CN2758779Y - Multipurpose capacitance electric bridge - Google Patents
Multipurpose capacitance electric bridge Download PDFInfo
- Publication number
- CN2758779Y CN2758779Y CN 200420017291 CN200420017291U CN2758779Y CN 2758779 Y CN2758779 Y CN 2758779Y CN 200420017291 CN200420017291 CN 200420017291 CN 200420017291 U CN200420017291 U CN 200420017291U CN 2758779 Y CN2758779 Y CN 2758779Y
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- CN
- China
- Prior art keywords
- capacitor
- measuring
- capacitance
- signal
- current sensor
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- Expired - Fee Related
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Abstract
The utility model relates to a multipurpose capacitance electric bridge, which can measure the capacitance of a capacitor bank or a capacitor unit without disassembling a connecting wire of the capacitor bank or the capacitor unit. Voltage is provided for a capacitor to be measured and a reference capacitor in the instrument, a current signal on the capacitor to be measured can be obtained by a forcipated current sensor, the current signal of the reference capacitor can be obtained by a standard capacitor current sensor, and the two signals are sampled synchronously and are conveyed into a measuring signal processor to be under comparison and calculation to obtain the capacitance of the capacitor to be measured, and then are displayed on a displayer. Because the current signal on the capacitor to be measured is obtained on a forcipated sleeve tube or a lead wire on the forcipated current sensor, the connecting wire of the capacitor does not need disassembling or assembling in the process of measuring, huge labor intensity and workload brought by disassembling and assembling the connecting wire of the capacitor can be avoided, and simultaneously the capacitor can avoid being damaged.
Description
Technical field
The utility model relates to a kind of measurement mechanism that is used for Measurement of capacitor group and capacitor unit electric capacity thereof, especially can not tear capacitor group connecting line open and just can carry out a kind of multi-usage capacitance bridge that big small current measurement was measured and be can be used for to capacitor group and capacitor unit electric capacity thereof.
Background technology
At present, the measurement of well-known capacitor group electric capacity is to adopt capacitance meter or capacitance bridge, in measurement, all capacitor group connecting line must be taken apart, with the capacitor table, or capacitance bridge is in parallel with capacitor or be connected in series, when surveying the capacitor unit electric capacity of capacitor group, just bother more, usually will put in order the group connecting line and take apart, taking out this unit measures, cause the surveying work amount huge like this, and since the capacitor long-time running, the screw easy-to-rust, bite, it is normal like this that to cause tearing open the capacitor line very difficult, firmly very huge, and the sleeve pipe of fragile capacitor causes the capacitor leakage of oil to damage, therefore, along with capacity of capacitor bank is increasing, the connection in series-parallel capacitor unit is more and more, adopts this method to carry out capacitor and measures more and more difficult.
Summary of the invention
In order to overcome the deficiency of existing capacitance meter or capacitance bridge Measurement of capacitor and capacitor unit electric capacity thereof, the utility model provides a kind of capacitance bridge, when this capacitance bridge Measurement of capacitor group electric capacity and capacitor unit electric capacity thereof, do not need the dismounting connecting line, but also can be used for little electric current, the measurement of big electric current is used, significantly reduced the surveying work amount of capacitor group electric capacity like this, and can not damage capacitor, can be used for large and small current measurement simultaneously, and make the instrument a tractor serves several purposes.
The technical scheme that its technical matters that solves the utility model adopts is: the multi-usage capacitance bridge, power supply is through supply socket, the control power transformer, the control power supply is linked in sequence with measuring-signal processor and display, the output terminal of power transformer is connected with the two ends of standard capacitor, and simultaneously after tested pressure-wire be connected with the two ends of power folder with testing capacitor group or its capacitor unit, but pincers are with the pincerlike current signal sensor of jaw folding on testing capacitor group or its capacitor unit lead-in wire or the sleeve pipe, the signal output part of pincerlike current signal sensor and the signal output part of standard capacitor current sensor are connected with the input end of the measuring-signal processor with comparison computing function respectively, and the output terminal of measuring-signal processor connects display.
The beneficial effects of the utility model are that when quick, safety were finished capacitor group and the measurement of capacitor unit electric capacity thereof, the capacitor of also having avoided causing because of the dismounting connecting line damaged.Thereby reach quick, safety, purpose efficiently, have good economic benefit and social benefit.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the external structure of multi-usage capacitance bridge first embodiment.
Fig. 3 is the external structure of multi-usage capacitance bridge second embodiment.
