CN204028204U - A kind of Rogowski coil current sensor with high-power output interface - Google Patents
A kind of Rogowski coil current sensor with high-power output interface Download PDFInfo
- Publication number
- CN204028204U CN204028204U CN201420457927.3U CN201420457927U CN204028204U CN 204028204 U CN204028204 U CN 204028204U CN 201420457927 U CN201420457927 U CN 201420457927U CN 204028204 U CN204028204 U CN 204028204U
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- China
- Prior art keywords
- coil
- amplification circuit
- current sensor
- output interface
- power output
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Abstract
The utility model discloses a kind of Rogowski coil current sensor with high-power output interface, comprise the coil of uniform winding on nonferromugnetic material, two output terminals of described coil are connected with IC integrating amplification circuit, and described IC integrating amplification circuit is connected with monolithic integrated power amplifier.The induced voltage of Luo-coil can be changed, zoom into analog current signal by the utility model; have that precision is high, the linearity good, structure is simple, service-strong feature; exportable 0 ~ 1A analog current signal, meets the request for utilization of conventional measure and control instrument and protective relaying device.
Description
Technical field
The utility model relates to Rogowski coil current sensor.
Background technology
Luo-coil is the toroid winding of a kind of uniform winding on nonferromugnetic material, there is high precision, the good linearity and the advantage such as unsaturated, show wide application prospect in field of current measurement, be especially widely used especially in the measurement of power frequency heavy-current and pulse current.But the Rogowski coil current sensor developed at present is all analog voltage or the digital pulse signal of 0 ~ 4V; this is a kind of low-power output signal; and the measure and control instrument that industry spot uses in a large number and the signal that protective relaying device accepts are the analog current signal of 1A or 5A, limit the application of this sensor.
Summary of the invention
Technical problem to be solved in the utility model is; not enough for prior art; there is provided a kind of Rogowski coil current sensor with high-power output interface, exportable 0 ~ 1A analog current signal, meets the request for utilization of conventional measure and control instrument and protective relaying device.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of Rogowski coil current sensor with high-power output interface, comprise the coil of uniform winding on nonferromugnetic material, two output terminals of described coil are connected with IC integrating amplification circuit, and described IC integrating amplification circuit is connected with monolithic integrated power amplifier.
Described IC integrating amplification circuit comprises the integrating circuit, see-saw circuit, the in-phase amplification circuit that connect successively.
Compared with prior art; the beneficial effect that the utility model has is: the induced voltage of Luo-coil can be changed, zoom into analog current signal by the utility model; have that precision is high, the linearity good, structure is simple, service-strong feature; exportable 0 ~ 1A analog current signal, meets the request for utilization of conventional measure and control instrument and protective relaying device.
Accompanying drawing explanation
Fig. 1 is the utility model one example structure block diagram;
Fig. 2 is the utility model one example I C integrating amplification circuit schematic diagram.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises the coil 1 of uniform winding on nonferromugnetic material, and two output terminals of described coil 1 are connected with IC integrating amplification circuit 2, and described IC integrating amplification circuit 2 is connected with monolithic integrated power amplifier 3; IC integrating amplification circuit comprises the integrating circuit, see-saw circuit, the in-phase amplification circuit that connect successively as shown in Figure 2.
Tested current i
xinduced voltage e is transformed to through coil 1
(t), amplified by the IC integrating amplification circuit 2 being connected to the output terminal of Luo-coil, be sent to OPA548 monolithic integrated power amplifier 3, finally obtain output current i
0.
Claims (2)
1. the Rogowski coil current sensor with high-power output interface, comprise the coil of uniform winding on nonferromugnetic material (1), it is characterized in that, two output terminals of described coil (1) are connected with IC integrating amplification circuit (2), and described IC integrating amplification circuit (2) is connected with monolithic integrated power amplifier (3).
2. the Rogowski coil current sensor with high-power output interface according to claim 1, is characterized in that, described IC integrating amplification circuit comprises the integrating circuit, see-saw circuit, the in-phase amplification circuit that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457927.3U CN204028204U (en) | 2014-08-14 | 2014-08-14 | A kind of Rogowski coil current sensor with high-power output interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420457927.3U CN204028204U (en) | 2014-08-14 | 2014-08-14 | A kind of Rogowski coil current sensor with high-power output interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028204U true CN204028204U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420457927.3U Expired - Fee Related CN204028204U (en) | 2014-08-14 | 2014-08-14 | A kind of Rogowski coil current sensor with high-power output interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028204U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849626A (en) * | 2015-04-10 | 2015-08-19 | 北京兴迪仪器有限责任公司 | Power-frequency signal acquiring device for high-voltage power equipment |
| CN105277845A (en) * | 2015-09-24 | 2016-01-27 | 武汉三新电力设备制造有限公司 | Generator stator winding earth fault exact location instrument |
| CN105738745A (en) * | 2016-04-25 | 2016-07-06 | 广东电网有限责任公司佛山供电局 | Power transmission line state monitoring system and monitoring method thereof |
-
2014
- 2014-08-14 CN CN201420457927.3U patent/CN204028204U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849626A (en) * | 2015-04-10 | 2015-08-19 | 北京兴迪仪器有限责任公司 | Power-frequency signal acquiring device for high-voltage power equipment |
| CN105277845A (en) * | 2015-09-24 | 2016-01-27 | 武汉三新电力设备制造有限公司 | Generator stator winding earth fault exact location instrument |
| CN105738745A (en) * | 2016-04-25 | 2016-07-06 | 广东电网有限责任公司佛山供电局 | Power transmission line state monitoring system and monitoring method thereof |
| CN105738745B (en) * | 2016-04-25 | 2019-01-29 | 广东电网有限责任公司佛山供电局 | Power transmission state monitoring system and its monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20210814 |