CN205388617U - Low pressure arm of dual -purpose type divider - Google Patents
Low pressure arm of dual -purpose type divider Download PDFInfo
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- CN205388617U CN205388617U CN201620155696.XU CN201620155696U CN205388617U CN 205388617 U CN205388617 U CN 205388617U CN 201620155696 U CN201620155696 U CN 201620155696U CN 205388617 U CN205388617 U CN 205388617U
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- voltage arm
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- 230000009977 dual effect Effects 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a low pressure arm of dual -purpose type divider, which comprises an outer shell, the upper end installation insulating lid of shell, lower extreme mounting plate, be equipped with capacitor body in the shell, capacitor body is including being located the top panel on shell top, be located the lower panel of shell bottom, and with the top panel with lower panel interconnect's resistance and a plurality of electric capacity, wherein the top panel with the insulating lid links to each other, down the panel with the bottom plate links to each other. Low pressure arm can not only be applicable to impulse voltage and can be applicable to power frequency voltage again, and is favorable to improving divider frequency response.
Description
Technical field
This utility model relates to a kind of low-voltage arm, refers in particular to the low-voltage arm of a kind of dual-purpose potentiometer.
Background technology
The measurement apparatus of power-frequency voltage and surge voltage is generally voltage divider.Process of the test will need measurement high voltage to convert the low-voltage signal being available for double measurement measurement device to.Owing to power-frequency voltage is continuous voltage, cycle length, frequency are low, require low to the frequency response of potentiometer, and therefore power frequency potentiometer is generally purely capacitive potentiometer, does not generally absorb meritorious energy.Impulse voltage divider is the potentiometer measuring thunder and lightning all-wave or operation all-wave, voltage waveform is the intermittent blasts that frequency is high, energy is less but requires that the frequency response of potentiometer is very good, therefore impulse voltage divider is generally RC divider, the vibration for bringing on damping high-voltage lead-in wire of the damping resistance in high-voltage arm.
The low-voltage arm of existing impulse voltage divider is Chinese utility model patent document CN204065203U such as, it discloses the low-voltage arm of a kind of impacting with high pressure resitstance voltage divider, and including metallic shield cylinder, described metallic shield cylinder two ends are separately installed with metal base plate and insulating lid；It is coaxially installed with panel in described metallic shield cylinder；Described panel includes the two pieces of panels being provided with low resistance and wavefront build-out resistor therebetween, and described wavefront build-out resistor is coaxial with described metallic shield cylinder, and described low resistance includes the circumference equal dividing cloth four low resistances around described wavefront build-out resistor；Described resistance is formed in epoxy rods by Ka Masi Double-wire parallel wound.Although the firm practicality of above-mentioned low-voltage arm, it is easily installed use, suitable in all Resistor Divider for Impulse Voltage Measurements, but above-mentioned potentiometer is owing to adopting resistance divider, do not utilize any electric capacity, therefore the low-voltage arm formed is not applied for power-frequency voltage, it is therefore desirable to design the low-voltage arm of a kind of dual-purpose potentiometer that can not only can be suitably used for again power-frequency voltage suitable in surge voltage.
Utility model content
For this, technical problem to be solved in the utility model is in that to overcome the low-voltage arm of voltage divider of the prior art to be mostly only applicable to the problem of surge voltage thus providing a kind of and not only can being suitable for surge voltage but also can be suitably used for the low-voltage arm of dual-purpose potentiometer of power-frequency voltage.
For solving above-mentioned technical problem, the low-voltage arm of a kind of dual-purpose potentiometer of the present utility model, including shell, insulating lid is installed in the upper end of described shell, lower end mounting base, is provided with capacitance body in described shell, described capacitance body include being positioned at described housing top end top panel, be positioned at described shell bottom lower panel and with described top panel and the interconnective resistance of described lower panel and multiple electric capacity, wherein said top panel is connected with described insulating lid, and described lower panel is connected with described base plate.
In an embodiment of the present utility model, described resistance one end is connected with described top panel by high pressure flexible circuit conductor, and the other end is connected with the cable connector on described base plate through described lower panel by high pressure flexible circuit conductor.
In an embodiment of the present utility model, the center of described base plate is located at by described cable connector, and is positioned in cable female seat.
In an embodiment of the present utility model, described capacitance body is coaxial with described shell.
In an embodiment of the present utility model, described resistance is coaxial with described shell, and the plurality of electric capacity is evenly distributed on around described resistance.
In an embodiment of the present utility model, described resistance and condenser welding are connected between described top panel and described lower panel.
In an embodiment of the present utility model, the side of described base plate is provided with ground terminal.
In an embodiment of the present utility model, described low-voltage arm is placed in the outlet box of standard capacitor.
In an embodiment of the present utility model, one end of described low-voltage arm is connected with described standard capacitor by high pressure flexible circuit conductor, and the other end is connected with coaxial cable.
In an embodiment of the present utility model, described top panel and described lower panel are printed circuit board and double-sided copper-clad.
Technique scheme of the present utility model has the advantage that compared to existing technology
The low-voltage arm of potentiometer described in the utility model, owing to being provided with in described capacitance body and described top panel and the interconnective resistance of described lower panel and multiple shunt capacitance, therefore can not only be applicable to surge voltage and can be suitably used for again power-frequency voltage, and the impact of single electric capacity stray inductance can be reduced.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model and in conjunction with accompanying drawing, this utility model is described in further detail, wherein
Fig. 1 is the structural representation of dual-purpose potentiometer low-voltage arm described in the utility model.
Fig. 2 is the circuit connection diagram of dual-purpose potentiometer described in the utility model.
Detailed description of the invention
Refer to shown in Fig. 1, the present embodiment provides the low-voltage arm 1 of a kind of dual-purpose potentiometer, including shell 10, insulating lid 11 is installed in the upper end of described shell 10, lower end mounting base 12, it is provided with capacitance body 20 in described shell 10, described capacitance body 20 include being positioned at described shell 11 top top panel 21, be positioned at described shell 11 bottom lower panel 22 and with described top panel 21 and the interconnective resistance of described lower panel 22 23 and multiple shunt capacitance 24, wherein said top panel 21 is connected with described insulating lid 11, and described lower panel 22 is connected with described base plate 12.
Above-mentioned is core technology field described in the utility model, the low-voltage arm 1 of dual-purpose potentiometer described in the utility model, including shell 10 and capacitance body 20, insulating lid 11 is installed in the upper end of wherein said shell 10, lower end mounting base 12, described capacitance body 20 is located in described shell 10, is conducive to eliminating the impact of peripheral electromagnetic field.Described capacitance body 20 includes top panel 21, lower panel 22, resistance 23 and multiple shunt capacitance 24, wherein said top panel 21 is positioned at the top of described shell 11, described lower panel 22 is positioned at the bottom of described shell 11, described resistance 23 is connected with each other with described top panel 21 and described lower panel 22, for eliminating the waveform catadioptric measured in cable, strengthen measurement accuracy.The plurality of shunt capacitance 24 is also all connected with each other with described top panel 21 and described lower panel 22, and the induction structure of multiple shunt capacitance 24 is low, can reduce the impact of single electric capacity stray inductance.Described top panel 21 is connected with described insulating lid 11, it is prevented that described low-voltage arm upper end and the short circuit of described shell, and described lower panel 22 is connected with described base plate 12, and being conducive to reducing inductance affects accordingly on potentiometer transient state.The low-voltage arm of potentiometer described in the utility model, owing to being provided with in described capacitance body 20 and described top panel 21 and the interconnective resistance of described lower panel 22 23 and multiple shunt capacitance 24, therefore can not only be applicable to surge voltage and can be suitably used for again power-frequency voltage.
Described resistance 23 one end is connected with described top panel 21 by high pressure flexible circuit conductor, the other end is connected with the cable connector 13 on described base plate 12 through described lower panel 22 by high pressure flexible circuit conductor, specifically, the other end of described resistance 23 is connected with the core of described cable connector 13, the waveform catadioptric measured in cable can be eliminated by described resistance 23, strengthen measurement accuracy.The center of described base plate 12 is located at by described cable connector 13, so that described cable connector 13 and described resistance keep coaxial, and is positioned in cable female seat, thus not only compact conformation, advantageously reducing stray parameter affects, and is easily installed use.The side of described base plate 12 is provided with ground terminal 14, is connected with the earth by ground terminal 14.
Described capacitance body 20 is coaxial with described shell 10 so that it is compact conformation, volume are little, sturdy and durable, and stray parameter impact is little.Specifically, described resistance 23 is coaxial with described shell 10, and the plurality of electric capacity 24 is evenly distributed on described resistance 23 around, not only makes its compact conformation, volume little, sturdy and durable, and reduces stray parameter impact.Described resistance 23 and multiple shunt capacitance 24 are all welded between described top panel 21 and described lower panel 22, not only make it connect reliable but also are prone to processing.
As in figure 2 it is shown, described low-voltage arm 1 is placed in the outlet box of standard capacitor, including the second electric capacity C2 and with described second resistance R in parallel for electric capacity C2, very short owing to connecting wire, decrease lead-in inductance, thus being conducive to improving potentiometer frequency response.One end of described low-voltage arm 1 is connected with described standard capacitor, specifically, one end of described low-voltage arm 1 is connected with the electric capacity C1 of described standard capacitor by high pressure flexible circuit conductor, and the other end is connected with coaxial cable 2, and described coaxial cable 2 is connected with digital record, consequently facilitating install and use.
Described top panel 21 and described lower panel 22 are the printed circuit board that 2mm is thick, and double-sided copper-clad, described resistance 23 is noninductive pulse resistance, in the present embodiment, five mica capacitors in parallel are set in described capacitance body 20, and described mica capacitor is 10nF, 2kV, described shell 10 is metallic shield cylinder.
The present invention measures the just vertical standard capacitor of voltage 360kV, surge voltage 500kV based on power frequency, the high voltage arm capacitor of this capacitor is 100pF, design capacitance amount is 50nF, intrinsic standoff ratio is about 500:1, and performance is good, it is simple to the low-voltage arm installed and used, under ensureing the measurable premise of digital recorder, improve signal to noise ratio, when using low pressure square wave source to carry out step response, it is simple to described digital oscilloscope signal acquisition simultaneously.
To sum up, technical scheme described in the utility model has the advantage that
1. the low-voltage arm of dual-purpose potentiometer described in the utility model, including shell and capacitance body, insulating lid, lower end mounting base are installed in the upper end of wherein said shell, and described capacitance body is located in described shell, are conducive to eliminating the impact of peripheral electromagnetic field.Described capacitance body includes top panel, lower panel, resistance and multiple shunt capacitance, wherein said top panel is positioned at the top of described shell, described lower panel is positioned at the bottom of described shell, described resistance is connected with each other with described top panel and described lower panel, for eliminating the waveform catadioptric measured in cable, strengthen measurement accuracy.The plurality of shunt capacitance is also all connected with each other with described top panel and described lower panel, and the induction structure of multiple shunt capacitance is low, can reduce the impact of single electric capacity stray inductance.Described top panel is connected with described insulating lid, it is prevented that described low-voltage arm upper end and the short circuit of described shell, and described lower panel is connected with described base plate, and being conducive to reducing inductance affects accordingly on potentiometer transient state.The low-voltage arm of potentiometer described in the utility model, owing to being provided with in described capacitance body and described top panel and the interconnective resistance of described lower panel and multiple shunt capacitance, therefore can not only be applicable to surge voltage and can be suitably used for again power-frequency voltage.
2. the low-voltage arm of dual-purpose potentiometer described in the utility model, described resistance one end is connected with described top panel by high pressure flexible circuit conductor, the other end is connected with the cable connector on described base plate through described lower panel by high pressure flexible circuit conductor, the waveform catadioptric measured in cable can be eliminated by described resistance, strengthen measurement accuracy.The center of described base plate is located at by described cable connector, so that described cable connector and described resistance keep coaxial, and is positioned in cable female seat, thus not only compact conformation, advantageously reducing stray parameter affects, and is easily installed use.
