Auxiliary device and system for dolly switching characteristic test

Abstract

The utility model relates to an auxiliary device and system for a trolley switch characteristic test, and relates to the technical field of high-voltage circuit breakers, a trolley switch is used for being connected between a generator set and a power supply system, so that the power supply system supplies power to the generator set, and the auxiliary device comprises an aviation plug female head (110) and an opening and closing jack (120); the aviation plug female head (110) is electrically connected with the opening and closing jack (120); the aviation plug female head (110) is used for being electrically connected with an aviation plug male head of a dolly switch. The opening and closing jack (120) is used for being electrically connected with a dolly switch characteristic tester, and the dolly switch characteristic tester is at least used for carrying out an opening and closing test on the dolly switch according to the auxiliary device. The efficiency and the safety of the trolley switching characteristic test can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of high-voltage circuit breakers, and in particular to an auxiliary device and system for a trolley switch characteristic test. Background Art

[0002] In the auxiliary power system, the 10kV trolley switch plays a critical role in connecting the circuits between the generator sets and the auxiliary power system. To ensure the safety and reliability of the auxiliary power system, the 10kV trolley switch must undergo characteristic tests to verify that it meets operational requirements. These tests help identify potential quality issues and enable timely repairs and adjustments, thereby ensuring the reliability and stability of the trolley switch during operation and, ultimately, the normal operation of the auxiliary power system.

[0003] However, when conducting mechanical characteristic tests and DC resistance measurements on trolley switches, the problem of long time consumption is often faced. The main reasons are as follows. (1) If the test is performed on the trolley switch cabinet, it is necessary to disconnect the circuit wiring of the closing, tripping, energy storage motor power supply, locking contacts, etc., which takes a long time. Rewiring and inspection will also take up extra time. (2) If the trolley switch is pulled out of the cabinet for testing, it is necessary to clamp the wires on the aviation plug for testing, which prolongs the test time. Since the connection pins of the closing and opening terminals on the aviation plug are close to each other, the clamps after clamping the wires may contact each other and cause a short circuit, which poses a risk of damaging the test instrument. In addition, extra care is required during operation, which may reduce work efficiency. Utility Model Content

[0004] In order to solve the above problems, the present disclosure provides an auxiliary device and system for a trolley switch characteristic test.

[0005] In a first aspect, the present disclosure provides an auxiliary device for testing characteristics of a trolley switch, wherein the trolley switch is used to be connected between a generator set and a power supply system so that the power supply system supplies power to the generator set. The auxiliary device includes: an aviation plug female and a switch opening and closing jack;

[0006] The female aviation plug is electrically connected to the opening and closing jack, and;

[0007] The female aviation plug is used to electrically connect to the male aviation plug of the trolley switch;

[0008] The opening and closing jack is used to be electrically connected to a trolley switch characteristic tester, and the trolley switch characteristic tester is at least used to perform an opening and closing test on the trolley switch according to the auxiliary device.

[0009] Optionally, the aviation plug female connector includes a first closing female connector jack, a second closing female connector jack, a first opening female connector jack, and a second opening female connector jack;

[0010] The first closing female socket, the second closing female socket, the first opening female socket and the second opening female socket are used to electrically connect to the first closing pin, the second closing pin, the first opening pin and the second opening pin of the male pins of the aviation plug male in sequence.

[0011] Optionally, the opening and closing jacks include a first closing jack, a second closing jack, a first opening jack and a second opening jack;

[0012] The first closing socket, the second closing socket, the first opening socket and the second opening socket are electrically connected to the corresponding first closing female socket, the second closing female socket, the first opening female socket and the second opening female socket in sequence through their respective wire paths.

[0013] Optionally, the second closing female socket, the second opening female socket, the second closing socket and the second opening socket are electrically connected and share the same wire path.

[0014] Optionally, the female aviation plug further includes an energy storage female plug socket electrically connected to the positive energy storage pin and the negative energy storage pin of the male plug;

[0015] The device also includes an energy storage jack, which is electrically connected to the female end of the aviation plug and is used to be electrically connected to an external power supply to provide the power required for the trolley switch energy storage.

[0016] Optionally, the energy storage female connector jack includes a positive energy storage female connector jack and a negative energy storage female connector jack, which are used to electrically connect to the positive energy storage pin and the negative energy storage pin in sequence.

[0017] Optionally, the energy storage socket includes a positive energy storage socket and a negative energy storage socket, which are electrically connected to the positive energy storage female socket and the negative energy storage female socket in sequence through respective wire paths.

[0018] Optionally, the device further includes an energy storage switch, which is used to control the electrical connection state between the positive energy storage socket and the negative energy storage socket to control whether the external power supply supplies the power required for the trolley switch energy storage.

[0019] Optionally, the female aviation plug further includes a reserved female socket electrically connected to the remaining male pins of the male aviation plug in a one-to-one correspondence.

[0020] In a second aspect, the present disclosure further provides a trolley switch characteristic test system, comprising:

[0021] A trolley switch, a trolley switch characteristic tester and a trolley switch characteristic test auxiliary tool as described in any one of the first aspects, wherein the trolley switch, the trolley switch characteristic test auxiliary tool and the trolley switch characteristic tester are connected in series in sequence.

[0022] In the above technical solution, the test auxiliary device includes a female aviation plug that can be reliably connected to the male aviation plug of the trolley switch. Through this female aviation plug, the auxiliary device can lead out the opening and closing control circuit of the trolley switch. Inside the auxiliary device, the female socket of the female aviation plug corresponding to the opening and closing pins is internally connected to the dedicated opening and closing sockets at the other end of the tool. These dedicated sockets are designed to connect to an external trolley switch characteristic test instrument. The above technical solution can ensure a reliable connection between the trolley switch and the test instrument; simplify the connection process and reduce the risk of operational errors; improve the efficiency and safety of the test through a standardized interface; and avoid the risk of short circuits caused by directly clamping the wires on the aviation plug. This improves the reliability, safety and test efficiency of the trolley switch characteristic test.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 is a block diagram of an auxiliary device for a trolley switch characteristic test according to an exemplary embodiment;

[0026] Figure 2 is an internal circuit diagram of a trolley switch according to an exemplary embodiment;

[0027] Figure 3 is a structural diagram of an aviation plug female according to an exemplary embodiment;

[0028] Figure 4 is a surface structural diagram of an auxiliary device for a trolley switch characteristic test according to an exemplary embodiment;

[0029] Figure 5 1 is a diagram showing the internal structure of an auxiliary device for a trolley switch characteristic test according to an exemplary embodiment.

[0030] Description of Reference Numerals

[0031] Aviation plug female connector 110, opening and closing socket 120, first closing female connector socket 111, second closing female connector socket 112, first opening female connector socket 113, second opening female connector socket 114, first closing socket 121, second closing socket 122, first opening socket 123, second opening socket 124, positive energy storage female connector socket 115, negative energy storage female connector socket 116, energy storage socket 130, positive energy storage socket 131, negative energy storage socket 132, energy storage switch 140. DETAILED DESCRIPTION

[0032] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0033] Most of the 10 kV power consumption systems of power companies use center-mounted trolley switches. The trolley switch is used to connect between the generator set and the power supply system, so that the power supply system can supply power to the generator set. The trolley switch characteristic test is a key link to ensure the reliability of the system. The main test items include the switch's opening and closing time, three-phase synchronicity, number of bounces, stroke and speed characteristics, etc. These tests all involve the opening and closing circuits of the trolley switch. The auxiliary device for the trolley switch characteristic test provided by the present invention can be applied to the characteristic test of the 10 kV center-mounted trolley switch, and can safely and efficiently lead out the opening and closing wiring of the trolley switch. By providing a standardized interface, reducing on-site wiring work, reducing the risk of misoperation, and adapting to different brands and models of center-mounted trolley switches, the auxiliary device can simplify the test process and improve test efficiency and safety.

[0034] Figure 1 This is a block diagram of an auxiliary device 100 for testing the characteristics of a trolley switch, according to an exemplary embodiment. The trolley switch is used to connect between a generator set and a power supply system, so that the power supply system supplies power to the generator set. The auxiliary device includes: an aviation plug female connector 110 and a switch-on / off jack 120; the aviation plug female connector 110 is electrically connected to the switch-on / off jack 120; the aviation plug female connector 110 is electrically connected to the aviation plug male connector of the trolley switch; the switch-on / off jack 120 is electrically connected to a trolley switch characteristics tester, which is used to perform a switch-on / off test on the trolley switch based on the auxiliary device.

[0035] Here, an aviation plug refers to a multi-pin electrical connector designed for quick connection and disconnection of complex circuits. The male connector is the convex portion of the connector, which is inserted into the female connector. The female connector 110 is the concave portion of the connector, which is used to reliably connect to the male connector of the trolley switch, ensuring accurate transmission of electrical signals. The female connector 110 can contain multiple jacks, allowing simultaneous connection to multiple control pins and signal pins of the trolley switch.

[0036] The opening and closing jack 120 is a standardized connection interface for connecting to a trolley switch characteristic tester for switch opening and closing tests. This simplifies the connection process and ensures connection stability and safety. A trolley switch is a withdrawable medium-voltage switchgear. A trolley switch characteristic tester is a specialized instrument used to test trolley switch characteristics.

[0037] Inside the auxiliary device, the relevant pins of the aviation plug female connector 110 are electrically connected to the opening and closing jack 120 to reduce wiring interference and improve the safety and reliability of the test.

[0038] This auxiliary device simplifies the complex wiring of the trolley switch into an easy-to-use jack connection through standardized interface conversion, while ensuring accurate signal transmission. During the trolley switch characteristic test, the closing and opening of the switch will generate vibration, which can lead to unstable wiring. The auxiliary device ensures the stability of the wiring during the test.

[0039] When in use, first, pull the trolley switch out of the cabinet. At this time, the trolley switch is disconnected from its original main circuit and control circuit, the aviation plug of the trolley switch is separated from the original circuit, and the trolley switch is in the maintenance position; at this time, connect the female aviation plug 110 of the auxiliary device to the male aviation plug of the trolley switch; then, connect the test line of the characteristic tester to the opening and closing jack 120 of the auxiliary device; finally, after confirming that all connections are correct, you can start the characteristic test of the trolley switch.

[0040] The test auxiliary device includes an aviation plug female 110, which can be reliably connected to the aviation plug male of the trolley switch. Through this aviation plug female 110, the auxiliary device can lead out the opening and closing control circuit of the trolley switch. Inside the auxiliary device, the female socket corresponding to the opening and closing pin in the aviation plug female 110 is internally connected to the special opening and closing socket 120 at the other end of the tool. These special sockets are designed to be connected to an external trolley switch characteristic test instrument. Through the above technical solution, a reliable connection between the trolley switch and the tester can be ensured; the connection process can be simplified and the risk of operating errors can be reduced; the efficiency and safety of the test can be improved through a standardized interface; and the risk of short circuit caused by directly clamping the wire on the aviation plug can be avoided. This improves the reliability, safety and test efficiency of the trolley switch characteristic test.

[0041] In one embodiment, the aviation plug female connector 110 includes a first closing female connector jack 111, a second closing female connector jack 112, a first opening female connector jack 113, and a second opening female connector jack 114; the first closing female connector jack 111, the second closing female connector jack 112, the first opening female connector jack 113, and the second opening female connector jack 114 are used to electrically connect to the first closing pin, the second closing pin, the first opening pin, and the second opening pin of the male connector of the aviation plug male connector in sequence.

[0042] Figure 2 FIG. 1 is a diagram showing the internal circuit of a trolley switch according to an exemplary embodiment. Figure 2 As shown, the auxiliary contact S11 of the circuit breaker has a normally open contact 1, a normally open contact 2, a normally closed contact 11 and a normally closed contact 12. The normally open contact 1 (2) is linked to the normally closed contact 11 (12) and is not energized and closed at the same time. The two ends of the closing coil F2 have lead wires C1 and lead wires C2 respectively. The two ends of the opening coil F11 also have lead wires C1 and lead wires C2 respectively. The closing coil F2 is linked to the opening coil F11 and is not energized at the same time. The energy storage contact S2 has a normally open contact 9, a normally open contact 10, a normally open contact 15 and a normally open contact 16. The normally open contact 9, the normally open contact 10, the normally open contact 15 and the normally open contact 16 are linked to each other and are energized at the same time.

[0043] Figure 3 FIG. 1 is a structural diagram of an aviation plug female connector 110 according to an exemplary embodiment. Figure 3 As shown, the auxiliary tool's first closing female connector jack 111 is used to connect to the first closing pin 12 of the trolley switch's male aviation plug, and the second closing female connector jack 112 is used to connect to the second closing pin 14 of the trolley switch's male aviation plug. The auxiliary tool and the trolley switch are thus connected in series to form a closing circuit. Specifically, the auxiliary tool's first closing female connector jack 111, the trolley switch's first closing pin 12, the circuit breaker's auxiliary contact S11, the closing coil F2, the energy storage contact S2, and the trolley switch's second closing pin 14 are sequentially connected in series, thereby leading out the trolley switch's closing wiring.

[0044] The auxiliary tool's first trip female connector jack 113 is used to connect to the first trip pin 31 of the trolley switch's male aviation plug, and the second trip female connector jack 114 is used to connect to the second trip pin 30 of the trolley switch's male aviation plug. The auxiliary tool and the trolley switch are thus connected in series to form a trip circuit. Specifically, the auxiliary tool's first trip female connector jack 113, the trolley switch's first trip pin 31, the circuit breaker's auxiliary contact S11, the trip coil F11, and the trolley switch's second trip pin 30 are sequentially connected in series, thereby leading out the trolley switch's trip wiring.

[0045] The precisely aligned socket and pin design ensures the trolley switch's closing and opening control circuits are accurately connected to the trolley switch characteristic tester. When using this auxiliary tool, carefully verify the position and function of each female socket to ensure they correctly mate with the corresponding male pins on the trolley switch. When performing characteristic tests, you can selectively use the closing circuit and / or the opening circuit based on the test requirements.

[0046] In one embodiment, the closing and opening jack 120 includes a first closing jack 121, a second closing jack 122, a first opening jack 123 and a second opening jack 124; the first closing jack 121, the second closing jack 122, the first opening jack 123 and the second opening jack 124 are electrically connected to the corresponding first closing female jack 111, the second closing female jack 112, the first opening female jack 113 and the second opening female jack 114 in sequence through their respective wire paths.

[0047] Figure 4 is a surface structural diagram of an auxiliary device for a trolley switch characteristic test according to an exemplary embodiment; Figure 5 FIG. 1 is an internal structural diagram of an auxiliary device for a trolley switch characteristic test according to an exemplary embodiment. Figure 4 and Figure 5 As shown, the design of the first closing jack 121, the second closing jack 122, the first opening jack 123, and the second opening jack 124 provides a one-to-one connection point with the female aviation plug 110 for connecting to the trolley switch characteristic tester, thereby ensuring the consistency of the signal path. Establishing an electrical connection between the female aviation plug 110 and the closing and opening jacks 120 within the auxiliary device ensures accurate signal transmission, reducing interference and signal attenuation. This one-to-one connection method ensures that each control signal has an independent transmission path, improving the reliability of signal transmission.

[0048] The trolley switch's opening and closing male pins are connected to the auxiliary device via the female aviation plug 110. The pins are then transmitted through the auxiliary device's internal wire path to the corresponding opening and closing jacks 120, which are then connected to the trolley switch characteristic tester. When connecting the trolley switch, ensure that the female aviation plug 110 is correctly connected so that the male pins correspond correctly. When connecting the trolley switch characteristic tester, select the corresponding opening and closing jacks 120 based on the test requirements. You can choose to use the closing circuit and / or the opening circuit based on the test needs.

[0049] In one embodiment, the second closing female connector jack 112 , the second opening female connector jack 114 , the second closing female connector jack 122 , and the second opening female connector jack 124 are electrically connected and share the same wire path.

[0050] like Figure 5 As shown, the second closing female connector jack 112, the second opening female connector jack 114, the second closing connector jack 122 and the second opening connector jack 124 can be electrically connected through the same wire path, which can simplify the internal structure and optimize the internal wire path without affecting the testing of the closing circuit and the opening circuit.

[0051] In one embodiment, the aviation plug female connector 110 further includes an energy storage female connector jack electrically connected to the positive energy storage pin and the negative energy storage pin of the male connector pin; the device further includes an energy storage jack 130 electrically connected to the aviation plug female connector 110 and used to electrically connect to an external power supply to provide the power required for the trolley switch energy storage.

[0052] like Figure 3 As shown, the energy storage motor M disconnects from the trolley switch when it is pulled out of the cabinet, preventing the trolley switch from automatically storing energy via the energy storage motor M. In related art, the trolley switch can only be stored manually at this time. Manual energy storage is time-consuming and inconvenient, increasing the duration of the trolley switch characteristic test. However, this auxiliary tool allows the trolley switch to be connected to an external power source when pulled out of the cabinet, providing the power required for automatic energy storage.

[0053] like Figure 3 As shown, the auxiliary tool's energy storage female connector can be used to connect to the trolley switch's aviation plug male connector and the negative energy storage pin 35. The auxiliary tool is then connected in series with the trolley switch to form an energy storage circuit. Specifically, the auxiliary tool's energy storage connector 130, the trolley switch's positive energy storage pin 25, the energy storage contact S2, and the negative energy storage pin 35 are connected in series, thereby leading out the trolley switch's energy storage wiring. Furthermore, through the auxiliary tool's internal electrical connections, namely, the connection between the energy storage connector 130 and the energy storage connector 130, an external power source connected to the energy storage connector 130 can be connected to the trolley switch's energy storage circuit, thereby providing the power required for the trolley switch to automatically store energy.

[0054] In one embodiment, the energy storage female connector includes a positive energy storage female connector 115 and a negative energy storage female connector 116 , which are used to electrically connect to the positive energy storage pin and the negative energy storage pin respectively.

[0055] like Figure 3As shown, the positive energy storage female connector 115, which is dedicated to connecting the positive energy storage pin of the trolley switch, and the negative energy storage female connector 116, which is dedicated to connecting the negative energy storage pin of the trolley switch, can ensure the correct polarity connection and form a complete energy storage circuit. When in use, carefully check the identification and position of the positive energy storage female connector 115 and the negative energy storage female connector 116; ensure that the positive energy storage pin and the negative energy storage pin of the trolley switch are correctly aligned with the corresponding energy storage female connector jacks; insert the aviation plug female connector 110 into the trolley switch and ensure that the energy storage pin is fully inserted into the corresponding jack. Connect the external power supply to the energy storage socket 130 of the auxiliary device; turn on the external power supply, and the trolley switch can automatically store energy as needed.

[0056] In one embodiment, the energy storage socket 130 includes a positive energy storage socket 131 and a negative energy storage socket 132 , which are electrically connected to the positive energy storage female socket 115 and the negative energy storage female socket 116 in sequence through respective wire paths.

[0057] like Figure 5 As shown, the positive energy storage jack 131 for connecting to the positive pole of the external power supply and the negative energy storage jack 132 for connecting to the negative pole of the external power supply can ensure that the power is stably transmitted to the trolley switch through the auxiliary device, thereby realizing the automatic energy storage process of the trolley switch. When in use, connect the positive pole of the external power supply to the positive energy storage jack 131 and the negative pole to the negative energy storage jack 132, and correctly connect the aviation plug female connector 110 to the trolley switch, aligning the energy storage female connector jack with the energy storage pin; turn on the external power supply to start the trolley to automatically store energy.

[0058] In one embodiment, the device further includes an energy storage switch 140, which is used to control the electrical connection state between the positive energy storage socket 131 and the negative energy storage socket 132 to control whether the external power supply supplies the power required for the trolley switch energy storage.

[0059] like Figure 5 As shown, the energy storage switch 140 can control the electrical connection between the positive energy storage jack 131 and the negative energy storage jack 132. This allows the circuit between the external power supply and the trolley switch energy storage system to be disconnected or connected, thereby controlling whether the external power supply provides stored energy to the trolley switch. In the event of a failure in the energy storage circuit or the external power supply, the energy storage switch 140 can promptly disconnect the energy storage circuit between the external power supply and the trolley switch, improving the safety and reliability of the trolley start-up characteristics test.

