Leakage protector trial jump device and trial jump method

Abstract

The invention discloses an electric leakage protector trial jump device and trial jump method, relates to the technical field of electric leakage protectors, and solves the problem that an existing electric leakage protector trial jump device does not have a self-checking function. According to the technical scheme, a trial jump part comprises a self-recovery fuse, a power resistor and a resistor input unit; one end of the resistor input unit is connected with a first power supply contact, the other end is sequentially connected with a self-recovery fuse, a power resistor and a second power supply contact, and the first and second power supply contacts are used for accessing a loop where the leakage protector is located to perform trial jump test or accessing a self-checking part to perform device self-checking; the self-checking part comprises a battery and a prompter, one end of the prompter is connected with the first contact, the other end of the prompter is sequentially connected with the battery and the second contact, and the first and second contacts are used for connecting the first and second power contacts for device self-checking; the trial jump part and the self-checking part are arranged in the shell; through arranging a self-checking part and improving a trial jump part, device self-checking before and after trial jump test is realized.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protectors, and more specifically, to a leakage protector test tripping device and a test tripping method. Background Art

[0002] Currently, the leakage protector used in the distribution network is equipped with a test button, which triggers the tripping mechanism when the current between the phase (fire) and zero is not 0. In actual work, the staff will use the test device to simulate the leakage situation to test whether the tripping mechanism of the leakage protector will respond to the calibrated leakage current and detect whether the leakage protector is working properly. However, the test devices currently on the market usually do not have a self-test function. When the tripping mechanism does not work during the test, it is impossible to distinguish whether it is a fault of the leakage protector or a problem with the test device in the shortest time.

[0003] Therefore, the present application provides a leakage protector test tripping device and a test tripping method to solve the above problems. Summary of the invention

[0004] The purpose of the present application is to provide a leakage protector test tripping device and a test tripping method to solve the problem that the existing leakage protector test tripping device does not have a self-test function; by setting a self-test part and improving the test tripping part, the device self-test before and after the test tripping test can be achieved.

[0005] The present application first provides a leakage protector test trip device, comprising: a test trip part, a self-test part and a shell; the test trip part comprises: a resettable fuse, a power resistor and a resistor input unit, the resistor input unit comprises a plurality of fixed resistors and a plurality of input switches, the plurality of fixed resistors are connected in parallel through a plurality of input switches, one end of the resistor input unit is connected to a first power supply contact, and the other end is connected to the resettable fuse, the resettable fuse is connected to the power resistor, the power resistor is connected to a second power supply contact, the first power supply contact and the second power supply contact are used to connect to the circuit where the leakage protector is located for a test trip test, or to connect to the self-test part for device self-test; the self-test part comprises: a battery and a prompter, one end of the prompter is connected to the first contact, and the other end is connected to the battery, the battery is connected to the second contact, the first contact and the second contact are used to connect to the first power supply contact and the second power supply contact for device self-test; the test trip part and the self-test part are placed in the shell, and the first power supply contact and the second power supply contact are placed on the shell surface.

[0006] By adopting the above technical scheme, the accuracy of the trial jump part before and after the trial jump test can be ensured through the self-check part, thereby avoiding the failure of the trial jump test caused by the fault of the trial jump part; by setting a special resistance input unit, the resistance input unit can cooperate with the prompter to detect whether each path is normal during the device self-check, and the loop current can be gradually increased to the action current during the trial jump test to ensure the safety of the entire test loop.

[0007] In a possible implementation manner, the resistor input unit includes: N fixed resistors and N input switches, the N fixed resistors are connected in parallel and a corresponding input switch is connected in series to each fixed resistor.

[0008] In a possible implementation, the resistance input unit includes: three fixed resistors and three input switches, one end of the fixed resistor R1 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K1, one end of the fixed resistor R2 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K2, one end of the fixed resistor R3 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K3, and the three input switches are connected to the output end of the resistance input unit.

[0009] The present application also provides a leakage protector test tripping method, which is based on a leakage protector test tripping device as described above and includes: S1, connecting the self-test part to the test tripping part to perform device self-test; S2, analyzing the priority of fixed resistors according to the resistance values ​​of all fixed resistors, closing the switches to put the fixed resistors in turn according to the priority of fixed resistors, obtaining the number of times the indicator lights up and the brightness, and determining the state of the test tripping part; S3, when the state of the test tripping part is normal, connecting the phase line and the neutral line where the leakage protector is located to the test tripping part to perform a test tripping test; S4, obtaining the nameplate data of the leakage protector, analyzing the fixed resistor investment strategy according to the nameplate data, so that the loop current gradually increases to the operating current; S5, putting the fixed resistors into the loop in turn according to the fixed resistor investment strategy until the loop current gradually increases to the operating current.

[0010] In a possible implementation, S2 includes: S21, analyzing the priority of fixed resistors according to their resistance values; S22, placing fixed resistors into the circuit in sequence according to their priority, and recording the number of times the indicator lights up and the brightness; S23, determining the state of the trial jump part according to the number of times the indicator lights up and the brightness.

[0011] In a possible implementation, S21 includes: analyzing the resistance value of each series circuit in the resistance input unit when it is connected; determining the input priority of the fixed resistor according to the resistance value of each series circuit when it is connected, and the fixed resistors located in the same series circuit have the same input priority; and controlling the input switch to input the fixed resistors in sequence according to the input priority of the fixed resistors.

[0012] In a possible implementation manner, the greater the resistance value when the series line is connected, the higher the priority of the fixed resistor in the series line.

[0013] In a possible implementation, S23 includes: when the indicator is lit once, and the brightness of the indicator gradually increases with the input of a fixed resistance value, it indicates that the trial jump part is normal.

[0014] In a possible implementation, S4 includes: S41, extracting the operating current of the leakage protector according to the nameplate data of the leakage protector; S42, calculating the operating resistance value according to the operating current of the leakage protector and the voltage of the circuit where the leakage protector is located; S43, determining the fixed resistance to be put into operation and the order of putting into operation according to the operating resistance value, and obtaining the resistance investment strategy.

[0015] In a possible implementation, S42 includes: determining a fixed resistor combination to be put into operation according to the action resistance value and a known fixed value resistor; and putting the fixed resistor combination into the loop in order from large to small resistance.

[0016] Compared with the prior art, the present application has the following beneficial effects: the leakage protector test tripping method provided in the present application cooperates with the leakage protector test tripping device, ensures the reliability of the test tripping test through self-checking steps, provides intuitive self-checking status monitoring through the gradual input of fixed resistance and real-time feedback of the prompter, and ensures the safety and accuracy of the test tripping test by gradually increasing the loop current to the action current. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a leakage protection device test tripping device provided in an embodiment of the present application;

[0019] Figure 2 A flow chart of a leakage protector test tripping method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of the function, operation or element applied for, and does not limit the increase of one or more functions, operations or elements. In addition, as used in various embodiments of the present application, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or the possibility of increasing one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items.

[0021] In various embodiments of the present application, the expression "or" or "at least one of B or / and C" includes any combination or all combinations of the words listed at the same time. For example, the expression "B or C" or "at least one of B or / and C" may include B, may include C, or may include both B and C.

[0022] The expressions (such as "first", "second", etc.) used in the various embodiments of the present application may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0023] It should be noted that if it is described that one component element is “connected” to another component element or is “connected to” another component element, the first component element may be directly connected to the second component element, and a third component element may be “connected” between the first component element and the second component element. Conversely, when one component element is “directly connected” to another component element or is “directly connected to” another component element, it can be understood that there is no third component element between the first component element and the second component element.

[0024] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0025] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with examples and drawings. The illustrative implementation scheme of the present application and its description are only used to explain the present application and are not intended to limit the present application.