1. supply sockets, 2. power switch K among the figure
13. control power transformer T
24. control power supply
5. measuring-signal processor 6. displays 7. test voltage lines 8. power transformer T
1
9. power folder 10. testing capacitor groups or capacitor unit 11. test current signals lines
12. pincerlike current sensor 13. Test Switchboard K
214. standard capacitance
15. standard capacitance current sensor 16. connection terminals 17. signal plugs 18. are measured
Embodiment
The socket 1 that in Fig. 1, power lead plugged in, the power turn-on K switch
12, give control power transformer T
23 power supplies, control power transformer 3 makes measuring-signal processor 5 and display 6 etc. in running order to 4 power supplies of control power supply, and test voltage line 7 is connected to power transformer T
1On 8 the connection terminal 16, power folder 9 is sandwiched in the two ends of capacitor group to be tested or capacitor unit 10, test current signals line 11 is inserted on the input terminal signal plug 17 of measuring-signal processor 5, but pincerlike current sensor 12 jaws of jaw folding are opened on the connecting line or sleeve pipe that is placed in testing capacitor 10, and Test Switchboard K then closes
213, power supply is through power transformer T
18 pay standard capacitors 14 and testing capacitor C
X10 power supplys, at this moment the current signal that is produced respectively through standard capacitance current sensor 15 and pincerlike current sensor 12 send into processor 5 carry out amplification ratio, calculate, because testing capacitor 10 applies same voltage with standard capacitor 14, current signal adopts synchronized sampling, and avoided voltage, frequency etc. to change adverse effect to measuring, therefore, it is accurate, stable to measure, and then its result is sent display 6 to show, promptly finished the measuring process of its electric capacity.
In embodiment illustrated in fig. 2, power supply inserts socket 1 through power lead and enters electric bridge, power switch 2 is put closing position after, the control power supply 4 of instrument internal, measuring-signal processor 5 and display 6 are in running order.Test voltage line 7 and power folder 9 are received on the connection terminal 16, test current signals line 11 and pincerlike current sensor 12 are inserted signal plug 17, ground wire is connected to ground terminal 19, then power folder 9 is sandwiched in the two poles of the earth of testing capacitor group or capacitor unit 10, pincerlike current sensor 12 is placed on the line or sleeve pipe of capacitor group to be tested or capacitor unit 10, Test Switchboard K
213 put the closing position, and display 6 shows the electric capacity of surveying, and measurement is finished.After measurement is finished, with Test Switchboard K
213 put sub-gate position, pincerlike current sensor 12 are placed on the connecting line or sleeve pipe of next capacitor group to be tested or capacitor unit 10, can carry out next step measurement.
In the embodiment shown in fig. 3, power supply inserts socket 1 through power lead and enters electric bridge, with power switch K
12 put closing position after, power light 20 is bright, the control power supply 4 of instrument internal is described, measuring-signal processor 5 and display 6 place's duties, testing power supply line 7 and power folder 9 are received on the connection terminal 16, test current signals line 11 and pincerlike current sensor 12 are inserted signal plug 17, ground wire is connected to ground terminal 19, then power folder 9 is sandwiched in the two poles of the earth of testing capacitor group or capacitor unit 10, pincerlike current sensor 12 is placed on the line or sleeve pipe of testing capacitor group or capacitor unit 10, Test Switchboard K
213 put the closing position, and test pilot lamp 21 is bright, adjust and measure driving switch 18 in correct position, and display 6 shows the electric capacity of surveying, and measurement is finished.After measurement is finished, with Test Switchboard K
213 put sub-gate position, pincerlike current sensor 12 are placed on the connecting line or sleeve pipe of next testing capacitor group or capacitor unit 10, can carry out next step measurement.
Claims (1)
1, a kind of multi-usage capacitance bridge, power supply is through supply socket, the control power transformer, the control power supply is linked in sequence with measuring-signal processor and display, it is characterized in that, the output terminal of power transformer is connected with the two ends of standard capacitor, and simultaneously after tested pressure-wire be connected with the two ends of power folder with testing capacitor group or its capacitor unit, but pincers are with the pincerlike current signal sensor of jaw folding on testing capacitor group or its capacitor unit lead-in wire or the sleeve pipe, the signal output part of pincerlike current signal sensor and the signal output part of standard capacitor current sensor are connected with the input end of the measuring-signal processor with comparison computing function respectively, and the output terminal of measuring-signal processor connects display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017291 CN2758779Y (en) | 2004-03-01 | 2004-03-01 | Multipurpose capacitance electric bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017291 CN2758779Y (en) | 2004-03-01 | 2004-03-01 | Multipurpose capacitance electric bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758779Y true CN2758779Y (en) | 2006-02-15 |
Family
ID=36078921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017291 Expired - Fee Related CN2758779Y (en) | 2004-03-01 | 2004-03-01 | Multipurpose capacitance electric bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758779Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203594A (en) * | 2008-10-16 | 2011-09-28 | 乌斯特技术股份公司 | Capacitive measuring circuit for yarn inspection |
| CN103777057A (en) * | 2012-10-17 | 2014-05-07 | 天津市电力公司 | True-root-mean-square capacitive current tester |
-
2004
- 2004-03-01 CN CN 200420017291 patent/CN2758779Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203594A (en) * | 2008-10-16 | 2011-09-28 | 乌斯特技术股份公司 | Capacitive measuring circuit for yarn inspection |
| CN102203594B (en) * | 2008-10-16 | 2014-10-22 | 乌斯特技术股份公司 | Capacitive measuring circuit for yarn inspection |
| CN103777057A (en) * | 2012-10-17 | 2014-05-07 | 天津市电力公司 | True-root-mean-square capacitive current tester |
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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: Jiang Yingmin Document name: Notification of Termination of Patent Right |
|
| 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 |