Start-stop testing device for electric equipment

Abstract

The invention provides a start-stop testing device for electric equipment. The start-stop testing device comprises a breaking connector, a main switch, a start-stop control circuit, a power output circuit, a state indicating circuit and a power circuit, wherein the power circuit is connected with the breaking connector and the main switch respectively; the breaking connector is connected in parallel with the main switch; the breaking connector and the main switch are respectively connected with the start-stop control circuit; the start-stop control circuit is respectively connected with the power supply output circuit, the power supply circuit and the state indication circuit; the power supply output circuit is connected with the power supply circuit and the electric equipment respectively; under the condition that the breaking connector is switched on and the main switch is switched off, the start-stop control circuit enables the power supply output circuit to be switched on so as to carry out start-stop test on the electric equipment; the state indicating circuit is connected with the power output of the power line through the start-stop control circuit so as to indicate the operation state of the power output circuit. Through the start-stop test device, the test efficiency and safety of the start-stop test on the electric equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment testing, and in particular to a start-stop testing device for electrical equipment. Background Art

[0002] Low-voltage switchgear is a device used to receive and distribute electrical energy in the power system. Before the electrical equipment meets the conditions for formal commissioning, it is necessary to start and stop the control circuit in the low-voltage switchgear to ensure that the power supply circuit and wiring in the low-voltage switchgear can operate correctly.

[0003] At present, low-voltage switchgear generally adopts drawer-type switchgear and fixed-partition-type switchgear. Among them, the module structure in the drawer-type switchgear is compact, with good availability and interchangeability, but it is impossible to perform start-stop tests on high-power electrical equipment. When the fixed-partition-type switchgear is used for start-stop debugging, the main switch must be turned off and the main power cable of the electrical equipment must be removed. Otherwise, there will be a risk of damaging the electrical equipment by outputting AC power to the electrical equipment due to the start-stop test, which reduces the test efficiency of the start-stop test on the electrical equipment, and thus reduces the safety of the electrical equipment. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a start-stop test device for electrical equipment. By connecting and disconnecting connectors in the start-stop control circuit, the start-stop test device can perform start-stop tests on the electrical equipment without closing the main switch. When performing the start-stop test, there is no output voltage to the electrical equipment after the system is powered on, and there is no need to remove the main power cable of the electrical equipment. The operating status of the power output circuit of the electrical equipment can be determined according to the indicator light included in the status indication circuit, thereby improving the test efficiency of the start-stop test on the electrical equipment and thereby improving the safety of the electrical equipment.

[0005] The embodiment of the present application provides a start-stop test device for an electrical device, the start-stop test device comprising: a disconnect connector, a main switch, a start-stop control circuit, a power output circuit, a status indication circuit and a power supply line:

[0006] The first end of the power supply circuit is connected to the first end of the disconnect connector and the first end of the main switch respectively; the second end of the disconnect connector is connected in parallel with the second end of the main switch; the third end of the disconnect connector and the third end of the main switch are connected to the first end and the second end of the start-stop control circuit respectively; the third end of the start-stop control circuit is connected to the first end of the power output circuit; the second end of the power output circuit is connected to the second end of the power supply circuit; the third end of the power output circuit is connected to the first end of the power-consuming device; the fourth end of the start-stop control circuit is connected to the third end of the power supply circuit; the fifth end of the start-stop control circuit is connected to the first end of the state indicating circuit;

[0007] When the disconnect connector is turned on and the main switch is turned off, the start-stop control circuit turns on the power output of the power line based on the start-stop test signal received from the outside, so that the power output circuit is turned on to perform a start-stop test on the electrical equipment; the status indication circuit turns on the power output of the power line through the start-stop control circuit to indicate the operating status of the power output circuit.

[0008] Furthermore, the power supply circuit includes a control power supply bus and a three-phase bus:

[0009] The first end of the control power bus is connected to the first end of the disconnect connector and the first end of the main switch respectively; the second end of the control power bus is connected to the fourth end of the start-stop control circuit; the first end of the three-phase bus is connected to the second end of the power output circuit.

[0010] Furthermore, the disconnect connector comprises: a disconnect plug and a disconnect terminal; wherein the disconnect terminal comprises: a conductive sheet and a contact:

[0011] When the disconnect plug inserted in the disconnect terminal is removed, the conductive sheet is pressed by the contact point to make the disconnect connector conductive.

[0012] Furthermore, the disconnect terminal also includes: a crimping screw and a crimping bin.

[0013] Furthermore, the start-stop control circuit includes: a first relay switch, a relay, a contactor and a start-stop controller:

[0014] The first end of the start-stop controller is connected to the first end of the first relay switch; the second end of the first relay switch is respectively connected to the third end of the disconnect connector and the third end of the main switch; the first end of the relay is respectively connected to the fourth end of the disconnect connector and the fourth end of the main switch; the second end of the relay and the second end of the contactor are respectively connected to the third end of the power supply line; the first end of the contactor is connected to the second end of the start-stop controller; the second end of the first relay switch, the second end of the relay and the second end of the contactor are respectively connected to the first end of the state indication circuit;

[0015] The start-stop controller is closed based on the start-stop test signal received from the outside, and the first relay switch is closed so that the relay and the contactor are connected to the power output of the power line; the contactor turns on the power output circuit based on the power output to perform a start-stop test on the electrical equipment.

[0016] Furthermore, the start-stop control circuit further includes: an emergency stop controller:

[0017] The first end of the emergency stop controller is connected to the first end of the relay; the second end of the emergency stop controller is connected to the third end of the main switch;

[0018] The emergency stop controller is used to perform an emergency stop start-stop test on the electrical equipment through the start-stop control circuit according to the working state of the electrical equipment.

[0019] Furthermore, the power output circuit includes: a circuit breaker, a first contactor switch and a thermal relay:

[0020] The first end of the circuit breaker is connected to the second end of the power line; the second end of the circuit breaker is connected to the first end of the first contactor switch; the second end of the first contactor switch is connected to the first end of the thermal relay; the second end of the thermal relay is connected to the first end of the electrical equipment;

[0021] When the main switch is disconnected, the circuit breaker is in an open circuit state; the first contactor switch is closed based on the received closing control signal sent by the start-stop control circuit to perform a start-stop test on the electrical equipment.

[0022] Furthermore, the thermal relay is used to protect electrical equipment from damage caused by overload current.

[0023] Furthermore, the state indication circuit includes: a second contactor switch and an operation indicator light:

[0024] The first end of the second contactor switch is connected to the first end of the operation indicator light; the second end of the second contactor switch and the second end of the operation indicator light are respectively connected to the fifth end of the start-stop control circuit;

[0025] When the second contactor switch turns on the power output of the power supply circuit through the start-stop control circuit, the second contactor switch is closed to light up the operation indicator light to indicate that the operation state of the power output circuit is a normal operation state;

[0026] When the second contactor switch cannot connect the power output of the power line through the start-stop control circuit, the second contactor switch is disconnected to turn off the operation indicator light to indicate that the operation state of the power output circuit is a stopped operation state.

[0027] Furthermore, the state indication circuit further includes: a second relay switch and a fault indicator light:

[0028] The first end of the second relay switch is connected to the second end of the second contactor switch; the second end of the second relay switch is connected to the first end of the fault indicator light; the second end of the fault indicator light is connected to the second end of the operation indicator light;

[0029] When the second relay switch is connected to the power output of the power supply circuit through the start-stop control circuit, the second relay switch is disconnected to turn off the fault indicator light, so as to indicate that the operation state of the power output circuit is a normal operation state;

[0030] When the second relay switch cannot connect the power output of the power line through the start-stop control circuit, the second relay switch is closed to light up the fault indicator light to indicate that the operating state of the power output circuit is a stopped operating state.

[0031] The start-stop test device of an electrical device provided in an embodiment of the present application comprises: a disconnect connector, a main switch, a start-stop control circuit, a power output circuit, a status indication circuit and a power line: the first end of the power line is respectively connected to the first end of the disconnect connector and the first end of the main switch; the second end of the disconnect connector is connected in parallel with the second end of the main switch; the third end of the disconnect connector and the third end of the main switch are respectively connected to the first end and the second end of the start-stop control circuit; the third end of the start-stop control circuit is connected to the first end of the power output circuit; the second end of the power output circuit is connected to the first end of the power line; The two ends are connected; the third end of the power output circuit is connected to the first end of the electrical equipment; the fourth end of the start-stop control circuit is connected to the third end of the power line; the fifth end of the start-stop control circuit is connected to the first end of the status indication circuit; when the disconnect connector is turned on and the main switch is turned off, the start-stop control circuit turns on the power output of the power line based on the start-stop test signal received from the outside, so that the power output circuit is turned on to perform a start-stop test on the electrical equipment; the status indication circuit turns on the power output of the power line through the start-stop control circuit to indicate the operating status of the power output circuit.

