CN210157544U - Low-voltage motor protection control device - Google Patents
Low-voltage motor protection control device Download PDFInfo
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- CN210157544U CN210157544U CN201920885532.6U CN201920885532U CN210157544U CN 210157544 U CN210157544 U CN 210157544U CN 201920885532 U CN201920885532 U CN 201920885532U CN 210157544 U CN210157544 U CN 210157544U
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Abstract
The utility model discloses a low-voltage motor protection controlling means, the device includes: the device comprises a box body (1), a back plate (4), a front panel (2), a circuit board (5), a control panel (6), a measurement communication board (7), a conversion board (8) and a display control circuit board (9), wherein the circuit board (5), the control panel (6), the measurement communication board (7), the conversion board and the display control circuit board are arranged in the box body (1); one end of the circuit board (5), one end of the control board (6) and one end of the measuring communication board (7) are fixedly connected with the back board (4), and the planes of the circuit board (5), the control board (6) and the measuring communication board (7) are perpendicular to the plane of the back board (4); the other end of the circuit board (5), the other end of the control board (6) and the other end of the measurement communication board (7) are fixedly connected with a conversion board (8), the conversion board (8) is fixedly connected with a display control circuit board (9), and the planes of the conversion board (8) and the display control circuit board (9) are parallel to the plane of the back board (4); the front panel (2) is embedded with a visible transparent plate (3), and information on the display control circuit board (9) is checked through the visible transparent plate (3). The device of the utility model is simple in structure, dismantle simple swift, maintenance, debugging are simple and convenient and can improve production efficiency.
Description
Technical Field
The utility model relates to a net equipment technical field is joined in marriage to the low pressure, especially relates to a low-voltage motor protection controlling means.
Background
With the application of electric intelligence and automation in China and the continuous improvement of the requirements of the ubiquitous power internet of things technology and the engineering project construction in various regions on electric equipment, the traditional low-voltage motor protection control device needs to be improved in the aspects of system reliability and interference indexes, for example, how to improve the problem of mutual interference between strong and weak electricity in long-term operation by an innovative design means and how to well operate a complete set of low-voltage distribution network switchgear, the low-voltage motor protection control device becomes a technical development trend.
All modules of traditional low-voltage motor protection control device all set up inside the box, need unpack it apart, take out respectively during installation and maintenance and operate, and it is very inconvenient, influence the efficiency of production greatly to traditional low-voltage motor protection control device product control is single, the function is few, and simultaneous performance and application demand do not obtain attention, and various problems appear in the operation and make intelligent performance not come out.
Disclosure of Invention
The utility model aims at providing a low-voltage motor protection controlling means, dismantle simple swift, maintenance, debugging are simple and convenient and can improve production efficiency to the not enough of above-mentioned technique.
In order to achieve the above object, the utility model provides a following scheme:
a low-voltage motor protection control device, comprising: the device comprises a box body, a back plate, a front panel, a circuit board, a control panel, a measurement communication board, a conversion board and a display control circuit board, wherein the circuit board, the control panel, the measurement communication board, the conversion board and the display control circuit board are arranged in the box body;
one end of the circuit board, one end of the control board and one end of the measurement communication board are fixedly connected with the back board, and the planes of the circuit board, the control board and the measurement communication board are all perpendicular to the plane of the back board;
the other end of the circuit board, the other end of the control board and the other end of the measurement communication board are fixedly connected with the conversion board, the conversion board is fixedly connected with the display control circuit board, and the planes of the conversion board and the display control circuit board are parallel to the plane of the backboard;
the front panel is embedded with a visible transparent plate, and the information on the display control circuit board is checked through the visible transparent plate.
Optionally, the control board is disposed between the circuit board and the measurement communication board.
Optionally, the conversion board is fixedly connected with the display control circuit board through a copper column.
Optionally, the front panel is provided with a plurality of function keys, and each function key is electrically connected with the control board.
Optionally, the visible transparent plate is a transparent acrylic plate.
