CN105044428A - Plug type voltage sensor with power supply and conductive shielding - Google Patents
Plug type voltage sensor with power supply and conductive shielding Download PDFInfo
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- CN105044428A CN105044428A CN201510300196.0A CN201510300196A CN105044428A CN 105044428 A CN105044428 A CN 105044428A CN 201510300196 A CN201510300196 A CN 201510300196A CN 105044428 A CN105044428 A CN 105044428A
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Abstract
The invention relates to a plug type voltage sensor with power supply and conductive shielding, and belongs to the field of power measuring instruments of the power system. The voltage sensor can be directly mounted on a power connector satisfying the IEEE-386 or EN50180/EN50181 standard, the sensor body is small in size, and a space which is reserved to install an American or European cable plug in an onsite device is large enough to install the voltage sensor. The voltage sensor can be additionally installed needless of reconstructing the onsite power device, the application cost is reduced, and convenience is provided for construction. The voltage sensor is internally provided with a high-voltage fuse, a high-voltage attenuator and a power conversion circuit, voltage sensing signals and low-voltage work power output are provided, and the voltage sensor can directly drive electronic measuring equipment needless providing low-voltage work power onsite.
Description
Technical field
The present invention relates to a kind of high-voltage voltage sensors, mainly be used in more than 6kV, in below 35kV shielded cable transmission system, be connected with the high-tension electricity connector meeting IEEE-386 or EN50180/EN50181 standard, carry out the conversion of High AC voltage signal from high pressure to low pressure, and provide working power for Low-voltage Electronic measurement mechanism.
Background technology
At present, in 6 ~ 35kV electric system, in the primary equipment such as box-type substation, ring main unit, switch cubicle, cable branch box based on shielded cable transmission of electricity, many employings have exterior shield based on IEEE-386(American Standard) or EN50180/EN50181(Europe superscript) electric connector of standard is interconnected, this makes device space structure can design closely, thus the volume of reduction equipment significantly, but, if the measurement carrying out voltage signal at these equipment places, there is following difficulty:
If first adopts existing electromagnetic transformer, although solve voltage signal conversion and to low-voltage electronic equipment powerup issue, but because electromagnetic transformer volume is large, cannot install additional in existing cabinet, the larger cabinet of design is separately needed to install, and need the electric stress process from shielded cable to unshielded cable, further increase the volume of cabinet, add more application cost and inconvenience.
The second, have a kind of scheme to be inserted in the power connector plug based on IEEE-386 or EN50181 standard by resistance divider or condenser divider, the Chinese patent being 200820126528.3 as the patent No. discloses a kind of cable plug-in voltage sensor.This scheme makes the volume of sensor to narrow down to can be directly encased in existing equipment, and the conversion of voltage signal can be carried out, but low-voltage supply can not be provided for connected electronic installation, be restricted when not having the occasion of low-tension supply to use at the scene.
Three, another kind of scheme adopts fiber optic sensor technology measurement voltage signal, and Fibre Optical Sensor is installed in the power connector plug of IEEE-386 or EN50181 standard.But there is the low grade of temperature stability still unsolved technical barrier at present in this technology, cannot accomplish higher accuracy, and same existence cannot provide the problem of electronic equipment low-voltage supply.
Four, for non-traditional electromagnetic potential sensor, for connected electronic equipment low-voltage power supply solution, have at present and adopt current transformer power supply scheme and adopt capacitance decompression scheme.Wherein current transformer power supply scheme can not continuous working at high tension loop load current hour, limits range of application.Existing capacitance decompression scheme, need by electronic equipment maximum power dissipation design capacitance electric current, by the power taking of parallel voltage-stabilizing principle constant voltage mode, this occasion altered a great deal in electronic equipment consumed power reduces power supplying efficiency, add the power consumption of equipment, and add heat radiation difficulty.
Five, voltage divider and do not have fuse to protect between decompression capacitor and high-tension line, if voltage divider or the breakdown meeting of decompression capacitor cause the short trouble of electric system in existing scheme.And directly in the sensor body of the outer conductive shield of band, increase conventional high-pressure fuse, shelf depreciation problem will be caused.
Summary of the invention
Technical matters to be solved by this invention is; the plug-type voltage sensor of a kind of charged and conductive shield is provided; it is applicable to the electric connector of IEEE-386 or EN50181 standard, have outside can charged touch screen layer, the protection of internal high pressure fuse, low-tension supply exports, higher accuracy and the better advantage such as stability.
Technical scheme of the present invention is:
A plug-type voltage sensor for charged and conductive shield, is characterized in that: it comprises high pressure splicing ear, and high pressure splicing ear side is provided with operation interface; Outside operation interface and high pressure splicing ear joint portion and high pressure splicing ear arranged outside have interior semi-conductive layer; Outside operation interface and interior semi-conductive layer arranged outside have insulator; Insulator outside surface is provided with outer semiconducting layer, and outer semiconducting layer is connected with ground terminal; Insulator inside is provided with high-tension fuse; High-tension fuse comprises the fusion tube of cylindric ceramic pipe form, and fusion tube two ends are equipped with the first conduction end cap and the second conduction end cap respectively; The outer wall of fusion tube is provided with two ends to conduct electricity end cap and second respectively with first and conduct electricity the resistive film that end cap is connected; The first described conduction end cap is connected with high pressure splicing ear; Insulator inside is provided with high-voltage bleeder; High-voltage bleeder comprises high-voltage bleeder first electrode and high-voltage bleeder second electrode of setting parallel to each other, also comprises high-voltage arm resistor and low-voltage arm resistance device; Wherein high-voltage bleeder first electrode is between high-tension fuse and high-voltage bleeder second electrode; High-voltage arm resistor slant setting is between high-voltage bleeder first electrode and high-voltage bleeder second electrode, one end is near high-voltage bleeder first electrode, the other end is near high-voltage bleeder second electrode, and the angle between high-voltage arm resistor and high-voltage bleeder first electrode and high-voltage bleeder second electrode is less than 30 °; Low-voltage arm resistance device is positioned at outside the space that high-voltage bleeder first electrode and high-voltage bleeder second electrode form; The lead-in wire of high-voltage arm resistor near high-voltage bleeder first electrode one end is connected with high-voltage bleeder first electrode, high-voltage arm resistor to go between with one end of low-voltage arm resistance device near the lead-in wire of high-voltage bleeder second electrode one end and is connected, and the other end lead-in wire of low-voltage arm resistance device is connected with ground terminal; Described lead-in wire is also connected with the high impedance signal output terminal of high-voltage bleeder; Insulator inside is also provided with the high-voltage capacitor that rated voltage is not less than 6kV; High-voltage capacitor comprises high-voltage capacitor first electrode and high-voltage capacitor second electrode; The second described conduction end cap connects high-voltage bleeder first electrode, and the second described conduction end cap also directly connects high-voltage capacitor first electrode or connects high-voltage capacitor first electrode by the first high pressure damped resistor; High-voltage capacitor second electrode is directly connected with capacitor voltage-dropping power supply output terminal or is connected with capacitor voltage-dropping power supply output terminal by the second high pressure damped resistor.
Also comprise negative impedance power converting circuit; The power input of negative impedance power converting circuit is connected with capacitor voltage-dropping power supply output terminal, and its power output end is connected with the signal accessory power outlet for externally exporting; Negative impedance power converting circuit adjusts the equiva lent impedance of power input circuit according to the size of required output power, when the power needing to export increases, by internal adjustment, power input circuit equiva lent impedance is increased, thus the dividing ratios of connecting in bleeder circuit making itself and high-voltage capacitor form increases, in order to improve power input; When needing the power reduction exported, by internal control, the equiva lent impedance of power input circuit is reduced, thus the dividing ratios of connecting in bleeder circuit that itself and high-voltage capacitor are formed reduce, in order to reduce power input.
Also comprise the signal conditioning circuit of being powered by negative impedance power converting circuit; The signal input part of signal conditioning circuit and high pressure dividing potential drop
The high impedance signal output terminal of device connects, and output terminal is connected with described signal accessory power outlet; The high impedance voltage signal that high-voltage bleeder exports by signal conditioning circuit is transformed into voltage signal in low impedance, and is externally exported by signal accessory power outlet after carrying out electrical isolation.
