CN203551720U - Mutual inductor polarity testing device - Google Patents
Mutual inductor polarity testing device Download PDFInfo
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- CN203551720U CN203551720U CN201320633353.6U CN201320633353U CN203551720U CN 203551720 U CN203551720 U CN 203551720U CN 201320633353 U CN201320633353 U CN 201320633353U CN 203551720 U CN203551720 U CN 203551720U
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- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
This utility model provides a mutual inductor polarity testing device, comprising two testing rods and a testing instrument. The tops of the testing rods are provided with U-shaped hooks; the inner sides of the U-shaped hooks are provided with elastic fixing clamps; the outsides of the U-shaped hooks are provided with terminal connection jacks; two one-time side input terminal jacks and two two-time side output terminal jacks are positioned on the surface of the testing instrument; a subtractive polarity LED indication lamp and an additive polarity LED indication lamp are arranged above the one-time side input terminal jacks and the two-time side output terminal jacks; and a power supply switch and a power supply indication lamp are arranged on the surface of the testing instrument. The mutual inductor polarity testing device has a small volume, light weight, simple structure, and easy carrying and operation, and integrates the testing devices into one body, so that only one people can perform testing mutual inductor polarity, the danger that personnel need to climb high for operation is avoided and the risk that the personnel falls from high heights can be eliminated.
Description
Technical field
The utility model relates to a kind of electrical equipment testing tool, more particularly relates to a kind of transformer polarity testing device.
Background technology
Electric current, voltage transformer (VT) (hereinafter to be referred as mutual inductor) are the important electrical equipments of electric system; it is bearing isolation between high and low pressure system and the high pressure amount function to the conversion of low pressure amount; the correctness of its polarity; both affected protective relaying device correct operation; affect again measurement and the operation monitoring of electric system, when serious, go back entail dangers to equipment and personal safety.In real work, be no lack of and due to mutual inductor polarity mistake, cause the situation that the protective devices such as differential, female poor, distance can not correct operation; therefore in protection check, when newly mutual inductor being installed putting into operation and change mutual inductor secondary cable, the correctness of check mutual inductor polarity is especially aobvious important.When mutual inductor polarity is tested, use dry cell as power supply in the past, instrument all adopts pointer multimeter (MF10 series), during polarity test, according to power switch closure, the positive and negative swaying direction that disconnects moment indicator judge mutual inductor once with the polarity corresponding relation of secondary, but owing to being subject to the impact of the factors such as accuracy of instrument and mutual inductor ratio, in test, the amplitude of fluctuation of indicator is also not obvious sometimes, often occurs polarity erroneous judgement phenomenon.Simultaneously in test process, owing to being subject to the restriction (35KV and above too high apart from ground) of mutual inductor installation site, need staff to climb to carry out connecing of test wire on mutual inductor framework to draw, one needs again to switch an other phase after testing mutually, so repeatedly upper and lower, not only wasted the time but also make secondary staff for a long time in work high above the ground environment, there is certain high-rise working danger, moreover used the restricted of instrument, at mutual inductor terminal box place, ground, also will someone carry out secondary paraphase and meter reading, whole the several staff of need of work coordinate and can complete.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of transformer polarity testing device, solves staff's work high above the ground and improves the problem of mutual inductor polarity test accuracy.
The utility model is achieved through the following technical solutions: a kind of transformer polarity testing device, comprise two reference test bars and a test instrumentation, the top of described reference test bar arranges U-shaped hook, and the inner side of U-shaped hook arranges elastic fixing clip, and the arranged outside of U-shaped hook has terminal connections jack; On the surface of described test instrumentation, be provided with two primary side input end jacks and two secondary side output terminal jacks, the top of primary side input end jack and secondary side output terminal jack arranges subtractive polarity LED light and additive polarity LED light, is also provided with power switch and power light on the surface of test instrumentation.
In such scheme, the body of rod of described reference test bar adopts insulation material to make.
In such scheme, the body of rod of described reference test bar is set to Multi-section retractable structure.
In such scheme, described U-shaped hook is made by conductive material.
The beneficial effect of a kind of transformer polarity testing device of the utility model is:
1, reference test bar small volume and less weight, the body of rod adopts Multi-section expansion structure, and the height retractable of different electric pressure mutual inductors is adjusted; Reduce staff's labour intensity, avoided staff's ascend operation danger, thoroughly got rid of the danger of falling that personnel's ascend operation causes;
2, subtract, additive polarity shows with corresponding LED lamp respectively, and has instantaneous maintenance function, the uncertainty that there will not be pointer table meter to swing, simple and directly understands, has effectively prevented the erroneous judgement phenomenon occurring with pointer multimeter personnel;
3, little, lightweight, simple in structure, easy to carry, the convenient operation of this covering device volume, is integrated in one original testing apparatus, and whole mutual inductor polarity test job only needs a people just can complete.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of transformer polarity testing device of the utility model;
Fig. 2 is transformer polarity testing device principle wiring schematic diagram.
