CN211655364U - Electric shock prevention device and power distribution cabinet - Google Patents
Electric shock prevention device and power distribution cabinet Download PDFInfo
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- CN211655364U CN211655364U CN202020412577.4U CN202020412577U CN211655364U CN 211655364 U CN211655364 U CN 211655364U CN 202020412577 U CN202020412577 U CN 202020412577U CN 211655364 U CN211655364 U CN 211655364U
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- 238000009826 distribution Methods 0.000 title claims abstract description 21
- 230000002265 prevention Effects 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 210
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model discloses an electric shock prevention device and switch board, wherein, an electric shock prevention device, include: a controller (1) and a trigger mechanism (11); one end of the controller (1) is connected with a power supply, and the other end of the controller (1) is respectively connected with the alarm mechanism (2) and the breaker (4); the trigger mechanism (11) is used for triggering the controller (1); the controller (1) is used for finishing the alarm of the alarm mechanism (2) or the action of the circuit breaker (4) according to the trigger mechanism (11). When the distribution cabinet is overhauled and the like, whether the overhaul personnel judge the distribution cabinet in a wrong way or not is electrified, and the problem of electric shock is possibly caused.
Description
Technical Field
The utility model relates to an oil field electric power engineering field, a protection against electric shock device and switch board specifically says so.
Background
The oil field is used as a 24-hour production unit, and in the normal operation of an electric power system, 10kV and 35kV distribution high-voltage switch cabinets are important components of a transformer substation. As the switch cabinet is a comprehensive complete set of equipment, defects and faults can be caused in all links, and the fault treatment of the switch cabinet fault maintenance operation including mechanical locking failure, mechanism jamming and the like is the most common work with the largest workload in the normal maintenance of the power equipment. When switch board troubleshooting, especially 10kV voltage class's distribution high tension switchgear, because the voltage class is lower, do not have any sound among the electrified operation process, whether the maintainer is electrified to equipment often has the erroneous judgement, when opening distribution switchgear rear side below door, electrified exposed part of cubical switchboard below rear side equipment will cause the electric shock accident if the mistake bumps.
Disclosure of Invention
In view of this, the utility model provides an electric shock prevention device and switch board to the solution is carrying out the switch board and overhauls the during operation such as, whether the maintainer exists the erroneous judgement to the switch board is electrified, probably leads to the problem of electric shock.
In a first aspect, the utility model provides an electric shock protection device, include:
a controller and a trigger mechanism;
one end of the controller is connected with a power supply, and the other end of the controller is respectively connected with the alarm mechanism and the circuit breaker;
the trigger mechanism is used for triggering the controller;
and the controller is used for finishing the alarm of the alarm mechanism or the action of the breaker according to the trigger mechanism.
Preferably, the controller includes:
a stroke mechanism;
one end of the stroke mechanism is connected with the trigger mechanism;
the trigger mechanism drives the stroke mechanism to move, so that the alarm mechanism or the circuit breaker is connected with the power supply.
Preferably, the controller further includes:
the alarm device comprises a first contact, a second contact, an alarm contact and a breaker contact;
one ends of the first contact and the second contact are respectively connected with the power supply, and one ends of the alarm contact and the breaker contact are respectively connected with the alarm mechanism and the breaker;
the stroke mechanism is driven by the trigger mechanism to complete the connection of the other end of the first contact with the other end of the alarm contact, and the alarm mechanism gives an alarm;
the stroke mechanism is driven by the trigger mechanism to complete connection of the other end of the second contact with the other end of the breaker contact, and the breaker acts.
Preferably, the stroke mechanism further comprises: a trip lever;
one end of the stroke rod is connected with the trigger mechanism;
the other end of the travel rod is provided with a connecting mechanism, and the connecting mechanism can enable the alarm mechanism or the circuit breaker to be connected with the power supply.
Preferably, the connecting mechanism is a C-shaped structure, and the C-shaped arms on two sides of the C-shaped structure are respectively provided with a first closing-in port and a second closing-in port;
the first closing-in and the second closing-in are used for connecting the alarm mechanism or the circuit breaker with the power supply.
Preferably, the controller has a housing;
the other end of the stroke mechanism penetrates into the shell, and a first thrust mechanism is arranged at the other end of the stroke mechanism and the inner side of the shell;
the first thrust mechanism is used for pushing the stroke mechanism to move.
Preferably, the controller has a housing;
the other end of the stroke mechanism penetrates into the shell, and a second thrust mechanism is arranged at one end of the stroke mechanism and the outer side of the shell;
and the second thrust mechanism is used for pushing the stroke mechanism to move.
Preferably, one end of the stroke mechanism is provided with a convex edge structure, the lower side of the convex edge structure is connected with the trigger mechanism, and the upper side of the convex edge structure and the outer side of the shell are provided with the second thrust mechanism.
Preferably, there is an on-off mechanism between one end of the controller and the power supply; the on-off mechanism is used for connecting or disconnecting the controller and the power supply;
preferably, the trigger mechanism is a bolt.
In a second aspect, the utility model provides a power distribution cabinet, include: like foretell electric shock prevention device, trigger mechanism installs on the cabinet door of switch board.
The utility model discloses following beneficial effect has at least:
the utility model provides an electric shock prevention device and switch board to the solution is carrying out the switch board and overhauls the during operation such as, whether the maintainer has the erroneous judgement to the switch board is electrified, probably leads to the problem of electric shock.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of an electric shock preventing device according to an embodiment of the present invention.
In fig. 1: the device comprises a controller-1, an alarm mechanism-2, a travel rod-3, a circuit breaker-4, a connecting mechanism-5, a first thrust mechanism-61, a second thrust mechanism-62, a first contact-71, a second contact-72, an alarm contact-8, a circuit breaker contact-9, an on-off mechanism 10 and a trigger mechanism-11.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Fig. 1 is a schematic structural view of an electric shock preventing device according to an embodiment of the present invention. As shown in fig. 1, an electric shock preventing apparatus includes: a controller 1 and a trigger mechanism 11; one end of the controller 1 is connected with a power supply, and the other end of the controller 1 is respectively connected with the alarm mechanism 2 and the breaker 4; a trigger mechanism 11 for triggering the controller 1; and the controller 1 is used for finishing the alarm of the alarm mechanism 2 or the action of the breaker 4 according to the trigger mechanism 11. When the distribution cabinet is overhauled and the like, whether the overhaul personnel judge the distribution cabinet in a wrong way or not is electrified, and the problem of electric shock is possibly caused.
In the embodiment of the present invention, the circuit breaker 4 is a switching device capable of closing, carrying, and opening/closing the current under the normal circuit condition and closing, carrying, and opening/closing the current under the abnormal circuit condition within a predetermined time. The breaker 4 is arranged in an electric circuit of the original electric equipment, and the tripping coil of the breaker 4 controls the breaker to act to cut off the electric circuit.
In the embodiment of the present invention, the power source can be a high voltage power source of 10kV and 35kV, and the power source of the present invention can also be a 220V or 380V power source.
In the embodiment of the present invention, the alarm mechanism 2 may be one or more of an audible alarm, a voice alarm, or an optical alarm.
The utility model discloses an in the embodiment, circuit breaker 4 is connected with consumer, after trigger mechanism 11 received trigger signal, trigger mechanism 11 triggered control ware 1 was reported to the police by alarm mechanism 2 and is indicateed, then circuit breaker 4 action, the consumer of disconnection and circuit breaker 4 being connected. When the distribution cabinet is overhauled and the like, whether the overhaul personnel judge the distribution cabinet in a wrong way or not is electrified, and the problem of electric shock is possibly caused.
In the present invention and fig. 1, a controller 1 includes: a stroke mechanism; one end of the stroke mechanism is connected with the trigger mechanism 11; the trigger mechanism 11 drives the stroke mechanism to move, so that the alarm mechanism 2 or the circuit breaker 4 is connected with a power supply.
In the embodiment of the present invention, after the trigger mechanism 11 receives the trigger signal (stress signal), the trigger mechanism 11 drives the stroke mechanism to move; when the stroke mechanism moves to the alarm mechanism 2, the alarm mechanism 2 is connected with a power supply, and the alarm mechanism 2 carries out alarm prompt; after the stroke mechanism continues to move, the alarm mechanism 2 is disconnected with the power supply, the alarm mechanism 2 stops giving an alarm, when the stroke mechanism moves to the circuit breaker 4, the circuit breaker 4 is connected with the power supply, the circuit breaker 4 acts, and the electric equipment connected with the circuit breaker 4 is disconnected.
In the present invention and fig. 1, the controller 1 further includes: a first contact 71, a second contact 72, an alarm contact 8 and a breaker contact 9; one ends of the first contact 71 and the second contact 72 are respectively connected with a power supply, and one ends of the alarm contact 8 and the breaker contact 9 are respectively connected with the alarm mechanism 2 and the breaker 4; the stroke mechanism is driven by the trigger mechanism 11 to complete the connection of the other end of the first contact 71 and the other end of the alarm contact 8, and the alarm mechanism 2 gives an alarm; the stroke mechanism is driven by the trigger mechanism 11 to complete the connection of the other end of the second contact 72 with the other end of the breaker contact 9, and the breaker 4 acts.
In the embodiment of the present invention, the first contact 71 and the alarm contact 8 are parallel contacts; the second contacts 72 and the breaker contacts 9 are parallel contacts.
In the embodiment of the present invention, after the trigger mechanism 11 receives the trigger signal, the trigger mechanism 11 drives the stroke mechanism to move; when the stroke mechanism moves to the other end of the first contact 71 and the other end of the alarm contact 8, the alarm mechanism 2 is connected with a power supply, and the alarm mechanism 2 gives an alarm prompt; after the stroke mechanism continues to move, the alarm mechanism 2 is disconnected from the power supply, the alarm mechanism 2 stops alarming, when the stroke mechanism moves to the other end of the second contact 72 and the other end of the breaker contact 9, the breaker 4 is connected with the power supply, the breaker 4 acts, and the electric equipment connected with the breaker 4 is disconnected.
In the present invention and fig. 1, the stroke mechanism further includes: a trip lever 3; one end of the travel rod 3 is connected with the trigger mechanism 11; the other end of the travel bar 3 is provided with a connecting mechanism 5, and the connecting mechanism 5 can connect the alarm mechanism 2 or the circuit breaker 4 with a power supply.
In the embodiment of the present invention, the connecting mechanism 5 and the travel rod 3 may be an integral structure, and when the trigger mechanism 11 receives the trigger signal, the trigger mechanism 11 drives the travel rod 3 to move; when the travel rod 3 moves to the other end of the first contact 71 and the other end of the alarm contact 8, the connecting mechanism 5 is communicated with the other end of the first contact 71 and the other end of the alarm contact 8, the alarm mechanism 2 is connected with a power supply, and the alarm mechanism 2 gives an alarm prompt; after the travel rod 3 continues to move, the alarm mechanism 2 is disconnected from the power supply, the alarm mechanism 2 stops giving an alarm, when the travel rod 3 moves to the other end of the second contact 72 and the other end of the breaker contact 9, the connecting mechanism 5 is communicated with the other end of the second contact 72 and the other end of the breaker contact 9, the breaker 4 is connected with the power supply, and the breaker 4 acts to disconnect the electric equipment connected with the breaker 4.
In the present invention and fig. 1, the connecting mechanism 5 is a C-shaped structure, and the C-shaped arms on both sides of the C-shaped structure are respectively provided with a first closing-in port and a second closing-in port; the first closing-in and the second closing-in are used for connecting the alarm mechanism 2 or the breaker 4 with a power supply.
In the embodiment of the present invention, when the stroke rod 3 moves to the other end of the first contact 71 and the other end of the alarm contact 8, the first closing-in and the second closing-in of the connection mechanism 5 respectively contact the other end of the first contact 71 and the other end of the alarm contact 8, and the alarm mechanism 2 is connected to the power supply; when the stroke rod 3 moves to the other end of the second contact 72 and the other end of the breaker contact 9, the first closing-in and the second closing-in of the connecting mechanism 5 are already separated from the other end of the first contact 71 and the other end of the alarm contact 8, the first closing-in and the second closing-in of the connecting mechanism 5 respectively contact the other end of the second contact 72 and the other end of the breaker contact 9, and the breaker 4 is connected with a power supply.
The utility model discloses an in the embodiment, the one end of stroke pole 3 is installed inside controller 1, and stroke pole 3 can be according to stroke pole 3's both ends direction round trip movement. When the utility model discloses be in the state that is not opened, stroke pole 3 is in the inside one end of controller 1, supports inside controller 1.
In the present invention and fig. 1, the controller 1 has a housing; the other end of the travel mechanism penetrates into the shell, and a first thrust mechanism 61 is arranged at the other end of the travel mechanism and the inner side of the shell; and the first thrust mechanism 61 is used for pushing the stroke mechanism to move.
In an embodiment of the present invention, the first thrust mechanism 61 may be an elastic member, such as a spring. The elastic piece is sleeved at the other end of the stroke mechanism. If the other end of the stroke mechanism has the connecting mechanism 5, one end surface of the elastic member (the first thrust mechanism 61) contacts one side of the connecting mechanism 5, and the other end surface of the elastic member (the first thrust mechanism 61) contacts the inside of the housing. Because the trigger mechanism 11 is connected with one end of the stroke mechanism in a propping manner, the first thrust mechanism 61 is in a pressing state at the moment, and when the force of the trigger mechanism 11 on the stroke mechanism is reduced, the first thrust mechanism 61 restores to deform to push the stroke mechanism to move, so that the trigger mechanism 11 finishes the alarm of the alarm mechanism 2 or the action of the circuit breaker 4.