Optionally, the low-voltage motor protection control device further includes: and the external wiring terminal is electrically connected with the input end of the circuit board.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model provides a low-voltage motor protection controlling means drives corresponding circuit board, control panel, measurement communication board, change-over panel and apparent control circuit board through pulling out to the backplate and inserting, makes it install and dismantle simple swift, the above-mentioned device simple structure dismantles simply swiftly, and maintenance, debugging are simple and convenient and can improve production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of the low-voltage motor protection control device of the present invention;
fig. 2 is a schematic structural diagram of the external connection terminal of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a low-voltage motor protection controlling means dismantles simply swiftly, and maintenance, debugging are simple and convenient and can improve production efficiency.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the structure diagram of the low-voltage motor protection control device of the present invention, as shown in fig. 1, a low-voltage motor protection control device includes: the device comprises a box body 1, a back plate 4, a front panel 2, a circuit board 5, a control board 6, a measurement communication board 7, a conversion board 8 and a display control circuit board 9, wherein the circuit board 5, the control board 6, the measurement communication board 7, the conversion board 8 and the display control circuit board 9 are arranged in the box body 1; one end of the circuit board 5, one end of the control board 6 and one end of the measurement communication board 7 are fixedly connected with the back board 4, and the planes of the circuit board 5, the control board 6 and the measurement communication board 7 are perpendicular to the plane of the back board 4; the other end of the circuit board 5, the other end of the control board 6 and the other end of the measurement communication board 7 are fixedly connected with the conversion board 8, the conversion board 8 is fixedly connected with the display and control circuit board 9, and the planes of the conversion board 8 and the display and control circuit board 9 are parallel to the plane of the back plate 4; the front panel 2 is embedded with a visible transparent plate 3, and information on the display control circuit board 9 is checked through the visible transparent plate 3.
Specifically, the box body 1 adopts an aluminum section barrel type case, and the back plate 4 and the front panel 2 are assembled on the box body 1 by screws. The surface of the box body 1 is treated by adopting a sand blasting oxidation process, which is the most advanced domestic surface treatment technology at present, so that the whole case is harmonious.
The box 1 is rectangular in shape and has dimensions (length × width × height) of 91mm × 116mm × 91 mm.
The circuit board 5, the control board 6, the measurement communication board 7, the conversion board 8 and the display control circuit board 9 are integrally assembled on the back board 4, the upper side and the lower side of all the boards are limited in the concave grooves in the box body 1, and the installation is convenient by adopting the mode.
In the embodiment, each board of the whole device is modularized, namely, the board is divided into the circuit board 5, the control board 6, the measurement communication board 7, the conversion board 8 and the display control circuit board 9, so that the production, debugging and field operation and maintenance are facilitated
The display control circuit board 9 adopts a friendly human-computer interface, a full-Chinese large-screen LCD is provided with a work indicator light, a fault indicator light, a combined indicator light and a separated indicator light, and the equipment can check parameter information on the display screen through a front panel during operation, wherein specific parameters include measurement current and angle, three groups of line voltages, active power, reactive power, power factors, active power, reactive power and the like.
Preferably, the control board 6 is disposed between the circuit board 5 and the measurement communication board 7, and each board is spaced apart from the other board.
Preferably, the conversion board 8 is fixedly connected with the display and control circuit board 9 through a copper column. Specifically, the conversion board 8 and the display control circuit board 9 are fixedly connected through a 4mm copper column and fixed through screws.
Preferably, the front panel 2 is provided with a plurality of function keys 10, and each of the function keys 10 is electrically connected to the control board 6. Specifically, the function keys include: the left-turning key, the right-turning key, the SET key and the confirming key are used for adjusting display information of the display screen according to the function keys.
Preferably, the transparent visible plate 3 is a transparent acrylic plate which has excellent transparency and is beautiful.
Preferably, the low-voltage motor protection control device further includes: and the external wiring terminal 11 is electrically connected with the output end of the circuit board 5. Through setting up outside binding post 11 in box 1 outside, be favorable to strong and weak electric separation, prevent strong and weak electric mutual interference.
Specifically, the circuit board 5 is a CT protection measuring circuit and a working power supply circuit, the CT protection measuring circuit integrates the collected protection current and the measured current, and the measured current are processed through logical connection, so that the protection current and the measuring circuit share one wiring terminal, the number of terminals of the external wiring terminal 11 is reduced, and the number of the external wiring terminals 11 and peripheral wires are saved, as shown in fig. 2.
