CN220121698U - Switching-on/off indicating device and GIS for three-phase box-separating type isolation grounding switch - Google Patents
Switching-on/off indicating device and GIS for three-phase box-separating type isolation grounding switch Download PDFInfo
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- CN220121698U CN220121698U CN202320467339.7U CN202320467339U CN220121698U CN 220121698 U CN220121698 U CN 220121698U CN 202320467339 U CN202320467339 U CN 202320467339U CN 220121698 U CN220121698 U CN 220121698U
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- 238000002955 isolation Methods 0.000 title claims description 62
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- 238000009434 installation Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 description 14
- 230000009471 action Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
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Abstract
The utility model provides a switching-on/off indicating device for a three-phase box-separating type isolating grounding switch and a GIS (gas insulated switchgear), wherein the switching-on/off indicating device comprises a device mounting shaft, the device mounting shaft is in transmission connection with a transmission shaft of a gear box when in use, an isolating indicating piece and a grounding indicating piece are fixedly arranged on the device mounting shaft, the isolating indicating piece is provided with an isolating switching-on position and an isolating switching-off position on the swinging stroke, the grounding indicating piece is provided with a grounding switching-on position and a grounding switching-off position on the swinging stroke, the switching-on/off indicating device also comprises a travel switch correspondingly arranged at the isolating switching-on position, the isolating switching-off position, the grounding switching-on position and the grounding switching-off position, and the transmission ratio between the device mounting shaft and the transmission shaft is not less than 2.13. The switching-on indicating device provided by the utility model can effectively solve the technical problem that the switching-on indicating device in the prior art cannot simultaneously indicate the switching-on and switching-off positions of the isolating switch and the grounding switch.
Description
Technical Field
The utility model relates to a switching-on/off indicating device for a three-phase split-box type isolation grounding switch and a GIS, and belongs to the technical field of GIS.
Background
At present, as shown in fig. 1, an operating mechanism 1 of a three-phase box-separating type isolating grounding switch is directly connected with a gear box 4 of a middle phase 2 in a transmission way, two side-phase 3 gear boxes 4 are connected with the gear boxes 4 of the middle phase 2 through shaft couplings 5, so that the gear boxes 4 of the middle phase 2 drive transmission shafts on the gear boxes 4 of the two side-phase 3 to synchronously rotate through the shaft couplings 5, and the operating mechanism 1 drives a three-phase isolating switch or a grounding switch to perform opening and closing actions. As shown in fig. 2, the shaft coupling 5 mainly comprises a transition joint 6, a sliding joint 7 and a shaft connecting tube 8, the transmission shaft of the gear box 4 of the side phase 3 is connected with the transition joint 6 through a shaft pin 9, the transition joint 6 is connected with the sliding joint 7 through the shaft pin 9, the shaft pin 9 is limited through a hoop 10, the sliding joint 7 is connected with the shaft connecting tube 8 through a clamping groove structure, the outside is limited through the hoop 10, and in the opening and closing operation process of the isolating grounding switch, the shaft coupling 5 and the sliding joint 7 are in meshed transmission through the clamping groove structure.
The three-phase box-separating type isolation grounding switch has some problems in the use process, and specifically comprises the following steps: because the shaft connection structure is complex, the transmission parts between the gear boxes of each phase are more, and failure easily occurs in the use process, so that three-phase switching-on and switching-off cannot be synchronized, a device is needed to detect the running state of each phase, and particularly, the side phase far away from the operating mechanism is needed. In the prior art, a plurality of opening and closing position detection devices exist, for example, chinese patent application publication number CN202339858U and publication date 2012.07.18 disclose an outdoor isolating switch opening and closing position accurate detection device, which comprises a first travel block, a second travel block, a first travel switch, a second travel switch, a first travel switch fixing block and a second travel switch fixing block, wherein the first travel switch and the second travel switch are mutually perpendicular and are arranged on the same plane of an output shaft of a switch body, the first travel switch fixing block and the second travel switch fixing block are respectively arranged on two sides of the output shaft of the switch body, and the first travel switch and the second travel switch are respectively arranged on the corresponding fixing blocks. When the output shaft of the switch body rotates to a closing position, the first travel block is driven to press the first travel switch, and the first travel switch sends a closing signal; when the output shaft of the switch body rotates to the opening position, the second travel block is driven to press the second travel switch, and the second travel switch sends out an opening signal. However, the detection device can only indicate the opening and closing positions of the isolating switch, and cannot indicate the opening and closing positions of the isolating switch and the grounding switch at the same time.
Disclosure of Invention
The utility model aims to provide a switching-on/off indicating device for a three-phase box-separating type isolating grounding switch, which aims to solve the technical problem that the switching-on/off indicating device in the prior art cannot simultaneously indicate the switching-on/off positions of the isolating switch and the grounding switch. Meanwhile, the utility model also provides a GIS to solve the problems.
The utility model discloses a switching-on/off indicating device for a three-phase split-box type isolation grounding switch, which adopts the following technical scheme:
the three-phase box-separating type isolating and grounding switch opening and closing indicating device comprises a device mounting shaft, wherein the device mounting shaft is in transmission connection with a transmission shaft of a gear box when in use, an isolating indicating piece and a grounding indicating piece are fixedly arranged on the device mounting shaft, the isolating indicating piece is provided with an isolating closing position and an isolating opening position on the swinging stroke of the isolating indicating piece, the grounding indicating piece is provided with a grounding closing position and a grounding opening position on the swinging stroke of the grounding indicating piece, the opening and closing indicating device further comprises a travel switch which is correspondingly arranged at the isolating closing position, the isolating opening position, the grounding closing position and the grounding opening position, and the transmission ratio between the device mounting shaft and the transmission shaft is not less than 2.13.
The utility model provides a switching-on/off indicating device for a three-phase split box type isolation grounding switch, wherein when the grounding switch is switched on/off, a transmission shaft of a gear box drives the grounding switch to perform switching-on/off action, a device mounting shaft drives a grounding indicating piece to swing to a grounding switching-on position or a grounding switching-off position, and a travel switch at a corresponding position is triggered to send out switching-on/off signals; when the isolating switch is switched on and off, the transmission shaft of the gearbox drives the isolating switch to conduct switching on and off actions, the device mounting shaft drives the isolating indicator to swing to an isolating switch-on position or an isolating switch-off position, and a travel switch at a corresponding position is triggered to send out switching on and off signals; when the isolating grounding switch is opened, the movable contact is positioned at the middle position. The isolation switch-on moving contact moves upwards to switch on in place, the transmission shaft of the side phase gearbox rotates by 446 degrees clockwise, after the grounding switch-on moving contact moves downwards to the switch-on position, the transmission shaft of the side phase gearbox rotates by 320 degrees anticlockwise, in order to ensure that a cam on the device mounting shaft does not trigger a micro switch repeatedly in the switch-on and switch-off process after conversion, the rotation angle of the device mounting shaft is required to be ensured not to exceed 360 degrees, and the transmission ratio is required to be not less than 776/360=2.13.
Further, the isolation indicator and the ground indicator are arranged at intervals in the axial direction of the device mounting shaft.
The beneficial effects are that: the isolating indicator and the grounding indicator are arranged in such a way that the travel switch is conveniently arranged, and the space of the device mounting shaft in the axial direction can be fully utilized.
Further, at least one of the isolation indicator and the ground indicator is formed by a cam.
The beneficial effects are that: the cam has simple structure and convenient processing.
Further, the device mounting shaft is in geared connection with the drive shaft.
The beneficial effects are that: the device mounting shaft is connected with the transmission shaft through gear transmission, and has the characteristics of compact structure and simple assembly.
Further, the device mounting shaft is arranged in parallel with the drive shaft.
The beneficial effects are that: the device mounting shaft is arranged in parallel with the transmission shaft, so that the size of the indicating device can be reduced, and the compactness of the indicating device is further improved.
Further, the opening and closing indicating device also comprises a device mounting box for mounting a device mounting shaft, and a connecting structure for connecting with the gear box is arranged on the device mounting box.
The beneficial effects are that: when the device is used, the device mounting box is connected with the gear box through the connecting structure, and the device mounting box can provide protection for the device mounting shaft, so that the durability of the device is improved.
Further, the device mounting box is provided with an observation window for observing the states of the isolation indicator and the grounding indicator.
The beneficial effects are that: during inspection, the states of the isolation indicator and the grounding indicator can be observed in real time through the observation window, and the inspection is very convenient.
Further, the connecting structure comprises a connecting plate, bolt through holes are formed in the connecting plate, and the bolts penetrate through the bolt through holes to be fixed with the gear box.
The beneficial effects are that: the device mounting box is more convenient to fixedly connect with the gear box through bolts.
The GIS adopts the following technical scheme:
the GIS comprises a three-phase box-separating type isolation grounding switch, wherein a switching-on/off indicating device is arranged on the three-phase box-separating type isolation grounding switch, the switching-on/off indicating device for the three-phase box-separating type isolation grounding switch comprises a device mounting shaft, the device mounting shaft is in transmission connection with a transmission shaft of a gear box when in use, an isolation indicating piece and a grounding indicating piece are fixedly arranged on the device mounting shaft, the isolation indicating piece is provided with an isolation switching-on position and an isolation switching-off position on the swing stroke, the grounding indicating piece is provided with a grounding switching-on position and a grounding switching-off position on the swing stroke, the switching-on/off indicating device further comprises a travel switch which is correspondingly arranged at the isolation switching-on position, the isolation switching-off position, the grounding switching-on position and the grounding switching-off position, and the transmission ratio between the device mounting shaft and the transmission shaft is not less than 2.13.
The utility model creatively provides a GIS, when a grounding switch is switched on and off, a transmission shaft of a gear box drives the grounding switch to perform switching on and off actions, a device mounting shaft drives a grounding indicator to swing to a grounding switching-on position or a grounding switching-off position, and a travel switch at a corresponding position is triggered to send out switching-on signals; when the isolating switch is switched on and off, the transmission shaft of the gearbox drives the isolating switch to conduct switching on and off actions, the device mounting shaft drives the isolating indicator to swing to an isolating switch-on position or an isolating switch-off position, and a travel switch at a corresponding position is triggered to send out switching on and off signals; when the isolating grounding switch is opened, the movable contact is positioned at the middle position. The isolation switch-on moving contact moves upwards to switch on in place, the transmission shaft of the side phase gearbox rotates by 446 degrees clockwise, after the grounding switch-on moving contact moves downwards to the switch-on position, the transmission shaft of the side phase gearbox rotates by 320 degrees anticlockwise, in order to ensure that a cam on the device mounting shaft does not trigger a micro switch repeatedly in the switch-on and switch-off process after conversion, the rotation angle of the device mounting shaft is required to be ensured not to exceed 360 degrees, and the transmission ratio is required to be not less than 776/360=2.13.
Further, the isolation indicator and the ground indicator are arranged at intervals in the axial direction of the device mounting shaft.
The beneficial effects are that: the isolating indicator and the grounding indicator are arranged in such a way that the travel switch is conveniently arranged, and the space of the device mounting shaft in the axial direction can be fully utilized.
Further, at least one of the isolation indicator and the ground indicator is formed by a cam.
The beneficial effects are that: the cam has simple structure and convenient processing.
Further, the device mounting shaft is in geared connection with the drive shaft.
The beneficial effects are that: the device mounting shaft is connected with the transmission shaft through gear transmission, and has the characteristics of compact structure and simple assembly.
Further, the device mounting shaft is arranged in parallel with the drive shaft.
The beneficial effects are that: the device mounting shaft is arranged in parallel with the transmission shaft, so that the size of the indicating device can be reduced, and the compactness of the indicating device is further improved.
Further, the opening and closing indicating device also comprises a device mounting box for mounting a device mounting shaft, and a connecting structure for connecting with the gear box is arranged on the device mounting box.
The beneficial effects are that: when the device is used, the device mounting box is connected with the gear box through the connecting structure, and the device mounting box can provide protection for the device mounting shaft, so that the durability of the device is improved.
Further, the device mounting box is provided with an observation window for observing the states of the isolation indicator and the grounding indicator.
The beneficial effects are that: during inspection, the states of the isolation indicator and the grounding indicator can be observed in real time through the observation window, and the inspection is very convenient.
Further, the connecting structure comprises a connecting plate, bolt through holes are formed in the connecting plate, and the bolts penetrate through the bolt through holes to be fixed with the gear box.
The beneficial effects are that: the device mounting box is more convenient to fixedly connect with the gear box through bolts.
Drawings
FIG. 1 is a schematic diagram of a three-phase split-box type isolated grounding switch in the prior art;
FIG. 2 is a schematic illustration of the structure of the shaft coupling of FIG. 1;
FIG. 3 is a schematic diagram of a three-phase split-box type isolated grounding switch according to the present utility model;
fig. 4 is a schematic structural diagram of the opening/closing indicating device in fig. 3.
The names of the corresponding components in the figures are:
in fig. 1 to 2: 1. an operating mechanism; 2. a medium phase; 3. a side phase; 4. a gear box; 5. a shaft coupling; 6. a transition joint; 7. a sliding joint; 8. a shaft connecting tube; 9. a shaft pin; 10. a hoop;
fig. 3 to 4: 100. three-phase box-separating type isolation grounding switch; 101. an opening and closing indicating device; 102. a device mounting shaft; 103. a transmission shaft; 104. an isolation indicator; 105. a ground indicator; 106. a gear; 107. a device mounting box; 108. a gear box; 109. a first travel switch; 110. a second travel switch; 111. a third travel switch; 112. and a fourth travel switch.
Detailed Description
The present utility model is described in further detail below with reference to examples.
Example 1 of GIS in the present utility model:
as shown in fig. 3, the GIS provided in this embodiment includes a three-phase box-separating type isolating and grounding switch 100, a switch-on/switch-off indicating device 101 is disposed on the three-phase box-separating type isolating and grounding switch 100, the switch-on/switch-off indicating device 101 includes a device mounting shaft 102, the device mounting shaft 102 is in transmission connection with a transmission shaft 103 of a corresponding gear box 108, and an isolating indicator 104 and a grounding indicator 105 are fixedly disposed on the device mounting shaft 102.
In this embodiment, as shown in fig. 4, an isolation indicator 104 and a ground indicator 105 are fixed on a device mounting shaft 102, the device mounting shaft 102 drives the isolation indicator 104 and the ground indicator 105 to swing through rotation, the isolation indicator 104 has an isolation switch-on position and an isolation switch-off position on a swing stroke, and the ground indicator 105 has a ground switch-on position and a ground switch-off position on a swing stroke. When the transmission shaft 103 of the gear box 108 drives the grounding switch to perform opening and closing actions, the grounding indicator 105 swings to the grounding closing position when the grounding switch moves to the closing position, and the grounding indicator 105 swings to the grounding opening position when the grounding switch moves to the opening position; when the transmission shaft 103 of the gear box 108 drives the isolating switch to perform opening and closing actions, the isolating indicator 104 swings to an isolating closing position when the isolating switch moves to a closing position, and the isolating indicator 104 swings to an isolating opening position when the isolating switch moves to an opening position.
In this embodiment, as shown in fig. 4, a first travel switch 109 is installed at the ground opening position, a second travel switch 110 is installed at the isolation opening position, a third travel switch 111 is installed at the ground closing position, and a fourth travel switch 112 is installed at the ground closing position. To trigger the corresponding travel switch when the ground indicator 105 and the isolation indicator 104 swing to the corresponding positions, and further to send out the opening and closing signals.
In this embodiment, as shown in fig. 4, the isolation indicator 104 and the grounding indicator 105 are disposed at a set angle in the circumferential direction of the device mounting shaft 102, so that when the isolating switch is in the closing position, the grounding indicator 105 is in the grounding opening position, and when the grounding switch is in the closing position, the isolation indicator 104 is in the isolating opening position, so that the indication device can display the states of the grounding switch and the isolating switch at the same time. In addition, for the convenience of processing, the isolation indicator 104 and the ground indicator 105 are both made of cams, and since the swing stroke of the ground indicator 105 is greater than the swing stroke of the ground indicator 105 when the isolating switch is switched on and off, the ground indicator 105 is made of a large cam, and the isolation indicator 104 is made of a small cam, so that the state of the ground switch and the state of the isolating switch can be displayed simultaneously by the indicating device.
In the present embodiment, in order to make full use of the space of the device mounting shaft 102 in the axial direction, as shown in fig. 4, the isolation indicator 104 and the ground indicator 105 are arranged at intervals in the axial direction of the device mounting shaft 102. The device mounting shaft 102 is arranged parallel to the drive shaft 103 and the two are in driving connection via a gear 106.
In this embodiment, to avoid repeated triggering of the travel switch by the isolation indicator 104 or the ground indicator 105, the gear ratio between the device mounting shaft 102 and the drive shaft 103 is not less than 2.13. Specifically, the two pairs of travel switches on the device mounting shaft 102 correspond to the isolation opening and closing positions and the grounding opening and closing positions, respectively. The moving contact corresponding to the isolating switch and the grounding switch can only be positioned at one position of the disconnecting switch (the isolating switch-off position and the grounding switch-off position), the isolating switch-on position and the grounding switch-on position at the same time. The indication device is to display the states of the isolating switch and the grounding switch at the same time, and the isolating indicator 104 is required to continuously trigger the first travel switch 109 when the isolating switch is closed, and the grounding indicator is required to continuously trigger the second travel switch 110 when the grounding switch is closed. The width of the arc-shaped surface on the grounding indicator piece is 446mm, and when the isolating grounding switch is opened, the movable contact is positioned at the middle position. The isolation switching-on moving contact moves upwards to switch on in place, the transmission shaft of the side phase gearbox rotates 446 degrees clockwise, after the grounding switching-on moving contact moves downwards to the switching-on position, the transmission shaft of the side phase gearbox rotates 320 degrees anticlockwise, and in order to ensure that a cam on the installation shaft of the device after conversion does not trigger a micro switch repeatedly in the switching-on and switching-off process, the transmission ratio is required to be larger than (766+446)/360=3.37. In this embodiment, the transmission ratio between the device mounting shaft 102 and the transmission shaft 103 is 4.
To supplement this, the inventor is required to supplement this, the rotation amount of the device mounting shaft 102 is not more than 360 degrees when the transmission shaft 103 of the gear box 108 drives the disconnecting switch and the grounding switch to be switched on and off.
In this embodiment, the opening and closing indicating device 101 further includes a device mounting box 107 for mounting the device mounting shaft 102, a connection structure for connecting with the gear box 108 is provided on the device mounting box 107, the connection structure includes a connection board, a bolt through hole is provided on the connection board, and the bolt passes through the bolt through hole to be fixed with the gear box. In addition, in order to facilitate observation of the states of the isolation indicator 104 and the ground indicator 105, an observation window is provided on the mounting case. The device mounting box 107 is fixedly connected with the gear box 108 by bolts. In addition, in order to improve the protection capability of the device mounting case 107, the device mounting case 107 is a waterproof seal case.
Example 2 of GIS in the present utility model:
the present embodiment is different from embodiment 1 in that in embodiment 1, the connection structure includes a connection plate. In this embodiment, the connection structure includes a buckle, and the device mounting case is fixedly connected with the gear case through the buckle.
Example 3 of GIS in the present utility model:
this embodiment differs from embodiment 1 in that in embodiment 1, a viewing window is provided in the device mounting case. In this embodiment, the device mounting box is not provided with a viewing window.
Example 4 of GIS in the present utility model:
the present embodiment is different from embodiment 1 in that in embodiment 1, the on/off indicating device includes a device mounting box. In this embodiment, the switching on/off indicating device does not include a device mounting case.
Example 5 of GIS in the present utility model:
this embodiment differs from embodiment 1 in that in embodiment 1, the device mounting shaft is arranged in parallel with the transmission shaft. In this embodiment, the device mounting shaft is disposed perpendicularly to the drive shaft.
Example 6 of GIS in the present utility model:
this embodiment differs from embodiment 1 in that in embodiment 1, the device mounting shaft is connected to the transmission shaft by a gear transmission. In this embodiment, the device mounting shaft is in driving connection with the driving shaft through a driving chain.
Example 7 of GIS in the present utility model:
the present embodiment is different from embodiment 1 in that in embodiment 1, the isolation indicator and the ground indicator are each formed of a cam. Whereas in this embodiment one of the isolation indicator and the ground indicator is formed by a cam. Alternatively, the isolation indicator and the ground indicator are formed from strips.
Example 8 of GIS in the present utility model:
this embodiment is different from embodiment 1 in that in embodiment 1, the isolation indicator and the ground indicator are arranged at intervals in the axial direction of the device mounting shaft. In this embodiment, the isolation indicator and the ground indicator are on the same plane in the axial direction of the device mounting shaft.
Example 9 of GIS in the present utility model:
this embodiment differs from embodiment 1 in that in embodiment 1, the gear ratio between the device mounting shaft and the transmission shaft is 4. In this embodiment, the transmission ratio between the device mounting shaft and the transmission shaft is 3.8. Alternatively, the gear ratio between the device mounting shaft and the drive shaft is 4.2. Of course, the transmission ratio between the device mounting shaft and the transmission shaft may also be 2.13.
In the embodiment of the opening and closing indicating device for the three-phase box-separating type isolating grounding switch, the opening and closing indicating device comprises a box-separating type isolating grounding switch, a box-separating type isolating grounding switch and a switch body, wherein the box-separating type isolating grounding switch is arranged on the box-separating type isolating grounding switch:
the opening and closing indicating device for the three-phase box-separating type isolation grounding switch provided in this embodiment has the same structure as that of the opening and closing indicating device in any embodiment of the GIS, and is not described herein again.
The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a three-phase divides box isolation earthing switch to use divide-shut brake indicating device, its characterized in that, including the device installation axle, the device installation axle is connected with the transmission shaft transmission of gear box when using, has set firmly isolation indicator and ground connection indicator on the device installation axle, isolation indicator has isolation closing position and isolation separating brake position on its swing stroke, ground connection indicator has ground connection closing position and ground connection separating brake position on its swing stroke, the divide-shut brake indicating device still include the travel switch of corresponding arrangement in isolation closing position, isolation separating brake position, ground connection closing position and ground connection separating brake position department, the transmission ratio between device installation axle and the transmission shaft is not less than 2.13.
2. The opening/closing indicating device for a three-phase split-box type isolation grounding switch according to claim 1, wherein the isolation indicator and the grounding indicator are arranged at intervals in an axial direction of a device mounting shaft.
3. The opening/closing indicating device for a three-phase split-box type isolation grounding switch according to claim 1, wherein at least one of the isolation indicator and the grounding indicator is formed of a cam.
4. The opening/closing indicating device for three-phase split-box type isolated grounding switch as claimed in claim 1, wherein the device mounting shaft is connected with the transmission shaft through a gear transmission.
5. The opening/closing indicating device for a three-phase split-box type isolation grounding switch according to claim 4, wherein the device mounting shaft is arranged in parallel with the transmission shaft.
6. The opening/closing indicating device for three-phase split-box type isolated grounding switch as claimed in any one of claims 1 to 5, wherein said opening/closing indicating device further comprises a device mounting box for mounting a device mounting shaft, and a connection structure for connecting with the gear box is provided on the device mounting box.
7. The opening/closing indicating device for three-phase split-box type isolating and grounding switch as claimed in claim 6, wherein an observation window for observing the states of the isolating indicator and the grounding indicator is provided on the device mounting box.
8. The opening and closing indicating device for the three-phase split-box type isolation grounding switch according to claim 6, wherein the connecting structure comprises a connecting plate, bolt through holes are formed in the connecting plate, and the bolts penetrate through the bolt through holes and are fixed with the gear box.
9. A GIS, comprising a three-phase box-type isolating and grounding switch, and a switch-on/switch-off indicating device arranged on the three-phase box-type isolating and grounding switch, characterized in that the switch-on/switch-off indicating device adopts the switch-on/switch-off indicating device for the three-phase box-type isolating and grounding switch according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467339.7U CN220121698U (en) | 2023-03-13 | 2023-03-13 | Switching-on/off indicating device and GIS for three-phase box-separating type isolation grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467339.7U CN220121698U (en) | 2023-03-13 | 2023-03-13 | Switching-on/off indicating device and GIS for three-phase box-separating type isolation grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121698U true CN220121698U (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320467339.7U Active CN220121698U (en) | 2023-03-13 | 2023-03-13 | Switching-on/off indicating device and GIS for three-phase box-separating type isolation grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121698U (en) |
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2023
- 2023-03-13 CN CN202320467339.7U patent/CN220121698U/en active Active
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