Test system and method of leakage protector

Abstract

The invention provides a test system and method of a leakage protector. The test system of the leakage protector comprises a power supply device, a control device, a leakage signal generation device and a plurality of electromagnetic switches. The control panel of the leakage protector can be tested, and the electromagnetic switch is arranged to obtain the action signal output by the control panel, so that the control device can determine the leakage protection capability of the corresponding control panel based on the switching signal fed back by the electromagnetic switch based on the action signal. Firstly, the control panel is used as the core of the leakage protector, the control panel is directly tested, interference of other peripheral hardware can be eliminated, and the test efficiency of the core is improved; besides, for each control panel, only one electromagnetic switch is needed to realize the transmission of the action signal, and a plurality of electromagnetic switches are arranged, so that the parallel test of a plurality of control panels can be realized at low cost, and the overall test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage protection, and in particular to a testing system and method for a leakage protector. Background Art

[0002] In the production test of the leakage protector, the tripping and power-off function of the leakage protector needs to be tested. In the prior art, the complete leakage protector is usually connected to the actual power line and a standard leakage current is applied to the power line, so as to judge its leakage protection capability according to whether the leakage protector trips and powers off.

[0003] However, existing testing solutions are not effective. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a testing system and method for a leakage protector.

[0005] In a first aspect, in one embodiment, the present invention provides a test system for a leakage protector, the test system for the leakage protector comprising a power supply device, a control device, a leakage signal generating device, and a plurality of electromagnetic switches;

[0006] The power supply device is electrically connected to the control device and the power supply terminals of the control boards of the plurality of leakage protectors to be tested, respectively, and is used to output the target power to each control board respectively under the control of the control device;

[0007] The coil part of each electromagnetic switch is electrically connected to the trip coil access terminal of the corresponding control board, and the switch part of each electromagnetic switch is electrically connected to the control device, and is used to output a switch signal to the control device according to the action signal output by the corresponding control board;

[0008] The leakage signal generating device is electrically connected to the control device and the mutual inductor access terminal of each control board respectively, and is used to output the target leakage signal to each control board respectively under the control of the control device;

[0009] The control device is used to determine the leakage protection capability of each control board according to the switch signal fed back by each electromagnetic switch.

[0010] In one embodiment, the electromagnetic switch comprises a relay.

[0011] In one embodiment, the test system for the residual current protector further includes a switch device;

[0012] The switch device is electrically connected to the control device, the power supply device and the power supply terminal of each control board respectively, and is used to connect the line between the power supply device and the power supply terminal of each control board under the control of the control device.

[0013] In one embodiment, the switch device comprises a plurality of switch units;

[0014] Each switch unit is electrically connected to the control device, the power supply device and the power supply terminal of the corresponding control board respectively, and is used to connect the line between the power supply device and the power supply terminal of the corresponding control board under the control of the control device.

[0015] In one embodiment, the control device includes a control module and a host computer, and the test system of the leakage protector also includes a switch quantity acquisition module;

[0016] The switch quantity acquisition module is electrically connected to each switch unit and the host computer respectively, and is used to collect the switch signal of each switch unit and feed it back to the host computer;

[0017] The control module is electrically connected to each switch unit, the switch part of each electromagnetic switch and the host computer respectively, and is used to control each switch unit to close under the control of the host computer, and to control the corresponding switch unit to open when receiving the switch signal fed back by the electromagnetic switch indicating that the corresponding control board performs tripping;

[0018] The host computer is electrically connected to the leakage signal generating device and the power supply device respectively, and is used to control the leakage signal generating device and the power supply device respectively, and to determine the leakage protection capability of the corresponding control board according to the switch signal fed back by the switch quantity acquisition module.

[0019] In one embodiment, the switching unit comprises a contactor.

[0020] In one embodiment, the leakage signal generating device includes a leakage current generating module, a current loop and a plurality of current transformers;

[0021] The input end of the leakage current generating module is electrically connected to the control device, and the output end of the leakage current generating module is connected in series with the current loop, so as to output the target leakage current to the current loop under the control of the control device;

[0022] Each current transformer is electrically connected to a transformer access terminal of a corresponding control board, and is respectively used to be mounted on a current loop and output a target leakage signal to the corresponding control board.

[0023] In one embodiment, the test system of the leakage protector further includes an analog quantity acquisition module;

[0024] The analog quantity acquisition module is electrically connected to the control device and the DC power supply terminal of each control board respectively, and is used to collect the DC voltage of each control board and feed it back to the control device.

[0025] In a second aspect, in one embodiment, the present invention provides a method for testing a leakage protector, which is applied to a test system for a leakage protector in any of the above embodiments; the method for testing a leakage protector comprises the following steps performed by a control device:

[0026] The control power supply device outputs target power to each control board respectively;

[0027] The control leakage signal generating device outputs a target leakage signal to each control board respectively, so that each control board performs leakage protection;

[0028] Acquire a switch signal fed back by each electromagnetic switch based on an action signal of a corresponding control board;

[0029] The leakage protection capability of each control board is determined according to the switch signal fed back by each electromagnetic switch.

[0030] In one embodiment, the test system of the leakage protector further includes a switch device, the control device includes a control module and a host computer, and the test system of the leakage protector further includes a switch quantity acquisition module; the test method of the leakage protector specifically includes the following steps performed by the host computer:

[0031] Control each switch unit to close through the control module, so that the power supply device outputs the target power to each control board through each switch unit;

[0032] The control leakage signal generating device outputs a target leakage signal to each control board respectively, so that each control board performs leakage protection;

[0033] The switch signal of each switch unit collected by the switch quantity collection module is obtained; the control module is used to control the corresponding switch unit to disconnect when the switch signal fed back by the electromagnetic switch indicates that the corresponding control board performs tripping;

[0034] According to the switch signal fed back by the switch quantity acquisition module, the leakage protection capability of the corresponding control board is determined.

[0035] Through the above-mentioned leakage protector test system and method, the control board of the leakage protector can be tested, and an electromagnetic switch is set to obtain the action signal output by the control board, so that the control device can determine the leakage protection capability of the corresponding control board based on the switch signal fed back by the electromagnetic switch based on the action signal. First of all, the control board is the core of the leakage protector. Directly testing the control board itself can eliminate the interference of other peripheral hardware and improve the test efficiency of the core; in addition, for each control board, only one electromagnetic switch is required to realize the transmission of its action signal. By setting multiple electromagnetic switches, multiple control boards can be tested in parallel at a low cost, which improves the overall test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic diagram of the structure of a test system for a leakage protector according to an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of a structure including a switch device in one embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of a specific structure of a control device and a switch quantity acquisition module in one embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the structure of an analog quantity acquisition module in one embodiment of the present invention;

[0041] Figure 5 The figure is a schematic diagram of the specific structure of a test system for a specific control board in one embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In the present application, the word "exemplary" is used to mean "used as an example, illustration or description". Any embodiment described as "exemplary" in the present application is not necessarily interpreted as being more preferred or more advantageous than other embodiments. In order to enable any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that those of ordinary skill in the art will recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present invention obscure. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in this application.

[0044] First, as Figure 1 As shown, in one embodiment, the present invention provides a test system for a leakage protector, the test system for the leakage protector comprising a power supply device, a control device, a leakage signal generating device and a plurality of electromagnetic switches.

[0045] The power supply device is electrically connected to the control device and the power supply terminals of the control boards of the plurality of leakage protectors to be tested, respectively, and is used to output target power to each control board respectively under the control of the control device.

[0046] Among them, the complete leakage protector includes a control board and corresponding peripheral hardware, including a current transformer, a release, and a switch tube (such as a MOS tube, a thyristor, etc.) that controls the on and off of the circuit where the release is located. The control board is connected to the target power supply output by the power supply device through its integrated power circuit. The power circuit processes the target power supply to obtain the working voltage required by the integrated control chip and the acquisition circuit. The acquisition circuit in the control board can collect the voltage on the connected current transformer and feed it back to the control chip. The control chip judges the collection voltage. If the collection voltage is too large, it is determined that the corresponding leakage current is too large, and thus outputs a drive signal to the switch tube to turn on the switch tube. Since the tripping coil of the release is connected to the control board and connected to the corresponding coil drive voltage, when the switch tube is turned on, the connected coil drive voltage forms a current loop to the ground through the tripping coil and the switch tube, thereby triggering the tripping operation to achieve leakage protection.

[0047] The leakage signal generating device is electrically connected to the control device and the mutual inductor access terminal of each control board respectively, and is used to output the target leakage signal to each control board respectively under the control of the control device.

[0048] Among them, the control board can access the corresponding collection voltage and make a protection judgment on the leakage current. Therefore, the leakage signal generating device is used to simulate and generate the standard collection voltage when the control board performs leakage protection, and output it to the control board as the target leakage signal. When the powered-on control board accesses the target leakage signal through its transformer access terminal, if its leakage protection capability is normal, it can output an action signal representing the tripping.

[0049] The coil part of each electromagnetic switch is electrically connected to the trip coil access terminal of the corresponding control board, and the switch part of each electromagnetic switch is electrically connected to the control device, and is used to output a switch signal to the control device according to the action signal output by the corresponding control board.

[0050] Among them, it has been mentioned above that the control board can be electrically connected to the trip coil in practice to output the coil driving voltage thereto, and in this embodiment, an electromagnetic switch is used for access, and the coil part of the electromagnetic switch is electrically connected to the trip coil access end of the control board, so that the coil part of the electromagnetic switch can access the coil driving voltage. At this time, in the control board, if the control board triggers the leakage current protection, its control chip will drive the switch tube connected in series with the trip coil access end to turn on, thereby generating a driving current on the coil part of the electromagnetic switch. At this time, the action signal output by the control board can be understood as "controlling the circuit where the coil part of the electromagnetic switch is located to turn on", and the switch part of the electromagnetic switch performs the corresponding switching action, thereby feeding back the corresponding switch signal to the control device, such as a disconnection signal. If one end of the switch part of the electromagnetic switch is connected to the working voltage and the other end is electrically connected to the control device, then the switch signal at this time is specifically expressed as "low level".

[0051] The control device is used to determine the leakage protection capability of each control board according to the switch signal fed back by each electromagnetic switch.

[0052] Among them, through the above analysis, it can be known that after the target leakage signal is input to each control board respectively, if the leakage protection capability of the control board is normal, it can output an action signal that causes the coil part of the electromagnetic switch to generate a coil driving current, so that the electromagnetic switch can feedback the corresponding switch signal (such as a low level) to the control device; on the contrary, if the leakage protection capability of the control board is abnormal, it cannot output an action signal that causes the coil part of the electromagnetic switch to generate a coil driving current, so that the electromagnetic switch can feedback the corresponding switch signal (such as a high level) to the control device; it can be seen that the leakage protection capability of the control board determines the switch signal that the electromagnetic switch feeds back to the control device, and ultimately enables the control device to determine the leakage protection capability of each control board based on the switch signal fed back by the electromagnetic switch.

[0053] Through the above-mentioned leakage protector test system, the control board of the leakage protector can be tested, and an electromagnetic switch is set to obtain the action signal output by the control board, so that the control device can determine the leakage protection capability of the corresponding control board based on the switch signal fed back by the electromagnetic switch based on the action signal. First of all, the control board is the core of the leakage protector. Directly testing the control board itself can eliminate the interference of other peripheral hardware and improve the test efficiency of the core; in addition, for each control board, only one electromagnetic switch is required to realize the transmission of its action signal. By setting multiple electromagnetic switches, multiple control boards can be tested in parallel at a low cost, which improves the overall test efficiency.

[0054] In one embodiment, the electromagnetic switch comprises a relay.

[0055] In other embodiments, the electromagnetic switch may also be of other specific types, such as a contactor.

[0056] like Figure 2 As shown, in one embodiment, the test system for the residual current protector further includes a switch device.

[0057] The switch device is electrically connected to the control device, the power supply device and the power supply terminal of each control board respectively, and is used to connect the line between the power supply device and the power supply terminal of each control board under the control of the control device.

[0058] Among them, the additional switching device can ensure the power supply reliability of each control board during the test. When an abnormal situation occurs, the control board can be automatically and promptly powered off through the switching device.

[0059] like Figure 2 As shown, in one embodiment, the switch device includes a plurality of switch units.

[0060] Each switch unit is electrically connected to the control device, the power supply device and the power supply terminal of the corresponding control board respectively, and is used to connect the line between the power supply device and the power supply terminal of the corresponding control board under the control of the control device.

[0061] During the test, there may be some abnormalities in the test circuits where some control boards are located, while other test circuits are normal. If all control boards are powered off directly, the control boards with normal test circuits will not be able to continue the test. Therefore, in this embodiment, a corresponding switch unit is set for each control board. When the test circuits where some control boards are located are abnormal, it is only necessary to control the corresponding switch unit to be disconnected, so that only the control board with the abnormality is powered off, which can ensure that the other normal control boards can continue to complete the test.

[0062] like Figure 3 As shown, in one embodiment, the control device includes a control module and a host computer, and the test system of the leakage protector also includes a switch quantity acquisition module.

[0063] The control module may be a control repeater integrating multi-channel control logic, and the host computer may be an industrial computer.

[0064] The switch quantity acquisition module is electrically connected to each switch unit and the host computer respectively, and is used to collect the switch signal of each switch unit and feed it back to the host computer.

[0065] The control module is electrically connected to each switch unit, the switch part of each electromagnetic switch and the host computer respectively, and is used to control each switch unit to close under the control of the host computer, and to control the corresponding switch unit to open when the switch signal fed back by the electromagnetic switch indicates that the corresponding control board executes tripping.

[0066] Among them, the control module can adjust the driving signal output to the corresponding switch unit based on the switching signal fed back by the electromagnetic switch. For example, when the control module receives the switching signal fed back by the electromagnetic switch, which indicates that the leakage protection capability of the corresponding control board is normal, it adjusts the driving signal output to the corresponding switch unit from indicating closure to indicating disconnection. At this time, the corresponding switch unit is disconnected, the corresponding control board is powered off, and the test ends.

[0067] The host computer is electrically connected to the leakage signal generating device and the power supply device respectively, and is used to control the leakage signal generating device and the power supply device respectively, and to determine the leakage protection capability of the corresponding control board according to the switch signal fed back by the switch quantity acquisition module.

[0068] Among them, it has been mentioned above that when the control board is tested, the power supply device has been powered by closing the switch unit, and when the control board outputs an action signal indicating that the leakage protection capability is normal, the corresponding electromagnetic switch can output a corresponding switch signal to trigger the control module to adjust the drive signal of the corresponding switch unit, thereby disconnecting the corresponding switch unit. At this time, the switch signal collected by the switch quantity acquisition module for the switch unit changes from closed to open, and finally the host computer can determine that the corresponding control board has completed the test and its leakage protection capability is normal based on this change.

[0069] In one embodiment, the switching unit comprises a contactor.

[0070] In other embodiments, the switch unit may also be of other specific types, such as electromagnetic switches such as relays, or semiconductor switches such as MOS tubes, thyristors, and IGBT tubes.

[0071] In one embodiment, the leakage signal generating device includes a leakage current generating module, a current loop and a plurality of current transformers.

[0072] The input end of the leakage current generating module is electrically connected to the control device, and the output end of the leakage current generating module is connected in series with the current loop, so as to output the target leakage current to the current loop under the control of the control device.

[0073] Among them, the leakage current generating module can output leakage currents of various current sizes to the current loop, and under the control of the control device, it can be dynamically adjusted according to the specifications of the control board actually being tested. For example, for a leakage protector used in a large leakage current protection scenario, the leakage current threshold required for leakage protection of its control board is relatively large. At this time, the leakage current generating module can output a relatively large leakage current under the control of the control device, and use it as the target leakage current of the control board.

[0074] Each current transformer is electrically connected to a transformer access terminal of a corresponding control board, and is respectively used to be mounted on a current loop and output a target leakage signal to the corresponding control board.

[0075] Among them, a corresponding current transformer is configured for each control board to avoid signal interference between multiple control boards, so as to ensure that each control board can be connected to a more accurate collection voltage to improve the test accuracy of the leakage protection capability.

[0076] like Figure 4 As shown, in one embodiment, the test system of the leakage protector also includes an analog quantity acquisition module.

[0077] The analog quantity acquisition module is electrically connected to the control device and the DC power supply terminal of each control board respectively, and is used to collect the DC voltage of each control board and feed it back to the control device.

[0078] Among them, in addition to determining whether to perform the tripping operation based on the collected voltage connected, the control board is also responsible for the DC power supply of each device in the leakage protector. The reliability of its DC power supply determines the performance of the entire leakage protector. Therefore, in this embodiment, a corresponding analog quantity acquisition module is added to the test system, which is used to collect the DC voltage of each control board and feed it back to the control device, so that the control device can determine whether the DC power supply of each control board is normal based on the feedback of the analog quantity acquisition module, thereby improving the test diversity of the control board.

[0079] In addition, when the DC power supply of the control board is synchronously tested, if it is subsequently detected that the leakage protection capability of the control board is abnormal, but the DC power supply is normal, it can be further ruled out that the cause of the abnormal leakage protection capability is not caused by the DC power supply, thereby improving the test depth of the leakage protection capability.

[0080] In a second aspect, in one embodiment, the present invention provides a method for testing a leakage protector, which is applied to a test system for a leakage protector in any of the above embodiments; the method for testing a leakage protector comprises the following steps performed by a control device:

[0081] The control power supply device outputs target power to each control board respectively;

[0082] The control leakage signal generating device outputs a target leakage signal to each control board respectively, so that each control board performs leakage protection;

[0083] Acquire a switch signal fed back by each electromagnetic switch based on an action signal of a corresponding control board;

[0084] The leakage protection capability of each control board is determined according to the switch signal fed back by each electromagnetic switch.

[0085] The leakage protector test system applied by the leakage protector test method described above can test the control board of the leakage protector, and set an electromagnetic switch to obtain the action signal output by the control board, so that the control device can determine the leakage protection capability of the corresponding control board based on the switch signal fed back by the electromagnetic switch based on the action signal. First of all, the control board, as the core of the leakage protector, directly tests the control board itself, which can eliminate the interference of other peripheral hardware and improve the test efficiency of the core; in addition, for each control board, only one electromagnetic switch is required to realize the transmission of its action signal. By setting multiple electromagnetic switches, multiple control boards can be tested in parallel at a low cost, which improves the overall test efficiency.

[0086] In one embodiment, the test system of the leakage protector further includes a switch device, the control device includes a control module and a host computer, and the test system of the leakage protector further includes a switch quantity acquisition module; the test method of the leakage protector specifically includes the following steps performed by the host computer:

[0087] Control each switch unit to close through the control module, so that the power supply device outputs the target power to each control board through each switch unit;

[0088] The control leakage signal generating device outputs a target leakage signal to each control board respectively, so that each control board performs leakage protection;

[0089] The switch signal of each switch unit collected by the switch quantity collection module is obtained; the control module is used to control the corresponding switch unit to disconnect when the switch signal fed back by the electromagnetic switch indicates that the corresponding control board performs tripping;

[0090] According to the switch signal fed back by the switch quantity acquisition module, the leakage protection capability of the corresponding control board is determined.

[0091] In order to make the above embodiments clearer, the above embodiments are now described in combination. Figure 5 As shown, in one embodiment, taking a leakage protection test of a leakage protector applied to single-phase electricity as an example, its control board includes a first trip coil access terminal KA1, a second trip coil access terminal KA2, a first power supply terminal L, a second power supply terminal N, a first transformer access terminal TA1, a second transformer access terminal TA2, a first DC power supply terminal VCC and a second DC power supply terminal GND.

[0092] Among them, the first trip coil access terminal KA1 and the second trip coil access terminal KA2 of the control board are electrically connected to the control module through a relay, the first transformer access terminal TA1 and the second transformer access terminal TA2 of the control board are electrically connected to the current transformer, the first power supply terminal L and the second power supply terminal N of the control board are electrically connected to the power supply device through a contactor, and the first DC power supply terminal VCC and the second DC power supply terminal GND of the control board are electrically connected to the analog quantity acquisition module.

[0093] In addition, the power supply device, the switch quantity acquisition module, the analog quantity acquisition module, the leakage current generation module and the control module are also electrically connected to the host computer to feed back data to the host computer or be controlled by the host computer.

[0094] In this embodiment:

[0095] Step 1: The host computer first controls the contactor to close and controls the power supply device to output a suitable target power through the control module, so that the target power can be output to the first power terminal L and the second power terminal N of the control board through the contactor.

[0096] Step 2: After the control board is powered on, the host computer controls the leakage current generating module to output the target leakage current to the current loop where the current transformer is located, so that the current transformer can output the corresponding collection voltage to the first transformer access terminal TA1 and the second transformer access terminal TA2 of the control board based on the magnetic field coupling of the target leakage current.

[0097] Step 3: After the control board makes a leakage current protection judgment based on the collected voltage, if the control board outputs an action signal indicating that the leakage protection capability is normal through the first trip coil access terminal KA1 and the second trip coil access terminal KA2, the relay is powered off and feeds back a switch signal of the first state to the control module; if the control board outputs an action signal indicating that the leakage protection capability is abnormal through the first trip coil access terminal KA1 and the second trip coil access terminal KA2, the relay remains powered on and feeds back a switch signal of the second state to the control module.

[0098] Step 4: If the control module is connected to the switch signal of the first state, the control contactor is disconnected; if the control module is connected to the switch signal of the second state, the control contactor is kept closed.

[0099] Step 5: If the contactor is disconnected, the switch quantity acquisition module feeds back a switch signal representing the disconnection to the upper computer; if the contactor remains closed, the switch quantity acquisition module feeds back a switch signal representing the closure to the upper computer.

[0100] Step 6: If the host computer is connected to a switch signal representing a disconnection, it is determined that the leakage protection capability of the control board is normal; if the host computer is connected to a switch signal representing a closure, it is determined that the leakage protection capability of the control board is abnormal.

[0101] Step 7: Complete the leakage protection test.

[0102] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0103] The above is a detailed introduction to the testing system and method for the leakage protector provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0104] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A test system for a leakage protector, characterized in that: The test system of the leakage protector comprises a power supply device, a control device, a leakage signal generating device and a plurality of electromagnetic switches; The power supply device is electrically connected to the control device and the power supply terminals of the control boards of the plurality of leakage protectors to be tested, respectively, and is used to output the target power to each of the control boards respectively under the control of the control device; The coil part of each electromagnetic switch is electrically connected to the trip coil access terminal of the corresponding control board, and the switch part of each electromagnetic switch is electrically connected to the control device, and is used to output a switch signal to the control device according to the action signal output by the corresponding control board; The leakage signal generating device is electrically connected to the control device and the transformer access terminal of each control board respectively, and is used to output the target leakage signal to each control board respectively under the control of the control device; The control device is used to determine the leakage protection capability of each control board according to the switch signal fed back by each electromagnetic switch.

