CN216792368U - Insulation monitoring device - Google Patents
Insulation monitoring device Download PDFInfo
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- CN216792368U CN216792368U CN202220157917.2U CN202220157917U CN216792368U CN 216792368 U CN216792368 U CN 216792368U CN 202220157917 U CN202220157917 U CN 202220157917U CN 216792368 U CN216792368 U CN 216792368U
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- leakage current
- current sensor
- monitoring device
- main controller
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Abstract
The utility model discloses an insulation monitoring device, which comprises a main controller arranged at a monitoring end and at least one leakage current sensor arranged on the site, wherein the leakage current sensor is electrically connected with the main controller through a shielded twisted pair, and the main controller is communicated with a remote terminal through an RS485 communication interface; the main control unit is arranged in the shell, a liquid crystal screen is arranged on a panel of the shell, and the main control unit is electrically connected with the liquid crystal screen. The insulation monitoring device adopting the structure can monitor the insulation performance of the lightning arrester or the cable without changing any wiring and operation mode of the original acquisition object, and meanwhile, the leakage current sensor (acquisition end) and the main controller (monitoring end) are connected through the shielding twisted pair, so that the monitoring and the acquisition object are completely isolated, and the operation is more reliable.
Description
Technical Field
The utility model relates to the technical field of insulation monitoring, in particular to an insulation monitoring device.
Background
The existing lightning arrester or cable has operation potential safety hazard in the operation process, but the existing technology lacks the insulation monitoring technology for the lightning arrester or cable, so that the fault is not found and eliminated in time, and the loss which is difficult to recover is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an insulation monitoring device which can monitor the insulation performance of an arrester or a cable without changing any wiring and operation mode of an original acquisition object, and meanwhile, a leakage current sensor (acquisition end) and a main controller (monitoring end) are connected through a shielded twisted pair, so that the monitoring and the acquisition object are completely isolated, and the operation is more reliable.
In order to achieve the purpose, the utility model provides an insulation monitoring device, which comprises a main controller arranged at a monitoring end and at least one leakage current sensor arranged on the site, wherein the leakage current sensor is electrically connected with the main controller through a shielded twisted pair, and the main controller is communicated with a remote terminal through an RS485 communication interface;
the main control unit is arranged in the shell, a liquid crystal screen is arranged on a panel of the shell, and the main control unit is electrically connected with the liquid crystal screen.
Preferably, the leakage current sensor is a micro current sensor.
Preferably, the shell is further provided with a fault indicator lamp which is turned on when a leakage current fault is detected, an operation indicator lamp which is turned on when the leakage current fault is detected, and a power indicator lamp which is turned on after the leakage current fault is detected, wherein the fault indicator lamp, the operation indicator lamp and the power indicator lamp are electrically connected with the main controller.
Preferably, the magnetic core of the leakage current sensor is connected with a grounding wire of the lightning arrester in a penetrating manner, and is used for monitoring the insulating property of the lightning arrester.
Preferably, the magnetic core of the leakage current sensor is connected with the shielding layer of the cable in a penetrating way, and is used for monitoring the insulation performance of the cable.
Therefore, the insulation monitoring device adopting the structure can monitor the insulation performance of the lightning arrester or the cable without changing any wiring and operation mode of the original acquisition object, and simultaneously, the leakage current sensor (acquisition end) and the main controller (monitoring end) are connected through the shielding twisted pair, so that the monitoring and the acquisition object are completely isolated, and the operation is more reliable.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic circuit diagram of an insulation monitoring device according to an embodiment of the present invention;
FIG. 2 is a schematic view of an insulation monitoring device according to an embodiment of the present invention installed to monitor a cable;
fig. 3 is an external view of a housing of an insulation monitoring device according to an embodiment of the utility model.
Wherein: 1. a cable; 2. a shielding layer; 3. a leakage current sensor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
FIG. 1 is a schematic circuit diagram of an insulation monitoring device according to an embodiment of the present invention; FIG. 2 is a schematic view of an insulation monitoring device according to an embodiment of the present invention installed to monitor a cable; fig. 3 is an outline view of a housing of an insulation monitoring device according to an embodiment of the present invention, and as shown in the drawing, the structure of the present invention includes a main controller disposed at a monitoring end and at least one leakage current sensor disposed on a site, the leakage current sensor is electrically connected to the main controller via a shielded twisted pair, and the main controller is in communication with a remote terminal via an RS485 communication interface; the main control unit is arranged in the shell, a liquid crystal screen is arranged on a panel of the shell, and the main control unit is electrically connected with the liquid crystal screen.
Preferably, the leakage current sensor is a micro current sensor.
Preferably, still be provided with on the casing when detecting the leakage current trouble the bright fault indicator of lamp, when normal operating bright operation indicator and the circular telegram back bright power indicator of lamp, the fault indicator the operation indicator and the power indicator all with main control unit electricity links.
In this embodiment, when it is detected that the leakage current of the object to be measured is greater than the primary alarm current threshold, the fault indicator lamp is turned on to indicate that a fault occurs. When the leakage current of the detected object is larger than the secondary alarm current threshold value, the fault indicator lamp is turned on and outputs an alarm passive contact, and the realization of the functions is based on the establishment of software and does not belong to the protection range of the application, so that the repeated description is omitted.