Obviously, above-described embodiment is only for clearly demonstrating example, not the restriction to embodiment.For those of ordinary skill in the field, other multi-form change or variation can also be made on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation still in this utility model create protection domain among.
Claims (10)
1. the low-voltage arm of a dual-purpose potentiometer, including shell, insulating lid is installed in the upper end of described shell, lower end mounting base, it is characterized in that: in described shell, be provided with capacitance body, described capacitance body include being positioned at described housing top end top panel, be positioned at described shell bottom lower panel and with described top panel and the interconnective resistance of described lower panel and multiple electric capacity, wherein said top panel is connected with described insulating lid, and described lower panel is connected with described base plate.
2. the low-voltage arm of dual-purpose potentiometer according to claim 1, it is characterised in that: described resistance one end is connected with described top panel by high pressure flexible circuit conductor, and the other end is connected with the cable connector on described base plate through described lower panel by high pressure flexible circuit conductor.
3. the low-voltage arm of dual-purpose potentiometer according to claim 2, it is characterised in that: the center of described base plate is located at by described cable connector, and is positioned in cable female seat.
4. the low-voltage arm of dual-purpose potentiometer according to claim 1, it is characterised in that: described capacitance body is coaxial with described shell.
5. the low-voltage arm of dual-purpose potentiometer according to claim 4, it is characterised in that: described resistance is coaxial with described shell, and the plurality of electric capacity is evenly distributed on around described resistance.
6. the low-voltage arm of dual-purpose potentiometer according to claim 1 or 5, it is characterised in that: described resistance and condenser welding are connected between described top panel and described lower panel.
7. the low-voltage arm of dual-purpose potentiometer according to claim 1, it is characterised in that: the side of described base plate is provided with ground terminal.
8. the low-voltage arm of dual-purpose potentiometer according to claim 1, it is characterised in that: described low-voltage arm is placed in the outlet box of standard capacitor.
9. the low-voltage arm of dual-purpose potentiometer according to claim 8, it is characterised in that: one end of described low-voltage arm is connected with described standard capacitor by high pressure flexible circuit conductor, and the other end is connected with coaxial cable.
10. the low-voltage arm of dual-purpose potentiometer according to claim 1, it is characterised in that: described top panel and described lower panel are printed circuit board and double-sided copper-clad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155696.XU CN205388617U (en) | 2016-03-01 | 2016-03-01 | Low pressure arm of dual -purpose type divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155696.XU CN205388617U (en) | 2016-03-01 | 2016-03-01 | Low pressure arm of dual -purpose type divider |
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| Publication Number | Publication Date |
|---|---|
| CN205388617U true CN205388617U (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620155696.XU Active CN205388617U (en) | 2016-03-01 | 2016-03-01 | Low pressure arm of dual -purpose type divider |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422203A (en) * | 2017-07-03 | 2017-12-01 | 中国电力科学研究院 | A kind of system and method for checking impulse current shunt |
| CN109116079A (en) * | 2018-10-24 | 2019-01-01 | 云南电网有限责任公司电力科学研究院 | A kind of inscribed touch type capacitor divider for GIS |
| CN109324216A (en) * | 2018-11-13 | 2019-02-12 | 中国电力科学研究院有限公司 | Low-voltage arm and transient voltage measuring device |
-
2016
- 2016-03-01 CN CN201620155696.XU patent/CN205388617U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422203A (en) * | 2017-07-03 | 2017-12-01 | 中国电力科学研究院 | A kind of system and method for checking impulse current shunt |
| CN109116079A (en) * | 2018-10-24 | 2019-01-01 | 云南电网有限责任公司电力科学研究院 | A kind of inscribed touch type capacitor divider for GIS |
| CN109116079B (en) * | 2018-10-24 | 2021-06-08 | 云南电网有限责任公司电力科学研究院 | Internal contact type capacitive voltage divider for GIS |
| CN109324216A (en) * | 2018-11-13 | 2019-02-12 | 中国电力科学研究院有限公司 | Low-voltage arm and transient voltage measuring device |
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| C14 | Grant of patent or utility model | ||
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