Also be provided with interior conductive separator plate; Interior conductive separator plate is arranged on insulator and is connected with ground terminal with between negative impedance power converting circuit and signal conditioning circuit.
The material of outer semiconducting layer and interior semi-conductive layer is conductive rubber; The material of insulator is insulation silica gel.
Operation interface is suitable with the high-tension electricity connector meeting IEEE-386 or EN50181 standard.
Good effect of the present invention is:
The first, voltage sensor of the present invention can directly be plugged on meet IEEE-386 or EN50180/EN50181 standard electric connector on, and body part volume is very little, this voltage sensor is enough installed in the space that installing cables plug originally reserved by field apparatus, therefore on-the-spot power equipment just can install this voltage sensor additional without the need to transformation, without the need to increasing cabinet separately, save application cost, facilitate construction.
The second, the high tension voltage voltage divider of voltage sensor of the present invention has pin-point accuracy and high-temperature stability feature.
Three, the power output circuit of voltage sensor of the present invention can be powered for Low-voltage Electronic measuring equipment, and has higher conversion efficiency under various loading condition.
Four, internal high-voltage fuse in voltage sensor of the present invention, therefore ensure that the security that voltage sensor runs, the resistive film that high-tension fuse is arranged reduces local discharging level, extends serviceable life.
In sum, voltage sensor of the present invention is applied in 6 ~ 35kV electric system based on places such as the box-type substation of shielded cable transmission of electricity, ring main unit, switch cubicle and cable branch box, carry out voltage measurement, there is cost lower, accuracy, reliability and stability are higher, and use convenient outstanding feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention two.
Fig. 2 is the structural representation of the embodiment of the present invention one.
Fig. 3 is the structural representation of the embodiment of the present invention three.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one
The present embodiment relates to and a kind ofly meets the basic model T connector formula charged of IEEE-386 standard and the plug-type voltage sensor of conductive shield for 10kV electric system.
As shown in Figure 2, the plug-type voltage sensor of the present embodiment comprises high pressure splicing ear 13, high pressure splicing ear 13 two sides are respectively arranged with the operation interface 14 for matching with the cover pipe cone section of IEEE-386 AN connector, and operation interface 14 is identical with the 10kV system T-shaped cable accessory plug of IEEE-386 standard in physical dimension.Outside operation interface 14 and high pressure splicing ear 13 joint portion and high pressure splicing ear 13 arranged outside have interior semi-conductive layer 12, outside operation interface 14 and interior semi-conductive layer 12 arranged outside have insulator 11.Insulator 11 outside surface is provided with outer semiconducting layer 10, and outer semiconducting layer 10 is connected with ground terminal 15.
Insulator 11 inside is provided with high-tension fuse 20.High-tension fuse 20 comprises the fusion tube 24 of cylindric ceramic pipe form, and the first conduction end cap 21 and the second conduction end cap 22 is equipped with at fusion tube 24 two ends respectively.Be provided with melt 26 in the inner chamber of fusion tube 24, the two ends of melt 26 are conducted electricity end cap 21 and second respectively and are conducted electricity end cap 22 and be connected with first.Hole place between melt 26 and fusion tube 24 inner chamber is filled with the arc quenching material 25 of silica sand material.
The outer wall of fusion tube 24 is provided with two ends to conduct electricity end cap 21 and second respectively with first and conduct electricity the resistive film 23 that end cap 22 is connected, resistive film 23 is sintered on fusion tube 24 outer wall equably by high-pressure glass glaze resistor manufacture craft.The resistance of resistive film 23 is 400M Ω.
The first described conduction end cap 21 is connected with high pressure splicing ear 13.
Insulator 11 inside is provided with high-voltage bleeder.High-voltage bleeder comprises high-voltage bleeder first electrode 30 and high-voltage bleeder second electrode 31 of setting parallel to each other, also comprises high-voltage arm resistor 32 and low-voltage arm resistance device 33.Wherein high-voltage bleeder first electrode 30 is between high-tension fuse 20 and high-voltage bleeder second electrode 31.
High-voltage bleeder first electrode 30 is for being of a size of 120mm × 80mm current-carrying plate, and high-voltage bleeder second electrode 31 is the current-carrying plate of wide 80mm, two electrode separation 20mm.High-voltage arm resistor 32 is of a size of the chip resistor of 100mm × 25mm for length and width, and resistance value is 90M Ω.High-voltage arm resistor 32 slant setting is between high-voltage bleeder first electrode 30 and high-voltage bleeder second electrode 31, and one end is near high-voltage bleeder first electrode 30, and the other end is near high-voltage bleeder second electrode 31.The projection of high-voltage arm resistor 32 in high-voltage bleeder first electrode 30 vertical direction and high pressure dividing potential drop first electrode 30 outer edge symmetrical.The lead-in wire of high-voltage arm resistor 32 near high-voltage bleeder first electrode 30 one end is connected with high-voltage bleeder first electrode 30, and the lead-in wire of high-voltage arm resistor 32 near high-voltage bleeder second electrode 31 one end is drawn from the through hole high-voltage bleeder second electrode 31.
Low-voltage arm resistance device 33 resistance value is 36k Ω; Low-voltage arm resistance device 33 to be positioned at outside high-voltage bleeder second electrode 31 and to install in the position in the middle part of high-voltage bleeder second electrode 31, low-voltage arm resistance device 33 one end lead-in wire goes between with high-voltage arm resistor 32 one end that the through hole on high-voltage bleeder second electrode 31 is drawn and is connected, and is connected with the high impedance signal output terminal 34 of high-voltage bleeder.The other end lead-in wire of low-voltage arm resistance device 33 is connected with ground terminal 15.
The patent No. be 201110082974.5 Chinese patent " a kind of high-impedance high-temperature stability high-voltage bleeder " disclose a kind of implementation of this high-voltage bleeder.
Insulator 11 inside is also provided with high-voltage capacitor 41, the high voltage ceramic capacitor of high-voltage capacitor 41 to be rated voltages be 10kV.High-voltage capacitor 41 comprises high-voltage capacitor first electrode 45 and high-voltage capacitor second electrode 46.The second described conduction end cap 22 connects high-voltage capacitor first electrode 45 and high-voltage bleeder first electrode 30 respectively.High-voltage capacitor second electrode 46 is direct or be connected with capacitor voltage-dropping power supply output terminal 47 by the second high pressure damped resistor.
The material of outer semiconducting layer 10 and interior semi-conductive layer 12 is conductive rubber.The material of insulator 11 is insulation silica gel.
The charged made by embodiment one and the plug-type voltage sensor of conductive shield, can be directly installed on the electrical equipment casing seat of American Standard (IEEE-386 standard), for exporting the voltage signal after dividing potential drop.But this voltage signal output impedance is very high, is easily disturbed.The charged made by embodiment one and the plug-type voltage sensor of conductive shield can provide the capacitor voltage-dropping power supply after high-voltage capacitor current limliting for low-voltage electronic equipment work, but this capacitor voltage-dropping power supply is close to constant current source character, generally needing to convert to through parallel voltage stabilizer could to power electronics after constant pressure source.
Embodiment two
The present embodiment is on the basis of embodiment one, adds negative impedance power converting circuit 42, signal conditioning circuit 43 and other accessory circuits.
As shown in Figure 1, the power input of negative impedance power converting circuit 42 is connected with capacitor voltage-dropping power supply output terminal 47, and power output end is connected with the power input of signal conditioning circuit 43 and is connected with signal accessory power outlet 44.The signal input part of signal conditioning circuit 43 is connected with the high impedance signal output terminal 34 of high-voltage bleeder, and signal output part is connected with signal accessory power outlet 44.Negative impedance power converting circuit 42 is connected with ground terminal 15 respectively with signal conditioning circuit 43.
