CN220584353U - Magnetic starter switch protector test platform for coal mine - Google Patents
Magnetic starter switch protector test platform for coal mine Download PDFInfo
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- CN220584353U CN220584353U CN202321413348.4U CN202321413348U CN220584353U CN 220584353 U CN220584353 U CN 220584353U CN 202321413348 U CN202321413348 U CN 202321413348U CN 220584353 U CN220584353 U CN 220584353U
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Abstract
The utility model discloses a magnetic starter switch protector test platform for a coal mine, which comprises a power supply, wherein the power supply is connected with a transformer to divide an analog voltage circuit connected with a power port of the switch protector and an analog current circuit connected with a current input port of the switch protector, the analog voltage circuit is respectively connected with a second resistance analog normal voltage, a first resistance and a second resistance analog undervoltage which are connected in series and a third resistance analog overvoltage, three parallel lines in the analog current circuit are connected with three current input ports of the protector, the three lines are respectively connected with a fourth resistance, a fifth resistance and a sixth resistance analog normal current, one line is connected with a switch for simulating phase loss, the three lines are switched to be respectively connected with a seventh resistance, an eighth resistance and a ninth resistance analog overload, the leakage test port of the protector is connected with a switch and grounded, and the return interface of the protector is connected with the switch and the public port. All protection functions of the switch protector can be tested through the circuit design analog signals.
Description
Technical Field
The utility model relates to the technical field of magnetic starter switch protectors for coal mines, in particular to a magnetic starter switch protector test platform for coal mines.
Background
A large number of electromechanical devices are used underground, a large number of devices are required to be overhauled every year, and the aims of reducing cost and enhancing efficiency can be achieved by repairing and recycling the switch protector for recovering the upper well.
In the repairing process of the electric part, when the switch protector is tested, the switch protector is required to be installed on an intact switch, 1140V voltage is connected for testing, electric shock accidents are easy to occur in the testing process, and great potential safety hazards exist. And the load is not carried in the test, and whether the switch protector can normally switch on or not can only be tested, but also the functions of current display, overload protection, open-phase protection, short-circuit protection, undervoltage protection, overvoltage protection and the like of the switch protector can not be judged. The magnetic starter used by our company at present mainly comprises three manufacturers of grong science and technology, nanjing Beijing and Zhejiang eight, the variety of the switch protector is complex, three intact switches are needed to test the switch protector, and the inconvenience is great.
Disclosure of Invention
Aiming at the following problems: 1. in the test process, test signals required by protection are not generated in the normal repair test process, and various protection functions of the switch protector cannot be tested, so that problems exist in the switch protector and enter a working site, and potential safety hazards are caused; 2. the switch protection test needs to use high voltage, so that safety risks exist; 3. the switch protector test equipment of a plurality of factories cannot be used mutually, and separate tests are required, so that the test difficulty is increased. The utility model provides a magnetic starter switch protector test for a coal mine.
The technical scheme adopted by the utility model is as follows: a magnetic starter switch protector test platform for a coal mine comprises a power supply for supplying power to an experiment platform, wherein the power supply is connected with a transformer to output multiple groups of voltages, a group of power ports connected with a switch protector is used as an analog voltage circuit, a group of current input ports connected with the switch protector is used as an analog current circuit, a second resistor is respectively connected with an analog normal voltage, a first resistor connected in series with the second resistor is connected with an analog undervoltage, a third resistor is connected with an analog overvoltage, three lines connected with three current input ports of the protector in parallel in the analog current circuit are respectively connected with a fourth resistor, a fifth resistor and a sixth resistor in a switching-on mode, one line is connected with a switch for simulating a phase-lack mode, the three lines are switched to be respectively connected with a seventh resistor, an eighth resistor and a ninth resistor for simulating overload mode, a switch is connected with a ground connection in a leakage test port of the protector, a return interface of the protector is connected with the switch and a common port is connected with the switch for switching-on in a switching-on mode.
Furthermore, the analog voltage circuit is provided with two analog voltage circuits, one analog voltage circuit is used for supplying power to a protector power supply, the other analog voltage circuit is connected with a voltage monitoring port and is connected with a second resistor to simulate normal voltage, the first resistor and the second resistor which are connected in series are connected to simulate undervoltage, and the third resistor is connected to simulate overvoltage.
Further, the analog voltage circuit and the analog current circuit are provided with a plurality of groups of switch protectors which respectively correspond to different types.
Further, a ganged relay switch is provided for switching to different types of switching protector circuits and different test types of analog circuits.
Further, the voltage of the power supply is 220V.
The utility model uses analog signals to test the functions of the switch protector, judges whether the functions of closing display, current display, overload protection, phase-failure protection, short-circuit protection, under-voltage protection, overpressure protection and the like are good, and prevents the protector with problems from entering the pit for use. One set of equipment can test the switch protector of a plurality of factories, simplifies the test flow and improves the working efficiency. 220V voltage is used as power supply voltage, so that the electric shock hazard degree is reduced, and the potential safety hazard is reduced. Compared with the prior art, the system has very high flexibility and practicality, has very high practical value in the maintenance process of the electromechanical equipment of the coal mine, and is very suitable for the use in the maintenance aspect of the electromechanical equipment of the coal mine.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a circuit diagram of the present utility model.
Detailed Description
In order to better understand the purpose, structure and function of the utility model, the utility model relates to a test platform for a magnetic starter switch protector for a coal mine, which is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the test platform of the magnetic starter switch protector for the coal mine comprises a power supply for supplying power to the test platform, wherein the power supply is connected with a transformer to output multiple groups of voltages, a group of power ports connected with the switch protector are used as analog voltage circuits, a group of current input ports connected with the switch protector are used as analog current circuits, a second resistor is respectively connected with an analog normal voltage, a first resistor connected in series with the second resistor is connected with an analog undervoltage and a third resistor is connected with an analog overvoltage, three lines connected with three current input ports of the protector in parallel in the analog current circuits are respectively connected with a fourth resistor, a fifth resistor and a sixth resistor in parallel, one line is connected with a switch for simulating open phase, the three lines are switched to be respectively connected with a seventh resistor, an eighth resistor and a ninth resistor for simulating overload, a switch is connected with a ground connection in a leakage test port of the protector, and a return interface of the protector is connected with a switch for being connected with a common port for being switched on during switching on.
In the actual test process of the prior art, the current display of the switch protector needs to switch in the load, the overload protection needs to switch in the load is actually overloaded, the phase-failure protection needs to switch in the voltage lack of one item, the short circuit protection needs to switch in the load is shorted, the undervoltage protection needs to switch in the voltage is lower than the rated value, the overvoltage protection needs to switch in the voltage exceeding the rated value, these are destructive tests in the actual test process, the process is complicated, and the current display, overload protection, phase-failure protection, short circuit protection, undervoltage protection, overvoltage protection and other functions of the switch protector cannot be tested because of not having so many test conditions.
In this embodiment, the power supply voltage of the test platform is 220V, and the circuit of 127V, 55V and 10V three different voltages is obtained through connecting the transformer, and the test platform is provided with three groups of analog voltage circuits and analog current circuits, and is used for testing the switch protectors of the technology of Nanjing Beijing, zhejiang eight da and Hua Rong respectively, and the test platform is provided with a knob switch to switch different switch protector test types, and is connected to the analog voltage circuits and the analog current circuits of the corresponding switch protectors through the relay switch of linkage. The switch protector manufacturer selects the knob by operating, so that the protection types required to be tested are switched, and the interchangeability of various switch protector tests is achieved. The test platform is provided with a button to select the type of the test protection function, and the button is used for controlling the action of the corresponding relay in the circuit so as to test the corresponding protection function of the protector.
The utility model utilizes the principle of series voltage division to simulate the normal voltage, undervoltage and overvoltage required by the test switch protector. The power port of the Nanjing double-Beijing switch protector is connected with a 127V voltage circuit, the voltage monitoring port US is connected with a 10V voltage circuit, a string resistor R2 in the circuit simulates normal voltage, a string resistor R1 and a resistor R2 simulate undervoltage, and a string resistor R3 simulates overvoltage; the Zhejiang eight-way switch protector and the Hua Rong technology switch protector utilize 55V voltage string resistor R12 and resistor R22 to simulate normal voltage, string resistor R11 and resistor R12 and resistor R21 and resistor R22 to simulate undervoltage, and string resistor R13 and resistor R23 to simulate overvoltage.
When the undervoltage test button is pressed, the undervoltage relay J4 acts to test the undervoltage protection function of the switch protector; when the overvoltage test button is pressed, the overvoltage relay J5 acts to test the overvoltage protection function of the switch protector.
In the test process of the switch protector, the current signals simulate different current signals required by the switch protector in a mode of simulating a series resistor in a current circuit. Three parallel lines in the analog current circuit are respectively connected into current input ports IA, IB and IC of the switch protector, and a line connected into the port IA is also provided with a switch for simulating open-phase. The three lines of Nanjing double Beijing are respectively connected with the resistor R4, the resistor R5 and the resistor R6, the eight Zhejiang three lines are respectively connected with the resistor R14, the resistor R15 and the resistor R16 and Hua Rong, and the three lines of the technology are respectively connected with the resistor R24, the resistor R25 and the resistor R26, so that the normal current display of the switch protector after the switch-on (the action of the switch-on relay J6) is ensured. And when the open-phase experiment button is pressed, the open-phase relay J3 acts to test the open-phase protection function of the switch protector.
The three lines of Nanjing double Beijing respectively switch the string resistor R7, the resistor R8 and the resistor R9, the eight Zhejiang eight to three lines respectively switch the string resistor R17, the resistor R18, the resistor R19 and the resistor R29, and the three lines of Hua Rong science and technology respectively switch the string resistor R27, the resistor R28 and the resistor R29, so that the overload protection function of the overload relay J2 action test switch protector is ensured when the overload test button is pressed.
Specifically, a 220V power supply is connected with a breaker QF and then is connected with two input ends of a transformer in series, three groups of voltages are arranged at the voltage output end of the transformer, the first group comprises a voltage output end 1 and a voltage output end 2 with the voltages of 127V, the second group comprises a voltage output end 3 and a voltage output end 4 with the voltages of 55V, the third group comprises a voltage output end 5 and a voltage output end 6 with the voltages of 10V, the voltage output end 1, the voltage output end 3 and the voltage output end 5 are respectively connected with a fuse FU2, a fuse FU3 and a fuse FU4, a control loop is connected in the voltage output end 1 and the voltage output end 2, the control loop comprises a control switch SK11, a control switch SK12 and a control switch SK13 which are connected in parallel in the voltage output end 1 and used for switching different switch protector types, the relay J11 connected with the control switch SK11 controls the normally open switch J11-1, the normally open switch J11-3 and the normally open switch J11-5, the relay J12 connected with the control switch SK12 controls the normally open switch J12-1 and the normally open switch J12-3, the control switch SK13 is connected with the relay J13 to control the normally open switch J13-1 and the normally open switch J13-3, the device also comprises a leakage test control switch SK1, an overload test control switch SK2, a phase interruption test control switch SK3, an undervoltage test control switch SK4, an overvoltage test control switch SK5, a self-checking test control switch SK7 and a closing test control switch SK6, the control switch SK1 is connected with the relay J1 to control the normally open switch J1-1, the normally open switch J1-3 and the normally open switch J1-5, the control switch SK2 is connected with the relay J2 to control the normally open switch J2-1, the normally open switch J2-3 and the normally open switch J2-5, the control switch SK3 is connected with the relay J3 to control the normally open switch J3-2, the normally open switch J3-4 and the normally open switch J3-6, the control switch SK4 is connected with the relay J4 to control the normally open switch J4-1, the normally closed switch J4-2, the normally open switch J4-3, the normally closed switch J4-4, the normally open switch J4-5 and the normally closed switch J4-6, the control switch SK5 is connected with the relay J5 to control the normally open switch J5-1, the normally closed switch J5-2 and the normally open switch J5-3, the normally closed switch J5-4 and the normally open switch J5-6, the control switch SK6 is connected with the protection switching-on output point of the relay J6 and the switch protector, the relay J6 controls the normally open switch J6-1, the normally open switch J6-2, the normally open switch J6-3, the normally open switch J6-4, the normally open switch J6-5 and the normally open switch J6-6, and the control switch SK7 is connected with the protection switching-on output point of the switch protector.
In the analog circuit for testing the Nanjing double-Beijing switch protector, a voltage output end 1 is connected in series with a normally open switch J11-1 and is connected to a power supply live wire port L of the switch protector, a voltage output end 2 is connected to a zero wire port N of the switch protector, a voltage output end 5 is connected with a first end of a normally open switch J11-3, a second end of the normally open switch J11-3 is commonly connected with a first end of a normally open switch J4-1 and a first end of a normally closed switch J4-2, a second end of the normally open switch J4-1 is connected with a first end of a resistor R1, a first end of a normally open switch J5-1 and a first end of a normally closed switch J5-2, a second end of the normally open switch J5-1 is connected with a voltage monitoring port US of the switch protector after being connected with the resistor R3 in series, the second end of the normally-closed switch J5-2 is connected with the voltage monitoring port US of the switch protector in series after being connected with the resistor R2, the voltage output end 6 is connected with the communication port Com1 of the switch protector, the voltage output end 3 is connected with the first end of the normally-open switch J11-5, the second end of the normally-open switch J11-5 is connected with the first end of the normally-open switch J2-1 and the first end of the normally-closed switch J2-2 in common, the second end of the normally-closed switch J2-1 is connected with the first end of the resistor R4 in parallel after being connected with the normally-open switch J6-1, the resistor R8 is connected with the first end of the resistor R9 in parallel, the second end of the resistor R4 and the second end of the resistor R9 are connected with the first end of the normally-closed switch J3-2 in common, the second end of the normally-closed switch J3-2 is connected with the current input port IA of the switch protector, the second end of the resistor R5 and the second end of the resistor R8 are both connected with a current input port IB of the switch protector, the second end of the resistor R6 and the second end of the resistor R7 are both connected with a current input port IC of the switch protector, a leakage test port of the switch protector is connected with the normally open switch J1-1 in series and then grounded, and a return interface of the switch protector is connected with the common port after being connected with the normally open switch J6-2 in series.
In the analog circuit for testing the Zhejiang eight-day switch protector, a voltage output end 3 is connected with a first end of a normally open switch J12-1, a second end of the normally open switch J12-1 is commonly connected with a first end of a normally open switch J4-3 and a first end of a normally closed switch J4-4, a second end of the normally open switch J4-3 is connected with a first end of a resistor R11, a second end of the normally open switch J5-3 and a first end of the normally closed switch J5-4, a second end of the normally open switch J5-3 is connected with a power input port of the switch protector after being connected with a resistor R13 in series, a second end of the normally closed switch J5-4 is connected with a power input port of the switch protector after being connected with a resistor R12 in series, a voltage output end 4 is connected with another power input port of the switch protector, a voltage output end 5 is connected with a first end of the normally open switch J12-3, the second end of the normally open switch J12-3 is commonly connected with the first end of the normally open switch J2-3 and the first end of the normally closed switch J2-4, the second end of the normally closed switch J2-4 is connected with the first end of the normally open switch J6-3 in series and then connected with the resistor R14, the resistor R15 and the first end of the resistor R16 in parallel, the normally open switch J2-3 is connected with the resistor R17, the resistor R18 and the first end of the resistor R19 in parallel, the second end of the resistor R14 and the second end of the resistor R19 are commonly connected with the first end of the normally closed switch J3-4, the second end of the normally closed switch J3-4 is connected with the current input port IA of the switch protector, the second end of the resistor R15 and the second end of the resistor R18 are both connected with the current input port IB of the switch protector, the second end of the resistor R16 and the second end of the resistor R17 are both connected with the current input port IC of the switch protector, the voltage output end 6 is connected with a current grounding port IN of the switch protector, the drain test port of the switch protector is connected with the normally open switch J1-3 IN series and then grounded, and the return interface of the switch protector is connected with the common port after being connected with the normally open switch J6-4 IN series.
In the analog circuit for testing the Hugrong-Su switch protector, a voltage output end 3 is connected with a first end of a normally open switch J13-1, a second end of the normally open switch J13-1 is commonly connected with a first end of a normally open switch J4-5 and a first end of a normally closed switch J4-6, a second end of the normally open switch J4-5 is connected with a first end of a resistor R21, a second end of the normally open switch J5-5 and a first end of the normally closed switch J5-6, a second end of the normally open switch J5-5 is connected with a power input port of the switch protector after being connected with a resistor R23 in series, a second end of the normally closed switch J5-6 is connected with a power input port of the switch protector after being connected with a resistor R22 in series, a voltage output end 4 is connected with another power input port of the switch protector, a first end of the normally open switch J13-3 is connected with a voltage output end 5, the second end of the normally open switch J13-3 is commonly connected with the first end of the normally open switch J2-5 and the first end of the normally closed switch J2-6, the second end of the normally closed switch J2-6 is connected with the first end of the normally open switch J6-5 in series, the resistor R24, the resistor R25 and the first end of the resistor R26 are connected with the normally open switch J2-5 in parallel, the second end of the resistor R24 and the second end of the resistor R29 are commonly connected with the first end of the normally closed switch J3-6, the second end of the normally closed switch J3-6 is connected with the current input port IA of the switch protector, the second end of the resistor R25 and the second end of the resistor R28 are both connected with the current input port IB of the switch protector, the second end of the resistor R26 and the second end of the resistor R27 are both connected with the current input port IC of the switch protector, the voltage output end 6 is connected with a current grounding port IN of the switch protector, the drain test port of the switch protector is connected with the normally open switch J1-5 IN series and then grounded, and the return interface of the switch protector is connected with the common port after being connected with the normally open switch J6-6 IN series.
The test platform provided by the utility model simulates the signals such as current, overload, phase loss, short circuit, undervoltage and overvoltage required by the switch protector through circuit design, can test all protection functions of the switch protector, can test the switch protectors of a plurality of factories, simultaneously uses 220V voltage as power supply voltage, and ensures that the power supply is connected with a transformer to provide various voltages required by the switch protector, so that the maintenance operation is safer.
The test platform is also provided with a knob to select the type of test function. In specific operation, before power-on, the 'manual' and 'protector type selection' knob are required to be confirmed to be in a 'zero position'. After power-on, a protector type selecting knob is operated to select the protector type of the test switch, and then a manual and automatic knob is operated to select a manual mode and an automatic mode.
The function of the switch protector is then tested. The experimental sequence is as follows: (1) self-test output point (press self-test button): the self-checking indicator lamp of the touch screen flashes; (2) closing output point (pressing closing button): the touch screen self-checking indicator lamp can flash or observe whether the switch protector has a closing display and a current display; (3) overload test (knob screwed to overload): the switch protector displays overload; (5) wire break test (knob turned to open phase): the switch protector displays open phase; (6) under-voltage test (knob screwed to under-voltage): the switch protector displays the undervoltage; (7) overpressure test (knob screwed to overpressure): the switch protector displays overpressure; (8) leakage test (pressing leakage test button): the switch protector displays leakage lock; (9) overcurrent test (pressing the retry button): the switch protector displays a short circuit. When the self-checking output point and the closing output point are the same point, the closing output point is operated.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The test platform is characterized by comprising a power supply for supplying power to an experiment platform, wherein the power supply is connected with a transformer to output multiple groups of voltages, a group of power ports connected with the switch protector is used as an analog voltage circuit, a group of current input ports connected with the switch protector is used as an analog current circuit, a second resistor is respectively connected with an analog normal voltage, a first resistor and a second resistor which are connected in series are connected with an analog undervoltage and a third resistor are connected with an analog overvoltage, three lines are connected with three current input ports of the protector in parallel in the analog current circuit, the three lines are respectively connected with a fourth resistor, a fifth resistor and a sixth resistor to simulate normal currents during closing, one line access switch is used for simulating phase failure, the three lines are switched to be respectively connected with a seventh resistor, an eighth resistor and a ninth resistor to simulate overload, a switch is connected with a ground in a leakage test port of the protector, a return interface of the protector is connected with the switch and is connected with a common port to be used for being turned on during closing.
2. The test platform of the magnetic starter switch protector for the coal mine according to claim 1, wherein two groups of analog voltage circuits are arranged, one group is used for supplying power to a protector power supply, the other group is connected with a voltage monitoring port of the switch protector and connected with a second resistor to simulate normal voltage, connected with a first resistor and a second resistor in series to simulate undervoltage, and connected with a third resistor to simulate overvoltage.
3. The test platform for the magnetic starter switch protector for the coal mine according to claim 1 or 2, wherein a plurality of groups of switch protectors which correspond to different types are arranged on the analog voltage circuit and the analog current circuit.
4. A magnetic starter switch protector test platform for coal mines according to claim 3, wherein a linked relay switch is provided for switching to the circuits of different types of switch protector and the analog circuits of different test types.
5. The magnetic starter switch protector test platform for coal mines according to claim 1, wherein the voltage of the power supply is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321413348.4U CN220584353U (en) | 2023-06-06 | 2023-06-06 | Magnetic starter switch protector test platform for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321413348.4U CN220584353U (en) | 2023-06-06 | 2023-06-06 | Magnetic starter switch protector test platform for coal mine |
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| Publication Number | Publication Date |
|---|---|
| CN220584353U true CN220584353U (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321413348.4U Active CN220584353U (en) | 2023-06-06 | 2023-06-06 | Magnetic starter switch protector test platform for coal mine |
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| Country | Link |
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| CN (1) | CN220584353U (en) |
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2023
- 2023-06-06 CN CN202321413348.4U patent/CN220584353U/en active Active
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