CN204287295U - A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device - Google Patents
A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device Download PDFInfo
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- CN204287295U CN204287295U CN201420834197.4U CN201420834197U CN204287295U CN 204287295 U CN204287295 U CN 204287295U CN 201420834197 U CN201420834197 U CN 201420834197U CN 204287295 U CN204287295 U CN 204287295U
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- leakage current
- data acquisition
- zinc oxide
- discharging
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- 230000001012 protector Effects 0.000 title claims abstract description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 29
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000032683 aging Effects 0.000 abstract description 3
- 238000011155 quantitative monitoring Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical compound [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device described in the utility model, comprises four on-line checkingi devices, current transformer, adopt unit, data processing unit, unit's four zinc oxide valve plates, four discharging gaps, four capacitors, and report to the police and display list; Described four capacitors are connected in parallel on the two ends of four discharging gaps respectively; The input end of described data acquisition unit is connected with four detecting devices respectively, described current transformer is serially connected on the wire between data acquisition unit and four detecting devices, and the output terminal of described data acquisition unit is connected with warning and display unit through data processing unit.This practical new construction is simple, easy to use, the size cases of leakage current when utilizing the pick-up unit being arranged on zinc oxide valve plate input end obtain voltage signal when there is superpotential and normally run, and have recorded superpotential number of times, and to valve block aging conditions near real-time quantitative monitoring, with trouble-saving generation.
Description
Technical field
The utility model relates to on-line measuring device, is specifically related to a kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device.
Background technology
In order to ensure various large consumer, as the safe operation of transformer, switch, motor etc., be all connected in parallel overvoltage protection device on equipment side in a lot of situation, in existing market, protector is furnished with on-line monitoring all substantially, and operating characteristic is also more stable.But be substantially all realize discharging action monitoring; when some special occasions uses; require very high to the Leakage Current of protector, the excessive operating characteristic directly having influence on protector of Leakage Current, even can cause protector own collapse to cause power circuit to trip because protector leakage current is excessive.For understanding the electric property of the combined overvoltage protection device of AC gapless three; very effective means are exactly the Leakage Current under measuring its ac operation voltage, by judging the quality of protector to each point of quantitative analysis in Leakage Current and causing the reason of deterioration.And current used voltage protector is also deposited cash and is gone wrong with because of zinc paste or discharging gap and cause the situation that cannot play a protective role.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device; this protector structure is simple, easy to use; can not only better proterctive equipment; avoid and cause the situation that cannot play a protective role to occur because zinc paste or discharging gap go wrong, and the leakage current on-line monitoring of attainable protector.
For achieving the above object, the utility model have employed following technical scheme:
Plant alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device, comprise four on-line checkingi devices, current transformer, adopt unit, data processing unit, unit's four zinc oxide valve plates, four discharging gaps, four capacitors, and report to the police and display list; Wherein one end of first, second and third detecting device connects A, B, C three phase terminals of proterctive equipment respectively, the other end of first, second and third detecting device is connected with one end of first, second and third discharging gap respectively, the other end of first, second and third discharging gap is connected with one end of three zinc oxide valve plates respectively, and the other end of first, second and third discharging gap is successively through the 4th discharging gap, the 4th zinc oxide valve plate, the 4th detecting device ground connection; Described four capacitors are connected in parallel on the two ends of four discharging gaps respectively; The input end of described data acquisition unit is connected with four detecting devices respectively, described current transformer is serially connected on the wire between data acquisition unit and four detecting devices, and the output terminal of described data acquisition unit is connected with warning and display unit through data processing unit.
The electric capacity of described capacitor is 25 times of the interelectrode capacity amount of discharging gap.
The beneficial effects of the utility model: the utility model not only structure is simple, rationally, functional, Self-controlled accesses electrical network automatically in configuration, and operation voltage is stablized, good energy-conserving effect.By discharging gap and zinc oxide valve plate composition protection branch road; be not only applicable to the superpotential protection of the higher-order of oscillation of cut-offfing inductive load generation; and atmospheric over-voltage and amplitude switching overvoltage can be limited preferably, and have alternate superpotential and phase ground over-voltage protection function concurrently.In device described in the utility model, add on-line measuring device; the size cases of leakage current when utilizing the pick-up unit being arranged on zinc oxide valve plate input end obtain voltage signal when there is superpotential and normally run; momentarily reflect the over-voltage condition betiding protected equipment two ends; have recorded superpotential number of times; and to valve block aging conditions near real-time quantitative monitoring, with trouble-saving generation.
Accompanying drawing explanation
Fig. 1 is electrical schematic of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1, a kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device described in the present embodiment, comprise four on-line checkingi devices, current transformer, adopts unit, data processing unit, unit four zinc oxide valve plates Y1, Y2, Y3, Y4, four discharging gaps X1, X2, X3, X4, four capacitors C1, C2, C3, C4, and report to the police and display list; Wherein one end of first, second and third detecting device 1,2,3 connects A, B, C three phase terminals of proterctive equipment respectively, the other end of first, second and third detecting device 1,2,3 is connected with one end of first, second and third discharging gap X1, X2, X3 respectively, the other end of first, second and third discharging gap X1, X2, X3 is connected with one end of three zinc oxide valve plate Y1, Y2, Y3 respectively, and the other end of first, second and third discharging gap X1, X2, X3 is successively through the 4th discharging gap X4, the 4th zinc oxide valve plate Y4, the 4th detecting device 4 ground connection; In order to eliminate the negative effect of the stray capacitance over the ground produced in assembling process, these four capacitors C1, C2, C3, C4 are connected in parallel on the two ends of four discharging gaps X1, X2, X3, X4 respectively; The input end of data acquisition unit is connected with four detecting devices respectively, and current transformer is serially connected on the wire between data acquisition unit and four detecting devices, and the output terminal of data acquisition unit is connected with warning and display unit through data processing unit.The electric capacity of capacitor C1, C2, C3, C4 is 25 times of the interelectrode capacity amount of discharging gap N1, N2, N3, N4, the electric discharge of discharging gap can be made evenly, stop over the ground stray capacitance on the impact of this protector.
The utility model not only structure is simple, and rationally, functional, Self-controlled accesses electrical network automatically in configuration, and operation voltage is stablized, good energy-conserving effect.By discharging gap and zinc oxide valve plate composition protection branch road; be not only applicable to the superpotential protection of the higher-order of oscillation of cut-offfing inductive load generation; and atmospheric over-voltage and amplitude switching overvoltage can be limited preferably, and have alternate superpotential and phase ground over-voltage protection function concurrently.In device described in the utility model, add on-line measuring device; the size cases of leakage current when utilizing the pick-up unit being arranged on zinc oxide valve plate input end obtain voltage signal when there is superpotential and normally run; momentarily reflect the over-voltage condition betiding protected equipment two ends; have recorded superpotential number of times; and to valve block aging conditions near real-time quantitative monitoring, with trouble-saving generation.
The above embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall into the protection domain that claims of the present utility model are determined.
Claims (2)
1. an alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device, it is characterized in that: comprise four on-line checkingi devices, current transformer, adopt unit, data processing unit, unit's four zinc oxide valve plates (Y1, Y2, Y3, Y4), four discharging gaps (X1, X2, X3, X4), four capacitors (C1, C2, C3, C4), and report to the police and display list, wherein first, two, three detecting devices (1, 2, 3) one end meets the A of proterctive equipment respectively, B, C three phase terminals, first, two, three detecting devices (1, 2, 3) the other end is respectively with first, two, three discharging gap (X1, X2, X3) one end is connected, first, two, three discharging gap (X1, X2, X3) the other end respectively with three zinc oxide valve plate (Y1, Y2, Y3) one end is connected, first, two, three discharging gap (X1, X2, X3) the other end is successively through the 4th discharging gap (X4), 4th zinc oxide valve plate (Y4), 4th detecting device (4) ground connection, described four capacitors (C1, C2, C3, C4) are connected in parallel on the two ends of four discharging gaps (X1, X2, X3, X4) respectively, the input end of described data acquisition unit is connected with four detecting devices respectively, described current transformer is serially connected on the wire between data acquisition unit and four detecting devices, and the output terminal of described data acquisition unit is connected with warning and display unit through data processing unit.
2. a kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device according to claim 1, is characterized in that: the electric capacity of described capacitor (C1, C2, C3, C4) is 25 times of the interelectrode capacity amount of discharging gap (N1, N2, N3, N4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834197.4U CN204287295U (en) | 2014-12-25 | 2014-12-25 | A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834197.4U CN204287295U (en) | 2014-12-25 | 2014-12-25 | A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287295U true CN204287295U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420834197.4U Expired - Fee Related CN204287295U (en) | 2014-12-25 | 2014-12-25 | A kind of alternating gap Modular Three-Phase Overvoltage Protector leakage current on-line measuring device |
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| Country | Link |
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| CN (1) | CN204287295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253297A (en) * | 2016-08-24 | 2016-12-21 | 合肥智博电气有限公司 | Overvoltage protection device |
-
2014
- 2014-12-25 CN CN201420834197.4U patent/CN204287295U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253297A (en) * | 2016-08-24 | 2016-12-21 | 合肥智博电气有限公司 | Overvoltage protection device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20181225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |