CN206563762U - HVDC standard voltage divider - Google Patents
HVDC standard voltage divider Download PDFInfo
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- CN206563762U CN206563762U CN201720188614.6U CN201720188614U CN206563762U CN 206563762 U CN206563762 U CN 206563762U CN 201720188614 U CN201720188614 U CN 201720188614U CN 206563762 U CN206563762 U CN 206563762U
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- loop
- major loop
- resistance
- protective
- voltage divider
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Abstract
A kind of HVDC standard voltage divider; it is characterized by; divider includes two independent loops of major loop and protective loop; major loop and protective loop are in parallel; major loop is composed in series by up to a hundred resistance units; it is divided into high-voltage arm R2, low-voltage arm R1, divider protective loop is composed in series by multiple resistive element R3, equivalent potential screen is carried out to major loop.The utility model adds a protective loop in parallel with major loop, and is coiled in main resistor periphery in order, plays shielding action, and strong antijamming capability remains to accurate measurement under the adverse circumstances such as highfield interference.R1 output ends are directly connected with the high-precision multimeter such as Agilent, Fluke, and measurement accuracy is high, it is adaptable to which measurement accuracy requires the DC voltage accurate measurement place such as 0.2%, 0.1%, 0.05%.
Description
Technical field
The utility model is a kind of divider, more particularly to divider.
Background technology
Direct current standard voltage divider generally is electric resistance partial pressure type structure now, as shown in figure 1, by high-voltage arm R2, low pressure
Arm R1 is constituted, and high-voltage arm resistance R2 is composed in series by up to a hundred resistance units and is spirally coiled on lucite insulating support, is filled
In the lucite tube full of insulating oil, low-voltage arm resistance R1 is in metal shielding box.The divider precision of this structure
It is low, poor anti jamming capability, in the case where highfield is disturbed, measurement result extremely unreliable.
The content of the invention
The purpose of this utility model is to overcome shortcoming present in present technology that there is provided a kind of height of strong antijamming capability
Press direct current standard voltage divider.
The technical scheme that the utility model is used is a kind of HVDC standard voltage divider, and it is characterized by, divider
Including two independent loops of major loop and protective loop, major loop and protective loop are in parallel, and major loop is by up to a hundred resistance lists
Member is composed in series, and is divided into high-voltage arm R2, low-voltage arm R1, protective loop is in series by multiple resistive element R3, to major loop
Carry out equivalent potential screen.
The utility model be improved on the basis of existing direct current standard voltage divider add one with major loop simultaneously
The protective loop of connection, strong antijamming capability.
The resistance R2 of major loop high-voltage arm is spirally coiled on lucite insulating support, the resistance of divider protective loop
R3 is coiled in main resistor periphery in order, plays shielding action.
The resistance R2 of major loop is formed by Ni-C r B alloy wire coilings.
There is the adjustable resistance of parallel connection on low-voltage arm R1, R1/ (R1+R2) is equal to 1/1000.
The utility model adds a protective loop in parallel with major loop, and is coiled in main resistor periphery in order,
Shielding action is played, strong antijamming capability remains to accurate measurement under the adverse circumstances such as highfield interference.R1 output ends directly with
The high accuracy multimeter connection such as Agilent, Fluke, measurement accuracy is high, it is adaptable to measurement accuracy requirement 0.2%, 0.1%, 0.05%
Deng DC voltage accurate measurement place.
Brief description of the drawings
Fig. 1 is existing direct current standard voltage divider principle schematic
Fig. 2 is principle schematic of the present utility model
Fig. 3 is the schematic diagram that high-voltage arm R2 and protective resistance R3 is wound
Wherein：The protective loop of 1 major loop 2.
Embodiment
The utility model is described in detail with reference to view, the following examples can make this professional skill
Art personnel more understand the utility model, but do not limit the utility model in any form.
As shown in Figure 2,3, a kind of HVDC standard voltage divider, primarily directed to more than 50kV high pressure, it includes two
Individual independent loop, major loop 1 and protective loop 2, major loop are composed in series by hundreds of resistance units, be divided into high-voltage arm R2,
Low-voltage arm R1, the resistance number and resistance that different voltage levels are used is different, by taking the divider of 100kV grades as an example：Its
Mesohigh arm R2, including the resistance unit that 100 nominal values are 2M Ω, low-voltage arm R1 nominal value is about 200k Ω, and it is by more
Branch resistance is made up of series-parallel mode, and adjustable resistance is parallel with wherein, finally makes R1/ (R1+R2)=1/1000.Protection
Loop, is in series by 100 5M Ω resistive element R3, and equivalent potential screen is carried out to major loop.Major loop high-voltage arm
100 resistance R2 are spirally coiled on lucite insulating support, and protective resistance R3 is coiled in main resistor R2 peripheries in order, rises
Shielding action, major loop resistance R2 and shielding protection resistance R3 is complete to be mounted in the lucite tube full of insulating oil.Low-voltage arm
Resistance R1 is in metal shielding box.The resistive element of major loop is formed using high resistant Ni-C r B alloy wire coilings, and it has
Stability is high, voltage coefficient is small, temperature coefficient is low and has the characteristics of just having negative, and multiple resistance components in series also have when using
The mutual compensating action of certain root.R1 output ends are directly connected with the high-precision multimeter such as Agilent, Fluke, defeated without considering
Enter the influence of impedance.
Claims (4)
1. a kind of HVDC standard voltage divider, it is characterised in that it includes major loop（1）And protective loop（2）Two independences
Loop, major loop（1）And protective loop（2）Parallel connection, major loop（1）It is composed in series by up to a hundred resistance units, is divided into height
Pressure arm R2, low-voltage arm R1, protective loop（2）It is composed in series by multiple resistive element R3, equivalent potential screen is carried out to major loop.
2. a kind of HVDC standard voltage divider according to claim 1, it is characterised in that the resistance of major loop high-voltage arm
R2 is spirally coiled on lucite insulating support, and the resistance R3 of protective loop is coiled in main resistor periphery in order, plays shielding
Effect.
3. a kind of HVDC standard voltage divider according to claim 1, it is characterised in that the resistance R2 of major loop by
Ni-C r B alloy wire coilings are formed.
4. a kind of HVDC standard voltage divider according to claim 1, it is characterised in that have parallel connection on low-voltage arm R1
Adjustable resistance, R1/ (R1+R2) is equal to 1/1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188614.6U CN206563762U (en) | 2017-03-01 | 2017-03-01 | HVDC standard voltage divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188614.6U CN206563762U (en) | 2017-03-01 | 2017-03-01 | HVDC standard voltage divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206563762U true CN206563762U (en) | 2017-10-17 |
Family
ID=60030685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720188614.6U Active CN206563762U (en) | 2017-03-01 | 2017-03-01 | HVDC standard voltage divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206563762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113721060A (en) * | 2021-07-19 | 2021-11-30 | 中国电力科学研究院有限公司 | Shielding voltage divider |
-
2017
- 2017-03-01 CN CN201720188614.6U patent/CN206563762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113721060A (en) * | 2021-07-19 | 2021-11-30 | 中国电力科学研究院有限公司 | Shielding voltage divider |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 350002 No. 618 Jinshan Avenue, Fuzhou City, Fujian Province, 59 Three-storey Puhua Industrial Park Patentee after: Fujian Puhua Power Technology Co., Ltd. Address before: 350002 Jinshan Avenue 618 Industrial Park, Fuzhou City, Fujian Province Patentee before: Fujian Puhua Electronics Science & Technology Co., Ltd. |
|
| CP03 | Change of name, title or address |