[0026] See also Figure 1 As shown, Figure 1A schematic diagram of the structure of a leakage protector test trip device provided in an embodiment of the present application. The device includes: a test trip part, a self-test part and a shell; the test trip part includes: a self-recovery insurance, a power resistor and a resistor input unit, the resistor input unit includes a plurality of fixed resistors and a plurality of input switches, the plurality of fixed resistors are connected in parallel through a plurality of input switches, one end of the resistor input unit is connected to a first power supply contact, the other end is connected to a self-recovery insurance, the self-recovery insurance is connected to a power resistor, the power resistor is connected to a second power supply contact, the first power supply contact and the second power supply contact are used to connect to the circuit where the leakage protector is located for a test trip test, or to connect to the self-test part for device self-test; the self-test part includes: a battery and a prompter, one end of the prompter is connected to a first contact, the other end is connected to a battery, the battery is connected to a second contact, the first contact and the second contact are used to connect to the first power supply contact and the second power supply contact for device self-test; the test trip part and the self-test part are placed in the shell, and the first power supply contact and the second power supply contact are placed on the surface of the shell.

[0027] Specifically, the test trip part is composed of a resettable fuse, a power resistor and a resistance input unit. The resettable fuse can prevent overcurrent from damaging related components of the device. The power resistor can ensure that the current is relatively stable within a certain period of time after the device is powered on. The resistance input unit can form resistances of various gears to meet the current requirements of the test trip test; the self-test part is composed of a battery and a prompter. The battery can provide power for the self-test of the device, and the prompter can reflect the status of the device through lights visible to the naked eye; the housing can protect the fixation of various components and external parts.

[0028] When in use, the present application can perform a self-test of the device before and after the trial jump test. Before and after the trial jump test of the leakage protector, the self-test part is connected to the trial jump part, and fixed resistors are sequentially input through the resistance input unit, and the indicator changes are observed at the same time. According to the changes in the indicator light, it is analyzed whether the trial jump part is normal. When the trial jump part is normal, the trial jump part is connected to the circuit where the leakage protector is located, and fixed resistors are sequentially input through the resistance input unit until the circuit current reaches the operating current. At this time, observe whether the leakage protector is operating and the operating time, and determine whether the leakage protector is tripped according to the specified time under the operating current.

[0029] The improvements of the present application are that, first, a self-checking part is added, through which the accuracy of the trial jump test before and after the trial jump test can be ensured, thereby avoiding the failure of the trial jump test caused by a fault in the trial jump test part; second, the self-checking part is improved, and a special resistance input unit is provided. Through the resistance input unit, whether each path is normal can be detected in conjunction with the prompter during the device self-check, and the loop current can be gradually increased to the action current during the trial jump test to ensure the safety of the entire test loop.

[0030] In addition, the test jump part uses a self-recovery fuse to avoid connecting to the wrong voltage and damaging other electronic components due to long-term power-on. Even if the self-recovery fuse is activated due to failure to operate as required, it can automatically recover after being disconnected from the power supply for a certain period of time to avoid damage to the device. The use of power resistors can maintain the current relatively stable for a certain period of time, which is beneficial to extend the power-on time and service life of the device.

[0031] Furthermore, the resistor input unit includes: N fixed resistors and N input switches, the N fixed resistors are connected in parallel and a corresponding input switch is connected in series to each fixed resistor.

[0032] Specifically, by setting N fixed resistors and N input switches, and selecting different resistor combinations by closing or opening each input switch, the requirements for the test tripping of different leakage protectors can be met. When the input switch is closed, the corresponding fixed resistor will be connected to the circuit; when the input switch is opened, the corresponding fixed resistor will be removed from the circuit. By controlling the state of each input switch, any number of fixed resistors can be selected to be connected in parallel to the circuit. The more resistors are connected in parallel, the smaller the total resistance.

[0033] Furthermore, the resistance input unit includes: three fixed resistors and three input switches, one end of the fixed resistor R1 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K1, one end of the fixed resistor R2 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K2, one end of the fixed resistor R3 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K3, and the three input switches are connected to the output end of the resistance input unit.

[0034] Specifically, each input switch K1, K2 and K3 can independently control whether the corresponding fixed resistor R1, R2 and R3 are connected to the circuit. An input switch and a fixed resistor form a series circuit. The input switch determines whether the series circuit is turned on, and the fixed resistor determines the resistance value of the series circuit. When the switch is closed, the resistor is connected to the circuit; when the switch is opened, the resistor is removed from the circuit. When multiple switches are closed at the same time, the corresponding resistors are combined in parallel.

[0035] It can be understood that the leakage protector test device provided in the present application has a self-checking function, which can ensure the accuracy of the test part before and after the test is performed, and avoid test failure caused by failure of the test part; when the device is self-checking, it can detect whether each path is normal, and during the test, it can ensure that the loop current is gradually increased to the action current, thereby ensuring the safety of the entire test loop.

[0036] See also Figure 2 As shown, Figure 2 Flow chart of the leakage protection device test tripping method provided in the embodiment of the present application. The method is based on Figure 1The leakage protector test trip device shown is carried out. The method includes: S1, connecting the self-test part to the test trip part to perform device self-test; S2, analyzing the input priority of the fixed resistors according to the resistance values ​​of all fixed resistors, closing the input switches in turn according to the input priority of the fixed resistors, obtaining the lighting times and brightness of the prompter, and determining the state of the test trip part; S3, when the state of the test trip part is normal, connecting the phase line and the neutral line where the leakage protector is located to the test trip part to perform a test trip test; S4, obtaining the nameplate data of the leakage protector, analyzing the input strategy of the fixed resistors according to the nameplate data, so that the loop current gradually increases to the action current; S5, according to the fixed resistor input strategy, the fixed resistors are sequentially input into the loop until the loop current gradually increases to the action current.

[0037] Specifically, step S1 connects the first contact and the second contact of the self-test part to the first power contact and the second power contact of the trial trip part to start the self-test program; step S2 is to turn on the fixed resistors in turn through the switch to observe the reaction of the indicator, and determine whether the trial trip part is normal according to the lighting of the indicator; step S3 is to connect the first power contact and the second power contact of the trial trip part to the phase (live) line and the neutral line where the leakage protector is located to perform a trial trip test when ensuring that the trial trip part is in a normal state; step S4 is to determine the leakage current value (operating current) that needs to be simulated for the trial trip test according to the nameplate data of the leakage protector, and determine the fixed resistor input strategy; step S5 is to turn on the fixed resistors in turn according to the strategy determined in step S4, gradually increase the current in the circuit until the designed operating current of the leakage protector is reached, observe whether the leakage protector can correctly respond to the leakage situation within the expected time to disconnect the circuit, and obtain the trial trip result of the leakage protector.

[0038] The improvement of the present application lies in that, by adding a self-check step before and after the trial jump test, the trial jump failure caused by the fault of the trial jump test device is eliminated, thereby ensuring the reliability of the trial jump test result; by gradually increasing the input resistance to simulate the situation where the actual leakage current gradually increases, the accuracy and safety of the trial jump test can be ensured.

[0039] In a possible implementation, step S2 is to input a fixed resistor by inputting a switch, obtain the number of times the indicator is lit and the brightness, and determine the state of the trial jump part; including: S21, analyzing the priority of the fixed resistor according to the resistance value of the fixed resistor; S22, inputting the fixed resistor into the circuit in sequence according to the input priority, and recording the number of times the indicator is lit and the brightness; S23, determining the state of the trial jump part according to the number of times the indicator is lit and the brightness.

[0040] Specifically, step S21 is to determine the order of each resistor according to the resistance value of the fixed resistor, with the priority based on the resistance value from large to small, to ensure that the leakage current in the loop gradually increases; step S22 is to put the fixed resistors into the loop in sequence through the input switch according to the priority determined in step S21, and observe and record the brightness of the indicator when each resistor is put in; step S23 is when the number of times the indicator lights up and the brightness are consistent with expectations, indicating that the test jump part is working normally. Step S2 ensures that the test jump part is normal before the formal test jump test by gradually putting in fixed resistors of different resistance values ​​and observing the reaction of the indicator, thereby ensuring the safety and accuracy of the subsequent test jump test.

[0041] Further, step S21 analyzes the input priority of the fixed resistor according to the resistance value of the fixed resistor; including: analyzing the resistance value of each series line in the resistor input unit when it is connected; determining the input priority of the fixed resistor according to the resistance value of each series line when it is connected, and the fixed resistors on the same series line have the same input priority; and controlling the input switch to input the fixed resistors in sequence according to the input priority of the fixed resistor. Further, the greater the resistance value when the series line is connected, the higher the input priority of the fixed resistor on the series line.

[0042] Specifically, step S21 is to ensure that the loop current is gradually increased to the designed operating current of the leakage protector. The series circuits in the resistance input unit are analyzed, and the resistance values ​​of all fixed resistors on the circuit are added up to calculate the total resistance value when each series circuit is connected; according to the total resistance value of each series circuit, the priority of fixed resistor input is determined, and the circuit with the largest resistance value should be put into operation first, and the fixed resistance value on it has a higher priority; according to the determined priority, the input switch is controlled to input fixed resistors in sequence to avoid sudden increase of current and ensure the accuracy and safety of the test process.

[0043] Further, S23 includes: when the indicator is lit once, and the brightness of the indicator gradually increases with the input of a fixed resistance value, it indicates that the test jump part is normal.

[0044] Specifically, when a series circuit is turned on, the indicator lights up. After that, as more fixed resistors are added, the resistance of the loop gradually decreases, and the return current gradually increases, so the brightness of the indicator will gradually increase. By gradually adding resistors and observing the reaction of the indicator, it is possible to effectively verify whether the state of the test jump part is normal, ensuring that the circuit is connected normally before the formal test jump test.

[0045] In a possible implementation, step S4 obtains the nameplate data of the leakage protector, and analyzes the fixed resistor investment strategy based on the nameplate data; including: S41, extracting the operating current of the leakage protector based on the nameplate data of the leakage protector; S42, calculating the operating resistance value based on the operating current of the leakage protector and the voltage of the circuit where the leakage protector is located; S43, determining the fixed resistors to be invested and the order of investment based on the operating resistance value, and obtaining the resistor investment strategy. Further, S42 includes: determining the fixed resistor combination to be invested based on the operating resistance value and the known fixed value resistor; and investing the fixed resistor combination in the circuit in order from large to small resistance.

[0046] Specifically, the rated operating current, such as 30mA, 50mA, etc., is obtained from the nameplate of the leakage protector; the operating resistance value is calculated using Ohm's law V=I×R, where V is the circuit voltage of the leakage protector and I is the operating current of the leakage protector; the fixed resistor combination that needs to be put into operation is determined based on the calculated operating resistance value, and the fixed resistor with the larger resistance value in the fixed resistor combination is put into the circuit first. The fixed resistors are put into the circuit in order from large to small, which can gradually increase the circuit current until the operating current is reached.

[0047] It can be understood that the leakage protector test tripping method provided in the present application cooperates with the leakage protector test tripping device to ensure the reliability of the test tripping test through self-checking steps, provides intuitive self-checking status monitoring through the gradual input of fixed resistance and real-time feedback of the prompter, and ensures the safety and accuracy of the test tripping test by gradually increasing the loop current to the operating current.

