CN2321011Y - Electric network earth capacitance current measuring apparatus - Google Patents
Electric network earth capacitance current measuring apparatus Download PDFInfo
- Publication number
- CN2321011Y CN2321011Y CN 98208554 CN98208554U CN2321011Y CN 2321011 Y CN2321011 Y CN 2321011Y CN 98208554 CN98208554 CN 98208554 CN 98208554 U CN98208554 U CN 98208554U CN 2321011 Y CN2321011 Y CN 2321011Y
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- Prior art keywords
- circuit
- capacitor
- transformer circuit
- utility
- model
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- 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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Abstract
The utility model relates to an electric network earth capacitance current measuring apparatus. The utility model is composed of an additional capacitive circuit, a current mutual inductor circuit, a voltage mutual inductor circuit and a computing display circuit. The utility model has the advantages of novel design, simple circuit and convenient measurement. When the utility model is used, the capacitance current between an electric network and the earth can be directly displayed. The utility model solve the problem which is needed to be solved in a long term and is not solved by people. The utility model is an ideal electric network earth capacitance current measuring apparatus.
Description
The utility model relates to a kind of current measurement instrument, particularly a kind of power-to-ground capacitance current measuring instrument.
Though at present various current measuring instruments are arranged, also do not have a kind of surveying instrument of power-to-ground capacitance electric current.
The purpose of this utility model is to provide a kind of power-to-ground capacitance current measuring instrument, in order to be convenient for measuring the power-to-ground capacitance electric current, to overcome and now can not measure the scarce limit of electrical network to capacitance current with current measuring instrument.
The purpose of this utility model can reach by following embodiment:
The utility model is by the additional capacitor circuit, and current transformer circuit, voltage transformer circuit and calculating display circuit are formed, and on the additional capacitor circuit capacitor C are arranged
a, capacitor C
b, capacitor C
cAnd capacitor C
f, capacitor C
a, capacitor C
b, capacitor C
c, head end by measuring lead wire respectively with electrical network A, B, C is three-way is connected, tail end connects the back altogether and is connected with the former sideline of voltage transformer circuit road; Capacitor C
fHead end connects capacitor C
cHead end, its tail end connect the former limit of current transformer circuit circuit; Voltage transformer circuit summation current transformer circuit is an available circuit, voltage transformer circuit summation current transformer circuit former limit tail end also connects back ground connection, voltage transformer circuit summation current transformer circuit is paid the limit initial and end and all is connected with the calculating display circuit, and calculating display circuit is that commercially available one-chip computer or other integrated package calculate display circuit.
Advantage of the present utility model is that circuit is simple, modern design, it is convenient to measure, and can directly show the power-to-ground capacitance electric current, having solved that people want to solve for a long time and the problem that is convenient for measuring the power-to-ground capacitance electric current that do not have to solve, is a kind of surveying instrument of desirable power-to-ground capacitance electric current.
Below in conjunction with accompanying drawing the utility model is elaborated further.
Fig. 1 is an electrical schematic diagram of the present utility model.
As shown in Figure 1, this measuring instrument is made up of additional capacitor circuit (1), current transformer circuit (2), voltage transformer circuit (3) and calculating display circuit (4).The additional capacitor circuit has capacitor C on (1)
a, capacitor C
b, capacitor C
cAnd capacitor C
f, capacitor C
a, capacitor C
b, capacitor C
cHead end by measuring lead wire respectively with electrical network A, B, C is three-way is connected, tail end connects the back altogether and is connected with the former limit of voltage transformer circuit (3) head end circuit; Capacitor C
fHead end connects capacitor C
cHead end, its tail end connect the former limit of current transformer circuit (2) circuit; Voltage transformer circuit (3) summation current transformer circuit (2) is an available circuit, voltage transformer circuit (3) summation current transformer circuit (2) former limit tail end also connects back ground connection, voltage transformer circuit (3) summation current transformer circuit (2) is paid the limit head and the tail and all is connected with calculating display circuit (4), and calculating display circuit is that commercially available one-chip computer or other integrated package calculate display circuit.
Claims (2)
1, a kind of power-to-ground capacitance current measuring instrument is made up of additional capacitor circuit (1), current transformer circuit (2), voltage transformer circuit (3) and calculating display circuit (4), it is characterized in that on the additional capacitor circuit (1) capacitor C being arranged
a, capacitor C
b, capacitor C
cAnd capacitor C
f, capacitor C
a, capacitor C
b, capacitor C
cHead end by measuring lead wire respectively with electrical network A, B, C is three-way is connected, tail end connects the back altogether and is connected with the former sideline of voltage transformer circuit road; Capacitor C
fHead end connects capacitor C
cHead end, its tail end connect the former limit of current transformer circuit (2) circuit; Voltage transformer circuit (3) summation current transformer circuit (2) former limit tail end also connects back ground connection, and voltage transformer circuit (3) summation current transformer circuit (2) is paid the limit initial and end and all is connected with calculating display circuit (4).
2, measuring instrument according to claim 1 is characterized in that calculating display circuit (4) and is commercially available one-chip computer or other integrated package calculating display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98208554 CN2321011Y (en) | 1998-03-25 | 1998-03-25 | Electric network earth capacitance current measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98208554 CN2321011Y (en) | 1998-03-25 | 1998-03-25 | Electric network earth capacitance current measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321011Y true CN2321011Y (en) | 1999-05-26 |
Family
ID=33964247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98208554 Expired - Fee Related CN2321011Y (en) | 1998-03-25 | 1998-03-25 | Electric network earth capacitance current measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321011Y (en) |
-
1998
- 1998-03-25 CN CN 98208554 patent/CN2321011Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |