CN1963540A - Non-contact electronic voltage measuring apparatus without mutual-inductor - Google Patents
Non-contact electronic voltage measuring apparatus without mutual-inductor Download PDFInfo
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- CN1963540A CN1963540A CN 200610135282 CN200610135282A CN1963540A CN 1963540 A CN1963540 A CN 1963540A CN 200610135282 CN200610135282 CN 200610135282 CN 200610135282 A CN200610135282 A CN 200610135282A CN 1963540 A CN1963540 A CN 1963540A
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- measuring apparatus
- voltage measuring
- mutual inductor
- electronic voltage
- insulation course
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Abstract
This invention discloses one non-contact mutual inductance electron voltage measurement device in work frequency voltage measurement device, wherein, the measurement router is set with limit fix points isolated by conductive metal bar sample; the wires outside is added with insulation layer added with metal thin board shield shell; then adding insulation layer on shell of shield shell; the other end of conductive metal bard sample device is connected to cable inner core; the two ends of cable is tightened by screw with other end connected to electron circuit device.
Description
Technical field
The present invention relates to the measuring equipment of power frequency (interchange) voltage, is the electronic voltage measuring apparatus that a kind of non-contact does not have mutual inductor specifically.
Background technology
At present, people carry out metallic connection or contact to measurement instrument with measured circuit in measuring voltage.Measuring high-tension the time, except carrying out above-mentioned connection or contact, also to consider the electric insulation condition and high and low voltage isolation is come, and make it to be for conversion into proportional low-voltage gas signal by voltage transformer (VT), measure again.Even if unconventional electronic type voltage transformer in use, also still to carry out metallic connection with test line.Like this, along with the rising of electric pressure, the insulating requirements of voltage transformer (VT) just must improve, the corresponding increase of overall dimensions, and cost certainly will rise, and the price eighteenth of the twenty is expensive.Concerning traditional electromagnetic potential transformer, also exist anti-electromagnetic interference capability poor, measuring accuracy is low, and responding range is narrow, problems such as easily saturated and ferroresonance.And, in case above-mentioned mutual inductor all exists mutual inductor to break down, the shortcoming of just necessary interruption maintenance.
Exist alternating electromagnetic field around electrified body, electrified body itself is exactly an electromagnetic radiation source in other words.The magnitude of voltage of the electromagnetic field of its radiation or electromagnetic power and electrified body has proportionate relationship.The present invention is devoted to the research of this relation, the electronic voltage measuring apparatus that the non-contact that provides does not have a mutual inductor is exactly the electromagnetic wave by electrified body is given off, point of fixity in restriction receives, handles and measure electromagnetic wave power, size, thereby obtain the relevant voltage value that this electrified body has, just measured the voltage on the circuit to be measured in other words.
Show from the interrelated data retrieval that comprises Chinese patent, have not yet to see the relevant report of electronic voltage measuring apparatus that non-contact does not have mutual inductor.
Summary of the invention
In order to overcome the deficiencies in the prior art, the objective of the invention is to provide a kind of non-contact that the alternating electromagnetic field or the electromagnetic wave signal that exist around the electrified body are received, handle and measure not have the electronic voltage measuring apparatus of mutual inductor.
The technical solution adopted for the present invention to solve the technical problems is: a kind of non-contact does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: the point of fixity that restriction is set on measured line wire carries out receiving electromagnetic signals, point of fixity and conducting metal bar sampling thief are that the non-contact that insulation course is isolated is installed, non-contact is installed and must be met existing national electrical safety criterion distance, and described point of fixity is measured line wire side and inserts two kinds in a terminal lead on measured circuit; The skin of lead adds (being inserted in) insulation course, and at skin adding (being inserted in) sheet metal shielding case of insulation course, the appearance adding (being inserted in) at shielding case adds insulation course again; The conducting metal bar sampling thief other end is connected with the inner core of shielded cable, and two ends of cable are fastening by nut, the necessary ground connection of the screen layer of cable and sheet metal shielding case, and the other end of the inner core of cable is connected to electronic circuit device; The necessary ground connection of the screen layer of described shielding case and shielded cable; The outside of electronic circuit device is a metal shell, and metal shell must ground connection.
The invention has the beneficial effects as follows: the present invention is except possessing most of advantage that electronic type voltage transformer is arranged, this device need not carry out metallic connection or contact with measured circuit, also need not mutual inductor can be converting simulating signal to the proportional electromagnetic signal of measured line voltage distribution, convert digital signal again to and show, also can pass to continue insurance system or phase amount measurement receiving system with the form of electric signal or light signal.This apparatus structure is simple, and volume is little, and is in light weight, cost is low, and safe, no magnetic saturation and ferroresonance, measurement range is wide, and the degree of accuracy height does not burn, do not explode, need not interruption maintenance, can be widely used in the voltage measurement of mesohigh electric system, especially be used in the GIS combined electrical apparatus, in watch-dog and the switch-board cabinet, will reduce space, volume and cost investment widely.Therefore, the present invention can accomplish the end in view.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is a penetration type voltage measuring apparatus view of the present invention.