The casing below the indicator light of this embodiment is further provided with an "OK" key, a "key, a" xxx "key, and an" ESC "key, which are electrically connected with the main controller, and the key functions are explained as follows:
the function of the "OK" key is: pressing a 'confirm' key on a main interface to enter a main menu for function setting and to confirm the current setting and enter the next-level setting in the function setting process;
the effect of the "a" linkage is: increasing a value of the selected data by '1' in a function setting process and moving up a cursor in a menu selection process to select a different setting object;
the effect of the "xxx" bond is: decreasing the value of the selected data by "1" in the function setting process and moving down the cursor in the menu selection process to select a different setting object;
the role of the "ESC" bond is: exiting the menu at the current level and returning to the menu at the previous level in the menu operation process;
the present embodiment also has the following functions:
1. real-time query
After the device is normally started, the liquid crystal display is displayed at the position of the main interface, an OK key is pressed at the moment, leakage current can be inquired on a real-time inquiry interface, and an ESC key is pressed to return to the main interface;
2. parameter setting
The 'OK' key is pressed on the main interface to enter the setting interface, the 'parameters' are selected by pressing the 'A, X' key, the communication setting, the baud rate and the address can be inquired. Changing the content of each setting through an 'tangle-solidup-letter' key or a't' key, pressing an 'OK' key to enter the next setting, pressing an 'ESC' key to quit the setting, and returning to the previous menu;
3. date setting
Pressing an OK key on a main interface to enter a setting interface, selecting date setting, pressing a T-shirt key or a T-shirt key to set, pressing the OK key to store the current setting and enter the next setting, and pressing an ESC key to exit the setting;
4. fault recording
Pressing an OK key on a main interface to enter a setting interface, selecting fault records, inquiring the fault records through an X key or a xxx key, and eliminating the fault records by pressing an ESC key for a long time;
5. factory setting
Pressing an 'OK' key on a main interface to enter a setting interface, selecting 'factory setting', inputting a password to enter a page, selecting a setting item needing to be adjusted by a 'tangle-solidup' key or a 'xxx' key, pressing an 'OK' key to enter alarm value adjustment, changing a set numerical value by the 'tangle-solidup' key or the 'xxx' key, pressing the 'OK' key to save the setting, pressing an 'ESC' key to exit the setting after the setting is finished, and returning to a previous-level menu;
6. version number query
And entering a setting interface according to 'OK' on the main interface, and selecting 'version number' to inquire the version model of the local machine.
It should be noted that the implementation of the above function is based on software construction, and does not belong to the protection scope of the present application, and therefore is not described herein again
In a first embodiment, the magnetic core of the leakage current sensor is connected in series with the ground wire of the lightning arrester, and is used for monitoring the insulating property of the lightning arrester.
In the second embodiment, the magnetic core of the leakage current sensor 3 is connected with the shielding layer 2 of the cable 1 in a penetrating way, and is used for monitoring the insulation performance of the cable 1.
Therefore, the insulation monitoring device adopting the structure can monitor the insulation performance of the lightning arrester or the cable without changing any wiring and operation mode of the original acquisition object, and simultaneously, the leakage current sensor (acquisition end) and the main controller (monitoring end) are connected through the shielding twisted pair, so that the monitoring and the acquisition object are completely isolated, and the operation is more reliable.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the utility model without departing from the spirit and scope of the utility model.
Claims (5)
1. An insulation monitoring device, characterized in that: the monitoring system comprises a main controller arranged at a monitoring end and at least one leakage current sensor arranged on the site, wherein the leakage current sensor is electrically connected with the main controller through a shielded twisted pair, and the main controller is communicated with a remote terminal through an RS485 communication interface;
the main control unit is arranged in the shell, a liquid crystal screen is arranged on a panel of the shell, and the main control unit is electrically connected with the liquid crystal screen.
2. An insulation monitoring device as claimed in claim 1, wherein: the leakage current sensor is a micro-current sensor.
3. An insulation monitoring device as claimed in claim 2, wherein: still be provided with the bright fault indicator lamp of lamp when detecting leakage current trouble on the casing, the bright operation pilot lamp of lamp and the bright power indicator lamp of circular telegram back lamp when normal operating, the fault indicator lamp the operation pilot lamp and the power indicator lamp all with main control unit electricity links.
4. An insulation monitoring device as claimed in claim 3, wherein: and the magnetic core of the leakage current sensor is connected with the grounding wire of the lightning arrester in a penetrating manner and is used for monitoring the insulating property of the lightning arrester.
5. An insulation monitoring device as claimed in claim 3, wherein: and the magnetic core of the leakage current sensor is connected with the shielding layer of the cable in a penetrating way and is used for monitoring the insulation performance of the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220157917.2U CN216792368U (en) | 2022-01-20 | 2022-01-20 | Insulation monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220157917.2U CN216792368U (en) | 2022-01-20 | 2022-01-20 | Insulation monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216792368U true CN216792368U (en) | 2022-06-21 |
Family
ID=82014667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220157917.2U Active CN216792368U (en) | 2022-01-20 | 2022-01-20 | Insulation monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216792368U (en) |
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2022
- 2022-01-20 CN CN202220157917.2U patent/CN216792368U/en active Active
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