In the present invention and fig. 1, the controller 1 has a housing; the other end of the stroke mechanism penetrates into the shell, and a second thrust mechanism 62 is arranged at one end of the stroke mechanism and the outer side of the shell; and a second thrust mechanism 62 for pushing the stroke mechanism to move.
In the present invention and fig. 1, one end of the stroke mechanism has a convex edge structure, the lower side of the convex edge structure is connected to the trigger mechanism 11, and the upper side of the convex edge structure and the outer side of the housing have a second thrust mechanism 62.
In an embodiment of the present invention, the second pushing mechanism 62 may be an elastic member, such as a spring. A second thrust mechanism 62 is journaled at one end of the travel mechanism. One side end surface of the second thrust mechanism 62 is in contact with the upper side of the ledge structure, and the other side end surface of the second thrust mechanism 62 is in contact with the outside of the housing. Because the trigger mechanism 11 is connected with one end of the stroke mechanism in a propping manner, the second thrust mechanism 62 is in a pressing state at the moment, and when the force of the trigger mechanism 11 on the stroke mechanism is reduced, the second thrust mechanism 62 recovers to deform to push the stroke mechanism to move, so that the trigger mechanism 11 can complete the alarm of the alarm mechanism 2 or the action of the circuit breaker 4.
In the present invention and fig. 1, an on-off mechanism 10 is provided between one end of the controller 1 and the power supply; and an on-off mechanism 10 for connecting or disconnecting the controller 1 to or from a power source.
In embodiments of the present invention, the on-off mechanism 10 may be a switch, a contactor, or a protective platen. The protection clamp plate is used for cutting off the connection between the controller 1 and a power supply, and when the electric shock prevention device is not needed, the protection clamp plate can be detached to disconnect a circuit.
In the present invention and fig. 1, the trigger mechanism 11 may be a bolt fixed at one end of the stroke mechanism.
And simultaneously, the utility model discloses still provide a switch board, include: like the above-mentioned electric shock prevention device, the trigger mechanism 11 is installed on the cabinet door of the power distribution cabinet.
The utility model discloses an in the embodiment, install on the cabinet door of switch board and be used for fixed bolt (trigger mechanism 11), the one end that stroke pole 3 is in 1 outside of controller is supported and is in the inside one end of switch board at bolt (trigger mechanism 11), and when the cabinet door was not opened, the spring (first thrust unit 61, second thrust unit 62) on the stroke pole 3 was in compression state, and coupling mechanism 5 on the stroke pole 3 was in the one side that is close to 1 bottom of controller this moment.
When carrying out maintenance operation, open the distribution cabinet door and need twist the bolt (trigger mechanism 11) that is used for fixed cabinet door, when bolt (trigger mechanism 11) outwards removed, upwards bounce drive stroke pole 3 and coupling mechanism 5 towards the direction of cabinet door and remove (first thrust mechanism 61, second thrust mechanism 62) on the stroke pole 3, first contact two contacts nearer apart from controller 1 bottom when the both ends of coupling mechanism 5 move forward, communicate the circuit return circuit between alarm contact 8 and the first contact 71, alarm mechanism 2 begins to report to the police.
At this time, when the bolt 11 is continuously screwed and the stroke lever 3 continues to move in the direction of the cabinet door, the connection mechanism 5 moves forward, the circuit between the breaker contact 9 and the second contact 72 is connected, and the breaker 4 operates to cut off the power supply of the connected device.
The utility model discloses an in the embodiment, alarm mechanism 2 can install outside the switch board, through line connection controller 1. When the alarm mechanism 2 is connected with a power supply, the controller 1 controls the voice alarm to send out voice alarm and/or controls the alarm lamp of the light alarm to light. The voice warning can be voice prompt such as 'danger of electricity, forbidding opening', or sending warning sounds such as buzzing tones and the like. The light can be normally on or twinkle to prompt and alarm.
The utility model discloses can prevent effectively that maintenance personal from leading to the problem of electric shock because of misoperation in the work, upper place before the high cabinet of distribution, below and rear side below cabinet door leaf can connect in parallel with the closed many places installation trigger switch of door frame, no matter under the electrified condition of maintainer, when the cabinet door was opened by force to which side violates normal procedure from the switch board, circuit breaker 4 all can break off in the high-voltage board, avoids the emergence of the personal casualty accident of electric shock.