The CT protection measuring circuit is used for measuring the current of the equipment to be protected and sending current data to the control board 6, and the working power supply circuit is used for supplying power to the low-voltage motor protection control device.
The CT protection measuring circuit measures protection current, the current generated by short circuit of a protected body in the circuit is overlarge, and when the current reaches a certain current value, a tripping instruction is sent out instantly by the control panel 6, so that the power supply of the protected body is cut off.
The control board 6 is a CPU control circuit and an output control circuit, and is configured to send the received data information to the display control circuit board 9 through the conversion board 8 for display.
The measurement communication board 7 is PT measuring circuit and 485 communication circuit, PT measuring circuit is used for measuring the voltage size of treating the protection equipment to give control panel 6 with voltage data transmission, 485 communication circuit possesses RS485 communication interface, adopts standard MODBUS communication protocol, possesses four distant functions (telemetering measurement, remote signalling, remote control, remote regulation) simultaneously.
The conversion plate 8 is a COM conversion plate.
The working principle of the CT protection measuring circuit is as follows: the external standard current is connected to a CT protection measurement circuit board, and is input to an analog loop of a CPU through an operational amplifier to be subjected to analog-digital conversion into digital, and the CPU processes data to carry out protection.
The working principle of the output control circuit is as follows: the signal directly output by the CPU control circuit passes through the driving module to control the closing of the relay coil on the output control circuit.
PT measurement circuit theory of operation: the external standard voltage is connected to the PT measuring circuit, and is input to an analog loop of the CPU control circuit through the operational amplifier to be subjected to analog-digital conversion into digital, and the CPU control circuit processes data.
The display control circuit board working principle: the display current, voltage, active power and the like are directly communicated with a CPU control circuit to control and display current, voltage, active power and the like.
The low-voltage motor protection control device is electrically connected with external equipment (a power distribution cabinet).
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. A low-voltage motor protection control device, characterized by comprising: the device comprises a box body (1), a back plate (4), a front panel (2), a circuit board (5), a control panel (6), a measurement communication board (7), a conversion board (8) and a display control circuit board (9), wherein the circuit board, the control panel (6), the measurement communication board, the conversion board and the display control circuit board are arranged in the box body (1);
one end of the circuit board (5), one end of the control board (6) and one end of the measuring communication board (7) are fixedly connected with the back board (4), and the planes of the circuit board (5), the control board (6) and the measuring communication board (7) are perpendicular to the plane of the back board (4);
the other end of the circuit board (5), the other end of the control board (6) and the other end of the measurement communication board (7) are fixedly connected with the conversion board (8), the conversion board (8) is fixedly connected with the display control circuit board (9), and the planes of the conversion board (8) and the display control circuit board (9) are parallel to the plane of the back board (4);
the front panel (2) is embedded with a visible transparent plate (3), and information on the display control circuit board (9) is checked through the visible transparent plate (3).
2. The protection and control device for low-voltage motors according to claim 1, characterized in that said control board (6) is arranged between said circuit board (5) and said measurement communication board (7).
3. The protection control device for the low-voltage motor according to claim 1, characterized in that the conversion plate (8) is fixedly connected with the display control circuit board (9) through a copper column.
4. The protection and control device for low-voltage motors according to claim 1, characterized in that said front panel (2) is provided with a plurality of function keys (10), each of said function keys (10) being electrically connected to said control board (6).
5. The protection and control device for a low-voltage motor according to claim 1, characterized in that said transparent visible plate (3) is a see-through acrylic plate.
6. The low-voltage motor protection control device as claimed in claim 1, further comprising: the external wiring terminal (11), the external wiring terminal (11) with the input electricity of circuit board (5) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885532.6U CN210157544U (en) | 2019-06-13 | 2019-06-13 | Low-voltage motor protection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885532.6U CN210157544U (en) | 2019-06-13 | 2019-06-13 | Low-voltage motor protection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210157544U true CN210157544U (en) | 2020-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920885532.6U Active CN210157544U (en) | 2019-06-13 | 2019-06-13 | Low-voltage motor protection control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210157544U (en) |
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2019
- 2019-06-13 CN CN201920885532.6U patent/CN210157544U/en active Active
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