CN2149631Y - Precision voltage divider - Google Patents
Precision voltage divider Download PDFInfo
- Publication number
- CN2149631Y CN2149631Y CN 93208927 CN93208927U CN2149631Y CN 2149631 Y CN2149631 Y CN 2149631Y CN 93208927 CN93208927 CN 93208927 CN 93208927 U CN93208927 U CN 93208927U CN 2149631 Y CN2149631 Y CN 2149631Y
- Authority
- CN
- China
- Prior art keywords
- capacitance
- parallel
- voltage divider
- equivalent potential
- potential screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a precision voltage divider used for measuring the value of high voltage. The precision voltage divider is composed of capacitance resistant pieces connected in parallel, an equivalent potential screen capacitor, cables and an outer shell. The equivalent potential screen capacitor is winded at a periphery taking the central line of the capacitance resistant pieces connected in parallel as a shaft center. The capacitance resistant pieces connected in parallel and the equivalent potential screen capacitor are arranged in a spiral insulating tube after respectively connecting in series. The precision voltage divider has small size, beautiful appearance and light weight, and the precision voltage divider is suitable for precisely measuring the high-voltage values of alternating current and direct current on site.
Description
The accurate voltage divider of the utility model belongs to the voltage measurement field.
In order accurately to measure high-tension magnitude of voltage, accurate bleeder mechanism must be arranged.Exist the influence that is subjected to surrounding environment and high-pressure side wiring angle in original patented technology (patent No. 87214780.U), make the measurement result of high voltage magnitude of voltage produce certain error.
The purpose of this utility model is to overcome above-mentioned shortcoming, improves and measures high-tension degree of accuracy, reduces the influence of environment and stray capacitance.
The utility model is by capacitance-resistance part (K in parallel
1, K
2K
N), equivalent potential screen capacitor (C
1', C
2' ... C
N'), connect cable 2 and voltage divider shell composition between capacitance-resistance part in parallel and the low-voltage measuring instrument 1.R
1And C
1Parallel connection is K
1, R
2And C
2Parallel connection is K
2R
NAnd C
NParallel connection is K
N, by capacitance-resistance part K in parallel
1Constitute low-voltage arm, by capacitance-resistance part (K in parallel
2, K
3K
N) constituting high-voltage arm, N is the positive integer greater than 3.The shell of voltage divider is to be connected to form by grading ring 7, insulating cylinder 8 and metab 13.It is characterized in that equivalent potential screen capacitor (C
1', C
2' ... C
N') respectively corresponding to capacitance-resistance part (K in parallel
1, K
2K
N) center line be the periphery in axle center, connect by screened condenser series line 10 then, a end after the series connection is connected with detector 3, and other end b is connected on the earth terminal 4.This voltage divider structurally is the capacitance-resistance part (K in parallel that adopts a plurality of electric capacity shieldings
2, K
3K
N) series connection packs in the spiral insulating cylinder 9 in sealing reinstalls insulating cylinder 8, carries out once sealing again.Through screened condenser C
1' around capacitance-resistance part K in parallel
1The peripheral assembly that constitutes is contained in the metab of being made by aluminium alloy 13.
The utlity model has the precision height, moisture seal is good, the magnitude of voltage that makes measurement is accurately and reliably.This device is handsome in appearance, be placed in the aluminium alloy case, and is easy to carry and transport.Be suitable for the high-tension magnitude of voltage of in-site measurement alternating current-direct current.
Below in conjunction with drawings and Examples the utility model is further elaborated:
Description of drawings: Fig. 1 is circuit theory diagrams of the present utility model
Fig. 2 is a structural drawing of the present utility model
R wherein
1, R
2R
NBe resistor, C
1, C
2C
NBe capacitor, K
1, K
2K
NBe capacitance-resistance device in parallel, C
1', C
2' ... C
N' be the equivalent potential screen capacitor, the 1st, low-voltage measuring instrument, the 2nd, cable, the 3rd, end of probe, the 4th, earth terminal, the 5th, minute pressure side, the 6th, spherical binding post, the 7th, grading ring, the 8th, insulating cylinder, the 9th, the spiral insulation tube, the 10th, equivalent potential screen capacitors in series line, the 11st, capacitance-resistance part series line in parallel, the 12nd, ground connection binding post, the 13rd, metab, the 14th, cable socket.
