 and the first patch jack 3 are arranged on the left side of self-checking unit panel 7, second connection terminal 2 and the second patch jack 4 are arranged on the right side of self-checking unit panel 7, one end of first wire clamp 5 is connected with the first patch jack 3 by shielded lead, the other end of the first wire clamp 5 is connected by the signal input part of coaxial shielded cable with self-checking unit panel 7, one end of second wire clamp 6 is connected with the second patch jack 4 by shielded lead, and the other end of the second wire clamp 6 is connected by the signal output part of coaxial shielded cable with self-checking unit panel 7.
The principle of work of the utility model embodiment:
Accompanying drawing 1 is this device panel arrangement and wiring schematic diagram.There are power switch and power light in panel upper right side.Have chargeable direct supply in device, when turning on the power switch, green power supply pilot lamp is bright shows that electric quantity of power supply is sufficient, and green power supply pilot lamp does not work and shows that power supply needs charging.Lower panels has three interfaces, matches with the BNC connector of p-wire, is respectively signal end, input end and output terminal.Have two status indicator lamps above signal end and input end, when the p-wire that signal end is connected with input end is normal, green normal pilot lamp is bright, and when the p-wire that signal end and/or input end connect is abnormal, red pilot lamp to be checked is bright.Also have two status indicator lamps above output terminal, when the p-wire that output terminal connects is normal, green normal pilot lamp is bright, and when the p-wire that output terminal connects is abnormal, red pilot lamp to be checked is bright.Panel upper left side is test button, namely starts p-wire self-inspection, unclamp and namely stop self-inspection after pressing.This device left and right side has a connection terminal and a patch jack respectively.Before p-wire self-inspection, test clamp is clipped on connection terminal, and wire clamp shielded lead is received on patch jack.P-wire is made up of three coaxial shielded cables.Wherein, two coaxial shielded cables are fixed in same first wire clamp 5 handle, and two cores are welded in the first wire clamp 5 head conducting end, and two shielding lines are drawn from first another handle of wire clamp 5.3rd coaxial shielded cable is fixed in the second wire clamp 6 handle, core is welded in the second wire clamp 6 head conducting end, shielding line is drawn from second another handle of wire clamp 6, is connected with the resistance of 50 Ω between core and shielding line, and resistance is embedded in the second wire clamp 6 handle.
Accompanying drawing 2 is internal electric connection layout of this device.Switch S controls cut-offfing of direct supply, and HG0 is green power supply pilot lamp, HG1 and HG2 is two normal pilot lamp of green, HR1 and HR2 is two redness pilot lamp to be checked.Test button SB controls the on/off of current relay.Current relay KA1 controls the action of normally opened contact KA1a and normally closed contact KA1b, and one end connects power supply positive electricity, and the other end is connected with the first connection terminal 1.Current relay KA2 controls the action of normally opened contact KA2a and normally closed contact KA2b, and one end connects power supply positive electricity, and the other end is connected with the first connection terminal 1.Current relay KA3 controls the action of normally opened contact KA3a and normally closed contact KA3b, and one end connects power supply positive electricity, and the other end is connected with the first patch jack 3.Current relay KA4 controls the action of normally opened contact KA4a and normally closed contact KA4b, and one end connects power supply positive electricity, and the other end is connected with the first patch jack 3.Current relay KA5 controls the action of normally opened contact KA5a and normally closed contact KA5b, and one end connects power supply positive electricity, and the other end is connected with the second connection terminal 2.Current relay KA6 controls the action of normally opened contact KA6a and normally closed contact KA6b, and one end connects the positive negative electricity of power supply respectively by two resistance R2, and the other end is connected with resistance R1, the second connection terminal 2, resistance R1 resistance 50 Ω.Resistance in resistance R1, R2 and the second wire clamp 6 forms balancing circuitry, and when p-wire is normal, in current relay KA6, no current flows through, and when p-wire is abnormal, out-of-balance current flows through relay K A6 makes its action.The core of signal end, input end and output terminal and shielding are connected to the negative electricity of power supply.
Using method of the present utility model and self-inspection flow process as follows:
1, the first wire clamp 5 and the second wire clamp 6 are clipped on the first connection terminal 1 and the second connection terminal 2 respectively, the shielded lead of two wire clamps are received respectively on the first patch jack 3 and the second patch jack 4.The BNC connector of two coaxial shielded cable ends on the first wire clamp 5 is connected to signal end and input end, the BNC connector of the coaxial shielded cable end on the second wire clamp 6 is connected to output terminal.
2, closed electrical source switch S.When electric quantity of power supply is sufficient, HG0 is bright for green power supply pilot lamp, shows that self-checking unit can normally work.If green power supply pilot lamp HG0 does not work, show that electric quantity of power supply is not enough, need charge in time.
3, normally closed contact KA1b, KA2b, KA3b, KA4b, KA5b, KA6b is in closure state, and red pilot lamp HR1, HR2 to be checked are bright.Normally opened contact KA1a, KA2a, KA3a, KA4a, KA5a, KA6a are in off-state, and green normal pilot lamp HG1, HG2 do not work.
4, Pen-down detection button SB, current relay KA1, KA2, KA3, KA4, KA5, KA6 switch on power positive electricity.When all p-wires are without exception, current relay KA1, KA2, KA3, KA4, KA5 action, KA6 is failure to actuate.Normally closed contact KA1b, KA2b, KA3b, KA4b, KA5b and normally opened contact KA6a disconnect, and red pilot lamp HR1, HR2 to be checked go out.Normally opened contact KA1a, KA2a, KA3a, KA4a, KA5a and normally closed contact KA6b close, and green normal pilot lamp HG1, HG2 are bright,
5, when any one or two of two coaxial shielded cables on the first wire clamp 5 occur exception simultaneously, current relay KA1, KA2, KA3, KA4 place branch road has at least a branch current not reach actuating of relay setting valve, normally closed contact KA1b, KA2b, KA3b, KA4b have at least one to be in closure state, and red pilot lamp HR1 to be checked is bright; Normally opened contact KA1a, KA2a, KA3a, KA4a have at least one to be in off-state, and green normal pilot lamp HG1 does not work.Now, the normal pilot lamp above device surface partitioned signal end and input end does not work, pilot lamp to be checked is bright, shows corresponding coaxial shielded cable internal abnormality.
6, when the coaxial shielded cable on the second wire clamp 6 occurs abnormal, current relay KA5 is failure to actuate and/or KA6 action.Normally closed contact KA5b and/or normally opened contact KA6a closes, and red pilot lamp HR2 to be checked is bright; Normally opened contact KA5a and/or normally closed contact KA6b disconnects, and green normal pilot lamp HG2 does not work.Now, the normal pilot lamp above device panel output terminal does not work, pilot lamp to be checked is bright, shows corresponding coaxial shielded cable internal abnormality.
7, unclamp test button SB, disconnecting power switch S, complete self-inspection work.The normal p-wire of self-detection result or siding is used to carry out Transformer Winding frequency response characteristic measurement.The p-wire to be checked to self-detection result, does further diagnosis and management after having tested at the scene again.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (3)
1. the quick self-checking device of a Transformer Winding frequency response characteristic p-wire, it is characterized in that, the quick self-checking device of this Transformer Winding frequency response characteristic p-wire comprises: the first connection terminal, the second connection terminal, the first patch jack, the second patch jack, the first wire clamp, the second wire clamp, self-checking unit panel;
First connection terminal and the first patch jack are arranged on the left side of self-checking unit panel, second connection terminal and the second patch jack are arranged on the right side of self-checking unit panel, one end of first wire clamp is connected with the first patch jack by shielded lead, the other end of the first wire clamp is connected by the signal input part of coaxial shielded cable with self-checking unit panel, one end of second wire clamp is connected with the second patch jack by shielded lead, and the other end of the second wire clamp is connected by the signal output part of coaxial shielded cable with self-checking unit panel.
2. the quick self-checking device of Transformer Winding frequency response characteristic p-wire as claimed in claim 1, it is characterized in that, there are power switch and power light in self-checking unit panel upper right side, chargeable direct supply is set, self-checking unit lower panels is provided with three interfaces, is respectively signal end, input end and output terminal, has two status indicator lamps above signal end and input end, have two status indicator lamps above output terminal, self-checking unit panel upper left side is test button.
3. the quick self-checking device of Transformer Winding frequency response characteristic p-wire as claimed in claim 1, it is characterized in that, coaxial shielded cable is fixed in the first wire clamp handle, two coaxial screening cable cores are welded in First Line chuck portion conducting end, shielded lead is drawn from another handle of the first wire clamp, 3rd coaxial shielded cable is fixed in the second wire clamp handle, coaxial screening cable core is welded in the second wire clamp head conducting end, shielded lead is drawn from another handle of the second wire clamp, the resistance of 50 Ω is connected with between coaxial screening cable core and shielded lead, resistance is embedded in the second wire clamp handle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520123510.8U CN204536522U (en) | 2015-03-03 | 2015-03-03 | A kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520123510.8U CN204536522U (en) | 2015-03-03 | 2015-03-03 | A kind of quick self-checking device of Transformer Winding frequency response characteristic p-wire |
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| CN204536522U true CN204536522U (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458096A (en) * | 2020-04-21 | 2020-07-28 | 山东省产品质量检验研究院 | Transformer is with experimental apparatus that shocks resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458096A (en) * | 2020-04-21 | 2020-07-28 | 山东省产品质量检验研究院 | Transformer is with experimental apparatus that shocks resistance |
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