CN213813746U - Residual current protection and data output circuit - Google Patents
Residual current protection and data output circuit Download PDFInfo
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- CN213813746U CN213813746U CN202022112484.2U CN202022112484U CN213813746U CN 213813746 U CN213813746 U CN 213813746U CN 202022112484 U CN202022112484 U CN 202022112484U CN 213813746 U CN213813746 U CN 213813746U
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Abstract
The patent of the utility model provides a residual current protection and data output circuit, include: the zero sequence current transformer is arranged in a detection loop and used for detecting residual current, the output end of the zero sequence current transformer is connected to the input end of the current controller and the data output terminal or connected to the data output terminal through the current controller, the switch action mechanism is connected to the output end of the controller, and the control output end of the controller drives the switch action mechanism through the release. The utility model discloses residual current protection and data output circuit supply monitoring and data analysis with residual current signal transmission to residual current monitoring system through residual current data output terminal. And the residual current protector in a fault and failure state is found in time, so that accidents such as electric shock, electric fire and the like are effectively prevented.
Description
Technical Field
The utility model relates to a building electrician technical field especially relates to a residual current protection and data output circuit.
Background
In the building construction industry, in order to guarantee the construction power consumption safety of construction engineering, a residual current protector (hereinafter referred to as RCD) is required to be arranged on a distribution box. However, the residual current protector interrupts the power supply to the protected circuit only when the leakage current from the protected circuit to the ground or the leakage current from the protection conductor reaches a set value of the operating current of the switching mechanism. In recent years, with the increase of power consumption safety awareness, an electrical safety accident has been caused by a leakage current value exceeding a rated operating current value due to RCD failure. For this reason, the leakage current value needs to be measured in real time.
In the current measuring method, measured conductors such as wires, cables, busbars and the like penetrate through a zero sequence current transformer independently arranged outside other electrical elements. This working method has the disadvantages of large occupied space and high cost.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide one kind to the above-mentioned shortcoming the utility model discloses residual current protection and data output circuit can have residual current data parameter output function under the prerequisite of ensureing personal safety.
The utility model provides a residual current protection and data output circuit, include: the zero sequence current transformer is arranged in a detection loop and used for detecting residual current, the output end of the zero sequence current transformer is connected to the input end of the current controller and the data output terminal or connected to the data output terminal through the current controller, the switch action mechanism is connected to the output end of the controller, and the control output end of the controller drives the switch action mechanism through the release.
Further, in the residual current protection and data output circuit, the zero sequence current transformer may be one zero sequence transformer with one or more sets of coils, or multiple zero sequence current transformers in the detection loop.
Further, in the residual current protection and data output circuit, the data output terminal is connected to the output end of the zero sequence current transformer through a current data amplifying circuit.
Further, in the residual current protection and data output circuit, the switch operating mechanism is a circuit breaker, one end of the release is connected to the control output end of the controller, and the other end of the release is connected to the switch operating mechanism.
Further, in the residual current protection and data output circuit, the controller is a single chip.
Further, in the residual current protection and data output circuit, the controller is further connected with a display for displaying the residual current value.
Further, in the above-mentioned residual current protection and data output circuit, the controller is further connected with a memory for storing residual current value data.
The utility model discloses residual current protection and data output circuit will be used for measuring the zero sequence current transformer setting of residual current in electrical element or with a zero sequence current transformer of residual current protection circuit sharing to pass through data output terminal with the residual current signal and export, thereby avoid because of independently setting up the produced mutual-inductor occupation space of zero sequence current transformer, install complicated, with high costs scheduling problem.
Drawings
Fig. 1 is a schematic structural diagram of the residual current data output circuit of the present invention in which a group of coil output ends of the zero sequence current transformer are commonly connected to the input end of the controller and the data output terminal;
fig. 2 is a schematic structural diagram of the residual current data output circuit of the present invention in which different output ends of multiple groups of coils of the zero sequence current transformer are respectively connected to the input end of the controller and the data output terminal;
fig. 3 is a schematic structural diagram of the output ends of a plurality of current transformers of the zero sequence current transformer of the residual current data output circuit of the present invention respectively connected to the input end of the controller and the data output terminal;
fig. 4 is the schematic structural diagram of the output terminal of the residual current data output circuit of the present invention connected to the output terminal of the zero sequence current transformer through the controller.