The electric shock prevention device has the advantages of easiness in installation, simple structure, small size, safety, reliability and the like, and the appearance of the power distribution cabinet is not changed after installation without replacing the power distribution cabinet. And the normal operation of the power distribution cabinet is not influenced. The potential safety hazard of personal electric shock caused in the maintenance of the distribution equipment can be avoided, and the safe operation of a power grid is guaranteed. Good expansibility and suitability for large-scale installation.
The above embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An electric shock protection device, comprising:
a controller (1) and a trigger mechanism (11);
one end of the controller (1) is connected with a power supply, and the other end of the controller (1) is respectively connected with the alarm mechanism (2) and the breaker (4);
the trigger mechanism (11) is used for triggering the controller (1);
the controller (1) is used for finishing the alarm of the alarm mechanism (2) or the action of the circuit breaker (4) according to the trigger mechanism (11).
2. The electric shock protection device according to claim 1, wherein the controller (1) comprises:
a stroke mechanism;
one end of the stroke mechanism is connected with the trigger mechanism (11);
the trigger mechanism (11) drives the stroke mechanism to move, so that the alarm mechanism (2) or the circuit breaker (4) is connected with the power supply.
3. The electric shock protection device according to claim 2, wherein the controller (1) further comprises:
a first contact (71), a second contact (72), an alarm contact (8) and a breaker contact (9);
one ends of the first contact (71) and the second contact (72) are respectively connected with the power supply, and one ends of the alarm contact (8) and the breaker contact (9) are respectively connected with the alarm mechanism (2) and the breaker (4);
the stroke mechanism is driven by the trigger mechanism (11) to complete the connection of the other end of the first contact (71) and the other end of the alarm contact (8), and the alarm mechanism (2) gives an alarm;
the stroke mechanism is driven by the trigger mechanism (11) to complete the connection of the other end of the second contact (72) and the other end of the breaker contact (9), and the breaker (4) acts.
4. The electric shock prevention apparatus according to claim 2 or 3, wherein the stroke mechanism comprises: a trip lever (3);
one end of the stroke rod (3) is connected with the trigger mechanism (11);
the other end of the travel rod (3) is provided with a connecting mechanism (5), and the connecting mechanism (5) can enable the alarm mechanism (2) or the circuit breaker (4) to be connected with the power supply.
5. The electric shock protection device according to claim 4, wherein the connection mechanism (5) is a C-shaped structure, and the C-shaped arms on two sides of the C-shaped structure are respectively provided with a first closing-in port and a second closing-in port;
the first closing-in opening and the second closing-in opening are used for enabling the alarm mechanism (2) or the circuit breaker (4) to be connected with the power supply.
6. The electric shock prevention device according to claim 2 or 3 or 5, wherein the controller (1) has a housing;
the other end of the stroke mechanism penetrates into the shell, and a first thrust mechanism (61) is arranged at the other end of the stroke mechanism and the inner side of the shell;
the first thrust mechanism (61) is used for pushing the stroke mechanism to move.
7. The electric shock prevention device according to claim 2 or 3 or 5, wherein the controller (1) has a housing;
the other end of the stroke mechanism penetrates into the shell, and a second thrust mechanism (62) is arranged at one end of the stroke mechanism and the outer side of the shell;
the second thrust mechanism (62) is used for pushing the stroke mechanism to move.
8. The electric shock protection device according to claim 7, wherein one end of the stroke means has a ledge structure, the underside of which is connected to the trigger means (11), and the upper side of which and the outside of the housing has the second thrust means (62).
9. An electric shock protection device according to any one of claims 1 to 3, 5 or 8,
an on-off mechanism (10) is arranged between one end of the controller (1) and the power supply; the on-off mechanism (10) is used for connecting or disconnecting the controller (1) and the power supply;
and/or the trigger mechanism (11) is a bolt.
10. A power distribution cabinet, comprising: the electric shock prevention device as set forth in any one of claims 1 to 9, wherein:
the trigger mechanism (11) is installed on a cabinet door of the power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412577.4U CN211655364U (en) | 2020-03-27 | 2020-03-27 | Electric shock prevention device and power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412577.4U CN211655364U (en) | 2020-03-27 | 2020-03-27 | Electric shock prevention device and power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211655364U true CN211655364U (en) | 2020-10-09 |
Family
ID=72686905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020412577.4U Active CN211655364U (en) | 2020-03-27 | 2020-03-27 | Electric shock prevention device and power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211655364U (en) |
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2020
- 2020-03-27 CN CN202020412577.4U patent/CN211655364U/en active Active
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