[0032] Compared with the method in the prior art of using drawer-type switch cabinets and fixed partitioned switch cabinets, turning off the main switch and removing the main power cable of the electrical equipment, by turning on the disconnect connector in the start-stop control circuit, the start-stop test device can perform the start-stop test on the electrical equipment without closing the main switch. When performing the start-stop test, there is no output voltage to the electrical equipment after the system is powered on, and there is no need to remove the main power cable of the electrical equipment. The operating status of the power output circuit of the electrical equipment can be determined according to the indicator light included in the status indication circuit, thereby improving the test efficiency of the start-stop test on the electrical equipment, and thereby improving the safety of the electrical equipment.

[0033] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 One of the structural schematic diagrams of a start-stop test device for electrical equipment provided in an embodiment of the present application;

[0036] Figure 2 A second structural schematic diagram of a start-stop test device for electrical equipment provided in an embodiment of the present application;

[0037] Figure 3 A schematic structural diagram of a disconnect connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0039] Research has found that at present, low-voltage switchgear generally uses drawer-type switchgear and fixed-partition switchgear. Among them, the module structure in the drawer switchgear is compact, with good availability and interchangeability, but it is impossible to perform start-stop tests on high-power electrical equipment. When the fixed-partition switchgear is performing start-stop debugging, the main switch must be turned off and the main power cable of the electrical equipment must be removed. Otherwise, there will be a risk of damaging the electrical equipment by outputting AC power to the electrical equipment due to the start-stop test, which reduces the test efficiency of the start-stop test on the electrical equipment, and thus reduces the safety of the electrical equipment.

[0040] Based on this, an embodiment of the present application provides a start-stop test device for electrical equipment. By connecting and disconnecting connectors in the start-stop control circuit, the start-stop test device can perform a start-stop test on the electrical equipment without closing the main switch. When performing the start-stop test, there is no output voltage to the electrical equipment after the system is powered on, and there is no need to remove the main power cable of the electrical equipment. The operating status of the power output circuit of the electrical equipment can be determined based on the indicator light included in the status indication circuit, thereby improving the test efficiency of the start-stop test on the electrical equipment and thereby improving the safety of the electrical equipment.

[0041] See also Figure 1 , Figure 1 This is one of the structural schematic diagrams of a start-stop test device for electrical equipment provided in an embodiment of the present application.

[0042] like Figure 1 As shown in the figure, the start-stop test device for electrical equipment provided in the embodiment of the present application is generally used in a low-voltage switchgear. The start-stop test device 10 includes: a disconnect connector 110, a main switch 120, a start-stop control circuit 130, a power output circuit 140, a status indication circuit 150 and a power line 160.

[0043] Among them, the first end of the power supply line 160 is respectively connected to the first end of the disconnect connector 110 and the first end of the main switch 120; the second end of the disconnect connector 110 is connected in parallel with the second end of the main switch 120; the third end of the disconnect connector 110 and the third end of the main switch 120 are respectively connected to the first end and the second end of the start-stop control circuit 130; the third end of the start-stop control circuit 130 is connected to the first end of the power output circuit 140; the second end of the power output circuit 140 is connected to the second end of the power supply line 160; the third end of the power output circuit 140 is connected to the first end of the power device 170; the fourth end of the start-stop control circuit 130 is connected to the third end of the power supply line 160; the fifth end of the start-stop control circuit 130 is connected to the first end of the state indication circuit 150.

[0044] When the disconnect connector 110 is turned on and the main switch 120 is turned off, the start-stop control circuit 130 turns on the power output of the power line 160 based on the start-stop test signal received from the outside, so that the power output circuit 140 is turned on to perform a start-stop test on the electrical equipment 170; the status indication circuit 150 turns on the power output of the power line 160 through the start-stop control circuit 130 to indicate the operating status of the power output circuit 140 based on the power output.

[0045] In an embodiment of the present application, the low-voltage switchgear may include a fixed-partition switchgear; the electrical equipment refers to equipment that relies on electricity to realize equipment functions, such as motors, heaters, and amplifiers.

[0046] Taking the start-stop test of the motor (electrical equipment 170) performed by the start-stop test device 10 in a fixed partitioned switch cabinet as an example, by turning on the disconnect connector 110 in the start-stop control circuit 130, the start-stop test device 10 can perform the start-stop test on the motor (electrical equipment 170) without closing the main switch 120. When performing the start-stop test, there is no output voltage to the motor (electrical equipment 170) after the system is powered on, and there is no need to remove the main power cable of the motor (electrical equipment 170).

[0047] The following will be combined Figure 2 The structure and working principle of a start-stop test of an electrical equipment provided in the present application are further explained.

[0048] See also Figure 2 , Figure 2 This is a second structural schematic diagram of a start-stop test device for electrical equipment provided in an embodiment of the present application.

[0049] like Figure 2 As shown in , a power circuit 160 provided in an embodiment of the present application includes a control power bus 161 and a three-phase bus 162 .

[0050] The first end of the control power bus 161 is connected to the first end of the disconnect connector 110 and the first end of the main switch 120 respectively; the second end of the control power bus 161 is connected to the fourth end of the start-stop control circuit 130; the first end of the three-phase bus 162 is connected to the second end of the power output circuit 140.

[0051] Here, the first end of the control power bus 161 serves as the first end of the power line; the first end of the three-phase bus 162 serves as the second end of the power line; the first end of the three-phase bus 162 and the second end of the control power bus 161 serve as the third end of the power line.

[0052] In an embodiment of the present application, the control power bus 161 is a small distribution line used to provide a stable power output for the start-stop control circuit 130; the three-phase bus 162 is used to provide power transmission for the power output circuit 140. Compared with a single-phase line, the three-phase bus 162 can carry a larger load and provide a more stable voltage and current output for the load.

[0053] For further information, see Figure 3 , Figure 3A schematic structural diagram of a disconnect connector provided in an embodiment of the present application.

[0054] like Figure 3 As shown in , a disconnect connector 110 provided in an embodiment of the present application includes: a disconnect plug 111 and a disconnect terminal 112 ; wherein, the disconnect terminal 112 includes: a conductive sheet 1121 and a contact 1122 .

[0055] In the embodiment of the present application, the disconnect plug 111 includes an electrical connector that can be inserted into or unplugged from the disconnect terminal 112. The plug design of the disconnect plug 111 makes it unnecessary to disassemble the entire circuit when testing after maintenance or replacement of electrical equipment or control circuits. The power connection can be disconnected for testing only by pulling out the plug; the disconnect terminal includes a terminal with a disconnect function, which is used for testing after maintenance or replacement of electrical equipment or control circuits without completely disconnecting the entire circuit.

[0056] Here, when the disconnect plug 111 inserted in the disconnect terminal 112 is removed, the conductive sheet 1121 is pressed by two contacts corresponding to the contact point 1122 to make the disconnect connector 110 conductive.

[0057] Further, such as Figure 3 As shown in , the disconnect terminal 112 further includes: a crimping screw 1123 and a crimping bin 1124 .

[0058] In the embodiment of the present application, the crimping screw 1123 is used to fix the wire in the disconnect terminal 112; the wire crimping bin 1124 is used to provide a storage space for the wire in the disconnect terminal 112 to ensure that the wire is not squeezed or damaged when fixed.

[0059] Here, when the wire is inserted into the wire pressing chamber 1124 of the disconnect terminal 112 and fixed by the crimping screw 1123 , the wire is pressed between the crimping screw 1123 and the wire pressing chamber 1124 to form a reliable electrical connection in the disconnect terminal 112 .

[0060] Further, such as Figure 2 As shown in , a start-stop control circuit 130 provided in an embodiment of the present application includes: a first relay switch 131 , a relay 132 , a contactor 133 and a start-stop controller 134 .

[0061] Among them, the first end of the start-stop controller 134 is connected to the first end of the first relay switch 131; the second end of the first relay switch 131 is respectively connected to the third end of the disconnect connector 110 and the third end of the main switch 120; the first end of the relay 132 is respectively connected to the fourth end of the disconnect connector 110 and the fourth end of the main switch 120; the second end of the relay 132 and the second end of the contactor 133 are respectively connected to the third end of the power supply line 160; the first end of the contactor 133 is connected to the second end of the start-stop controller 134; the second end of the first relay switch 131, the second end of the relay 132 and the second end of the contactor 133 are respectively connected to the first end of the status indication circuit 150.

[0062] Here, the second end of the first relay switch 131 serves as the first end and the second end of the start-stop control circuit 130 respectively; the contactor 133 serves as the third end of the start-stop control circuit 130; the second end of the relay 132 and the second end of the contactor 133 serve as the fourth end of the start-stop control circuit 130 respectively; the second end of the first relay switch 131, the second end of the relay 132 and the second end of the contactor 133 serve as the fourth end of the start-stop control circuit 130 respectively.

[0063] The start-stop controller 134 is closed based on the start-stop test signal received from the outside, and closes the first relay switch 131 so that the relay 132 and the contactor 133 are connected to the power output of the power line 160; the contactor 133 turns on the power output circuit 140 based on the power output to perform a start-stop test on the electrical equipment 170.

[0064] In an embodiment of the present application, the start-stop controller 134 may include a start-stop command control switch, and the start-stop controller 134 is used to receive a start-stop test signal sent by a distributed control system (DCS system) to indicate the start of a start-stop test on the electrical equipment.

[0065] In the embodiment of the present application, the relay 132 refers to a switching device that can control a larger current by a smaller current, and may include functions such as remote control, signal amplification, and circuit protection; wherein the relay 132 is interconnected with the first relay switch 131, and after the relay 132 is connected to the power output of the power line 160, the first relay switch 131 is closed.

[0066] The contactor 133 refers to a high-current switching device for connecting or disconnecting a circuit, which may include functions for controlling the start, stop, forward and reverse operation of a motor. The contactor can withstand a relatively high current load and can operate the device through remote control; wherein, the contactor 133 closes the first contactor switch 142 in the power output circuit 140 based on the power output, so that the power output circuit 140 is turned on.

[0067] Further, such as Figure 2 As shown in , the start-stop control circuit 130 also includes: an emergency stop controller 135 .

[0068] The first end of the emergency stop controller 135 is connected to the first end of the relay 132 ; the second end of the emergency stop controller 135 is connected to the third end of the main switch 120 .

[0069] In the embodiment of the present application, the emergency stop controller 135 is used to perform an emergency stop on the electrical equipment 170 through the start-stop control circuit 130 according to the working state of the electrical equipment 170 .

[0070] Further, such as Figure 2 As shown in , the power output circuit 140 includes: a circuit breaker 141, a first contactor switch 142 and a thermal relay 143.

[0071] Among them, the first end of the circuit breaker 141 is connected to the second end of the power line 160; the second end of the circuit breaker 141 is connected to the first end of the first contactor switch 142; the second end of the first contactor switch 142 is connected to the first end of the thermal relay 143; the second end of the thermal relay 143 is connected to the first end of the electrical equipment 170.

[0072] Here, the first contactor switch 142 serves as the first end of the power output circuit 140 ; ​​the first end of the circuit breaker 141 serves as the second end of the power output circuit 140 ; ​​and the second end of the thermal relay 143 serves as the third end of the power output circuit 140 .

[0073] In the embodiment of the present application, after the power output is turned on, the contactor 133 in the start-stop control circuit 130 can remotely control the first contactor switch 142 to close.

[0074] Specifically, when the main switch 120 is disconnected, the circuit breaker 141 is in an open circuit state; the first contactor switch 142 is closed based on the closing control signal received from the contactor 133 in the start-stop control circuit 130 to perform a start-stop test on the electrical equipment 170.

[0075] In the embodiment of the present application, the circuit breaker 141 is a protective device that can automatically cut off the circuit to prevent the electrical equipment 170 from being damaged due to circuit overload or short circuit, and can be reclosed after the overload is eliminated.

[0076] Further, such as Figure 2 As shown in FIG. 1 , the thermal relay 143 is used to protect the electrical device 170 from being damaged by overload current.

[0077] Further, such as Figure 2 As shown in , the state indicating circuit 150 includes: a second contactor switch 151 and an operation indicator light 152.

[0078] Among them, the first end of the second contactor switch 151 is connected to the first end of the operation indicator light 152; the second end of the second contactor switch 151 and the second end of the operation indicator light 152 are respectively connected to the fifth end of the start-stop control circuit 130.

[0079] Here, the second end of the second contactor switch 151 and the second end of the operation indicator light 152 serve as the first end of the state indicating circuit 150 respectively.

[0080] In the embodiment of the present application, the contactor 133, the first contactor switch 142 and the second contactor switch 151 are interconnected; specifically, after the contactor 133 is connected to the power output of the power line 160, the first contactor switch 142 is closed to turn on the power output circuit 140; after the first contactor switch 142 is closed, the second contactor switch 151 is closed.

[0081] When the second contactor switch 151 connects the power output of the power line 160 through the contactor 133, the second contactor switch 151 is closed to light up the operation indicator light 152 to indicate that the operation state of the power output circuit 140 is a normal operation state.

[0082] Further, when the second contactor switch 151 does not connect the power output of the power line 160 through the contactor 133, the second contactor switch 151 is disconnected to turn off the operation indicator light 152 to indicate that the operation state of the power output circuit 140 is a stopped operation state.

[0083] Further, such as Figure 2 As shown in , the state indicating circuit 150 further includes: a second relay switch 153 and a fault indicator light 154 .

[0084] Among them, the first end of the second relay switch 153 is connected to the second end of the second contactor switch 151; the second end of the second relay switch 153 is connected to the first end of the fault indicator light 154; the second end of the fault indicator light 154 is connected to the second end of the operation indicator light 152.

[0085] In the embodiment of the present application, the relay 132 and the second relay switch 153 are interconnected; specifically, when the first contactor switch 142 and the second contactor switch 151 are both closed, the relay 132 is turned on to disconnect the second relay switch 153.

[0086] When the second relay switch 153 is connected to the power output of the power line 160 through the relay 132, the second relay switch 153 is disconnected to turn off the fault indicator light 154, so as to indicate that the operation state of the power output circuit 140 is a normal operation state;

[0087] When the second relay switch 153 does not connect the power output of the power line 160 through the relay 132, the second relay switch 153 is closed to light up the fault indicator light 154 to indicate that the operation state of the power output circuit is a stopped operation state.

[0088] The start-stop test device for electrical equipment provided in the embodiment of the present application can perform a start-stop test on the electrical equipment without closing the main switch by connecting the disconnecting connector in the start-stop control circuit. When performing the start-stop test, there is no output voltage to the electrical equipment after the system is powered on, and there is no need to remove the main power cable of the electrical equipment. The operating status of the power output circuit of the electrical equipment can be determined based on the indicator light included in the status indication circuit, thereby improving the test efficiency of the start-stop test on the electrical equipment and further improving the safety of the electrical equipment.

[0089] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0090] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0091] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0092] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0093] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0094] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A start-stop test device for electrical equipment, characterized in that: The start-stop test device comprises: a disconnect connector, a main switch, a start-stop control circuit, a power output circuit, a status indication circuit and a power supply line: The first end of the power supply circuit is connected to the first end of the disconnect connector and the first end of the main switch respectively; the second end of the disconnect connector is connected in parallel with the second end of the main switch; the third end of the disconnect connector and the third end of the main switch are connected to the first end and the second end of the start-stop control circuit respectively; the third end of the start-stop control circuit is connected to the first end of the power output circuit; the second end of the power output circuit is connected to the second end of the power supply circuit; the third end of the power output circuit is connected to the first end of the power-consuming device; the fourth end of the start-stop control circuit is connected to the third end of the power supply circuit; the fifth end of the start-stop control circuit is connected to the first end of the state indicating circuit; When the disconnect connector is turned on and the main switch is turned off, the start-stop control circuit turns on the power output of the power line based on the start-stop test signal received from the outside, so that the power output circuit is turned on to perform a start-stop test on the electrical equipment; the status indication circuit turns on the power output of the power line through the start-stop control circuit to indicate the operating status of the power output circuit.

2. The device according to claim 1, characterized in that The power supply circuit includes a control power supply bus and a three-phase bus: The first end of the control power bus is connected to the first end of the disconnect connector and the first end of the main switch respectively; the second end of the control power bus is connected to the fourth end of the start-stop control circuit; the first end of the three-phase bus is connected to the second end of the power output circuit.

3. The device according to claim 1, characterized in that The disconnect connector includes: a disconnect plug and a disconnect terminal; wherein the disconnect terminal includes: a conductive sheet and a contact: When the disconnect plug inserted in the disconnect terminal is removed, the conductive sheet is pressed by the contact point to make the disconnect connector conductive.

4. The device according to claim 3, characterized in that The disconnect terminal also includes: a crimping screw and a crimping bin.

5. The device according to claim 1, characterized in that The start-stop control circuit includes: a first relay switch, a relay, a contactor and a start-stop controller: The first end of the start-stop controller is connected to the first end of the first relay switch; the second end of the first relay switch is respectively connected to the third end of the disconnect connector and the third end of the main switch; the first end of the relay is respectively connected to the fourth end of the disconnect connector and the fourth end of the main switch; the second end of the relay and the second end of the contactor are respectively connected to the third end of the power supply line; the first end of the contactor is connected to the second end of the start-stop controller; the second end of the first relay switch, the second end of the relay and the second end of the contactor are respectively connected to the first end of the state indication circuit; The start-stop controller is closed based on the start-stop test signal received from the outside, and the first relay switch is closed so that the relay and the contactor are connected to the power output of the power line; the contactor turns on the power output circuit based on the power output to perform a start-stop test on the electrical equipment.

6. The device according to claim 5, characterized in that The start-stop control circuit also includes: an emergency stop controller: The first end of the emergency stop controller is connected to the first end of the relay; the second end of the emergency stop controller is connected to the third end of the main switch; The emergency stop controller is used to perform an emergency stop on the electrical equipment through the start-stop control circuit according to the working state of the electrical equipment.

7. The device according to claim 1, characterized in that The power output circuit includes: a circuit breaker, a first contactor switch and a thermal relay: The first end of the circuit breaker is connected to the second end of the power line; the second end of the circuit breaker is connected to the first end of the first contactor switch; the second end of the first contactor switch is connected to the first end of the thermal relay; the second end of the thermal relay is connected to the first end of the electrical equipment; When the main switch is disconnected, the circuit breaker is in an open circuit state; the first contactor switch is closed based on the received closing control signal sent by the start-stop control circuit to perform a start-stop test on the electrical equipment.

8. The device according to claim 7, characterized in that The thermal relay is used to protect electrical equipment from being damaged by overload current.

9. The device according to claim 1, characterized in that The state indication circuit includes: a second contactor switch and an operation indicator light: The first end of the second contactor switch is connected to the first end of the operation indicator light; the second end of the second contactor switch and the second end of the operation indicator light are respectively connected to the fifth end of the start-stop control circuit; When the second contactor switch turns on the power output of the power supply circuit through the start-stop control circuit, the second contactor switch is closed to light up the operation indicator light to indicate that the operation state of the power output circuit is a normal operation state; When the second contactor switch cannot connect the power output of the power line through the start-stop control circuit, the second contactor switch is disconnected to turn off the operation indicator light to indicate that the operation state of the power output circuit is a stopped operation state.

10. The device according to claim 9, characterized in that The state indication circuit also includes: a second relay switch and a fault indicator light: The first end of the second relay switch is connected to the second end of the second contactor switch; the second end of the second relay switch is connected to the first end of the fault indicator light; the second end of the fault indicator light is connected to the second end of the operation indicator light; When the second relay switch is connected to the power output of the power supply circuit through the start-stop control circuit, the second relay switch is disconnected to turn off the fault indicator light, so as to indicate that the operation state of the power output circuit is a normal operation state; When the second relay switch cannot connect the power output of the power line through the start-stop control circuit, the second relay switch is closed to light up the fault indicator light to indicate that the operating state of the power output circuit is a stopped operating state.

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