CN216956223U - Electrical apparatus fault detection frock - Google Patents
Electrical apparatus fault detection frock Download PDFInfo
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- CN216956223U CN216956223U CN202123363475.1U CN202123363475U CN216956223U CN 216956223 U CN216956223 U CN 216956223U CN 202123363475 U CN202123363475 U CN 202123363475U CN 216956223 U CN216956223 U CN 216956223U
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Abstract
The application relates to an electric appliance fault detection tool, which comprises a conductive circuit and a detection circuit, wherein a first detection end and a second detection end are respectively arranged on two sides of the conductive circuit, and the first detection end and the second detection end are used for being connected with a circuit to be detected; the detection circuit comprises a control switch and at least one detection branch, an indicator is arranged on the detection branch, and the control switch is used for controlling the conduction of the detection branch and the conductive circuit. This application makes one set of detection frock with low costs, the structure is simple and easy, conveniently carry and use through whole car factory current material, provides in on-the-spot production personnel, after sales personnel use, solves when the low-voltage apparatus trouble appears in whole car, can confirm the problem of trouble reason fast.
Description
Technical Field
The application relates to the technical field of circuit electric appliance detection, in particular to an electric appliance fault detection tool.
Background
Along with the continuous development of the automobile industry, the tail gas emission of the traditional fuel vehicle pollutes the environment, the new energy automobile continuously and rapidly develops under the support of national policies due to concepts of environmental protection and clean energy, and under the influence of the continuous development of 5G intelligent traffic, more and more various low-voltage electrical equipment are used on the new energy automobile, so that the failure rate of the low-voltage electrical equipment of the whole automobile is continuously improved. In the fault treatment of low-voltage electrical equipment, a large amount of detection equipment is needed, the problems of overlarge equipment input resources and low problem solving efficiency exist, and in the actual treatment, the faults are often needed to be confirmed quickly and solved. The problem that research and development personnel need to solve urgently is to design a detection electrical equipment fault with low cost, simple structure and convenient use.
Disclosure of Invention
The application provides a circuit electrical apparatus fault detection frock, when the electrical apparatus trouble appears in whole car, can confirm the fault reason fast.
For solving the above problem, this application provides an electrical apparatus fault detection frock: the detection circuit comprises a conductive circuit and a detection circuit, wherein a first detection end and a second detection end are respectively arranged on two sides of the conductive circuit and are used for being connected with the circuit to be detected; the detection circuit comprises a control switch and at least one detection branch, an indicator is arranged on the detection branch, and the control switch is used for controlling the conduction of the detection branch and the conductive circuit. When the detection tool is electrified, the conductive circuit is connected with a detection circuit, the electrified part of the whole circuit is a series circuit, when the fault electric appliance has no fault, the indicator has no signal output, when the detector electric appliance has fault, the detection tool circuit is conducted, and the indicator outputs a wire number.
Further, when the detection circuit includes at least two detection branches, the specifications of the indicators on different detection branches are different. The detection branch circuits are matched with the voltage circuit specification of the detected electric appliance according to the voltage and current specifications of the fault electric appliance, and the detection circuit matched with the indicator specification on each detection branch circuit is selected through the control switch according to the specific voltage and current models of different indicators when the detection circuit is detected, so that the indication signal sent by the indicator is more accurate.
When at least two detection branches are adopted, indicators with different voltage and current specifications are arranged on each detection branch, different detection branches are switched and selected through a control switch, the detection of the on-off of different low-voltage electrical equipment and circuits can be realized, different detection branches are selected according to the specifications of a fault electrical appliance, and any detection branch needs to be selected to be selectively conducted through the control switch, so that the detection circuit is convenient to use and simple to operate;
further, when the detection circuit includes at least two detection branches, the control switch is configured to select one of the detection branches to be turned on.
When the control switch is single-pole single-throw, each branch is respectively provided with a control switch, and when the detection branch needs to be used for detection, the switch on the detection branch is turned on; when the control switch is single-pole multi-throw, only one control switch needs to be connected in the conductive circuit, and when the detection branch circuits need to be communicated, the contact of the control switch is connected with the detection branch circuits.
Furthermore, the first detection end and the second detection end are respectively provided with at least two different types of detection terminals, and the different types of detection terminals are connected in a forked parallel manner. Wherein, a plurality of test terminals are all connected to each sense terminal in the parallelly connected mode of bifurcation, and the test terminal kind of every sense terminal is different, like contact pin formula, clip formula, wiring formula etc. make its detection frock during operation like this, can adapt to more detection scenes, it is more convenient to use.
Furthermore, the first detection end and the second detection end are respectively provided with a pin terminal and a clip terminal. Wherein, every sense terminal is equal connecting pin terminal and clip terminal, and these two kinds of sense terminals are the frequency of use higher in detecting, and these two kinds of sense terminals can satisfy most detection needs.
Furthermore, a first overcurrent protector matched with the voltage and current specification of the indicator is connected in series on the detection branch to protect the detection branch. In the detection process, the current is prevented from exceeding the approved current of the indicator, and the indicator is prevented from being burnt out.
Furthermore, the conductive circuit is connected in series with a secondary overcurrent protector which is matched with the maximum working voltage and current of the detection tool, so that the conductive circuit is protected.
Furthermore, the first overcurrent protector and the second overcurrent protector are fuse link insurance.
Further, the indicator is an indicator light. The indicating lamp is an indicator, if the lamp is on, the detection tool is electrified, the fault electric appliance circuit has a fault, and if the lamp is not on, the fault electric appliance circuit has no fault.
Furthermore, the number of the detection branches is three, each detection branch is connected with a control switch, an indicator and a first overcurrent protector in series, and the indicator on each detection branch is matched with the voltage and current specification of the overcurrent protector. In one embodiment, three detection branches are provided, each detection branch is provided with a control switch, an indicator light and a first overcurrent protector protection detection circuit, a conductive circuit is provided with a second overcurrent protector protection detection tool,
compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the required components and parts of detection frock are easily obtained, are the current material of whole car factory, and its structure is simple and easy, and technical staff can assemble out a detection frock at will, and quick preliminary locking failure reason not only practices thrift the cost but also has effectively promoted fault detection efficiency. Because the detection tool is directly connected with the components, the detection tool is extremely convenient to disassemble in use, and the components can be repaired and replaced at once after the detection tool breaks down in the use process, so that the detection tool can be used repeatedly for a long time, and the service life of the detection tool is long.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a circuit electrical appliance fault rapid detection tool provided in an embodiment of the present application;
fig. 2 is a flowchart of a use of the tool for rapidly detecting a fault of an electrical appliance of a circuit provided in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without these specific details or with a specific manner of presentation.
Because more and more low-voltage electrical equipment is used on a new energy automobile, the failure rate of the low-voltage electrical equipment of the whole automobile is continuously improved, in the conventional failure treatment of the low-voltage electrical equipment, failure confirmation and solution are usually carried out by adopting a multimeter measuring method and a part replacing and removing method, the problems of overlarge equipment input resources and low problem solution efficiency are usually caused in the actual one-line production and after-sale maintenance, particularly in the after-sale maintenance of a customer site, the problem that each after-sale person is provided with a multimeter and cannot effectively measure sometimes cannot be met, and if no part is on the site and the adjustment and extraction treatment is required, the failure treatment efficiency is greatly delayed.
The application provides an electrical apparatus fault detection frock, mainly through the current material of whole car factory, makes one set of detection frock with low costs, the structure is simple and easy, conveniently carry and use, provides in on-the-spot production personnel, after sales personnel use, when low voltage apparatus trouble appears in whole car, confirms the fault reason fast.
Aiming at the problems in the prior art, the application provides an electrical appliance fault detection tool which comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged on two sides of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the detection circuit 1 comprises a control switch and at least one detection branch, an indicator is arranged on the detection branch, and the control switch is used for controlling the conduction of the detection branch and the conductive circuit.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected, the number of detection branches is 1, a control switch and an indicator in the detection circuit 1 are connected in series, the control switch is used for opening the circuit to be conducted, in the connection mode, only one detection branch can be used for detecting a fault electric appliance with the same or similar voltage and current specification as the indicator, an indicator is arranged on the detection branch, and the control switch is used for controlling one detection branch to be conducted with the conductive circuit.