Negative impedance power converting circuit 42 adjusts the equiva lent impedance of power input circuit according to the size of output power, when the power needing to export increases, by internal adjustment, power input circuit equiva lent impedance is increased, the dividing ratios of connecting in bleeder circuit that itself and high-voltage capacitor 41 are formed increases, thus improves power input; When needing the power reduction exported, by internal control, the equiva lent impedance of power input circuit is reduced, the dividing ratios of connecting in bleeder circuit that itself and high-voltage capacitor 41 are formed reduces, thus reduces power input.Negative impedance power converting circuit 42 adjust the equiva lent impedance of power input circuit as a result, ensureing, under the prerequisite that circuit power conversion efficiency is substantially constant, to maintain the stable of output voltage.The patent No. be 201010532364.6 Chinese patent " a kind of obtain the method for low-tension supply from high-voltage electric power circuit " disclose the implementation method of wherein a kind of negative impedance power converting circuit.
The high impedance voltage signal that high-voltage bleeder exports is transformed into voltage signal in low impedance (being realized by the operational amplifier being connected into voltage follower mode) by signal conditioning circuit 43, and carry out electrical isolation (miniature small signal mutual inductor, no-load voltage ratio 1:1) and externally exported by signal accessory power outlet 44 afterwards.By selecting the resistance value (as 36k Ω) of suitable low-voltage arm resistance device 33, make high pressure splicing ear 13 input voltage when 10kV, output voltage is about 4V.
Also the first high pressure damped resistor 40 is added to be connected in series mode between the second conduction end cap 22 and high-voltage capacitor first electrode 45 of high-tension fuse 20.High pressure damped resistor 40 can reduce dash current amplitude when high tension loop runs into lightning impulse, thus reduces the impact on negative impedance power-switching circuit 42.
The present embodiment also comprises conductive separator plate 16, and interior conductive separator plate 16 is arranged on insulator 11 and is connected with ground terminal 15 with between negative impedance power converting circuit 42 and signal conditioning circuit 43.Also comprise the outer closure plate 17 be arranged on outside negative impedance power converting circuit 42 and signal conditioning circuit 43, outer closure plate 17 is also connected with ground terminal 15.
The charged made by embodiment two and the plug-type voltage sensor of conductive shield, the voltage sensing signal of output is the Low ESR signal through isolation, and antijamming capability is strong; Power supply exports as constant pressure source pattern exports, and conversion efficiency is high.
Embodiment three
As shown in Figure 3, the operation interface 14 of the present embodiment, for meeting the corresponding operation interface of plug-type after EN50181 standard European, can be used for meeting in the power equipment of European standard.Other parts are identical with embodiment two.
Same, by changing the shape of operation interface 14, high pressure splicing ear 13 and region of interest outer conducting layer 10, the multiple voltage sensors such as such as American Standard elbow plug formula, Europe superscript front connector formula and Europe superscript elbow-type hair style can be designed.
On the basis of above-described embodiment, at capacitor voltage-dropping power supply output terminal 47, short circuiting switch can also be set with ground terminal 15 place, by capacitor voltage-dropping power supply output terminal 47 and ground terminal 15 short circuit are forbidden that negative impedance power-switching circuit 42 works temporarily, for providing convenience for shelf depreciation test.
Claims (7)
1. a plug-type voltage sensor for charged and conductive shield, is characterized in that: it comprises high pressure splicing ear (13), and high pressure splicing ear (13) side is provided with operation interface (14); Outside operation interface (14) and high pressure splicing ear (13) joint portion and high pressure splicing ear (13) arranged outside have interior semi-conductive layer (12); Operation interface (14) outside and interior semi-conductive layer (12) arranged outside have insulator (11); Insulator (11) outside surface is provided with outer semiconducting layer (10), and outer semiconducting layer (10) is connected with ground terminal (15); Insulator (11) inside is provided with high-tension fuse (20); High-tension fuse (20) comprises the fusion tube (24) of cylindric ceramic pipe form, and fusion tube (24) two ends are equipped with the first conduction end cap (21) and the second conduction end cap (22) respectively; The outer wall of fusion tube (24) is provided with two ends to conduct electricity end cap (21) and second respectively with first and conduct electricity the resistive film (23) that end cap (22) is connected; The first described conduction end cap (21) is connected with high pressure splicing ear (13); Insulator (11) inside is provided with high-voltage bleeder; High-voltage bleeder comprises high-voltage bleeder first electrode (30) and high-voltage bleeder second electrode (31) of setting parallel to each other, also comprises high-voltage arm resistor (32) and low-voltage arm resistance device (33); Wherein high-voltage bleeder first electrode (30) is positioned between high-tension fuse (20) and high-voltage bleeder second electrode (31); High-voltage arm resistor (32) slant setting is between high-voltage bleeder first electrode (30) and high-voltage bleeder second electrode (31), one end is near high-voltage bleeder first electrode (30), the other end is near high-voltage bleeder second electrode (31), and the angle between high-voltage arm resistor (32) and high-voltage bleeder first electrode (30) and high-voltage bleeder second electrode (31) is less than 30 °; Low-voltage arm resistance device (33) is positioned at outside the space that high-voltage bleeder first electrode (30) and high-voltage bleeder second electrode (31) form; The lead-in wire of high-voltage arm resistor (32) near high-voltage bleeder first electrode (30) one end is connected with high-voltage bleeder first electrode (30), the lead-in wire of high-voltage arm resistor (32) near high-voltage bleeder second electrode (31) one end goes between with one end of low-voltage arm resistance device (33) and is connected, and the other end lead-in wire of low-voltage arm resistance device (33) is connected with ground terminal (15); Described lead-in wire is also connected with the high impedance signal output terminal (34) of high-voltage bleeder; Insulator (11) inside is also provided with the high-voltage capacitor (41) that rated voltage is not less than 6kV; High-voltage capacitor (41) comprises high-voltage capacitor first electrode (45) and high-voltage capacitor second electrode (46); The second described conduction end cap (22) connects high-voltage bleeder first electrode (30), and the second described conduction end cap (22) also directly connects high-voltage capacitor first electrode (45) or connects high-voltage capacitor first electrode (45) by the first high pressure damped resistor (40); High-voltage capacitor second electrode (46) is directly connected with capacitor voltage-dropping power supply output terminal (47) or is connected with capacitor voltage-dropping power supply output terminal (47) by the second high pressure damped resistor.
2. the plug-type voltage sensor of charged as claimed in claim 1 and conductive shield, is characterized in that: also comprise negative impedance power converting circuit (42); The power input of negative impedance power converting circuit (42) is connected with capacitor voltage-dropping power supply output terminal (47), and its power output end is connected with the signal accessory power outlet (44) for externally exporting; Negative impedance power converting circuit (42) adjusts the equiva lent impedance of power input circuit according to the size of required output power, when the power needing to export increases, by internal adjustment, power input circuit equiva lent impedance is increased, thus the dividing ratios of connecting in bleeder circuit making itself and high-voltage capacitor (41) form increases, in order to improve power input; When needing the power reduction exported, by internal control, the equiva lent impedance of power input circuit is reduced, thus the dividing ratios of connecting in bleeder circuit that itself and high-voltage capacitor (41) are formed reduce, in order to reduce power input.
3. the plug-type voltage sensor of charged as claimed in claim 2 and conductive shield, is characterized in that: also comprise by bearing
The signal conditioning circuit (43) that impedance power translation circuit (42) is powered; The signal input part of signal conditioning circuit (43) is connected with the high impedance signal output terminal (34) of high-voltage bleeder, and output terminal is connected with described signal accessory power outlet (44); The high impedance voltage signal that high-voltage bleeder exports is transformed into voltage signal in low impedance by signal conditioning circuit (43), and is externally exported by signal accessory power outlet (44) after carrying out electrical isolation.
4. the plug-type voltage sensor of charged as claimed in claim 3 and conductive shield, is characterized in that, be also provided with interior conductive separator plate (16); Interior conductive separator plate (16) is arranged on insulator (11) and is connected with ground terminal (15) with between negative impedance power converting circuit (42) and signal conditioning circuit (43).
5. the plug-type voltage sensor of charged as claimed in claim 1 or 2 or 3 or 4 and conductive shield, is characterized in that: the material of outer semiconducting layer (10) and interior semi-conductive layer (12) is conductive rubber; The material of insulator (11) is insulation silica gel.