[0048] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A leakage protector test tripping device, characterized in that: include: Trial part, self-test part and shell; The test trip part includes: a self-recovery fuse, a power resistor and a resistor input unit, the resistor input unit includes a plurality of fixed resistors and a plurality of input switches, the plurality of fixed resistors are connected in parallel through the plurality of input switches, one end of the resistor input unit is connected to a first power supply contact, and the other end is connected to a self-recovery fuse, the self-recovery fuse is connected to a power resistor, the power resistor is connected to a second power supply contact, the first power supply contact and the second power supply contact are used to connect to the circuit where the leakage protector is located for a test trip test, or to connect to the self-test part for device self-test; The self-test part includes: a battery and a reminder, one end of the reminder is connected to a first contact, and the other end is connected to a battery, the battery is connected to a second contact, and the first contact and the second contact are used to connect the first power supply contact and the second power supply contact to perform device self-test; The test jump part and the self-test part are placed in the shell, and the first power supply contact point and the second power supply contact point are placed on the surface of the shell.

2. A leakage protection device test tripping device according to claim 1, characterized in that: The resistor input unit includes: N fixed resistors and N input switches, the N fixed resistors are connected in parallel and each of the fixed resistors is connected in series with a corresponding input switch.

3. A leakage protection device test tripping device according to claim 2, characterized in that: The resistance input unit includes: three fixed resistors and three input switches, one end of the fixed resistor R1 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K1, one end of the fixed resistor R2 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K2, one end of the fixed resistor R3 is connected to the input end of the resistance input unit, and the other end is connected to the input switch K3, and the three input switches are connected to the output end of the resistance input unit.

4. A leakage protection device test trip method, characterized in that: The method is performed based on a leakage protector test tripping device according to any one of claims 1 to 3, comprising: S1. Connect the self-test part to the test jump part to perform device self-test; S2. Analyze the priority of fixed resistors according to the resistance values ​​of all fixed resistors, close the switches in turn according to the priority of fixed resistors, obtain the lighting times and brightness of the indicator, and determine the state of the test jump part; S3. When the state of the test tripping part is normal, connect the phase line and the neutral line where the leakage protector is located to the test tripping part to perform a test tripping test; S4, obtaining the nameplate data of the leakage protector, and analyzing the fixed resistor input strategy according to the nameplate data, so that the loop current gradually increases to the operating current; S5. According to the fixed resistor input strategy, the fixed resistors are sequentially input into the circuit until the circuit current gradually increases to the operating current.

5. A leakage protection device test tripping method according to claim 4, characterized in that S2 include: S21, analyzing the input priority of the fixed resistors according to the resistance values ​​of the fixed resistors; S22, according to the priority of input, the fixed resistors are sequentially input into the circuit, and the lighting times and brightness of the indicator are recorded; S23. Determine the state of the trial jump part according to the lighting times and brightness of the prompter.

6. A leakage protection device test tripping method according to claim 5, characterized in that: S21 includes: Analyze the resistance value of each series circuit in the resistance input unit when it is connected; The priority of the fixed resistors is determined according to the resistance value of each series circuit when it is connected, and the fixed resistors on the same series circuit have the same priority of input; The fixed resistors are switched on in sequence by controlling the switches according to the switching-on priorities of the fixed resistors.

7. A leakage protection device test tripping method according to claim 6, characterized in that: The greater the resistance value of the series line when connected, the higher the priority of the fixed resistor on the series line.

8. A leakage protection device test tripping method according to claim 5, characterized in that: S23 includes: when the indicator is lit once, and the brightness of the indicator gradually increases with the input of a fixed resistance value, it indicates that the test jump part is normal.

9. A leakage protection device test tripping method according to claim 4, characterized in that S4 include: S41, extracting the operating current of the leakage protector according to the nameplate data of the leakage protector; S42, calculating the operating resistance value according to the operating current of the leakage protector and the voltage of the circuit where the leakage protector is located; S43. Determine the fixed resistors to be put into operation and the order of putting them into operation according to the action resistance value, and obtain the strategy for putting the resistors into operation.

10. A leakage protection device test tripping method according to claim 9, characterized in that: S42 includes: Determine the fixed resistance combination to be put into operation based on the action resistance value and the known fixed resistance value; Put the fixed resistor combination into the circuit in descending order of resistance.

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