Fig. 2 is a terminal type voltage measuring apparatus view of the present invention.
Fig. 3 is the signal processor circuit figure of application of known of the present invention.
Fig. 4 is the analog to digital converter and the nixie display circuit diagram of application of known of the present invention.
Insulation course 1 among the figure, and shielding case 2 adds insulation course 3, lead 4, sampling thief 5, nut 6, shielded cable 7, inner core 8, nut 9, electronic circuit device 10, shell 11.
Embodiment
Embodiment 1:
See also Fig. 1 and Fig. 3, Fig. 4, present embodiment is the penetration type voltage measuring apparatus, skin at measured line wire 4 adds (being inserted in) insulation course 1, skin at insulation course 1 adds (being inserted in) sheet metal shielding case 2, appearance adding (being inserted in) at shielding case 2 adds insulation course 3 again, offer a boss space in the centre of sheet metal shielding case 2, conducting metal bar sampling thief 5 is fixed in the middle of the boss, sampling thief 5 also is connected with the inner core 8 of cable 7, two ends of cable 7 are fastening by nut 6 and 9, and the other end of the inner core 8 of cable 7 is connected to electronic circuit device 10.Described shielding case 2 and the necessary ground connection of the screen layer of shielded cable 7; The outside of electronic circuit device 10 is a metal shell 11, and metal shell 11 must ground connection.
Embodiment 2:
See also Fig. 2 and Fig. 3, Fig. 4, present embodiment is the terminal type voltage measuring apparatus, on measured circuit, insert a terminal lead 4, lead is parallel non-contact state with conducting metal bar sampling thief 5, their skin all adds (being inserted in) insulation course 1, skin at insulation course 1 adds (being inserted in) sheet metal shielding case 2, appearance adding (being inserted in) at shielding case 2 adds insulation course 3 again, conducting metal bar sampling thief 5 other ends are connected with the inner core 8 of cable 7, two ends of cable 7 are fastening by nut 6 and 9, and the other end of the inner core 8 of cable 7 is connected to electronic circuit device 10.Described shielding case 2 and the necessary ground connection of the screen layer of shielded cable 7; The outside of electronic circuit device 10 is a metal shell 11, and metal shell must ground connection.
Claims (6)
1, a kind of non-contact does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: on measured line wire, point of fixity is set, point of fixity and conducting metal bar sampling thief are that insulation course is isolated, the skin of lead adds insulation course, skin at insulation course adds the sheet metal shielding case, and the appearance adding at shielding case adds insulation course again; The conducting metal bar sampling thief other end is connected with the inner core of shielded cable, and two ends of shielded cable are fastening by nut, and the other end of the inner core of cable is connected to electronic circuit device.
2, a kind of non-contact according to claim 1 does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: described point of fixity is measured line wire side and inserts two kinds in a terminal lead on measured circuit.
3, a kind of non-contact according to claim 1 does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: the outside of described electronic circuit device is a metal shell.
4, a kind of non-contact according to claim 1 does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: the screen layer of described shielded cable must ground connection.
5, a kind of non-contact according to claim 1 does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: described metal shell must ground connection.
6, a kind of non-contact according to claim 1 does not have the electronic voltage measuring apparatus of mutual inductor, it is characterized in that: described sheet metal shielding case must ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610135282 CN1963540A (en) | 2006-12-05 | 2006-12-05 | Non-contact electronic voltage measuring apparatus without mutual-inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610135282 CN1963540A (en) | 2006-12-05 | 2006-12-05 | Non-contact electronic voltage measuring apparatus without mutual-inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1963540A true CN1963540A (en) | 2007-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610135282 Pending CN1963540A (en) | 2006-12-05 | 2006-12-05 | Non-contact electronic voltage measuring apparatus without mutual-inductor |
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| Country | Link |
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| CN (1) | CN1963540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636689A (en) * | 2012-05-09 | 2012-08-15 | 中国人民解放军重庆通信学院 | Non-contact power voltage measuring method |
-
2006
- 2006-12-05 CN CN 200610135282 patent/CN1963540A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636689A (en) * | 2012-05-09 | 2012-08-15 | 中国人民解放军重庆通信学院 | Non-contact power voltage measuring method |
| CN102636689B (en) * | 2012-05-09 | 2014-07-02 | 中国人民解放军重庆通信学院 | Non-contact power voltage measuring method |
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Open date: 20070516 |