In figure: 1.U shape hook, 2. elastic fixing clip, 3. wire, 4. primary side input end jack L2,5. primary side input end jack L1,6. subtractive polarity LED light, 7. power switch, 8. power light, 9. additive polarity LED light, 10. test instrumentation, 11. secondary side output terminal jack K1,12. secondary side output terminal jack K2,13. wires, 14. tests are compared with thin bar, and 15. adjust fixing lock, 16. test compared with thick bar, 17. terminal connections jacks, 18. reference test bars.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, a kind of transformer polarity testing device of the utility model is further described:
Fig. 1 is the structural representation of a kind of transformer polarity testing device of the utility model, Fig. 2 is transformer polarity testing device principle wiring schematic diagram, in figure, this transformer polarity testing device, comprise two reference test bars 18 and a test instrumentation 10, the body of rod of reference test bar 18 adopts insulation material to make, the body of rod of reference test bar 18 is set to Multi-section retractable structure, test is connected compared with thick bar 16 with test by adjusting fixing lock 15 compared with thin bar 14, unscrew and adjust fixing lock 15, test can be in test compared with the interior free-extension of thick bar 16 compared with thin bar 14, fixing lock 15 is adjusted in locking, fixed the length that test is stretched out compared with thin bar 14, the top of reference test bar 18 arranges U-shaped hook 1, and the inner side of U-shaped hook 1 arranges elastic fixing clip 2, and the arranged outside of U-shaped hook 1 has terminal connections jack 17, on the surface of test instrumentation 10, be provided with primary side input end jack L15 and primary side input jack L24 and secondary side output terminal jack K111 and secondary side output terminal jack K212, the top of primary side input end jack L15 and secondary side output terminal jack K111 arranges subtractive polarity LED light 6 and additive polarity LED light 9, is also provided with power switch 7 and power light 8 on the surface of test instrumentation 10.
This device adopts direct current platen press, the instantaneous former limit of the mutual inductor winding that adds, and variation DC voltage amount and then the self-induced e.m.f direction producing in secondary winding are differentiated the corresponding relation of its winding and Secondary Winding.
The course of work is take current transformer as example explanation, during test, connection terminal L1, the L2 of this device is connected to primary side input end L1, the L2 of current transformer by wire 3 and wire 13 correspondences, secondary side output terminal K1, the K2 of the corresponding access of connection terminal K1, the K2 current transformer of this device.Open after the power switch 7 of this device, power light 8 is bright, then press the test button (SA) on this device panel, as being now subtractive polarity, the KJ1 actuating of relay, it is bright that KJ1 contact is connected corresponding LED lamp, L1, K1 same polarity are described, electrician is defined as: electric current flows out from mutual inductor primary side L1 inflow, secondary side K1, is now judged to be subtractive polarity, also referred to as same polarity.If instead be additive polarity, the KJ2 actuating of relay, it is bright that KJ2 contact is connected corresponding LED lamp, L1 and K1 reversed polarity.After distinguishing test result, press reset button, polarity pilot lamp extinguishes, and this test process finishes, and prepares operation next time.As mutual inductor is installed aloft, first the U-shaped hook 1 of reference test bar 18 is hung on tested current transformer, the L1 of device, L2 connecting line adopt and are fixedly connected on telescopic insulating reference test bar bar, articulate L1, the L2 end to mutual inductor.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the method for above-mentioned announcement and technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a transformer polarity testing device, is characterized in that: comprise two reference test bars and a test instrumentation, the top of described reference test bar arranges U-shaped hook, and the inner side of U-shaped hook arranges elastic fixing clip, and the arranged outside of U-shaped hook has terminal connections jack; On the surface of described test instrumentation, be provided with two primary side input end jacks and two secondary side output terminal jacks, the top of primary side input end jack and secondary side output terminal jack arranges subtractive polarity LED light and additive polarity LED light, is also provided with power switch and power light on the surface of test instrumentation.
2. a kind of transformer polarity testing device according to claim 1, is characterized in that: the body of rod of described reference test bar adopts insulation material to make.
3. a kind of transformer polarity testing device according to claim 1, is characterized in that: the body of rod of described reference test bar is set to Multi-section retractable structure.
4. a kind of transformer polarity testing device according to claim 1, is characterized in that: described U-shaped hook is made by conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633353.6U CN203551720U (en) | 2013-10-14 | 2013-10-14 | Mutual inductor polarity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633353.6U CN203551720U (en) | 2013-10-14 | 2013-10-14 | Mutual inductor polarity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551720U true CN203551720U (en) | 2014-04-16 |
Family
ID=50469817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320633353.6U Expired - Lifetime CN203551720U (en) | 2013-10-14 | 2013-10-14 | Mutual inductor polarity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342770A (en) * | 2018-10-31 | 2019-02-15 | 国网天津市电力公司 | Outdoor CT polarity test auxiliary rod |
| CN109633514A (en) * | 2018-12-29 | 2019-04-16 | 国网山东省电力公司淄博供电公司 | A kind of active defense formula electric power mutual-inductor polarity tester |
-
2013
- 2013-10-14 CN CN201320633353.6U patent/CN203551720U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342770A (en) * | 2018-10-31 | 2019-02-15 | 国网天津市电力公司 | Outdoor CT polarity test auxiliary rod |
| CN109633514A (en) * | 2018-12-29 | 2019-04-16 | 国网山东省电力公司淄博供电公司 | A kind of active defense formula electric power mutual-inductor polarity tester |
| CN109633514B (en) * | 2018-12-29 | 2021-04-06 | 国网山东省电力公司淄博供电公司 | Active protection type polarity tester for power transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
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| CX01 | Expiry of patent term |