When the detection tool is electrified, the electrified part of the whole circuit is a series circuit, when the fault electric appliance has no fault, the indicator has no signal output, when the fault electric appliance has fault, the detection tool circuit is conducted, and the indicator outputs a wire number.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; two or more than two detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conductive circuit, indicators are arranged on the detection branches, the specification of the indicator on each detection branch is matched with the specification of a voltage circuit of a detected electric appliance, and the control switch is used for controlling one detection branch to be conducted with the conductive circuit.
The detection branch circuits are matched with the voltage circuit specification of the detected electric appliance according to the specific voltage current models of different indicators, and the matched detection branch circuits are selected through the control switch according to the specific voltage current models of different indicators, so that an indication signal sent by the indicator is more accurate.
When at least two detection branches are adopted, indicators with different voltage and current specifications are arranged on each detection branch, different detection branches are switched and selected through a control switch, the on-off detection of different low-voltage electrical equipment and circuits can be realized, different detection branches are selected according to the specifications of a fault electrical appliance, and any detection branch needs to be selected to be selectively conducted through the control switch, so that the use is convenient, and the operation is simple;
in one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; two or more detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conductive circuit, and two or more detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conductive circuit; each detection branch is provided with an indicator, the specification of the indicator on each detection branch is matched with the specification of a voltage circuit of a detected fault electric appliance, a control switch is arranged on the detection circuit 1, one detection branch is selected through the control switch, the control switch can be single-pole single-throw and single-pole multi-throw, when the control switch is single-pole single-throw, each branch is respectively provided with a control switch, and when the detection branch is needed to be used, the switch on the detection branch is opened; when the control switch is single-pole multi-throw, a control switch is connected in series in the detection branch, the connecting end of the control switch is connected with the conductive circuit, the contact end of the control switch is connected with the detection branch, and when the detection branch needs to be communicated, the contact of the control switch is connected with the detection branch.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the first detection end 2 and the second detection end 3 are respectively provided with at least two detection terminals of different types, the detection terminals of different types are connected in a forked parallel mode, the detection ends of the conducting circuits are forked to form a plurality of circuits, the end parts of the forked ends are connected with the detection terminals, the first detection end 2 and the second detection end 3 are connected with the detection terminals of the same quantity and the same type, and the detection terminals at the same detection end have different patterns; two or more detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conductive circuit; and each detection branch is provided with an indicator and a control switch, and the specification of the indicator on each detection branch is matched with the specification of the voltage circuit of the detected electric appliance.
Wherein, a plurality of test terminals are all connected to each sense terminal in the parallelly connected mode of bifurcation, and the test terminal kind of every sense terminal is different, like contact pin formula, clip formula, wiring formula etc. make its detection frock during operation like this, can adapt to more detection scenes, it is more convenient to use.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the conducting circuits of the first detection end 2 and the second detection end 3 are respectively branched into two circuits, the end parts of the branched ends are respectively connected with a fork terminal and a clamp terminal, and two or more detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conducting circuit; and each detection branch is provided with an indicator and a control switch, and the specification of the indicator on each detection branch is matched with the specification of the voltage circuit of the detected electric appliance.
Wherein, every sense terminal is equal to connect contact pin terminal and clip terminal, and these two kinds of sense terminals are the higher frequency of use in detecting, and these two kinds of sense terminals can satisfy most detection needs.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the short lengths of the first detection end 2 and the second detection end 3 are respectively connected with a same detection terminal, and the detection terminals are clip terminals or pin terminals; two or more detection branches are connected in parallel between a first detection end 2 and a second detection end 3 of the conductive circuit, and the control switch is used for selecting one detection branch to be conducted; the conducting circuits of the first detection end 2 and the second detection end 3 are respectively branched into two lines, and two or more detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conducting circuits; and each detection branch is provided with an indicator and a control switch, and the specification of the indicator on each detection branch is matched with the specification of the voltage circuit of the detected electric appliance.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; two or more detection branches are connected in parallel between a first detection end 2 and a second detection end 3 of the conductive circuit, and the control switch is used for selecting one detection branch to be conducted; the conducting circuits of the first detection end 2 and the second detection end 3 are respectively branched into two circuits, and the end parts of the branched ends are respectively connected with a fork terminal and a clamp terminal; each detection branch is connected in series with a first overcurrent protector which is matched with the voltage and current specification of the corresponding indicator to protect the detection branch, and the indicator is prevented from being burnt out by the fact that the current exceeds the approved current of the indicator in the detection process.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; two or more detection branches are connected in parallel between a first detection end 2 and a second detection end 3 of the conductive circuit, and the control switch is used for selecting one detection branch to be conducted; the conducting circuits of the first detection end 2 and the second detection end 3 are respectively branched into two circuits, and the end parts of the branched ends are respectively connected with a fork terminal and a clamp terminal; each detection branch is connected in series with a first overcurrent protector which is matched with the voltage and current specification of a corresponding indicator, and the conductive circuit is connected in series with a second overcurrent protector which is matched with the maximum working voltage and current of the detection tool;
the first overcurrent protector is used for protecting the detection branch, and the second overcurrent protector is used for secondary overcurrent protection in the detection process, so that the current is prevented from exceeding the approved current of the indicator, the indicator is prevented from being burnt out, and the conductive circuit is protected.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected, and the first detection end 2 and the second detection end 3 are respectively connected with a fork terminal and a clip terminal in a forked parallel mode; two or more detection branches are connected in parallel between a first detection end 2 and a second detection end 3 of the conductive circuit, and the control switch is used for selecting one detection branch to be conducted; the conducting circuits of the first detection end 2 and the second detection end 3 are respectively branched into two circuits, and the end parts of the branched ends are respectively connected with a fork terminal and a clamp terminal; each detection branch is connected in series with a fuse link insurance matched with the voltage and current specification of the corresponding indicator, and the conductive circuit is connected in series with a fuse link insurance matched with the maximum working voltage and current of the detection tool. The fuse link has the advantages of common insurance, easy obtainment and substantial price.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein a second overcurrent protector and the detection circuit are connected in series in the conductive circuit, a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the first detection end 2 and the second detection end 3 are respectively connected with a fork terminal and a clip terminal in a forked parallel mode; two or more than two detection branches are connected in parallel between the first detection end 2 and the second detection end 3 of the conductive circuit, each detection branch is connected with a control switch, an indicator lamp and a first overcurrent protector in series, the voltage specifications of the indicator lamp on each detection branch are different, the voltage specifications of the control switch, the indicator lamp and the first overcurrent protector on each detection branch are matched, and the indicator lamps of different specifications are used for detecting fault electric appliances of different specifications.
The indicating lamp is an indicator, the lamp is turned on to indicate that the detection tool is electrified, the fault electric appliance circuit has a fault, and the lamp is not turned on to indicate that the fault electric appliance circuit has no fault.
In one embodiment, the tool comprises a conductive circuit and a detection circuit 1, wherein the conductive circuit is connected with a fuse body fuse serving as a second overcurrent protector and the detection circuit 1 in series, a first detection end 2 and a second detection end 3 are respectively arranged at two ends of the conductive circuit, and the first detection end 2 and the second detection end 3 are used for being connected with a circuit to be detected; the first detection end 2 and the second detection end 3 are respectively connected with a fork terminal and a clip terminal in a forked parallel mode; the detection branch circuits are three, each detection branch circuit is serially connected with a control switch, an indicator light and a fuse body fuse serving as a first overcurrent device, the voltage specifications of the indicator light on each detection branch circuit are different, the control switch, the indicator light and the voltage specifications of the first overcurrent device on each detection branch circuit are matched, and the indicator lights with different specifications are used for fault electric appliances different from those for detection.
As shown in fig. 2, the detection tool comprises the following steps:
s101, connecting a detection device of a detection tool in parallel at two ends of a fault electrical appliance, and selecting a detection path of response according to the voltage specification of the fault electrical appliance;
s102, judging whether the indicator light is normally lighted, if so, turning to S103, and if not, turning to S105;
s103, determining a fault, and overhauling or replacing;
s104, solving the fault, and finishing the detection;
s105, detecting whether the power supply of the failed electric appliance is normally output, if not, turning to S106, and if so, turning to S107;
s106, determining abnormal overhaul or replacement of the power supply;
and S107, determining the fault of the power supply line, and repairing or replacing the power supply line.
The detection method comprises the following steps that 1, a first detection terminal and a second detection terminal are connected in parallel to be arranged on an input/output circuit of an electric appliance to be detected, and the detection terminals specifically select a contact pin detection terminal or a clip detection terminal according to needs; selecting a detection branch circuit according to the voltage range of the fault electric appliance, and opening a control switch on the selected detection branch circuit;
2. judging according to two indication conditions of the indicator light:
if the indicator light is on, the problem of the components inside the failed electrical appliance is shown, and the components need to be replaced or repaired, so that the failure is solved;
if the indicator light is not on, the power supply source and the power supply circuit of the fault electrical appliance are detected,
3. detecting a power supply of a fault electric appliance:
respectively connecting a first detection end 2 and a second detection end 3 of the detection tool with an input end and an output end of a power supply, if an indicator lamp is not on and the power supply cannot normally output, determining that the power supply fails, replacing or overhauling the power supply, and solving the failure;
and (4) the indicator light is on, the power supply normally outputs, the fault of the power supply line is determined, the power supply line is replaced or overhauled, and the fault is solved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The electric appliance fault detection tool is characterized by comprising a conductive circuit and a detection circuit,
a first detection end and a second detection end are respectively arranged on two sides of the conductive circuit and are used for being connected with a circuit to be detected;
the detection circuit comprises a control switch and at least one detection branch, an indicator is arranged on the detection branch, and the control switch is used for controlling the conduction of the detection branch and the conductive circuit.
2. The electrical fault detection tool according to claim 1, wherein when the detection circuit comprises at least two detection branches, specifications of indicators on different detection branches are different.
3. The electrical appliance fault detection tool according to claim 2, wherein when the detection circuit comprises at least two detection branches, the control switch is used for selecting one detection branch to be conducted.
4. The electric appliance fault detection tool according to claim 1, wherein the first detection end and the second detection end are respectively provided with at least two detection terminals of different types, and the detection terminals of different types are connected in a forked parallel manner.
5. The electrical appliance fault detection tool according to claim 4, wherein the first detection end and the second detection end are respectively provided with a pin terminal and a clip terminal.
6. The electrical appliance fault detection tool according to claim 1, wherein a first overcurrent protector matched with the voltage and current specification of the indicator is connected in series on the detection branch to protect the detection branch.
7. The electrical appliance fault detection tool according to claim 6, wherein the conductive circuit is connected in series with a secondary overcurrent protector adapted to the maximum working voltage and current of the detection tool to protect the conductive circuit.
8. The electrical fault detection tool according to claim 7, wherein the first and second overcurrent protectors are fuse link fuses.
9. The appliance fault detection tool according to claim 1, wherein the indicator is an indicator light.
10. The electrical appliance fault detection tool according to any one of claims 1 to 9, wherein the number of the detection branches is three, each detection branch is connected with a control switch, an indicator and a first overcurrent protector in series, and the indicator on each detection branch is adapted to the voltage and current specifications of the overcurrent protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123363475.1U CN216956223U (en) | 2021-12-28 | 2021-12-28 | Electrical apparatus fault detection frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123363475.1U CN216956223U (en) | 2021-12-28 | 2021-12-28 | Electrical apparatus fault detection frock |
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| Publication Number | Publication Date |
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| CN216956223U true CN216956223U (en) | 2022-07-12 |
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| CN202123363475.1U Active CN216956223U (en) | 2021-12-28 | 2021-12-28 | Electrical apparatus fault detection frock |
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| CN (1) | CN216956223U (en) |
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- 2021-12-28 CN CN202123363475.1U patent/CN216956223U/en active Active
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