Detailed Description
Referring to fig. 1, 2, 3 and 4, the present invention provides a residual current data output circuit, which includes: the automatic residual current detection device comprises a controller 1, a zero sequence current transformer 2, a zero sequence current transformer sensor No. 13, a switch action mechanism 4, a release 5, a residual current data output terminal 10 and a zero sequence current transformer sensor No. 2 13, wherein the zero sequence current transformer 2 is arranged in a detection loop 20 and used for detecting residual current, and the output end of the zero sequence current transformer 2 is connected with the residual current data output terminal 10 or connected with the residual current data output terminal 10 through the controller 1 or connected with the residual current data output terminal 10 through a data amplification circuit.
The zero sequence current transformer 2 is disposed in the detection circuit 20, and is configured to detect a component dc component current value of a residual current, a frequency of an ac component, and a current value thereof.
The controller 1 controls the operation of the switch operation mechanism 4 based on the remaining current value.
The controller 1 is also connected with a display 6 for displaying the residual current value; the controller 1 is further connected with a memory 7 for storing residual current value data.
The switch action mechanism 4 is a circuit breaker, one end of the tripper 5 is connected with the control output end of the controller 1, the other end of the tripper 5 is connected with the switch action mechanism 4 and used for releasing the holding mechanism and enabling the switch action mechanism 4 to be automatically disconnected, and under the condition that electric leakage is judged, the power supply is rapidly cut off through the tripper 5, so that electric shock and electric leakage protection effects are achieved.
The controller 1 and the switch action mechanism 4 are further connected with a direct current voltage stabilizing module 8 and a bridge rectifier module 9, so that the stability of the control circuit is further improved.
The controller 1 is also connected with an indicator light 11 and a test button 12.
The utility model discloses residual current protection and data output circuit's theory of operation as follows:
and detecting the residual current through the zero sequence current transformer 2, and outputting a residual current signal to a residual current monitoring system through a residual current data output terminal 10 when the residual current occurs in the detection circuit 20. When the residual current value reaches the set residual current early warning value, the monitoring system performs early warning, so that accidents such as electric shock and electric fire caused by electric leakage under the condition that the residual current protector fails are avoided.
To sum up, the utility model discloses residual current protection and data output circuit monitor residual current signal output to residual current monitoring system through residual current data output terminal to provide residual current data and supply the analysis use, in time discover the residual current protector that became invalid, thereby avoid taking place accidents such as electric shock and electric fire because of the electric leakage under the condition that residual current protector became invalid.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A residual current protection and data output circuit, comprising: the zero sequence current transformer is arranged in a detection loop and used for detecting residual current, the output end of the zero sequence current transformer is connected to the input end of the current controller and the data output terminal or connected to the data output terminal through the current controller, the switch action mechanism is connected to the output end of the controller, and the control output end of the controller drives the switch action mechanism through the release.
2. The residual current protection and data output circuit according to claim 1, wherein the zero sequence current transformer is configured to have one or more coils on one current transformer or a plurality of current transformers on the detection loop.
3. The residual current protection and data output circuit according to claim 1, wherein the data output terminal is disposed on a surface of a protective case of the residual current protection and data output circuit.
4. The residual current protection and data output circuit according to claim 1, wherein the data output terminal is suspended outside a protective housing of the residual current protection and data output circuit.
5. The residual current protection and data output circuit according to claim 1, wherein the data output terminal is connected to the output terminal of the zero sequence current transformer via a wire.
6. The residual current protection and data output circuit according to claim 1, wherein the data output terminal is connected to the output end of the zero sequence current transformer through a data amplification circuit.
7. The residual current protection and data output circuit according to claim 1, wherein the switch-action mechanism is a circuit breaker, and one end of the release is connected to the control output end of the controller, and the other end of the release is connected to the switch-action mechanism.
8. The residual current protection and data output circuit according to claim 1, wherein a set of coil outputs of the zero sequence current transformer are commonly connected to the input terminal and the data output terminal of the controller.
9. The residual current protection and data output circuit according to claim 1, wherein different output terminals of the plurality of groups of coils of the zero sequence current transformer are respectively connected to the input terminal and the data output terminal of the controller.
10. The residual current protection and data output circuit according to claim 1, wherein the output terminals of the plurality of current transformers of the zero sequence current transformer are connected to the input terminal and the data output terminal of the controller, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112484.2U CN213813746U (en) | 2020-09-24 | 2020-09-24 | Residual current protection and data output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112484.2U CN213813746U (en) | 2020-09-24 | 2020-09-24 | Residual current protection and data output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213813746U true CN213813746U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022112484.2U Active CN213813746U (en) | 2020-09-24 | 2020-09-24 | Residual current protection and data output circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213813746U (en) |
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2020
- 2020-09-24 CN CN202022112484.2U patent/CN213813746U/en active Active
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