[0060] In one embodiment, the aviation plug female connector 110 further includes a reserved female connector jack that is electrically connected to the remaining male connector pins of the aviation plug male connector in a one-to-one correspondence.

[0061] like Figure 3 As shown, the reserved female sockets correspond one-to-one with the remaining male pins of the aviation plug male, providing additional electrical connection points while maintaining full compatibility with the standard aviation plug male.

[0062] The present disclosure also provides a trolley switch characteristic test system, comprising:

[0063] The trolley switch, the trolley switch characteristic tester and the above-mentioned trolley switch characteristic test auxiliary tool, the trolley switch, the trolley switch characteristic test auxiliary tool and the trolley switch characteristic tester are connected in series in sequence.

[0064] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0066] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An auxiliary device for a trolley switch characteristic test, characterized in that: The trolley switch is used to connect between the generator set and the power supply system so that the power supply system supplies power to the generator set. The auxiliary device includes: an aviation plug female (110) and a switch opening and closing jack (120); The aviation plug female head (110) is electrically connected to the opening and closing jack (120); The female aviation plug (110) is used for electrical connection to the male aviation plug of the trolley switch; The opening and closing socket (120) is used for electrically connecting to a trolley switch characteristic tester, and the trolley switch characteristic tester is used at least for performing an opening and closing test on the trolley switch according to the auxiliary device.

2. The auxiliary device according to claim 1, characterized in that The aviation plug female connector (110) comprises a first closing female connector jack (111), a second closing female connector jack (112), a first opening female connector jack (113) and a second opening female connector jack (114); The first closing female socket (111), the second closing female socket (112), the first opening female socket (113) and the second opening female socket (114) are used to electrically connect to the first closing pin, the second closing pin, the first opening pin and the second opening pin of the male pins of the aviation plug male in sequence.

3. The auxiliary device according to claim 2, characterized in that The closing and opening jack (120) comprises a first closing jack (121), a second closing jack (122), a first opening jack (123) and a second opening jack (124); The first closing jack (121), the second closing jack (122), the first opening jack (123) and the second opening jack (124) are electrically connected in sequence to the corresponding first closing female jack (111), the second closing female jack (112), the first opening female jack (113) and the second opening female jack (114) through respective wire paths.

4. The auxiliary device according to claim 3, characterized in that The second closing female socket (112), the second opening female socket (114), the second closing socket (122) and the second opening socket (124) are electrically connected and share the same wire path.

5. The auxiliary device according to any one of claims 2 to 4, characterized in that: The aviation plug female connector (110) further comprises an energy storage female connector jack electrically connected to the positive energy storage connector pin and the negative energy storage connector pin of the male connector pin; The device further comprises an energy storage socket (130) electrically connected to the aviation plug female (110) and used for electrically connecting to an external power source to provide the power required for the trolley switch energy storage.

6. The auxiliary device according to claim 5, characterized in that The energy storage female connector comprises a positive energy storage female connector (115) and a negative energy storage female connector (116), which are used to electrically connect to the positive energy storage pin and the negative energy storage pin in sequence.

7. The auxiliary device according to claim 6, characterized in that The energy storage socket (130) comprises a positive energy storage socket (131) and a negative energy storage socket (132), which are electrically connected to the positive energy storage female socket (115) and the negative energy storage female socket (116) in sequence through respective wire paths.

8. The auxiliary device according to claim 7, characterized in that The device further comprises an energy storage switch (140), wherein the energy storage switch (140) is used to control the electrical connection state between the positive energy storage socket (131) and the negative energy storage socket (132), so as to control whether the external power supply supplies the power required for the trolley switch energy storage.

9. The auxiliary device according to claim 5, characterized in that The aviation plug female connector (110) further comprises a reserved female connector jack electrically connected in a one-to-one correspondence with the remaining male connector pins of the aviation plug male connector.

10. A trolley switch characteristic test system, characterized in that: include: A trolley switch, a trolley switch characteristic tester and a trolley switch characteristic test auxiliary tool as described in any one of claims 1 to 9, wherein the trolley switch, the trolley switch characteristic test auxiliary tool and the trolley switch characteristic tester are connected in series in sequence.

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