2. The test system for leakage protection device according to claim 1, characterized in that: The electromagnetic switch includes a relay.

3. The test system for leakage protection device according to claim 1, characterized in that: The test system of the leakage protector also includes a switch device; The switch device is electrically connected to the control device, the power supply device and the power supply terminal of each control board respectively, and is used to connect the line between the power supply device and the power supply terminal of each control board under the control of the control device.

4. The test system for leakage protection device according to claim 3, characterized in that: The switch device comprises a plurality of switch units; Each of the switch units is electrically connected to the control device, the power supply device and the power supply terminal of the corresponding control board, and is used to connect the line between the power supply device and the power supply terminal of the corresponding control board under the control of the control device.

5. The test system for leakage protection device according to claim 4, characterized in that: The control device includes a control module and a host computer, and the test system of the leakage protector also includes a switch quantity acquisition module; The switch quantity acquisition module is electrically connected to each of the switch units and the host computer respectively, and is used to collect the switch signal of each of the switch units and feed it back to the host computer; The control module is electrically connected to each of the switch units, the switch part of each of the electromagnetic switches and the host computer respectively, and is used to control each of the switch units to close under the control of the host computer, and to control the corresponding switch unit to open when receiving a switch signal fed back by the electromagnetic switch indicating that the corresponding control board performs tripping; The host computer is electrically connected to the leakage signal generating device and the power supply device respectively, and is used to control the leakage signal generating device and the power supply device respectively, and to determine the leakage protection capability of the corresponding control board according to the switch signal fed back by the switch quantity acquisition module.

6. The test system for leakage protection device according to claim 4, characterized in that: The switch unit includes a contactor.

7. The test system for leakage protection device according to claim 1, characterized in that: The leakage signal generating device comprises a leakage current generating module, a current loop and a plurality of current transformers; The input end of the leakage current generating module is electrically connected to the control device, and the output end of the leakage current generating module is connected in series with the current loop, so as to output the target leakage current to the current loop under the control of the control device; Each of the current transformers is electrically connected to a transformer access terminal of a corresponding control board, and is respectively used to be mounted on the current loop and output a target leakage signal to the corresponding control board.

8. The test system for leakage protection device according to any one of claims 1 to 7, characterized in that: The test system of the leakage protector also includes an analog quantity acquisition module; The analog quantity acquisition module is electrically connected to the control device and the DC power supply end of each control board respectively, and is used to collect the DC voltage of each control board and feed it back to the control device.

9. A method for testing a leakage protector, characterized in that: The test method of the leakage protector is applied to the test system of the leakage protector according to any one of claims 1 to 8; the test method of the leakage protector comprises the following steps performed by a control device: Controlling the power supply device to output target power to each of the control boards respectively; Controlling the leakage signal generating device to output a target leakage signal to each of the control boards respectively, so that each of the control boards performs leakage protection; Acquire a switch signal fed back by each electromagnetic switch based on an action signal of a corresponding control board; The leakage protection capability of each control board is determined according to the switch signal fed back by each electromagnetic switch.

10. The method for testing a leakage protector according to claim 9, characterized in that: The test system of the leakage protector further includes a switch device, the control device includes a control module and a host computer, and the test system of the leakage protector further includes a switch quantity acquisition module; the test method of the leakage protector specifically includes the following steps performed by the host computer: Controlling each of the switch units to close through the control module, so that the power supply device outputs target power to each of the control boards through each of the switch units; Controlling the leakage signal generating device to output a target leakage signal to each of the control boards respectively, so that each of the control boards performs leakage protection; Acquire the switch signal of each switch unit collected by the switch quantity collection module; The control module is used to control the corresponding switch unit to disconnect when receiving the switch signal fed back by the electromagnetic switch indicating that the corresponding control board performs tripping; The leakage protection capability of the corresponding control board is determined according to the switch signal fed back by the switch quantity acquisition module.

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