6. the plug-type voltage sensor of charged as claimed in claim 1 or 2 or 3 or 4 and conductive shield, is characterized in that: operation interface (14) is suitable with the high-tension electricity connector meeting IEEE-386 or EN50181 standard.
7. the plug-type voltage sensor of charged as claimed in claim 6 and conductive shield, is characterized in that: operation interface (14) is suitable with the high-tension electricity connector meeting IEEE-386 or EN50181 standard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510300196.0A CN105044428B (en) | 2015-06-03 | 2015-06-03 | A kind of plug-type voltage sensor of charged and conductive shield |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510300196.0A CN105044428B (en) | 2015-06-03 | 2015-06-03 | A kind of plug-type voltage sensor of charged and conductive shield |
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| CN105044428A true CN105044428A (en) | 2015-11-11 |
| CN105044428B CN105044428B (en) | 2018-03-06 |
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| EP3364196A1 (en) * | 2017-02-20 | 2018-08-22 | Arteche Centro de Tecnologia, A.I.E. | High voltage measuring plug device |
| CN109154628A (en) * | 2016-04-04 | 2019-01-04 | 伊顿智能动力有限公司 | integrated voltage sensor |
| CN110622009A (en) * | 2017-05-17 | 2019-12-27 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
| WO2022094646A1 (en) * | 2020-11-09 | 2022-05-12 | Greenwood-Power GmbH | Measuring device assembly |
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| CN102305883A (en) * | 2011-08-11 | 2012-01-04 | 烟台东方威思顿电气有限公司 | High-voltage electric energy metering device |
| CN202127229U (en) * | 2011-07-11 | 2012-01-25 | 北京合纵实科电力科技有限公司 | Cable joint |
| US20130306345A1 (en) * | 2012-05-17 | 2013-11-21 | 3M Innovative Properties Company | Dead front cable terminal with isolated shield |
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| CN1825715A (en) * | 2005-02-25 | 2006-08-30 | Nkt电缆有限公司 | Connector assembly for devices or cables to an electric installation |
| CN202127229U (en) * | 2011-07-11 | 2012-01-25 | 北京合纵实科电力科技有限公司 | Cable joint |
| CN102305883A (en) * | 2011-08-11 | 2012-01-04 | 烟台东方威思顿电气有限公司 | High-voltage electric energy metering device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109154628A (en) * | 2016-04-04 | 2019-01-04 | 伊顿智能动力有限公司 | integrated voltage sensor |
| CN109154628B (en) * | 2016-04-04 | 2021-03-19 | 伊顿智能动力有限公司 | Integrated voltage sensor |
| EP3364196A1 (en) * | 2017-02-20 | 2018-08-22 | Arteche Centro de Tecnologia, A.I.E. | High voltage measuring plug device |
| CN110622009A (en) * | 2017-05-17 | 2019-12-27 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
| US11099214B2 (en) | 2017-05-17 | 2021-08-24 | 3M Innovative Properties Company | Sensors with discrete capacitors for high voltage separable connectors |
| US11525843B2 (en) | 2017-05-17 | 2022-12-13 | 3M Innovative Properties Company | Sensors with discrete capacitors for high voltage separable connectors |
| CN110622009B (en) * | 2017-05-17 | 2023-04-07 | 3M创新有限公司 | Sensor with discrete capacitor for high voltage separable connector |
| WO2022094646A1 (en) * | 2020-11-09 | 2022-05-12 | Greenwood-Power GmbH | Measuring device assembly |
| CN116783493A (en) * | 2020-11-09 | 2023-09-19 | 格林伍德电力有限责任公司 | Measuring device assembly |
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| Publication number | Publication date |
|---|---|
| CN105044428B (en) | 2018-03-06 |
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Address after: 264003 Laishan City, Yantai province Venture Center, Shandong Applicant after: Yantai Dongfang Wisdom Electric Co., Ltd. Address before: 264003 Laishan City, Yantai province Venture Center, Shandong Applicant before: Yantai Dongfang Wisdom Electronic Co., Ltd. |
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