Embodiment:
One group of capacitance-resistance part (K in parallel
1Or K
2Or K) be by a cylindrical resistor or four prism type resistor and one with this resistor be skeleton, the capacitor that is centered around this resistor periphery constitutes.Equivalent potential screen capacitor C
1', C
2' ... C
N' corresponding to respectively capacitance-resistance part in parallel periphery, and form as one.
This embodiment N=16, an end a is connected on end of probe 3 after 16 equivalent potential screen capacitors in series, on the other end b ground connection 4.16 capacitance-resistance part series connection in parallel also are connected on respectively on 3,4.Wherein constitute capacitor C
1The capacitance-resistance of ' shielding part K in parallel
1Assembly is contained in the metab 13, is contained in the spiral insulation tube 9 after capacitance-resistance part in parallel (high-voltage arm) series connection of other 15 groups of electric capacity shielding.The end of probe 3 and spherical binding post 6 and the grading ring 7 that are connected with high-voltage arm join, and the junction of high-voltage arm and low-voltage arm joins for the socket 14 of branch pressure side 5 with cable 2, and the other end of cable and low-voltage measuring instrument join.The other end ground connection 4 of low-voltage arm, earth terminal 4 joins with ground connection binding post 12.
Capacitance-resistance part K in parallel in this voltage divider
1R
1=0.15M Ω, C
1=1000000PF, capacitance-resistance part K in parallel
2, K
3K
16R
2=R
3=...=R
16=100M Ω, C
2=C
3=...=C
16=1500PF; Equivalent potential screen capacitor C
1'=60000PF, C
2'=C
3'=...=C
16'=90PF.Can measure DC0～140KV by the voltage divider that above-mentioned parameter constitutes, the magnitude of voltage of AC0～100KV.Intrinsic standoff ratio is 10000.
Claims (1)
1, a kind of high-voltage divider is by capacitance-resistance part (K in parallel
1, K
2K
N), equivalent potential screen capacitor (C
1', C
2' ... C
N'), the cable 2 and the shell that connect between capacitance-resistance part in parallel and the low-voltage measuring instrument 1 are formed, and it is characterized in that: equivalent potential screen capacitor (C
1', C
2' ... C
N') respectively corresponding to capacitance-resistance part (K in parallel
1, K
2K
N) center line be the periphery in axle center, an end a is connected on the end of probe 3 after connecting, other end b connects on the earth terminal 4; After connecting respectively, a plurality of equivalent potential screen capacitors and capacitance-resistance part in parallel packs in the spiral insulation tube 9, in sealing reinstalls insulating cylinder 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208927 CN2149631Y (en) | 1993-04-14 | 1993-04-14 | Precision voltage divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208927 CN2149631Y (en) | 1993-04-14 | 1993-04-14 | Precision voltage divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2149631Y true CN2149631Y (en) | 1993-12-15 |
Family
ID=33791263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93208927 Expired - Fee Related CN2149631Y (en) | 1993-04-14 | 1993-04-14 | Precision voltage divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2149631Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004212A (en) * | 2010-10-15 | 2011-04-06 | 中国电力科学研究院 | Equivalent load device of direct current converter valve multiple valve tests |
| CN111133320A (en) * | 2017-09-28 | 2020-05-08 | 3M创新有限公司 | Sensor with discrete impedance elements for high voltage connectors |
-
1993
- 1993-04-14 CN CN 93208927 patent/CN2149631Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004212A (en) * | 2010-10-15 | 2011-04-06 | 中国电力科学研究院 | Equivalent load device of direct current converter valve multiple valve tests |
| CN102004212B (en) * | 2010-10-15 | 2014-03-12 | 中国电力科学研究院 | Equivalent load device of direct current converter valve multiple valve tests |
| CN111133320A (en) * | 2017-09-28 | 2020-05-08 | 3M创新有限公司 | Sensor with discrete impedance elements for high voltage connectors |
| CN111133320B (en) * | 2017-09-28 | 2022-05-13 | 3M创新有限公司 | Sensor with discrete impedance elements for high voltage connectors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Dong Mei Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |