CN220650834U - Service life testing device for electric switch device - Google Patents
Service life testing device for electric switch device Download PDFInfo
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- CN220650834U CN220650834U CN202322284767.9U CN202322284767U CN220650834U CN 220650834 U CN220650834 U CN 220650834U CN 202322284767 U CN202322284767 U CN 202322284767U CN 220650834 U CN220650834 U CN 220650834U
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- power supply
- switching device
- electric switching
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- intermediate relay
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 claims description 4
- 101100520231 Caenorhabditis elegans plc-3 gene Proteins 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Abstract
The service life testing device of the electric switching device comprises a power supply, an HMI display control device, a PLC controller, a first switch power supply and a second switch power supply, wherein the first switch power supply and the second switch power supply are used for supplying power to the HMI display control device and the PLC controller; is characterized in that: the PLC is connected with an intermediate relay, and two ends of a control coil of the intermediate relay are respectively connected to a digital quantity output port of the PLC and a power supply ground; two ends of a control coil of the tested electric switching device are respectively connected to a pair of normally open points of the intermediate relay. According to the life testing device for the electric switching device, the PLC controls the on/off of the tested electric switching device through the intermediate relay so as to test the electric life of the electric switching device; for electric switches of different types and specifications, only the intermediate relay needs to be replaced, the test device has fewer workpieces, the test operation steps are relatively simple, and the universality is stronger.
Description
Technical Field
The present utility model relates to a life test apparatus for an electric switching device, and more particularly, to an apparatus for life testing an electric switching device such as a relay, a contactor, or the like, which is opened and closed.
Background
In order to ensure the operation stability of the apparatus, the electric life of coil-controlled electric switching devices such as relays and contactors is increasingly receiving attention from users, and it is necessary to detect the electric life of the electric switching devices used in the apparatus, that is, the life of the electric switching devices during continuous and intermittent opening and closing. The current electric switch device life detection device has the defects of complex operation steps, more devices forming workpieces, low universality and the like.
In the electric life detection process of the electric switching device, because the electric switching device has a plurality of types, not only has direct current and alternating current, but also has different specifications of pull-in voltages of the alternating current or direct current type, a testing device with strong universality is required to be designed so as to simplify the life testing steps of the electric switching device.
Disclosure of Invention
In order to overcome the defects of the technical problems, the utility model provides a life testing device for an electric switching device.
The service life testing device of the electric switching device comprises a power supply, an HMI display control device, a PLC (programmable logic controller), a first switching power supply and a second switching power supply, wherein the power supply is used for supplying alternating current, and the HMI display control device is in communication connection with the PLC through a communication connection line; the first switching power supply and the second switching power supply are used for converting alternating current output by the power supply into direct current and respectively supplying power to the HMI display control device and the PLC; the PLC is provided with a digital quantity input port and a digital quantity output port; the method is characterized in that: the PLC is connected with an intermediate relay, and two ends of a control coil of the intermediate relay are respectively connected to a digital quantity output port of the PLC and a power supply ground; two ends of a control coil of the tested electric switching device are respectively connected to a pair of normally open points of the intermediate relay.
The life testing device of the electric switching device comprises a tested electric switching device power socket, wherein the tested electric switching device power socket is connected in series with a connecting wire between the tested electric switching device and an intermediate relay, and the tested electric switching device power socket is used for providing power for a control coil of the tested electric switching device.
According to the life testing device for the electric switching device, the air switch is arranged between the power supply and the first switching power supply and between the power supply and the second switching power supply, the input end of the air switch is connected with the power supply, and the output end of the air switch is connected with the input ends of the first switching power supply and the second switching power supply.
The service life testing device of the electric switching device is characterized in that the power supply is 220V alternating current single-phase power supply and is powered by adopting a plug power supply mode.
According to the life testing device for the electric switching device, the models of the first switching power supply and the second switching power supply are LRS-50-24, and the model of the HMI display control device is MT6071iP.
The beneficial effects of the utility model are as follows: the service life testing device of the electric switching device is provided with a power supply, an HMI display control device, a PLC (programmable logic controller), an intermediate relay, a first switching power supply and a second switching power supply, wherein the first switching power supply and the second switching power supply are used for converting alternating current output by the power supply into direct current and supplying power to the HMI display control device and the PLC; in this way, in the testing process, the HMI display and control device sends the testing data (comprising the opening frequency, the closing frequency and the testing time length of the device) of the tested electric switching device to the PLC controller, and the PLC controller controls the closing and the opening of the tested electric switching device through the intermediate relay so as to test the electric service life of the electric switching device; when testing electric switch devices of different types and specifications, only the intermediate relay needs to be replaced, so that the testing device has fewer workpieces, relatively simple testing operation steps and stronger universality.
Drawings
FIG. 1 is a schematic diagram of an electrical switching apparatus life test apparatus of the present utility model;
fig. 2 is a wiring diagram of the life test device for an electric switching device of the present utility model.
In the figure: 1 power supply, 2 HMI display and control device, 3 PLC controller, 4 first switching power supply, 5 second switching power supply, 6 communication connecting wire, 7 intermediate relay, 8 air switch, 9 tested electric switching device supply socket.
Description of the embodiments
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1 and 2, a schematic diagram and a wiring diagram of the life test device for an electric switching device of the present utility model are respectively provided, which are composed of a power supply 1, an HMI display control device 2, a PLC controller 3, a first switching power supply 4, a second switching power supply 5, an intermediate relay 7, an air switch 8 and a tested electric switching device power socket 9, wherein the power supply 1 provides power for the whole test device, and the tested electric switching device power socket 9 provides power for a control coil of the tested electric switching device (such as a relay and a contactor). The power supply 1 adopts 220V alternating current single-phase power supply (i.e. single-phase mains supply) and adopts a plug mode to supply power so as to adapt to various power supplies. The output of the power supply 1 is connected with the input end of the air switch 8, and the air switch 8 can realize the protection when overload and equipment ground fault occur.
The output end of the air switch 8 is connected with the input ends of the first switch power supply 4 and the second switch power supply 5, the output ends of the first switch power supply 4 and the second switch power supply 5 are respectively connected with the power input ends of the HMI display control device 2 and the PLC 3, and the first switch power supply 4 and the second switch power supply 5 convert alternating current output by the power supply 1 into direct current and respectively provide the direct current required by work for the HMI display control device 2 and the PLC 3.
The HMI display and control device 2 and the PLC 3 are connected through a communication connecting wire 6 to realize communication between the HMI display and control device 2 and the PLC 3. The HMI display control device 2 is configured to implement man-machine interaction, and send test data of a tested electric control switching device of a corresponding model to the PLC controller 3, where the PLC controller 3 controls the on/off actions of the tested electric switching device, and the test data sent by the HMI display control device 2 to the PLC controller 3 includes device opening, closing frequency and test duration information.
The PLC 3 controls the opening and closing states of the tested electric switch device through the intermediate relay 7. The PLC 3 is provided with a digital quantity input port and a digital quantity output port, two ends of a control coil of the intermediate relay 7 are connected to the digital quantity output port of the PLC 3 and a power supply ground thereof, so that when the digital quantity output port connected with the intermediate relay 7 on the PLC 3 outputs a high level, the control coil of the intermediate relay 7 is electrified, and a normally open point of the control coil is closed; when the digital output port on the PLC 3 connected with the intermediate relay 7 outputs a low level, the control coil of the intermediate relay 7 is powered off, and the normally open point of the control coil is kept in an off state.
The two ends of the control coil of the tested electric switching device are respectively connected to a pair of normally open points of the intermediate relay 7, and in order to realize the power supply to the control coil of the tested electric switching device, a tested electric switching device power socket 9 is connected in series on a connecting line between the tested electric switching device and the intermediate relay 7, so that when the normally open point connected with the tested electric switching device on the intermediate relay 7 is closed, the tested electric switching device power socket 9 can realize the power supply to the control coil of the tested electric switching device.
It can be seen that if electric switching devices of different specifications (such as different rated currents) need to be tested, the test requirements can be satisfied by only replacing the corresponding intermediate relay 7. If the AC or DC type electric switching device is required to be tested, the input power supply of the power socket 9 of the electric switching device to be tested is replaced by AC or DC, so that the service life testing device of the electric switching device has stronger universality.
The first switching power supply 4 and the second switching power supply 5 can adopt switching power supplies with model numbers of LRS-50-24, and the human-computer interaction interface with model number of the HMI display and control device 2 of MT6071iP.
Claims (5)
1. The service life testing device of the electric switching device comprises a power supply (1), an HMI display control device (2), a PLC (programmable logic controller) (3), a first switching power supply (4) and a second switching power supply (5), wherein the power supply is used for supplying alternating current, and the HMI display control device is in communication connection with the PLC through a communication connecting wire (6); the first switching power supply and the second switching power supply are used for converting alternating current output by the power supply into direct current and respectively supplying power to the HMI display control device and the PLC; the PLC is provided with a digital quantity input port and a digital quantity output port; the method is characterized in that: the PLC is connected with an intermediate relay (7), and two ends of a control coil of the intermediate relay are respectively connected to a digital quantity output port of the PLC and a power supply ground; two ends of a control coil of the tested electric switching device are respectively connected to a pair of normally open points of the intermediate relay.
2. The life testing apparatus of an electric switching device according to claim 1, wherein: the power supply device comprises a power socket (9) of the electric switching device to be tested, wherein the power socket of the electric switching device to be tested is connected in series with a connecting wire between the electric switching device to be tested and an intermediate relay (7), and the power socket of the electric switching device to be tested is used for providing power for a control coil of the electric switching device to be tested.
3. The life test apparatus for an electric switching device according to claim 1 or 2, wherein: an air switch (8) is arranged between the power supply (1) and the first switching power supply (4) and between the power supply (5) and the second switching power supply, the input end of the air switch is connected with the power supply, and the output end of the air switch is connected with the input ends of the first switching power supply and the second switching power supply.
4. The life test apparatus for an electric switching device according to claim 1 or 2, wherein: the power supply (1) is a 220V alternating current single-phase power supply and adopts a plug power supply mode to supply power.
5. A life testing apparatus of an electric switching device according to claim 3, wherein: the models of the first switching power supply (4) and the second switching power supply (5) are LRS-50-24, and the model of the HMI display control device (2) is MT6071iP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284767.9U CN220650834U (en) | 2023-08-24 | 2023-08-24 | Service life testing device for electric switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322284767.9U CN220650834U (en) | 2023-08-24 | 2023-08-24 | Service life testing device for electric switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220650834U true CN220650834U (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322284767.9U Active CN220650834U (en) | 2023-08-24 | 2023-08-24 | Service life testing device for electric switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220650834U (en) |
-
2023
- 2023-08-24 CN CN202322284767.9U patent/CN220650834U/en active Active
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